CN109599642A - The temperature control method and humidity control system of on-vehicle battery - Google Patents

The temperature control method and humidity control system of on-vehicle battery Download PDF

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Publication number
CN109599642A
CN109599642A CN201710923056.8A CN201710923056A CN109599642A CN 109599642 A CN109599642 A CN 109599642A CN 201710923056 A CN201710923056 A CN 201710923056A CN 109599642 A CN109599642 A CN 109599642A
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China
Prior art keywords
battery
temperature
power
regulatory demand
cooling
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CN201710923056.8A
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CN109599642B (en
Inventor
伍星驰
谈际刚
王洪军
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BYD Co Ltd
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BYD Co Ltd
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Priority to CN201710923056.8A priority Critical patent/CN109599642B/en
Priority to TW107123972A priority patent/TWI682568B/en
Priority to PCT/CN2018/108835 priority patent/WO2019062988A1/en
Publication of CN109599642A publication Critical patent/CN109599642A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a kind of temperature control method of on-vehicle battery and humidity control system, the on-vehicle battery includes the battery of multiple parallel connections, be the described method comprises the following steps: obtaining the temperature regulatory demand power of the battery of multiple parallel connections respectively；The temperature for obtaining the battery of multiple parallel connections respectively adjusts actual power；Actual power is adjusted according to the temperature regulatory demand power of the battery of multiple parallel connections and temperature respectively the temperature of the battery of multiple parallel connections is adjusted.The present invention can accurately control the heating power and cooling power of each battery according to the virtual condition of each battery, temperature is adjusted when battery temperature is excessively high or when too low, so that the temperature of battery is maintained preset range, avoid there is a situation where due to temperature influence on-vehicle battery performance.

Description

The temperature control method and humidity control system of on-vehicle battery
Technical field
The present invention relates to automobile technical field, in particular to the temperature control method and a kind of vehicle mounted electric of a kind of on-vehicle battery The humidity control system in pond.
Background technique
Currently, the performance climate environment of the on-vehicle battery of electric car is affected, environment temperature is excessively high or too low Will influence on-vehicle battery performance, it is therefore desirable to the temperature of on-vehicle battery is adjusted so that its temperature maintain it is default In range.
In the related technology, it for the area of climatic environment sweltering heat, needs to increase battery cooling system in electric car, with Its temperature is reduced when the temperature is excessively high in on-vehicle battery；For the area of climatic environment cold, need to increase electricity in electric car Pond heating system, to increase its temperature when on-vehicle battery temperature is too low.
However, hot, winter and cold area for summer, the above method, which cannot be considered in terms of, solves on-vehicle battery temperature mistake The high and too low problem of temperature, and it is more coarse to the adjusting method of on-vehicle battery temperature, it can not be according to the reality of each battery State accurately controls the heating power and cooling power of each battery.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, this method can root an object of the present invention is to provide a kind of temperature control method of on-vehicle battery The heating power and cooling power that each battery is accurately controlled according to the virtual condition of each battery, when battery temperature is excessively high or Temperature is adjusted when person is too low, the temperature of battery is made to maintain preset range, avoids occurring to influence vehicle mounted electric due to temperature The case where pond performance.
It is another object of the present invention to the humidity control systems for proposing a kind of on-vehicle battery.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of temperature control method of on-vehicle battery, institute The battery and battery temperature adjustment module that on-vehicle battery includes multiple parallel connections are stated, the described method comprises the following steps: obtaining respectively The temperature regulatory demand power of the battery of the multiple parallel connection；The temperature for obtaining the battery of the multiple parallel connection respectively adjusts reality Power；Actual power is adjusted to the battery according to the temperature regulatory demand power of the battery of the multiple parallel connection and temperature respectively Temperature adjustment module is controlled to be adjusted with the temperature of the battery to the multiple parallel connection, wherein each battery Temperature is individually controlled by the battery temperature adjustment module.
The temperature control method of on-vehicle battery according to an embodiment of the present invention, firstly, obtaining the battery of multiple parallel connections respectively Temperature regulatory demand power, then, obtain respectively the battery of multiple parallel connections temperature adjust actual power, finally, respectively root Actual power is adjusted according to the temperature regulatory demand power and temperature of the battery of multiple parallel connections to control battery temperature adjustment module System is adjusted with the temperature of the battery to multiple parallel connections.This method can be accurate according to the virtual condition of each battery as a result, The heating power and cooling power for controlling each battery, are adjusted temperature when battery temperature is excessively high or when too low, So that the temperature of battery is maintained preset range, avoid there is a situation where due to temperature influence on-vehicle battery performance.
In addition, the temperature control method of the on-vehicle battery proposed according to that above embodiment of the present invention can also have it is following attached Add technical characteristic:
According to one embodiment of present invention, actual power is adjusted according to the temperature regulatory demand power and the temperature The battery temperature adjustment module is controlled so that the temperature of the battery to be adjusted within the object time, to reach mesh Mark temperature.
According to one embodiment of present invention, described that need are adjusted according to the temperature of the battery of the multiple parallel connection respectively It asks power and the temperature to adjust actual power to control with the temperature to the battery battery temperature adjustment module It is adjusted further include: total moisture content regulatory demand function is generated according to the temperature regulatory demand power of the battery of the multiple parallel connection Rate；Judge whether the total moisture content regulatory demand power matches with the specified refrigeration work consumption of on-board air conditioner；If it does, then according to The temperature regulatory demand power of the battery of the multiple parallel connection is that the battery of the multiple parallel connection is cooled down；If mismatched, It is then the multiple according to the temperature regulatory demand power of the specified refrigeration work consumption of the air-conditioning and the battery of the multiple parallel connection Battery in parallel is cooled down.
According to one embodiment of present invention, the temperature regulatory demand power tool of the battery for obtaining multiple parallel connections respectively The first parameter when body includes: the opening temperature adjusting for obtaining each battery respectively, and generated each according to first parameter First temperature regulatory demand power of battery；Obtain respectively each battery temperature adjust when the second parameter, and according to Second parameter generates the second temperature regulatory demand power of each battery；It is adjusted according to the first temperature of each battery The temperature that the second temperature regulatory demand power of demand power and each battery generates each battery respectively is adjusted and is needed Seek power.
According to one embodiment of present invention, first parameter is the initial temperature when battery opening temperature is adjusted Reach the object time of the target temperature with target temperature and from the initial temperature, it is described raw according to first parameter It specifically includes: is obtained between the initial temperature and the target temperature at the first temperature regulatory demand power of each battery First temperature difference；The first temperature regulatory demand power is generated according to first temperature difference and the object time.
According to one embodiment of present invention, the first temperature regulatory demand power: Δ T is generated by following formula1* C*M/t, wherein Δ T1The first temperature difference between the initial temperature and the target temperature, t are the object time, C For the specific heat capacity of the battery, M is the quality of the battery.
According to one embodiment of present invention, second parameter is the average electricity of each battery within a preset time Stream, the second temperature regulatory demand power of each battery: I is generated by following formula2* R, wherein I is the average electricity Stream, R are the internal resistance of the battery.
According to one embodiment of present invention, above-mentioned method further include: the temperature of the battery of the multiple parallel connection of detection； When the temperature for having at least one battery in the battery of the multiple parallel connection is greater than the first temperature threshold, into refrigerating mode；When When thering is the temperature of at least one battery to be less than second temperature threshold value in the battery of the multiple parallel connection, into heating mode.
According to one embodiment of present invention, described respectively according to the battery of the multiple parallel connection when for refrigerating mode Temperature regulatory demand power and temperature adjust actual power and the temperature of the battery of the multiple parallel connection be adjusted, specific packet It includes: judging whether the temperature regulatory demand power of each battery is greater than the corresponding temperature of each battery and adjusts practical function Rate；If the temperature regulatory demand power of some battery is greater than the battery, corresponding temperature adjusts actual power, and obtaining should The temperature regulatory demand power of battery and the temperature adjust the difference power between actual power, and according to the difference power Increase the power for cooling down the compressor of the battery, or adjust the coolant rate for increasing the battery, to increase State the cooling power of battery；If the temperature regulatory demand power of some battery is less than or equal to the corresponding temperature of the battery Degree adjusts actual power, then reduces the power of the compressor or keep the power of the compressor constant, or adjust and reduce The coolant rate of the battery, to reduce the cooling power of the battery.
According to one embodiment of present invention, described respectively according to the battery of the multiple parallel connection when for heating mode Temperature regulatory demand power and temperature adjust actual power and the temperature of the battery of the multiple parallel connection be adjusted, specific packet It includes: judging whether the temperature regulatory demand power of each battery is greater than the corresponding temperature of each battery and adjusts practical function Rate；If the temperature regulatory demand power of some battery is greater than the battery, corresponding temperature adjusts actual power, and obtaining should The temperature regulatory demand power of battery and the temperature adjust the difference power between actual power, and according to the difference power Increase the power for cooling down the heating of the battery, or adjust the coolant rate for increasing the battery, described in increasing The heating power of battery；If the temperature regulatory demand power of some battery is less than or equal to the corresponding temperature of the battery Actual power is adjusted, then reduces the power of the heater, or keep the power of the heater constant, or adjust and reduce institute The coolant rate of battery is stated, to reduce the heating power of the battery.
According to one embodiment of present invention, above-mentioned method further include: if the temperature of some battery, which is adjusted, to be needed It asks power to be less than the corresponding temperature and adjusts actual power, then reduce the revolving speed of water pump；If the temperature of some battery Regulatory demand power is greater than the corresponding temperature and adjusts actual power, then improves the revolving speed of the water pump.
According to one embodiment of present invention, the temperature of the battery for obtaining the multiple parallel connection respectively adjusts practical function Rate specifically includes: obtaining for adjusting the inlet temperature and outlet temperature of the flow path of each battery temperature, and obtains cooling Liquid stream enters the flow velocity of the flow path；The of each battery is generated according to the path inlet temperature of each battery and outlet temperature Two temperature differences；It is adjusted according to the temperature that the second temperature difference of each battery and the flow velocity generate each battery practical Power.
According to one embodiment of present invention, the temperature is generated by following formula and adjusts actual power: Δ T2* c*m, Wherein, the Δ T2Poor for the second temperature, c is the specific heat capacity of coolant liquid in the battery cooling circuit, and m is the unit time Inside flow through the coolant liquid quality of the cross-sectional area of the flow path, wherein m=v* ρ * s, v are the flow velocity of the coolant liquid, and ρ is institute The density of coolant liquid is stated, s is the cross-sectional area of the flow path.
According to one embodiment of present invention, the compressor for providing refrigerant for the battery is multiple, the side Method further include: judge to start according to the specified refrigeration work consumption of the temperature regulatory demand power of each battery and each compressor Compressor quantity；When for refrigerating mode, the compressor start of respective numbers is controlled.
According to one embodiment of present invention, the temperature regulatory demand power according to each battery and each pressure The quantity of the compressor of the specified refrigeration work consumption judgement starting of contracting machine specifically includes: adjusting need according to the temperature of each battery Power is asked to generate total moisture content regulatory demand power；Judge whether the total moisture content regulatory demand power is greater than the volume of single compressor Determine refrigeration work consumption；If it is greater than the specified refrigeration work consumption of the single compressor, then controls the multiple compressor while starting.
In order to achieve the above objectives, another aspect of the present invention embodiment proposes a kind of humidity control system of on-vehicle battery, It include: compressor；The condenser being connected with the compressor；The battery being connected between the compressor and the condenser is cold But circuit；The battery temperature adjustment module being connected with the battery of multiple parallel connections and the battery cooling circuit, it is described for obtaining The temperature regulatory demand power and temperature of the battery of multiple parallel connections adjust actual power, and respectively according to the electricity of the multiple parallel connection The temperature regulatory demand power and temperature in pond adjust actual power and the temperature of the battery of the multiple parallel connection are adjusted wherein, The temperature of each battery is individually controlled by the battery temperature adjustment module.
The humidity control system of on-vehicle battery according to an embodiment of the present invention is obtained more by battery temperature adjustment module The temperature regulatory demand power and temperature of the battery of a parallel connection adjust actual power, and respectively according to the temperature of the battery of multiple parallel connections Degree regulatory demand power and temperature adjust actual power and the temperature of the battery of multiple parallel connections are adjusted.The system can as a result, It is excessively high in battery temperature accurately to control the heating power and cooling power of each battery according to the virtual condition of each battery When or it is too low when temperature is adjusted, so that the temperature of battery is maintained preset range, avoid occur due to temperature influence vehicle The case where carrying battery performance.
In addition, the humidity control system of the on-vehicle battery proposed according to that above embodiment of the present invention can also have it is following attached Add technical characteristic:
According to one embodiment of present invention, described respectively according to the temperature regulatory demand function of the battery of the multiple parallel connection Rate and temperature adjust actual power and the temperature of the battery of the multiple parallel connection are adjusted, and specifically include: respectively according to The temperature regulatory demand power and temperature of the battery of multiple parallel connections adjust actual power within the object time to the multiple parallel connection The temperature of battery be adjusted, to reach target temperature.
According to one embodiment of present invention, the battery cooling circuit includes heat exchanger, the heat exchanger and the electricity Pond temperature adjustment module is connected.
According to one embodiment of present invention, the battery temperature adjustment module includes: the stream for adjusting the battery temperature Road, the flow path are separately positioned among the battery；It is connected to the water pump between the flow path and the heat exchanger, medium holds Device, heater and controller, wherein the controller obtains the temperature regulatory demand of the battery of the multiple parallel connection respectively Power and temperature adjust actual power, and adjust reality according to the temperature regulatory demand power of each battery and temperature respectively The temperature of each battery is adjusted in power.
According to one embodiment of present invention, the battery temperature adjustment module further includes being separately positioned on the flow path First temperature sensor of entrance is separately positioned on the second temperature sensor and flow sensor of the outlet of the flow path.
According to one embodiment of present invention, the controller is also used to the temperature tune of the battery according to the multiple parallel connection Save demand power generate total moisture content regulatory demand power, and judge the total moisture content regulatory demand power whether with on-board air conditioner Specified refrigeration work consumption matching, wherein if it does, then the controller adjusts need according to the temperature of the battery of the multiple parallel connection Seeking power is that the battery of the multiple parallel connection is cooled down；If it does not match, the controller is according to the specified of the air-conditioning The temperature regulatory demand power of refrigeration work consumption and the battery of the multiple parallel connection is that the battery of the multiple parallel connection is cooled down.
According to one embodiment of present invention, the controller, when being adjusted for obtaining each battery opening temperature respectively The first parameter, and generate according to first parameter the first temperature regulatory demand power of each battery, and obtain respectively Second parameter of each battery when temperature is adjusted, and need are adjusted according to the second temperature that second parameter generates each battery Power is sought, and need are adjusted according to the second temperature of the first temperature regulatory demand power of each battery and each battery Power is asked to generate the temperature regulatory demand power of each battery.
According to one embodiment of present invention, first parameter is the initial temperature when battery opening temperature is adjusted Reach the object time of the target temperature with target temperature and from the initial temperature, the controller obtains described initial The first temperature difference between temperature and the target temperature, and first is generated according to first temperature difference and the object time Temperature regulatory demand power.
According to one embodiment of present invention, the controller generates the first temperature regulatory demand by following formula Power: Δ T1* C*M/t, wherein Δ T1For the first temperature difference between each battery initial temperature and the target temperature, T is the object time, and C is the specific heat capacity of the battery, and M is the quality of the battery
According to one embodiment of present invention, second parameter is the average electricity of each battery within a preset time Stream, the controller generate the second temperature regulatory demand power of each battery: I by following formula2* R, wherein I is The average current, R are the internal resistance of the battery.
According to one embodiment of present invention, the controller is also used to detect the temperature of the battery of the multiple parallel connection, And when thering is the temperature of at least one battery to be greater than the first temperature threshold in the battery of the multiple parallel connection, the temperature tune is controlled Section system enters refrigerating mode, and has the temperature of at least one battery to be less than second temperature threshold in the multiple batteries in parallel connection When value, controls the humidity control system and enter heating mode.
According to one embodiment of present invention, when for refrigerating mode, the controller is adjusted in the temperature of some battery Demand power is greater than the corresponding temperature of the battery and adjusts practical function, then obtain the temperature regulatory demand power of the battery with The temperature adjusts the difference power between actual power, and increases the compressor for cooling down the battery according to the difference power Power, or increase the coolant rate of the battery, to increase the cooling power of the battery, and in some battery When the temperature regulatory demand power is less than or equal to temperature adjusting actual power, reduce power or the guarantor of the compressor The power for holding the compressor is constant, or adjusts the coolant rate for reducing the battery, to reduce the cooling of the battery Power.
According to one embodiment of present invention, when for heating mode, the temperature of the controller in some battery When regulatory demand power is greater than the temperature and adjusts actual power, the temperature regulatory demand power of the battery and described is obtained Temperature adjusts the temperature difference between actual power, and increases the function for heating the heater of the battery according to the temperature difference Rate, or the coolant rate for increasing the battery is adjusted, to increase the heating power of the battery, and in some battery When the temperature regulatory demand power is less than or equal to temperature adjusting actual power, reduce the power of the heater, or It keeps the power of the heater constant, or adjusts the coolant rate for reducing the battery, to reduce adding for the battery Thermal power.
According to one embodiment of present invention, the controller is also used to adjust in the temperature of some battery When demand power is less than the corresponding temperature adjusting actual power, the revolving speed of water pump is reduced, and in the temperature of some battery When spending regulatory demand power greater than the corresponding temperature adjusting actual power, the revolving speed of the water pump is improved.
According to one embodiment of present invention, the entrance that the controller is detected according to first temperature sensor respectively The second temperature that the outlet temperature of temperature and second temperature sensor generates each battery is poor, and according to the of each battery The temperature that two temperature differences and the flow velocity of flow sensor detection generate each battery adjusts actual power.
According to one embodiment of present invention, the temperature is generated by following formula and adjusts actual power: Δ T2* c*m, Wherein, the Δ T2Poor for the second temperature, c is the specific heat capacity of the coolant liquid in the battery cooling circuit, when m is unit The coolant liquid quality of the interior cross-sectional area for flowing through the flow path, wherein m=v* ρ * s, v are the flow velocity of the coolant liquid, and ρ is The density of the coolant liquid, s are the cross-sectional area of the flow path.
According to one embodiment of present invention, the compressor for providing refrigerant for the battery is multiple, the vehicle Interior cooling circuit and the battery cooling circuit be it is multiple, the controller is also used to the temperature tune according to each battery The quantity of the compressor of the maximum refrigeration work consumption judgement starting of demand power and each compressor is saved, and is adjusted in the temperature and is When system is refrigerating mode, the compressor start of respective numbers is controlled.
According to one embodiment of present invention, the controller is according to the temperature regulatory demand function of each battery Rate generates total moisture content regulatory demand power, and the controller is judging the total moisture content regulatory demand power greater than single compressor Specified refrigeration work consumption when, control the multiple compressor while starting.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments Obviously and it is readily appreciated that, wherein
Figure 1A-Figure 1B is showing for the humidity control system flow passage structure of the on-vehicle battery of one embodiment according to the present invention It is intended to；
Fig. 2 is the schematic diagram of the humidity control system flow passage structure of the on-vehicle battery of second embodiment according to the present invention；
Fig. 3 is the schematic diagram of the humidity control system flow passage structure of the on-vehicle battery of third embodiment according to the present invention；
Fig. 3 A is the operation principle schematic diagram of controller according to an embodiment of the invention；
Fig. 4 is the flow chart of the temperature control method of the on-vehicle battery of one embodiment according to the present invention；
Fig. 5 is the flow chart of the temperature control method of the on-vehicle battery of second embodiment according to the present invention；
Fig. 6 is the flow chart of the temperature control method of the on-vehicle battery of third embodiment according to the present invention；
Fig. 7 is the flow chart of the temperature control method of the on-vehicle battery of the 4th embodiment according to the present invention；
Fig. 8 is the flow chart of the temperature control method of the on-vehicle battery of the 5th embodiment according to the present invention；
Fig. 9 is the schematic diagram of the humidity control system flow passage structure of the on-vehicle battery of the 4th embodiment according to the present invention；
Figure 10 is the flow chart of the temperature control method of the on-vehicle battery of the 6th embodiment according to the present invention；
Figure 11 A-11C is that the humidity control system flow passage structure of the on-vehicle battery of the 7th embodiment shows according to the present invention It is intended to；
Figure 12 a- Figure 12 b is the flow chart of the temperature control method of the on-vehicle battery of the 6th embodiment according to the present invention；
Figure 13 is the flow chart of the temperature control method of the on-vehicle battery of the 7th embodiment according to the present invention；
Figure 14 A-14B is the flow chart of the temperature control method of the vehicle of the 8th embodiment according to the present invention；
Figure 15 is the flow chart of the temperature control method of the vehicle of one embodiment according to the present invention；
Figure 16 is the flow chart of the temperature control method of the vehicle of second embodiment according to the present invention；
Figure 17 is the flow chart of the temperature control method of the vehicle of third embodiment according to the present invention；
Figure 18 is the flow chart of the temperature control method of the vehicle of the 4th embodiment according to the present invention；
Figure 19 A-19B is that the humidity control system flow passage structure of the on-vehicle battery of the 8th embodiment shows according to the present invention It is intended to；
Figure 20 is the schematic diagram of the humidity control system flow passage structure of the on-vehicle battery of the 9th embodiment according to the present invention；
Figure 21 is air outlet distributing position schematic diagram according to an embodiment of the invention；
Figure 22 is the flow chart of the temperature control method of the on-vehicle battery of the 8th embodiment according to the present invention；
Figure 23 is the flow chart of the temperature control method of the on-vehicle battery of the 9th embodiment according to the present invention；
Figure 24 is the schematic diagram of the humidity control system flow passage structure of the on-vehicle battery of the tenth embodiment according to the present invention；
Figure 25 is the flow chart of the temperature control method of the on-vehicle battery of the tenth embodiment according to the present invention；
Figure 26 is the signal of the humidity control system flow passage structure of the on-vehicle battery of the tenth one embodiment according to the present invention Figure；
Figure 26 A-26B is the signal of the humidity control system flow passage structure of the on-vehicle battery of the 12nd embodiment according to the present invention Figure；
Figure 27 is the flow chart of the temperature control method of the on-vehicle battery of the tenth one embodiment according to the present invention；
Figure 28 is the schematic diagram of the humidity control system structure of the on-vehicle battery of the 13rd embodiment according to the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
When the quantity of the battery of vehicle is 1, as shown in FIG. 1A and 1B, the humidity control system packet of on-vehicle battery It includes: the cooling branch 4 of compressor 1, condenser 2, battery and battery temperature adjustment module 5.
Wherein, condenser 2 is connected with compressor 1, and the cooling branch 4 of battery is connected between compressor 1 and condenser 2.Electricity The cooling branch 4 of pond temperature adjustment module 5 and battery is connected, for obtaining the temperature regulatory demand power P 1 and battery of battery 6 Temperature adjusts actual power P2, and adjusts actual power P2 to the temperature of battery 6 according to temperature regulatory demand power P 1 and temperature It is adjusted.Compressor 1 and condenser 2 constitute refrigeration branch.
Specifically, when the temperature of battery is adjusted to target temperature by temperature regulatory demand power P 1, the temperature of battery needs Spend regulation power.It is the battery practical temperature obtained when currently carrying out temperature adjusting to battery that battery temperature, which adjusts actual power P2, Spend regulation power.Target temperature is setting value, can be preset according to the actual conditions of on-vehicle battery, for example, when being winter When, outdoor environment temperature is very low, need to heat to battery, and target temperature can be set at 10 DEG C or so, when for summer, needs Battery is cooled down, target temperature can be set at 35 DEG C or so.The temperature tune of the acquisition battery 6 of battery temperature adjustment module 5 The temperature for saving demand power P1 and battery 6 adjusts actual power P2, and is adjusted in fact according to temperature regulatory demand power P 1 and temperature Border power P 2 adjusts compressor 1 and the power of heater is adjusted with the temperature to battery 6.As shown in Figure 1A, when air-conditioning When coolant liquid is not linked into battery temperature adjustment module 5, there are two pipeline, first pipe and compressions for tool in the cooling branch 4 of battery Machine 1 is connected, and second pipe is connected with battery temperature adjustment module 5, wherein first pipe is mutually independent with second pipe Setting is closed on, so that medium (media such as the flow medias such as refrigerant, water, oil, air or phase-change material or other chemicals) Independently of each other.Battery 6 when the temperature is excessively high, on-board air conditioner refrigerating function open, battery refrigerating function starting, first pipe with The flow direction of coolant liquid (such as refrigerant) is respectively as follows: the cooling 4-pressure of branch of compressor 1-condenser, 2-battery in second pipe Contracting machine 1；The cooling branch of cooling 4-battery temperature of branch adjustment module, 5-battery, 6-battery temperature, the 5-battery of adjustment module of battery Road 4.
As shown in Figure 1B, when the coolant liquid of air-conditioning is linked into battery temperature adjustment module 5, then the flow direction of coolant liquid Are as follows: cooling 4-battery temperature of branch adjustment module, 5-battery, the 6-battery temperature of compressor 1-condenser, 2-battery adjusts mould 5-compressor of block 1.
In the above two embodiments, on-board air conditioner is only used for that battery 6 is cooled down and heated, humidity control system Compartment and battery 6 can be cooled down by on-board air conditioner.When the system by on-board air conditioner to compartment and battery 6 into When row is cooling, as shown in Fig. 2, humidity control system can also include interior cooling branch 3, the cooling branch 3 of car is connected to pressure Between contracting machine 1 and condenser 2.
When vehicle interior temperature is excessively high, interior refrigerating function starting, the flow direction of coolant liquid are as follows: 1-condenser of compressor 2-interior cooling 3-compressors of branch 1.When battery 6 when the temperature is excessively high, battery refrigerating function starting, first pipe and second The flow direction of coolant liquid in pipeline are as follows: the cooling 4-compressor of branch 1 of compressor 1-condenser, 2-battery；The cooling branch of battery Road 4-battery temperature adjustment module 5-battery, 6-battery temperature, 5-battery of adjustment module cools down branch 4.Thus, it is possible to according to The virtual condition of battery accurately controls the heating power and cooling power of on-vehicle battery, thus on-vehicle battery when the temperature is excessively high or Temperature is adjusted when person is too low, the temperature of on-vehicle battery is made to maintain preset range, avoids occurring to influence vehicle due to temperature The case where carrying battery performance, also, vehicle interior temperature meet demand can also be made in the case where the temperature of battery is met the requirements.
Further, according to one embodiment of present invention, as shown in figure 3, the cooling branch 4 of battery may include heat exchanger 41, heat exchanger 41 includes first pipe and second pipe, and second pipe is connected with battery temperature adjustment module 5, first pipe and Compressor 1 is connected, wherein first pipe with second pipe is mutually independent closes on setting.In an embodiment of the present invention, it changes Hot 41 physical location of device can be located at the circuit where vehicle-mounted air conditioner compressor 1, convenient for on-board air conditioner factory debugging, and make vehicle Carrying air-conditioning individually can supply and assemble, meanwhile, on-board air conditioner only needs to fill a medium during the installation process.Heat exchanger 41 Physical location can also be located at the circuit where battery 6, the physical location of heat exchanger 41 can also be independently of on-board air conditioner pressure The circuit setting where circuit and battery 6 where contracting machine 1.
As shown in figure 3, the flow path that battery temperature adjustment module 5 may include: regulating cell temperature (does not show specifically in figure Out), flow path is arranged among battery 6.Pump 51, media Containers 52, the heater 53 being connected between flow path and heat exchanger 41, with And controller (not specifically illustrated in figure).Wherein, controller obtains the temperature regulatory demand power P 1 of battery 6 and the temperature of battery Actual power P2 is adjusted, and actual power P2 is adjusted to the temperature of battery 6 according to the temperature regulatory demand power P 1 and temperature of battery Degree is adjusted.The cooling branch 3 of car may include: evaporator 31, the first expansion valve 32 and the first electronic valve 33.Battery is cooling Branch 4 can also include the second expansion valve 42 and the second electronic valve 43.
It is understood that the cooling branch 4 of battery can also be not provided with heat exchanger 41, when not having heat exchanger 41, battery What is flowed in cooling branch 4 is exactly refrigerant.If heat exchanger 41 is arranged, what is flowed in the first pipe of the cooling branch 4 of battery is Refrigerant, what is flowed in second pipe is coolant liquid, and what is flowed in the cooling branch 3 of car is refrigerant.
An embodiment according to the present invention, as shown in figure 3, battery temperature adjustment module 5 further includes being arranged in flow path Entrance the first temperature sensor 55, the second temperature sensor 56 and flow sensor 57 of the outlet of flow path are set. It is appreciated that the entrance and exit position of flow path is not absolute, determining according to the steering of pump 51.
Specifically, as shown in Figure 3A, controller may include battery management controller, it is battery thermal management controller, vehicle-mounted Air-conditioner controller.Wherein, battery thermal management controller can be with the first temperature sensor 51, second temperature sensor 52 and flow velocity Sensor 57 is electrically connected, and carries out CAN communication with pump 51 and heater 53, and according to the specific heat capacity of medium, the density of medium, flow path Cross-sectional area, obtain temperature adjust actual power P2 simultaneously control pump 51 revolving speed and control heater 53 power.Battery Management Controller acquisition flow through battery electric current, battery itself temperature, and according to the target temperature of battery, object time t with And the internal resistance R of the specific heat capacity C of battery, the mass M of battery, battery, obtain temperature regulatory demand power P 1, and the vehicle-mounted sky of control Controller is adjusted to start or stop work.On-board air conditioner controller is electrically connected with expansion valve and electronic valve, and on-board air conditioner controller CAN communication can be carried out with battery management controller and battery thermal management controller and compressor 1, to control according to battery management The temperature that the temperature regulatory demand power P 1 and battery thermal management controller that device obtains obtain adjusts actual power P2 control pressure The folding of the power P, expansion valve and electronic valve of contracting machine achievees the purpose that control heat exchange amount.
Heat exchanger 41 can be plate heat exchanger, and plate heat exchanger may be mounted inside on-board air conditioner, so that entire system Refrigerant circuit convenient for on-board air conditioner factory debugging, and allows on-board air conditioner individually to supply and group inside on-board air conditioner Dress, meanwhile, on-board air conditioner only needs to fill primary coolant during the installation process.
Coolant liquid from the entrance of flow path flow into battery 6 inside, from the outlet of flow path flow out, thus realize battery 6 with it is cold But the heat exchange between liquid.
Pump 51 is mainly used for providing power, and media Containers 52 are mainly used for storing coolant liquid and receive to humidity control system The coolant liquid of addition, when the coolant liquid in humidity control system is reduced, the coolant liquid in media Containers 52 can be automatically replenished.Add Hot device 53 can (Positive Temperature Coefficient, positive temperature coefficient refer to positive temperature coefficient for PTC Very big semiconductor material or component) heater, can with controller carry out CAN (Controller Area Network, Controller local area network) communication, heating power is provided for the humidity control system of on-vehicle battery, is controlled by the controller, heater 53 can be set any position between media Containers 52 and the first temperature sensor 55.I.e. heater 53 is not direct with battery 6 Contact, safety with higher, dependable with function.
Temperature of first temperature sensor 55 to detect path inlet coolant liquid, second temperature sensor 56 is to detect The temperature of flowing path outlet coolant liquid.Flow sensor 57 is believed to detect the flow velocity of coolant liquid in pipeline in humidity control system Breath.First electronic valve 33 can be used to control interior cold to control opening and closing for interior cooling branch 3, the first expansion valve 32 But the coolant rate in branch 3.Second electronic valve 43 is to control opening and closing for the cooling branch 4 of battery, the second expansion Valve 42 can be used for controlling the coolant rate in the cooling branch 4 of battery.
It is appreciated that as shown in Figure 1B, when the coolant liquid of air-conditioning is linked into battery temperature adjustment module 5, then without setting Set heat exchanger 41, pump 51 and media Containers 52.The mode that such on-board air conditioner circuit is connected to the cooling branch 4 of battery, Ke Yiti High cooling efficiency avoids the incomplete problem that exchanges heat at heat exchanger 41, that is, has prevented the heat exchange efficiency bring because of heat exchanger Heat exchange loss.In the mutually independent mode of coolant liquid of on-board air conditioner circuit and the cooling branch of battery, in on-board air conditioner circuit The power of compressor is only compressor for cooling down the actual power of battery after considering the equal heat exchange efficiency of heat exchanger 41, and after The compressor horsepower P of continuous description is that compressor described herein is used to cool down the power of battery (it should be understood that subsequent descriptions Maximum (either specified) refrigeration work consumption of compressor is maximum (or specified) power of compressor multiplied by heat exchange efficiency).Wherein, The heat exchange efficiency can be a definite value of setting, measure after whole system is put up；It is also possible to obtain in real time, Can be by increasing temperature sensor before and after heat exchanger and the circuit increase flow sensor where heat exchanger, Ke Yizhi Know practical heat exchange power, it is heat exchange efficiency that the temperature of battery, which adjusts actual power P2 and the ratio of practical heat exchange power,.
The temperature regulatory demand function how battery temperature adjustment module 5 obtains battery 6 is described combined with specific embodiments below Rate P1 and temperature adjust actual power P2.
According to one embodiment of present invention, controller can be used for obtaining the first ginseng when battery opening temperature is adjusted Number, and the first temperature regulatory demand power of battery is generated according to the first parameter, and obtain the of battery when temperature is adjusted Two parameters, and adjusted according to the second temperature regulatory demand power of the second parameter generation battery, and according to the first temperature of battery The temperature regulatory demand power P 1 of the second temperature regulatory demand power of demand power and battery generation battery.
Further, according to one embodiment of present invention, the first parameter is initial temperature when 6 opening temperature of battery is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature, controller obtain initial temperature and target temperature The first temperature difference Δ T between degree1, and according to the first temperature difference Δ T1The first temperature regulatory demand function is generated with object time t Rate.
Further, controller generates the first temperature regulatory demand power by following formula (1):
ΔT1* (1) C*M/t,
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is battery 6 Specific heat capacity, M are the quality of battery 6.
Second parameter is the average current I of battery 6 within a preset time, and controller generates second by following formula (2) Temperature regulatory demand power:
I2* R, (2),
Wherein, I is average current, and R is the internal resistance of battery 6.
When being cooled down to battery 6, P1=Δ T1*C*M/t+I2*R；When being heated to battery 6, P1=Δ T1* C*M/t-I2*R。
According to one embodiment of present invention, controller respectively according to the first temperature sensor 55 detection inlet temperature and The outlet temperature that second temperature sensor 56 detects generates second temperature difference Δ T2, and according to the second temperature difference Δ of each battery T2Actual power P2 is adjusted with the flow velocity v that flow sensor 57 the detects temperature for generating battery.
Further, according to one embodiment of present invention, the practical function of temperature adjusting is generated according to by following formula (3) Rate P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v*s* ρ, s are the cross-sectional area of flow path, and v is the flow velocity of coolant liquid, and ρ is coolant liquid Density.
In addition, flow sensor can also be substituted by flow sensor, m=Q* ρ, when Q is the unit that flow sensor measures The interior coolant rate for flowing through flow passage cross-sectional area.
Specifically, after vehicle powers on, battery management controller judges whether vehicle needs to carry out temperature adjusting, if it is determined that Vehicle needs temperature to adjust, for example, the temperature of battery 6 is excessively high, is then sent by CAN communication to on-board air conditioner controller and opens temperature The information of regulatory function is spent, heat exchange information is sent after on-board air conditioner controller opening temperature regulatory function and gives battery thermal management control Device processed, while Vehicle Controller controls the second electronic valve 43 and opens, battery thermal management controller control pump 51 is to default revolving speed (such as The slow-speed of revolution) it starts to work.
Meanwhile battery management controller obtains the initial temperature (i.e. Current Temperatures) of battery 6, target temperature and from initial temperature Degree reaches the object time t of target temperature, and wherein target temperature and object time t can be preset according to the actual situation, and The first temperature regulatory demand power of battery is calculated according to formula (1).Battery management controller also obtains battery 6 when default Interior average current I, and according to the second temperature regulatory demand power of formula (2) calculating battery.Then, battery management controls Device is according to the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand power P 1 of battery 6 (temperature of battery 6 is adjusted to the demand power of target temperature within the object time), wherein cooled down when to battery 6 When, P1=Δ T1*C*M/t+I2* R, when being heated to battery 6, P1=Δ T1*C*M/t-I2*R。
Also, battery thermal management controller obtains the first temperature sensor 55 and second temperature sensor 56 detects temperature letter Breath, and the flow rate information of the detection of flow sensor 57 is obtained, actual power is adjusted according to the temperature that formula (3) calculates battery 6 P2。
Finally, on-board air conditioner controller adjusts actual power P2 and controls according to temperature regulatory demand power P 1, the temperature of battery 6 The aperture of the output power of compressor processed and the second expansion valve 42, selectively, battery thermal management controller adjust turning for pump 51 Speed.Such as, if temperature regulatory demand power P 1 is greater than temperature adjusting actual power P2, according to 1 He of temperature regulatory demand power P Temperature adjusts the difference of actual power P2, increases the power of compressor and increases the aperture of the second expansion valve 42, selectively increases Add the revolving speed of pump 51；If temperature regulatory demand power P 1 is less than temperature adjusting actual power P2, according to temperature regulatory demand Power P 1 and temperature adjust the difference of actual power P2, reduce the power of compressor and reduce the aperture of the second expansion valve 42, can Selectively reduce the revolving speed of pump 51.
For example, as can be seen from the above embodiments, temperature regulatory demand power P 1 consists of two parts, when battery 6 needs When cooling, 6 initial temperature of battery is 45 DEG C, and target temperature is 35 DEG C, then battery drops to 35 DEG C of heat for needing to distribute from 45 DEG C Amount be it is fixed, pass through formula (1) i.e. Δ T1* C*M/t is directly calculated and can be obtained, i.e. the first temperature regulatory demand power.Meanwhile In cooling procedure, there are electric discharge and charging process, this process can generate heat to battery 6, since the electric discharge of battery 6 is either filled Electric current is variation, and the heat of this part can also be directly obtained by detecting the average current I of battery, be passed through formula (3) That is I2* R directly calculates the heating power of present battery 6, i.e. second temperature regulatory demand power.Cooling completion of the invention Time is that (t can change according to user demand either vehicle actual design situation) is set based on object time t.In determination After object time t required for cooling completion, so that it may estimate out the temperature regulatory demand power of 6 cooling requirement of present battery P1, P1=Δ T1*C*M/t+I2*R.And start if it is heating function, then temperature regulatory demand power P 1=Δ T1*C*M/t- I2* R, i.e., battery 6 during heating, the electric discharge of battery 6 or charging current are bigger, required heating power, that is, temperature Regulatory demand power P 1 is smaller.
It how describes below in conjunction with specifically embodiment according to 1 He of temperature regulatory demand power P according to each battery 6 Temperature adjusts actual power P2 and the temperature of battery 6 is adjusted.
According to one embodiment of present invention, controller is also used to detect the temperature of battery, and is greater than in the temperature of battery When the first temperature threshold, control humidity control system enters refrigerating mode, and is less than second temperature threshold value in the temperature of battery When, control humidity control system enters heating mode.Wherein, the first temperature threshold and second temperature threshold value can be according to practical feelings Condition is preset, and the first temperature threshold is generally higher than second temperature threshold value, for example, the first temperature threshold can be 40 DEG C, second Temperature threshold can be 0 DEG C.
Specifically, after vehicle powers on, the temperature of battery management controller real-time detection battery 6, and judged.If electric The temperature in pond 6 is higher than 40 DEG C, illustrates that the temperature of battery 6 at this time is excessively high, to avoid high temperature from having an impact the performance of the battery 6, Need to carry out battery 6 cooling processing, control humidity control system enters refrigerating mode, concurrent power transmission pond refrigerating function starting letter It ceases and gives on-board air conditioner controller.On-board air conditioner controller controls the second electronic valve after receiving battery refrigerating function starting information 43 open, so that coolant liquid and battery 6 carry out heat exchange to reduce the temperature of battery 6.As shown in figure 3, working as humidity control system In refrigerating mode, the institute of battery 6 in the loop divide in corresponding first pipe and second pipe by the flow direction of coolant liquid for work Not are as follows: 1-condenser of compressor the 2-the second electronic valve 42-heat exchanger of the 43-the second expansion valve, 41-compressor 1；Media Containers 52-41-heaters of heat exchanger 53 (closing)-pump, 51-valve the 58-the first temperature sensor 55-battery, 6-second temperature 56-flow sensor of sensor, 57-media Containers 52 so recycle, and exchange heat at heat exchanger 41, realize the cooling of battery 6.
And if the temperature of battery 6 is lower than 0 DEG C, illustrate that the temperature of battery 6 at this time is too low, to avoid low temperature to battery 6 Performance has an impact, and needs to carry out battery 6 heating treatment, and battery management controller control humidity control system enters heated mould Formula, concurrent power transmission pond heating function start information to on-board air conditioner controller.On-board air conditioner controller is receiving battery heating Function starting information after control the second electronic valve 43 closing, while battery thermal management controller control heater 53 open, with for Humidity control system provides heating power.When humidity control system work in heating mode, the flow direction of coolant liquid are as follows: be situated between Matter 52-heat exchanger of container 41-heater 53 (unlatching)-pumps 51-the first temperature sensor 55-battery, 6-second temperature and passes 56-flow sensor of sensor, 57-media Containers 52；So circulation realizes the heating of battery 6.
According to one embodiment of present invention, when humidity control system works in refrigerating mode and in the temperature tune of battery 6 When section demand power P1 temperature corresponding greater than battery adjusts actual power P2, controller then obtains the temperature regulatory demand of battery Power P 1 and temperature adjust the difference power between actual power P2, and increase the compressor for cooling down battery 6 according to difference power Power, or increase the coolant rate of battery 6, to increase the cooling power of battery 6, and adjust in the temperature of battery 6 When demand power P1 is less than or equal to temperature adjusting actual power P2, reduces the power of compressor or keep the power of compressor not Become, or adjust the coolant rate for reducing battery, to reduce the cooling power of battery 6.
Specifically, when humidity control system work is in refrigerating mode, battery management controller obtains the temperature tune of battery Save demand power P1, battery thermal management controller obtain battery temperature adjust actual power P2, on-board air conditioner controller according to Temperature regulatory demand power P 1 and temperature adjust actual power P2 and are judged.If the temperature regulatory demand power P 1 of battery 6 Actual power P2 is adjusted greater than temperature, is illustrated if according to current refrigeration work consumption or coolant rate, it can not be in target The interior cooling for completing the battery 6, so, on-board air conditioner controller obtains the temperature regulatory demand power P 1 and temperature tune of battery The difference power between actual power P2 is saved, and increases the power of compressor 1 according to difference power, or increase the cooling liquid stream of battery Amount, that is, increase the aperture of the second expansion valve 42, to increase the cooling power of the battery, wherein temperature adjust actual power P1 with The difference power that temperature adjusts actual power P2 is bigger, and the power of compressor 1 and the coolant rate increase of the battery are more, so that The temperature of the battery is reduced to target temperature in preset time t.And if wherein the temperature adjusting actual power P1 of battery 6 is small Actual power P2 is adjusted in or equal to temperature, on-board air conditioner controller can keep the power of compressor 1 constant or appropriate reduction The power of compressor 1, or reduce the coolant rate of the battery, that is, reduce the aperture of the second expansion valve 42, to reduce battery Cooling power.When the temperature of battery 6 is lower than 35 DEG C, then battery 6 is cooling completes, and battery management controller passes through CAN communication The information of closing temperature regulatory function is sent to on-board air conditioner controller, on-board air conditioner controller controls the second electronic valve 43 and closes It closes.If after humidity control system enters the refrigerating mode long period, such as after 1 hour, still thering is the temperature of battery 6 to be higher than 35 DEG C, then on-board air conditioner controller suitably increases the power of compressor 1, so that the battery is completed to cool down as early as possible.
According to one embodiment of present invention, when humidity control system works in heating mode and adjusts in the temperature of battery When demand power P1 is greater than temperature adjusting actual power P2, controller obtains the temperature regulatory demand power P 1 and temperature of the battery The difference power between actual power P2 is adjusted, and the power for heating the heater 53 of battery is increased according to difference power, or The coolant rate for increasing battery is adjusted, to increase the heating power of battery, and the temperature regulatory demand power P 1 in battery When adjusting actual power P2 less than or equal to temperature, reduced power, or keep the power of heater 53 constant, or adjust and subtract The coolant rate of few battery, to reduce the heating power of battery.
Specifically, when humidity control system work is in heating mode, battery management controller obtains the P1 of battery, battery The temperature that thermal management controller obtains battery adjusts actual power P2.If the temperature regulatory demand power P 1 of battery 6 is greater than temperature Degree adjusts actual power P2, illustrates if according to current heating power or coolant rate, can not be complete within the object time At the heating of the battery 6, so, battery thermal management controller obtains the temperature regulatory demand power P 1 of the battery and temperature is adjusted Difference power between actual power P2, and the power for heating the heater 53 of battery 6 is increased according to difference power, or adjust Increase the coolant rate of battery, such as the revolving speed of pump 51 can be increased, so that the battery can complete temperature within the object time It adjusts.Wherein, temperature regulatory demand power P 1 and temperature adjust actual power P2 difference it is bigger, the power of heater 53 and The coolant rate of the cell circuit is increased more.And if the temperature regulatory demand power P 1 of battery is less than or equal to temperature Actual power P2 is adjusted, battery thermal management controller can suitably reduce the power of heater 53, or keep the function of heater 53 Rate is constant, or adjusts the coolant rate for reducing the cell circuit, to reduce the heating power of battery.When the temperature of battery 6 Higher than preset temperature, such as at 10 DEG C, the heating of battery 6 is completed, and battery management controller is communicated by CAN to battery thermal management Controller sends the information of closing temperature regulatory function, and battery thermal management controller controls heater 53 and closes.If temperature tune After section system enters the heating mode long period, such as after 1 hour, still there is the temperature of battery 6 lower than 10 DEG C, then battery thermal management Controller suitably increases the power of heater 53 again, so that battery 6 completes heating as early as possible.
According to one embodiment of present invention, controller be also used to be less than in the temperature regulatory demand power P 1 of battery or When adjusting actual power P2 equal to corresponding temperature, reduces the revolving speed of pump 51 or keep the revolving speed of pump 51 constant, and in battery Temperature regulatory demand power P 1 be greater than corresponding temperature adjust actual power P2 when, improve pump 51 revolving speed.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the temperature of battery 6, which is adjusted, to be needed It asks power P 1 to be less than temperature and adjusts actual power P2, the revolving speed of controller control pump 51 reduces, and to save electric energy, or keeps pump 51 revolving speed is constant.And if the temperature regulatory demand power P 1 of battery 6 is greater than temperature and adjusts actual power P2, controller is used for It is outer to control heater 53, the power increase of compressor 1 or the coolant rate increase in circuit where the battery, is also used to control pump 51 revolving speed improves, and can increase the coolant liquid quality that cooling flowing path cross section is flowed through in the unit time, to improve battery Temperature adjusts actual power P2, to realize that temperature is adjusted in object time t.And if the temperature regulatory demand power of battery 6 P1, which is equal to, adjusts actual power P2 in temperature, then to be maintained at current rotating speed constant for the revolving speed of control pump 51.
In summary, when humidity control system work is in refrigerating mode, if the temperature regulatory demand power P 1 of battery 6 With interior cooling requirement power P 4 and be less than compressor maximum refrigeration work consumption P, i.e. P1+P4≤P, then on-board air conditioner controller control Compressor 1 processed is run according to P1+P4 refrigeration work consumption.If P1+P4 > P, battery management controller judges that the temperature of battery 6 is It is no to be greater than set temperature (such as 45 DEG C), it is then preferably that battery 6 provides cooling power, on-board air conditioner controller if it is greater than 45 DEG C It controls compressor 1 to run according to maximum refrigeration work consumption, on-board air conditioner controller passes through to the first expansion valve 32 and the second expansion valve 42 aperture is controlled, and the cooling power of the cooling branch 4 of battery is made to be equal to battery temperature regulatory demand power P 1, interior cold But the power P 4 of branch subtracts P1 equal to P.If it is determined that and battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set Temperature is then preferably interior offer cooling power, and control compressor 1 is run according to maximum refrigeration work consumption, the cooling branch 3 of car Cooling power is P4, and the cooling power of the cooling branch 4 of battery is P-P4.If vehicle interior temperature has reached set temperature, again Preferentially meet the cooling of battery 6.
As the P1 > P2 of battery 6, when the power that battery 6 needs to adjust is P3 (P3=P1-P2), if P1+P4+P3≤P, It is P3 that then compressor 1, which needs increased refrigeration work consumption, can be pumped by increasing the aperture of the second expansion valve 42 and/or improving 51 revolving speed is so that P1=P2.And if P1+P4+P3 > P, battery management controller judges whether battery temperature is greater than setting Temperature, for example, set temperature can be 45 DEG C, it is preferably that battery 6 provides cooling function if the temperature of battery is greater than 45 DEG C Rate, on-board air conditioner controller control compressor 1 and run according to maximum refrigeration work consumption, swollen by adjusting the first expansion valve 32 and second The aperture of swollen valve 42 increases the cooling power of the cooling branch 4 of battery by P3, so that P1=P2, the cooling function of the cooling branch 3 of car Rate is reduced.If it is determined that and battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably that car mentions It for cooling power, controls compressor 1 and is run according to maximum refrigeration work consumption, the cooling power of the cooling branch 3 of car is P4, and battery is cold But the cooling power of branch 4 is P-P4.If vehicle interior temperature has reached set temperature, and preferentially meets the cooling of battery 6, The cooling power of the cooling branch 4 of battery increases P3.
And if P1≤P2, on-board air conditioner controller maintains the power of compressor constant, or reduces compressor Power perhaps reduces the aperture of the second expansion valve 42 or reduces the revolving speed of pump 51, so that the cooling function of the cooling branch 4 of battery Rate decline.
When humidity control system work is in heating mode, the difference power of P1 and P2 are P3, i.e. P1-P2=P3.If P1 > P2, then the heating power of battery thermal management controller control heater 53 increases P3, and improves 51 revolving speeds of pump.If P1≤ P2, battery thermal management can be remained unchanged with the power of heater 53, or 53 power of heater is reduced P3, to save electric energy, Or reduce the revolving speed of pump 51.
If after refrigerating function opens preset time, such as after 1 hour, the temperature of battery 6 is still higher than 35 DEG C, then Increase the cooling power of battery.It is if battery mean temperature still is below 10 DEG C after heating function opens 1 hour, then electric Pond thermal management controller can suitably increase the power of heater 53.
If single compressor 1 is unable to satisfy power required when cooling battery 6, settable multiple compressors 1 are electricity Pond 6 provides cooling power.Such as on bus, usually there are 4 compressors, this 4 compressors can all be used for as electricity at this time Pond 6 provides cooling power.
