CN108987850A - Battery temperature control system of electric automobile and control method thereof - Google Patents
Battery temperature control system of electric automobile and control method thereof Download PDFInfo
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- CN108987850A CN108987850A CN201810903689.7A CN201810903689A CN108987850A CN 108987850 A CN108987850 A CN 108987850A CN 201810903689 A CN201810903689 A CN 201810903689A CN 108987850 A CN108987850 A CN 108987850A
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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
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/615—Heating or keeping warm
-
- 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
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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
- H01M10/63—Control systems
-
- 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
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
-
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
-
- 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
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—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
Landscapes
- 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 provides a battery temperature control system and a control method of an electric vehicle, wherein the system comprises: the cooler with first heat transfer passageway and second heat transfer passageway, with the first return circuit of first heat transfer passageway intercommunication, with the second return circuit and the battery controller of second heat transfer passageway intercommunication, the liquid outlet of first heat transfer passageway with air conditioner condensation return circuit, first electronic valve the inlet of first heat transfer passageway communicates in proper order and forms the first return circuit, the liquid outlet of second heat transfer passageway with battery water cooling plant, hot water heater the inlet of second heat transfer passageway communicates in proper order and forms the second return circuit, the battery controller with first electronic valve hot water heater difference communication connection. The invention provides an independent heating loop and a refrigeration loop, two sets of systems are mutually independent and do not interfere with each other, and the invention has the characteristics of simple control, few components, high system reliability and the like.
Description
Technical field
The present invention relates to electric vehicle correlative technology field, especially a kind of batteries of electric automobile temperature control system and its control
Method.
Background technique
As national legislation is to the increased requirement of electric vehicle course continuation mileage, battery energy density increases therewith；Battery energy
After metric density is promoted, calorific value of the battery under different operating conditions increases, especially under hot environment (such as: summer surface temperature 40
DEG C situation) when carrying out battery fast charge, fever is obvious.To promote battery performance, increases battery life and need to fit battery
Work as cooling.Simultaneously, it is contemplated that there are dendritic states for lithium battery when low temperature, to avoid such case, need to battery system into
Row heating is to guarantee performance.
Existing battery temperature control system not can be implemented simultaneously independent heating circuit and low-temperature circuit, and existing battery temperature
The control of control system is completely integrated on entire car controller (VCM), and entire car controller needs to be individually for temperature control system setting control
Unit, the controller development cycle is long, at high cost.
Summary of the invention
Based on this, it is necessary to for existing battery temperature control system, provide a kind of batteries of electric automobile
Temperature control system and its control method.
The present invention provides a kind of batteries of electric automobile temperature control system, comprising: has the first heat exchanger channels and the second heat exchange logical
The cooler in road, the first circuit being connected to first heat exchanger channels, the second servo loop being connected to second heat exchanger channels,
And battery controller, the liquid outlet of first heat exchanger channels and air conditioner condensation circuit, the first electronic valve, first heat exchange
The inlet in channel is sequentially communicated to form first circuit, the liquid outlet and battery water cooling plant of second heat exchanger channels,
Water-warming heater, second heat exchanger channels inlet be sequentially communicated to form the second servo loop, the battery controller with
First electronic valve, the water-warming heater communicate to connect respectively.
It further, further include air-conditioner controller, the battery controller passes through the air-conditioner controller and described first
Electronic valve, the water-warming heater communicate to connect respectively.
It further, further include being arranged between the second heat exchanger channels liquid outlet and the battery water cooling plant
Water pump, the water pump and the air-conditioner controller communicate to connect.
Further, the air conditioner condensation circuit includes the air-conditioning pressure being connected to the liquid outlet of first heat exchanger channels
Contracting machine, the air-conditioning condenser being connected to the compressor of air conditioner, the A/C evaporator being connected to the air-conditioning condenser, the sky
It adjusts evaporator to be connected to the compressor of air conditioner, is additionally provided on the air-conditioning condenser and is communicated to connect with the air-conditioner controller
Cooling fan；
The air-conditioning condenser is connected to the tie point of the A/C evaporator with first electronic valve, and the connection
The second electronic valve with air-conditioner controller communication connection is additionally provided between point and the A/C evaporator.