According to one embodiment of present invention, the compressor 1 for providing refrigerant for battery is multiple, the cooling branch of car The cooling branch 4 of road 3 and battery be it is multiple, controller is also used to according to the temperature regulatory demand power P 1 of battery and each pressure The quantity of the compressor of the maximum refrigeration work consumption P judgement starting of contracting machine, and when humidity control system is refrigerating mode, control phase The compressor 1 of quantity is answered to start.
Specifically, when compressor 1 is multiple, correspondingly, interior cooling branch 3 and the cooling branch 4 of battery are multiple.It lifts For example, when the compressor 1 for providing refrigerant for battery 6 is 2, the cooling branch 3 of car and the cooling branch 4 of battery are 2 When, when humidity control system enters refrigerating mode, controller obtains the temperature regulatory demand power P 1 of battery 6, if battery 6 Temperature regulatory demand power P 1 be less than or equal to single compressor 1 maximum refrigeration work consumption, then controller control one compression Machine 1 starts.And if the temperature regulatory demand power P 1 of battery 6 is greater than the maximum refrigeration work consumption of single compressor 1, Controller controls two compressors 1 and starts work simultaneously, to meet the cooling refrigeration power demand of battery 6.
Compressor 1 is that multiple working principles and above-mentioned compressor 1 are one identical, to avoid redundancy, herein not It repeats again.
The humidity control system of on-vehicle battery according to an embodiment of the present invention can accurately be controlled according to the virtual condition of battery The heating power and cooling power of battery processed, are adjusted temperature when battery temperature is excessively high or when too low, make battery Temperature maintains preset range, avoid there is a situation where due to temperature influence on-vehicle battery performance.
Fig. 4 is the flow chart of the temperature control method of the on-vehicle battery of one embodiment according to the present invention.Such as Fig. 4 institute Show, the temperature control method of on-vehicle battery the following steps are included:
S1 obtains the temperature regulatory demand power P 1 of battery.
Further, as shown in figure 5, in an embodiment of the present invention, the temperature regulatory demand power for obtaining battery is specific Include:
S11 obtains the first parameter when battery opening temperature is adjusted, and generates the first temperature according to the first parameter and adjust need Seek power.
S12 obtains second parameter of the battery when temperature is adjusted, and generates second temperature regulatory demand according to the second parameter Power.
S13 generates temperature regulatory demand function according to the first temperature regulatory demand power and second temperature regulatory demand power Rate P1.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature generate first according to the first parameter Temperature regulatory demand power specifically includes: obtaining the first temperature difference Δ T between initial temperature and target temperature1.According to first Temperature difference Δ T1The first temperature regulatory demand power P 1 is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of battery within a preset time, by following Formula (2) generates second temperature regulatory demand power:
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
S2, the temperature for obtaining battery adjust actual power P2.
According to one embodiment of present invention, as shown in figure 5, the temperature adjusting actual power for obtaining battery specifically includes:
S21, obtains the inlet temperature and outlet temperature of the flow path for regulating cell temperature, and obtains coolant liquid and flow into stream The flow velocity v on road.
S22 generates second temperature difference Δ T according to inlet temperature and outlet temperature2。
S23, according to second temperature difference Δ T2Temperature, which is generated, with flow velocity v adjusts actual power P2.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power P 2:
ΔT2* C*m, (3)
Wherein, Δ T2Poor for second temperature, C is the specific heat capacity of battery, and m is the cross section that flow path is flowed through in the unit time Coolant liquid quality, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is the cross-sectional area of flow path.
In addition, flow sensor can also be substituted by flow sensor, m=Q* ρ, when Q is the unit that flow sensor measures The interior coolant rate for flowing through flow passage cross-sectional area.
S3 adjusts actual power P2 according to temperature regulatory demand power P 1 and temperature and the temperature of battery is adjusted.
Wherein, in an embodiment of the present invention, actual power P2 is adjusted according to temperature regulatory demand power P 1 and temperature to exist The temperature of battery is adjusted in object time, to reach target temperature.
Specifically, after vehicle powers on, judge whether battery needs to carry out temperature adjusting, obtain the first of battery if necessary Beginning temperature (i.e. Current Temperatures), target temperature and the object time t for reaching target temperature from initial temperature, wherein target temperature and Object time t can be preset according to the actual conditions of on-vehicle battery, then, calculate the first temperature tune according to formula (1) Save demand power.Meanwhile the average current I of battery within a preset time is obtained, and calculate second temperature according to formula (2) and adjust Demand power.Then, according to the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand The temperature of battery (is adjusted to the demand power of target temperature) by power P 1.Also, obtain the inlet temperature and outlet of battery Temperature, and stream flow rate information is obtained, temperature is calculated according to formula (3) and adjusts actual power P2.Finally, adjusting need according to temperature Power P 1 and temperature is asked to adjust actual power P2 control compressor or heater with different Power operations.The control as a result, Method can accurately control the time required for battery temperature is adjusted, and battery temperature adjusts actual power real-time, tunable, can be with Ensure that the temperature for completing on-vehicle battery within the object time is adjusted, so that the temperature of on-vehicle battery is maintained preset range, avoid sending out Raw the case where on-vehicle battery performance is influenced due to temperature.
According to one embodiment of present invention, as shown in fig. 6, the temperature control method of above-mentioned on-vehicle battery can also wrap It includes: detecting the temperature of battery, and judge whether temperature is greater than the first temperature threshold or is less than second temperature threshold value (S10- S20).When the temperature of battery is greater than the first temperature threshold, into refrigerating mode (S30).Wherein, the first preset temperature threshold can It to be preset according to the actual situation, such as can be 40 DEG C.When the temperature of battery is less than or equal to the first temperature threshold, into one Step ground judge whether the temperature of battery is less than second temperature threshold value, when the temperature of battery is less than second temperature threshold value, into adding Heat pattern (S40-S50).Wherein, the second preset temperature threshold can be preset according to the actual situation, such as can be 0 DEG C.
Specifically, after vehicle powers on, the temperature of real-time detection battery, and judged.If the temperature of battery is higher than 40 DEG C, illustrate that the temperature of battery at this time is excessively high, to avoid high temperature from having an impact the performance of battery, needs to carry out at cooling battery Reason controls compressor start into refrigerating mode, so that coolant liquid and battery carry out heat exchange to reduce the temperature of battery.And If the temperature of battery is lower than 0 DEG C, illustrate that the temperature of battery at this time is too low, to avoid low temperature from having an impact the performance of battery, It needs to carry out heating treatment to battery, into heating mode, controls heater and open, to provide heating power.It is understood that It is actual power P2 to be adjusted according to the temperature regulatory demand power P 1 and temperature of battery, temperature adjusting, Ke Yijing are carried out to battery 6 Time required for really control battery temperature is adjusted, and P2 real-time, tunable, it can be ensured that the temperature of battery is completed in object time t Degree is adjusted.Also, temperature regulatory demand power P 1 and temperature adjust actual power P2 and are easy to obtain.
As can be seen from the above embodiments, P1 consists of two parts, for cooling down battery, when battery needs cooling, and battery Initial temperature is 45 DEG C, and the cooling target temperature of battery is 35 DEG C, then battery, which drops to the heat that 35 DEG C of needs distribute from 45 DEG C, is It is fixed, pass through formula (1) i.e. Δ T1* C*M/t is directly calculated and can be obtained.Wherein, Δ T1For the initial temperature and target temperature Between the first temperature difference, t is the object time, and C is the specific heat capacity of battery, and M is the quality of the battery.Meanwhile battery is cold But during, there are electric discharge and charging process, this process can generate heat, and the heat of this part can also be straight by detection electric current It obtains, passes through formula (3) i.e. I2* R directly calculates the heating power of present battery, i.e. second temperature regulatory demand power. Wherein, I is average current, and R is the internal resistance of battery.Key point of the invention first is that cooling time it is adjustable and cooling when completing Between can accurately determine, the present invention be set based on object time t (t can according to user demand either vehicle actual design Situation changes).After object time t required for cooling complete has been determined, so that it may estimate out present battery cooling requirement Temperature regulatory demand power P 1, P1=Δ T1*C*M/t+I2*R.And start if it is heating function, then temperature regulatory demand power P1=Δ T1*C*M/t-I2* R, i.e., battery during heating, battery discharge or charging current are bigger, required heating Power, that is, temperature regulatory demand power P 1 is smaller.
Since the electric discharge either charging current of battery is variation, so I2* R is variation, therefore in order to better Ensure the accuracy of cooling time, cooling power also will with the either variation of charging current of the current averaged discharge of battery and Variation.If on-board air conditioner gives battery and compartment cooling simultaneously, when the discharge current of battery is lesser, I2* R will Reduce, on-board air conditioner can distribute more refrigeration work consumptions and be given to compartment at this time, so that compartment reaches setting temperature faster.Together When, when the electric discharge of battery or larger charging current, I2* R will be larger, and on-board air conditioner can distribute more refrigeration at this time Power is given to battery.Adjusting in this way, so that it is accurate always the time required to battery is cooling, while conjunction that again can be more efficient Reason utilizes the refrigeration work consumption of on-board air conditioner, without configuring the biggish air-conditioning of cooling power, causes the waste of refrigeration work consumption.
Since battery cooling time is influenced by cooling efficiency, since cooling efficiency is current by ambient temperature and battery The influence of temperature, during battery is cooling, the efficiency of humidity control system is also continually changing, so cooling efficiency is not It may be 100%, therefore required time accurately only can not be cooled down by regulating cell according to temperature regulatory demand power P 1, having must The temperature for detecting battery adjusts actual power P2.In the present invention, the temperature of battery, which adjusts actual power P2, can pass through public affairs Formula (3) i.e. Δ T2*C*m is calculated.P2 can also also can be by formula (4) i.e. by the practical cooling power P2 of battery Δ T3*C*m1 is calculated, and wherein Δ T3 is the temperature change of battery in a certain period of time, and C is the specific heat capacity of battery, and m1 is Battery quality.But since the quality of battery is larger, so temperature change is unobvious in the unit time, needing the long period just to see can To detect the temperature difference, requirement of real-time is not met, so calculating temperature generally according to formula (3) adjusts actual power P2.
It is influenced by cooling efficiency, temperature adjusts actual power P2 and is difficult to be equal to temperature regulatory demand power P 1, is Make the cooling object time t of battery more acurrate, needs to adjust practical function according to temperature regulatory demand power P 1 and temperature in real time Power difference between rate P2 is adjusted, to ensure the temperature regulatory demand power P 1 of battery and the temperature adjusting reality of battery Border power P 2 is equal.
Below in conjunction with the description of specifically embodiment how according to temperature regulatory demand power P 1 and the practical function of temperature adjusting The temperature of battery is adjusted in rate P2.
According to one embodiment of present invention, when current operating mode is refrigerating mode, as shown in fig. 7, according to temperature Degree regulatory demand power P 1 and temperature adjusting actual power P2 are adjusted the temperature of battery and specifically include:
S31, judges whether temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2.
S32 obtains temperature regulatory demand function if temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2 Rate P1 and temperature adjust the difference power between actual power P2, and increase the compressor for cooling down battery according to difference power Power.
S33 reduces the power of compressor if temperature regulatory demand power is less than or equal to temperature and adjusts actual power Or keep the power of compressor constant.
Specifically, when entering refrigerating mode, actual power P2 tune is adjusted according to temperature regulatory demand power P 1 and temperature Save the power of compressor 1.If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, illustrate if compressor is pressed It is run according to current power, the temperature of battery can not be made to be reduced to target temperature in object time t.Therefore continue to obtain temperature tune The difference power between demand power P1 and temperature adjusting actual power P2 is saved, and increases the power of compressor, temperature according to difference power It spends regulatory demand power P 1 and the difference power of temperature adjusting actual power P2 is bigger, the power increase of compressor is more, so that electric The temperature in pond is reduced to target temperature within a preset time.And if temperature regulatory demand power P 1 is less than or equal to temperature and adjusts in fact Border power P 2 can keep the power of compressor constant or the appropriate power for reducing compressor.When the temperature of battery is lower than 35 DEG C when, battery is cooling to be completed, and sends the information of closing temperature regulatory function to on-board air conditioner by CAN communication.If into cold But after the mode long period, such as after 1 hour, the temperature of battery is still higher than 35 DEG C, then suitably increases the power of compressor, with Battery is set to complete to cool down as early as possible.
According to one embodiment of present invention, as shown in fig. 7, when current operating mode is heating mode, according to temperature Degree regulatory demand power and temperature adjusting actual power are adjusted the temperature of battery and specifically include:
S34, judges whether institute's temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2.
S35 obtains temperature regulatory demand function if temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2 Rate P1 and temperature adjust the difference power between actual power P2, and increase the heater for heating battery according to difference power Power.
S36 keeps heater if temperature regulatory demand power P 1 is less than or equal to temperature and adjusts actual power P2 Power is constant.
Specifically, when entering heating mode, heater is opened, and is adjusted according to temperature regulatory demand power P 1 and temperature real The power of the adjusting heater of border power P 2.If temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2, illustrate such as Fruit heater is heated according to current power, then the temperature of battery can not be made to rise to target temperature within a preset time.Therefore Continue to obtain the difference power between temperature regulatory demand power P 1 and P2, and increase the power of heater according to difference power, wherein Temperature regulatory demand power P 1 and the difference that temperature adjusts actual power P2 are bigger, and the power of heater is increased more.And such as Fruit temperature regulatory demand power P 1 is less than or equal to temperature and adjusts actual power P2, and the power of heater can be kept constant.Work as electricity The temperature in pond is higher than preset temperature, such as at 10 DEG C, and battery heating is completed, and battery management controller is by CAN communication to battery Thermal management controller sends the information of closing temperature regulatory function, and controls heater closing.If longer into heating mode After time, such as after 1 hour, the temperature of battery still is below 10 DEG C, then suitably increases the power of heater, so that battery is as early as possible Complete heating.
According to one embodiment of present invention, as shown in figure 8, the temperature control method of above-mentioned on-vehicle battery can also wrap It includes:
S37 reduces the revolving speed of pump if temperature regulatory demand power P 1 is less than or equal to temperature and adjusts actual power P2 Or keep the revolving speed of pump constant.
S38 improves the revolving speed of pump if temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2.
Specifically, when entering heating mode or refrigeration mode, if temperature regulatory demand power P 1 is less than or equal to Temperature adjusts actual power P2, then the revolving speed for controlling pump reduces, to save electric energy or keep the revolving speed of pump constant.And if temperature It spends regulatory demand power P 1 and is greater than temperature adjusting actual power P2, in addition to the increase of the power of control heater or compressor, also control The revolving speed of system pump improves, and can increase the coolant liquid quality that cooling flowing path cross section is flowed through in the unit time, to improve temperature Actual power P2 is adjusted, to realize that the temperature of battery is adjusted within the object time.
According to one embodiment of present invention, when the compressor for providing refrigerant for battery is multiple, above-mentioned side Method can also include: the compressor according to the judgement starting of the maximum refrigeration work consumption of temperature regulatory demand power P 1 and each compressor Quantity.When for refrigerating mode, the compressor start of respective numbers is controlled.
Further, according to the pressure of the maximum refrigeration work consumption of temperature regulatory demand power P 1 and each compressor judgement starting The quantity of contracting machine specifically includes: judging whether the temperature regulatory demand power P 1 of battery is greater than the maximum refrigeration function of single compressor Rate.If it is greater than the maximum refrigeration work consumption of single compressor, then controls multiple compressors while starting.
For example, when the compressor 1 for providing refrigerant for battery is 2, when entering refrigeration mode, according to temperature The quantity of the compressor of the maximum refrigeration work consumption of regulatory demand power P 1 and each compressor judgement starting, if temperature, which is adjusted, to be needed Power P 1 is asked to be less than or equal to the maximum refrigeration work consumption of single compressor, then one compressor start of control.And if degree Regulatory demand power P 1 is greater than the maximum refrigeration work consumption of single compressor, then two compressors of control start work simultaneously, with Meet the cooling refrigeration power demand of battery.
It should be noted that in an embodiment of the present invention, battery can be single battery packet (by multiple battery cell structures At), it is also possible to be made of multiple battery pack series, parallel or mixed connection.When battery includes the battery pack of multiple parallel connections, need To the distribution of temperature regulation power is carried out between each battery pack, this needs to carry out power distribution by valve.
In summary, when humidity control system work is in refrigeration mode, if the temperature regulatory demand power P 1 of battery Sum with interior cooling requirement power P 4 then controls compressor and presses less than maximum refrigeration work consumption P, the i.e. P1+P4≤P5 of compressor It is run according to P1+P4 refrigeration work consumption.If P1+P4 > P, judge whether the temperature of battery is greater than set temperature (such as 45 DEG C), such as Fruit is greater than 45 DEG C, then is preferably that battery provides cooling power, control compressor is run according to maximum refrigeration work consumption, by battery The cold medium flux of cooling branch and interior cooling branch is controlled, and the cooling power of the cooling branch of battery is made to be equal to battery temperature Regulatory demand power P 1, the power P 4 of the cooling branch of car are equal to P and subtract P1.If it is determined that and battery temperature be not more than 45 DEG C, And vehicle interior temperature is also not up to set temperature, then is preferably interior offer cooling power, control compressor is according to the maximum function that freezes Rate operation, the cooling power of the cooling branch of car are P4, and the cooling power of the cooling branch of battery is P-P4.If it is determined that and battery Temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably interior offer cooling power, controls compressor 1 runs according to maximum refrigeration work consumption, and the cooling power of the cooling branch of car is P4, and the cooling power of the cooling branch of battery is P- P4.If vehicle interior temperature has reached set temperature, and preferentially meets the cooling of battery.
As the P1 > P2 of battery, when the power that battery needs to adjust is P3 (P3=P1-P2), if P1+P4+P3≤P5, It is P3 that then compressor 1, which needs increased refrigeration work consumption, and cold medium flux and/or the raising of branch can be cooled down by increasing battery The revolving speed of pump is so that P1=P2.And if P1+P4+P3 > P, battery management controller judges whether battery temperature is greater than setting Temperature, for example, set temperature can be 45 DEG C, it is preferably that battery provides cooling power if the temperature of battery is greater than 45 DEG C, Control compressor run according to maximum refrigeration work consumption, increases the cooling power of the cooling branch of battery, interior cooling branch it is cold But power is reduced.If it is determined that and battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably vehicle Interior offer cooling power, control compressor are run according to maximum refrigeration work consumption, and the cooling power of the cooling branch of car is P4, battery The cooling power of cooling branch is P-P4.If vehicle interior temperature has reached set temperature, preferentially meet the cooling of battery, electricity The cooling power of the cooling branch in pond increases P3.
And if P1≤P2, it maintains the power of compressor constant, perhaps reduces the power of compressor or reduce electricity The cold medium flux of the cooling refrigeration in pond, or the revolving speed of pump is reduced, so that the cooling power decline of the cooling branch of battery.
When humidity control system work is in heating mode, the difference power of P1 and P2 are P3, i.e. P1-P2=P3.If P1 > P2, then the heating power for controlling heater increases P3, and improves revolution speed.If P1≤P2, can be protected with the power of heater It holds constant, or heater power is reduced into P3, to save electric energy, or reduce the revolving speed of pump.
If after refrigerating function opens preset time, such as after 1 hour, the temperature of battery is still higher than 35 DEG C, then Increase battery cooling power demand.If battery mean temperature still is below 10 DEG C, then after heating function opens 1 hour Battery thermal management controller can suitably increase the power of heater.
The temperature control method of on-vehicle battery according to an embodiment of the present invention obtains the temperature regulatory demand function of battery first Rate, then the temperature adjusting actual power of battery is obtained, actual power is finally adjusted according to temperature regulatory demand power and temperature and is existed The temperature of battery is adjusted in object time, to reach target temperature.This method can accurately control the temperature of battery as a result, Regulating time, and the temperature of battery adjusts actual power real-time, tunable, it can be ensured that according to on-vehicle battery within the object time Virtual condition accurately controls the heating power and cooling power of vehicle-mounted battery, on-vehicle battery when the temperature is excessively high or it is too low when Temperature is adjusted, the temperature of on-vehicle battery is made to maintain preset range, avoids occurring to influence on-vehicle battery due to temperature The case where energy.
In addition, the present invention also proposes a kind of non-transitorycomputer readable storage medium, it is stored thereon with computer program, The program realizes the temperature control method of above-mentioned on-vehicle battery when being executed by processor.
Non-transitorycomputer readable storage medium according to an embodiment of the present invention, the temperature of acquisition battery first are adjusted and are needed Power is sought, then obtains the temperature adjusting actual power of battery, practical function is finally adjusted according to temperature regulatory demand power and temperature Rate is adjusted in the temperature to battery, so as to on-vehicle battery when the temperature is excessively high or it is too low when temperature is adjusted Section, so that the temperature of on-vehicle battery is maintained preset range, avoid occur due to temperature influence on-vehicle battery performance.
And when the quantity of the battery 6 of vehicle is multiple, and multiple batteries 6 are connected in parallel, for example, the quantity of battery 6 is 2 It is a, respectively the first battery 61 and the second battery 62, as shown in figure 9, the humidity control system of on-vehicle battery include: compressor 1, The cooling branch 4 of condenser 2, battery and battery temperature adjustment module 5.
Wherein, condenser 2 is connected with compressor 1, and the cooling branch 4 of battery is connected between compressor 1 and condenser 2.Electricity Pond temperature adjustment module 5 is connected with the battery 6 of multiple parallel connections and the cooling branch 4 of battery, obtains the temperature of the battery of multiple parallel connections Regulatory demand power P 1 and temperature adjust actual power P2, and respectively according to the temperature regulatory demand power of the battery of multiple parallel connections P1 and temperature adjust actual power P2 and the temperature of the battery of multiple parallel connections are adjusted.
Further, according to one embodiment of present invention, respectively according to the temperature regulatory demand of the battery of multiple parallel connections Power P 1 and temperature adjust actual power P2 and the temperature of the battery of multiple parallel connections are adjusted, and specifically include: respectively according to more The temperature regulatory demand power P 1 and temperature of the battery of a parallel connection adjust actual power P2 in object time t to multiple parallel connections The temperature of battery is adjusted, to reach target temperature.
That is, battery temperature adjustment module 5 is carrying out temperature tune to each battery 6 according to the P1 and P2 of each battery When section, it can be ensured that in object time t according to the virtual condition of each battery 6 accurately control on-vehicle battery heating power and Cooling power, thus on-vehicle battery when the temperature is excessively high or it is too low when temperature is adjusted.
When vehicle interior temperature is excessively high, interior refrigerating function starting, the flow direction of coolant liquid are as follows: 1-condenser of compressor 2-interior cooling 3-compressors of branch 1.When the first battery 61 when the temperature is excessively high, battery refrigerating function starting, first pipe With the flow direction of coolant liquid in second pipe are as follows: the cooling 4-compressor of branch 1 of compressor 1-condenser, 2-battery；Battery Cooling the 5-the first battery of 4-battery temperature of branch adjustment module 61-battery temperature, 5-battery of adjustment module cools back branch 4.When the second battery 62 when the temperature is excessively high, the flow direction of coolant liquid in first pipe and second pipe are as follows: compressor 1-cold 2-battery of condenser cools down 4-compressor of branch 1；Battery cools back branch road the 5-the second battery of 4-battery temperature adjustment module 62-battery temperature 5-batteries of adjustment module cool down branch 4.
The refrigeration work consumption of battery temperature adjustment module 5 is provided by on-board air conditioner, shares refrigerating capacity with interior refrigeration system, from And the volume of humidity control system can be reduced, and keep the distribution of coolant rate more flexible.Thus, it is possible to according to each electricity The virtual condition in pond accurately controls the heating power and cooling power of each battery, thus on-vehicle battery when the temperature is excessively high or Temperature is adjusted when too low, the temperature of on-vehicle battery is made to maintain preset range, avoids occurring to influence due to temperature vehicle-mounted The case where battery performance.
Further, according to one embodiment of present invention, as shown in Figure 4 and Figure 5, the cooling branch 4 of battery may include Heat exchanger 41, heat exchanger 41 include first pipe and second pipe, and second pipe is connected with battery temperature adjustment module 5, and first Pipeline is connected with compressor 1, wherein first pipe with second pipe is mutually independent closes on setting.
Battery temperature adjustment module 5 may include: the flow path (not specifically illustrated in figure) of regulating cell temperature, flow path setting Among battery 6.Pump 51, media Containers 52, heater 53 and the controller (figure being connected between flow path and heat exchanger 41 In it is not specifically illustrated).Wherein, controller obtains the temperature regulatory demand power P 1 and battery of the battery 6 of multiple parallel connections respectively Temperature adjusts actual power P2, and adjusts actual power P2 according to the temperature regulatory demand power P 1 and temperature of each battery respectively The temperature of each battery 6 is adjusted.The cooling branch 3 of car may include: evaporator 31, the first expansion valve 32 and the first electricity Sub- valve 33.The cooling branch 4 of battery can also include the second expansion valve 42 and the second electronic valve 43.
It is understood that the cooling branch 4 of battery can also be not provided with heat exchanger 41, when not having heat exchanger 41, battery What is flowed in cooling branch 4 is exactly refrigerant.If heat exchanger 41 is arranged, what is flowed in first pipe in the cooling branch 4 of battery is Refrigerant, the interior stream of second pipe is coolant liquid, and what is flowed in interior cooling circuit is exactly refrigerant.
An embodiment according to the present invention, as shown in figure 9, battery temperature adjustment module 5 further includes being arranged in flow path Entrance the first temperature sensor 55, the second temperature sensor 56 and flow sensor 57 of the outlet of flow path are set. It is appreciated that the entrance and exit position of flow path is not absolute, determining according to the steering of pump 51.
Specifically, controller may include battery management controller, battery thermal management controller, on-board air conditioner controller. Wherein, battery thermal management controller can be with the 51, first temperature sensor 51 of pump, second temperature sensor 52 and flow sensor 57 electrical connections, and according to the specific heat capacity of medium, the density of medium, obtain multiple batteries in parallel connection temperature adjust actual power P2, And control the revolving speed of pump 51.Battery management controller acquisition flows through the temperature of electric current, the battery itself of battery, and according to battery The specific heat capacity C of target temperature, object time t and battery, the mass M of battery, battery internal resistance R, obtain temperature regulatory demand Power P 1, and control on-board air conditioner controller start or stop work.On-board air conditioner controller and compressor 1, expansion valve and The temperature regulatory demand power P 1 and battery thermal management controller that electronic valve is electrically connected to be obtained according to battery management controller The temperature of acquisition adjusts the folding of the power P, expansion valve and electronic valve of actual power P2 control compressor, reaches control heat exchange amount Purpose.
Heat exchanger 41 can be plate heat exchanger, and plate heat exchanger may be mounted inside on-board air conditioner, so that entire system Refrigerant circuit convenient for on-board air conditioner factory debugging, and allows on-board air conditioner individually to supply and group inside on-board air conditioner Dress, meanwhile, on-board air conditioner only needs to fill primary coolant during the installation process.
Coolant liquid from the entrance of flow path flow into battery 6 inside, from the outlet of flow path flow out, thus realize battery 6 with it is cold But the heat exchange between liquid.
Pump 51 is mainly used for providing power, and media Containers 52 are mainly used for storing coolant liquid and receive to humidity control system The coolant liquid of addition, when the coolant liquid in humidity control system is reduced, the coolant liquid in media Containers 52 can be automatically replenished.Add Hot device 53 can (Positive Temperature Coefficient, positive temperature coefficient refer to positive temperature coefficient for PTC Very big semiconductor material or component) heater, can with controller carry out CAN (Controller Area Network, Controller local area network) communication, heating power is provided for the humidity control system of on-vehicle battery, is controlled by the controller.Heat Device 53 is not direct to be contacted with battery 6, safety with higher, dependable with function.
Temperature of first temperature sensor 55 to detect path inlet coolant liquid, second temperature sensor 56 is to detect The temperature of flowing path outlet coolant liquid.Flow sensor 57 is believed to detect the flow velocity of coolant liquid in pipeline in humidity control system Breath.First electronic valve 33 can be used to control interior cold to control opening and closing for interior cooling branch 3, the first expansion valve 32 But the coolant rate in branch 3.Second electronic valve 43 is to control opening and closing for the cooling branch 4 of battery, the second expansion Valve 42 can be used for controlling the coolant rate in the cooling branch 4 of battery.Valve is additionally provided at the path inlet of each battery 6 58.Controller can be controlled respectively by control valve 58 according to each 6 corresponding P1 and P2 of battery and flow into the cold of each battery 6 But flow quantity, so as to accurately control heating power/refrigeration work consumption of each battery 6.According to one embodiment of present invention, Controller is also used to generate total moisture content regulatory demand power P z according to the temperature regulatory demand power P 1 of the battery of multiple parallel connections, and Judge whether total moisture content regulatory demand power P z matches with the maximum refrigeration work consumption P of on-board air conditioner, wherein if it does, then control Device processed is cooled down according to the battery 6 that the temperature regulatory demand power P 1 of the battery of multiple parallel connections is multiple parallel connections.If not Match, then controller is multiple according to the temperature regulatory demand power P 1 of the maximum refrigeration work consumption P of air-conditioning and the battery of multiple parallel connections Battery 6 in parallel is cooled down.
Specifically, as shown in figure 9, controller can calculate entirely according to the temperature regulatory demand power P 1 of each battery The total moisture content regulatory demand power P z of humidity control system can obtain the addition of temperature regulatory demand power P 1 of each battery To total moisture content regulatory demand power P z.Then according to total moisture content regulatory demand power P z judge Pz whether the maximum with on-board air conditioner Refrigeration work consumption P matching, that is, judge whether Pz is less than or equal to P, if it is, controller adjusts need according to the temperature of each battery Power P 1 is asked to cool down by the power of control valve 58 or control compressor 1 to each battery.And if PZWith it is vehicle-mounted The maximum refrigeration work consumption P of air-conditioning is mismatched, i.e. Pz is greater than P, then controller is according to the maximum refrigeration work consumption P of air-conditioning and each electricity The temperature regulatory demand power P 1 in pond carries out coolant rate distribution by the aperture of control valve 58 in proportion, so as to Each battery 6 is set to complete cooling with maximal efficiency.
The temperature adjusting need how battery temperature adjustment module 5 obtains each battery 6 are described combined with specific embodiments below Power P 1 and temperature is asked to adjust actual power P2.
According to one embodiment of present invention, controller can be used for obtaining respectively when each battery opening temperature is adjusted First parameter, and the first temperature regulatory demand power of each battery is generated according to the first parameter, and obtain each electricity respectively Second parameter of the pond when temperature is adjusted, and the second temperature regulatory demand power of each battery is generated according to the second parameter, and Each electricity is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of each battery and each battery The temperature regulatory demand power P 1 in pond.
Further, according to one embodiment of present invention, the first parameter is initial temperature when 6 opening temperature of battery is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature, controller obtain initial temperature and target temperature The first temperature difference Δ T between degree1, and according to the first temperature difference Δ T1The first temperature regulatory demand function is generated with object time t Rate.
Further, controller generates the first temperature regulatory demand power by following formula (1):
ΔT1* (1) C*M/t,
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is battery 6 Specific heat capacity, M are the quality of battery 6.
Second parameter is the average current I of each battery 6 within a preset time, and controller is generated by following formula (2) Second temperature regulatory demand power:
I2* R, (2),
Wherein, I is average current, and R is the internal resistance of battery 6.
When being cooled down to battery 6, P1=Δ T1*C*M/t+I2*R；When being heated to battery 6, P1=Δ T1* C*M/t-I2*R。
According to one embodiment of present invention, controller respectively according to the first temperature sensor 55 detection inlet temperature and The outlet temperature that second temperature sensor 56 detects generates second temperature difference Δ T2, and according to the second temperature difference Δ of each battery T2The temperature that the flow velocity v detected with flow sensor 57 generates each battery adjusts actual power P2.
Further, according to one embodiment of present invention, the practical function of temperature adjusting is generated according to by following formula (3) Rate P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is the cross of flow path Sectional area.
Specifically, after vehicle powers on, battery management controller judges whether vehicle needs to carry out temperature adjusting, if it is determined that Vehicle needs temperature to adjust, for example, the temperature of battery 6 is excessively high, then sends opening temperature to on-board air conditioner by CAN communication and adjusts The information of function sends heat exchange information after on-board air conditioner controller opening temperature regulatory function and gives battery thermal management controller, Vehicle Controller controls the second electronic valve 43 and opens simultaneously, and battery thermal management controller control pump 51 is to default (such as low turn of revolving speed Speed) it starts to work.
Meanwhile battery management controller obtains the initial temperature (i.e. Current Temperatures) of each battery 6, target temperature and from first Beginning temperature reaches the object time t of target temperature, and wherein target temperature and object time t can be carried out pre- according to the actual situation And if calculating the first temperature regulatory demand power of each battery according to formula (1).Meanwhile battery management controller also divides Not Huo Qu the average current I of battery 6 within a preset time, and calculate each battery second temperature regulatory demand according to formula (2) Power.Then, battery management controller is according to the first temperature regulatory demand power and second temperature regulatory demand of each battery 6 The temperature of battery 6 (is adjusted to the demand function of target temperature by power calculation temperature regulatory demand power P 1 within the object time Rate), wherein when being cooled down to battery 6, P1=Δ T1*C*M/t+I2* R, when being heated to battery 6, P1=Δ T1*C*M/t-I2*R。
Also, battery thermal management controller obtains the first temperature sensor 55 and second that each battery is correspondingly arranged respectively Temperature sensor 56 detects temperature information, and obtains the flow rate information that flow sensor 57 detects respectively, respectively according to formula (3) The temperature for calculating each battery 6 adjusts actual power P2.
Finally, on-board air conditioner controller adjusts reality according to the corresponding temperature regulatory demand power P 1 of each battery 6, temperature Power P 2 controls the coolant rate for flowing into each battery 6 by control valve 58 respectively, so as to accurately control each electricity Heating power/the refrigeration work consumption in pond 6.For example, if the temperature regulatory demand power P 1 of the first battery 61 is greater than the second battery 62 Temperature regulatory demand power P 1, then controller can control increase 61 place circuit of the first battery valve 58 aperture, subtract The aperture of the valve 58 in small second battery, 62 place circuit.
And if the temperature of battery 6 is lower, on-board air conditioner controller controls the second electronic valve 43 and closes, battery thermal management control Device control heater 53 processed starts, and battery thermal management controller adjusts practical function according to temperature regulatory demand power P 1 and temperature The heating power of rate P2 control heater 53 prevents temperature so that the temperature of battery 6 is increased to target temperature in object time t Spend the high working performance for influencing battery 6.Thus, it is possible to ensure that the virtual condition within the object time according to each battery is accurate Control the heating power and cooling power of each battery, thus on-vehicle battery when the temperature is excessively high or it is too low when to temperature carry out It adjusts.
Specifically, as can be seen from the above embodiments, temperature regulatory demand power P 1 consists of two parts, with the first battery 61 For, when the first battery 61 needs cooling, 61 initial temperature of the first battery is 45 DEG C, and target temperature is 35 DEG C, then battery from 45 DEG C drop to 35 DEG C need the heat that distributes be it is fixed, pass through formula (1) i.e. Δ T1* C*M/t is directly calculated and can be obtained.Together When, in cooling procedure, there are electric discharge and charging process, this process can generate heat, the heat of this part to the first battery 61 It can be directly obtained by detecting the average current I of the first battery, pass through formula (3) i.e. I2* R directly calculates current first The heating power of battery 61, i.e. second temperature regulatory demand power.The cooling deadline of the invention is set based on object time t Fixed (t can change according to user demand either vehicle actual design situation).Mesh required for cooling complete is being determined After marking time t, so that it may estimate out the temperature regulatory demand power P 1 of current first battery, 61 cooling requirement, P1=Δ T1*C* M/t+I2*R.And start if it is heating function, then temperature regulatory demand power P 1=Δ T1*C*M/t-I2* R, i.e., first During heating, the electric discharge of the first battery 61 or charging current are bigger for battery 61, required heating power, that is, temperature tune It is smaller to save demand power P1.
Since the electric discharge either charging current of electric first battery 61 is variation, so I2* R is variation, therefore is Preferably ensure that the accuracy of cooling time, cooling power also will either be filled with the first battery 61 current averaged discharge The variation of electric current and change.If on-board air conditioner gives the first battery 61 and compartment cooling simultaneously, when the first battery 61 When discharge current is lesser, I2* R will reduce, and can distribute more refrigeration work consumptions at this time and be given to compartment so that compartment compared with Fast reaches setting temperature.Meanwhile when the electric discharge or larger charging current of the first battery 61, I2* R will be larger, at this time On-board air conditioner can distribute more refrigeration work consumptions and be given to the first battery 61.Adjusting in this way, so that needed for battery is cooling Time is accurate always, while the reasonable refrigeration work consumption using on-board air conditioner that again can be more efficient, without configuring cooling power Biggish on-board air conditioner causes the waste of refrigeration work consumption.
Battery is influenced cooling time by cooling efficiency, since cooling efficiency is by ambient temperature and battery Current Temperatures Influence, during the first battery 61 is cooling, the efficiency of humidity control system be also it is continually changing, so cooling efficiency It is unlikely to be 100%, therefore is only the time that can not accurately adjust the cooling of the first battery 61 according to P1, it is necessary to detect The temperature of one battery 61 adjusts actual power P2.In the present invention, the temperature of the first battery 62 adjusts actual power P2 and can lead to Formula (3) i.e. Δ T2*c*m is crossed to be calculated.P2 also can also can pass through formula (4) by the practical cooling power of battery That is Δ T3*C*m1 is calculated, and wherein Δ T3 is the temperature change of the first battery 61 in a certain period of time, and C is the first battery 61 specific heat capacity, m1 are 61 mass of the first battery.But since the quality of general battery is larger, so temperature change in the unit time It is unobvious, need the long period just to can detecte out the temperature difference, so calculating temperature generally according to formula (3) adjusts actual power P2。
When the second battery 62 needs to carry out temperature adjusting, temperature regulatory demand power P 1 and temperature adjust actual power P2 acquisition modes are identical as the above-mentioned principle of the first battery 61, and details are not described herein again.
It is influenced by cooling efficiency, temperature adjusts actual power P2 and is difficult to be equal to temperature regulatory demand power P 1, is Make the cooling object time t of each battery 6 more acurrate, needs to be adjusted according to temperature regulatory demand power P 1 and temperature in real time Power difference between actual power P2 is adjusted, to ensure the temperature regulatory demand power P 1 of battery 6 and the temperature of battery It is equal to adjust actual power P2.
Below in conjunction with the description of specifically embodiment how according to the temperature regulatory demand power P 1 and temperature of each battery 6 Actual power P2 is adjusted the temperature of each battery 6 is adjusted.
According to one embodiment of present invention, controller is also used to detect the temperature of the battery of multiple parallel connections, and multiple When having the temperature of at least one battery to be greater than the first temperature threshold in battery 6 in parallel, control humidity control system enters cooling Mode, and when having in multiple batteries in parallel connection 6 temperature of at least one battery be less than second temperature threshold value, control temperature is adjusted System enters heating mode.Wherein, the first temperature threshold and second temperature threshold value can be preset according to the actual situation, example Such as, the first temperature threshold can be 40 DEG C, and second temperature threshold value can be 0 DEG C.
Specifically, after vehicle powers on, the temperature of each battery 6 of battery management controller real-time detection, and judged.Such as Fruit wherein some battery 6 temperature be higher than 40 DEG C, illustrate that the temperature of the battery 6 at this time is excessively high, to avoid high temperature to the battery 6 Performance have an impact, need to carry out the battery 6 cooling processing, battery management controller control humidity control system enter it is cold But mode, concurrent power transmission pond refrigerating function starting information give on-board air conditioner controller, and on-board air conditioner controller is receiving battery The unlatching of the second electronic valve 43 is controlled after refrigerating function starting information, so that coolant liquid and battery 6 carry out heat exchange to reduce the electricity The temperature in pond 6.As shown in figure 9,61 institute of the first battery is corresponding in the loop when humidity control system work is in refrigerating mode The flow direction of coolant liquid is respectively as follows: the 2-the second electronic valve 43-the of 1-condenser of compressor in first pipe and second pipe Two 42-heat exchanger of expansion valve, 41-compressors 1；52-heat exchanger of media Containers, 41-heater 53 (closing)-pumps 51-valves 58-the first temperature sensor the 55-the first battery 61-second temperature sensor, 56-flow sensor, 57-media Containers of door 52, it so recycles, exchanges heat at heat exchanger 41, realize the cooling of the first battery 61.Second battery, 62 institute first manages in the loop The flow direction of coolant liquid is respectively as follows: the expansion of the 2-the second electronic valve 43-the second of 1-condenser of compressor in road and second pipe 42-heat exchanger of valve, 41-compressor 1；52-heat exchanger of media Containers, 41-heater 53 (closing)-pump, 51-valve 58- First 57-media Containers of temperature sensor the 55-the second battery 62-second temperature sensor, 56-flow sensor 52, so Circulation exchanges heat at heat exchanger 41, realizes the cooling of the second battery 62.
And if the temperature of some battery 6 is lower than 0 DEG C, illustrate that the temperature of the battery 6 at this time is too low, to avoid low temperature to this The performance of battery 6 has an impact, and needs to carry out the battery 6 heating treatment, battery management controller controls humidity control system Into heating mode, concurrent power transmission pond heating function starts information to on-board air conditioner controller.On-board air conditioner controller is receiving It controls the second electronic valve 43 after starting information to battery heating function to close, and battery thermal management controller controls heater 53 open, to provide heating power for humidity control system.When humidity control system work in heating mode, the first battery 61 and second the flow direction of coolant liquid in battery 62 be respectively as follows: 52-heat exchanger of media Containers, 41-heater 53 (unlatching) 51-56-flow sensor of valve 58- the first temperature sensor 61-second temperature sensor of the 55-the first battery 57 of-pump- Media Containers 52；52-heat exchanger of media Containers, 41-heater 53 (unlatching)-pumps the 51-the first temperature sensor 55-the second 57-media Containers of battery 62-second temperature sensor, 56-flow sensor 52 so recycle, and realize the heating of battery 6. It is appreciated that by the adjustable coolant rate for flowing into each battery 6 of aperture of control valve 58, to adjust each electricity Heating/the cooling power in pond.
According to one embodiment of present invention, when humidity control system work is in refrigerating mode, controller is in some electricity When the temperature regulatory demand power P 1 in pond 6 temperature corresponding greater than the battery adjusts actual power P2, the temperature of the battery is obtained Regulatory demand power P 1 and temperature adjust the difference power between actual power P2, and are increased according to difference power for cooling down battery 6 Compressor power, or increase battery 6 coolant rate, to increase the cooling power of battery 6, and in some battery When 6 temperature regulatory demand power P 1 is less than or equal to temperature adjusting actual power P2, reduces the power of compressor or keep pressure The power of contracting machine is constant, or adjusts the coolant rate for reducing battery, to reduce the cooling power of battery 6.
Specifically, if battery 6 is multiple and when being connected in parallel, when humidity control system work is in refrigerating mode, electricity Pond Management Controller obtains the temperature regulatory demand power P 1 of battery, and the temperature that battery thermal management controller obtains battery adjusts real Border power P 2, on-board air conditioner controller adjust actual power P2 according to temperature regulatory demand power P 1 and temperature and are judged.Such as Fruit wherein some battery 6 temperature regulatory demand power P 1 be greater than temperature adjust actual power P2, illustrate if according to current Cooling power or coolant rate, the cooling of the battery 6 can not be completed within the object time, so, on-board air conditioner control Device obtains the difference power between the temperature regulatory demand power P 1 of the battery and temperature adjusting actual power P2, and according to difference power Increase the power of compressor 1, or increase the coolant rate of the battery, that is, increase the aperture of the second expansion valve 42, to increase The cooling power of the battery, wherein the difference power of temperature regulatory demand power P 1 and temperature adjusting actual power P2 are bigger, compression The power of machine 1 and the coolant rate increase of the battery are more, so that the temperature of the battery is reduced to mesh in preset time t Mark temperature.And if wherein the temperature regulatory demand power P 1 of some battery 6 is less than or equal to temperature adjusting actual power P2, vehicle Carrying air-conditioner controller can keep the power of compressor 1 constant or the appropriate power for reducing compressor 1, or reduce the battery Coolant rate reduces the aperture of the second expansion valve 42, to reduce the cooling power of battery.When the temperature of all batteries 6 is low When 35 DEG C, then battery 6 is cooling completes, and battery management controller sends closing temperature to on-board air conditioner by CAN communication and adjusts The information of function, on-board air conditioner controller control the second electronic valve 43 and close.If humidity control system enter refrigerating mode compared with After long-time, such as after 1 hour, still there is the temperature of battery 6 to be higher than 35 DEG C, then suitably increase the cooling power of battery again, so that The battery is completed to cool down as early as possible.
According to one embodiment of present invention, when humidity control system work is in heating mode, controller is in some electricity When the temperature regulatory demand power P 1 in pond is greater than temperature adjusting actual power P2, the temperature regulatory demand power P 1 of the battery is obtained And temperature adjusts the difference power between actual power P2, and increases the function for heating the heater 53 of battery according to difference power Rate, or the coolant rate for increasing battery is adjusted, to increase the heating power of battery, and the temperature adjusting in some battery When demand power P1 is less than or equal to temperature adjusting actual power P2, reduced power, or keep the power of heater 53 constant, Or the coolant rate for reducing battery is adjusted, to reduce the heating power of battery.
Specifically, if battery is multiple and when being connected in parallel, the battery when humidity control system works in heating mode Management Controller obtains the temperature regulatory demand power P 1 of battery, and the temperature that battery thermal management controller obtains battery adjusts practical Power P 2.If wherein the temperature regulatory demand power P 1 of some battery 6 is greater than temperature adjusting actual power P2, illustrate such as Fruit can not complete the heating of the battery 6 according to current heating power or coolant rate within the object time, so, electricity Pond thermal management controller obtains the difference power between the P1 of the battery and P2, and is increased according to difference power for heating battery 6 The power of heater 53, or the coolant rate for increasing battery is adjusted, such as can be with the revolving speed of increasing pump 51, so that the battery Temperature adjusting can be completed within the object time.Wherein, temperature regulatory demand power P 1 and temperature adjust the difference of actual power P2 Value is bigger, and the power of heater 53 and the coolant rate of the cell circuit are increased more.And if the temperature of some battery Regulatory demand power P 1 is less than or equal to temperature and adjusts actual power P2, and controller can suitably reduce the power of heater 53, Or keep the power of heater 53 constant, or adjust the coolant rate for reducing the cell circuit, to reduce adding for the battery Thermal power.When the temperature of all batteries 6 is higher than preset temperature, such as at 10 DEG C, the heating of battery 6 is completed, battery management controller The information of closing temperature regulatory function is sent to on-board air conditioner by CAN communication, battery thermal management controller controls heater 53 It closes.If after humidity control system enters the heating mode long period, such as after 1 hour, still having the temperature of battery 6 lower than 10 DEG C, then battery thermal management controller can suitably increase the power of heater 53 and the revolving speed of pump 51 again, so that the battery is as early as possible Complete heating.
According to one embodiment of present invention, controller is also used to small in the temperature regulatory demand power P 1 of some battery When corresponding temperature adjusts actual power P2, the revolving speed of pump 51 is reduced, and in the temperature regulatory demand power P 1 of some battery When adjusting actual power P2 greater than corresponding temperature, the revolving speed of pump 51 is improved.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the temperature tune of some battery 6 It saves demand power P1 and is less than temperature adjusting actual power P2, the revolving speed of controller control pump 51 reduces, to save electric energy.And if The temperature regulatory demand power P 1 of some battery 6 is greater than temperature and adjusts actual power P2, and controller is except control heater 53, compression The power of machine 1 increases or the coolant rate increase in battery place circuit is outer, also the revolving speed raising of control pump 51, can increase The coolant liquid quality of cooling flowing path cross section is flowed through in unit time, so that the temperature for improving the battery adjusts actual power P2, To realize that temperature is adjusted in object time t.
If single compressor 1 is unable to satisfy power required when cooling multiple batteries 6, settable multiple compressors 1 Cooling power is provided for battery 6.Such as on bus, usually there are 4 compressors, can all be used for this 4 compressors at this time Cooling power is provided for battery 6.
According to one embodiment of present invention, if the compressor 1 for providing refrigerant for battery is multiple, controller It is also used to the pressure of the maximum refrigeration work consumption P judgement starting of the temperature regulatory demand power P 1 and each compressor according to each battery The quantity of contracting machine, and when humidity control system is refrigerating mode, the compressor 1 for controlling respective numbers starts.
Further, controller can generate total moisture content regulatory demand according to the temperature regulatory demand power P 1 of each battery Power P z, controller is when judging that total moisture content regulatory demand power P z is greater than the maximum refrigeration work consumption P of single compressor, control Multiple compressors 1 start simultaneously.
For example, when the compressor 1 for providing refrigerant for multiple batteries 6 is 2, enter cooling in humidity control system When mode, controller obtains the P1 of each battery 6 respectively, and the P1 of each battery addition can be calculated entire temperature and adjust system The total moisture content regulatory demand power P z of system.If Pz is less than or equal to the maximum refrigeration work consumption of single compressor 1, controller control A compressor 1 is made to start.And if Pz is greater than the maximum refrigeration work consumption of single compressor 1, controller control two A compressor 1 starts work simultaneously, to meet the cooling refrigeration power demand of battery 6.
To make those skilled in the art be more clearly understood that the present invention, described shown in Fig. 9 below with reference to specifically embodiment On-vehicle battery humidity control system the course of work.
Battery 6 includes the first battery 61 and the second battery 62, Pz=P11+P12, and P11 is that the temperature of the first battery 61 is adjusted Demand power, P12 are the demand power that 62 temperature of the second battery is adjusted, and Pz is the temperature tune of the first battery 61 and the second battery 62 Save the sum of demand power (total moisture content regulatory demand power P z).Pf=P21+P22, P21 are that the temperature of battery 61 adjusts practical function Rate, P22 are that the temperature of battery 62 adjusts actual power, and Pf is the temperature adjusting actual power of the first battery 61 and the second battery 62 The sum of.
When the temperature of some battery is greater than the first temperature threshold (such as 40 DEG C), the humidity control system work of on-vehicle battery Make in refrigerating mode, if total moisture content regulatory demand power P z and interior cooling requirement power P 4 and be less than compressor maximum system Cold power P, i.e. Pz+P4≤P then control compressor 1 and run according to Pz+P4 refrigeration work consumption.It is appreciated that Pz < in this case P, P4 < P.
If Pz+P4 > P, judge whether the first battery 61 or the temperature of the second battery 62 are greater than 45 DEG C, if greatly In 45 DEG C, then being preferably that battery is cooling provides cooling power, and controller control compressor 1 is run according to maximum refrigeration work consumption P, The cooling power of the cooling branch 4 of battery is Pz, and the cooling power of the cooling branch 3 of car is equal to P-Pz.
If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably that car mentions For cooling power, compressor 1 is run according to maximum refrigeration work consumption P, and the cooling power of the cooling branch of car is P4, the cooling branch of battery The cooling power on road is equal to P-P4.The cooling branch of first battery 61 and the cooling branch of the second battery 62 proportionally reduce cooling function Rate.Ratio can be with are as follows: (P-P4)/(P11+P12).If vehicle interior temperature has reached set temperature, preferentially meet battery Cooling power.
It is that the temperature of first battery 61 and the second battery 62 adjusts actual power and need to adjust as Pz > Pf for Pf Power is Pc (Pc=Pz-Pf).If Pz+P4+Pc≤P, the refrigeration work consumption that compressor needs to increase is Pc, and it is swollen to increase second The aperture of swollen valve 42 improves the revolving speed of pump 51.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increases Greatly, so that the cooling power of the first battery 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2 then control the second battery 58 aperture of regulating valve at 62 places circuit increases, so that the cooling power of the second battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1 then keeps the cooling power of the first battery 61 constant, or the adjusting in control 61 place circuit of the first battery 58 aperture of valve is reduced, so that the cooling power of the first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2, then keep The cooling power of second battery 62 is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that the The cooling power of two batteries 62 is reduced.
If Pz+P4+Pc > P (and Pz+Pc≤P), makes the following judgment:
Judge whether the first battery 61 and the temperature of the second battery 62 are greater than 45 DEG C.It is then preferably electricity if it is greater than 45 DEG C Pond is cooling to provide cooling power, and compressor is run according to maximum refrigeration work consumption, while improving the revolving speed of pump 51, the cooling branch of battery Cooling power increase Pc, the cooling branch power of car reduces Pc.If P11 >=P21, and P11-P21=Pc1, then is controlled 58 aperture of regulating valve in one battery, 61 place circuit increases, so that the cooling power of the first battery 61 increases Pc1.If P12 >= P22, and P12-P22=Pc2, then 58 aperture of regulating valve for controlling 62 place circuit of the second battery increases, so that the second battery 62 Cooling power increase Pc2.If P11 < P12, and P21-P11=Pc1 then keep the cooling power of the first battery 61 constant, Or 58 aperture of regulating valve in control 61 place circuit of the first battery is reduced, so that the cooling power of the first battery 61 is reduced.Such as Fruit P12 < P22, and P22-P12=Pc2, then keep the cooling power of the second battery 62 constant, or control 62 institute of the second battery 58 aperture of regulating valve in circuit is reduced, so that the cooling power of the second battery 62 is reduced.
If battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably that interior offer is cold But power, compressor are run according to maximum refrigeration work consumption P, improve the revolving speed of pump 51, and the cooling power of the cooling branch of car is P4, The cooling power of the cooling branch of battery is equal to P-P4.The cooling branch of first battery 61 and the cooling branch of the second battery 62 are proportionally Reduce cooling power.Ratio can be with are as follows: (P-P4)/(P11+P12).The cooling power of first battery 61 be P11* (P-P4)/ (P11+P12), the cooling power of the second battery 62 is P12* (P-P4)/(P11+P12).
If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery, compressor is with maximum work Rate P operation, increases the aperture of the second expansion valve 42, improves 51 revolving speeds of pump, so that the cooling duplexure cooling power of battery increases Pc.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increases Greatly, so that the cooling power of the first battery 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2 then control the second battery 58 aperture of regulating valve at 62 places circuit increases, so that the cooling power of the second battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1 then keeps the cooling power of the first battery 61 constant, or the adjusting in control 61 place circuit of the first battery 58 aperture of valve is reduced, so that the cooling power of battery 61 is reduced.If P12 < P22, and P22-P12=Pc2, then keep second The cooling power of battery 62 is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that the second electricity The cooling power in pond 62 is reduced.
As Pz≤Pf, when the power for needing to adjust is Pc (Pc=Pf-Pz), then maintain compressor refrigeration power constant, Perhaps the refrigeration work consumption for reducing compressor perhaps reduces the aperture of the second expansion valve 42 or reduces the revolving speed of pump 51.If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increase, so that the first electricity The cooling power in pond 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2, then 62 place circuit of the second battery is controlled 58 aperture of regulating valve increases, so that the cooling power of battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1, then protect The cooling power for holding the first battery 61 is constant, or 58 aperture of regulating valve in control 61 place circuit of the first battery is reduced, so that The cooling power of first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2 then keep the cooling of the second battery 62 Power is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that the cooling function of the second battery 62 Rate is reduced.
When the compressor 1 for providing refrigeration work consumption for battery is multiple, the sum of the maximum refrigeration work consumption of multiple compressors For P5, then, battery cooling power is adjusted can be with are as follows:
(1) as Pz > Pf, the power for needing to adjust is Pc (Pc=Pz-Pf), if Pz+P4+Pc≤P5, compressor The refrigeration work consumption for needing to increase is Pc, increases the second expansion valve opening, improves revolution speed.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increases Greatly, so that the cooling power of the first battery 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2 then control the second battery 58 aperture of regulating valve at 62 places circuit increases, so that the cooling power of the second battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1 then keeps the cooling power of the first battery 61 constant, or the adjusting in control 61 place circuit of the first battery 58 aperture of valve is reduced, so that the cooling power of the first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2, then keep The cooling power of second battery 62 is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that electric The cooling power in pond 62 is reduced.
If Pz+P4+Pc > P5 (and Pz+Pc≤P5), makes the following judgment:
Judge whether battery temperature is greater than 45 DEG C.If it is greater than 45 DEG C, then being preferably that battery is cooling provides cooling power, pressure Contracting machine is run according to maximum refrigeration work consumption, while improving the revolving speed of water pump, and the cooling power of the cooling branch of battery increases Pc, interior Cooling branch power reduces Pc.
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increases Greatly, so that the cooling power of battery 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2, then 62 institute of the second battery is controlled 58 aperture of regulating valve in circuit increases, so that the cooling power of the second battery 62 increases Pc2.If P11 < P12, and P21- P11=Pc1 then keeps the cooling power of battery 61 constant, or 58 aperture of regulating valve in control 61 place circuit of the first battery It reduces, so that the cooling power of the first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2, then keep the second battery 62 cooling power is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that the second battery 62 Cooling power reduce.
If battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably that interior offer is cold But power, all compressors are run according to maximum refrigeration work consumption, improve pump rotary speed, and the cooling power of the cooling branch of car is P4, cooling power=P5-P4 of the cooling branch of battery.The cooling branch of first battery 61 and the cooling branch of the second battery 62 according to than Example reduces cooling power.Ratio can be with are as follows: (P5-P4)/(P11+P12).The cooling power of first battery 61 is P11* (P5-P4) / (P11+P12), the cooling power of the second battery 62 are P12* (P5-P4)/(P11+P12).
If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery, all compressors are with most High-power operation increases the second expansion valve opening, improves pump rotary speed, so that the cooling duplexure cooling power of battery increases Pc.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increases Greatly, so that the cooling power of the first battery 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2 then control the second battery 58 aperture of regulating valve at 62 places circuit increases, so that the cooling power of the second battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1 then keeps the cooling power of the first battery 61 constant, or the adjusting in control 61 place circuit of the first battery 58 aperture of valve is reduced, so that the cooling power of the first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2, then keep The cooling power of second battery 62 is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that electric The cooling power in pond 62 is reduced.
(2) as Pz≤Pf, when the power for needing to adjust is Pc (Pc=Pf-Pz), then maintain compressor refrigeration power constant, Perhaps the refrigeration work consumption for reducing compressor perhaps reduces the aperture of the second expansion valve 42 or reduces the revolving speed of pump 51.If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increase, so that the first electricity The cooling power in pond 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2, then 62 place circuit of the second battery is controlled 58 aperture of regulating valve increases, so that the cooling power of battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1, then Keep the cooling power of the first battery 61 constant, or 58 aperture of regulating valve in control 61 place circuit of the first battery is reduced, and is made The cooling power for obtaining the first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2 then keep the cooling of the second battery 62 Power is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that the cooling function of the second battery 62 Rate is reduced.
When the temperature of on-vehicle battery is less than second temperature threshold value (such as 0 DEG C), when the humidity control system work of on-vehicle battery The heating mode of work, if Pz > Pf, when the power for needing to adjust is Pc (Pc=Pz-Pf), the heating power of heater 53 increases Add Pc, improves the revolving speed of pump 51.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increases Greatly, so that the heating power of the first battery 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2 then control the second battery 58 aperture of regulating valve at 62 places circuit increases, so that the heating power of the second battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1 then keeps the heating power of the first battery 61 constant, or the adjusting in control 61 place circuit of the first battery 58 aperture of valve is reduced, so that the heating power of the first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2, then keep The cooling power of second battery 62 is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that the The heating power of two batteries 62 is reduced.
If Pz≤Pf, when the power for needing to adjust is Pc (Pc=Pz-Pf), the power of heater is remained unchanged, or Heating power Pc is reduced, or reduces revolution speed.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increases Greatly, so that the heating power in the first pond 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2, then the second battery 62 is controlled 58 aperture of regulating valve in place circuit increases, so that the heating power of the second battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1 then keeps the cooling power of the first battery 61 constant, or the adjusting in control 61 place circuit of the first battery 58 aperture of valve is reduced, so that the heating power of the first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2, then keep The cooling power of second battery 62 is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that electric The heating power in pond 62 is reduced.
To make the first battery 61 and the temperature of the second battery 62 keep in balance, can be handled as follows:
In carrying out battery cooling procedure, if between the temperature T61 of the first battery 61 and the temperature T62 of the second battery 62 Battery temperature difference be more than 3 DEG C, which is preset value, i.e., if 3 DEG C of T61-T62 >, battery thermal management controller 58 aperture of regulating valve controlled in the cooling branch of the first battery 61 increases, the regulating valve 58 in the cooling branch of the second battery 62 of control Aperture reduce, to increase the cooling power of the first battery 61, the cooling power of the second battery 62 reduction, to realize The temperature equalization of first battery 61 and the second battery 62.And if 3 DEG C of T62-T61 >, battery thermal management controller control the 58 aperture of regulating valve in the cooling branch of two batteries 62 increases, the aperture of the regulating valve 58 in the cooling branch of the first battery 61 of control It reduces, to increase the cooling power of the second battery 62, the cooling power of the first battery 61 is reduced, to realize the first electricity The temperature equalization in pond 61 and the second battery 62.
In carrying out battery heating process, the battery temperature difference such as between the first battery 61 and the second battery 62 is more than 3 DEG C, i.e., if 3 DEG C of T61-T62 >, 58 aperture of regulating valve in the cooling branch of battery thermal management controller control battery 61 subtracts Small, the aperture of the regulating valve 58 in the cooling branch of control battery 62 increases, to reduce the heating power of the first battery 61, The heating power of second battery 62 increases, to realize the temperature equalization of the first battery 61 and the second battery 62.If T62- 3 DEG C of T61 >, then 58 aperture of regulating valve in the cooling branch of battery thermal management controller control battery 62 reduces, and controls battery 61 The aperture of regulating valve 58 in cooling branch increases, to increase the heating power of the first battery 61, the second battery 62 Heating power reduces, to realize the temperature equalization of the first battery 61 and the second battery 62.
The humidity control system of on-vehicle battery according to an embodiment of the present invention is obtained more by battery temperature adjustment module The temperature regulatory demand power and temperature of the battery of a parallel connection adjust actual power, and respectively according to the temperature of the battery of multiple parallel connections Degree regulatory demand power and temperature adjust actual power and the temperature of the battery of multiple parallel connections are adjusted.The system can as a result, It is excessively high in battery temperature accurately to control the heating power and cooling power of each battery according to the virtual condition of each battery When or it is too low when temperature is adjusted, so that the temperature of battery is maintained preset range, avoid occur due to temperature influence vehicle The case where carrying battery performance.
Figure 10 is the flow chart of the temperature control method of the on-vehicle battery of the 6th embodiment according to the present invention.Wherein, vehicle Carry the battery that battery includes multiple parallel connections, as shown in Figure 10, the temperature control method of on-vehicle battery the following steps are included:
S1 obtains the temperature regulatory demand power P 1 of the battery of multiple parallel connections respectively.
Further, according to one embodiment of present invention, the temperature regulatory demand of the battery of multiple parallel connections is obtained respectively Power P 1 specifically includes: obtaining the first parameter when the opening temperature adjusting of each battery respectively, and is generated according to the first parameter First temperature regulatory demand power of each battery.Obtain respectively each battery temperature adjust when the second parameter, and according to Second parameter generates the second temperature regulatory demand power of each battery.According to the first temperature regulatory demand power of each battery Generate the temperature regulatory demand power P 1 of each battery respectively with the second temperature regulatory demand power of each battery.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature are generated each according to the first parameter First temperature regulatory demand power of battery specifically includes: obtaining the first temperature difference Δ between initial temperature and target temperature T1.According to the first temperature difference Δ T1The first temperature regulatory demand power P 1 is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of each battery within a preset time, The second temperature regulatory demand power of each battery is generated by following formula (2):
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
S2, the temperature for obtaining the battery of multiple parallel connections respectively adjust actual power P2.
According to one embodiment of present invention, the temperature adjusting actual power P2 for obtaining the battery of multiple parallel connections respectively is specific It include: to obtain for adjusting the inlet temperature and outlet temperature of the flow path of each battery temperature, and obtain coolant liquid and flow into flow path Flow velocity v.Second temperature difference Δ T is generated according to the inlet temperature and outlet temperature of the flow path of each battery2.According to each battery Second temperature difference Δ T2Temperature, which is generated, with flow velocity v adjusts actual power P2.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power P 2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is the cross of flow path Sectional area.
S3 adjusts actual power P2 to more according to the temperature regulatory demand power P 1 and temperature of the battery of multiple parallel connections respectively The temperature of the battery of a parallel connection is adjusted.
According to one embodiment of present invention, actual power P2 is adjusted to electricity according to temperature regulatory demand power P 1 and temperature Pond temperature adjustment module is controlled the temperature of institute's battery to be adjusted in object time t, to reach target temperature.
Specifically, after vehicle powers on, judge whether battery needs to carry out temperature adjusting, if it is determined that needing, then obtain respectively Initial temperature (i.e. Current Temperatures), target temperature and the object time t for reaching target temperature from initial temperature of each battery are taken, Wherein target temperature and object time t can be preset according to the actual situation, and calculated according to formula (1) and gone out the first temperature respectively Spend regulatory demand power.Meanwhile the average current I of each battery within a preset time is obtained respectively, and according to formula (2) point The second temperature regulatory demand power of each battery is not calculated.Then, respectively according to each the first temperature of battery regulatory demand function Rate and second temperature regulatory demand power calculate separately the temperature regulatory demand power P 1 of each battery (i.e. by the temperature of battery It is adjusted to the demand power of target temperature).Also, the inlet temperature and outlet temperature of each battery is obtained respectively, and obtains stream Flow rate information adjusts actual power P2 according to the temperature that formula (3) calculates separately out each battery.Finally, respectively according to each The P1 and P2 of battery carry out temperature adjusting to battery.The control method can be accurate according to the virtual condition of each battery as a result, The heating power and cooling power for controlling each battery, are adjusted temperature when battery temperature is excessively high or when too low, So that the temperature of battery is maintained preset range, avoid there is a situation where due to temperature influence on-vehicle battery performance.
Describe how to be adjusted according to the temperature regulatory demand power P 1 and temperature of battery combined with specific embodiments below practical The temperature of battery is adjusted in power P 2.
When on-vehicle battery includes the battery of multiple parallel connections, according to one embodiment of present invention, as shown in figure 8, respectively Actual power P2 is adjusted to battery temperature adjustment module according to the temperature regulatory demand power P 1 and temperature of the battery of multiple parallel connections Controlled the temperature regulatory demand power being adjusted with the temperature to battery to include: according to the battery of multiple parallel connections P1 generates total moisture content regulatory demand power P z.Judge whether total moisture content regulatory demand power P z freezes with the maximum of on-board air conditioner Power P matching.If it does, then according to the temperature regulatory demand power P 1 of the battery of multiple parallel connections be multiple parallel connections battery into Row cooling.If it does not match, according to the temperature regulatory demand power of the maximum refrigeration work consumption P of air-conditioning and the battery of multiple parallel connections P1 is that the battery of multiple parallel connections is cooled down.
Specifically, the total of entire humidity control system can be calculated according to the temperature regulatory demand power P 1 of each battery Total moisture content regulatory demand can be obtained in the addition of temperature regulatory demand power P 1 of each battery by temperature regulatory demand power P z Power P z.Then according to total moisture content regulatory demand power P z, judge whether Pz matches with the maximum refrigeration work consumption P of on-board air conditioner, Judge whether Pz is less than or equal to P, if it is, flowing into according to the temperature regulatory demand power P 1 of each battery by control The coolant rate of each battery and the power for controlling compressor cool down each battery.And if Pz and on-board air conditioner Maximum refrigeration work consumption P mismatch, i.e. Pz is greater than P, then controller is according to the temperature of maximum the refrigeration work consumption P and each battery of air-conditioning Regulatory demand power P 1 is spent, the coolant rate by adjusting each battery of inflow carries out coolant rate distribution in proportion, from And each battery can be made to complete cooling with maximal efficiency.
When the quantity of battery is multiple in parallel, according to one embodiment of present invention, the temperature control method of battery is also It may comprise steps of: the temperature of the battery of the multiple parallel connections of detection.When having at least one battery in the battery of multiple parallel connections When temperature is greater than the first temperature threshold, into refrigerating mode.When having the temperature of at least one battery small in the battery of multiple parallel connections When second temperature threshold value, into heating mode.Wherein, the first temperature threshold and second temperature threshold value can be according to the actual situation It is preset, for example, the first temperature threshold can be 40 DEG C, second temperature threshold value can be 0 DEG C.
Specifically, after vehicle powers on, the temperature of each battery of real-time detection, and judged.If wherein some battery Temperature be higher than 40 DEG C, illustrate that the temperature of the battery at this time is excessively high, to avoid high temperature from having an impact the performance of the battery, need Cooling processing is carried out to the battery, into refrigerating mode, concurrent power transmission pond refrigerating function starts information to air-conditioning system.
And if the temperature of some battery is lower than 0 DEG C, illustrate that the temperature of the battery at this time is too low, to avoid low temperature to the electricity The performance in pond has an impact, and needs to carry out heating treatment to the battery, into heating mode, controls the cooling branch of battery and closes, And heater unlatching is controlled, to provide heating power for battery.
To make the first battery and the temperature of the second battery keep in balance, can be handled as follows:
For example, as shown in figure 9, when battery includes the first battery and the second battery, battery cooling procedure is being carried out In, if the battery temperature difference between the temperature T61 of the first battery and the temperature T62 of the second battery is more than 3 DEG C, the temperature value For preset value, i.e., if 3 DEG C of T61-T62 >, battery thermal management controller controls the regulating valve in the cooling branch of the first battery Aperture increases, and the aperture of the regulating valve in the cooling branch of the second battery of control is reduced, to make the cooling power of the first battery Increase, the cooling power of the second battery is reduced, to realize the temperature equalization of the first battery and the second battery.
And if 3 DEG C of T62-T61 >, the control valve opening controlled in the cooling branch of the second battery increases, control first The aperture of regulating valve in the cooling branch of battery is reduced, to increase the cooling power of the second battery, the first battery it is cold But power is reduced, to realize the temperature equalization of the first battery and the second battery.
In carrying out battery heating process, the battery temperature difference such as between the first battery and the second battery is more than 3 DEG C, i.e., If 3 DEG C of T61-T62 >, the control valve opening that battery thermal management controller controls in the cooling branch of the first battery reduces, control The aperture for making the regulating valve in the cooling branch of the second battery increases, to increase the heating power of the first battery, the second electricity The heating power in pond is reduced, to realize the temperature equalization of the first battery and the second battery.If 3 DEG C of T62-T61 >, controlled Control valve opening in the cooling branch of second battery reduces, and the aperture of the regulating valve in the cooling branch of the first battery of control increases, To increase the heating power of the second battery, the heating power of the first battery is reduced, to realize the first battery and second The temperature equalization of battery.
According to one embodiment of present invention, when for refrigerating mode, respectively according to the temperature tune of the battery of multiple parallel connections Section demand power P1 and temperature adjust actual power P2 and the temperature of the battery of multiple parallel connections are adjusted, and specifically include: judgement Whether the temperature regulatory demand power P 1 of each battery, which is greater than the corresponding temperature of each battery, adjusts actual power P2.If some The temperature regulatory demand power P 1 of battery is greater than the corresponding temperature of battery and adjusts actual power P2, then obtains the temperature tune of the battery The difference power between demand power P1 and temperature adjusting actual power P2 is saved, and the pressure for cooling down battery is increased according to difference power The power of contracting machine, or the coolant rate for increasing battery is adjusted, to increase the cooling power of battery.If the temperature of some battery It spends regulatory demand power P 1 and is less than or equal to the corresponding temperature adjusting actual power P2 of battery, then reduce power or the guarantor of compressor The power for holding compressor is constant, or adjusts the coolant rate for reducing battery, to reduce the cooling power of battery.
Specifically, when working in refrigerating mode, the P1 and P2 of each battery are obtained respectively, and judged.If its In the P1 of some battery be greater than P2, illustrate if according to current refrigeration work consumption or coolant rate, can not be in target The interior cooling for completing the battery, so, the difference power between the P1 of the battery and P2 is obtained, and increase according to difference power and compress The power of machine 1, or increase the coolant rate of the battery, to increase the cooling power of the battery, wherein the function of P1 and P2 Rate difference is bigger, and the power of compressor and the coolant rate increase of the battery are more, so that the temperature of the battery is in preset time t Inside it is reduced to target temperature.And if wherein the P1 of some battery is less than or equal to P2, the power of compressor 1 can be kept not Become or suitably reduce the power of compressor, or reduce the coolant rate of the battery, reduces the cooling power of battery.When all When the temperature of battery is lower than 35 DEG C, then battery is cooling completes, and sends closing temperature regulatory function to on-board air conditioner by CAN communication Information, and control the cooling branch of battery and close.After if humidity control system enters the refrigerating mode long period, such as 1 small Shi Hou still has the temperature of battery to be higher than 35 DEG C, then suitably increases the cooling power of d battery, so that the battery is completed to cool down as early as possible.
According to one embodiment of present invention, when for heating mode, respectively according to the temperature tune of the battery of multiple parallel connections Section demand power P1 and temperature adjust actual power P2 and the temperature of the battery of multiple parallel connections are adjusted, and specifically include: judgement Whether the temperature regulatory demand power P 1 of each battery, which is greater than the corresponding temperature of each battery, adjusts actual power P2.If some The temperature regulatory demand power P 1 of battery is greater than the corresponding temperature of battery and adjusts actual power P2, then obtains the temperature tune of the battery The difference power between demand power P1 and temperature adjusting actual power P2 is saved, and is increased according to difference power for cooling down adding for battery The power of hot device, or the coolant rate for increasing battery is adjusted, to increase the heating power of battery.
Specifically, when for heating mode, the P1 and P2 of each battery are obtained respectively, and are judged.If wherein certain The P1 of one battery is greater than P2, illustrates if according to current heating power or coolant rate, can not be in object time t The interior heating for completing the battery, so, control obtains the difference power between the P1 and P2 of the battery, and is used for according to difference power increase The power of the heater of battery is heated, or adjusts the coolant rate for increasing battery, so that the battery can be in object time t Interior completion temperature is adjusted.Wherein, the difference of P1 and P2 is bigger, and the power of heater and the coolant rate of the cell circuit increase It is more.And if the P1 of some battery is less than or equal to P2, it can suitably reduce the power of heater, or keep heater Power is constant, or adjusts the coolant rate for reducing the cell circuit, to reduce the heating power of the battery.When all batteries Temperature be higher than preset temperature, such as at 10 DEG C, battery heating is completed, and sends closing temperature to on-board air conditioner by CAN communication The information of regulatory function, and control heater closing.After if humidity control system enters the heating mode long period, such as 1 After hour, still there is the temperature of battery lower than 10 DEG C, then suitably increase the power of heater and the revolving speed of pump again, so that the battery is most It is fast to complete heating.
According to one embodiment of present invention, if the temperature control method of on-vehicle battery can also include: some battery Temperature regulatory demand power P 1 be less than corresponding temperature adjust actual power P2, then reduce the revolving speed of pump；If some battery Temperature regulatory demand power P 1 be greater than corresponding temperature adjust actual power P2, then improve the revolving speed of pump.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of some battery is less than P2, the revolving speed for controlling pump reduces, to save electric energy.And if the P1 of some battery is greater than P2, except control heater, compressor Power increases or the coolant rate increase in battery place circuit is outer, and the revolving speed that can also control pump improves, to increase unit The coolant liquid quality of cooling flowing path cross section is flowed through in time, thus improve the battery temperature adjust actual power P2, with Realize that temperature is adjusted in object time t.
To make those skilled in the art be more clearly understood that the present invention, on-vehicle battery is described below with reference to specifically embodiment The temperature control method of system.
As shown in figure 9, battery may include the first battery and the second battery, Pz=P11+P12, P11 are the first battery Temperature regulatory demand power, P12 are the demand power that the second battery temperature is adjusted, and Pz is the temperature of the first battery and the second battery The sum of regulatory demand power (total moisture content regulatory demand power P z).Pf=P21+P22, P21 are that the temperature of battery adjusts practical function Rate, P22 are that the temperature of battery adjusts actual power, and Pf is the sum of temperature adjusting actual power of the first battery and the second battery.
When the temperature of some battery is greater than the first temperature threshold (such as 40 DEG C), the humidity control system work of on-vehicle battery Make in refrigerating mode, if total battery cooling requirement power P z and interior cooling requirement power P 4 and be less than compressor maximum system Cold power P, i.e. Pz+P4≤P then control compressor 1 and run according to Pz+P4 refrigeration work consumption.It is appreciated that Pz < in this case P, P4 < P.
If Pz+P4 > P, judge whether the temperature of the first battery or the second battery is greater than 45 DEG C, if it is greater than 45 DEG C, then being preferably that battery is cooling provides cooling power, and controller control compressor is run according to maximum refrigeration work consumption P, and battery is cold But the cooling power of branch is Pz, and the cooling power of the cooling branch of car is equal to P-Pz.
If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably that car mentions For cooling power, compressor is run according to maximum refrigeration work consumption P, and the cooling power of the cooling branch of car is P4, the cooling branch of battery The cooling power on road is equal to P-P4.The cooling branch of first battery and the cooling branch of the second battery proportionally reduce cooling power. Ratio can be with are as follows: (P-P4)/(P11+P12).If vehicle interior temperature has reached set temperature, preferentially meet the cooling of battery Power.
The temperature of first battery and the second battery adjust actual power and be Pf, when Pz > PF, the power for needing to adjust For Pc (Pc=Pz-Pf).If Pz+P4+Pc≤P, it is to increase the second expansion valve that compressor, which needs the refrigeration work consumption increased, Aperture, improve pump 51 revolving speed.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then the control valve opening in circuit increases where controlling the first battery, makes The cooling power for obtaining the first battery 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2, then the second battery place is controlled The control valve opening in circuit increases, so that the cooling power of the second battery increases Pc2.If P11 < P12, and P21-P11= Pc1 then keeps the cooling power of the first electricity constant, or the control valve opening in circuit is reduced where the first battery of control, so that The cooling power of first battery is reduced.If P12 < P22, and P22-P12=Pc2, then keep the cooling power of the second battery not Become, or 58 aperture of regulating valve in circuit is reduced where the second battery of control, so that the cooling power of the second battery is reduced.
If Pz+P4+Pc > P (and Pz+Pc≤P), makes the following judgment:
Judge whether the temperature of the first battery and the second battery is greater than 45 DEG C.It is then preferably that battery is cold if it is greater than 45 DEG C But cooling power is provided, compressor is run according to maximum refrigeration work consumption, while improving the revolving speed of pump, the cooling of the cooling branch of battery Power increases Pc, and the cooling branch power of car reduces Pc.If P11 >=P21, and P11-P21=Pc1 then control the first battery The control valve opening in place circuit increases, so that the cooling power of the first battery increases Pc1.If P12 >=P22, and P12- P22=Pc2, then the control valve opening in circuit increases where controlling the second battery, so that the cooling power of the second battery increases Pc2.If P11 < P12, and P21-P11=Pc1, then keep the cooling power of the first battery constant, or the first battery of control The control valve opening in place circuit is reduced, so that the cooling power of battery is reduced.If P12 < P22, and P22-P12=Pc2, Then keep the cooling power of the second battery constant, or the control valve opening in circuit is reduced where the second battery of control, so that the The cooling power of two batteries is reduced.
If battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably that interior offer is cold But power, compressor are run according to maximum refrigeration work consumption P, improve the revolving speed of pump, and the cooling power of the cooling branch of car is P4, electricity The cooling power of the cooling branch in pond is equal to P-P4.The cooling branch of first battery 61 and the cooling branch of the second battery 62 proportionally contract Small cooling power.Ratio can be with are as follows: (P-P4)/(P11+P12).The cooling power of first battery is P11* (P-P4)/(P11+ P12), the cooling power of the second battery is P12* (P-P4)/(P11+P12).
If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery, compressor is with maximum work Rate P operation, increases the aperture of the second expansion valve, improves the revolving speed of pump, so that the cooling duplexure cooling power of battery increases Pc.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then the control valve opening in circuit increases where controlling the first battery, makes The cooling power for obtaining the first battery increases Pc1.If P12 >=P22, and P12-P22=Pc2, then controls the second battery place and return The control valve opening on road increases, so that the cooling power of the second battery increases Pc2.If P11 < P12, and P21-P11=Pc1, Then keep the cooling power of the first battery constant, or the control valve opening in circuit is reduced where the first battery of control, so that electric The cooling power in pond is reduced.If P12 < P22, and P22-P12=Pc2, then keep the cooling power of the second battery constant, or The control valve opening in circuit is reduced where person controls the second battery, so that the cooling power of the second battery is reduced.
As Pz≤Pf, when the power for needing to adjust is Pc (Pc=Pf-Pz), then maintain compressor refrigeration power constant, Perhaps the refrigeration work consumption for reducing compressor perhaps reduces the aperture of the second expansion valve or reduces the revolving speed of pump.If P11 >= P21, and P11-P21=Pc1, then the control valve opening in circuit increases where controlling the first battery, so that the cooling of the first battery Power increases Pc1.If P12 >=P22, and P12-P22=Pc2, then 58 aperture of regulating valve in circuit where controlling the second battery Increase, so that the cooling power of battery increases Pc2.If P11 < P12, and P21-P11=Pc1 then keep the first battery 61 Cooling power it is constant, or control the first battery where circuit control valve opening reduce so that the cooling function of the first battery Rate is reduced.If P12 < P22, and P22-P12=Pc2, then keep the cooling power of the second battery constant, or control second The adjusting aperture in circuit is reduced where battery, so that the cooling power of the second battery is reduced.
When the temperature of on-vehicle battery is less than second temperature threshold value (such as 0 DEG C), the humidity control system of on-vehicle battery works Heating mode when, if Pz > Pf, when the power for needing to adjust is Pc (Pc=Pz-Pf), the heating power of heater increases Pc improves the revolving speed of pump.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then the control valve opening in circuit increases where controlling the first battery, makes The heating power for obtaining the first battery increases Pc1.If P12 >=P22, and P12-P22=Pc2, then controls the second battery place and return The control valve opening on road increases, so that the heating power of the second battery increases Pc2.If P11 < P12, and P21-P11=Pc1, Then keep the cooling power of the first battery constant, or the control valve opening in circuit is reduced where the first battery of control, so that the The heating power of one battery is reduced.If P12 < P22, and P22-P12=Pc2, then keep the cooling power of the second battery not Become, or the control valve opening in circuit is reduced where the second battery of control, so that the heating power of the second battery is reduced.
If Pz≤Pf, when the power for needing to adjust is Pc (Pc=Pz-Pf), the power of heater is remained unchanged, or Heating power Pc is reduced, or reduces revolution speed.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then the control valve opening in circuit increases where controlling the first battery, makes The heating power for obtaining the first pond increases Pc1.If P12 >=P22, and P12-P22=Pc2, then circuit where the second battery is controlled Control valve opening increase so that the second battery heating power increase Pc2.If P11 < P12, and P21-P11=Pc1, then Keep the heating power of the first battery constant, or the control valve opening in circuit is reduced where the first battery of control, so that first The heating power of battery is reduced.If P12 < P22, and P22-P12=Pc2, then keep the cooling power of the second battery constant, Or the control valve opening in circuit is reduced where the second battery of control, so that the heating power of battery is reduced.
According to one embodiment of present invention, the compressor for providing refrigerant for battery is multiple, the temperature of battery Adjusting method can also include: according to the temperature regulatory demand power P 1 of each battery and the maximum refrigeration work consumption of each compressor Judge the quantity of the compressor of starting.When for refrigerating mode, the compressor start of respective numbers is controlled.
Further, according to the maximum refrigeration work consumption P of the temperature regulatory demand power P 1 of each battery and each compressor Judge that the quantity of the compressor of starting specifically includes: total moisture content being generated according to the temperature regulatory demand power P 1 of each battery and is adjusted Actual power PZ；Judge total moisture content regulatory demand power PZWhether the maximum refrigeration work consumption P of single compressor is greater than；If it is greater than The maximum refrigeration work consumption P of single compressor, then control multiple compressors while starting.
Specifically, when compressor is multiple, correspondingly, interior cooling branch and the cooling branch of battery are multiple.Citing For, when the compressor for providing refrigerant for battery is 2, and the cooling branch of car and the cooling branch of battery are 2, in temperature Degree regulating system obtains the P1 of each battery when entering refrigerating mode respectively, and the P1 of each battery addition can be calculated whole The total moisture content regulatory demand power P of a humidity control systemZ.If PZLess than or equal to the maximum refrigeration work consumption P of single compressor, So control a compressor start.And if Pz is greater than the maximum refrigeration work consumption P of single compressor, control two Compressor starts work simultaneously, to meet the cooling refrigeration power demand of battery.
When the compressor for providing refrigerant for battery be it is multiple, the sum of the maximum refrigeration work consumption of multiple compressors is P5, then, battery cooling power is adjusted can be with are as follows:
(1) as Pz > Pf, the power for needing to adjust is Pc (Pc=Pz-Pf), if Pz+P4+Pc≤P5, compressor The refrigeration work consumption for needing to increase is Pc, increases the second expansion valve opening, improves revolution speed.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then the control valve opening in circuit increases where controlling the first battery, makes The cooling power for obtaining the first battery increases Pc1.If P12 >=P22, and P12-P22=Pc2, then controls the second battery place and return The control valve opening on road increases, so that the cooling power of the second battery increases Pc2.If P11 < P12, and P21-P11=Pc1, Then keep the cooling power of the first battery constant, or the control valve opening in circuit is reduced where the first battery of control, so that the The cooling power of one battery is reduced.If P12 < P22, and P22-P12=Pc2, then keep the cooling power of the second battery not Become, or the control valve opening in circuit is reduced where the second battery of control, so that the cooling power of battery is reduced.
If Pz+P4+Pc > P5 (and Pz+Pc≤P5), makes the following judgment:
Judge whether battery temperature is greater than 45 DEG C.If it is greater than 45 DEG C, then being preferably that battery is cooling provides cooling power, pressure Contracting machine is run according to maximum refrigeration work consumption, while improving the revolving speed of water pump, and the cooling power of the cooling branch of battery increases Pc, interior Cooling branch power reduces Pc.
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve in circuit increases where controlling the first battery, So that the cooling power of battery increases Pc1.If P12 >=P22, and P12-P22=Pc2, then circuit where the second battery is controlled Control valve opening increase so that the second battery cooling power increase Pc2.If P11 < P12, and P21-P11=Pc1, then Keep the cooling power of battery constant, or the control valve opening in circuit is reduced where the first battery of control, so that the first battery Cooling power reduce.If P12 < P22, and P22-P12=Pc2, then keep the cooling power of the second battery constant, or The control valve opening in circuit is reduced where controlling the second battery, so that the cooling power of the second battery is reduced.
If battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably that interior offer is cold But power, all compressors are run according to maximum refrigeration work consumption, improve pump rotary speed, and the cooling power of the cooling branch of car is P4, cooling power=P5-P4 of the cooling branch of battery.The cooling branch of first battery and the cooling branch of the second battery proportionally contract Small cooling power.Ratio can be with are as follows: (P5-P4)/(P11+P12).The cooling power of first battery 61 be P11* (P5-P4)/ (P11+P12), the cooling power of the second battery 62 is P12* (P5-P4)/(P11+P12).
If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery, all compressors are with most High-power operation increases the second expansion valve opening, improves pump rotary speed, so that the cooling duplexure cooling power of battery increases Pc.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve in circuit increases where controlling the first battery, So that the cooling power of the first battery increases Pc1.If P12 >=P22, and P12-P22=Pc2, then the second battery place is controlled The control valve opening in circuit increases, so that the cooling power of the second battery increases Pc2.If P11 < P12, and P21-P11= Pc1 then keeps the cooling power of the first battery constant, or 58 aperture of regulating valve in circuit is reduced where the first battery of control, So that the cooling power of the first battery is reduced.If P12 < P22, and P22-P12=Pc2 then keep the cooling function of the second battery Rate is constant, or the control valve opening in circuit is reduced where the second battery of control, so that the cooling power of battery is reduced.
(2) as Pz≤Pf, when the power for needing to adjust is Pc (Pc=Pf-Pz), then maintain compressor refrigeration power constant, Perhaps the refrigeration work consumption for reducing compressor perhaps reduces the aperture of the second expansion valve or reduces the revolving speed of pump.If P11 >= P21, and P11-P21=Pc1, then the control valve opening in circuit increases where controlling the first battery, so that the cooling of the first battery Power increases Pc1.If P12 >=P22, and P12-P22=Pc2, then the control valve opening in circuit increases where controlling the second battery Greatly, so that the cooling power of battery increases Pc2.If P11 < P12, and P21-P11=Pc1, then keep the cooling of the first battery Power is constant, or the control valve opening in circuit is reduced where the first battery of control, so that the cooling power of the first battery is reduced. If P12 < P22, and P22-P12=Pc2, then keep the cooling power of the second battery constant, or where the second battery of control The control valve opening in circuit is reduced, so that the cooling power of the second battery is reduced.
When the temperature of on-vehicle battery is less than second temperature threshold value (such as 0 DEG C), when the humidity control system work of on-vehicle battery The heating mode of work, if Pz > Pf, when the power for needing to adjust is Pc (Pc=Pz-Pf), the heating power of heater 53 increases Add Pc, improves the revolving speed of pump 51.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increases Greatly, so that the heating power of the first battery 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2 then control the second battery 58 aperture of regulating valve at 62 places circuit increases, so that the heating power of the second battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1 then keeps the heating power of the first battery 61 constant, or the adjusting in control 61 place circuit of the first battery 58 aperture of valve is reduced, so that the heating power of the first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2, then keep The cooling power of second battery 62 is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that the The heating power of two batteries 62 is reduced.
If Pz≤Pf, when the power for needing to adjust is Pc (Pc=Pz-Pf), the power of heater is remained unchanged, or Heating power Pc is reduced, or reduces revolution speed.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then 58 aperture of regulating valve for controlling 61 place circuit of the first battery increases Greatly, so that the heating power in the first pond 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2, then the second battery 62 is controlled 58 aperture of regulating valve in place circuit increases, so that the heating power of the second battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1 then keeps the cooling power of the first battery 61 constant, or the adjusting in control 61 place circuit of the first battery 58 aperture of valve is reduced, so that the heating power of the first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2, then keep The cooling power of second battery 62 is constant, or 58 aperture of regulating valve in control 62 place circuit of the second battery is reduced, so that electric The heating power in pond 62 is reduced.The temperature control method of on-vehicle battery according to an embodiment of the present invention, firstly, obtaining respectively multiple The temperature regulatory demand power of battery in parallel, then, the temperature for obtaining the battery of multiple parallel connections respectively adjust actual power, most Afterwards, actual power is adjusted to the battery of multiple parallel connections according to the temperature regulatory demand power of the battery of multiple parallel connections and temperature respectively Temperature be adjusted.This method can accurately control the heating of each battery according to the virtual condition of each battery as a result, Power and cooling power are adjusted temperature when battery temperature is excessively high or when too low, maintain the temperature of battery pre- If range, avoid there is a situation where due to temperature influence on-vehicle battery performance.
When the quantity of on-vehicle battery is multiple, and when being independently arranged between each battery, the present invention also proposes another kind vehicle Carry the humidity control system of battery.
Specifically, as shown in Figure 11 A, which includes: multiple compressors 1, multiple condensers 2, multiple The cooling branch 4 of battery and multiple battery temperature adjustment modules 5.
Wherein, multiple condensers 2 are connected with multiple compressors 1, and the cooling branch 4 of multiple batteries is connected to multiple compressors 1 It is interconnected between multiple condensers 2, and between the cooling branch 4 of multiple batteries.Battery temperature adjustment module 5 respectively with it is multiple Battery 6 is connected with the cooling branch 4 of multiple batteries, for obtaining the temperature regulatory demand power P 1 and temperature tune of multiple batteries respectively Actual power P2 is saved, and actual power P2 is adjusted according to temperature regulatory demand power P 1 and temperature, the temperature of battery is adjusted Section, and it is corresponding to battery 6 according to temperature regulatory demand power P 1 and the multiple compressors 1 of temperature adjusting actual power P2 adjusting The refrigerating capacity aperture that the cooling branch 4 of battery provides.
Further, according to one embodiment of present invention, it is adjusted according to temperature regulatory demand power and P1 and temperature real The temperature of battery is adjusted in border power P 2, specifically includes: adjusting practical function according to temperature regulatory demand power P 1 and temperature Rate P2 is adjusted the temperature of battery in object time t, to reach target temperature.
That is, battery temperature adjustment module 5 is adjusting actual power according to temperature regulatory demand power P 1 and temperature When P2 carries out temperature adjusting to each battery 6, it can be ensured that the virtual condition in object time t according to each battery 6 is accurate Control on-vehicle battery heating power and cooling power, thus on-vehicle battery when the temperature is excessively high or it is too low when to temperature carry out It adjusts.
As shown in Figure 11 A, by taking compressor 1, the cooling branch 4 of battery, 5 battery 6 of battery temperature adjustment module are 2 as an example, The cooling branch 4 of battery may include the cooling branch 401 of the first battery and the cooling branch 402 of the second battery, respectively correspond the first electricity Pond 61 and the second battery 62.
When the coolant liquid of air-conditioning is not linked into battery temperature adjustment module 5, there are two pipes for tool in the cooling branch 4 of battery Road, first pipe are connected with compressor 1, and second pipe is connected with battery temperature adjustment module 5, wherein first pipe with Second pipe is mutually independent to close on setting.By taking the cooling branch 401 of the first battery where the first battery 61 as an example, in the first electricity Pond 61 when the temperature is excessively high, on-board air conditioner refrigerating function open, battery refrigerating function starting, first pipe with it is cold in second pipe But the flow direction of liquid (such as refrigerant) is respectively as follows: the cooling 401-compressor of branch 1 of the 2-the first battery of 1-condenser of compressor； Cooling the 5-the first electricity of 401-battery temperature of branch adjustment module, 61-battery temperature of the 5-the first battery adjustment module of first battery Pond cools down branch 401.
It is appreciated that each battery temperature adjustment module 5 can be according to the temperature regulatory demand power and P1 of corresponding battery Actual power P2 is adjusted with temperature, the flow regulating cell of the coolant liquid of the cooling branch 4 of corresponding battery is flowed by adjusting Refrigeration work consumption/heating power, so as to ensure the temperature in object time t according to the virtual condition of each battery to battery Degree is adjusted.Simultaneously as being interconnected between the cooling branch 4 of multiple batteries, therefore battery temperature adjustment module 5 can root According to the temperature of each battery, pass through the refrigerating capacity aperture of the cooling branch 4 of the corresponding battery of regulating cell, it is ensured that each battery Between temperature equilibrium.Thus, it is possible to on-vehicle battery when the temperature is excessively high or it is too low when within the object time to temperature carry out Adjust, so that the temperature of on-vehicle battery is maintained preset range, avoid occur due to temperature influence on-vehicle battery performance, and It can guarantee the equilibrium of temperature between each battery.
According to one embodiment of present invention, as shown in Figure 11 A, the cooling branch 4 of battery may include heat exchanger 41, heat exchange Device 41 includes first pipe and second pipe, and second pipe is connected with battery temperature adjustment module 5, first pipe and compressor 1 Be connected, wherein first pipe with second pipe is mutually independent closes on setting.
Battery temperature adjustment module 5 may include the flow path (not specifically illustrated in figure) of regulating cell temperature, flow path setting Among battery 6.Pump 51, media Containers 52, heater 53 and the controller (figure being connected between flow path and heat exchanger 41 In it is not specifically illustrated).Wherein, controller obtains the temperature regulatory demand power P 1 of multiple batteries 6 and the temperature of battery is adjusted in fact Border power P 2, and actual power P2 is adjusted to the temperature of battery 6 according to the temperature regulatory demand power P 1 and temperature of each battery It is adjusted.The cooling branch 4 of battery can also include the second expansion valve 42 and the second electronic valve 43.
As shown in figure 11, the cooling branch 401 of the first battery can also include the first regulating valve 411 and third regulating valve 413； The cooling branch 402 of second battery can also include the second regulating valve 412 and the 4th regulating valve 414, the connection type of each regulating valve It specifically can refer to Figure 11 A, be not repeated herein.
As shown in Figure 11 A, compressor 11 controls flow to 401 respectively by the first regulating valve 411 and the second regulating valve 412 The cold medium flux on road and 402 branches.Compressor 12 adjusts 413 valves by third and the 4th regulating valve 414 controls flow respectively The cold medium flux of 401 branches and 402 branches.The cooling power and the first regulating valve 411 and third of the cooling branch 401 of battery are adjusted The cold medium flux of valve 413 is related.The cooling power and the second regulating valve 412 of the cooling branch 402 of battery and the 4th regulating valve 414 Cold medium flux is related.
It is understood that the cooling branch 4 of battery can also be not provided with heat exchanger 41, when not having heat exchanger 41, battery What is flowed in cooling branch 4 is exactly refrigerant.If heat exchanger 41 is arranged, what is flowed in first pipe in the cooling branch 4 of battery is Refrigerant, what is flowed in second pipe is coolant liquid.
An embodiment according to the present invention, as shown in Figure 11 A, battery temperature adjustment module 5 can also include setting In the first temperature sensor 55 of the entrance of flow path, the second temperature sensor 56 and flow velocity that the outlet of flow path is arranged in are passed Sensor 57.It is appreciated that the entrance and exit position of flow path is not absolute, determining according to the steering of pump 51.
Specifically, heat exchanger 41 can be plate heat exchanger, and plate heat exchanger may be mounted inside on-board air conditioner, so that Entire refrigerant circuit convenient for on-board air conditioner factory debugging, and supplies that on-board air conditioner individually inside on-board air conditioner Goods and assembling, meanwhile, on-board air conditioner only needs to fill primary coolant during the installation process.Coolant liquid is flowed into from the entrance of flow path The inside of battery 6 is flowed out from the outlet of flow path, to realize the heat exchange between battery 6 and coolant liquid.
Pump 51 is mainly used for providing power, and media Containers 52 are mainly used for storing coolant liquid and receive to humidity control system The coolant liquid of addition, when the coolant liquid in humidity control system is reduced, the coolant liquid in media Containers 52 can be automatically replenished.Add Hot device 53 can be ptc heater, can with controller carry out CAN communication, for on-vehicle battery humidity control system provide add Thermal power is controlled by the controller.And heater 53 is not direct contacts with battery 6, safety with higher, reliability and practical Property.
Temperature of first temperature sensor 55 to detect path inlet coolant liquid, second temperature sensor 56 is to detect The temperature of flowing path outlet coolant liquid.Flow rate information of the flow sensor 57 to detect coolant liquid in corresponding pipeline.Second electronics For valve 43 to control opening and closing for the cooling branch 4 of corresponding battery, the second expansion valve 42 can be used for the battery of control response Coolant rate in cooling branch 4.Controller can be by the aperture of first to fourth regulating valve 411-414 of adjusting, simultaneously The coolant rate of the first battery 61 and 62 two, the second battery cooling duplexures is controlled, to make the temperature of balanced two batteries Degree.Controller can also carry out CAN communication with on-board air conditioner and heater 53 simultaneously, and can control revolving speed and the monitoring of pump 51 The temperature and flow information of coolant liquid can also be managed battery 6, detect the voltage and temperature information of battery 6, control vehicle Carry the on-off of the humidity control system of battery.
The temperature tune how each battery temperature adjustment module 5 obtains respective battery 6 is described combined with specific embodiments below It saves demand power P1 and temperature adjusts actual power P2.
According to one embodiment of present invention, controller can be used for obtaining respectively when each battery opening temperature is adjusted First parameter, and the first temperature regulatory demand power of each battery is generated according to the first parameter, and obtain each electricity respectively Second parameter of the pond when temperature is adjusted, and the second temperature regulatory demand power of each battery is generated according to the second parameter, and Each electricity is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of each battery and each battery The temperature regulatory demand power P 1 in pond.
Further, according to one embodiment of present invention, the first parameter is initial temperature when 6 opening temperature of battery is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature, controller obtain initial temperature and target temperature The first temperature difference Δ T between degree1, and according to the first temperature difference Δ T1The first temperature regulatory demand function is generated with object time t Rate.
Further, controller generates the first temperature regulatory demand power by following formula (1):
ΔT1* (1) C*M/t,
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is battery 6 Specific heat capacity, M are the quality of battery 6.
Second parameter is the average current I of each battery 6 within a preset time, and controller is generated by following formula (2) Second temperature regulatory demand power:
I2* R, (2),
Wherein, I is average current, and R is the internal resistance of battery 6.
When being cooled down to battery 6, P1=Δ T1*C*M/t+I2*R；When being heated to battery 6, P1=Δ T1* C*M/t-I2*R。
According to one embodiment of present invention, controller is respectively according to first temperature sensing in each 6 place circuit of battery The outlet temperature that the inlet temperature and second temperature sensor 56 that device 55 detects detect generates the second temperature difference Δ of each battery T2, and according to the second temperature difference Δ T of each battery2The flow velocity v detected with flow sensor 57 generates the temperature tune of each battery Save actual power P2.
Further, according to one embodiment of present invention, the practical function of temperature adjusting is generated according to by following formula (3) Rate P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is the cross of flow path Sectional area.