It further, further include the water temperature sensor being arranged on the second servo loop, the water temperature sensor and institute
State battery controller communication connection.
The present invention provides a kind of control method of foregoing batteries of electric automobile temperature control system, comprising:
Current operating conditions are obtained, according to current operating conditions, determines and opens cryogenic temperature threshold value, closes cryogenic temperature threshold
Value opens heating temperature threshold value and closes heating temperature threshold value；
Battery temperature is detected, if battery temperature, which is more than or equal to, opens cryogenic temperature threshold value, opens first electronics
Valve closes first electronic valve, if battery temperature is less than if battery temperature is less than or equal to close cryogenic temperature threshold value
Equal to heating temperature threshold value is opened, then the water-warming heater is opened, if battery temperature, which is more than or equal to, closes heating temperature threshold
Value, then close the water-warming heater.
Further, the unlatching cryogenic temperature threshold value includes that maximum opens cryogenic temperature threshold value and averagely opens temperature of freezing
Spend threshold value, the closings cryogenic temperature threshold value includes maximum closing that cryogenic temperature threshold value is peaceful to be turned off cryogenic temperature threshold value, institute
It states unlatching heating temperature threshold value and opens heating temperature threshold value and averagely unlatching heating temperature threshold value including minimum, the closing adds
Hot temperature threshold includes minimum closing heating temperature threshold value and averagely closes heating temperature threshold value；
The detection battery temperature opens described first if battery temperature, which is more than or equal to, opens cryogenic temperature threshold value
Electronic valve closes first electronic valve, if battery temperature if battery temperature is less than or equal to close cryogenic temperature threshold value
Less than or equal to heating temperature threshold value is opened, then the water-warming heater is opened, if battery temperature, which is more than or equal to, closes heating temperature
Threshold value is spent, then closes the water-warming heater, specifically includes:
Battery temperature is detected, if battery maximum temperature is more than or equal to maximum unlatching cryogenic temperature threshold value and battery is averagely transported
It is dynamic to be more than or equal to averagely unlatching cryogenic temperature threshold value, then first electronic valve is opened, if battery maximum temperature is less than or equal to
Maximum closes cryogenic temperature threshold value or battery mean temperature and is less than or equal to averagely close cryogenic temperature threshold value, then closes described the
One electronic valve, if battery minimum temperature is less than or equal to minimum unlatching heating temperature threshold value and battery mean temperature is less than or equal to put down
Heating temperature threshold value is opened, then opens the water-warming heater, if battery minimum temperature is more than or equal to minimum close and heats
Temperature threshold or battery mean temperature, which are more than or equal to, averagely closes heating temperature threshold value, then closes the water-warming heater.
Further, the operating status includes driving status, slow charged state and quick-charge state.
Further, the control method controls foregoing batteries of electric automobile temperature control system, the side
Method further include:
According to travel condition of vehicle, battery pack temperature, battery pack internal difference in temperature and fiducial temperature threshold value comparison result, control
Make first electronic valve, the water-warming heater, the water pump, and/or the cooling fan.
It is further, described according to battery pack temperature, the comparison result of battery pack internal difference in temperature and fiducial temperature threshold value,
First electronic valve, the water-warming heater, the water pump, and/or the cooling fan are controlled, is specifically included:
According to battery pack temperature, the comparison result of battery pack internal difference in temperature and fiducial temperature threshold value, first electricity is controlled
The aperture of sub- valve, the heating power of the water-warming heater, the power grade of the water pump, and/or the cooling fan function
Rate grade, in which:
When the water-warming heater is opened, the heating power for the water-warming heater that battery pack temperature is opened when low
The heating power for the water-warming heater opened when high more than or equal to battery pack temperature；
When the water pump is opened, battery pack internal difference in temperature is more than or equal to the power of controlled water pump when fiducial temperature threshold value
Grade is greater than or equal to the power of controlled water pump when the small fiducial temperature threshold value of battery pack internal difference in temperature；
When first electronic valve is opened, the aperture for the first electronic valve that battery pack temperature is opened when high is higher than or waits
The aperture for the first electronic valve opened when battery pack temperature is low.