Specifically, after vehicle powers on, controller judges whether vehicle needs to carry out temperature adjusting, if it is determined that vehicle needs Temperature is adjusted, then opening temperature regulatory function, and sends slow-speed of revolution information to pump 51, and pump is to default revolving speed (such as slow-speed of revolution) beginning Work.Then, controller obtains the initial temperature (i.e. Current Temperatures) of each battery 6, target temperature and reaches from initial temperature The object time t of target temperature, wherein target temperature and object time t can be preset according to the actual situation, and according to public affairs Formula (1) calculates the first temperature regulatory demand power of each battery.Meanwhile controller obtains each battery 6 default respectively Average current I in time, and each battery second temperature regulatory demand power is calculated according to formula (2).Then, controller point Not according to the first temperature regulatory demand power of each battery 6 and second temperature regulatory demand power calculation temperature regulatory demand function The temperature of battery 6 (is adjusted to the demand power of target temperature) by rate P1 within the object time.Also, controller obtains respectively The first temperature sensor 55 and second temperature sensor 56 that each battery is correspondingly arranged detect temperature information, and obtain stream respectively The flow rate information that fast sensor 57 detects adjusts actual power P2 according to the temperature that formula (3) calculates separately out each battery 6. Finally, controller can adjust actual power P2 according to the temperature regulatory demand power and P1 and temperature of corresponding battery, pass through tune Section is flowed into the refrigeration work consumption of the flow regulating cell of the coolant liquid of the cooling branch 4 of corresponding battery, or by adjusting heating The adjusting heating power of device, so as to ensure the temperature in object time t according to the virtual condition of each battery to battery Degree is adjusted.
It how describes below in conjunction with specifically embodiment according to 1 He of temperature regulatory demand power P according to each battery 6 Temperature adjusts actual power P2 and the temperature of each battery 6 is adjusted.
According to one embodiment of present invention, controller can be used for the temperature regulatory demand power P 1 according to each battery Generate total moisture content regulatory demand power P z, and according to the maximum refrigeration work consumption P of multiple compressors generate multiple compressors it is total most Big refrigeration work consumption P5, and judge total moisture content regulatory demand power PZWhether the total maximum refrigeration work consumption of multiple compressors is greater than P5, wherein when total moisture content regulatory demand power PZGreater than multiple compressors total maximum refrigeration work consumption P5 when, controller will be multiple Compressor 1 is adjusted to the refrigerating capacity aperture of the cooling branch 4 of the corresponding battery of battery to maximum；When total moisture content regulatory demand power When Pz is less than or equal to total maximum refrigeration work consumption P5 of multiple compressors, controller is according to total moisture content regulatory demand power P z and always The difference of maximum refrigeration work consumption P5 is adjusted the refrigerating capacity aperture of the cooling branch 4 of the corresponding battery of battery 6.
Specifically, as shown in Figure 11 A, when cooling down to battery, controller can be according to the temperature tune of each battery Section demand power P1 calculates the total moisture content regulatory demand power P z of entire humidity control system, i.e., by the temperature tune of each battery Total moisture content regulatory demand power P z can be obtained in section demand power P1 addition, while controller is according to the maximum of each compressor 1 Refrigeration work consumption P calculates total maximum refrigeration work consumption P5 of multiple compressors, i.e., by the maximum refrigeration work consumption P phase of each compressor 1 Add and total maximum refrigeration work consumption P5 can be obtained.Then, controller judges whether Pz > P5, if it is, controller control will be every The aperture regulation of a second expansion valve 42 is flowed into each battery to maximum to increase；The coolant rate of cooling circuit 4, makes Battery can complete cooling within the object time.And if Pz≤P5, controller is according to the difference between Pz and P5 to each The aperture of second expansion valve 42 is adjusted, wherein the absolute value of Pz and P5 difference is bigger, and the aperture of the second expansion valve 42 is got over It is small, it is energy saving to achieve the purpose that.
According to one embodiment of present invention, controller is also used to, and is also used to detect the temperature of multiple batteries, and multiple When the temperature of any of battery 6 battery is greater than the first temperature threshold, control humidity control system enters refrigerating mode, Yi Ji When the temperature of any of multiple batteries battery is less than second temperature threshold value, control humidity control system enters heating mode.Its In, the first temperature threshold and second temperature threshold value can be preset according to the actual situation, for example, the first temperature threshold can be 40 DEG C, second temperature threshold value can be 0 DEG C.
Specifically, after vehicle powers on, controller distinguishes the temperature of each battery 6 of real-time detection, and is judged.If its In some battery 6 temperature be higher than 40 DEG C, illustrate that the temperature of the battery 6 at this time is excessively high, to avoid high temperature to the performance of the battery 6 It has an impact, needs to carry out the battery 6 cooling processing, controller control humidity control system enters refrigerating mode, and sends Battery refrigerating function starts information and opens to air-conditioning system, and corresponding second electronic valve 43 of control, so that coolant liquid and electricity Pond 6 carries out heat exchange to reduce the temperature of the battery 6.
And if the temperature of some battery 6 is lower than 0 DEG C, illustrate that the temperature of the battery 6 at this time is too low, to avoid low temperature to this The performance of battery 6 has an impact, and needs to carry out the battery 6 heating treatment, and controller control humidity control system enters heating Mode, the second electronic valve 43 of control are closed, and are controlled corresponding heater 53 and opened, to provide heating function for humidity control system Rate.When humidity control system work is in heating mode, heater 53 provides heating power, for heating the first battery 61, First battery 61 coolant liquid in the loop flow direction are as follows: 52-heat exchanger of media Containers, 41-heater 53 (is opened Open)-51-the first 56-flow sensor of temperature sensor 61-second temperature sensor of the 55-the first battery of pump 57-Jie Matter container 52 so recycles, and realizes the heating of the first battery of battery 61.
According to one embodiment of present invention, when for refrigerating mode, temperature regulatory demand of the controller in some battery When the temperature corresponding greater than battery of power P 1 adjusts actual power P2, the temperature regulatory demand power P 1 and temperature of the battery are obtained Degree adjusts the difference power between actual power P2, and increases the power for cooling down the compressor 1 of battery according to difference power, or The coolant rate for increasing the cooling branch 4 of the corresponding battery of battery 6 is adjusted, to increase the cooling power of battery, and at some When the temperature regulatory demand power P 1 of battery temperature corresponding less than or equal to battery adjusts actual power P2, reduce compressor Power keeps the power of compressor constant, or adjusts the coolant rate for reducing the cooling branch 4 of the corresponding battery of battery 6, To reduce the cooling power of battery.
Specifically, when work is in refrigerating mode, controller obtains the P1 and P2 of each battery 6 respectively, and is judged. If wherein the P1 of some battery 6 is greater than P2, illustrate if according to current refrigeration work consumption or coolant rate, Wu Fa The cooling of the battery 6 is completed in object time, so, controller obtains the difference power between the P1 of the battery and P2, and according to Difference power increases for cooling down the power of the compressor 1 of the battery, or the cooling branch 4 of battery where increasing the battery is cold But flow quantity, to increase the cooling power of the battery, wherein the difference power of P1 and P2 is bigger, the power of corresponding compressor 1 and The coolant rate increase of the battery is more, so that the temperature of the battery is reduced to target temperature in preset time t.And if its In some battery 6 P1 be less than or equal to P2, the power of the compressor 1 for cooling down the battery can be kept constant or appropriate Reduce the power of compressor 1, or reduce the coolant rate of the battery cooling branch 4 where the battery, reduces the cold of battery But power.When the temperature of all batteries 6 is lower than 35 DEG C, then battery 6 is cooling completes, and controller passes through CAN communication to vehicle-mounted sky The information for sending closing temperature regulatory function is readjusted the distribution, and controls the second all electronic valves 43 and closes.If humidity control system into After entering the refrigerating mode long period, such as after 1 hour, still there is the temperature of battery 6 to be higher than 35 DEG C, then controller suitably increases accordingly Compressor 1 power or pump revolving speed so that the battery is completed to cool down as early as possible.
According to one embodiment of present invention, when for heating mode, temperature regulatory demand of the controller in some battery When power P 1 is greater than temperature adjusting actual power P2, the temperature regulatory demand power P 1 and temperature for obtaining the battery adjust practical Difference power between power P 2, and the power for heating the heater 53 of battery is increased according to difference power, to increase battery Heating power, and when the temperature regulatory demand power P 1 of some battery is less than or equal to temperature adjusting actual power P2, subtract The power of small heater 53, or keep the power of heater 53 constant.
Specifically, when for heating mode, controller obtains the P1 and P2 of each battery 6 respectively, and is judged.If Wherein the P1 of some battery 6 is greater than P2, illustrates if according to current heating power or coolant rate, can not be in target The heating of the battery 6 is completed in time, so, controller obtains the difference power between the P1 of the battery and P2, and according to power Difference increases the power for heating the heater 53 of battery 6, so that the battery can complete temperature adjusting within the object time.Its In, the difference of P1 and P2 are bigger, and the power of heater 53 is increased more.And if the P1 of some battery is less than or equal to P2, Controller can suitably reduce the power of heater 53, to save electric energy, or keep the power of heater 53 constant.When all The temperature of battery 6 is higher than preset temperature, such as at 10 DEG C, and the heating of battery 6 is completed, and controller controls heater 53 and closes.If After humidity control system enters the heating mode long period, such as after 1 hour, still there is the temperature of battery 6 lower than 10 DEG C, then control Device suitably increases the power of heater 53 again, so that the battery is completed to heat up as early as possible.
For example, as shown in Figure 11 A, since the heating function of the first battery 61 and the second battery 62 is mutually indepedent, the One battery 61 and the second battery 62 are heated with a heater respectively, so only illustrating that battery adds by taking the first battery 61 as an example The power regulation of heat function.(assuming that P11 is the temperature regulatory demand power of the first battery 61, P21 is the temperature of the first battery 61 The difference power of degree adjusting actual power, P11 and P21 are P31)
If P11 > P21, when the power for needing to adjust is P31 (P31=P11-P21), the heating power of heater 53 increases Add P31, and improves the revolving speed of pump 51.
If P11≤P21, when the power for needing to adjust is P31 (P31=P11-P21), the power of heater 53 is kept not Become, the power of heater 53 is perhaps reduced into P31 or reduces the revolving speed of pump 51.
According to one embodiment of present invention, controller is also used to small in the temperature regulatory demand power P 1 of some battery When corresponding temperature adjusts actual power P2, the revolving speed of pump 51 is reduced, and in the temperature regulatory demand power P 1 of some battery When adjusting actual power P2 greater than corresponding temperature, the revolving speed of pump 51 is improved.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of some battery 6 is less than The revolving speed of P2, the corresponding pump 51 of controller control reduce, to save electric energy.And if the P1 of some battery 6 is greater than P2, controller In addition to the power for controlling corresponding heater 53 or compressor 1 increases or the coolant rate in battery place circuit increases, also The revolving speed of control pump 51 improves, and can increase the coolant liquid quality that cooling flowing path cross section is flowed through in the unit time, to improve The temperature of the battery adjusts actual power P2, to realize that temperature is adjusted in object time t.
According to one embodiment of present invention, if the compressor 1 for providing refrigerant for battery is multiple, controller It is also used to the pressure of the maximum refrigeration work consumption P judgement starting of the temperature regulatory demand power P 1 and each compressor according to each battery The quantity of contracting machine, and when humidity control system is refrigerating mode, the compressor 1 for controlling respective numbers starts.
Further, controller can generate total moisture content regulatory demand according to the temperature regulatory demand power P 1 of each battery Power P z, controller is when judging that total moisture content regulatory demand power P z is greater than the maximum refrigeration work consumption P of single compressor, control Multiple compressors 1 start simultaneously.
Specifically, as shown in Figure 11 A, by taking compressor 1 is two as an example, when humidity control system enters refrigerating mode, Controller obtains the P1 of each battery 6 respectively, the temperature of each battery adjusts actual power P2 and the maximum system of single compressor Cold power P, and the P1 of each battery is added to the total moisture content regulatory demand power P z that can calculate entire humidity control system, it will The temperature of each battery adjusts actual power P2 and is added to obtain total moisture content adjusting actual power Pf, and the maximum of each compressor is made Cold power addition can calculate the sum of the maximum refrigeration work consumption of all compressors P5.Wherein, the temperature of the first battery 61, which is adjusted, needs Seeking power is P11, and the temperature regulatory demand power of the second battery 62 is P12.The temperature of first battery 61 adjusts actual power P21, it is P22 that the temperature of the second battery 62, which adjusts actual power,.The maximum refrigeration work consumption P of each compressor is equal.
If Pz≤P, only needs to control a compressor 1 and work, refrigeration work consumption is provided, also can control two pressures Contracting machine 1 works together.If P < Pz≤P5 needs two compressors 1 to work together, the initial refrigeration function of each compressor Rate is Pz/2.If Pz≤P5, control compressor 1 runs according to Pz refrigeration work consumption, and is adjusted by adjusting first to fourth The aperture of valve cools down the initial cooling power of the cooling branch 401 of the first battery according to P11 refrigeration work consumption, the second battery Cooling 402 initial cooling power of branch is cooled down according to P21 refrigeration work consumption.If Pz > P5, each compressor is according to most Big refrigeration work consumption P operation, and the initial cooling power of the cooling branch 401 of the first battery can be according to P5* [P11/ (P11+ P12)] refrigeration work consumption is cooled down, and the initial cooling power of the cooling branch 402 of the second battery can be according to P5* [P12/ (P11+ P12)] refrigeration work consumption is cooled down.
According to one embodiment of present invention, controller is also used to, temperature when for refrigerating mode, between battery 6 When difference is more than setting value, increase the cooling power of the higher battery 6 of temperature, so as to reduce the temperature difference between battery 6；For plus When heat pattern, when the temperature difference between battery is more than setting value, increase the heating power of the lower battery 6 of temperature.
It is appreciated that as shown in Figure 11 A, controller can be counted respectively when humidity control system work is in refrigerating mode The temperature regulatory demand power P 1 for calculating the first battery 61 and the second battery 62, then respectively according to the P1 of each battery and compression The maximum refrigeration work consumption P of machine adjusts the aperture of corresponding second expansion valve 42.In cooling procedure, controller is respectively according to each The temperature of battery adjusts actual power P2 and continues to adjust the aperture of the second expansion valve 42.Meanwhile controller is according to the first battery 61 And the second temperature conditions between battery 62, pass through the aperture for adjusting first to fourth regulating valve 411-414, adjusts the first battery The coolant rate distribution of cooling branch 401 and the cooling branch 402 of the second battery, to reach the first battery 61 and second of control The equilibrium of 62 temperature of battery.Wherein, when the temperature of the first battery 61 is higher than the temperature of the second battery 62 and difference is more than setting value When, it is possible to increase the aperture of the first regulating valve 411 and third regulating valve 413 reduces the second regulating valve 412 and the 4th regulating valve 414 Aperture, with increase the first battery 61 cooling power；When the temperature of the first battery 61 and the second battery 62 is equal, if two The cooling power of the offer of a compressor 1 is equal, can control the aperture of first to fourth regulating valve 411-414 identical；And if The cooling power that two compressors 1 provide is unequal, then can control 412 aperture of the first regulating valve 411 and the second regulating valve It is equal, and control third regulating valve 413 and 414 aperture of the 4th regulating valve are equal.And when humidity control system works in heated mould When formula, when the temperature of the first battery 61 is lower than the temperature of the second battery 62 and difference is more than setting value, then controller increases the The heating power of the corresponding heater 53 of one battery 61.Thus, it is possible to keep the temperature equalization between two batteries.According to this hair The humidity control system of bright one embodiment, on-vehicle battery can be shown in Figure 11 B and Figure 11 C.Wherein, Figure 11 B is multiple Compressor (i.e. the first compressor 11 and the second compressor 12 in Figure 11 B) is in parallel and shares an expansion valve, and each battery is cold But branch increases regulating valve (i.e. the first regulating valve 411 and the second regulating valve 412), cold by adjusting each battery of valve regulation inflow But the coolant rate of branch, to adjust the cooling power of each battery.Figure 11 C is multiple compressors (i.e. first in Figure 11 C Compressor 11 and the second compressor 12) it is in parallel and share a condenser 2, it is swollen to be both provided with second in the cooling branch of each battery Swollen valve 42 and electronic valve (, the aperture regulation by adjusting the second expansion valve 42 flows into the cooling liquid stream of the cooling branch of each battery Amount controls the opening and closing of the cooling branch of each battery by electronic valve to adjust the cooling power of each battery.
The temperature adjustment process of system shown in Figure 11 C is described below with reference to specifically embodiment.
As shown in Figure 11 C, battery may include the first battery and the second battery, and Pz=P11+P12, P11 are the first battery Temperature regulatory demand power, P12 be the second battery temperature adjust demand power, Pz be the first battery and the second battery temperature Spend the sum of regulatory demand power (total moisture content regulatory demand power P z).Pf=P21+P22, P21 are that the temperature of battery adjusts reality Power, P22 are that the temperature of battery adjusts actual power, Pf be the first battery and the second battery temperature adjust actual power it With.P is compressor maximum refrigeration work consumption, and P5 is the sum of the maximum refrigeration work consumption of all compressors, P5=2*P.
Compressor horsepower original allocation:
If Pz≤P, a compressor operating is only needed, refrigeration work consumption or two compressors work together are provided Make；If P < Pz≤P5 needs two compressors to work together, the initial refrigeration work consumption of each compressor is Pz/2；If Pz > P5 then needs two compressors to work together, and each compressor is run according to maximum refrigeration work consumption P.
As Pz≤P5, compressor is run according to Pz refrigeration work consumption, and the cooling branch initial cooling power of the first battery 61 is pressed It is cooled down according to P11 refrigeration work consumption；The cooling branch initial cooling power of second battery 62 is cooled down according to P21 refrigeration work consumption. As Pz > P5, then each compressor is run according to maximum refrigeration work consumption P.The cooling branch initial cooling power of first battery 61 is pressed It is cooled down according to P5* [P11/ (P11+P12)] refrigeration work consumption；The cooling branch initial cooling power of second battery 62 is according to P5* [P12/ (P11+P12)] refrigeration work consumption is cooled down.
During cooling to battery, the cooling power of battery need to be adjusted, specific as follows:
As Pz > Pf, the power for needing to adjust is Pc (Pc=Pz-Pf).If Pz+Pc≤P5, compressor needs to increase Refrigeration work consumption be Pc,.It is handled as follows simultaneously:
If P11 >=P21, and P11-P21=Pc1, then the expansion valve opening for controlling 61 place circuit of the first battery increases, And the revolving speed of the pump in circuit where controlling improves, so that the cooling power of the first battery 61 increases Pc1.If P12 >=P22, and P12-P22=Pc2, the then expansion valve opening for controlling 62 place circuit of the second battery increase, and control turn of the pump in place circuit Speed improves, so that the cooling power of the second battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1, then keep first The cooling power of battery 61 is constant, or 8 aperture of expansion valve in control 61 place circuit of the first battery is reduced, and is returned where controlling The revolving speed of the pump on road reduces, so that the cooling power of the first battery 61 is reduced.If P12 < P22, and P22-P12=Pc2, then Keep the cooling power of the second battery 62 constant, or the expansion valve opening in control 62 place circuit of the second battery is reduced, and is controlled The revolving speed of the pump in circuit reduces where system, so that the cooling power of the second battery 62 is reduced.
If P5 Pz+Pc > P5, each compressor are run according to maximum refrigeration work consumption P, pump rotary speed is improved.While into The following processing of row:
The expansion valve opening of cooling branch where controlling the first battery 61, so that the first battery 61 cools down branch cooling power It is cooled down according to P5* [P11/ (P11+P12)] refrigeration work consumption；The expansion valve of cooling branch is opened where controlling the second battery 62 Degree, so that the cooling branch cooling power of the second battery 62 is cooled down according to P5* [P12/ (P11+P12)] refrigeration work consumption.
As Pz≤Pf, when the power for needing to adjust is Pc (Pc=Pf-Pz), then maintain compressor refrigeration power constant, Or the refrigeration work consumption of compressor is reduced, it is handled as follows simultaneously.If P11 >=P21, and P11-P21=Pc1, then control The expansion valve opening in 61 place circuit of the first battery increases, and the revolving speed for controlling the pump in place circuit improves, so that the first battery 61 cooling power increases Pc1.If P12 >=P22, and P12-P22=Pc2, then the swollen of 62 place circuit of the second battery is controlled Swollen valve opening increases, and the revolving speed for controlling the pump in place circuit improves, so that the cooling power of battery 62 increases Pc2.If P11 < P12, and P21-P11=Pc1 then keep the cooling power of the first battery 61 constant, or return where the first battery 61 of control The expansion valve opening on road is reduced, and the revolving speed for controlling the pump in place circuit reduces, so that the cooling power of the first battery 61 is reduced. If P12 < P22, and P22-P12=Pc2 then keep the cooling power of the second battery 62 constant, or the second battery 62 of control The expansion valve opening in place circuit is reduced, and the revolving speed for controlling the pump in place circuit reduces, so that the cooling function of the second battery 62 Rate is reduced.
Heating power adjustment:
Since the heating function of the first battery 61 and the second battery 62 is mutually indepedent, the first battery 61 and the second battery 62 divide The demand for heat power of the first battery 61 is not carried out with a heater, P21 is the practical heating power of the second battery 61, power Difference is P31) if P11 > P21, the power for needing to adjust is P31 (P31=P11-P21), and the heating power of heater increases P31, and improve the revolving speed of pump.If P11≤P21, when the power for needing to adjust is P31 (P31=P11-P21), heater Power remains unchanged, and perhaps reduces heating power P31 or reduces the revolving speed of pump.
Battery temperature is balanced:
In carrying out battery cooling procedure, if between the temperature T61 of the first battery 61 and the temperature T62 of the second battery 62 Battery temperature difference be more than 3 DEG C, which is preset value, i.e., if 3 DEG C of T61-T62 >, battery thermal management controller The aperture for controlling the second expansion valve 42 in the cooling branch of the first battery 61 increases, or controls branch where the first battery 61 simultaneously The revolving speed pumped in road improves, and the aperture of the second expansion valve 42 in the cooling branch of the second battery 62 of control reduces or same time control Making the revolving speed pumped in 62 place branch of the second battery reduces, to increase the cooling power of the first battery 61, the second battery 62 cooling power is reduced, to realize the temperature equalization of the first battery 61 and the second battery 62.
And if 3 DEG C of T62-T61 >, battery thermal management controller controls in the cooling branch of the second battery 62 second swollen Swollen 42 aperture of valve increases, or controls the revolving speed pumped in 62 place branch of the second battery simultaneously and improve, and the first battery 61 of control is cold But the aperture of the second expansion valve 42 in branch is reduced, or controls the revolving speed drop pumped in 61 place branch of the first battery simultaneously Low, to increase the cooling power of the second battery 62, the cooling power of the first battery 61 is reduced, to realize the first battery 61 and second battery 62 temperature equalization.
In carrying out battery heating process, the battery temperature difference such as between the first battery 61 and the second battery 62 is more than 3 DEG C, i.e., if 3 DEG C of T61-T62 >, it is in battery thermal management controller control control 61 place heating circuit of the first battery plus The heating power of hot device 53 is reduced, and reduces by 51 revolving speed of pump in the circuit, and controls the heating in 62 heating circuit of the second battery The heating power of device 53 increases, and improves the circuit revolution speed, to increase the heating power of the first battery 61, the second electricity The heating power in pond 62 is reduced, to realize the temperature equalization of the first battery 61 and the second battery 62.If T62-T61 > 3 DEG C, then the heating power of the heater 53 in battery thermal management controller control 61 place heating circuit of the first battery increases, and Increase by 51 revolving speed of pump in the circuit, and the heating power for controlling the heater 53 in 62 heating circuit of the second battery reduces, and The circuit revolution speed is reduced, to reduce the heating power of the first battery 61, the heating power of the second battery 62 increases, from And realize the temperature equalization of the first battery 61 and the second battery 62.
It is understood that the difference of Figure 11 B and Figure 11 C is, Figure 11 B is by the first battery where the first battery 61 Cooling power between the cooling branch 402 of second battery where cooling branch 401 and the second battery 62 realizes function by regulating valve Rate is adjusted；The cooling branch of two batteries of Figure 11 C is to realize that the cooling power of 2 cooling branches is adjusted by expansion valve.Figure The specific adjustment process of 11B can refer to above-described embodiment, and details are not described herein again.
Humidity control system according to an embodiment of the present invention can accurately control each according to the virtual condition of each battery Battery heating power and cooling power, temperature is adjusted when battery temperature is excessively high or when too low, makes battery Temperature maintains preset range, avoids there is a situation where since temperature influences on-vehicle battery performance, also, since multiple batteries are cold But it is interconnected between branch, battery temperature adjustment module can pass through the system of the cooling branch of the corresponding battery of each battery of adjusting Cooling capacity aperture guarantees the equilibrium of temperature between each battery.
Figure 12 a is the flow chart of the temperature control method of the on-vehicle battery of the 6th embodiment according to the present invention.Vehicle mounted electric The humidity control system in pond include multiple compressors and the cooling branch of multiple batteries corresponding with multiple compressors, multiple batteries and The multiple battery temperature adjustment modules being connected between multiple batteries and the cooling branch of multiple batteries.As figure 12 a shows, vehicle mounted electric The temperature control method in pond the following steps are included:
S1 " obtains the temperature regulatory demand power P 1 of multiple batteries respectively.
Further, according to one embodiment of present invention, as shown in Figure 12b, the temperature tune of multiple batteries is obtained respectively Section demand power P1 is specifically included:
S11 " obtains the first parameter when the opening temperature adjusting of each battery respectively, and is generated often according to the first parameter First temperature regulatory demand power of a battery.
S12 " obtains second parameter of each battery when temperature is adjusted respectively, and generates each electricity according to the second parameter The second temperature regulatory demand power in pond.
S13 ", according to the second temperature regulatory demand function of the first temperature regulatory demand power of each battery and each battery Rate generates the temperature regulatory demand power P 1 of each battery respectively.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature are generated each according to the first parameter First temperature regulatory demand power of battery specifically includes: obtaining the first temperature difference Δ between initial temperature and target temperature T1.According to the first temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of each battery within a preset time, is passed through Following formula (2) generates the second temperature regulatory demand power of each battery:
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
Wherein, when being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C*M/t-I2*R。
S2 ", the temperature for obtaining multiple batteries respectively adjust actual power P2.
According to one embodiment of present invention, as shown in Figure 12b, the temperature for obtaining multiple batteries respectively adjusts actual power P2 is specifically included:
S21 " is obtained for adjusting the inlet temperature and outlet temperature of the flow path of each battery temperature, and is obtained coolant liquid Flow into the flow velocity v of flow path.
S22 " generates second temperature difference Δ T according to the inlet temperature and outlet temperature of the flow path of each battery2。
S23 ", according to the second temperature difference Δ T of each battery2Practical function is adjusted with the flow velocity v temperature for generating each battery Rate P2.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power P 2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is the face of flow path Product.
S3 " adjusts actual power P2 to the corresponding battery of each battery according to temperature regulatory demand power P 1 and temperature Temperature adjustment module is controlled to be adjusted with the temperature to battery.Wherein, it is interconnected between the cooling branch of multiple batteries, And it is corresponding to battery according to the temperature regulatory demand power P 1 of battery and the multiple compressors of temperature adjusting actual power P2 adjusting The refrigerating capacity aperture that the cooling branch of battery provides.
In an embodiment of the present invention, actual power P2 is adjusted to each electricity according to temperature regulatory demand power P 1 and temperature The corresponding battery temperature adjustment module in pond is controlled to be adjusted with the temperature to battery, is specifically included: according to temperature tune It saves demand power P1 and temperature adjusts actual power P2 and adjusts mould to the corresponding battery temperature of each battery in object time t Block is controlled to be adjusted with the temperature to battery, to reach target temperature.
Actual power P2, which is adjusted, according to the temperature regulatory demand power P 1 and temperature of battery adjusts multiple compressors to battery The refrigerating capacity aperture that the cooling branch of corresponding battery provides, specifically includes: judging the temperature regulatory demand power P 1 of each battery The temperature for whether being greater than battery adjusts actual power P2；If the temperature regulatory demand power P 1 of battery is greater than the temperature tune of battery Actual power P2 is saved, then improves multiple compressors and perhaps the refrigeration work consumption of single compressor or increases electricity corresponding to battery The refrigerating capacity aperture that the cooling branch in pond provides.
Specifically, after vehicle powers on, judge whether battery needs to carry out temperature adjusting, if it is determined that needing, then obtain respectively Initial temperature (i.e. Current Temperatures), target temperature and the object time t for reaching target temperature from initial temperature of each battery are taken, Wherein target temperature and object time t can be preset according to the actual situation, and calculated according to formula (1) and gone out the first temperature respectively Spend regulatory demand power.Meanwhile the average current I of each battery within a preset time is obtained respectively, and according to formula (2) point The second temperature regulatory demand power of each battery is not calculated.Then, respectively according to each the first temperature of battery regulatory demand function Rate and second temperature regulatory demand power calculate separately the temperature regulatory demand power P 1 of each battery (i.e. by the temperature of battery It is adjusted to the demand power of target temperature).Also, the inlet temperature and outlet temperature of each battery is obtained respectively, and obtains stream Flow rate information adjusts actual power P2 according to the temperature that formula (3) calculates separately out each battery.It is then possible to according to correspondence The temperature regulatory demand power and P1 and temperature of battery adjust actual power P2, are flowed into the cooling branch of corresponding battery by adjusting Refrigeration work consumption/heating power of the flow of the coolant liquid on road or corresponding heater power regulating cell, so as to true Guarantor is adjusted in object time t according to temperature of the virtual condition of each battery to battery.Simultaneously as multiple batteries are cold But it is interconnected between branch, therefore the cooling branch of the corresponding battery of regulating cell can be passed through according to the temperature of each battery Refrigerating capacity aperture, it is ensured that the equilibrium of temperature between each battery.Thus, it is possible to on-vehicle battery when the temperature is excessively high or Temperature is adjusted within the object time when too low, the temperature of on-vehicle battery is made to maintain preset range, avoid occur due to Temperature influences the case where on-vehicle battery performance.
It is described below in conjunction with specific embodiments how according to temperature regulatory demand power P 1 and the practical function of temperature adjusting Rate P2 is controlled the corresponding battery temperature adjustment module of each battery and is adjusted with the temperature to battery.
According to one embodiment of present invention, as shown in Figure 12b, the temperature control method of on-vehicle battery can also include:
S31 " generates total moisture content regulatory demand power P according to the temperature regulatory demand power P 1 of each batteryZ。
S32 " generates total maximum refrigeration work consumption P5 of multiple compressors according to the maximum refrigeration work consumption P of multiple compressors.
S33 " judges total moisture content regulatory demand power PZWhether the total maximum refrigeration work consumption P5 of multiple compressors is greater than.
S34 ", if total moisture content regulatory demand power PZIt, then will be more greater than total maximum refrigeration work consumption P5 of multiple compressors A compressor is adjusted to the refrigerating capacity aperture of the cooling branch of the corresponding battery of battery to maximum.
S35 ", if total moisture content regulatory demand power PZLess than or equal to total maximum refrigeration work consumption P5 of multiple compressors, Then according to total moisture content regulatory demand power PZAnd the difference of total maximum refrigeration work consumption P5 is to the system of the cooling branch of the corresponding battery of battery Cooling capacity aperture is adjusted.
Specifically, the total of entire humidity control system can be calculated according to the temperature regulatory demand power P 1 of each battery Temperature regulatory demand power PZ, i.e., total moisture content regulatory demand is can be obtained into the addition of temperature regulatory demand power P 1 of each battery Power PZ, while calculating according to the maximum refrigeration work consumption P of each compressor total maximum refrigeration work consumption P5 of multiple compressors, i.e., Total maximum refrigeration work consumption P5 is can be obtained into the maximum refrigeration work consumption P addition of each compressor.Next, it is determined whether PZ> P5, If it is, control is by the aperture regulation of each second expansion valve to maximum, by multiple compressors to the corresponding battery of battery The coolant rate of cooling branch is adjusted to maximum, so that battery can complete cooling in object time t.And if PZ≤ P5, then according to PZDifference between P5 is adjusted the aperture of the second expansion valve, wherein PZIt is got over the absolute value of P5 difference Greatly, the aperture of the second expansion valve is smaller, energy saving to achieve the purpose that.
According to one embodiment of present invention, as shown in figure 13, the temperature control method of battery can also include following step It is rapid:
The temperature of battery is detected, and judges whether temperature is greater than the first temperature threshold or is less than second temperature threshold value (S10" -S20").When the temperature of battery is greater than the first temperature threshold, into refrigerating mode (S30 ").Wherein, first is default Temperature threshold can be preset according to the actual situation, such as can be 40 DEG C.When the temperature of battery is less than or equal to the first temperature When threshold value, further judge whether the temperature of battery is less than second temperature threshold value, when the temperature of battery is less than second temperature threshold When value, into heating mode (S40 "-S50 ").Wherein, the second preset temperature threshold can be preset according to the actual situation, example It such as can be 0 DEG C.
Specifically, after vehicle powers on, the temperature of each battery of real-time detection, and judged.If wherein some battery Temperature be higher than 40 DEG C, illustrate that the temperature of the battery at this time is excessively high, to avoid high temperature from having an impact the performance of the battery, need Cooling processing is carried out to the battery, into refrigerating mode, concurrent power transmission pond refrigerating function starts information to air-conditioning system.And if The temperature of some battery is lower than 0 DEG C, illustrates that the temperature of the battery at this time is too low, to avoid low temperature from generating shadow to the performance of the battery Sound needs to carry out heating treatment to the battery, into heating mode, controls the cooling branch of corresponding battery and closes, and controls and add Hot device is opened, to provide heating power for battery.
According to one embodiment of present invention, as shown in figure 13, when for refrigerating mode, according to temperature regulatory demand power P1 and temperature adjust actual power P2 and are controlled the corresponding battery temperature adjustment module of each battery with the temperature to battery Degree is adjusted, and specifically includes:
S36 ", judges whether the temperature regulatory demand power P 1 of each battery is greater than the corresponding temperature of each battery and adjusts in fact Border power P 2.
S37 ", if the temperature regulatory demand power P 1 of some battery is greater than battery, corresponding temperature adjusts actual power P2, then the temperature regulatory demand power P 1 and temperature that obtain the battery adjust the difference power between actual power P2, and according to function Rate difference increases the power for cooling down the compressor of battery, or adjusts the coolant liquid for increasing the cooling branch of the corresponding battery of battery Flow, to increase the cooling power of battery.
S38 ", if the temperature regulatory demand power P 1 of some battery is less than or equal to battery, corresponding temperature adjusts reality Power P 2 then reduces the power of compressor or keeps the power of compressor constant, or the corresponding battery of adjusting reduction battery is cold But the coolant rate of branch, to reduce the cooling power of battery.
Specifically, when working in refrigerating mode, the P1 and P2 of each battery are obtained respectively, and judged.If its In the P1 of some battery be greater than P2, illustrate if according to current refrigeration work consumption or coolant rate, can not be in target The interior cooling for completing the battery, so, the difference power between the P1 of the battery and P2 is obtained, and be used for according to difference power increase The power of the compressor of the cooling battery, or increase the coolant rate of the battery cooling branch where the battery, to increase The cooling power of the battery, wherein the difference power of P1 and P2 is bigger, the power of corresponding compressor and the cooling liquid stream of the battery Amount increase is more, so that the temperature of the battery is reduced to target temperature in preset time t.And the if wherein P1 of some battery Less than or equal to P2, the power of the compressor for cooling down the battery can be kept constant or the appropriate power for reducing compressor, Or the coolant rate of the cooling branch of battery where reducing the battery, reduce the cooling power of battery.When all batteries When temperature is lower than 35 DEG C, then battery is cooling completes, and sends the letter of closing temperature regulatory function to on-board air conditioner by CAN communication Breath, and control the second electronic valve and close.After if humidity control system enters the refrigerating mode long period, such as after 1 hour, still There is the temperature of battery to be higher than 35 DEG C, then suitably increases the power of corresponding compressor again, so that the battery is completed to cool down as early as possible.
According to one embodiment of present invention, as shown in figure 13, when for heating mode, according to temperature regulatory demand power P1 and temperature adjust actual power P2 and are controlled the corresponding battery temperature adjustment module of each battery with the temperature to battery Degree is adjusted, and specifically includes:
S39 ", judges whether the temperature regulatory demand P1 power of each battery is greater than the corresponding temperature of each battery and adjusts in fact Border power P 2.
S310 ", if the temperature regulatory demand power P 1 of some battery is greater than battery, corresponding temperature adjusts actual power P2, then the temperature regulatory demand power P 1 and temperature that obtain the battery adjust the difference power between actual power P2, and according to function Rate difference increases the power of heater, to increase the heating power of the battery.
S311 ", if the temperature regulatory demand power P 1 of some battery is less than or equal to battery, corresponding temperature is adjusted in fact Border power P 2 then reduces the power of heater, or keeps the power of heater constant.
Specifically, when for heating mode, the P1 and P2 of each battery are obtained respectively, and are judged.If wherein certain The P1 of one battery is greater than P2, illustrates if according to current heating power or coolant rate, can not be within the object time The heating of the battery is completed, so, the difference power between the P1 of the battery and P2 is obtained, and increase for heating according to difference power The power of the heater of battery, so that the battery can complete temperature adjusting within the object time.And if the P1 of some battery It less than or equal to P2, can suitably reduce the power of heater, to save electric energy, or keep the power of heater constant.Work as institute There is the temperature of battery to be higher than preset temperature, such as at 10 DEG C, battery heating is completed, and is sent and is closed to on-board air conditioner by CAN communication The information of temp regulating function is closed, and controls heater closing.After if humidity control system enters the heating mode long period, Such as after 1 hour, still there is the temperature of battery lower than 10 DEG C, then suitably increases the power of heater again, so that the battery is completed as early as possible Heating.
For example, as shown in Figure 11 A, since the heating function of the first battery and the second battery is mutually indepedent, the first electricity Pond and the second battery are heated with a heater respectively, so only illustrating the function of battery heating function by taking the first battery as an example Rate is adjusted.(assuming that P11 is the temperature regulatory demand power of the first battery, P21 is that the temperature of the first battery adjusts actual power, The difference power of P11 and P21 is P31)
If P11 > P21, when the power for needing to adjust is P31 (P31=P11-P21), the heating power of heater increases P31, and improve the revolving speed of pump.
If P11≤P21, when the power for needing to adjust is P31 (P31=P11-P21), the power of heater is kept not Become, the power of heater is perhaps reduced into P31 or reduces the revolving speed of pump.
According to one embodiment of present invention, if the temperature control method of on-vehicle battery can also include: some battery Temperature regulatory demand power P 1 be less than corresponding temperature adjust actual power P2, then reduce the revolving speed of pump；If some battery Temperature regulatory demand power P 1 be greater than corresponding temperature adjust actual power P2, then improve the revolving speed of pump.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of some battery is less than P2, the revolving speed for controlling pump reduces, to save electric energy.And if the P1 of some battery is greater than P2, except control heater, compressor Power increases or the coolant rate increase in battery place circuit is outer, and the revolving speed that can also control pump improves, to increase unit The coolant liquid quality of cooling flowing path cross section is flowed through in time, thus improve the battery temperature adjust actual power P2, with Realize that temperature is adjusted in object time t.
According to one embodiment of present invention, the compressor for providing refrigerant for battery is multiple, the temperature of battery Adjusting method can also include: according to the temperature regulatory demand power P 1 of each battery and the maximum refrigeration work consumption of each compressor Judge the quantity of the compressor of starting.When for refrigerating mode, the compressor start of respective numbers is controlled.
Further, according to the maximum refrigeration work consumption P of the temperature regulatory demand power P 1 of each battery and each compressor Judge that the quantity of the compressor of starting specifically includes: total moisture content being generated according to the temperature regulatory demand power P 1 of each battery and is adjusted Actual power Pz；Judge whether total moisture content regulatory demand power P z is greater than the maximum refrigeration work consumption P of single compressor；If it is greater than The maximum refrigeration work consumption P of single compressor, then control multiple compressors while starting.
Specifically, when humidity control system enters refrigerating mode, the P1 of each battery is obtained respectively, and by each battery P1 be added and can calculate the total moisture content regulatory demand power P of entire humidity control systemZ.If Pz is greater than single compressor Maximum refrigeration work consumption, then control multiple compressors while starting work, and the aperture tune by adjusting corresponding regulating valve It throttles into the coolant rate of the cooling branch of each battery, to meet the cooling refrigeration power demand of corresponding battery.
Specifically, as shown in Figure 11 A, by taking compressor 1 is two as an example, when humidity control system enters refrigerating mode, Controller obtains the P1 of each battery respectively, the temperature of each battery adjusts actual power P2 and the maximum refrigeration of single compressor Power P, and the P1 of each battery is added to the total moisture content regulatory demand power P that can calculate entire humidity control systemZ, will be every The temperature of a battery adjusts actual power P2 and is added to obtain total moisture content adjusting actual power Pf, and the maximum of each compressor is freezed Power addition can calculate the sum of the maximum refrigeration work consumption of all compressors P5.Wherein, the temperature regulatory demand function of the first battery Rate is P11, and the temperature regulatory demand power of the second battery is P12.It is P21 that the temperature of first battery, which adjusts actual power, second It is P22 that the temperature of battery, which adjusts actual power,.The maximum refrigeration work consumption P of each compressor is equal.
If Pz≤P, only need to control a compressor operating, refrigeration work consumption is provided, also can control two pressures Contracting machine works together.If P < Pz≤P5 needs two compressors to work together, the initial refrigeration work consumption of each compressor For Pz/2.If Pz≤P5, controls compressor and run according to Pz refrigeration work consumption, and by adjusting first to fourth regulating valve Aperture, cool down the initial cooling power of the cooling branch of the first battery according to P11 refrigeration work consumption, the cooling branch of the second battery Road initial cooling power is cooled down according to P21 refrigeration work consumption.If Pz > P5, each compressor is according to maximum refrigeration work consumption P operation, and the initial cooling power of the cooling branch of the first battery can be carried out according to P5* [P11/ (P11+P12)] refrigeration work consumption Cooling, the initial cooling power of the cooling branch of the second battery can carry out cold according to P5* [P12/ (P11+P12)] refrigeration work consumption But.
According to one embodiment of present invention, when for refrigerating mode, when the temperature difference between battery is more than setting value, Increase the cooling power of the higher battery of temperature, so as to reduce the temperature difference between battery；When for heating mode, when battery it Between temperature difference be more than setting value when, increase the lower battery of temperature heating power.
It is appreciated that the temperature adjusting that can calculate separately out the first battery and the second battery needs when for refrigerating mode Power P 1 is sought, then adjusts corresponding second according to the maximum refrigeration work consumption P of the P1 of each battery and corresponding compressor respectively The aperture of expansion valve.And it adjusts actual power P2 according to the temperature of each battery respectively to continue to adjust opening for the second expansion valve 42 Degree.Meanwhile according to the temperature conditions between the first battery and the second battery, by adjusting the aperture of first to fourth regulating valve, Adjust the coolant rate distribution of the cooling branch of the first battery and the cooling branch of the second battery, thus reach the first battery of control and The equilibrium of second battery temperature.Wherein, when the temperature of the first battery is higher than the temperature of the second battery and difference is more than setting value, It can increase the aperture of the first regulating valve and third regulating valve, reduce the aperture of the second regulating valve and the 4th regulating valve, to increase the The cooling power of one battery；When the temperature of the first battery and the second battery is equal, controllable first to fourth regulating valve is opened It spends identical.And when being heating mode, when the temperature of the first battery is lower than the temperature of the second battery and difference is more than setting value, then Increase the heating power of the corresponding heater of the first battery.Thus, it is possible to keep the temperature equalization between two batteries.
The temperature control method of on-vehicle battery according to an embodiment of the present invention, can be according to the virtual condition essence of each battery The heating power and cooling power for really controlling each battery, adjust temperature when battery temperature is excessively high or when too low Section, makes the temperature of battery maintain preset range, and can guarantee the equilibrium of temperature between each battery.
The temperature of vehicle adjusts the temperature adjusting for including battery and the temperature adjusting in compartment.To meet in the temperature of battery In the case where it is required that, make vehicle interior temperature meet demand, needs the coolant rate to the cooling branch of battery and interior cooling branch Carry out reasonable distribution.For this purpose, the embodiment of the present invention proposes a kind of humidity control system of vehicle.Below with reference to the accompanying drawings it describes The temperature control method and humidity control system for the vehicle that the embodiment of the present invention proposes.
Fig. 2 is the block diagram of the humidity control system of vehicle according to an embodiment of the invention.As shown in Fig. 2, The humidity control system includes: that compressor 1, condenser 2, interior cooling branch 3, the cooling branch 4 of battery and battery temperature are adjusted Module 5.
Wherein, condenser 2 is connected with compressor 1, and the cooling branch 3 of car is connected between compressor 1 and condenser 2, electricity The cooling branch 4 in pond is connected between compressor 1 and condenser 2.Battery temperature adjustment module 5 is connected with the cooling branch 4 of battery, For obtain battery 6 temperature regulatory demand power P 1 and temperature adjust actual power P2, and obtain vehicle vehicle interior temperature T and Air-conditioning set temperature Ts, and actual power P2, vehicle interior temperature T and air-conditioning are adjusted according to temperature regulatory demand power P 1, temperature Set temperature Ts is adjusted the aperture of interior cooling branch 3 and the cooling branch 4 of battery.
Specifically, battery temperature adjustment module 5 obtains the temperature regulatory demand power P 1 of battery 6, the temperature of battery 6 is adjusted Actual power P2, the vehicle interior temperature T of vehicle and air-conditioning set temperature Ts, and interior cooling branch 3 is adjusted according to P1, P2, T and Ts The aperture of branch 4 is cooled down, with battery to distribute refrigerating capacity.As shown in Figure 1, when on-board air conditioner refrigerating function is opened, coolant liquid Flow direction are as follows: the interior cooling 3-compressor of branch 1 of 1-condenser of compressor 2-.In the cooling branch 4 of battery there are two tools Pipeline, first pipe are connected with compressor 1, and second pipe is connected with battery temperature adjustment module 5, wherein first pipe With second pipe is mutually independent closes on setting.When battery temperature is excessively high, the starting of battery refrigerating function, first pipe and second The flow direction of coolant liquid is respectively as follows: the cooling 4-compressor of branch 1 of compressor 1-condenser, 2-battery in pipeline；Battery is cold But the cooling branch 4 of 4-battery temperature of branch adjustment module, 5-battery, 6-battery temperature, 5-battery of adjustment module.And in battery 6 Temperature it is too low when, battery temperature adjustment module 5 starts battery heating function, the flow direction of coolant liquid in second pipe are as follows: The cooling branch 4 of cooling 4-battery temperature of branch adjustment module, 5-battery, 6-battery temperature, the 5-battery of adjustment module of battery.
It is appreciated that the refrigeration work consumption of battery temperature adjustment module 5 is provided by on-board air conditioner, shared with interior refrigeration system Refrigerating capacity so as to reduce the volume of humidity control system, and keeps the distribution of coolant rate more flexible.This is as a result, System is adjusted by the aperture to interior cooling branch and the cooling branch of battery, both can on-vehicle battery when the temperature is excessively high or Temperature is quickly adjusted when person is too low, the temperature of on-vehicle battery is made to maintain preset range, avoids occurring due to temperature shadow The case where ringing on-vehicle battery performance, can also make vehicle interior temperature meet demand in the case where the temperature of battery is met the requirements.
According to one embodiment of present invention, battery temperature adjustment module 5 is specifically used for: according to temperature regulatory demand power P1, temperature adjust actual power P2, vehicle interior temperature T and air-conditioning set temperature Ts to the cooling branch 3 of car and the cooling branch 4 of battery Aperture be adjusted so that battery 6 reaches target temperature in object time t.
Specifically, battery temperature adjustment module 5 is cooling down branch 3 and the cooling branch of battery to car according to P1, P2, T and Ts When the aperture on road 4 is adjusted, it can be ensured that accurately control on-vehicle battery according to the virtual condition of battery 6 in object time t Heating power and cooling power, thus on-vehicle battery when the temperature is excessively high or it is too low when temperature is adjusted, and In the case that the temperature of battery is met the requirements, make vehicle interior temperature meet demand.
Further, according to one embodiment of present invention, as shown in figure 3, the cooling branch 4 of battery includes heat exchanger 41, Heat exchanger 41 includes first pipe and second pipe, and second pipe is connected with battery temperature adjustment module 5, first pipe and compression Machine 1 is connected, wherein first pipe with second pipe is mutually independent closes on setting.Battery temperature adjustment module 5 includes: to adjust The flow path (not specifically illustrated in figure) of batteries temperature, flow path are arranged among battery 6.It is connected between flow path and heat exchanger 41 Pump 51, media Containers 52, heater 53 and controller (not specifically illustrated in figure).Wherein, controller obtains battery 6 Temperature regulatory demand power P 1 and the temperature of battery adjust actual power P2, and according to temperature regulatory demand power P 1 and temperature tune The temperature of battery 6 is adjusted in section actual power P2, and controller is adjusted in fact according to temperature regulatory demand power P 1, temperature Border power P 2, vehicle interior temperature T and air-conditioning set temperature Ts adjust the aperture of interior cooling branch 3 and the cooling branch 4 of battery It is whole, to make vehicle interior temperature meet demand in the case where the temperature of battery is met the requirements.Car cools down branch 3 Evaporator 31, the first expansion valve 32 and the first electronic valve 33.The cooling branch 4 of battery can also include the second expansion valve 42 and second Electronic valve 43.
The temperature regulatory demand power P 1 and temperature for how obtaining battery 6 adjust actual power P2 and can refer to above-mentioned implementation Example, to avoid redundancy, details are not described herein again.
It is how cold to car according to P1, P2, T and Ts that battery temperature adjustment module 5 is described below with reference to specific embodiment But the aperture of branch 3 and the cooling branch 4 of battery is adjusted, to make car in the case where the temperature of battery is met the requirements Temperature meet demand.
According to one embodiment of present invention, when for refrigerating mode, controller can be in temperature regulatory demand power P 1 Actual power P2 is adjusted greater than temperature, and when battery temperature is greater than third temperature threshold T3, reduces opening for interior cooling branch 4 Degree, and improve the aperture of the cooling branch 4 of battery.Wherein, third temperature threshold is greater than the first temperature threshold, for example, third is default Threshold value can be 45 DEG C.
Specifically, after vehicle powers on, if the temperature of battery 6 be higher than 40 DEG C, controller control humidity control system into Enter refrigerating mode, to cool down to battery 6.During battery 6 is cooling, controller obtains P1 and P2, is judging temperature When regulatory demand power P 1 is greater than temperature adjusting actual power P2, then further judge whether battery temperature is greater than 45 DEG C.If Battery temperature is greater than 45 DEG C, illustrates that battery temperature is excessively high, and on-board air conditioner preferentially meets the cooling requirement of battery 6, controller control The aperture of the first expansion valve 32 is reduced, the aperture of the second expansion valve 42 is increased, to reduce the cooling liquid stream of interior cooling branch 3 Amount increases the coolant rate of the cooling branch 4 of battery, so that battery 6 completes cooling as early as possible.35 DEG C are reduced in battery temperature When, battery 6 is cooling to be completed, and controller controls the cooling branch 4 of battery and closes.Thus, it is possible to the feelings met the requirements in battery temperature Under condition, make vehicle interior temperature meet demand.
According to one embodiment of present invention, controller can be also used for being less than third temperature threshold in battery temperature, and When vehicle interior temperature T is greater than air-conditioning set temperature Ts, increase the aperture of interior cooling branch 4, and reduces opening for the cooling branch 3 of battery Degree.
Specifically, during battery 6 is cooling, controller further judges when judging battery temperature less than 45 DEG C Whether vehicle interior temperature T is greater than air-conditioning set temperature Ts.If T > Ts illustrates that vehicle interior temperature T does not reach set temperature, vehicle Interior temperature is higher, and preferential to meet interior refrigeration demand to prevent user from not feeling good, controller increases the first expansion valve 32 Aperture reduces the aperture of the second expansion valve 42.And if vehicle interior temperature T reaches air-conditioning set temperature Ts, interior refrigeration work consumption is Through abundance, and reach balance, then controller increases the aperture of the second expansion valve 42, to increase the cooling power of battery 6.In battery When temperature is reduced to 35 DEG C, battery 6 is cooling to be completed, and controller controls the second electronic valve 33 and closes.Thus, it is possible in battery temperature In the case where meeting the requirements, make vehicle interior temperature meet demand.
Handled by different level that is, done to battery temperature herein, temperature controlled threshold value be respectively 40 DEG C, 45 DEG C and 35℃.When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature is reduced to 35 DEG C, then battery 6 has been cooled down At.When battery temperature reaches 45 DEG C, preferentially meet battery cooling requirement.In addition, temperature regulatory demand power P 1 is greater than temperature When adjusting actual power P2, if battery temperature is no more than 45 DEG C, still preferential interior refrigeration demand, if interior system Cold power is sufficient, and reaches balance, then controller increases the aperture of the cooling branch 4 of battery, to increase the cooling function of battery Rate.And if can preferentially meet interior refrigeration need when temperature regulatory demand power P 1 is less than or equal to temperature adjusting actual power P2 It asks.
According to one embodiment of present invention, when for heating mode, controller is greater than in temperature regulatory demand power P 1 When temperature adjusts actual power P2, the difference power between temperature regulatory demand power P 1 and temperature adjusting actual power P2 is obtained, And the power for heating the heater 53 of battery 6 is increased according to difference power, and be less than in temperature regulatory demand power P 1 or When adjusting actual power P2 equal to temperature, keep the power of heater 53 constant.
Specifically, vehicle may include single battery 6, can also be made of multiple 6 series, parallel of battery or mixed connection.Such as Shown in Figure 14 A-14B, by battery be 2 for, when battery be 2 (the first battery 61 and the second battery 62), and be connected in series When, pump corresponds to 2, and two pump one is positive pump 511, and one is reversing pump 522.
As shown in Figure 14 A, when forward direction 511 starting of pump, the flow direction of coolant liquid in second pipe are as follows: media Containers Positive 511-the first the 61-the second battery of the 55-the first battery of temperature sensor of pump of 52-41-heaters of heat exchanger 53-62- 56-flow sensor of second temperature sensor, 57-media Containers 52.As described in Figure 14 B, when reversing pump 522 starts, second The flow direction of coolant liquid in pipeline are as follows: 52-flow sensor of media Containers the 56-the second battery of 57-second temperature sensor 62-the first 41-media Containers of battery the 61-the first temperature sensor 55-reversing pump, 512-heater, 53-heat exchanger 52.
For example, entering cooling mould in humidity control system when the first battery 61 and 62 refrigerating function of the second battery are opened When formula, controller obtains the P1 of each battery respectively, the temperature of each battery adjusts actual power P2 and single compressor most Big refrigeration work consumption P, and the P1 of each battery is added to the total moisture content regulatory demand power that can calculate entire humidity control system PZ, the temperature of each battery is adjusted into actual power P2 and is added to obtain total moisture content adjusting actual power Pf.Wherein, first battery Temperature regulatory demand power is P11, and the temperature regulatory demand power of the second battery is P12.The temperature of first battery adjusts practical Power is P21, and it is P22 that the temperature of the second battery, which adjusts actual power,.The maximum refrigeration work consumption P of compressor.
If total moisture content regulatory demand power PZMaximum with the sum of interior cooling requirement power P 4 less than or equal to compressor Refrigeration work consumption P, i.e. Pz+P4≤P, then compressor is according to PZThe operation of+P4 refrigeration work consumption.And Pz < P, P4 < P.
If Pz+P4 > P, judge whether the first battery 61 or the temperature of the second battery 62 are greater than 45 DEG C, if greatly In 45 DEG C, then being preferably that battery is cooling provides cooling power, and controller control compressor 1 is run according to maximum refrigeration work consumption P, The cooling power of the cooling branch 4 of battery is Pz, and the cooling power of the cooling branch 3 of car is equal to P-Pz.
If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably that car mentions For cooling power, compressor 1 is run according to maximum refrigeration work consumption P, and the cooling power of the cooling branch of car is P4, the cooling branch of battery The cooling power on road is equal to P-P4.
If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery.The cooling branch of battery Cooling power is Pz.
It is that the temperature of first battery 61 and the second battery 62 adjusts actual power and need to adjust as Pz > Pf for Pf Power is Pc (Pc=Pz-Pf).If Pz+P4+Pc≤P, the refrigeration work consumption that compressor needs to increase is Pc, and it is swollen to increase second The aperture of swollen valve 42 improves the revolving speed of pump 51.It is handled as follows simultaneously:
If P11-P21=Pc1, P12-P22=Pc2, P11 > P21, P12 > P22:
When Pc1 is greater than the set value, controls positive pump 511 and open, reversing pump 512 is closed, so that the first battery 61 is cold But power increases.When Pc2 is greater than the set value, control reversing pump 512 is opened, and forward direction pump 511 is closed, so that the second battery 62 Cooling power increases.As Pc1 > Pc2, controls positive pump 511 and open, reversing pump 512 is closed, so that the first battery 61 is cold But power increases.As Pc1≤Pc2, control reversing pump 512 is opened, and forward direction pump 511 is closed, so that the cooling of the second battery 62 Power increases.
Also, when the temperature T61 of the first battery 61 is greater than the temperature T62 of the second battery 62, controls positive pump 511 and open It opens, reversing pump 512 is closed, so that the cooling power of the first battery 61 increases.When the temperature T61 of the first battery 61 is less than or equal to the When the temperature T62 of two batteries 62, control reversing pump 512 is opened, and forward direction pump 511 is closed, so that the cooling power of battery 62 increases.
If P21-P11=Pc1, P22-P12=Pc2, P11≤P21, P12≤P22 then can be according to following processing:
When Pc1 is greater than the set value, controls positive pump 511 and close, reversing pump 512 is opened, so that the first battery 61 is cold But power is reduced.When Pc2 is greater than the set value, control reversing pump 512 is closed, and forward direction pump 511 is opened, so that the second battery 62 Cooling power is reduced.As Pc1 > Pc2, controls positive pump 511 and close, reversing pump 512 is opened, so that the first battery 61 is cold But power is reduced.As Pc1≤Pc2, control reversing pump 512 is closed, and forward direction pump 511 is opened, so that the cooling of the second battery 62 Power is reduced.
Also, when the temperature T61 of the first battery 61 is greater than the temperature T62 of the second battery 62, controls positive pump 511 and open It opens, reversing pump 512 is closed, so that the cooling power of the first battery 61 increases.When the temperature T61 of the first battery 61 is less than or equal to the When the temperature T62 of two batteries 62, control reversing pump 512 is opened, and forward direction pump 511 is closed, so that the cooling power of battery 62 increases. Alternatively, it is also possible to be, in the starting of the refrigerating function of the first battery 61 and the second battery 62, if the temperature of the first battery 61 is high In the temperature of the second battery 62, and difference is more than preset value, then positive 511 work of pump of controller control, so that coolant liquid first flows The first battery 61 is crossed, the second battery 62 is again passed through, so that the first battery 61 be made to complete cooling as early as possible.And if second battery 62 Temperature is higher than the temperature of the first battery 61, and difference is more than preset value, then controller control reversing pump 512 works, so that cooling Liquid firstly flows through the second battery 62, again passes through the first battery 61, so that the second battery 62 be made to complete cooling as early as possible.As a result, by changing Become the flow direction of coolant liquid, it is possible to reduce the temperature difference of the first battery 61 and the second battery 62.
And when the refrigerating function and heating function of the first battery 61 and the second battery 62 all do not start, if the first electricity The temperature difference of pond 61 and the second battery 62 is more than preset value, then controller can control positive pump 511 or reversing pump 512 starts, So that the coolant flow in the cooling branch 4 of battery, thus the temperature of balanced first battery 61 and the second battery 62.
When the maximum value in the mutual temperature difference of each battery that pump 51 rotates forward and battery management controller is got is more than pre- If when value, then battery management controller sends control and pumps the information inverted to battery thermal management controller, so that battery thermal management Device control pump reversion (flow direction in circuit is counterclockwise), so that the temperature difference of each series-connected cell is less.
In conclusion the humidity control system of vehicle according to an embodiment of the present invention, is obtained by battery temperature adjustment module The temperature regulatory demand power and temperature for taking battery adjust actual power, and obtain the vehicle interior temperature and air-conditioning setting temperature of vehicle Degree, and actual power, vehicle interior temperature and air-conditioning set temperature are adjusted to car cooling according to temperature regulatory demand power, temperature The aperture of branch and the cooling branch of battery is adjusted.The system passes through to the cooling branch of car and the cooling branch of battery as a result, Aperture be adjusted, both can on-vehicle battery when the temperature is excessively high or it is too low when temperature is quickly adjusted, make vehicle-mounted The temperature of battery maintains preset range, avoid there is a situation where due to temperature influence on-vehicle battery performance, can also be in battery In the case that temperature is met the requirements, make vehicle interior temperature meet demand.
Figure 15 is the flow chart of the temperature control method of the vehicle of one embodiment according to the present invention.As shown in figure 15, The temperature control method of vehicle the following steps are included:
S1 ', the temperature regulatory demand power P 1 and temperature for obtaining battery adjust actual power P2.
Further, as shown in figure 16, in an embodiment of the present invention, the temperature regulatory demand power P 1 for obtaining battery has Body includes:
S11 ' obtains the first parameter when battery opening temperature is adjusted, and generates the first temperature according to the first parameter and adjust Demand power.
S12 ' obtains second parameter of the battery when temperature is adjusted, and generates second temperature according to the second parameter and adjust need Seek power.
S13 ' generates temperature regulatory demand function according to the first temperature regulatory demand power and second temperature regulatory demand power Rate P1.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature generate first according to the first parameter Temperature regulatory demand power specifically includes: obtaining the first temperature difference Δ T between initial temperature and target temperature1；According to first Temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of battery within a preset time, by following Formula (2) generates second temperature regulatory demand power:
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
When being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C* M/t-I2*R。
According to one embodiment of present invention, as shown in figure 16, the temperature for obtaining battery adjusts actual power P2 and specifically wraps It includes:
S14 ', obtains the inlet temperature and outlet temperature of the flow path for regulating cell temperature, and obtains coolant liquid inflow The flow velocity v of flow path.
S15 ' generates second temperature difference Δ T according to inlet temperature and outlet temperature2。
S16 ', according to second temperature difference Δ T2Temperature, which is generated, with flow velocity v adjusts actual power P2.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power P 2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is the cross of flow path Sectional area.
S2 ' obtains the vehicle interior temperature T and air-conditioning set temperature Ts of vehicle.
S3 ' adjusts actual power P2, vehicle interior temperature T and air-conditioning set temperature according to temperature regulatory demand power P 1, temperature Ts is adjusted the aperture of interior cooling branch and the cooling branch of battery.
Further, according to one embodiment of present invention, actual power is adjusted according to temperature regulatory demand power P 1, temperature P2, vehicle interior temperature T and air-conditioning set temperature Ts are adjusted the aperture of interior cooling branch and the cooling branch of battery, comprising: It is cooling to car that actual power P2, vehicle interior temperature T and air-conditioning set temperature Ts are adjusted according to temperature regulatory demand power P 1, temperature The aperture of branch and the cooling branch of battery is adjusted, so that battery reaches target temperature in object time t.
Specifically, after vehicle powers on, judge whether vehicle needs to carry out temperature adjusting, obtain the first of battery if necessary Beginning temperature (i.e. Current Temperatures), target temperature and the object time t for reaching target temperature from initial temperature, wherein target temperature and Object time t can be preset according to the actual situation, and calculate the first temperature regulatory demand power according to formula (1).Together When, the average current I of battery within a preset time is obtained, and calculate second temperature regulatory demand power according to formula (2).So Afterwards, (i.e. will according to the first temperature regulatory demand power and second temperature regulatory demand power calculation temperature regulatory demand power P 1 The temperature of battery is adjusted to the demand power of target temperature).Also, the inlet temperature and outlet temperature of battery is obtained, and is obtained Flow rate information is flowed, temperature is calculated according to formula (3) and adjusts actual power P2.And obtain vehicle interior temperature T and air-conditioning set temperature Ts.Finally, being adjusted according to the aperture of P1, P2, T and Ts to interior cooling branch and the cooling branch of battery, make battery in mesh Reach target temperature in mark time t.This method is adjusted by the aperture to interior cooling branch and the cooling branch of battery as a result, It is whole, both can on-vehicle battery when the temperature is excessively high or it is too low when temperature is quickly adjusted, tie up the temperature of on-vehicle battery Hold in preset range, avoid there is a situation where due to temperature influence on-vehicle battery performance, can also the temperature of battery meet want In the case where asking, make vehicle interior temperature meet demand.
According to one embodiment of present invention, as shown in figure 17, the temperature control method of above-mentioned vehicle can also include:
The temperature of battery is detected, and judges whether temperature is greater than the first temperature threshold or is less than second temperature threshold value (S10' -S20').When the temperature of battery is greater than the first temperature threshold, into refrigerating mode (S30 ').Wherein, first is default Temperature threshold can be preset according to the actual situation, such as can be 40 DEG C.When the temperature of battery is less than or equal to the first temperature When threshold value, further judge whether the temperature of battery is less than second temperature threshold value, when the temperature of battery is less than second temperature threshold When value, into heating mode (S40 '-S50 ').Wherein, the second preset temperature threshold can be preset according to the actual situation, example It such as can be 0 DEG C.
Specifically, after vehicle powers on, the temperature of real-time detection battery, and judged.If the temperature of battery is higher than 40 DEG C, illustrate that the temperature of battery at this time is excessively high, to avoid high temperature from having an impact the performance of battery, needs to carry out at cooling battery Reason controls compressor start into refrigerating mode, so that coolant liquid and battery carry out heat exchange to reduce the temperature of battery.And If the temperature of battery is lower than 0 DEG C, illustrate that the temperature of battery at this time is too low, to avoid low temperature from having an impact the performance of battery, It needs to carry out heating treatment to battery, into heating mode, controls heater and open, to provide heating power.
It is understood that adjusting actual power P2, vehicle interior temperature according to the temperature regulatory demand power P 1 of battery, temperature T and air-conditioning set temperature Ts is adjusted by adjusting the aperture of interior cooling branch and the cooling branch of battery, can be in battery While meeting temperature requirement, make vehicle interior temperature meet demand.Also, temperature regulatory demand power P 1 and temperature adjust practical function Rate P2 is easy to obtain.
Specifically, as can be seen from the above embodiments, P1 consists of two parts, for cooling down battery, when battery needs are cold When but, battery initial temperature is 45 DEG C, and the cooling target temperature of battery is 35 DEG C, then battery drops to 35 DEG C of needs from 45 DEG C and distributes Heat be it is fixed, pass through formula (1) i.e. Δ T1* C*M/t is directly calculated and can be obtained.Wherein, Δ T1For the initial temperature and The first temperature difference between target temperature, t are the object time, and C is the specific heat capacity of battery, and M is the quality of battery.Meanwhile battery In cooling procedure, there are electric discharge and charging process, this process can generate heat, and the heat of this part can also pass through detection electricity Stream directly obtains, and passes through formula (3) i.e. I2* R directly calculates the heating power of present battery, i.e. second temperature regulatory demand Power.Wherein, I is average current, and R is the internal resistance of battery.Key point of the invention first is that cooling time is adjustable, and cooled down It can accurately be determined at the time, the present invention is to set that (t can be practical according to user demand either vehicle based on object time t Design conditions change).After object time t required for cooling complete has been determined, so that it may which estimating out present battery cooling needs The temperature regulatory demand power P 1 wanted, P1=Δ T1*C*M/t+I2*R.And start if it is heating function, then temperature regulatory demand Power P 1=Δ T1*C*M/t-I2* R, i.e., battery during heating, battery discharge or charging current are bigger, required Heating power, that is, temperature regulatory demand power P 1 is smaller.
Since the electric discharge either charging current of battery is variation, so I2* R is variation, therefore in order to better Ensure the accuracy of cooling time, cooling power also will with the either variation of charging current of the current averaged discharge of battery and Variation.If on-board air conditioner gives battery and compartment cooling simultaneously, when the discharge current of battery is lesser, I2* R will Reduce, on-board air conditioner can distribute more refrigeration work consumptions and be given to compartment at this time, so that compartment reaches setting temperature faster.Together When, when the electric discharge of battery or larger charging current, I2* R will be larger, and on-board air conditioner can distribute more refrigeration at this time Power is given to battery.Adjusting in this way, so that it is accurate always the time required to battery is cooling, while conjunction that again can be more efficient Reason utilizes the refrigeration work consumption of on-board air conditioner, without configuring the biggish air-conditioning of cooling power, causes the waste of refrigeration work consumption.
Since battery cooling time is influenced by cooling efficiency, since cooling efficiency is current by ambient temperature and battery The influence of temperature, during battery is cooling, the efficiency of humidity control system is also continually changing, so cooling efficiency is not May be 100%, thus only according to P1 be can not accurate regulating cell cooling time, it is necessary to detect the temperature of battery Adjust actual power P2.In the present invention, the temperature of battery, which adjusts actual power P2, can pass through formula (3) i.e. Δ T2*c*m It is calculated.P2 can also can also be calculated by the practical cooling power P2 of battery by formula (4) i.e. Δ T3*C*m1 Out, wherein Δ T3 is the temperature change of battery in a certain period of time, and C is the specific heat capacity of battery, and m1 is battery quality.But due to The quality of battery is larger, so temperature change is unobvious in the unit time, the long period is needed just to can detecte out the temperature difference, is not inconsistent Requirement of real-time is closed, so calculating P2 power generally according to formula (3).
It is influenced by cooling efficiency, P2 is difficult to be equal to P1, in order to enable battery cools down the more acurrate needs of object time t It is adjusted in real time according to the power difference between P1 and P2, to ensure the temperature regulatory demand power P 1 of battery and the temperature of battery It is equal that degree adjusts actual power P2.Below in conjunction with the description of specifically embodiment how according to temperature regulatory demand power P 1, temperature Degree adjusts actual power P2, vehicle interior temperature T and air-conditioning set temperature Ts to the aperture of interior cooling branch and the cooling branch of battery It is adjusted, is adjusted with the temperature to vehicle.
According to one embodiment of present invention, as shown in figure 18, when for refrigerating mode, according to temperature regulatory demand power P1, temperature adjust actual power P2, vehicle interior temperature T and air-conditioning set temperature Ts and cool down branch to interior cooling branch and battery Aperture, which is adjusted, to be specifically included:
S31 ' judges whether battery temperature T is big when temperature regulatory demand power P 1, which is greater than temperature, adjusts actual power P2 In third temperature threshold.Wherein, third temperature threshold is greater than the first temperature threshold, for example, third temperature threshold can be 45 DEG C.
S32 ' reduces the aperture of interior cooling branch if battery temperature T is greater than third temperature threshold, and improves electricity The aperture of the cooling branch in pond.
Specifically, it after vehicle powers on, if the temperature of battery is higher than 40 DEG C, controls humidity control system and enters cooling mould Formula, to be cooled down to battery.During battery is cooling, P1 and P2 is obtained, is judging that temperature regulatory demand power P 1 is big When temperature adjusts actual power P2, then further judge whether battery temperature is greater than 45 DEG C.If battery temperature is greater than 45 DEG C, Illustrating that battery temperature is excessively high, on-board air conditioner preferentially meets the cooling requirement of battery 6, and control reduces the aperture of interior cooling branch, Increase the aperture of the cooling branch of battery, to reduce the coolant rate of interior cooling branch, increases the cooling of the cooling branch of battery Flow quantity, so that battery is completed to cool down as early as possible.When battery temperature is reduced to 35 DEG C, battery is cooling to be completed, and control battery is cooling Branch is closed.Thus, it is possible to make vehicle interior temperature meet demand in the case where the temperature of battery is met the requirements.
According to one embodiment of present invention, as shown in figure 18, the temperature control method of above-mentioned vehicle can also include:
S33 ' further judges whether vehicle interior temperature T sets greater than air-conditioning if battery temperature is less than third temperature threshold Determine temperature Ts.
S34 ' increases the aperture of interior cooling branch if vehicle interior temperature T is greater than air-conditioning set temperature Ts, and reduces The aperture of the cooling branch of battery.
Specifically, during battery is cooling, when judging battery temperature less than 45 DEG C, further judge vehicle interior temperature Whether T is greater than air-conditioning set temperature Ts.If T > Ts, illustrate that vehicle interior temperature T does not reach set temperature, vehicle interior temperature compared with Height, it is preferential to meet interior refrigeration demand to prevent user from not feeling good, increase the aperture of interior cooling branch, it is cold to reduce battery But the aperture of branch.And if vehicle interior temperature T reaches air-conditioning set temperature Ts, interior refrigeration work consumption is sufficient, and reaches flat Weighing apparatus increases the aperture of the cooling branch of battery, then to increase the cooling power of battery.When battery temperature is reduced to 35 DEG C, battery Cooling to complete, the cooling branch of control battery is closed.Thus, it is possible to make vehicle interior temperature in the case where battery temperature is met the requirements Meet demand.
Handled by different level that is, done to battery temperature herein, temperature controlled threshold value be respectively 40 DEG C, 45 DEG C and 35℃.When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature is reduced to 35 DEG C, then battery has been cooled down At.When battery temperature reaches 45 DEG C, preferentially meet battery cooling requirement.In addition, temperature regulatory demand power P 1 is greater than temperature When adjusting actual power P2, if battery temperature less than 45 DEG C, first meets interior refrigeration demand, if interior refrigeration work consumption is Through abundance, and reach balance, then increases the aperture of the cooling branch of battery, to increase the cooling power of battery.And if temperature tune When saving demand power P1 less than or equal to temperature adjusting actual power P2, it can preferentially meet interior refrigeration demand.
According to one embodiment of present invention, as shown in figure 18, when for heating mode, according to temperature regulatory demand power P1 and temperature adjusting actual power P2 are adjusted the temperature of battery and specifically include:
S35 ', judges whether temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2.
S36 ' obtains temperature regulatory demand if temperature regulatory demand power P 1 is greater than temperature and adjusts actual power P2 Power P 1 and temperature adjust the difference power between actual power P2, and increase the heater for heating battery according to difference power Power.
S37 ' keeps heater if temperature regulatory demand power P 1 is less than or equal to temperature and adjusts actual power P2 Power it is constant.
Specifically, when entering heating mode, heater is opened, and the power of heater is adjusted according to P1 and P2.If P1 Greater than P2, illustrate the temperature of battery can not be made to rise in object time t if heater is heated according to current power Target temperature.Therefore continue to obtain the difference power between P1 and P2, and increase the power of heater according to difference power, wherein P1 Bigger with the difference of P2, the power of heater is increased more.And if P1 is less than or equal to P2, the power of heater can be kept It is constant.When the temperature of battery is higher than preset temperature, such as at 10 DEG C, battery heating is completed, and is communicated by CAN to on-board air conditioner The information of closing temperature regulatory function is sent, and controls heater closing.If into after the heating mode long period, such as 1 After hour, the temperature of battery still is below 10 DEG C, then suitably increases the power of heater, so that battery is completed to heat up as early as possible.By This, can make battery complete temperature within the object time according to the virtual condition precise control of temperature regulation power of battery It adjusts.
According to one embodiment of present invention, if the temperature control method of above-mentioned vehicle can also include: temperature tune It saves demand power P1 and is less than temperature adjusting actual power P2, then reduce the revolving speed of pump.If temperature regulatory demand power P 1 is greater than Temperature adjusts actual power P2, then improves the revolving speed of pump.
Specifically, when humidity control system enters heating mode or refrigerating mode, if P1 is less than P2, pump is controlled Revolving speed reduces, to save electric energy.And if P1 is greater than P2, control is cooling except the power increase or control battery that can control heater Outside the aperture of branch increases, the revolving speed for also controlling pump is improved, and can be increased and be flowed through the cold of cooling flowing path cross section in the unit time But liquid quality, so that improving temperature adjusts actual power P2, to realize that the temperature of battery is adjusted in object time t.
Vehicle may include single battery, can also be made of multiple battery series, parallel or mixed connection.Such as Figure 14 A-14B Shown, by taking battery is 2 as an example, when battery is 2 (the first battery and the second battery), pump corresponds to two, and two pumps One is positive pump, and one is reversing pump.
When humidity control system enters refrigerating mode, controller obtains the temperature of the P1 of each battery, each battery respectively Degree adjusts the maximum refrigeration work consumption P of actual power P2 and single compressor, and the P1 of each battery addition can be calculated entirely The total moisture content regulatory demand power P of humidity control systemZ, the temperature of each battery is adjusted into actual power P2 and is added to obtain total temperature Degree adjusts actual power Pf.Wherein, the temperature regulatory demand power of the first battery is P11, the temperature regulatory demand of the second battery Power is P12.It is P21 that the temperature of first battery, which adjusts actual power, and it is P22 that the temperature of the second battery, which adjusts actual power,.Pressure The maximum refrigeration work consumption P of contracting machine.
If total moisture content regulatory demand power PZMaximum with the sum of interior cooling requirement power P 4 less than or equal to compressor Refrigeration work consumption P, i.e. Pz+P4≤P, then compressor is according to PZThe operation of+P4 refrigeration work consumption.
If Pz+P4 > P, judge whether the temperature of the first battery or the second battery is greater than 45 DEG C, if it is greater than 45 DEG C, then being preferably that battery is cooling provides cooling power, and controller control compressor 1 is run according to maximum refrigeration work consumption P, and battery is cold But the cooling power of branch 4 is Pz, and the cooling power of the cooling branch 3 of car is equal to P-Pz.
If it is determined that battery temperature is not more than 45 DEG C, and vehicle interior temperature is also not up to set temperature, then is preferably that car mentions For cooling power, compressor 1 is run according to maximum refrigeration work consumption P, and the cooling power of the cooling branch of car is P4, the cooling branch of battery The cooling power on road is equal to P-P4.
If vehicle interior temperature has reached set temperature, preferentially meet the cooling power of battery.The cooling branch of battery Cooling power is Pz.
The temperature of first battery and the second battery adjust actual power and be Pf, when Pz > Pf, the power for needing to adjust For Pc (Pc=Pz-Pf).If Pz+P4+Pc≤P, the refrigeration work consumption that compressor needs to increase is Pc, increases the second expansion The aperture of valve improves the revolving speed of pump.It is handled as follows simultaneously:
If P11-P21=Pc1, P12-P22=Pc2, P11 > P21, P12 > P22:
When Pc1 is greater than the set value, controls positive pump and open, reversing pump is closed, so that the cooling power of the first battery increases Greatly.When Pc2 is greater than the set value, control reversing pump is opened, and forward direction pump is closed, so that the cooling power of the second battery increases.When When Pc1 > Pc2, controls positive pump and open, reversing pump is closed, so that the cooling power of the first battery increases.As Pc1≤Pc2 When, control reversing pump is opened, and forward direction pump is closed, so that the cooling power of the second battery increases.
Also, when the temperature T61 of the first battery is greater than the temperature T62 of the second battery, controls positive pump and open, reversing pump It closes, so that the cooling power of the first battery increases.When the temperature T61 of the first battery is less than or equal to the temperature T62 of the second battery When, control reversing pump is opened, and forward direction pump is closed, so that the cooling power of battery increases.
If P21-P11=Pc1, P22-P12=Pc2, P11≤P21, P12≤P22 then can be according to following processing:
When Pc1 is greater than the set value, controls positive pump and close, reversing pump is opened, so that the cooling power of the first battery subtracts It is few.When Pc2 is greater than the set value, control reversing pump is closed, and forward direction pump is opened, so that the cooling power of the second battery is reduced.When When Pc1 > Pc2, controls positive pump and close, reversing pump is opened, so that the cooling power of the first battery is reduced.As Pc1≤Pc2 When, control reversing pump is closed, and forward direction pump is opened, so that the cooling power of the second battery is reduced.
Also, when the temperature T61 of the first battery is greater than the temperature T62 of the second battery, controls positive pump and open, reversing pump It closes, so that the cooling power of the first battery increases.When the temperature T61 of the first battery is less than or equal to the temperature T62 of the second battery When, control reversing pump is opened, and forward direction pump is closed, so that the cooling power of battery increases.
Alternatively, it is also possible to be, in the starting of the refrigerating function of the first battery and the second battery, if the temperature of the first battery Higher than the temperature of the second battery, and difference is more than preset value, then controls positive pump work, so that coolant liquid firstly flows through the first electricity Pond again passes through the second battery, so that the first battery be made to complete to cool down as early as possible.And if the temperature of the second battery is higher than the first battery Temperature, and difference be more than preset value, then control reversed pump work, so that coolant liquid firstly flows through the second battery, again pass through first Battery, so that the second battery be made to complete to cool down as early as possible.As a result, by change coolant liquid flow direction, it is possible to reduce the first battery and The temperature difference of second battery.
And when the refrigerating function and heating function of the first battery and the second battery all do not start, if the first battery and The temperature difference of second battery is more than preset value, then can control positive pump or reversed pump startup, so that in the cooling branch of battery Coolant flow, thus the temperature of balanced first battery and the second battery.
The temperature control method of vehicle according to an embodiment of the present invention obtains the temperature regulatory demand power of battery first, The temperature for obtaining battery again adjusts actual power, finally adjusts actual power, interior temperature according to temperature regulatory demand power, temperature Degree and air-conditioning set temperature are adjusted the aperture of interior cooling branch and the cooling branch of battery.As a result, this method by pair The aperture of the cooling branch of car and the cooling branch of battery is adjusted, both can on-vehicle battery when the temperature is excessively high or it is too low when Temperature is quickly adjusted, the temperature of on-vehicle battery is made to maintain preset range, avoids occurring to influence vehicle mounted electric due to temperature The case where pond performance, can also make vehicle interior temperature meet demand in the case where the temperature of battery is met the requirements.
When battery, refrigeration branch, interior cooling branch and the cooling branch of battery are multiple, the temperature of on-vehicle battery is adjusted System includes: multiple refrigeration branches, multiple interior cooling branches, the cooling branch of multiple batteries and battery temperature adjustment module.
Wherein, each refrigeration branch includes compressor 1, the condenser being connected with compressor 12.Multiple interior cooling branches It is connected respectively with multiple refrigeration branches.Battery temperature adjustment module 5 is connected with the cooling branch of battery, needs for obtaining temperature adjusting It asks power P 1 and temperature to adjust actual power P2, and obtains the regional temperature Tq and air-conditioning set temperature of multiple regions in vehicle Ts, and actual power P2, multiple regions temperature Tq and air-conditioning set temperature are adjusted according to temperature regulatory demand power P 1, temperature Ts is adjusted the aperture of multiple interior cooling branches, the cooling branch of multiple batteries and multiple refrigeration branches.
Wherein, in an embodiment of the present invention, battery can be with battery pack or battery modules.The cooling branch of each battery is corresponding simultaneously Connection or concatenated multiple batteries.
Further, according to one embodiment of present invention, battery temperature adjustment module 5 is according to institute's temperature regulatory demand function Rate P1, temperature adjust actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts in object time t to multiple The aperture of the cooling branch of car, the cooling branch of multiple batteries and multiple refrigeration branches is adjusted, to reach target temperature.
For example, as shown in Figure 19-20, with refrigeration branch, the cooling branch of battery, interior cooling branch and battery for two For a, battery is respectively the first battery 61 and the second battery 62, and refrigeration branch is respectively the first refrigeration branch 11 and the second system Cold branch 12, the cooling branch of battery are respectively the cooling branch 401 of the first battery and the cooling branch 402 of the second battery, and car is cooling Branch-path is respectively the first interior cooling branch 301 and the second interior cooling branch 302.Figure 19A and Figure 19B is battery series connection Connection, Figure 20 are connected in parallel for battery.When the temperature of the first battery 61 and/or the second battery 62 is excessively high/too low, need to One battery 61 and/or the second battery 62 carry out temperature adjusting.Battery temperature adjustment module 5 obtains 1 He of temperature regulatory demand power P Temperature adjusts actual power P2, and the aperture of the cooling branches of multiple batteries is adjusted according to P1 and P2, with the cooling power of regulating cell, And battery temperature adjustment module 5 obtains multiple regions temperature Tq and air-conditioning set temperature Ts, and controls each electricity according to Tq and Ts Pond cool down branch aperture, for example, if the Tq higher in some region and in the Tq in other regions differ larger, battery temperature tune The aperture for saving the cooling branch of car that module 5 controls the cooling region increases, while controlling opening for the cooling branch of corresponding battery Degree reduces, meanwhile, the cooling power to guarantee battery is constant, and battery temperature adjustment module 5 controls the cooling branch of another car Aperture reduce, while the aperture for controlling the cooling branch of corresponding battery increases.The system is according to the reality of each battery as a result, Multiple regions temperature and air-conditioning set temperature in state and compartment, are allocated the refrigerating capacity of battery and the compartment region Nei Ge, Temperature can be not only adjusted when battery temperature is excessively high or when too low, the temperature of battery is made to maintain preset range, It can be with the temperature in the region balanced compartment Nei Ge.
It is appreciated that the refrigeration work consumption of battery temperature adjustment module 5 is provided by on-board air conditioner, shared with interior refrigeration system Refrigerating capacity so as to reduce the volume of humidity control system, and keeps the distribution of coolant rate more flexible.
According to one embodiment of present invention, the cooling branch of battery may include heat exchanger 41, heat exchanger 41 and battery temperature Adjustment module 5 is spent to be connected.Heat exchanger 41 may include first pipe and second pipe, second pipe and battery temperature adjustment module 5 are connected, and first pipe is connected with compressor 1, wherein first pipe and second pipe is mutually independent closes on setting.Battery Temperature adjustment module 5 includes: the flow path (not specifically illustrated in figure) of regulating cell temperature, and flow path is arranged among battery.Connection Pump 51, media Containers 52, heater 53 and controller (not specifically illustrated in figure) between flow path and heat exchanger 41.Its In, controller obtains the temperature regulatory demand power P 1 of battery and the temperature of battery adjusts actual power P2, and according to temperature tune Section demand power P1 and temperature adjust actual power P2 and the temperature of battery are adjusted.The cooling branch of car may include: to steam Send out device 31, the first expansion valve 32 and the first electronic valve 33.The cooling branch 4 of battery can also include the second expansion valve 42 and the second electricity Sub- valve 43.
As shown in figure 20, when battery is multiple in parallel, valve 58 is additionally provided at the path inlet of each battery.Control Device can control the coolant rate for flowing into each battery respectively according to each battery corresponding P1 and P2 by control valve 58, So as to accurately control heating power/refrigeration work consumption of each battery.
According to one embodiment of present invention, as shown in Figure 19-20, when battery be it is multiple, and flow path be connected in series, it is more A battery corresponds to the pump of the coolant rate of multiple regulating cells, and the pump is two-way pump.
As shown in Figure 19-20, by battery be 2 for, when battery be 2 (the first battery 61 and the second battery 62), and When series connection, pump corresponds to 2, and two pump one is positive pump 511, and one is reversing pump 522.
As shown in Figure 19 A, when forward direction 511 starting of pump, the flow direction of coolant liquid in second pipe are as follows: media Containers Positive 511-the first the 61-the second battery of the 55-the first battery of temperature sensor of pump of 52-41-heaters of heat exchanger 53-62- 56-flow sensor of second temperature sensor, 57-media Containers 52.As shown in Figure 19 B, when reversing pump 522 starts, second The flow direction of coolant liquid in pipeline are as follows: 52-flow sensor of media Containers the 56-the second battery of 57-second temperature sensor 62-the first 41-media Containers of battery the 61-the first temperature sensor 55-reversing pump, 512-heater, 53-heat exchanger 52.
In addition, in the starting of the refrigerating function of the first battery 61 and the second battery 62, if the temperature of the first battery 61 is high In the temperature of the second battery 62, and difference is more than preset value, then positive 511 work of pump of controller control, so that coolant liquid first flows The first battery 61 is crossed, the second battery 62 is again passed through, so that the first battery 61 be made to complete cooling as early as possible.And if the second battery 62 Temperature be higher than the first battery 61 temperature, and difference be more than preset value, then controller control reversing pump 512 work so that cold But liquid firstly flows through the second battery 62, again passes through the first battery 61, so that the second battery 62 be made to complete cooling as early as possible.Pass through as a result, Change the flow direction of coolant liquid, it is possible to reduce the temperature difference of the first battery 61 and the second battery 62.And in the first battery 61 and second When the refrigerating function and heating function of battery 62 all do not start, if the temperature difference of the first battery 61 and the second battery 62 is super Cross preset value, then controller can control positive 511 starting of pump, so that the coolant flow in the cooling branch 4 of battery, thus Weigh the temperature of the first battery 61 and the second battery 62.
Illustrate how that obtaining temperature regulatory demand power P 1 and temperature adjusts actual power below with reference to specific embodiment P2。
According to one embodiment of present invention, controller can be used for obtaining respectively when each battery opening temperature is adjusted First parameter, and the first temperature regulatory demand power of each battery is generated according to the first parameter, and obtain each electricity respectively Second parameter of the pond when temperature is adjusted, and the second temperature regulatory demand power of each battery is generated according to the second parameter, and Each electricity is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of each battery and each battery The temperature regulatory demand power P 1 in pond.
Further, according to one embodiment of present invention, the first parameter is initial temperature when battery opening temperature is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature, controller obtain initial temperature and target temperature The first temperature difference Δ T between degree1, and according to the first temperature difference Δ T1The first temperature regulatory demand function is generated with object time t Rate.
Further, controller generates the first temperature regulatory demand power by following formula (1):
ΔT1* (1) C*M/t,
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is battery 6 Specific heat capacity, M are the quality of battery.
Second parameter is the average current I of each battery within a preset time, and controller generates the by following formula (2) Two temperature regulatory demand power:
I2* R, (2),
Wherein, I is average current, and R is the internal resistance of battery.
When being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C* M/t-I2*R。
According to one embodiment of present invention, controller is respectively according to first temperature sensor in circuit where each battery The outlet temperature that the inlet temperature and second temperature sensor 56 of 55 detections detect generates the second temperature difference Δ T of each battery2, And according to the second temperature difference Δ T of each battery2The temperature that the flow velocity v detected with flow sensor 57 generates each battery is adjusted Actual power P2.
Further, according to one embodiment of present invention, the practical function of temperature adjusting is generated according to by following formula (3) Rate P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is the cross of flow path Sectional area.
Specifically, as shown in Figure 19-20, after powering on, controller judges whether vehicle needs to carry out temperature adjusting, if Judge that vehicle needs temperature to adjust, then opening temperature regulatory function, and send slow-speed of revolution information to pump 51, pumps to default revolving speed (such as slow-speed of revolution) starts to work.The initial temperature (i.e. Current Temperatures) of the available each battery of controller, target temperature and from Initial temperature reaches the object time t of target temperature, and wherein target temperature and object time t can be carried out pre- according to the actual situation And if calculating the first temperature regulatory demand power of each battery according to formula (1).Meanwhile controller is obtained and is obtained respectively often The average current I of a battery within a preset time, and each battery second temperature regulatory demand power is calculated according to formula (2). Then, controller is respectively according to the first temperature regulatory demand power of each battery and second temperature regulatory demand power calculation temperature Spend regulatory demand power P 1.Also, as shown in Figure 19-20, when battery is connected in series, controller obtains the first temperature sensor 55 and second temperature sensor 56 detect temperature information, and respectively obtain flow sensor detection flow rate information, according to formula (3) temperature for calculating battery adjusts actual power P2.As shown in figure 20, when battery is connected in parallel, controller obtains respectively The first temperature sensor 55 and second temperature sensor 56 that each battery is correspondingly arranged detect temperature information, and obtain stream respectively The flow rate information that fast sensor 57 detects adjusts actual power P2 according to the temperature that formula (3) calculates separately out each battery 6.
Below in conjunction with the description of specifically embodiment how according to temperature regulatory demand power P 1, temperature adjusting actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts are to multiple interior cooling branches of cooling branch (30 and 30) multiple batteries The aperture of (401 and 402) and multiple refrigeration branches (11 and 12) is adjusted.
According to one embodiment of present invention, controller is also used to, according to the temperature regulatory demand power P 1 of multiple batteries Generate total moisture content regulatory demand power P z, and judge total moisture content regulatory demand power P z whether the maximum refrigeration function with on-board air conditioner Rate P matching, wherein if it does, then controller is battery according to the total moisture content regulatory demand power P 1 of the battery of multiple parallel connections It is cooled down；If it does not match, temperature of the controller according to the maximum refrigeration work consumption P of compressor and the cooling branch of multiple batteries Regulatory demand power P 1 is that battery is cooled down.
Specifically, as shown in figure 20, when battery refrigerating function is opened, controller can be according to the temperature tune of each battery Section demand power P1 calculates the total moisture content regulatory demand power P z of entire humidity control system, i.e., by the temperature tune of each battery Total moisture content regulatory demand power P z can be obtained in section demand power P1 addition.Then judged according to total moisture content regulatory demand power P z PZWhether matched with the maximum refrigeration work consumption P of on-board air conditioner, that is, judge whether Pz is less than or equal to P, if it is, controller root Each battery is cooled down by control valve 58 according to the temperature regulatory demand power P 1 of each battery.And if PZWith it is vehicle-mounted The maximum refrigeration work consumption P of air-conditioning is mismatched, i.e. Pz is greater than P, then controller is according to the maximum refrigeration work consumption P of air-conditioning and each battery Temperature regulatory demand power P 1, coolant rate distribution is carried out by the aperture of control valve 58 in proportion, so as to Maximal efficiency makes each battery complete cooling.
According to one embodiment of present invention, multiple refrigeration branches respectively correspond multiple air outlets, and multiple regions temperature is The temperature of multiple air outlets.
For example, as shown in figure 21,4 air outlets, respectively air outlet 1- air outlet 4 can be set in compartment.It is logical It crosses detection air port temperature Tc and detects corresponding regional temperature Tq.Assuming that air outlet 1 and air outlet 2 are by the first refrigeration branch 11 Refrigeration work consumption is provided, air port 3 and air outlet 4 is set out by the second refrigeration branch 12 and refrigeration work consumption is provided.
According to one embodiment of present invention, controller is also used to detect the temperature of multiple batteries, and in multiple electricity in parallel When the temperature of any of pond battery is greater than the first temperature threshold, control humidity control system enters refrigerating mode, and more When the temperature of any of a battery battery is less than second temperature threshold value, control humidity control system enters heating mode.Wherein, First temperature threshold and second temperature threshold value can be preset according to the actual situation, for example, the first temperature threshold can be 40 DEG C, second temperature threshold value can be 0 DEG C.
Specifically, after vehicle powers on, the temperature of each battery of controller real-time detection, and judged.If wherein certain The temperature of a battery is higher than 40 DEG C, illustrates that the temperature of the battery at this time is excessively high, to avoid high temperature from generating shadow to the performance of the battery It rings, needs to carry out the battery cooling processing, controller control humidity control system enters refrigerating mode, and concurrent power transmission pond is cooling Function starts information to air-conditioning system, and the second electronic valve 43 of control is opened so that coolant liquid and battery carry out heat exchange with Reduce the temperature of the battery.
And if the temperature of some battery is lower than 0 DEG C, illustrate that 6 temperature of battery is too low at this time, to avoid low temperature to the electricity The performance in pond has an impact, and needs to carry out the battery heating treatment, and controller control humidity control system enters heating mode, The closing of the second electronic valve 43 is controlled, and controls the unlatching of heater 53, to provide heating power for humidity control system.
According to one embodiment of present invention, when for refrigerating mode, controller is also used to, in the temperature of the cooling branch of battery When spending regulatory demand power P 1 greater than temperature adjusting actual power P2, judge whether battery temperature is greater than third temperature threshold, In, if battery temperature is greater than third temperature threshold, controller reduces the aperture of multiple interior cooling branches, and improves multiple The aperture of the cooling branch of battery, wherein the aperture of the cooling branch of multiple batteries passes through corresponding valve (i.e. the second expansion valve 42) It controls respectively, third temperature threshold is greater than the first temperature threshold, such as third temperature threshold can be 45 DEG C.
Specifically, when for refrigerating mode, if P1 is greater than P2, controller judges whether the temperature of battery is greater than 45 ℃.If the temperature of any one battery is greater than 45 DEG C, illustrate that the temperature of present battery is excessively high, controller reduces by the first expansion valve 32 Aperture, to reduce the coolant rate of interior cooling branch, while increasing the aperture of the second expansion valve 42, it is cold to increase battery But the coolant rate of branch.As a result, by adjusting the refrigerating capacity distribution of interior cooling branch and the cooling branch of battery, Ke Yi The temperature for completing battery when battery temperature is excessively high within the object time is adjusted.
According to one embodiment of present invention, be refrigerating mode when, controller be also used to some battery temperature adjust When the temperature that demand power P1 is greater than battery adjusts actual power P2, the temperature regulatory demand power P 1 and temperature tune of battery are obtained The difference power between actual power P2 is saved, and increases the power for being used for the compressor 1 of cooling of battery according to difference power, or adjust Section increases the coolant rate in the loop branches circuit of battery, to increase the cooling power of battery, or the temperature in some battery The temperature adjusting actual power P2 that regulatory demand power P 1 is less than or equal to battery is spent, reduces the power of compressor or keeps compression The power of machine is constant, or adjusts the coolant rate for reducing the loop branches circuit of battery, to reduce the cooling power of battery.
Specifically, when work in refrigerating mode, if battery be it is multiple, controller obtain respectively each battery P1 and P2, and judged.If wherein the P1 of some battery is greater than P2, illustrate if according to current refrigeration work consumption or cooling Flow quantity can not complete the cooling of the battery within the object time, so, controller obtains between the P1 of the battery and P2 Difference power, and according to the power of difference power increase compressor 1, or increase the cooling liquid stream in the loop branches circuit of the battery Amount, to increase the cooling power of the battery, wherein the difference power of P1 and P2 is bigger, the cooling of the power and the battery of compressor 1 Flow quantity increase is more, so that the temperature of the battery is reduced to target temperature in preset time t.And if wherein some battery P1 be less than or equal to P2, the power of compressor 1 can be kept constant or it is appropriate reduce compressor 1 power, or reduce should The coolant rate in the loop branches circuit of battery, reduces the cooling power of battery.When the temperature of all batteries is lower than 35 DEG C, Then battery is cooling completes, and controller sends the information of closing temperature regulatory function by CAN communication to on-board air conditioner, and controls the Two electronic valves 43 are closed.If after humidity control system enters the refrigerating mode long period, such as after 1 hour, still there is battery Temperature is higher than 35 DEG C, then controller suitably increases the power of compressor again, so that the battery is completed to cool down as early as possible.
According to one embodiment of present invention, controller is also used to be less than third temperature threshold in the temperature of some battery, And vehicle interior temperature reduces the aperture of multiple interior cooling branches, and it is cooling to improve multiple batteries when being equal to air-conditioning set temperature Ts The aperture of branch.
Specifically, when for refrigerating mode, if the temperature of each battery is both less than 45 DEG C, controller judges vehicle interior temperature Whether air-conditioning set temperature Ts is reached.If reached, controller reduces the aperture of the first expansion valve 32, and increases the second expansion The aperture of valve 42 reduces the coolant rate of interior cooling branch to increase the coolant rate of the cooling branch of battery, complete as early as possible At the cooling of battery.And if vehicle interior temperature does not reach air-conditioning set temperature Ts, it is preferential to meet interior refrigeration demand, control Device processed increases the aperture of the first expansion valve 32, and reduces the aperture of the second expansion valve 42.
In addition, also being handled by different level to having done to battery temperature, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 ℃.When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature is reduced to 35 DEG C, then battery is cooling is completed. When battery temperature reaches 45 DEG C, preferentially meet battery cooling requirement.In addition, temperature regulatory demand power P 1 is adjusted greater than temperature When actual power P2, if battery temperature is no more than 45 DEG C, still preferential interior refrigeration demand, if interior refrigeration function Rate is sufficient, and reaches balance, then controller increases the aperture of the cooling branch of battery, to increase the cooling power of battery.And If temperature regulatory demand power P 1 is less than or equal to temperature adjusting actual power P2, it can preferentially meet interior refrigeration demand.
According to one embodiment of present invention, controller is also used to obtain the temperature difference between multiple regions temperature, and When temperature difference is greater than four temperature thresholds, by the aperture of the corresponding interior cooling branch of refrigeration branch where the high air outlet of temperature Increase, and the aperture of the cooling branch of the corresponding battery of refrigeration branch where the high air outlet of temperature is reduced.Wherein, the 4th temperature Threshold value can be preset according to the actual situation, such as can be 3 DEG C.
Further, according to one embodiment of present invention, controller is also used to refrigeration where the low air outlet of temperature The aperture of the corresponding interior cooling branch of branch reduces, and the corresponding battery of refrigeration branch where the low air outlet of temperature is cooling The aperture of branch improves.
Specifically, it in battery cooling procedure, if car needs to open air-conditioning, needs to the environment temperature in compartment It is monitored and controls, so that interior environment temperature everywhere is kept in balance, while being able to satisfy the cooling requirement of battery again.Such as figure Shown in 21, when detecting that regional temperature Tq is than near zone temperature Tq at air outlet 3 and air outlet 4 at air outlet 1 and air outlet 2 At high 3 DEG C or more, the aperture of the first expansion valve 32 in the interior cooling branch 301 of control first increases, while controlling the first electricity The aperture of the second expansion valve 42 in the cooling branch 401 in pond reduces, so that the cooling power in the first interior cooling branch 301 increases Add.The aperture that controller also controls the first expansion valve 32 in the second interior cooling branch 302 reduces, the cooling branch of the second battery The aperture of the second expansion valve 42 in 402 increases, so that the cooling power in the second interior cooling branch 302 is smaller.As a result, may be used So that the cooling power of the first battery cooling 301 and the cooling branch 302 of the second battery is constant, while making interior outlet air everywhere again Mouth near zone temperature is balanced.When on-board air conditioner detects air outlet 1, near zone temperature Tq and air outlet 3 at air outlet 2, Near zone temperature Tq difference is when within 3 DEG C at air outlet 4, the interior cooling branch 301 of controller control first and the second vehicle 32 aperture of the first expansion valve in interior cooling branch 302 is identical, to guarantee that the first interior cooling branch 301 and second is interior cooling The cooling power of branch 302 is identical.
According to one embodiment of present invention, when for heating mode, temperature regulatory demand of the controller in some battery When the temperature that power P 1 is greater than battery adjusts actual power P2, the temperature regulatory demand power P 1 and temperature for obtaining battery are adjusted Difference power between actual power P2, and the power for heating the heater of battery is increased according to difference power, or adjust and increase Add the coolant rate in the loop branches circuit of the battery, to increase the heating power of the battery, and in some battery Temperature regulatory demand power P 1 be less than or equal to battery temperature adjust actual power P2 when, reduce power or the guarantor of heater The power for holding heater is constant, or adjusts the coolant rate for reducing the loop branches circuit of battery, to reduce adding for battery Thermal power.
Specifically, when for heating mode, controller obtains the P1 and P2 of each battery respectively, and is judged.If Wherein the P1 of some battery is greater than P2, illustrates if according to current heating power or coolant rate, can not be in target The heating of the battery is completed in time, so, controller obtains the difference power between the P1 of the battery and P2, and according to difference power Increase the power for heating the heater 53 of battery, or the revolving speed by adjusting corresponding pump 51 improves, to increase the electricity The coolant rate in the loop branches circuit in pond, so that the battery can complete temperature adjusting in object time t.Wherein, P1 Bigger with the difference of P2, the power of heater 53 is increased more.And if the P1 of some battery is less than or equal to P2, controller The power of heater 53 can suitably be reduced, to save electric energy, or the revolving speed by adjusting corresponding pump 51 is reduced to reduce and is somebody's turn to do The coolant rate in the loop branches circuit of battery to reduce heating power, or keeps the power of heater 53 constant.Work as institute There is the temperature of battery to be higher than preset temperature, such as at 10 DEG C, battery heating is completed, and controller is by CAN communication to on-board air conditioner The information of closing temperature regulatory function is sent, and controls the closing of heater 53.If humidity control system enter heating mode compared with After long-time, such as after 1 hour, still there is the temperature of battery lower than 10 DEG C, then controller suitably increases the power of heater 53 again, So that the battery is completed to heat up as early as possible.
According to one embodiment of present invention, controller is also used to small in the temperature regulatory demand power P 1 of some battery When corresponding temperature adjusts actual power P2, the revolving speed of pump 51 is reduced, and in the temperature regulatory demand power P 1 of some battery When adjusting actual power P2 greater than corresponding temperature, the revolving speed of pump 51 is improved.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of some battery is less than The revolving speed of P2, the corresponding pump 51 of controller control reduce, to save electric energy.And if the P1 of some battery 6 is greater than P2, controller In addition to the power for controlling corresponding heater 53 or compressor 1 increases or the coolant rate in battery place circuit increases, also The revolving speed of control pump 51 improves, and can increase the coolant liquid quality that cooling flowing path cross section is flowed through in the unit time, to improve The temperature of the battery adjusts actual power P2, to realize that temperature is adjusted in object time t.
According to one embodiment of present invention, as shown in figure 20, multiple batteries are connected in parallel, and controller is also used to, for When refrigerating mode, when the temperature difference between battery is more than setting value, increase the cooling power of the higher battery of temperature；For heating When mode, when the temperature difference between battery is more than setting value, increase the heating power of the lower battery of temperature.Wherein, it sets Value can be 3 DEG C.
Specifically, as shown in figure 20, when battery is connected in parallel, valve is additionally provided at the path inlet of each battery 58, when for refrigerating mode, when the temperature difference between battery is more than 3 DEG C, then controller is by increasing the higher battery institute of temperature The cooling branch of battery in valve 58 aperture, to increase the cooling power of the higher battery of temperature.When for heating mode, when The valve in the cooling branch of battery when temperature difference between battery is more than 3 DEG C, then where controller increases the lower battery of temperature 58 aperture, to increase the heating power of the lower battery of temperature.
According to one embodiment of present invention, as shown in figure 20, multiple batteries are connected in parallel, when for refrigerating mode, control Device processed individually controls the coolant rate of each branch flow passage, and can be adjusted according to the temperature regulatory demand power of each battery The coolant rate of each battery pack flow path, so that the real temperature of each battery adjusts actual power and temperature requirements power phase Deng.
Specifically, as shown in figure 20, when for refrigerating mode, controller can pass through the aperture of the second expansion valve 42 of control The coolant rate of the cooling branch 401 of the first battery and the cooling branch 402 of the second battery is controlled respectively, and can pass through control valve The aperture of door 58 controls the coolant rate for flowing into the first battery 61 and 62 flow path of the second battery respectively, to make each battery Real temperature adjusts actual power P1 and temperature requirements power P 2 is equal, is adjusted with completing the temperature of battery as early as possible.
According to one embodiment of present invention, as shown in Figure 19-20, when battery be it is multiple, and flow path be connected in series, it is more A battery corresponds to the pump of the coolant rate of multiple regulating cells, and pumping is two-way pump.
To make those skilled in the art be more clearly understood that the present invention, the temperature of on-vehicle battery is described below with reference to specific example Spend the course of work of regulating system.
The main distinction of Figure 19 and Figure 14 A is to increase a compression mechanism cold loop, while increasing car Power regulation problem between the temperature equalization and compressor of air-conditioner air outlet.Difference is only listed below, remaining does not do wadding and states.
As shown in figure 19, when battery be it is multiple, when humidity control system enters refrigerating mode, controller obtains often respectively The P1 of a battery 6, the temperature of each battery adjust the maximum refrigeration work consumption P of actual power P2 and single compressor, and will be each The P1 of battery is added the total moisture content regulatory demand power P z that can calculate entire humidity control system, by the temperature tune of each battery Section actual power P2 is added to obtain total moisture content adjusting actual power Pf, and the maximum refrigeration work consumption addition of each compressor can be calculated The sum of maximum refrigeration work consumption of all compressors P5 out.P51 is the maximum refrigeration work consumption of compressor 11, P52 be compressor 12 most Big refrigeration work consumption, P5 are the sum of the maximum refrigeration work consumption of all compressors, P5=P51+P52.Wherein, the temperature of the first battery 61 Regulatory demand power is P11, and the temperature regulatory demand power of the second battery 62 is P12.The temperature of first battery 61 adjusts practical Power is P21, and it is P22 that the temperature of the second battery 62, which adjusts actual power,.
If Pz≤P51, only needs to control a compressor 1 and work, refrigeration work consumption is provided, also can control two Compressor 1 works together.If P51 < Pz≤P5 needs two compressors to work together, the initial refrigeration of each compressor Power can be Pz/2, or other power combination forms, so that the sum of refrigeration work consumption of 2 compressors is Pz.If Pz > P5 then needs two compressors to work together, and each compressor is run according to maximum refrigeration work consumption.The temperature of the cooling branch of car Regulatory demand power is P4, i.e. P4 is the power that vehicle interior temperature is adjusted to set temperature needs.
Cooling in the car and battery is cooling when opening simultaneously, it is assumed that air outlet 1,2 region of air outlet temperature be T51, out Air port 3,4 regional temperature of air outlet are T52.
If T51-T52 >=Tc, Tc are 3 DEG C, then it is handled as follows:
If Pz+P4≤P5, the refrigeration work consumption for controlling the first compressor 11 is improved, or control the first compressor 11 system The expansion valve opening of battery cooling circuit reduces in cold loop, and the expansion valve opening for controlling interior cooling circuit increases, Huo Zhetong When control the expansion valve of battery cooling circuit in 12 refrigerating circuit of the second compressor and increase, control the expansion of interior cooling circuit Valve opening is reduced, so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature It is balanced.
If Pz+P4 > P5, control the first compressor 11 and the second compressor 12 with the operation of maximum refrigeration work consumption, together When control the expansion valve opening of battery cooling circuit in 11 refrigerating circuit of the first compressor and reduce, control the swollen of interior cooling circuit Swollen valve opening increases, or controls the expansion valve increase of the battery cooling circuit in 12 refrigerating circuit of the second compressor, control simultaneously The expansion valve opening for making interior cooling circuit is reduced, so that T51 temperature accelerates decline, while meeting the cooling power need of battery again It asks, realizes environment inside car temperature equalization.
If T51-T52 >=Tc, Tc are 3 DEG C, can also be handled as follows:
The closing of battery cooling circuit in 11 refrigerating circuit of the first compressor is controlled, the expansion valve of interior cooling circuit is controlled Aperture increases, so that all refrigeration work consumptions of the first compressor 11 are all used for interior cooling.The second compressor 12 system is controlled simultaneously The expansion valve of battery cooling circuit in cold loop increases, and the expansion valve opening for controlling interior cooling circuit is reduced, and increases to electricity Pond cooling power so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature It is balanced.
The main distinction of Figure 20 and Fig. 9 is to increase a compression mechanism cold loop, while increasing interior sky Recall the power regulation problem between the temperature equalization in air port and compressor.Difference is only listed below, remaining does not do wadding and states.
As shown in figure 20, when battery be it is multiple, when humidity control system enters refrigerating mode, controller obtains often respectively The P1 of a battery 6, the temperature of each battery adjust the maximum refrigeration work consumption P of actual power P2 and single compressor, and will be each The P1 of battery is added the total moisture content regulatory demand power P z that can calculate entire humidity control system, by the temperature tune of each battery Section actual power P2 is added to obtain total moisture content adjusting actual power Pf, and the maximum refrigeration work consumption addition of each compressor can be calculated The sum of maximum refrigeration work consumption of all compressors P5 out.P51 is the maximum refrigeration work consumption of compressor 11, P52 be compressor 12 most Big refrigeration work consumption, P5 are the sum of the maximum refrigeration work consumption of all compressors, P5=P51+P52.Wherein, the temperature of the first battery 61 Degree regulatory demand power is P11, and the temperature regulatory demand power of the second battery 62 is P12.The temperature of first battery 61 adjusts real Border power is P21, and it is P22 that the temperature of the second battery 62, which adjusts actual power,.
If Pz≤P51, only needs to control a compressor 1 and work, refrigeration work consumption is provided, also can control two Compressor 1 works together.If P51 < Pz≤P5 needs two compressors to work together, the initial refrigeration of each compressor Power can be Pz/2, or other power combination forms, so that the sum of refrigeration work consumption of 2 compressors is Pz.If Pz > P5 then needs two compressors to work together, and each compressor is run according to maximum refrigeration work consumption.The temperature of the cooling branch of car Regulatory demand power is P4, i.e. P4 is the power that vehicle interior temperature is adjusted to set temperature needs.
Cooling in the car and battery is cooling when opening simultaneously, it is assumed that air outlet 1,2 region of air outlet temperature be T51, out Air port 3,4 regional temperature of air outlet are T52.
If T51-T52 >=Tc, Tc are 3 DEG C, then it is handled as follows:
If Pz+P4≤P5, the refrigeration work consumption for controlling the first compressor 11 is improved, or control the first compressor 11 system The expansion valve opening of battery cooling circuit reduces in cold loop, and the expansion valve opening for controlling interior cooling circuit increases, Huo Zhetong When control the expansion valve of battery cooling circuit in 12 refrigerating circuit of the second compressor and increase, control the expansion of interior cooling circuit Valve opening is reduced, so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature It is balanced.
If Pz+P4 > P5, control the first compressor 11 and the second compressor 12 with the operation of maximum refrigeration work consumption, together When control the expansion valve opening of battery cooling circuit in 11 refrigerating circuit of the first compressor and reduce, control the swollen of interior cooling circuit Swollen valve opening increases, or controls the expansion valve increase of the battery cooling circuit in 12 refrigerating circuit of the second compressor, control simultaneously The expansion valve opening for making interior cooling circuit is reduced, so that T51 temperature accelerates decline, while meeting the cooling power need of battery again It asks, realizes environment inside car temperature equalization.
If T51-T52 >=Tc, Tc are 3 DEG C, can also be handled as follows:
The closing of battery cooling circuit in 11 refrigerating circuit of the first compressor is controlled, the expansion valve of interior cooling circuit is controlled Aperture increases, so that all refrigeration work consumptions of the first compressor 11 are all used for interior cooling.The second compressor 12 system is controlled simultaneously The expansion valve of battery cooling circuit in cold loop increases, and the expansion valve opening for controlling interior cooling circuit is reduced, and increases to electricity Pond cooling power so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature It is balanced.The humidity control system of on-vehicle battery according to an embodiment of the present invention, can be according to the virtual condition and vehicle of each battery Multiple regions temperature and air-conditioning set temperature in compartment, are allocated the refrigerating capacity of battery and the compartment region Nei Ge, not only can be with Temperature is adjusted when battery temperature is excessively high or when too low, the temperature of battery is made to maintain preset range, it can also be The temperature in the weighing apparatus region compartment Nei Ge.
The humidity control system of on-vehicle battery includes the cooling branch of multiple batteries, multiple interior cooling branches and multiple refrigeration When branch, as shown in figure 22, the temperature control method of on-vehicle battery the following steps are included:
S1 " ', the temperature regulatory demand power P 1 and temperature for obtaining multiple batteries in the cooling branch of multiple batteries respectively are adjusted Actual power P2.Wherein, the cooling branch of battery is used to carry out temperature adjusting for corresponding battery.
According to one embodiment of present invention, as shown in figure 23, the temperature regulatory demand power of multiple batteries is obtained respectively It specifically includes:
S11 " ' obtains the first parameter when each battery opening temperature is adjusted respectively, and is generated each according to the first parameter First temperature regulatory demand power of battery.
S12 " ' obtains second parameter of each battery when temperature is adjusted, and generates each battery according to the second parameter Second temperature regulatory demand power.
S13 " ' generates electricity according to the first temperature regulatory demand power of each battery and second temperature regulatory demand power The temperature regulatory demand power P 1 of the cooling branch in pond.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature generate first according to the first parameter Temperature regulatory demand power specifically includes: obtaining the first temperature difference Δ T between initial temperature and target temperature1；According to first Temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of battery within a preset time, by following Formula (2) generates second temperature regulatory demand power:
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
When being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C* M/t-I2*R。
According to one embodiment of present invention, as shown in figure 23, the temperature for obtaining multiple batteries adjusts actual power P2 tool Body includes:
S14 " ' is obtained for adjusting the inlet temperature and outlet temperature of the flow path of multiple battery temperatures, and is obtained coolant liquid Flow into the flow velocity v of flow path.
S15 ' generates the second temperature difference Δ of multiple batteries according to the path inlet temperature and outlet temperature of multiple batteries T2。
S16 ', according to the second temperature difference Δ T of multiple batteries2Practical function is adjusted with the flow velocity v temperature for generating multiple batteries Rate P2.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power P 2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is the cross of flow path Sectional area.
S2 " ' obtains the regional temperature Tq and air-conditioning set temperature Ts of multiple regions in vehicle respectively.
S3 " ' adjusts actual power P2, multiple regions temperature Tq and air-conditioning and sets according to temperature regulatory demand power P 1, temperature Determine temperature Ts to be adjusted the aperture of multiple interior cooling branches, the cooling branch of multiple batteries and multiple refrigeration branches.
Further, according to one embodiment of present invention, practical function is adjusted according to temperature regulatory demand power P 1, temperature Rate P2, multiple regional temperature Tq and air-conditioning set temperature Ts are in object time t to multiple interior cooling branches, multiple The aperture of the cooling branch of battery and multiple refrigeration branches is adjusted, to reach target temperature.
As shown in Figure 19-20, the corresponding multiple batteries in parallel or series of the cooling branch of each battery.
Specifically, by taking refrigeration branch, the cooling branch of battery, interior cooling branch and battery are two as an example, battery difference For the first battery and the second battery, refrigeration branch is respectively the first refrigeration branch and the second refrigeration branch, the cooling branch point of battery Not Wei the cooling branch of the first battery and the cooling branch of the second battery, the cooling branch-path of car is respectively the first interior cooling branch With the second interior cooling branch.When the temperature of the first battery and/or the second battery is excessively high/too low, need to the first battery and/ Or second battery carry out temperature adjusting.It obtains temperature regulatory demand power P 1 and temperature adjusts actual power P2, according to P1 and P2 The aperture of the cooling branch of multiple batteries is adjusted, with the cooling power of regulating cell, and acquisition multiple regions temperature Tq and air-conditioning are set Determine temperature Ts, and the cooling branch aperture of each battery controlled according to Tq and Ts, for example, if the Tq higher in some region and in The Tq difference in other regions is larger, then the aperture for controlling the cooling branch of car in the cooling region increases, while controlling corresponding The aperture of the cooling branch of battery reduces, meanwhile, the cooling power to guarantee battery is constant, controls the cooling branch of another car Aperture reduces, while the aperture for controlling the cooling branch of corresponding battery increases.This method is according to the practical shape of each battery as a result, Multiple regions temperature and air-conditioning set temperature in state and compartment, are allocated the refrigerating capacity of battery and the compartment region Nei Ge, no Temperature can be only adjusted when battery temperature is excessively high or when too low, the temperature of battery is made to maintain preset range, also Can the balanced compartment region Nei Ge temperature.
It illustrates how to adjust practical function according to according to temperature regulatory demand power P 1, temperature below in conjunction with specific embodiment Rate P2, multiple regions temperature Tq and air-conditioning set temperature Ts cool down branches to multiple cars, multiple batteries cool down branch and multiple The aperture of refrigeration branch is adjusted.
An implementation according to the present invention, as shown in figure 23, on-vehicle battery are multiple, and interior cooling branch, battery are cold But when branch and refrigeration branch are multiple, the temperature control method of above-mentioned on-vehicle battery can also include:
S31 " ' generates total moisture content regulatory demand power P according to the temperature regulatory demand power P 1 of each batteryZ。
S32 " ' judges total moisture content regulatory demand power PZWhether matched with the maximum refrigeration work consumption P of on-board air conditioner.
S33 " ', if it does, then being that battery is cooled down according to the temperature regulatory demand power of multiple batteries.
S34 ", if it does not match, according to the temperature tune of the maximum refrigeration work consumption P of compressor and the cooling branch of multiple batteries Section demand power P1 is that battery is cooled down.
Specifically, it when battery is multiple in parallel, can be calculated according to the temperature regulatory demand power P 1 of each battery The addition of temperature regulatory demand power P 1 of each battery is by the total moisture content regulatory demand power P z of entire humidity control system Total moisture content regulatory demand power P z can be obtained.Then according to total moisture content regulatory demand power P z judge Pz whether with on-board air conditioner Maximum refrigeration work consumption P matching, that is, judge PZWhether P is less than or equal to, if it is, according to the temperature regulatory demand of each battery Power P 1 cools down each battery by the valve in the cooling branch of control battery.And if the maximum of Pz and on-board air conditioner Refrigeration work consumption P is mismatched, i.e. Pz is greater than P, then according to the temperature regulatory demand function of the maximum refrigeration work consumption P of air-conditioning and each battery Rate P1 carries out coolant rate distribution by the aperture of the valve in the cooling branch of regulating cell, so as to most in proportion Big efficiency makes each battery complete cooling.
According to one embodiment of present invention, the temperature control method of battery can be the following steps are included: detection be multiple The temperature of battery.When the temperature of any of multiple batteries battery is greater than the first temperature threshold, into refrigerating mode.When multiple When the temperature of any of battery battery is less than second temperature threshold value, into heating mode.Wherein, the first temperature threshold and second Temperature threshold can be preset according to the actual situation, for example, the first temperature threshold can be 40 DEG C, second temperature threshold value can be with It is 0 DEG C.
Specifically, after vehicle powers on, the temperature of each battery of real-time detection, and judged.If wherein some battery Temperature be higher than 40 DEG C, illustrate that the temperature of the battery at this time is excessively high, to avoid high temperature from having an impact the performance of the battery, need Cooling processing is carried out to the battery, into refrigerating mode, concurrent power transmission pond refrigerating function starts information to air-conditioning system.And if The temperature of some battery is lower than 0 DEG C, illustrates that the temperature of the battery at this time is too low, to avoid low temperature from generating shadow to the performance of the battery Sound needs to carry out heating treatment to the battery, into heating mode, controls the cooling branch of corresponding battery and closes, and controls and add Hot device is opened, to provide heating power for battery.
According to one embodiment of present invention, as shown in figure 21, multiple refrigeration branches respectively correspond multiple air outlets, described Multiple regions temperature is the temperature of the multiple air outlet.
For example, as shown in figure 21,4 air outlets, respectively air outlet 1- air outlet 4 can be set in compartment.It is logical It crosses detection air port temperature Tc and detects corresponding regional temperature Tq.Assuming that air outlet 1 and air outlet 2 are by the first refrigeration branch 11 Refrigeration work consumption is provided, air port 3 and air outlet 4 is set out by the second refrigeration branch 12 and refrigeration work consumption is provided.
According to one embodiment of present invention, it when for refrigerating mode, is adjusted according to temperature regulatory demand power P 1, temperature Actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts are to multiple interior cooling branches, the cooling branch of multiple batteries It is adjusted, specifically includes with the aperture of multiple refrigeration branches: when the temperature regulatory demand power P 1 of the cooling branch of battery is greater than When temperature adjusts actual power P2, judge whether battery temperature is greater than third temperature threshold.Wherein, third temperature threshold is greater than the One temperature threshold, such as third temperature threshold can be 45 DEG C.If battery temperature is greater than the third temperature threshold, reduce The aperture of multiple interior cooling branches, and improve the aperture of the cooling branch of multiple batteries.Wherein, multiple batteries cool down opening for branch Degree is controlled respectively by corresponding valve.
Specifically, when for refrigerating mode, if P1 is greater than P2, judge whether the temperature of battery is greater than 45 DEG C.If The temperature of any one battery is greater than 45 DEG C, illustrates that the temperature of present battery is excessively high, reduces the aperture of the first expansion valve 32, to reduce The coolant rate of the cooling branch of car, while increasing the aperture of the second expansion valve 42, to increase the cooling of the cooling branch of battery Flow quantity.It, can be excessively high in battery temperature as a result, by adjusting the refrigerating capacity distribution of interior cooling branch and the cooling branch of battery When within the object time complete battery temperature adjust.
According to one embodiment of present invention, it when for refrigerating mode, is adjusted according to temperature regulatory demand power P 1, temperature Actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts are to multiple interior cooling branches, the cooling branch of multiple batteries It is adjusted with the aperture of multiple refrigeration branches, further includes: judge whether the temperature regulatory demand power P 1 of each battery is greater than The temperature of battery adjusts actual power P2；If the temperature that the temperature regulatory demand power P 1 of some battery is greater than battery adjusts real Border power P 2, then the temperature regulatory demand power P 1 and temperature that obtain battery adjust the difference power between actual power P2, and root It states difference power and increases the power for being used for the compressor of cooling of battery, or adjust the cooling for increasing the loop branches circuit of battery Flow quantity, to increase the cooling power of battery；If the temperature regulatory demand power P 1 of some battery is less than or equal to battery Temperature adjusts actual power P2, then reduces the power of compressor or keep the power of compressor constant, or adjust and reduce battery Loop branches circuit coolant rate, to reduce the cooling power of battery.
Specifically, when work in refrigerating mode, if battery be it is multiple, obtain the P1 and P2 of each battery respectively, and Judged.If wherein the P1 of some battery is greater than P2, illustrate if according to current refrigeration work consumption or cooling liquid stream Amount, can not complete the cooling of the battery within the object time, so, obtain the difference power between the P1 of the battery and P2, and root Increase the power of compressor 1 according to difference power, or increase the coolant rate in the loop branches circuit of the battery, to increase the electricity The cooling power in pond, wherein the difference power of P1 and P2 is bigger, and the power of compressor and the coolant rate increase of the battery are got over It is more, so that the temperature of the battery is reduced to target temperature in preset time t.And if wherein the P1 of some battery be less than or Equal to P2, the power of compressor can be kept constant or the appropriate power for reducing compressor, or reduce the circulation point of the battery The coolant rate of branch circuit reduces the cooling power of battery.When the temperature of all batteries is lower than 35 DEG C, then battery has cooled down At by CAN communication to the information of on-board air conditioner transmission closing temperature regulatory function, and the second electronic valve of control is closed.If After humidity control system enters the refrigerating mode long period, such as after 1 hour, still there is the temperature of battery to be higher than 35 DEG C, then fit again When the power for increasing compressor, so that the battery is completed to cool down as early as possible.
According to one embodiment of present invention, if battery temperature is less than third temperature threshold, further described in judgement Whether vehicle interior temperature is equal to air-conditioning set temperature Ts；If vehicle interior temperature is equal to air-conditioning set temperature Ts, multiple cars are reduced The aperture of cooling branch, and improve the aperture of the cooling branch of multiple batteries.
Specifically, when for refrigerating mode, if the temperature of each battery is both less than 45 DEG C, controller judges vehicle interior temperature Whether air-conditioning set temperature Ts is reached.If reached, increase the coolant rate of the cooling branch of battery, reduces interior cooling branch The coolant rate on road completes the cooling of battery as early as possible.And if vehicle interior temperature does not reach air-conditioning set temperature Ts, preferentially Meet interior refrigeration demand, controller increases the coolant rate of interior cooling branch, and reduces the cold of the cooling branch of battery But flow quantity.
It is handled by different level in addition, also having been done to battery temperature, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 DEG C. When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature is reduced to 35 DEG C, then battery is cooling is completed.When When battery temperature reaches 45 DEG C, preferentially meet battery cooling requirement.It is adjusted in fact in addition, temperature regulatory demand power P 1 is greater than temperature When the power P 2 of border, if battery temperature is no more than 45 DEG C, still preferential interior refrigeration demand, if interior refrigeration work consumption It is sufficient, and reach balance, then increase the aperture of the cooling branch of battery, to increase the cooling power of battery.And if temperature When regulatory demand power P 1 is less than or equal to temperature adjusting actual power P2, it can preferentially meet interior refrigeration demand.
According to one embodiment of present invention, the aperture for reducing multiple interior cooling branches specifically includes: obtaining multiple areas Temperature difference between the temperature of domain.Judge whether temperature difference is greater than the 4th temperature threshold.If temperature difference is greater than the 4th temperature threshold When, then the aperture of the corresponding interior cooling branch of refrigeration branch where the high air outlet of temperature is increased, and it is selectable will be warm The aperture of the cooling branch of the corresponding battery of refrigeration branch where spending high air outlet reduces.Wherein, the 4th temperature threshold can root It is preset according to actual conditions, such as can be 3 DEG C.
Further, according to one embodiment of present invention, the temperature control method of on-vehicle battery further include: temperature is low Air outlet where the aperture of the corresponding interior cooling branch of refrigeration branch reduce, and will refrigeration branch where the low air outlet of temperature The aperture of the cooling branch of the corresponding battery in road improves.
Specifically, it in battery cooling procedure, if car needs to open air-conditioning, needs to the environment temperature in compartment It is monitored and controls, so that interior environment temperature everywhere is kept in balance, while being able to satisfy the cooling requirement of battery again.Such as figure Shown in 21, when detecting that regional temperature Tq is than near zone temperature Tq at air outlet 3 and air outlet 4 at air outlet 1 and air outlet 2 At high 3 DEG C or more, increases the aperture in the first interior cooling branch, reduce the aperture in the cooling branch of the first battery, so that the Cooling power in one interior cooling branch is larger.The also selectable cold aperture reduced in the second interior cooling branch, increases The aperture of the cooling branch of second battery, so that the cooling power in the second interior cooling branch is smaller.Thus, it is possible to make the first electricity Pond is cooling constant with the cooling power of the cooling branch of the second battery, while making interior air outlet near zone temperature everywhere equal again Weighing apparatus.When on-board air conditioner detects air outlet 1, at air outlet 2 near zone temperature Tq and air outlet 3, air outlet 4 near area First expansion valve of domain temperature Tq difference when within 3 DEG C, in the interior cooling branch of control first and the second interior cooling branch Aperture is identical, and the cooling power to guarantee the first interior cooling branch and the second interior cooling branch is identical.
According to one embodiment of present invention, when for heating mode, further includes: judging that the temperature of some battery is adjusted needs The temperature for asking power P 1 whether to be greater than battery adjusts actual power P2.If the temperature regulatory demand power P 1 of some battery is greater than The corresponding temperature of battery adjusts actual power P2, then the temperature regulatory demand power P 1 and temperature for obtaining the battery adjust practical function Difference power between rate P2, and the power for cooling down the heater of battery is increased according to difference power, or adjust and increase battery Loop branches circuit coolant rate, to increase the heating power of battery.If the temperature regulatory demand function of some battery Rate P1 is less than or equal to the corresponding temperature of battery and adjusts actual power P2, then reduces the power of heater or keep the function of heater Rate is constant, or adjusts the coolant rate for reducing the loop branches circuit of battery, to reduce the heating power of battery.
Specifically, when for heating mode, the P1 and P2 of each battery are obtained respectively, and are judged.If wherein certain The P1 of one battery is greater than P2, illustrates if according to current heating power or coolant rate, can not be within the object time The heating of the battery is completed, so, the difference power between the P1 of the battery and P2 is obtained, and increase for heating according to difference power The power of the heater of battery, or the revolving speed by adjusting corresponding pump improve, to increase the loop branches circuit of the battery Coolant rate so that the battery can be completed in object time t temperature adjusting.Wherein, the difference of P1 and P2 is bigger, adds The power of hot device is increased more.And if the P1 of some battery is less than or equal to P2, it can suitably reduce the power of heater, To save electric energy, or the revolving speed by adjusting corresponding pump reduces the cooling liquid stream for reducing the loop branches circuit of the battery Amount to reduce heating power, or keeps the power of heater constant.When the temperature of all batteries is higher than preset temperature, such as 10 DEG C when, battery heating is completed, and is sent the information of closing temperature regulatory function to on-board air conditioner by CAN communication, and is controlled heating Device is closed.If still thering is the temperature of battery to be lower than after humidity control system enters the heating mode long period, such as after 1 hour 10 DEG C, then suitably increase the power of heater again, so that the battery is completed to heat up as early as possible.
According to one embodiment of present invention, if the temperature control method of on-vehicle battery can also include: some battery Temperature regulatory demand power P 1 be less than corresponding temperature adjust actual power P2, then reduce the revolving speed pumped in the flow path of battery； If the temperature regulatory demand power P 1 of some battery, which is greater than corresponding temperature, adjusts actual power P2, the flow path of battery is improved The revolving speed of middle pump.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of some battery is less than P2, controlling the revolving speed pumped accordingly reduces, to save electric energy.And if the P1 of some battery is greater than P2, controller is except control phase The power of the heater or compressor answered increases or the coolant rate increase in battery place circuit is outer, also controls the revolving speed of pump It improves, the coolant liquid quality for flowing through cooling flowing path cross section in the unit time can be increased, to improve the temperature tune of the battery Actual power P2 is saved, to realize that temperature is adjusted in object time t.
According to one embodiment of present invention, when battery be it is multiple, and flow path be connected in series, multiple batteries correspond to multiple The pump of the coolant rate of regulating cell, and pumping is two-way pump.
As shown in Figure 19-20, by taking battery is 2 as an example, when battery is (the first battery and second battery), and the company of series connection When connecing, pump corresponds to 2, and two pump one is positive pump, and one is reversing pump.
As shown in Figure 19 A, when positive pump startup, the flow direction of coolant liquid in second pipe are as follows: media Containers-change Hot device-heater-forward direction pumps the battery of the-the first temperature sensor-first-the second battery-second temperature sensor-stream Fast sensor-media Containers.As shown in Figure 19 B, when reversed pump startup, the flow direction of coolant liquid in second pipe are as follows: be situated between Matter container-flow sensor-second temperature sensor-battery-first of the second battery-first temperature sensor-is reversed Pump-heater-heat exchanger-media Containers.
In the starting of the refrigerating function of the first battery and the second battery, if the temperature of the first battery is higher than the second battery Temperature, and difference is more than preset value, then controls positive pump work, so that coolant liquid firstly flows through the first battery, again passes through the second electricity Pond, so that the first battery be made to complete to cool down as early as possible.And if the temperature of the second battery is higher than the temperature of the first battery, and difference is super Preset value is crossed, then controls reversed pump work, so that coolant liquid firstly flows through the second battery, the first battery is again passed through, to make second Battery is completed to cool down as early as possible.Pass through the flow direction of change coolant liquid as a result, it is possible to reduce the temperature of the first battery and the second battery Difference.And when the refrigerating function and heating function of the first battery and the second battery all do not start, if the first battery and second The temperature difference of battery is more than preset value, then can control positive pump or reversed pump startup, so that the cooling in the cooling branch of battery Liquid stream is dynamic, thus the temperature of balanced first battery and the second battery.
To make those skilled in the art be more clearly understood that the present invention, the temperature of on-vehicle battery is described below with reference to specific example Spend the course of work of regulating system.
The main distinction of Figure 19 and Figure 14 A is to increase a compression mechanism cold loop, while increasing car Power regulation problem between the temperature equalization and compressor of air-conditioner air outlet.Difference is only listed below, remaining does not do wadding and states.
As shown in figure 19, when battery be it is multiple, when humidity control system enters refrigerating mode, controller obtains often respectively The P1 of a battery, each battery temperature adjust the maximum refrigeration work consumption P of actual power P2 and single compressor, and by each electricity The P1 in pond is added the total moisture content regulatory demand power P that can calculate entire humidity control systemZ, the temperature of each battery is adjusted Actual power P2 is added to obtain total moisture content adjusting actual power Pf, and the maximum refrigeration work consumption addition of each compressor can be calculated The sum of the maximum refrigeration work consumption of all compressors P5.P51 is the maximum refrigeration work consumption of compressor 11, and P52 is the maximum of compressor 12 Refrigeration work consumption, P5 are the sum of the maximum refrigeration work consumption of all compressors, P5=P51+P52.Wherein, the temperature of the first battery is adjusted Demand power is P11, and the temperature regulatory demand power of the second battery is P12.The temperature of first battery 61 adjusts actual power P21, it is P22 that the temperature of the second battery 62, which adjusts actual power,.
If Pz≤P51, only needs to control a compressor operating, refrigeration work consumption is provided, also can control two Compressor works together.If P51 < Pz≤P5 needs two compressors to work together, the initial refrigeration of each compressor Power can be Pz/2, or other power combination forms, so that the sum of refrigeration work consumption of 2 compressors is Pz.If Pz > P5 then needs two compressors to work together, and each compressor is run according to maximum refrigeration work consumption.The temperature of the cooling branch of car Regulatory demand power is P4, i.e. P4 is the power that vehicle interior temperature is adjusted to set temperature needs.
Cooling in the car and battery is cooling when opening simultaneously, it is assumed that air outlet 1,2 region of air outlet temperature be T51, out Air port 3,4 regional temperature of air outlet are T52.
If T51-T52 >=Tc, Tc are 3 DEG C, then it is handled as follows:
If Pz+P4≤P5, the refrigeration work consumption for controlling the first compressor 11 is improved, or the first compressor refrigeration of control The expansion valve opening of battery cooling circuit reduces in circuit, and the expansion valve opening for controlling interior cooling circuit increases, or simultaneously The expansion valve for controlling the battery cooling circuit in the second compression mechanism cold loop increases, and the expansion valve for controlling interior cooling circuit is opened Degree is reduced, so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature equalization.
If Pz+P4 > P5, running with maximum refrigeration work consumption for a first compressor and a second compressor, same time control are controlled The expansion valve opening for making battery cooling circuit in the first compression mechanism cold loop reduces, and the expansion valve for controlling interior cooling circuit is opened Degree increases, or controls the expansion valve increase of the battery cooling circuit in the second compression mechanism cold loop simultaneously, and control is interior cold But the expansion valve opening in circuit is reduced, so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, is realized Environment inside car temperature equalization.
If T51-T52 >=Tc, Tc are 3 DEG C, can also be handled as follows:
The closing of battery cooling circuit in the first compression mechanism cold loop is controlled, the expansion valve for controlling interior cooling circuit is opened Degree increases, so that all refrigeration work consumptions of the first compressor are all used for interior cooling.The second compression mechanism cold loop is controlled simultaneously In the expansion valve of battery cooling circuit increase, the expansion valve opening for controlling interior cooling circuit is reduced, and is increased cooling to battery Power so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature equalization.
The main distinction of Figure 20 and Fig. 9 is to increase a compression mechanism cold loop, while increasing interior sky Recall the power regulation problem between the temperature equalization in air port and compressor.Difference is only listed below, remaining does not do wadding and states.
As shown in figure 20, when battery be it is multiple, when humidity control system enters refrigerating mode, controller obtains often respectively The P1 of a battery 6, the temperature of each battery adjust the maximum refrigeration work consumption P of actual power P2 and single compressor, and will be each The P1 of battery is added the total moisture content regulatory demand power P z that can calculate entire humidity control system, by the temperature tune of each battery Section actual power P2 is added to obtain total moisture content adjusting actual power Pf, and the maximum refrigeration work consumption addition of each compressor can be calculated The sum of maximum refrigeration work consumption of all compressors P5 out.P51 is the maximum refrigeration work consumption of compressor 11, P52 be compressor 12 most Big refrigeration work consumption, P5 are the sum of the maximum refrigeration work consumption of all compressors, P5=P51+P52.Wherein, the temperature of the first battery 61 Degree regulatory demand power is P11, and the temperature regulatory demand power of the second battery 62 is P12.The temperature of first battery 61 adjusts real Border power is P21, and it is P22 that the temperature of the second battery 62, which adjusts actual power,.
If Pz≤P51, only needs to control a compressor 1 and work, refrigeration work consumption is provided, also can control two Compressor 1 works together.If P51 < Pz≤P5 needs two compressors to work together, the initial refrigeration of each compressor Power can be Pz/2, or other power combination forms, so that the sum of refrigeration work consumption of 2 compressors is Pz.If Pz > P5 then needs two compressors to work together, and each compressor is run according to maximum refrigeration work consumption.The temperature of the cooling branch of car Regulatory demand power is P4, i.e. P4 is the power that vehicle interior temperature is adjusted to set temperature needs.
Cooling in the car and battery is cooling when opening simultaneously, it is assumed that air outlet 1,2 region of air outlet temperature be T51, out Air port 3,4 regional temperature of air outlet are T52.
If T51-T52 >=Tc, Tc are 3 DEG C, then it is handled as follows:
If Pz+P4≤P5, the refrigeration work consumption for controlling the first compressor 11 is improved, or control the first compressor 11 system The expansion valve opening of battery cooling circuit reduces in cold loop, and the expansion valve opening for controlling interior cooling circuit increases, Huo Zhetong When control the expansion valve of battery cooling circuit in 12 refrigerating circuit of the second compressor and increase, control the expansion of interior cooling circuit Valve opening is reduced, so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature It is balanced.
If Pz+P4 > P5, control the first compressor 11 and the second compressor 12 with the operation of maximum refrigeration work consumption, together When control the expansion valve opening of battery cooling circuit in 11 refrigerating circuit of the first compressor and reduce, control the swollen of interior cooling circuit Swollen valve opening increases, or controls the expansion valve increase of the battery cooling circuit in 12 refrigerating circuit of the second compressor, control simultaneously The expansion valve opening for making interior cooling circuit is reduced, so that T51 temperature accelerates decline, while meeting the cooling power need of battery again It asks, realizes environment inside car temperature equalization.
If T51-T52 >=Tc, Tc are 3 DEG C, can also be handled as follows:
The closing of battery cooling circuit in 11 refrigerating circuit of the first compressor is controlled, the expansion valve of interior cooling circuit is controlled Aperture increases, so that all refrigeration work consumptions of the first compressor 11 are all used for interior cooling.The second compressor 12 system is controlled simultaneously The expansion valve of battery cooling circuit in cold loop increases, and the expansion valve opening for controlling interior cooling circuit is reduced, and increases to electricity Pond cooling power so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature It is balanced.
The temperature control method of on-vehicle battery according to an embodiment of the present invention, firstly, obtaining the cooling branch of multiple batteries respectively The temperature regulatory demand power of multiple batteries in road, then, the regional temperature and air-conditioning for obtaining multiple regions in vehicle respectively are set Fixed temperature adjusts actual power, multiple regions temperature and air-conditioning set temperature to multiple further according to temperature regulatory demand power, temperature The aperture of the cooling branch of car, the cooling branch of multiple batteries and multiple refrigeration branches is adjusted.This method is according to each as a result, Multiple regions temperature and air-conditioning set temperature in the virtual condition and compartment of battery, to the refrigerating capacity of battery and the compartment region Nei Ge It is allocated, temperature can be not only adjusted when battery temperature is excessively high or when too low, maintain the temperature of battery Preset range, can be with the temperature in the region balanced compartment Nei Ge.
When battery is multiple, and multiple batteries are independently arranged, as shown in figure 24, the humidity control system packet of on-vehicle battery It includes: multiple refrigeration branches, multiple interior cooling branches, the cooling branch of multiple batteries and battery temperature adjustment module 5.
Wherein, each refrigeration branch includes compressor 1, the condenser being connected with compressor 12.Multiple interior cooling branches It is connected respectively with multiple refrigeration branches.The cooling branches of multiple batteries are connected with multiple refrigeration branches, multiple batteries cool down branches it Between be interconnected.Battery temperature adjustment module 5 is connected with multiple batteries and the cooling branch of multiple batteries respectively, for obtaining temperature Regulatory demand power P 1 and temperature adjust actual power P2, and obtain regional temperature Tq and the air-conditioning setting of multiple regions in vehicle Temperature Ts, and adjust actual power P2, multiple regions temperature Tq and air-conditioning according to temperature regulatory demand power P 1, temperature and set Temperature Ts is adjusted the aperture of multiple interior cooling branches, the cooling branch of multiple batteries and multiple refrigeration branches, and according to The temperature regulatory demand power P 1 of battery and temperature adjust actual power P2, and to adjust multiple compressors 1 cold to the corresponding battery of battery But the refrigerating capacity aperture that branch provides.
Wherein, battery can be with battery pack or battery modules.
Further, according to one embodiment of present invention, battery temperature adjustment module 5 is according to institute's temperature regulatory demand function Rate P1, temperature adjust actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts in object time t to multiple The aperture of the cooling branch of car, the cooling branch of multiple batteries and multiple refrigeration branches is adjusted, to reach target temperature.
For example, as shown in figure 24, with refrigeration branch, the cooling branch of battery, interior cooling branch and battery for two For, battery is respectively the first battery 61 and the second battery 62, and the first battery 61 and the second battery 62 are arranged independently of each other.Refrigeration Branch is respectively the first refrigeration branch 11 and the second refrigeration branch 12, and the cooling branch of battery is respectively the cooling branch of the first battery 401 and the second cooling branch 402 of battery, the cooling branch of car is respectively that the first interior cooling branch 301 and second is interior cooling Branch 302.
When the temperature of the first battery 61 and/or the second battery 62 is excessively high/too low, need to the first battery 61 and/or Two batteries 62 carry out temperature adjusting.Battery temperature adjustment module 5 obtains temperature regulatory demand power P 1 and temperature adjusts practical function Rate P2 adjusts the aperture of the cooling branches of multiple batteries according to P1 and P2, with the cooling power of regulating cell, and battery temperature tune It saves module 5 and obtains multiple regions temperature Tq and air-conditioning set temperature Ts, and the cooling branch of each battery is controlled according to Tq and Ts and is opened Degree, for example, if the Tq higher in some region and, battery temperature adjustment module 5 control larger in the Tq in other regions difference The aperture of the cooling branch of the car in the cooling region increases, while the aperture for controlling the cooling branch of corresponding battery reduces, meanwhile, Cooling power to guarantee battery is constant, and the aperture that battery temperature adjustment module 5 controls the cooling branch of another car reduces.By This, the system is according to multiple regions temperature and air-conditioning set temperature in the virtual condition and compartment of each battery, to battery and vehicle The refrigerating capacity in the compartment region Nei Ge is allocated, and temperature can be not only adjusted when battery temperature is excessively high or when too low, The temperature of battery is set to maintain preset range, it can be with the temperature in the region balanced compartment Nei Ge.Simultaneously as multiple batteries are cooling It is interconnected between branch, therefore battery temperature adjustment module 5 can be corresponding by regulating cell according to the temperature of each battery The cooling branch of battery refrigerating capacity aperture, it is ensured that the equilibrium of temperature between each battery.
It is appreciated that the refrigeration work consumption of battery temperature adjustment module 5 is provided by on-board air conditioner, shared with interior refrigeration system Refrigerating capacity so as to reduce the volume of humidity control system, and keeps the distribution of coolant rate more flexible.
According to one embodiment of present invention, as shown in figure 24, the cooling branch of battery may include heat exchanger 41, heat exchanger 41 include first pipe and second pipe, and second pipe is connected with battery temperature adjustment module 5, first pipe and 1 phase of compressor Connection, wherein first pipe with second pipe is mutually independent closes on setting.
Battery temperature adjustment module 5 includes: the flow path (not specifically illustrated in figure) of regulating cell temperature, and flow path is arranged in electricity Among pond.The pump 51 between flow path and heat exchanger 41, media Containers 52, heater 53 and controller is connected to (not have in figure Body is shown).Wherein, controller obtains the temperature regulatory demand power P 1 of battery and the temperature of battery adjusts actual power P2, and Actual power P2 is adjusted according to temperature regulatory demand power P 1 and temperature the temperature of battery is adjusted.The cooling branch of car can To include: evaporator 31, the first expansion valve 32 and the first electronic valve 33.The cooling branch 4 of battery can also include the second expansion valve 42 and second electronic valve 43.
As shown in figure 24, the cooling branch 401 of the first battery can also include the first regulating valve 411 and third regulating valve 413； The cooling branch 402 of second battery can also include the second regulating valve 412 and the 4th regulating valve 414, the connection type of each regulating valve It specifically can refer to Figure 24, be not repeated herein.As shown in figure 24, the refrigerating capacity of each compressor 1 can be by adjusting first The cooling branch 401 of the first battery or the cooling branch 402 of the second battery are distributed to the 4th regulating valve 411-414.Such as first Refrigerant can be distributed to the cooling branch 401 of the first battery by the first regulating valve 411, led to by the compressor 1 of refrigeration branch 11 It crosses the second regulating valve 412 and refrigerant is distributed into the cooling branch 402 of the second battery.Compressor 1 in second refrigeration branch 12, can be with Refrigerant is distributed into the cooling branch 401 of the first battery by third regulating valve 413, is distributed refrigerant by the 4th regulating valve 414 Give the second battery cooling branch 402.
An embodiment according to the present invention, as shown in figure 24, battery temperature adjustment module 5 can also include that setting exists The second temperature sensor 56 and flow-velocity sensing of the outlet of flow path is arranged in first temperature sensor 55 of the entrance of flow path Device 57.It is appreciated that the entrance and exit position of flow path is not absolute, determining according to the steering of pump 51.
Specifically, heat exchanger 41 can be plate heat exchanger, and plate heat exchanger may be mounted inside on-board air conditioner, so that Entire refrigerant circuit convenient for on-board air conditioner factory debugging, and supplies that on-board air conditioner individually inside on-board air conditioner Goods and assembling, meanwhile, on-board air conditioner only needs to fill primary coolant during the installation process.Coolant liquid is flowed into from the entrance of flow path The inside of battery is flowed out from the outlet of flow path, to realize the heat exchange between battery and coolant liquid.
Pump 51 is mainly used for providing power, and media Containers 52 are mainly used for storing coolant liquid and receive to humidity control system The coolant liquid of addition, when the coolant liquid in humidity control system is reduced, the coolant liquid in media Containers 52 can be automatically replenished.Add Hot device 53 can be ptc heater, can with controller carry out CAN communication, for on-vehicle battery humidity control system provide add Thermal power is controlled by the controller.And heater 53 is not direct contacts with battery 6, safety with higher, reliability and practical Property.
Temperature of first temperature sensor 55 to detect path inlet coolant liquid, second temperature sensor 56 is to detect The temperature of flowing path outlet coolant liquid.Flow rate information of the flow sensor 57 to detect coolant liquid in corresponding pipeline.Second electronics For valve 43 to control opening and closing for the cooling branch 4 of corresponding battery, the second expansion valve 42 can be used for the battery of control response Coolant rate in cooling branch 4.Controller can be by the aperture of first to fourth regulating valve 411-414 of adjusting, simultaneously The coolant rate of the first battery 61 and 62 two, the second battery cooling duplexures is controlled, to make the temperature of balanced two batteries Degree.Controller can also carry out CAN communication with on-board air conditioner and heater 53 simultaneously, and can control revolving speed and the monitoring of pump 51 The temperature and flow information of coolant liquid, can also be managed battery, detect the voltage and temperature information of battery, control vehicle-mounted The on-off of the humidity control system of battery, and can be communicated with each other between controller.
The temperature tune how each battery temperature adjustment module 5 obtains respective battery 6 is described combined with specific embodiments below It saves demand power P1 and temperature adjusts actual power P2.
According to one embodiment of present invention, controller can be used for obtaining respectively when each battery opening temperature is adjusted First parameter, and the first temperature regulatory demand power of each battery is generated according to the first parameter, and obtain each electricity respectively Second parameter of the pond when temperature is adjusted, and the second temperature regulatory demand power of each battery is generated according to the second parameter, and Each electricity is generated according to the second temperature regulatory demand power of the first temperature regulatory demand power of each battery and each battery The temperature regulatory demand power P 1 in pond.
Further, according to one embodiment of present invention, the first parameter is initial temperature when battery opening temperature is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature, controller obtain initial temperature and target temperature The first temperature difference Δ T between degree1, and according to the first temperature difference Δ T1The first temperature regulatory demand function is generated with object time t Rate.
Further, controller generates the first temperature regulatory demand power by following formula (1):
ΔT1* (1) C*M/t,
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
Second parameter is the average current I of each battery within a preset time, and controller generates the by following formula (2) Two temperature regulatory demand power:
I2* R, (2),
Wherein, I is average current, and R is the internal resistance of battery.
When being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C* M/t-I2*R。
According to one embodiment of present invention, controller is respectively according to first temperature sensor in circuit where each battery The outlet temperature that the inlet temperature and second temperature sensor 56 of 55 detections detect generates the second temperature difference Δ T of each battery2, And according to the second temperature difference Δ T of each battery2The temperature that the flow velocity v detected with flow sensor 57 generates each battery is adjusted Actual power P2.
Further, according to one embodiment of present invention, the practical function of temperature adjusting is generated according to by following formula (3) Rate P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is the cross of flow path Sectional area.
Specifically, after vehicle powers on, controller judges whether vehicle needs to carry out temperature adjusting, if it is determined that vehicle needs Temperature is adjusted, then opening temperature regulatory function, and sends slow-speed of revolution information to pump 51, and pump is to default revolving speed (such as slow-speed of revolution) beginning Work.Then, controller obtains the initial temperature (i.e. Current Temperatures) of each battery, target temperature and reaches mesh from initial temperature The object time t of temperature is marked, wherein target temperature and object time t can be preset according to the actual situation, and according to formula (1) the first temperature regulatory demand power of each battery is calculated.Meanwhile controller obtains and obtains each battery respectively when default Interior average current I, and each battery second temperature regulatory demand power is calculated according to formula (2).Then, controller is distinguished According to the first temperature regulatory demand power of each battery 6 and second temperature regulatory demand power calculation temperature regulatory demand power The temperature of battery (is adjusted to the demand power of target temperature) by P1 within the object time.Also, controller obtains often respectively The first temperature sensor 55 and second temperature sensor 56 that a battery is correspondingly arranged detect temperature information, and obtain flow velocity respectively The flow rate information that sensor 57 detects adjusts actual power P2 according to the temperature that formula (3) calculates separately out each battery.
Below in conjunction with the description of specifically embodiment how according to temperature regulatory demand power P 1, temperature adjusting actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts are to multiple interior cooling branches of cooling branch (30 and 30) multiple batteries The aperture of (401 and 402) and multiple refrigeration branches (11 and 12) is adjusted.
According to one embodiment of present invention, controller can be used for the temperature regulatory demand power P 1 according to each battery Generate total moisture content regulatory demand power PZ, judge total moisture content regulatory demand power PZWhether the total maximum system of multiple compressors is greater than Cold power P 5, wherein when total moisture content regulatory demand power PZGreater than multiple compressors total maximum refrigeration work consumption P5 when, controller Multiple compressors 1 are adjusted to the refrigerating capacity aperture of the cooling branch 4 of the corresponding battery of battery to maximum；When total moisture content regulatory demand Power PZLess than or equal to multiple compressors total maximum refrigeration work consumption P5 when, controller is according to total moisture content regulatory demand power PZ And the difference of total maximum refrigeration work consumption P5 is adjusted the refrigerating capacity aperture of the cooling branch 4 of the corresponding battery of battery 6.
Specifically, as shown in figure 24, when cooling down to battery, controller can be adjusted according to the temperature of each battery Demand power P1 calculates the total moisture content regulatory demand power P of entire humidity control systemZ, i.e., the temperature of each battery is adjusted Total moisture content regulatory demand power P can be obtained in demand power P1 additionZ, while controller is made according to the maximum of each compressor 1 Cold power P calculates total maximum refrigeration work consumption P5P5 of multiple compressors, i.e., by the maximum refrigeration work consumption P phase of each compressor 1 Add and total maximum refrigeration work consumption P5P5 can be obtained.Then, controller judges whether PZ> P5P5, if it is, controller controls By the aperture regulation of each second expansion valve 42 to maximum, each battery is flowed into increase；The cooling liquid stream of cooling circuit 4 Amount allows battery to complete cooling within the object time.And if PZ≤ P5P5 needs two compressors to work together, each The initial refrigeration work consumption of compressor can be Pz/2, or other power combination form so that the refrigeration work consumption of 2 compressors it With for Pz, and according to PZDifference between P5 is adjusted the aperture of each second expansion valve 42, wherein PZWith P5 difference Absolute value it is bigger, the aperture of the second expansion valve 42 is smaller, energy saving to achieve the purpose that.
According to one embodiment of present invention, as shown in figure 24, controller is also used to, and is also used to detect the temperature of multiple batteries Degree, and when the temperature of any of multiple batteries 6 battery is greater than the first temperature threshold, control humidity control system enters cooling Mode, and when the temperature of any of multiple batteries battery is less than second temperature threshold value, control humidity control system enters Heating mode.Wherein, the first temperature threshold and second temperature threshold value can be preset according to the actual situation, for example, the first temperature Spending threshold value can be 40 DEG C, and second temperature threshold value can be 0 DEG C.
Specifically, after vehicle powers on, controller distinguishes the temperature of each battery of real-time detection, and is judged.If its In the temperature of some battery be higher than 40 DEG C, illustrate that the temperature of the battery at this time is excessively high, to avoid high temperature to the production of the performance of the battery It is raw to influence, need to carry out the battery cooling processing, controller control humidity control system enters refrigerating mode, concurrent power transmission pond Refrigerating function starts information to air-conditioning system, and corresponding second electronic valve 43 of control is opened so that coolant liquid and battery into Row heat exchange is to reduce the temperature of the battery.
And if the temperature of some battery is lower than 0 DEG C, illustrate that the temperature of the battery at this time is too low, to avoid low temperature to the electricity The performance in pond has an impact, and needs to carry out the battery heating treatment, and controller control humidity control system enters heating mode, The closing of the second electronic valve 43 is controlled, and controls corresponding heater 53 and opens, to provide heating power for humidity control system.When Humidity control system works in heating mode, and heater 53 provides heating power, for heating the first battery 61, the first electricity Pond 61 coolant liquid in the loop flow direction are as follows: 52-heat exchanger of media Containers, 41-heater 53 (unlatching)-pump 51-the first 57-media Containers of temperature sensor the 55-the first battery 61-second temperature sensor, 56-flow sensor 52, So circulation realizes the heating of the first battery of battery 61.
According to one embodiment of present invention, as shown in figure 24, when for refrigerating mode, controller is also used to, in battery When the temperature regulatory demand power P 1 of cooling branch is greater than temperature adjusting actual power P2, judge whether battery temperature is greater than third Temperature threshold, wherein if battery temperature is greater than third temperature threshold, controller improves opening for the cooling branch of corresponding battery Degree, wherein the aperture of the cooling branch of battery is controlled respectively by corresponding valve (i.e. the second expansion valve 42), third temperature threshold Greater than the first temperature threshold, such as third temperature threshold can be 45 DEG C.
Specifically, when for refrigerating mode, if P1 is greater than P2, controller judges whether the temperature of battery is greater than 45 ℃.If the temperature of any one battery is greater than 45 DEG C, illustrate that the temperature of present battery is excessively high, it is swollen that controller reduces corresponding first The aperture of swollen valve 32 to reduce the coolant rate of interior cooling branch, while increasing the aperture of the second expansion valve 42, to increase The coolant rate of the cooling branch of battery.The refrigerating capacity by adjusting interior cooling branch and the cooling branch of battery is distributed as a result, The temperature that can complete battery within the object time when battery temperature is excessively high is adjusted.
According to one embodiment of present invention, as shown in figure 24, be refrigerating mode when, controller is also used in some battery Temperature regulatory demand power P 1 be greater than battery temperature adjust actual power P2 when, obtain the temperature regulatory demand power of battery P1 and temperature adjust the difference power between actual power P2, and increase the compressor 1 of the cooling for battery according to difference power Power, or the coolant rate for increasing the loop branches circuit of battery is adjusted, to increase the cooling power of battery, or at certain The temperature that the temperature regulatory demand power P 1 of a battery is less than or equal to battery adjusts actual power P2, reduces the power of compressor Or keep the power of compressor constant, or adjust the coolant rate for reducing the loop branches circuit of battery, to reduce battery Cooling power.
Specifically, when work in refrigerating mode, if battery be it is multiple, controller obtain respectively each battery P1 and P2, and judged.If wherein the P1 of some battery is greater than P2, illustrate if according to current refrigeration work consumption or cooling Flow quantity can not complete the cooling of the battery within the object time, so, controller obtains between the P1 of the battery and P2 Difference power, and according to the power of difference power increase compressor 1, or increase the cooling liquid stream in the loop branches circuit of the battery Amount, to increase the cooling power of the battery, wherein the difference power of P1 and P2 is bigger, the cooling of the power and the battery of compressor 1 Flow quantity increase is more, so that the temperature of the battery is reduced to target temperature in preset time t.And if wherein some battery P1 be less than or equal to P2, the power of compressor 1 can be kept constant or it is appropriate reduce compressor 1 power, or reduce should The coolant rate in the loop branches circuit of battery, reduces the cooling power of battery.When the temperature of all batteries is lower than 35 DEG C, Then battery is cooling completes, and controller sends the information of closing temperature regulatory function by CAN communication to on-board air conditioner, and controls the Two electronic valves 43 are closed.If after humidity control system enters the refrigerating mode long period, such as after 1 hour, still there is battery Temperature is higher than 35 DEG C, then controller suitably increases the power of compressor again, so that the battery is completed to cool down as early as possible.
According to one embodiment of present invention, as shown in figure 24, controller is also used to the temperature in some battery less than Three temperature thresholds, and when vehicle interior temperature is equal to air-conditioning set temperature Ts, the aperture of multiple interior cooling branches is reduced, and improve more The aperture of the cooling branch of a battery.
Specifically, when for refrigerating mode, if the temperature of each battery is both less than 45 DEG C, controller judges vehicle interior temperature Whether air-conditioning set temperature Ts is reached.If reached, controller reduces the aperture of the first expansion valve 32, and increases the second expansion The aperture of valve 42 reduces the coolant rate of interior cooling branch to increase the coolant rate of the cooling branch of battery, complete as early as possible At the cooling of battery.And if vehicle interior temperature does not reach air-conditioning set temperature Ts, it is preferential to meet interior refrigeration demand, control Device processed increases the aperture of the first expansion valve 32, and reduces the aperture of the second expansion valve 42.
In addition, also being handled by different level to having done to battery temperature, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 ℃.When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature is reduced to 35 DEG C, then battery is cooling is completed. When battery temperature reaches 45 DEG C, preferentially meet battery cooling requirement.In addition, temperature regulatory demand power P 1 is adjusted greater than temperature When actual power P2, if battery temperature is no more than 45 DEG C, still preferential interior refrigeration demand, if interior refrigeration function Rate is sufficient, and reaches balance, then controller increases the aperture of the cooling branch of battery, to increase the cooling power of battery.And If temperature regulatory demand power P 1 is less than or equal to temperature adjusting actual power P2, it can preferentially meet interior refrigeration demand.
In one embodiment of the invention, multiple refrigeration branches respectively correspond multiple air outlets, and multiple regions temperature is The temperature of multiple air outlets.
For example, as shown in figure 21,4 air outlets, respectively air outlet 1- air outlet 4 can be set in compartment.It is logical It crosses detection air port temperature Tc and detects corresponding regional temperature Tq.Assuming that air outlet 1 and air outlet 2 are by the first refrigeration branch 11 Refrigeration work consumption is provided, air port 3 and air outlet 4 is set out by the second refrigeration branch 12 and refrigeration work consumption is provided.
According to one embodiment of present invention, as shown in figure 24, controller is also used to obtain between multiple regions temperature Temperature difference, and when temperature difference is greater than four temperature thresholds, the corresponding car of refrigeration branch where the high air outlet of temperature is cold But the aperture of branch increases, and the aperture of the cooling branch of the corresponding battery of refrigeration branch where the high air outlet of temperature is reduced. Wherein, the 4th temperature threshold can be preset according to the actual situation, such as can be 3 DEG C.
Further, according to one embodiment of present invention, controller is also used to refrigeration where the low air outlet of temperature The aperture of the corresponding interior cooling branch of branch reduces, and the corresponding battery of refrigeration branch where the low air outlet of temperature is cooling The aperture of branch improves.
Specifically, it in battery cooling procedure, if car needs to open air-conditioning, needs to the environment temperature in compartment It is monitored and controls, so that interior environment temperature everywhere is kept in balance, while being able to satisfy the cooling requirement of battery again.Such as figure Shown in 21, when detecting that regional temperature Tq is than near zone temperature Tq at air outlet 3 and air outlet 4 at air outlet 1 and air outlet 2 At high 3 DEG C or more, the aperture of the first expansion valve 32 in the interior cooling branch 301 of control first increases, while controlling the first electricity The aperture of the second expansion valve 42 in the cooling branch 401 in pond reduces, so that the cooling power in the first interior cooling branch 301 increases Add.The aperture that controller also controls the first expansion valve 32 in the second interior cooling branch 302 reduces, the cooling branch of the second battery The aperture of the second expansion valve 42 in 402 increases, so that the cooling power in the second interior cooling branch 302 is smaller.As a result, may be used So that the cooling power of the first battery cooling 301 and the cooling branch 302 of the second battery is constant, while making interior outlet air everywhere again Mouth near zone temperature is balanced.When on-board air conditioner detects air outlet 1, near zone temperature Tq and air outlet 3 at air outlet 2, Near zone temperature Tq difference is when within 3 DEG C at air outlet 4, the interior cooling branch 301 of controller control first and the second vehicle 32 aperture of the first expansion valve in interior cooling branch 302 is identical, to guarantee that the first interior cooling branch 301 and second is interior cooling The cooling power of branch 302 is identical.
According to one embodiment of present invention, when for heating mode, temperature regulatory demand of the controller in some battery When the temperature that power P 1 is greater than battery adjusts actual power P2, the temperature regulatory demand power P 1 and temperature for obtaining battery are adjusted Difference power between actual power P2, and the power for heating the heater of battery is increased according to difference power, or adjust and increase Add the coolant rate in the loop branches circuit of the battery, to increase the heating power of the battery, and in some battery Temperature regulatory demand power P 1 be less than or equal to battery temperature adjust actual power P2 when, reduce power or the guarantor of heater The power for holding heater is constant, or adjusts the coolant rate for reducing the loop branches circuit of battery, to reduce adding for battery Thermal power.
Specifically, when for heating mode, controller obtains the P1 and P2 of each battery respectively, and is judged.If Wherein the P1 of some battery is greater than P2, illustrates if according to current heating power or coolant rate, can not be in target The heating of the battery is completed in time, so, controller obtains the difference power between the P1 of the battery and P2, and according to difference power Increase the power for heating the heater 53 of battery, or the revolving speed by adjusting corresponding pump 51 improves, to increase the electricity The coolant rate in the loop branches circuit in pond, so that the battery can complete temperature adjusting in object time t.Wherein, P1 Bigger with the difference of P2, the power of heater 53 is increased more.And if the P1 of some battery is less than or equal to P2, controller The power of heater 53 can suitably be reduced, to save electric energy, or the revolving speed by adjusting corresponding pump 51 is reduced to reduce The coolant rate in the loop branches circuit of the battery to reduce heating power, or keeps the power of heater 53 constant.When The temperature of all batteries is higher than preset temperature, such as at 10 DEG C, and battery heating is completed, and controller is by CAN communication to vehicle-mounted sky The information for sending closing temperature regulatory function is readjusted the distribution, and controls the closing of heater 53.If humidity control system enters heating mode After long period, such as after 1 hour, still there is the temperature of battery lower than 10 DEG C, then controller suitably increases the function of heater 53 again Rate, so that the battery is completed to heat up as early as possible.
According to one embodiment of present invention, controller is also used to small in the temperature regulatory demand power P 1 of some battery When corresponding temperature adjusts actual power P2, the revolving speed of pump 51 in cell flow is reduced, and adjust in the temperature of some battery When demand power P1 is greater than corresponding temperature adjusting actual power P2, the revolving speed of pump 51 in cell flow is improved.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of some battery is less than The revolving speed of P2, the corresponding pump 51 of controller control reduce, to save electric energy.And if the P1 of some battery is greater than P2, controller In addition to the power for controlling corresponding heater 53 or compressor 1 increases or the coolant rate in battery place circuit increases, also The revolving speed of control pump 51 improves, and can increase the coolant liquid quality that cooling flowing path cross section is flowed through in the unit time, to improve The temperature of the battery adjusts actual power P2, to realize that temperature is adjusted in object time t.
It is appreciated that as shown in figure 24, controller can calculate separately when humidity control system work is in refrigerating mode The temperature regulatory demand power P 1 of first battery 61 and the second battery 62 out, then respectively according to the P1 of each battery and corresponding The maximum refrigeration work consumption P of compressor adjusts the aperture of corresponding second expansion valve 42.In cooling procedure, controller also distinguishes root The aperture that actual power P2 continues the second expansion valve 42 of adjustment is adjusted according to the temperature of each battery.Meanwhile controller is according to first Temperature conditions between battery 61 and the second battery 62 adjusts the by adjusting the aperture of first to fourth regulating valve 411-414 The coolant rate distribution of the cooling branch 401 of one battery and the cooling branch 402 of the second battery, to reach the first battery 61 of control With the equilibrium of 62 temperature of the second battery.Wherein, when the temperature of the first battery 61 is higher than the temperature of the second battery 62 and difference is more than When setting value, it is possible to increase the aperture of the first regulating valve 411 and third regulating valve 413 reduces by the second regulating valve 412 and the 4th and adjusts The aperture of valve 414, to increase the cooling power of the first battery 61；When the temperature of the first battery 61 and the second battery 62 is equal, The aperture of controllable first to fourth regulating valve 411-414 is identical.And when humidity control system work is in heating mode, when the When the temperature of one battery 61 is lower than the temperature of the second battery 62 and difference is more than setting value, then it is right to increase the first battery 61 for controller The heating power for the heater 53 answered.Thus, it is possible to keep the temperature equalization between two batteries.
To make those skilled in the art be more clearly understood that the present invention, the temperature of on-vehicle battery is described below with reference to specific example Spend the course of work of regulating system.
Compared with Figure 24 humidity control system shown in Figure 11 A-11B, interior cooling circuit is increased.It only lists below not Same, remaining does not do wadding and states.
As shown in figure 24, when battery, interior cooling circuit 3, battery cooling circuit 4 are multiple, and multiple batteries are independently set When setting, when humidity control system enters refrigerating mode, controller obtains the temperature of the P1 of each battery 6, each battery respectively The maximum refrigeration work consumption P of actual power P2 and single compressor are adjusted, and the P1 of each battery addition can be calculated into entire temperature Spend the total moisture content regulatory demand power P of regulating systemZ, the temperature of each battery is adjusted into actual power P2 and is added to obtain total moisture content Actual power Pf is adjusted, the maximum refrigeration work consumption of each compressor is added to the maximum refrigeration work consumption that can calculate all compressors The sum of P5.Wherein, the temperature regulatory demand power of the first battery 61 is P11, and the temperature regulatory demand power of the second battery 62 is P12.It is P21 that the temperature of first battery 61, which adjusts actual power, and it is P22 that the temperature of the second battery 62, which adjusts actual power,.P51 is The maximum refrigeration work consumption of first compressor 11, P52 are the maximum refrigeration work consumption of the second compressor 12.
If Pz≤P51, only needs to control a compressor 1 and work, refrigeration work consumption is provided, also can control two Compressor 1 works together.If P51 < Pz≤P5 needs two compressors 1 to work together, the initial system of each compressor Cold power is Pz/2, or other power combination forms, so that the sum of refrigeration work consumption of 2 compressors is Pz.If Pz > P5, then each compressor is run according to maximum refrigeration work consumption.
Cooling in the car and battery is cooling when opening simultaneously, it is assumed that air outlet 1,2 region of air outlet temperature be T51, out Air port 3,4 regional temperature of air outlet are T52, then make the following judgment:
If T51-T52 >=Tc, Tc are 3 DEG C, then it is handled as follows:
If Pz+P4≤P5, the refrigeration work consumption for controlling the first compressor 11 is improved, or control the first compressor 11 system The expansion valve opening of battery cooling circuit reduces in cold loop, and the expansion valve opening for controlling interior cooling circuit increases, Huo Zhetong When control the expansion valve of battery cooling circuit in 12 refrigerating circuit of the second compressor and increase, control the expansion of interior cooling circuit Valve opening is reduced, so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature It is balanced.
If Pz+P4 > P5, control the first compressor 11 and the second compressor 12 with the operation of maximum refrigeration work consumption, together When control the expansion valve opening of battery cooling circuit in 11 refrigerating circuit of the first compressor and reduce, control the swollen of interior cooling circuit Swollen valve opening increases, or controls the expansion valve increase of the battery cooling circuit in 12 refrigerating circuit of the second compressor, control simultaneously The expansion valve opening for making interior cooling circuit is reduced, so that T51 temperature accelerates decline, while meeting the cooling power need of battery again It asks, realizes environment inside car temperature equalization.
If T51-T52 >=Tc, Tc are 3 DEG C, can also be handled as follows:
The closing of battery cooling circuit in 11 refrigerating circuit of the first compressor is controlled, the expansion valve of interior cooling circuit is controlled Aperture increases, so that all refrigeration work consumptions of the first compressor 11 are all used for interior cooling.The second compressor 12 system is controlled simultaneously The expansion valve of battery cooling circuit in cold loop increases, and the expansion valve opening for controlling interior cooling circuit is reduced, and increases to electricity Pond cooling power so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature It is balanced.
In conclusion the humidity control system of on-vehicle battery according to an embodiment of the present invention, adjusts mould by battery temperature Block obtains temperature regulatory demand power and temperature adjusts actual power, and obtains the regional temperature and air-conditioning of multiple regions in vehicle Set temperature, and actual power, multiple regions temperature and air-conditioning set temperature are adjusted according to temperature regulatory demand power, temperature The aperture of multiple interior cooling branches, the cooling branch of multiple batteries and multiple refrigeration branches is adjusted, and according to battery Temperature regulatory demand power and temperature adjust actual power tune and state multiple compressors to the cooling branch offer of the corresponding battery of battery Refrigerating capacity aperture.The system is set according to multiple regions temperature in the virtual condition and compartment of each battery and air-conditioning as a result, Temperature is allocated the refrigerating capacity of battery and the compartment region Nei Ge, not only can be when battery temperature is excessively high or when too low Temperature is adjusted, the temperature of battery is made to maintain preset range, it can be with each regional temperature in balanced compartment and each electricity Temperature between pond.
When the humidity control system of on-vehicle battery includes multiple refrigeration branches and multiple electricity corresponding with multiple refrigeration branches Pond cools down branch, multiple interior cooling branch, multiple batteries and is connected between multiple batteries and the cooling branch of multiple batteries When multiple battery temperature adjustment modules, as shown in figure 25, the temperature control method of on-vehicle battery the following steps are included:
S1 " ", the temperature regulatory demand power P 1 and temperature for obtaining multiple batteries respectively adjust actual power P2.
According to one embodiment of present invention, the temperature regulatory demand power for obtaining multiple batteries respectively specifically includes: point The first parameter when each battery opening temperature is adjusted is not obtained, and the first temperature tune of each battery is generated according to the first parameter Save demand power.Second parameter of each battery when temperature is adjusted is obtained respectively, and each battery is generated according to the second parameter Second temperature regulatory demand power.According to the first temperature regulatory demand power and second temperature regulatory demand function of each battery Rate generates the temperature regulatory demand power P 1 of the cooling branch of battery.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature generate first according to the first parameter Temperature regulatory demand power specifically includes: obtaining the first temperature difference Δ T between initial temperature and target temperature1；According to first Temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of battery within a preset time, by following Formula (2) generates second temperature regulatory demand power:
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
When being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C* M/t-I2*R。
According to one embodiment of present invention, the temperature for obtaining multiple batteries adjusts actual power P2 and specifically includes: obtaining For adjusting the inlet temperature and outlet temperature of the flow path of multiple battery temperatures, and obtain the flow velocity v that coolant liquid flows into flow path.Root The second temperature difference Δ T of multiple batteries is generated according to the path inlet temperature and outlet temperature of multiple batteries2.According to multiple batteries Second temperature difference Δ T2Actual power P2 is adjusted with the flow velocity v temperature for generating multiple batteries.
Further, according to one embodiment of present invention, into practical according to temperature adjusting is generated by following formula (3) Power P 2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid.
S2 " " obtains the regional temperature Tq and air-conditioning set temperature Ts of multiple regions in vehicle respectively.
S3 " " adjusts actual power P2, multiple regions temperature Tq and air-conditioning and sets according to temperature regulatory demand power P 1, temperature Determine temperature Ts to be adjusted the aperture of multiple interior cooling branches, the cooling branch of multiple batteries and multiple refrigeration branches.Wherein, It is interconnected between the cooling branch of multiple batteries, and actual power is adjusted according to the temperature regulatory demand power P 1 and temperature of battery P2 adjusts the refrigerating capacity aperture that multiple compressors are provided to the cooling branch of the corresponding battery of battery.
Further, according to one embodiment of present invention, practical function is adjusted according to temperature regulatory demand power P 1, temperature Rate P2, multiple regional temperature Tq and air-conditioning set temperature Ts are in object time t to multiple interior cooling branches, multiple The aperture of the cooling branch of battery and multiple refrigeration branches is adjusted, to reach target temperature.
Wherein, battery can be with battery pack or battery modules.Each battery is arranged independently of each other.
Specifically, by taking refrigeration branch, the cooling branch of battery, interior cooling branch and battery are two as an example, battery difference For the first battery and the second battery, refrigeration branch is respectively the first refrigeration branch and the second refrigeration branch, the cooling branch point of battery Not Wei the cooling branch of the first battery and the cooling branch of the second battery, the cooling branch-path of car is respectively the first interior cooling branch With the second interior cooling branch.
When the temperature of the first battery and/or the second battery is excessively high/too low, need to the first battery and/or the second battery Carry out temperature adjusting.It obtains temperature regulatory demand power P 1 and temperature adjusts actual power P2, multiple electricity are adjusted according to P1 and P2 The aperture of the cooling branch in pond, with the cooling power of regulating cell, and obtains multiple regions temperature Tq and air-conditioning set temperature Ts, and The cooling branch aperture of each battery is controlled according to Tq and Ts, for example, if the Tq higher in some region and the Tq in other regions Differ larger, then the aperture for controlling the cooling branch of car in the cooling region increases, while controlling the cooling branch of corresponding battery Aperture reduce, meanwhile, the cooling power to guarantee battery is constant, and the aperture for controlling another cooling branch of car reduces, together When control the aperture of the cooling branch of corresponding battery and increase.As a result, in virtual condition and compartment of this method according to each battery Multiple regions temperature and air-conditioning set temperature are allocated the refrigerating capacity of battery and the compartment region Nei Ge, not only can be in electricity Pond when the temperature is excessively high or when too low is adjusted temperature, and the temperature of battery is made to maintain preset range, can be with balanced vehicle The temperature in the compartment region Nei Ge.Simultaneously as being interconnected between the cooling branch of multiple batteries, therefore can be according to each battery Temperature passes through the refrigerating capacity aperture of the cooling branch of the corresponding battery of regulating cell, it is ensured that temperature is equal between each battery Weighing apparatus.
It illustrates how to adjust practical function according to according to temperature regulatory demand power P 1, temperature below in conjunction with specific embodiment Rate P2, multiple regions temperature Tq and air-conditioning set temperature Ts cool down branches to multiple cars, multiple batteries cool down branch and multiple The aperture of refrigeration branch is adjusted.
An implementation according to the present invention, on-vehicle battery are multiple and are independently arranged, and interior cooling branch, battery are cooling When branch and refrigeration branch are multiple, the temperature control method of above-mentioned on-vehicle battery can also include: according to each battery Temperature regulatory demand power P 1 generates total moisture content regulatory demand power PZ.It is generated according to the maximum refrigeration work consumption P of multiple compressors Total maximum refrigeration work consumption P5 of multiple compressors.Judge total moisture content regulatory demand power PZWhether be greater than multiple compressors it is total most Big refrigeration work consumption P5.If total moisture content regulatory demand power PZIt, then will be more greater than total maximum refrigeration work consumption P5 of multiple compressors A compressor is adjusted to the refrigerating capacity aperture of the cooling branch of the corresponding battery of battery to maximum.If total moisture content regulatory demand power PZLess than or equal to total maximum refrigeration work consumption P5 of multiple compressors, then according to total moisture content regulatory demand power PZWith total maximum system The difference of cold power P 5 is adjusted the refrigerating capacity aperture of the cooling branch of the corresponding battery of battery.
Specifically, the total of entire humidity control system can be calculated according to the temperature regulatory demand power P 1 of each battery Temperature regulatory demand power PZ, i.e., total moisture content regulatory demand is can be obtained into the addition of temperature regulatory demand power P 1 of each battery Power PZ, while calculating according to the maximum refrigeration work consumption P of each compressor total maximum refrigeration work consumption P5 of multiple compressors, i.e., Total maximum refrigeration work consumption P5 is can be obtained into the maximum refrigeration work consumption P addition of each compressor.Next, it is determined whether PZ> P5, If it is, control is by the aperture regulation of each second expansion valve to maximum, by multiple compressors to the corresponding battery of battery The coolant rate of cooling branch is adjusted to maximum, so that battery can complete cooling in object time t.And if PZ≤ P5, then according to PZDifference between P5 is adjusted the aperture of the second expansion valve, wherein PZIt is got over the absolute value of P5 difference Greatly, the aperture of the second expansion valve is smaller, energy saving to achieve the purpose that.
According to one embodiment of present invention, the temperature control method of battery can be the following steps are included: detection be multiple The temperature of battery.When the temperature of any of multiple batteries battery is greater than the first temperature threshold, into refrigerating mode.When multiple When the temperature of any of battery battery is less than second temperature threshold value, into heating mode.Wherein, the first temperature threshold and second Temperature threshold can be preset according to the actual situation, for example, the first temperature threshold can be 40 DEG C, second temperature threshold value can be with It is 0 DEG C.
Specifically, after vehicle powers on, the temperature of each battery of real-time detection, and judged.If wherein some battery Temperature be higher than 40 DEG C, illustrate that the temperature of the battery at this time is excessively high, to avoid high temperature from having an impact the performance of the battery, need Cooling processing is carried out to the battery, into refrigerating mode, concurrent power transmission pond refrigerating function starts information to air-conditioning system.And if The temperature of some battery is lower than 0 DEG C, illustrates that the temperature of the battery at this time is too low, to avoid low temperature from generating shadow to the performance of the battery Sound needs to carry out heating treatment to the battery, into heating mode, controls the cooling branch of corresponding battery and closes, and controls and add Hot device is opened, to provide heating power for battery.
According to one embodiment of present invention, it when for refrigerating mode, is adjusted according to temperature regulatory demand power P 1, temperature Actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts are to multiple interior cooling branches, the cooling branch of multiple batteries It is adjusted and specifically includes with the aperture of multiple refrigeration branches: being greater than temperature in the temperature regulatory demand power P 1 of the cooling branch of battery When degree adjusts actual power P2, judge whether battery temperature is greater than third temperature threshold, wherein if battery temperature is greater than third Temperature threshold, then controller reduces the aperture of multiple interior cooling branches, and improves the aperture of the cooling branch of multiple batteries, In, the aperture of the cooling branch of multiple batteries is controlled respectively by corresponding valve (i.e. the second expansion valve), and third temperature threshold is big In the first temperature threshold, such as third temperature threshold can be 45 DEG C.
Specifically, when for refrigerating mode, if P1 is greater than P2, judge whether the temperature of battery is greater than 45 DEG C.If The temperature of any one battery is greater than 45 DEG C, illustrates that the temperature of present battery is excessively high, reduces the aperture of the first expansion valve 32, to reduce The coolant rate of the cooling branch of car, while increasing the aperture of the second expansion valve 42, to increase the cooling of the cooling branch of battery Flow quantity.It, can be excessively high in battery temperature as a result, by adjusting the refrigerating capacity distribution of interior cooling branch and the cooling branch of battery When within the object time complete battery temperature adjust.
According to one embodiment of present invention, when being refrigerating mode, the temperature control method of battery further include: judgement is each Whether the temperature regulatory demand power P 1 of battery, which is greater than the corresponding temperature of each battery, adjusts actual power P2.If some battery Temperature regulatory demand power P 1 be greater than battery temperature adjust actual power P2 when, then obtain the temperature regulatory demand function of battery Rate P1 and temperature adjust the difference power between actual power P2, and increase the compressor of the cooling for battery according to difference power Power, or the coolant rate for increasing the loop branches circuit of battery is adjusted, to increase the cooling power of battery.If some The temperature that the temperature regulatory demand power P 1 of battery is less than or equal to battery adjusts actual power P2, then reduces the power of compressor Or keep the power of compressor constant, or adjust the coolant rate for reducing the loop branches circuit of battery, to reduce battery Cooling power.
Specifically, when work in refrigerating mode, if battery be it is multiple, obtain the P1 and P2 of each battery respectively, and Judged.If wherein the P1 of some battery is greater than P2, illustrate if according to current refrigeration work consumption or cooling liquid stream Amount, can not complete the cooling of the battery within the object time, so, obtain the difference power between the P1 of the battery and P2, and root Increase the power of compressor according to difference power, or increase the coolant rate in the loop branches circuit of the battery, to increase the electricity The cooling power in pond, wherein the difference power of P1 and P2 is bigger, and the power of compressor and the coolant rate increase of the battery are got over It is more, so that the temperature of the battery is reduced to target temperature in preset time t.And if wherein the P1 of some battery be less than or Equal to P2, the power of compressor can be kept constant or the appropriate power for reducing compressor, or reduce the circulation point of the battery The coolant rate of branch circuit reduces the cooling power of battery.When the temperature of all batteries is lower than 35 DEG C, then battery has cooled down At by CAN communication to the information of on-board air conditioner transmission closing temperature regulatory function, and the second electronic valve of control is closed.If After humidity control system enters the refrigerating mode long period, such as after 1 hour, still there is the temperature of battery to be higher than 35 DEG C, then fit again When the power for increasing compressor, so that the battery is completed to cool down as early as possible.
According to one embodiment of present invention, if battery temperature is less than third temperature threshold, further described in judgement Whether vehicle interior temperature is equal to air-conditioning set temperature Ts；If vehicle interior temperature is equal to air-conditioning set temperature Ts, multiple cars are reduced The aperture of cooling branch, and improve the aperture of the cooling branch of multiple batteries.
Specifically, when for refrigerating mode, if the temperature of each battery is both less than 45 DEG C, controller judges vehicle interior temperature Whether air-conditioning set temperature Ts is reached.If reached, increase the coolant rate of the cooling branch of battery, reduces interior cooling branch The coolant rate on road completes the cooling of battery as early as possible.And if vehicle interior temperature does not reach air-conditioning set temperature Ts, preferentially Meet interior refrigeration demand, controller increases the coolant rate of interior cooling branch, and reduces the cold of the cooling branch of battery But flow quantity.
In addition, also being handled by different level to having done to battery temperature, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 ℃.When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature is reduced to 35 DEG C, then battery is cooling is completed. When battery temperature reaches 45 DEG C, preferentially meet battery cooling requirement.In addition, temperature regulatory demand power P 1 is adjusted greater than temperature When actual power P2, if battery temperature is no more than 45 DEG C, still preferential interior refrigeration demand, if interior refrigeration function Rate is sufficient, and reaches balance, then increases the aperture of the cooling branch of battery, to increase the cooling power of battery.And if temperature When spending regulatory demand power P 1 less than or equal to temperature adjusting actual power P2, it can preferentially meet interior refrigeration demand.
According to one embodiment of present invention, the aperture for reducing multiple interior cooling branches specifically includes: obtaining multiple areas Temperature difference between the temperature of domain.Judge whether temperature difference is greater than the 4th temperature threshold.If temperature difference is greater than the 4th temperature threshold When, then the aperture of the corresponding interior cooling branch of refrigeration branch where the high air outlet of temperature is increased, and go out temperature is high The aperture of the cooling branch of the corresponding battery of refrigeration branch where air port reduces.Wherein, the 4th temperature threshold can be according to practical feelings Condition is preset, such as can be 3 DEG C.
Further, according to one embodiment of present invention, the temperature control method of on-vehicle battery further include: temperature is low Air outlet where the aperture of the corresponding interior cooling branch of refrigeration branch reduce, and will refrigeration branch where the low air outlet of temperature The aperture of the cooling branch of the corresponding battery in road improves.
Specifically, it in battery cooling procedure, if car needs to open air-conditioning, needs to the environment temperature in compartment It is monitored and controls, so that interior environment temperature everywhere is kept in balance, while being able to satisfy the cooling requirement of battery again.Such as figure Shown in 21, when detecting that regional temperature Tq is than near zone temperature Tq at air outlet 3 and air outlet 4 at air outlet 1 and air outlet 2 At high 3 DEG C or more, increases the aperture in the first interior cooling branch, reduce the aperture in the cooling branch of the first battery, so that the Cooling power in one interior cooling branch is larger.Also reduce the cold aperture in the second interior cooling branch, increases the second battery The aperture of cooling branch, so that the cooling power in the second interior cooling branch is smaller.Thus, it is possible to keep the first battery cooling and The cooling power of the cooling branch of second battery is constant, while making interior air outlet near zone temperature everywhere balanced again.Work as vehicle Carry detection of air-conditioning near zone temperature Tq near zone temperature Tq and air outlet 3, air outlet 4 at air outlet 1, air outlet 2 For difference when within 3 DEG C, the first expansion valve opening in the interior cooling branch of control first and the second interior cooling branch is identical, Cooling power to guarantee the first interior cooling branch and the second interior cooling branch is identical.
According to one embodiment of present invention, when for heating mode, further includes: judging that the temperature of some battery is adjusted needs The temperature for asking power P 1 whether to be greater than battery adjusts actual power P2.If the temperature regulatory demand power P 1 of some battery is greater than The corresponding temperature of battery adjusts actual power P2, then the temperature regulatory demand power P 1 and temperature for obtaining the battery adjust practical function Difference power between rate P2, and the power for cooling down the heater of battery is increased according to difference power, or adjust and increase battery Loop branches circuit coolant rate, to increase the heating power of battery.If the temperature regulatory demand function of some battery Rate P1 is less than or equal to the corresponding temperature of battery and adjusts actual power P2, then reduces the power of heater or keep the function of heater Rate is constant, or adjusts the coolant rate for reducing the loop branches circuit of battery, to reduce the heating power of battery.
Specifically, when for heating mode, the P1 and P2 of each battery are obtained respectively, and are judged.If wherein certain The P1 of one battery is greater than P2, illustrates if according to current heating power or coolant rate, can not be within the object time The heating of the battery is completed, so, the difference power between the P1 of the battery and P2 is obtained, and increase for heating according to difference power The power of the heater of battery, or the revolving speed by adjusting corresponding pump improve, to increase the loop branches circuit of the battery Coolant rate so that the battery can be completed in object time t temperature adjusting.Wherein, the difference of P1 and P2 is bigger, adds The power of hot device is increased more.And if the P1 of some battery is less than or equal to P2, it can suitably reduce the power of heater, To save electric energy, or the revolving speed by adjusting corresponding pump reduces the cooling liquid stream for reducing the loop branches circuit of the battery Amount to reduce heating power, or keeps the power of heater constant.When the temperature of all batteries is higher than preset temperature, such as 10 DEG C when, battery heating is completed, and is sent the information of closing temperature regulatory function to on-board air conditioner by CAN communication, and is controlled heating Device is closed.If still thering is the temperature of battery to be lower than after humidity control system enters the heating mode long period, such as after 1 hour 10 DEG C, then suitably increase the power of heater again, so that the battery is completed to heat up as early as possible.
According to one embodiment of the present of invention, if the temperature control method of on-vehicle battery can also include: some battery Temperature regulatory demand power P 1 is less than corresponding temperature and adjusts actual power P2, then reduces the revolving speed pumped in the flow path of battery；Such as The temperature regulatory demand power P 1 of some battery of fruit is greater than corresponding temperature adjusting actual power P2, then in the flow path for improving battery The revolving speed of pump.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of some battery is less than P2, controlling the revolving speed pumped accordingly reduces, to save electric energy.And if the P1 of some battery is greater than P2, controller is except control phase The power of the heater or compressor answered increases or the coolant rate increase in battery place circuit is outer, also controls the revolving speed of pump It improves, the coolant liquid quality for flowing through cooling flowing path cross section in the unit time can be increased, to improve the temperature tune of the battery Actual power P2 is saved, to realize that temperature is adjusted in object time t.
Compared with Figure 24 humidity control system shown in Figure 11 A-11B, interior cooling circuit is increased.It only lists below not Same, remaining does not do wadding and states.
As shown in figure 24, when battery, interior cooling circuit, battery cooling circuit are multiple, and multiple batteries are independently arranged When, when humidity control system enters refrigerating mode, controller obtains the P1 of each battery respectively, the temperature of each battery is adjusted The maximum refrigeration work consumption P of actual power P2 and single compressor, and the P1 of each battery addition can be calculated into entire temperature tune The total moisture content regulatory demand power P of section systemZ, the temperature of each battery is adjusted into actual power P2 and is added to obtain total moisture content adjusting The maximum refrigeration work consumption of each compressor is added the sum of the maximum refrigeration work consumption that can calculate all compressors by actual power Pf P5.Wherein, the temperature regulatory demand power of the first battery is P11, and the temperature regulatory demand power of the second battery is P12.First It is P21 that the temperature of battery, which adjusts actual power, and it is P22 that the temperature of the second battery, which adjusts actual power,.P51 is the first compressor 11 Maximum refrigeration work consumption, P52 are the maximum refrigeration work consumption of the second compressor.
If Pz≤P51, only needs to control a compressor operating, refrigeration work consumption is provided, also can control two Compressor works together.If P51 < Pz≤P5 needs two compressors to work together, the initial refrigeration of each compressor Power is Pz/2, or other power combination forms, so that the sum of refrigeration work consumption of 2 compressors is Pz.If Pz > P5, Then each compressor is run according to maximum refrigeration work consumption.
Cooling in the car and battery is cooling when opening simultaneously, it is assumed that air outlet 1,2 region of air outlet temperature be T51, out Air port 3,4 regional temperature of air outlet are T52, then make the following judgment:
If T51-T52 >=Tc, Tc are 3 DEG C, then it is handled as follows:
If Pz+P4≤P5, the refrigeration work consumption for controlling the first compressor is improved, or the first compressor refrigeration of control is returned The expansion valve opening of battery cooling circuit reduces in road, and the expansion valve opening for controlling interior cooling circuit increases or same time control The expansion valve for making the battery cooling circuit in the second compression mechanism cold loop increases, and controls the expansion valve opening of interior cooling circuit It reduces, so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realize environment inside car temperature equalization.
If Pz+P4 > P5, control the first compressor 11 and the second compressor 12 with the operation of maximum refrigeration work consumption, together When control the expansion valve opening of battery cooling circuit in 11 refrigerating circuit of the first compressor and reduce, control the swollen of interior cooling circuit Swollen valve opening increases, or controls the expansion valve increase of the battery cooling circuit in the second compression mechanism cold loop, control simultaneously The expansion valve opening of interior cooling circuit is reduced, so that T51 temperature accelerates decline, while meeting the cooling power need of battery again It asks, realizes environment inside car temperature equalization.
If T51-T52 >=Tc, Tc are 3 DEG C, can also be handled as follows:
The closing of battery cooling circuit in the first compression mechanism cold loop is controlled, the expansion valve for controlling interior cooling circuit is opened Degree increases, so that all refrigeration work consumptions of the first compressor are all used for interior cooling.The second compression mechanism cold loop is controlled simultaneously In the expansion valve of battery cooling circuit increase, the expansion valve opening for controlling interior cooling circuit is reduced, and is increased cooling to battery Power so that T51 temperature accelerates decline, while meeting the cooling power demand of battery again, realizes environment inside car temperature equalization.
The temperature control method of on-vehicle battery according to an embodiment of the present invention, firstly, obtaining the temperature of multiple batteries respectively Regulatory demand power and temperature adjust actual power, and then, the regional temperature and air-conditioning for obtaining multiple regions in vehicle respectively are set Fixed temperature adjusts actual power, multiple regions temperature and air-conditioning set temperature to multiple further according to temperature regulatory demand power, temperature The aperture of the cooling branch of car, the cooling branch of multiple batteries and multiple refrigeration branches is adjusted.This method is according to each as a result, Multiple regions temperature and air-conditioning set temperature in the virtual condition and compartment of battery, to the refrigerating capacity of battery and the compartment region Nei Ge It is allocated, temperature can be not only adjusted when battery temperature is excessively high or when too low, maintain the temperature of battery Preset range, can be with the temperature in balanced compartment between each regional temperature and each battery.
When battery is one, and refrigeration branch, interior cooling branch and the cooling branch of battery are multiple, on-vehicle battery Humidity control system includes: that multiple refrigeration branches, multiple interior cooling branches, the cooling branch of multiple batteries and battery temperature are adjusted Module 5.
Wherein, as shown in figure 26, each refrigeration branch includes compressor 1, the condenser being connected with compressor 12.Multiple vehicles Interior cooling branch is connected with multiple refrigeration branches respectively.Battery temperature adjustment module 5 is connected with battery 6 and the cooling branch of battery, Actual power P2 is adjusted for obtaining temperature regulatory demand power P 1 and temperature, and obtains the regional temperature of multiple regions in vehicle Tq and air-conditioning set temperature Ts, and actual power P2, multiple regions temperature are adjusted according to temperature regulatory demand power P 1, temperature Tq and air-conditioning set temperature Ts carries out the power of multiple interior cooling branches, the cooling branch of multiple batteries and multiple refrigeration branches Adjustment.
Wherein, battery can be with battery pack or battery modules.
Further, according to one embodiment of present invention, battery temperature adjustment module 5 is according to institute's temperature regulatory demand function Rate P1, temperature adjust actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts in object time t to multiple The power of the cooling branch of car, the cooling branch of multiple batteries and multiple refrigeration branches is adjusted, to reach target temperature.Work as electricity When the temperature in pond is excessively high or too low, need to carry out temperature adjusting to battery.The temperature of the acquisition battery 6 of battery temperature adjustment module 5 It spends regulatory demand power P 1 and temperature adjusts actual power P2, the aperture of the cooling branch of multiple batteries is adjusted according to P1 and P2, with The cooling power of regulating cell, and battery temperature adjustment module 5 obtains multiple regions temperature Tq and air-conditioning set temperature Ts, and root The cooling branch aperture of each battery is controlled according to Tq and Ts, for example, if the Tq higher in some region and the Tq phase in other regions Difference is larger, then the aperture that battery temperature adjustment module 5 controls the cooling branch of car in the cooling region increases, while controlling corresponding The aperture of the cooling branch of battery reduce, meanwhile, the cooling power to guarantee battery is constant, and battery temperature adjustment module 5 controls The aperture of the cooling branch of another car reduces, while the aperture for controlling the cooling branch of corresponding battery increases.The system as a result, According to multiple regions temperature in the virtual condition of battery and compartment and air-conditioning set temperature, to the system of battery and the compartment region Nei Ge Cooling capacity is allocated, and temperature can be not only adjusted when battery temperature is excessively high or when too low, and the temperature of battery is tieed up It holds in preset range, it can be with the temperature in the region balanced compartment Nei Ge.
It is appreciated that the refrigeration work consumption of battery temperature adjustment module 5 is provided by on-board air conditioner, shared with interior refrigeration system Refrigerating capacity so as to reduce the volume of humidity control system, and keeps the distribution of coolant rate more flexible.
According to one embodiment of present invention, the cooling branch of battery may include heat exchanger 41, heat exchanger 41 and battery temperature Adjustment module 5 is spent to be connected.Heat exchanger 41 may include first pipe and second pipe, second pipe and battery temperature adjustment module 5 are connected, and first pipe is connected with compressor 1, wherein first pipe and second pipe is mutually independent closes on setting.Battery Temperature adjustment module 5 includes: the flow path (not specifically illustrated in figure) of regulating cell temperature, and flow path is arranged among battery.Connection Pump 51, media Containers 52, heater 53 and controller (not specifically illustrated in figure) between flow path and heat exchanger 41.Its In, controller obtains the temperature regulatory demand power P 1 of battery and the temperature of battery adjusts actual power P2, and according to temperature tune Section demand power P1 and temperature adjust actual power P2 and the temperature of battery are adjusted.The cooling branch of car may include: to steam Send out device 31, the first expansion valve 32 and the first electronic valve 33.The cooling branch 4 of battery can also include the second expansion valve 42 and the second electricity Sub- valve 43.
Specifically, heat exchanger 41 can be plate heat exchanger, and plate heat exchanger may be mounted inside on-board air conditioner, so that Entire refrigerant circuit convenient for on-board air conditioner factory debugging, and supplies that on-board air conditioner individually inside on-board air conditioner Goods and assembling, meanwhile, on-board air conditioner only needs to fill primary coolant during the installation process.Coolant liquid is flowed into from the entrance of flow path The inside of battery is flowed out from the outlet of flow path, to realize the heat exchange between battery and coolant liquid.
Pump 51 is mainly used for providing power, and media Containers 52 are mainly used for storing coolant liquid and receive to humidity control system The coolant liquid of addition, when the coolant liquid in humidity control system is reduced, the coolant liquid in media Containers 52 can be automatically replenished.Add Hot device 53 can be ptc heater, can with controller carry out CAN communication, for on-vehicle battery humidity control system provide add Thermal power is controlled by the controller.And heater 53 is not direct contacts with battery 6, safety with higher, reliability and practical Property.
Temperature of first temperature sensor 55 to detect path inlet coolant liquid, second temperature sensor 56 is to detect The temperature of flowing path outlet coolant liquid.Flow rate information of the flow sensor 57 to detect coolant liquid in corresponding pipeline.Second electronics For valve 43 to control opening and closing for the cooling branch of corresponding battery, the second expansion valve 42 can be used for the battery of control response Coolant rate in cooling branch.
Illustrate how that obtaining temperature regulatory demand power P 1 and temperature adjusts actual power below with reference to specific embodiment P2。
According to one embodiment of present invention, controller can be used for obtaining first when battery opening temperature is adjusted respectively Parameter, and according to the first temperature regulatory demand power of the first parameter generation battery, and obtain battery respectively and adjusted in temperature When the second parameter, and generate according to the second parameter the second temperature regulatory demand power of battery, and according to the first of battery the temperature Spend the temperature regulatory demand power P 1 of the second temperature regulatory demand power generation battery of regulatory demand power and battery.
Further, according to one embodiment of present invention, the first parameter is initial temperature when battery opening temperature is adjusted Degree and target temperature and the object time t for reaching target temperature from initial temperature, controller obtain initial temperature and target temperature The first temperature difference Δ T between degree1, and according to the first temperature difference Δ T1The first temperature regulatory demand function is generated with object time t Rate.
Further, controller generates the first temperature regulatory demand power by following formula (1):
ΔT1* (1) C*M/t,
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is battery 6 Specific heat capacity, M are the quality of battery.
Second parameter is the average current I of battery within a preset time, and controller generates the second temperature by following formula (2) Spend regulatory demand power:
I2* R, (2),
Wherein, I is average current, and R is the internal resistance of battery 6.
When being cooled down to battery 6, P1=Δ T1*C*M/t+I2*R；When being heated to battery 6, P1=Δ T1* C*M/t-I2*R。
According to one embodiment of present invention, controller respectively according to the first temperature sensor 55 detection inlet temperature and The outlet temperature that second temperature sensor 56 detects generates the second temperature difference Δ T of battery2, and it is poor according to the second temperature of battery ΔT2Actual power P2 is adjusted with the flow velocity v that flow sensor 57 the detects temperature for generating battery.
Further, according to one embodiment of present invention, the practical function of temperature adjusting is generated according to by following formula (3) Rate P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid.
Specifically, as shown in figure 26, after vehicle powers on, controller judges whether battery 6 needs to carry out temperature adjusting, if Judge that battery 6 needs temperature to adjust, then opening temperature regulatory function, and send slow-speed of revolution information to pump 51, pumps to default revolving speed (such as slow-speed of revolution) starts to work.The initial temperature (i.e. Current Temperatures) of available 6 battery of controller, target temperature and from initial Temperature reaches the object time t of target temperature, and wherein target temperature and object time t can be preset according to the actual situation, And the first temperature regulatory demand power of 6 batteries is calculated according to formula (1).Meanwhile controller obtains battery 6 when default Interior average current I, and according to the second temperature regulatory demand power of formula (2) calculating battery 6.Then, controller is distinguished According to the first temperature regulatory demand power of battery and second temperature regulatory demand power calculation temperature regulatory demand power P 1.And And controller obtains the first temperature sensor 55 and second temperature sensor 56 detects temperature information, and obtains flow velocity respectively and pass The flow rate information of sensor detection adjusts actual power P2 according to the temperature that formula (3) calculates battery.
Below in conjunction with the description of specifically embodiment how according to temperature regulatory demand power P 1, temperature adjusting actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts are to multiple interior cooling branches of cooling branch (30 and 30) multiple batteries The aperture of (401 and 402) and multiple refrigeration branches (11 and 12) is adjusted.
According to one embodiment of present invention, controller is also used to, for the maximum refrigeration work consumption P according to multiple compressors Total maximum refrigeration work consumption P5 of multiple compressors is generated, and judges whether temperature regulatory demand power P 1 is greater than multiple compressors Total maximum refrigeration work consumption P5, wherein when temperature regulatory demand power P 1 is greater than total maximum refrigeration work consumption P5 of multiple compressors When, controller adjusts the refrigerating capacity aperture of the cooling branch of multiple batteries to maximum；Be less than when temperature regulatory demand power P 1 or Equal to multiple compressors total maximum refrigeration work consumption P5 when, controller is according to temperature regulatory demand power P 1 and total maximum function that freezes The difference of rate P5 is adjusted the refrigerating capacity aperture of the cooling branch of battery.
Specifically, as shown in figure 26, controller can calculate multiple pressures according to the maximum refrigeration work consumption P of each compressor Total maximum refrigeration function can be obtained in the maximum refrigeration work consumption P addition of each compressor by total maximum refrigeration work consumption P5 of contracting machine Rate P5.Then, controller judges whether P1 > P5, if it is, controller by the aperture regulation of each second expansion valve 42 extremely Maximum adjusts multiple compressors 1 to maximum to the coolant rate of the cooling branch of the corresponding battery of battery, so that battery 6 Cooling can be completed in object time t.And if P1≤P5, controller is expanded according to the difference between P1 and P5 to second The aperture of valve 42 is adjusted, wherein the absolute value of P1 and P5 difference is bigger, and the aperture of the second expansion valve 42 is smaller, to reach Energy saving purpose.
According to one embodiment of present invention, controller is also used to detect the temperature of battery, and is greater than in the temperature of battery When the first temperature threshold, control humidity control system enters refrigerating mode, and is less than second temperature threshold value in the temperature of battery When, control humidity control system enters heating mode.Wherein, the first temperature threshold and second temperature threshold value can be according to practical feelings Condition is preset, for example, the first temperature threshold can be 40 DEG C, second temperature threshold value can be 0 DEG C.
Specifically, after vehicle powers on, the temperature of controller real-time detection battery, and judged.If wherein battery Temperature is higher than 40 DEG C, illustrates that the temperature of battery 6 at this time is excessively high, to avoid high temperature from having an impact the performance of battery 6, needs to this Battery 6 carries out cooling processing, and controller control humidity control system enters refrigerating mode, concurrent power transmission pond refrigerating function starting letter It ceases and is opened to air-conditioning system, and the second electronic valve 43 of control, so that coolant liquid and battery carry out heat exchange to reduce the battery Temperature.
And if the temperature of battery is lower than 0 DEG C, illustrate that the temperature of battery 6 at this time is too low, to avoid low temperature to the battery Performance has an impact, and needs to carry out the battery 6 heating treatment, and controller control humidity control system enters heating mode, controls The closing of the second electronic valve 43 is made, and controls the unlatching of heater 53, to provide heating power for humidity control system.
According to one embodiment of present invention, when for refrigerating mode, controller is also used to, in the temperature of the cooling branch of battery When spending regulatory demand power P 1 greater than temperature adjusting actual power P2, judge whether battery temperature is greater than third temperature threshold, In, if battery temperature is greater than third temperature threshold, controller reduces the aperture of multiple interior cooling branches, and improves multiple The aperture of the cooling branch of battery, wherein the aperture of the cooling branch of battery passes through corresponding valve (i.e. the second expansion valve 42) difference Control, third temperature threshold are greater than the first temperature threshold, such as third temperature threshold can be 45 DEG C.
Specifically, when for refrigerating mode, if P1 is greater than P2, controller judges whether the temperature of battery is greater than 45 ℃.If the temperature of battery is greater than 45 DEG C, illustrate that the temperature of present battery 6 is excessively high, controller reduces opening for the first expansion valve 32 Degree to reduce the coolant rate of interior cooling branch, while increasing the aperture of the second expansion valve 42, to increase the cooling branch of battery The coolant rate on road.It, can be in battery as a result, by adjusting the refrigerating capacity distribution of interior cooling branch and the cooling branch of battery The temperature for completing battery within the object time when the temperature is excessively high is adjusted.
According to one embodiment of present invention, be refrigerating mode when, controller is also used to the temperature regulatory demand in battery When the temperature that power P 1 is greater than battery adjusts actual power P2, the temperature regulatory demand power P 1 and temperature for obtaining battery are adjusted Difference power between actual power P2, and increase the power for being used for the compressor 1 of cooling of battery according to difference power, or adjust Increase the coolant rate in the loop branches circuit of battery, to increase the cooling power of battery, or the temperature adjusting in battery The temperature that demand power P1 is less than or equal to battery adjusts actual power P2, reduces the power of compressor or keeps the function of compressor Rate is constant, or adjusts the coolant rate for reducing the loop branches circuit of battery, to reduce the cooling power of battery.
Specifically, when work is in refrigerating mode, controller obtains the P1 and P2 of battery 6, and is judged.If P1 Greater than P2, illustrate if the drop of battery 6 can not be completed within the object time according to current refrigeration work consumption or coolant rate Temperature, so, controller obtains the difference power between the P1 and P2 of battery 6, and increases the power of compressor 1 according to difference power, or Person increases the coolant rate in the loop branches circuit of the battery, to increase the cooling power of the battery, wherein P1's and P2 Difference power is bigger, and the power of compressor and the coolant rate increase of the battery are more, so that the temperature of the battery is when default Between be reduced to target temperature in t.And if the P1 of battery 6 is less than or equal to P2, the power of compressor can be kept constant or appropriate Reduce the power of compressor, or reduce the coolant rate in the loop branches circuit of battery, reduces the cooling power of battery.When When the temperature of battery is lower than 35 DEG C, then battery is cooling completes, and controller sends closing temperature tune to on-board air conditioner by CAN communication The information of function is saved, and controls the second electronic valve 43 and closes.After if humidity control system entered the refrigerating mode long period, example As after 1 hour, the temperature of battery is still higher than 35 DEG C, then controller suitably increases the power of compressor again, so that battery 6 is as early as possible Complete cooling.
According to one embodiment of present invention, controller is also used to be less than third temperature threshold, and vehicle in the temperature of battery When interior temperature is equal to air-conditioning set temperature Ts, the aperture of multiple interior cooling branches is reduced, and improves the cooling branch of multiple batteries Aperture.
Specifically, when for refrigerating mode, if the temperature of battery, less than 45 DEG C, controller judges whether vehicle interior temperature reaches To air-conditioning set temperature Ts.If reached, controller reduces the aperture of the first expansion valve 32, and increases the second expansion valve 42 Aperture reduce the coolant rate of interior cooling branch to increase the coolant rate of the cooling branch of battery, complete electricity as early as possible The cooling in pond.And if vehicle interior temperature does not reach air-conditioning set temperature Ts, it is preferential to meet interior refrigeration demand, controller Increase the aperture of the first expansion valve 32, and reduces the aperture of the second expansion valve 42.
In addition, also being handled by different level to having done to battery temperature, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 ℃.When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature is reduced to 35 DEG C, then battery is cooling is completed. When battery temperature reaches 45 DEG C, preferentially meet battery cooling requirement.In addition, temperature regulatory demand power P 1 is adjusted greater than temperature When actual power P2, if battery temperature is no more than 45 DEG C, still preferential interior refrigeration demand, if interior refrigeration function Rate is sufficient, and reaches balance, then controller increases the aperture of the cooling branch of battery, to increase the cooling power of battery.And If temperature regulatory demand power P 1 is less than or equal to temperature adjusting actual power P2, it can preferentially meet interior refrigeration demand.
In one embodiment of the invention, multiple refrigeration branches respectively correspond multiple air outlets, and multiple regions temperature is The temperature of multiple air outlets.
For example, as shown in figure 21,4 air outlets, respectively air outlet 1- air outlet 4 can be set in compartment.It is logical It crosses detection air port temperature Tc and detects corresponding regional temperature Tq.Assuming that air outlet 1 and air outlet 2 are by the first refrigeration branch 11 Refrigeration work consumption is provided, air port 3 and air outlet 4 is set out by the second refrigeration branch 12 and refrigeration work consumption is provided.
According to one embodiment of present invention, controller is also used to obtain the temperature difference between multiple regions temperature, and When temperature difference is greater than four temperature thresholds, by the aperture of the corresponding interior cooling branch of refrigeration branch where the high air outlet of temperature Increase, and the aperture of the cooling branch of the corresponding battery of refrigeration branch where the high air outlet of temperature is reduced.Wherein, the 4th temperature Threshold value can be preset according to the actual situation, such as can be 3 DEG C.
Further, according to one embodiment of present invention, controller is also used to refrigeration where the low air outlet of temperature The aperture of the corresponding interior cooling branch of branch reduces, and the corresponding battery of refrigeration branch where the low air outlet of temperature is cooling The aperture of branch improves.
Specifically, it in battery cooling procedure, if car needs to open air-conditioning, needs to the environment temperature in compartment It is monitored and controls, so that interior environment temperature everywhere is kept in balance, while being able to satisfy the cooling requirement of battery again.Such as figure Shown in 21, when detecting that regional temperature Tq is than near zone temperature Tq at air outlet 3 and air outlet 4 at air outlet 1 and air outlet 2 At high 3 DEG C or more, the aperture of the first expansion valve 32 in the interior cooling branch 301 of control first increases, while controlling the first electricity The aperture of the second expansion valve 42 in the cooling branch 401 in pond reduces, so that the cooling power in the first interior cooling branch 301 increases Add.The aperture that controller also controls the first expansion valve 32 in the second interior cooling branch 302 reduces, the cooling branch of the second battery The aperture of the second expansion valve 42 in 402 increases, so that the cooling power in the second interior cooling branch 302 is smaller.As a result, may be used So that the cooling power of the first battery cooling 301 and the cooling branch 302 of the second battery is constant, while making interior outlet air everywhere again Mouth near zone temperature is balanced.When on-board air conditioner detects air outlet 1, near zone temperature Tq and air outlet 3 at air outlet 2, Near zone temperature Tq difference is when within 3 DEG C at air outlet 4, the interior cooling branch 301 of controller control first and the second vehicle 32 aperture of the first expansion valve in interior cooling branch 302 is identical, to guarantee that the first interior cooling branch 301 and second is interior cooling The cooling power of branch 302 is identical.
According to one embodiment of present invention, when for heating mode, temperature regulatory demand power of the controller in battery When the temperature that P1 is greater than battery adjusts actual power P2, the temperature regulatory demand power P 1 and temperature for obtaining battery adjust practical function Difference power between rate P2, and the power for heating the heater 53 of battery is increased according to difference power, or adjust and increase electricity The coolant rate in the loop branches circuit in pond, to increase the heating power of battery, and the temperature regulatory demand function in battery When the temperature that rate P1 is less than or equal to battery adjusts actual power P2, reduces the power of heater 53 or keep heater 53 Power is constant, or adjusts the coolant rate for reducing the loop branches circuit of battery, to reduce the heating power of battery.
Specifically, when for heating mode, controller obtains the P1 and P2 of battery 6, and is judged.If P1 is greater than P2 illustrates if can not complete the heating of battery 6 within the object time according to current heating power or coolant rate, So controller obtains the difference power between the P1 and P2 of battery 6, and the heating for heating battery 6 is increased according to difference power The power of device 53, or the revolving speed by adjusting pump 51 improve, to increase the coolant rate in the loop branches circuit of the battery, So that the battery can complete temperature adjusting in object time t.Wherein, the difference of P1 and P2 is bigger, the power of heater 53 It is increased more.And if the P1 of battery 6 is less than or equal to P2, controller can suitably reduce the power of heater 53, with section Electric energy is saved, or the revolving speed by adjusting pump 51 reduces the coolant rate for reducing the loop branches circuit of the battery 6, to reduce Heating power, or keep the power of heater 53 constant.When the temperature of battery is higher than preset temperature, such as at 10 DEG C, battery 6 plus Heat is completed, and controller sends the information of closing temperature regulatory function by CAN communication to on-board air conditioner, and controls the pass of heater 53 It closes.If the temperature of battery 6 still is below 10 after humidity control system enters the heating mode long period, such as after 1 hour DEG C, then controller suitably increases the power of heater 53 again, so that battery 6 completes heating as early as possible.
According to one embodiment of present invention, controller is also used to small in the temperature regulatory demand power P 1 of some battery When corresponding temperature adjusts actual power P2, the revolving speed of pump 51 is reduced, and in the temperature regulatory demand power P 1 of some battery When adjusting actual power P2 greater than corresponding temperature, the revolving speed of pump 51 is improved.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of battery 6 is less than P2, The revolving speed of controller control pump 51 reduces, to save electric energy.And if the P1 of battery 6 is greater than P2, controller is corresponding except control The power of heater 53 or compressor 1 increases or the increase of the coolant rate in 6 place circuit of battery is outer, also controls turning for pump 51 Speed improves, and can increase the coolant liquid quality that cooling flowing path cross section is flowed through in the unit time, to improve the temperature of battery 6 Actual power P2 is adjusted, to realize that temperature is adjusted in object time t.
It is appreciated that the regulative mode of the battery temperature adjustment module 5 of system shown in Figure 26 is similar with Figure 19 A-19B, Difference is Figure 26 single battery packet, and Figure 19 A-19B is 2 battery pack series connection, to middle Figure 26 institute in an embodiment of the present invention The undisclosed details of temperature adjustment process for the system shown, specifically can refer to above-described embodiment, no longer superfluous herein to avoid redundancy It states.
The humidity control system of on-vehicle battery according to an embodiment of the present invention obtains temperature by battery temperature adjustment module Regulatory demand power and temperature adjust actual power, and obtain the regional temperature of multiple regions and air-conditioning set temperature in vehicle, And actual power, multiple regions temperature and air-conditioning set temperature are adjusted to multiple vehicles according to temperature regulatory demand power, temperature The aperture of the cooling branch of interior cooling branch, multiple batteries and multiple refrigeration branches is adjusted.The system is according to battery as a result, Multiple regions temperature and air-conditioning set temperature in virtual condition and compartment, divide the refrigerating capacity of battery and the compartment region Nei Ge Match, temperature can be not only adjusted when battery temperature is excessively high or when too low, the temperature of battery is made to maintain default model It encloses, it can be with each regional temperature in balanced compartment.
Figure 27 is the flow chart of the temperature control method of the on-vehicle battery of the tenth one embodiment according to the present invention.Wherein, As shown in figure 26, the humidity control system of on-vehicle battery includes multiple refrigeration branches and corresponding with multiple refrigeration branches multiple Battery cools down branch, multiple interior cooling branches, battery and the electricity being connected between the battery and the cooling branch of multiple batteries Pond temperature adjustment module, the cooling branch of each battery includes a heat exchanger；As shown in figure 27, the temperature control method include with Lower step:
S1 " " ', the temperature regulatory demand power P 1 and temperature for obtaining battery respectively adjust actual power P2.
According to one embodiment of present invention, the temperature regulatory demand power for obtaining battery specifically includes: obtaining battery and opens The first parameter when temperature is adjusted is opened, and generates the first temperature regulatory demand power of battery according to the first parameter.Obtain battery The second parameter when temperature is adjusted, and according to the second temperature regulatory demand power of the second parameter generation battery.According to first Temperature regulatory demand power and second temperature regulatory demand power generate the temperature regulatory demand power P 1 of the cooling branch of battery.
Further, according to one embodiment of present invention, the first parameter is initial when battery opening temperature is adjusted Temperature and target temperature and the object time t for reaching the target temperature from initial temperature generate first according to the first parameter Temperature regulatory demand power specifically includes: obtaining the first temperature difference Δ T between initial temperature and target temperature1；According to first Temperature difference Δ T1The first temperature regulatory demand power is generated with object time t.
Further, according to one embodiment of present invention, the first temperature regulatory demand is generated by following formula (1) Power:
ΔT1* C*M/t, (1)
Wherein, Δ T1The first temperature difference between initial temperature and target temperature, t are the object time, and C is the ratio of battery Thermal capacitance, M are the quality of battery.
According to one embodiment of present invention, the second parameter is the average current I of battery within a preset time, by following Formula (2) generates second temperature regulatory demand power:
I2* R, (2)
Wherein, I is average current, and R is the internal resistance of battery.
When being cooled down to battery, P1=Δ T1*C*M/t+I2*R；When being heated to battery, P1=Δ T1*C* M/t-I2*R。
According to one embodiment of present invention, the temperature for obtaining battery adjusts actual power P2 and specifically includes: acquisition is used for The inlet temperature and outlet temperature of the flow path of regulating cell temperature, and obtain the flow velocity v that coolant liquid flows into flow path.According to battery Path inlet temperature and outlet temperature generate the second temperature difference Δ T of battery2.According to the second temperature difference Δ T of battery2With flow velocity v The temperature for generating battery adjusts actual power P2.
Further, according to one embodiment of present invention, the practical function of temperature adjusting is generated according to by following formula (3) Rate P2:
ΔT2* c*m, (3)
Wherein, Δ T2Poor for second temperature, c is the specific heat capacity of coolant liquid in flow path, and m is to flow through flow path in the unit time The coolant liquid quality of cross section, wherein m=v* ρ * s, v are the flow velocity of coolant liquid, and ρ is the density of coolant liquid, and s is the cross of flow path Sectional area.
S2 " " ' obtains the regional temperature Tq and air-conditioning set temperature Ts of multiple regions in vehicle respectively.
S3 " " ' adjusts actual power P2, multiple regions temperature Tq and air-conditioning according to temperature regulatory demand power P 1, temperature Set temperature Ts is adjusted the aperture of multiple interior cooling branches, the cooling branch of multiple batteries and multiple refrigeration branches.
Further, according to one embodiment of present invention, practical function is adjusted according to temperature regulatory demand power P 1, temperature Rate P2, multiple regional temperature Tq and air-conditioning set temperature Ts are in object time t to multiple interior cooling branches, multiple The aperture of the cooling branch of battery and multiple refrigeration branches is adjusted, to reach target temperature.
Wherein, battery can be with battery pack or battery modules.
Specifically, by taking refrigeration branch, the cooling branch of battery, interior cooling branch and battery are two as an example, refrigeration branch Respectively the first refrigeration branch and the second refrigeration branch, the cooling branch of battery are respectively the cooling branch of the first battery and the second battery Cooling branch, the cooling branch-path of car are respectively the first interior cooling branch and the second interior cooling branch.
When the temperature of battery is excessively high or too low, need to carry out temperature adjusting to battery.Electricity obtains the temperature tune of battery It saves demand power P1 and temperature adjusts actual power P2, the aperture of the cooling branch of multiple batteries is adjusted according to P1 and P2, to adjust The cooling power of battery, and multiple regions temperature Tq and air-conditioning set temperature Ts is obtained, and each battery is controlled according to Tq and Ts Cooling branch aperture, for example, controlling the cooling area if the Tq higher in some region and differing larger in the Tq in other regions The aperture of the cooling branch of the car in domain increases, while the aperture for controlling the cooling branch of corresponding battery reduces, meanwhile, to guarantee electricity The cooling power in pond is constant, and the aperture for controlling the cooling branch of another car reduces, while controlling the cooling branch of corresponding battery Aperture increase.This method is right according to multiple regions temperature and air-conditioning set temperature in the virtual condition and compartment of battery as a result, The refrigerating capacity in battery and the compartment region Nei Ge is allocated, not only can when battery temperature is excessively high or when too low to temperature into Row is adjusted, and the temperature of battery is made to maintain preset range, can be with the temperature in the region balanced compartment Nei Ge.
Based on Figure 26, illustrate how below in conjunction with specific embodiment according to according to temperature regulatory demand power P 1, temperature It is cooling to multiple interior cooling branches, multiple batteries to adjust actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts The aperture of branch and multiple refrigeration branches is adjusted.
An implementation according to the present invention, on-vehicle battery are one, and interior cooling branch, the cooling branch of battery and refrigeration When branch is multiple, the temperature control method of above-mentioned on-vehicle battery can also include: the maximum refrigeration according to multiple compressors Power P generates total maximum refrigeration work consumption P5 of multiple compressors.Judge whether temperature regulatory demand power P 1 is greater than multiple compressions Total maximum refrigeration work consumption P5 of machine.If temperature regulatory demand power P 1 is greater than total maximum refrigeration work consumption P5 of multiple compressors, Then multiple compressors are adjusted to the refrigerating capacity aperture of the cooling branch of battery to maximum.If temperature regulatory demand power P 1 is less than Or total maximum refrigeration work consumption P5 equal to multiple compressors, then according to temperature regulatory demand power P 1 and total maximum refrigeration work consumption The difference of P5 is adjusted the refrigerating capacity aperture of the cooling branch of the corresponding battery of battery.
Specifically, total maximum refrigeration of multiple compressors can be calculated according to the maximum refrigeration work consumption P of each compressor Total maximum refrigeration work consumption P5 can be obtained in the maximum refrigeration work consumption P addition of each compressor by power P 5.Then, judgement is No P1 > P5, if it is, by the aperture regulation of the second expansion valve in the cooling branch of each battery to maximum, by multiple pressures Contracting machine is adjusted to the coolant rate of the cooling branch of the corresponding battery of battery to maximum, so that battery can be in object time t Complete cooling.And if P1≤P5, according to the opening to the second expansion valve in the cooling branch of battery of the difference between P1 and P5 Degree is adjusted, wherein the absolute value of P1 and P5 difference is bigger, and the aperture of the second expansion valve is smaller, to reach energy saving Purpose.
According to one embodiment of present invention, the temperature control method of battery can be the following steps are included: detection battery Temperature.When the temperature of battery is greater than the first temperature threshold, into refrigerating mode.When the temperature of battery is less than second temperature threshold When value, into heating mode.Wherein, the first temperature threshold and second temperature threshold value can be preset according to the actual situation, example Such as, the first temperature threshold can be 40 DEG C, and second temperature threshold value can be 0 DEG C.
Specifically, after vehicle powers on, the temperature of real-time detection battery, and judged.If the temperature of battery is higher than 40 DEG C, illustrate that the temperature of battery at this time is excessively high, to avoid high temperature from having an impact the performance of battery, needs to carry out at cooling battery Reason, into refrigerating mode, concurrent power transmission pond refrigerating function starts information to air-conditioning system.And if the temperature of battery is lower than 0 DEG C, Illustrate that the temperature of battery at this time is too low, to avoid low temperature from having an impact the performance of battery, need to carry out heating treatment to battery, It into heating mode, controls the cooling branch of battery and closes, and control heater unlatching, to provide heating power for battery.
According to one embodiment of present invention, it when for refrigerating mode, is adjusted according to temperature regulatory demand power P 1, temperature Actual power P2, multiple regions temperature Tq and air-conditioning set temperature Ts are to multiple interior cooling branches, the cooling branch of multiple batteries It is adjusted and specifically includes with the aperture of multiple refrigeration branches: being greater than temperature in the temperature regulatory demand power P 1 of the cooling branch of battery When degree adjusts actual power P2, judge whether battery temperature is greater than third temperature threshold, wherein if battery temperature is greater than third Temperature threshold, then reduce the aperture of multiple interior cooling branches, and improves the aperture of the cooling branch of multiple batteries, wherein multiple The aperture of the cooling branch of battery is controlled respectively by corresponding valve (i.e. the second expansion valve), and third temperature threshold is greater than the first temperature Threshold value is spent, such as third temperature threshold can be 45 DEG C.
Specifically, when for refrigerating mode, if P1 is greater than P2, judge whether the temperature of battery is greater than 45 DEG C.If The temperature of battery is greater than 45 DEG C, illustrates that the temperature of present battery is excessively high, reduces the aperture of the first expansion valve, interior cooling to reduce The coolant rate of branch, while increasing the aperture of the second expansion valve 42, to increase the coolant rate of the cooling branch of battery.By This can be when battery temperature be excessively high in target by adjusting the refrigerating capacity distribution of interior cooling branch and the cooling branch of battery The temperature that battery is completed in time is adjusted.
According to one embodiment of present invention, the temperature control method of battery further include: judging that the temperature of battery is adjusted needs It asks power P 1 whether to be greater than temperature and adjusts actual power P2.If the temperature regulatory demand power P 1 of battery is greater than the temperature of battery When adjusting actual power P2, then the temperature regulatory demand power P 1 and temperature that obtain battery adjust the power between actual power P2 Difference, and increase the power for being used for the compressor of cooling of battery according to difference power, or adjust the loop branches time for increasing battery The coolant rate on road, to increase the cooling power of battery.If the temperature regulatory demand power P 1 of battery is less than or equal to electricity The temperature in pond adjusts actual power P2, then reduces the power of compressor or keep the power of compressor constant, or adjust and reduce The coolant rate in the loop branches circuit of battery, to reduce the cooling power of battery.
Specifically, when working in refrigerating mode, the P1 and P2 of battery are obtained respectively, and are judged.If P1 is greater than P2 illustrates if can not complete the cooling of the battery within the object time according to current refrigeration work consumption or coolant rate, So obtaining the difference power between the P1 of battery and P2, and increase the power of compressor according to difference power, or increase the battery Loop branches circuit coolant rate, to increase the cooling power of the battery, wherein the difference power of P1 and P2 is bigger, pressure The power of contracting machine and the coolant rate increase of the battery are more, so that the temperature of battery is reduced to target in preset time t Temperature.And if the P1 of battery is less than or equal to P2, the power of compressor can be kept constant or the appropriate power for reducing compressor, Or the coolant rate in the loop branches circuit of the battery is reduced, reduce the cooling power of battery.When the temperature of battery is lower than At 35 DEG C, then battery is cooling completes, and sends the information of closing temperature regulatory function to on-board air conditioner by CAN communication, and control Second electronic valve is closed.If after humidity control system enters the refrigerating mode long period, such as after 1 hour, still there is battery Temperature is higher than 35 DEG C, then suitably increases the power of compressor again, so that the battery is completed to cool down as early as possible.
According to one embodiment of present invention, if battery temperature is less than third temperature threshold, further described in judgement Whether vehicle interior temperature is equal to air-conditioning set temperature Ts；If vehicle interior temperature is equal to air-conditioning set temperature Ts, multiple cars are reduced The aperture of cooling branch, and improve the aperture of the cooling branch of multiple batteries.
Specifically, when for refrigerating mode, if the temperature of battery is both less than 45 DEG C, whether controller judges vehicle interior temperature Reach air-conditioning set temperature Ts.If reached, increase the coolant rate of the cooling branch of battery, reduces interior cooling branch Coolant rate completes the cooling of battery as early as possible.And if vehicle interior temperature does not reach air-conditioning set temperature Ts, it is preferential to meet Interior refrigeration demand, controller increase the coolant rate of interior cooling branch, and reduce the coolant liquid of the cooling branch of battery Flow.
It is handled by different level in addition, also having been done to battery temperature, temperature controlled threshold value is respectively 40 DEG C, 45 DEG C and 35 DEG C. When battery temperature is higher than 40 DEG C, the starting of battery refrigerating function, when battery temperature is reduced to 35 DEG C, then battery is cooling is completed.When When battery temperature reaches 45 DEG C, preferentially meet battery cooling requirement.It is adjusted in fact in addition, temperature regulatory demand power P 1 is greater than temperature When the power P 2 of border, if battery temperature is no more than 45 DEG C, still preferential interior refrigeration demand, if interior refrigeration work consumption It is sufficient, and reach balance, then increase the aperture of the cooling branch of battery, to increase the cooling power of battery.And if temperature When regulatory demand power P 1 is less than or equal to temperature adjusting actual power P2, it can preferentially meet interior refrigeration demand.
According to one embodiment of present invention, the aperture for reducing multiple interior cooling branches specifically includes: obtaining multiple areas Temperature difference between the temperature of domain.Judge whether temperature difference is greater than the 4th temperature threshold.If temperature difference is greater than the 4th temperature threshold When, then the aperture of the corresponding interior cooling branch of refrigeration branch where the high air outlet of temperature is increased, and go out temperature is high The aperture of the cooling branch of the corresponding battery of refrigeration branch where air port reduces.Wherein, the 4th temperature threshold can be according to practical feelings Condition is preset, such as can be 3 DEG C.
In one embodiment of the invention, multiple refrigeration branches respectively correspond multiple air outlets, and multiple regions temperature is The temperature of multiple air outlets.
For example, as shown in figure 21,4 air outlets, respectively air outlet 1- air outlet 4 can be set in compartment.It is logical It crosses detection air port temperature Tc and detects corresponding regional temperature Tq.Assuming that air outlet 1 and air outlet 2 are by the first refrigeration branch 11 Refrigeration work consumption is provided, air port 3 and air outlet 4 is set out by the second refrigeration branch 12 and refrigeration work consumption is provided.
Further, according to one embodiment of present invention, the temperature control method of on-vehicle battery further include: temperature is low Air outlet where the aperture of the corresponding interior cooling branch of refrigeration branch reduce, and will refrigeration branch where the low air outlet of temperature The aperture of the cooling branch of the corresponding battery in road improves.
Specifically, it in battery cooling procedure, if car needs to open air-conditioning, needs to the environment temperature in compartment It is monitored and controls, so that interior environment temperature everywhere is kept in balance, while being able to satisfy the cooling requirement of battery again.Such as figure Shown in 21, when detecting that regional temperature Tq is than near zone temperature Tq at air outlet 3 and air outlet 4 at air outlet 1 and air outlet 2 At high 3 DEG C or more, increases the aperture in the first interior cooling branch, reduce the aperture in the cooling branch of the first battery, so that the Cooling power in one interior cooling branch is larger.Also reduce the cold aperture in the second interior cooling branch, increases the second battery The aperture of cooling branch, so that the cooling power in the second interior cooling branch is smaller.Thus, it is possible to keep the first battery cooling and The cooling power of the cooling branch of second battery is constant, while making interior air outlet near zone temperature everywhere balanced again.Work as vehicle Carry detection of air-conditioning near zone temperature Tq near zone temperature Tq and air outlet 3, air outlet 4 at air outlet 1, air outlet 2 For difference when within 3 DEG C, the first expansion valve opening in the interior cooling branch of control first and the second interior cooling branch is identical, Cooling power to guarantee the first interior cooling branch and the second interior cooling branch is identical.
According to one embodiment of present invention, when for heating mode, further includes: judge the temperature regulatory demand function of battery Whether rate P1, which is greater than temperature, adjusts actual power P2.If the temperature regulatory demand power P 1 of battery, which is greater than temperature, adjusts reality Power P 2, then obtain battery temperature regulatory demand power P 1 and temperature adjust actual power P2 between difference power, and according to Difference power increases the power for cooling down the heater of battery, or adjusts the cooling liquid stream for increasing the loop branches circuit of battery Amount, to increase the heating power of battery.If the temperature regulatory demand power P 1 of battery, which is less than or equal to temperature, adjusts practical function Rate P2 then reduces the power of heater or keeps the power of heater constant, or adjusts the loop branches circuit for reducing battery Coolant rate, to reduce the heating power of battery.
Specifically, when for heating mode, the P1 and P2 of battery are obtained respectively, and are judged.If wherein P1 is greater than P2 illustrates if can not complete the heating of battery, institute within the object time according to current heating power or coolant rate With, the difference power between the P1 of battery and P2 is obtained, and the power for heating the heater of battery is increased according to difference power, or Person is improved by adjusting the revolving speed of corresponding pump, to increase the coolant rate in the loop branches circuit of the battery, so that battery Temperature adjusting can be completed in object time t.Wherein, the difference of P1 and P2 is bigger, and the power of heater is increased more.And If the P1 of battery is less than or equal to P2, it can suitably reduce the power of heater, to save electric energy, or by adjusting correspondence The revolving speed of pump reduce the coolant rate for reducing the loop branches circuit of the battery, to reduce heating power, or keep heating The power of device is constant.When the temperature of battery is higher than preset temperature, such as at 10 DEG C, battery heating is completed, by CAN communication to vehicle It carries air-conditioning and sends the information of closing temperature regulatory function, and control heater closing.If humidity control system enters heated mould After the formula long period, such as after 1 hour, the temperature of battery still is below 10 DEG C, then suitably increases the power of heater again, so that The battery is completed to heat up as early as possible.
According to one embodiment of the present of invention, if the temperature control method of on-vehicle battery can also include: the temperature of battery Regulatory demand power P 1 is less than temperature and adjusts actual power P2, then reduces the revolving speed pumped in the flow path of battery；If the temperature of battery It spends regulatory demand power P 1 and is greater than temperature adjusting actual power P2, then improve the revolving speed pumped in the flow path of battery.
Specifically, when humidity control system enters heating mode or refrigerating mode, if the P1 of battery is less than P2, control Making the revolving speed pumped accordingly reduces, to save electric energy.And if the P1 of battery is greater than P2, controller is except the corresponding heater of control Or the power of compressor increases or the increase of the coolant rate in the loop branches circuit of battery is outer, the revolving speed for also controlling pump improves, The coolant liquid quality that cooling flowing path cross section is flowed through in the unit time can be increased, so that the temperature for improving battery adjusts practical function Rate P2, to realize that temperature is adjusted in object time t.
In conclusion the temperature control method of on-vehicle battery according to an embodiment of the present invention, firstly, obtaining battery respectively Temperature regulatory demand power and temperature adjust actual power, then, obtain the regional temperature and sky of multiple regions in vehicle respectively Setting temperature is adjusted, adjusts actual power, multiple regions temperature and air-conditioning set temperature pair further according to temperature regulatory demand power, temperature The aperture of multiple interior cooling branches, the cooling branch of multiple batteries and multiple refrigeration branches is adjusted.As a result, this method according to Multiple regions temperature and air-conditioning set temperature in the virtual condition and compartment of battery, to the refrigerating capacity of battery and the compartment region Nei Ge It is allocated, temperature can be not only adjusted when battery temperature is excessively high or when too low, maintain the temperature of battery Preset range, can be with each regional temperature in balanced compartment.
When the compressor 1 that battery provides refrigerant can be multiple and mutually indepedent, the cooling branch 3 of car and battery cooling Returning branch 4 can be 1.
For example, as shown in figure 28, by taking compressor is two as an example, including the first compressor 11 and the second compressor 12.Controller can adjust the starting quantity of actual power P2 control compressor according to temperature regulatory demand power P 1 and temperature.
Specifically, when cooling down to battery 6, if P1 is greater than P2, a compressor start is controlled, and if P1 is less than P2, controls two compressors and starts.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below " One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (31)

1. a kind of temperature control method of on-vehicle battery, which is characterized in that the on-vehicle battery include multiple parallel connections battery and Battery temperature adjustment module, the described method comprises the following steps:
The temperature regulatory demand power of the battery of the multiple parallel connection is obtained respectively；
The temperature for obtaining the battery of the multiple parallel connection respectively adjusts actual power；
Actual power is adjusted to described according to the temperature regulatory demand power of the battery of the multiple parallel connection and the temperature respectively Battery temperature adjustment module is controlled the temperature of the battery of the multiple parallel connection to be adjusted within the object time, to reach To target temperature, wherein the temperature of each battery is individually controlled by the battery temperature adjustment module.
2. the temperature control method of on-vehicle battery as described in claim 1, which is characterized in that described respectively according to the multiple The temperature regulatory demand power of battery in parallel and the temperature adjust actual power and carry out to the battery temperature adjustment module Control is adjusted with the temperature to the battery further include:
Total moisture content regulatory demand power is generated according to the temperature regulatory demand power of the battery of the multiple parallel connection；
Judge whether the total moisture content regulatory demand power matches with the specified refrigeration work consumption of on-board air conditioner；
If it does, then according to the temperature regulatory demand power of the battery of the multiple parallel connection be the multiple parallel connection battery into Row cooling；
If it does not match, according to the temperature regulatory demand of the specified refrigeration work consumption of the air-conditioning and the battery of the multiple parallel connection Power is that the battery of the multiple parallel connection is cooled down.
3. the temperature control method of on-vehicle battery as described in claim 1, which is characterized in that described to obtain multiple parallel connections respectively The temperature regulatory demand power of battery specifically include:
The first parameter when the opening temperature adjusting of each battery is obtained respectively, and each battery is generated according to first parameter The first temperature regulatory demand power；
Second parameter of each battery when temperature is adjusted is obtained respectively, and each battery is generated according to second parameter Second temperature regulatory demand power；
According to the second temperature regulatory demand function of the first temperature regulatory demand power of each battery and each battery Rate generates the temperature regulatory demand power of each battery respectively.
4. the temperature control method of on-vehicle battery as claimed in claim 3, which is characterized in that first parameter is the electricity Initial temperature and target temperature when pond opening temperature is adjusted and the target for reaching the target temperature from the initial temperature Time, the first temperature regulatory demand power for generating each battery according to first parameter specifically include:
Obtain the first temperature difference between the initial temperature and the target temperature；
The first temperature regulatory demand power is generated according to first temperature difference and the object time.
5. the temperature control method of on-vehicle battery as claimed in claim 3, which is characterized in that described in being generated by following formula First temperature regulatory demand power:
ΔT1* C*M/t,
Wherein, Δ T1The first temperature difference between the initial temperature and the target temperature, t are the object time, and C is The specific heat capacity of the battery, M are the quality of the battery.
6. the temperature control method of on-vehicle battery as claimed in claim 3, which is characterized in that second parameter is described every The average current of a battery within a preset time generates the second temperature regulatory demand function of each battery by following formula Rate:
I2* R,
Wherein, I is the average current, and R is the internal resistance of the battery.
7. the temperature control method of on-vehicle battery as claimed in any one of claims 1 to 6, which is characterized in that further include:
Detect the temperature of the battery of the multiple parallel connection；
When the temperature for having at least one battery in the battery of the multiple parallel connection is greater than the first temperature threshold, into cooling mould Formula；
When the temperature for having at least one battery in the battery of the multiple parallel connection is less than second temperature threshold value, into heated mould Formula.
8. the temperature control method of on-vehicle battery as claimed in claim 7, which is characterized in that described when for refrigerating mode Actual power is adjusted to the battery according to the temperature regulatory demand power of the battery of the multiple parallel connection and the temperature respectively Temperature adjustment module is controlled to be adjusted with the temperature of the battery to the multiple parallel connection, is specifically included:
Judge whether the temperature regulatory demand power of each battery is greater than the corresponding temperature of each battery and adjusts reality Power；
If the temperature regulatory demand power of some battery is greater than the battery, corresponding temperature adjusts actual power, and obtaining should The temperature regulatory demand power of battery and the temperature adjust the difference power between actual power, and according to the difference power Increase the power for cooling down the compressor of the battery, or adjust the coolant rate for increasing the battery, to increase State the cooling power of battery；
If the temperature regulatory demand power of some battery is less than or equal to the battery, corresponding temperature adjusts practical function Rate then reduces the power of the compressor or keeps the power of the compressor constant, or adjusts and reduce the cold of the battery But flow quantity, to reduce the cooling power of the battery.
9. the temperature control method of on-vehicle battery as claimed in claim 7, which is characterized in that described when for heating mode Actual power is adjusted to the battery according to the temperature regulatory demand power of the battery of the multiple parallel connection and the temperature respectively Temperature adjustment module is controlled to be adjusted with the temperature of the battery to the multiple parallel connection, is specifically included:
Judge whether the temperature regulatory demand power of each battery is greater than the corresponding temperature of each battery and adjusts reality Power；
If the temperature regulatory demand power of some battery is greater than the battery, corresponding temperature adjusts actual power, and obtaining should The temperature regulatory demand power of battery and the temperature adjust the difference power between actual power, and according to the difference power Increase the power for cooling down the heater of the battery, or adjust the coolant rate for increasing the battery, to increase State the heating power of battery；
If the temperature regulatory demand power of some battery is less than or equal to the battery, corresponding temperature adjusts practical function Rate then reduces the power of the heater, or keeps the power of the heater constant, or adjusts and reduce the cold of the battery But flow quantity, to reduce the heating power of the battery.
10. the temperature control method of on-vehicle battery as claimed in claim 9, which is characterized in that further include:
If the temperature regulatory demand power of some battery, which is less than the corresponding temperature, adjusts actual power, water is reduced The revolving speed of pump；
If the temperature regulatory demand power of some battery, which is greater than the corresponding temperature, adjusts actual power, institute is improved State the revolving speed of water pump.
11. the temperature control method of on-vehicle battery as described in claim 1, which is characterized in that it is described obtain respectively it is described more The temperature of the battery of a parallel connection adjusts actual power and specifically includes:
It obtains for adjusting the inlet temperature and outlet temperature of the flow path of each battery temperature, and obtains coolant liquid and flow into institute State the flow velocity of flow path；
The second temperature for generating each battery according to the path inlet temperature of each battery and outlet temperature is poor；
Actual power is adjusted according to the temperature that the second temperature difference of each battery and the flow velocity generate each battery.
12. the temperature control method of on-vehicle battery as claimed in claim 11, which is characterized in that generate institute by following formula It states temperature and adjusts actual power:
ΔT2* c*m,
Wherein, the Δ T2Poor for the second temperature, c is the specific heat capacity of coolant liquid in the battery cooling circuit, and m is unit The coolant liquid quality of the cross-sectional area of the flow path is flowed through in time, wherein m=v* ρ * s, v are the flow velocity of the coolant liquid, ρ For the density of the coolant liquid, s is the cross-sectional area of the flow path.
13. the temperature control method of on-vehicle battery as described in claim 1, which is characterized in that for being provided for the battery The compressor of refrigerant be it is multiple, the method also includes:
According to the pressure of the specified refrigeration work consumption of the temperature regulatory demand power of each battery and each compressor judgement starting The quantity of contracting machine；
When for refrigerating mode, the compressor start of respective numbers is controlled.
14. the temperature control method of on-vehicle battery as claimed in claim 13, which is characterized in that described according to each electricity The quantity of the compressor of the specified refrigeration work consumption judgement starting of the temperature regulatory demand power and each compressor in pond specifically includes:
Total moisture content regulatory demand power is generated according to the temperature regulatory demand power of each battery；
Judge whether the total moisture content regulatory demand power is greater than the specified refrigeration work consumption of single compressor；
If it is greater than the specified refrigeration work consumption of the single compressor, then controls the multiple compressor while starting.
15. a kind of humidity control system of on-vehicle battery characterized by comprising
Compressor；
The condenser being connected with the compressor；
The battery cooling circuit being connected between the compressor and the condenser；
The battery temperature adjustment module being connected with the battery of multiple parallel connections and the battery cooling circuit, it is the multiple for obtaining The temperature regulatory demand power and temperature of battery in parallel adjust actual power, and respectively according to the battery of the multiple parallel connection Temperature regulatory demand power and temperature adjust actual power and carry out within the object time to the temperature of the battery of the multiple parallel connection It adjusts, to reach target temperature, wherein the temperature of each battery is individually controlled by the battery temperature adjustment module.
16. the humidity control system of on-vehicle battery as claimed in claim 15, which is characterized in that the battery cooling circuit packet Heat exchanger is included, the heat exchanger is connected with the battery temperature adjustment module.
17. the humidity control system of on-vehicle battery as claimed in claim 15, which is characterized in that the battery temperature adjusts mould Block includes: the flow path for adjusting the battery temperature, and the flow path is separately positioned among the battery；Be connected to the flow path and Water pump, media Containers, heater and controller between the heat exchanger, wherein the controller obtains described more respectively The temperature regulatory demand power and temperature of the battery of a parallel connection adjust actual power, and respectively according to the temperature of each battery Regulatory demand power and the temperature adjust actual power and the temperature of each battery are adjusted.
18. the humidity control system of on-vehicle battery as claimed in claim 17, which is characterized in that the battery temperature adjusts mould Block further include: be separately positioned on the first temperature sensor of the entrance of the flow path, be separately positioned on the outlet of the flow path Second temperature sensor and flow sensor.
19. the humidity control system of on-vehicle battery as claimed in claim 18, which is characterized in that the controller is also used to root Total moisture content regulatory demand power is generated according to the temperature regulatory demand power of the battery of the multiple parallel connection, and judges the total moisture content Whether regulatory demand power matches with the specified refrigeration work consumption of on-board air conditioner, wherein
If it does, then the controller according to the temperature regulatory demand power of the battery of the multiple parallel connection be it is the multiple simultaneously The battery of connection is cooled down；
If it does not match, temperature of the controller according to the specified refrigeration work consumption of the air-conditioning and the battery of the multiple parallel connection Degree regulatory demand power is that the battery of the multiple parallel connection is cooled down.
20. the humidity control system of on-vehicle battery as claimed in claim 17, which is characterized in that the controller, for dividing The first parameter when each battery opening temperature is adjusted is not obtained, and generates the of each battery according to first parameter One temperature regulatory demand power, and second parameter of each battery when temperature is adjusted is obtained respectively, and according to described Second parameter generates the second temperature regulatory demand power of each battery, and according to the first temperature tune of each battery The second temperature regulatory demand power of section demand power and each battery generates the temperature regulatory demand of each battery Power.
21. the humidity control system of on-vehicle battery as claimed in claim 20, which is characterized in that first parameter is described Initial temperature and target temperature when battery opening temperature is adjusted and the mesh for reaching the target temperature from the initial temperature The time is marked, the controller obtains the first temperature difference between the initial temperature and the target temperature, and according to described the One temperature difference and the object time generate the first temperature regulatory demand power.
22. the humidity control system of on-vehicle battery as claimed in claim 21, which is characterized in that the controller passes through following Formula generates the first temperature regulatory demand power:
ΔT1* C*M/t,
Wherein, Δ T1For the first temperature difference between each battery initial temperature and the target temperature, t is the target Time, C are the specific heat capacity of the battery, and M is the quality of the battery.
23. the humidity control system of on-vehicle battery as claimed in claim 20, which is characterized in that second parameter is described The average current of each battery within a preset time, the controller generate the second temperature of each battery by following formula Spend regulatory demand power:
I2* R,
Wherein, I is the average current, and R is the internal resistance of the battery.
24. the humidity control system of the on-vehicle battery as described in any one of claim 15-23, which is characterized in that the control Device processed is also used to detect the temperature of the battery of the multiple parallel connection, and has at least one electricity in the battery of the multiple parallel connection When the temperature in pond is greater than the first temperature threshold, controls the humidity control system and enter refrigerating mode, and it is the multiple simultaneously When thering is the temperature of at least one battery to be less than second temperature threshold value in connection battery, controls the humidity control system and enter heated mould Formula.
25. the humidity control system of on-vehicle battery as claimed in claim 24, which is characterized in that when for refrigerating mode, institute It states controller and is greater than the practical function of the corresponding temperature adjusting of the battery in the temperature regulatory demand power of some battery, then obtaining should The temperature regulatory demand power of battery and the temperature adjust the difference power between actual power, and according to the difference power Increase the power for cooling down the compressor of the battery, or increase the coolant rate of the battery, to increase the electricity The cooling power in pond, and it is less than or equal to the practical function of temperature adjusting in the temperature regulatory demand power of some battery When rate, reduces the power of the compressor or keep the power of the compressor constant, or adjust and reduce the cold of the battery But flow quantity, to reduce the cooling power of the battery.
26. the humidity control system of on-vehicle battery as claimed in claim 24, which is characterized in that when for heating mode, institute Controller is stated when the temperature regulatory demand power of some battery is greater than the temperature and adjusts actual power, obtains the battery The temperature regulatory demand power and the temperature adjust actual power between difference power it is poor, and according to the difference power increase Add the power of the heater for heating the battery, or adjust the coolant rate for increasing the battery, described in increasing The heating power of battery, and it is less than or equal to temperature adjusting reality in the temperature regulatory demand power of some battery When power, reduce the power of the heater, or keep the power of the heater constant, or adjust and reduce the battery Coolant rate, to reduce the heating power of the battery.
27. the humidity control system of on-vehicle battery as claimed in claim 26, which is characterized in that the controller is also used to When the temperature regulatory demand power of some battery is less than the corresponding temperature and adjusts actual power, water pump is reduced Revolving speed mention and when the temperature regulatory demand power of some battery is greater than the corresponding temperature and adjusts actual power The revolving speed of the high water pump.
28. the humidity control system of on-vehicle battery as claimed in claim 18, which is characterized in that controller basis respectively The inlet temperature of the first temperature sensor detection and the outlet temperature of second temperature sensor detection generate each electricity The second temperature in pond is poor, and generates institute according to the flow velocity that the second temperature difference of each battery and the flow sensor detect The temperature for stating each battery adjusts actual power.
29. the humidity control system of on-vehicle battery as claimed in claim 28, which is characterized in that generate institute by following formula It states temperature and adjusts actual power:
ΔT2* c*m,
Wherein, the Δ T2Poor for the second temperature, c is the specific heat capacity of the coolant liquid in the battery cooling circuit, and m is single The coolant liquid quality of the cross-sectional area of the flow path is flowed through in the time of position, wherein m=v* ρ * s, v are the flow velocity of the coolant liquid, ρ is the density of the coolant liquid, and s is the cross-sectional area of the flow path.
30. the humidity control system of on-vehicle battery as claimed in claim 15, which is characterized in that for being provided for the battery The compressor of refrigerant be it is multiple, it is described car cooling circuit and the battery cooling circuit be it is multiple, the controller is also For judging the compression of starting according to the temperature regulatory demand power of each battery and the specified cold power of each compressor The quantity of machine, and when the humidity control system is refrigerating mode, control the compressor start of respective numbers.
31. the humidity control system of on-vehicle battery as claimed in claim 30, which is characterized in that the controller is according to The temperature regulatory demand power of each battery generates total moisture content regulatory demand power, and needs judging that the total moisture content is adjusted When power being asked to be greater than the specified refrigeration work consumption of single compressor, controls the multiple compressor while starting.
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