The present invention provides independent heating circuit and refrigerating circuit, and two systems are independent mutually, does not interfere with each other, and has control
Simply, the features such as constituting parts is few, and system reliability is high.Meanwhile the control of existing battery temperature control system is completely integrated in vehicle control
On device (VCM) processed, entire car controller needs to be individually for temperature control system setting control unit, and the controller development cycle is long, at high cost.
The present invention is directed to the part of temperature control system function realization such as, compressor of air conditioner, electric expansion valve on chi l ler, electronic water pump,
The controls such as water PTC are fully integrated into A/C amplifier realization, and such advantage is to make full use of existing above air-conditioner controller
Control resource, hardware components can share completely, and the difference of control object is realized by software adjustment.
Detailed description of the invention
Fig. 1 is a kind of systematic schematic diagram of batteries of electric automobile temperature control system of the present invention；
Fig. 2 is that air-conditioner controller of the present invention controls explanatory diagram；
Fig. 3 is a kind of work flow diagram of the control method of foregoing batteries of electric automobile temperature control system of the present invention.
Specific embodiment
The present invention will be further described in detail in the following with reference to the drawings and specific embodiments.
It is as shown in Figure 1 a kind of systematic schematic diagram of batteries of electric automobile temperature control system of the present invention, comprising: have first to change
The cooler 1 of the passage of heat and the second heat exchanger channels, the first circuit being connected to first heat exchanger channels exchange heat with described second
The second servo loop and battery controller 3 of channel connection, the liquid outlets of first heat exchanger channels and air conditioner condensation circuit, the
One electronic valve 2, first heat exchanger channels inlet be sequentially communicated to form first circuit, second heat exchanger channels
Liquid outlet and battery water cooling plant 5, water-warming heater 4, second heat exchanger channels inlet be sequentially communicated to form described the
Secondary circuit, the battery controller 3 communicate to connect respectively with first electronic valve 2, the water-warming heater 4.
Specifically, cooler 1 has the first heat exchanger channels and the second heat exchanger channels, the first heat exchanger channels and the second heat exchange
Channel carries out heat exchange inside cooler 1.Injection condensate liquid is used for the cooling air conditioner condensation circuit of air-conditioning and passed through by the present invention
First electronic valve 2 introduce cooler first passage, therefore, can by battery controller 3 control the first electronic valve 2 open or
It closes, the first electronic valve 2 is preferably electric expansion valve.When the first electronic valve 2 is opened, the coolant liquid in air conditioner condensation circuit enters
Then first passage carries out heat exchange with the liquid for entering second channel by second servo loop, to reduce liquid in second servo loop
Temperature, and cooled down by the liquid of second servo loop to battery water cooling plant 5, battery water cooling plant 5 is preferably cell water
Cold plate will need to carry out to cool down in temperature control battery merging battery water cooling plant 5 by battery water cooling plant 5.Together
When, water-warming heater 4 is set in the second loop, it is preferred to use hot-water heating PTC can control hot-water heating by battery controller 3 and add
Hot device 4 opens or closes, and when water-warming heater 4 is opened, heats to second servo loop, to improve battery water cooling plant
5 temperature, so that being heated to battery.
The present invention provides independent heating circuit and refrigerating circuit, and two systems are independent mutually, does not interfere with each other, and has control
Simply, the features such as constituting parts is few, and system reliability is high.
It in one of the embodiments, further include air-conditioner controller 7, the battery controller 3 passes through the airconditioning control
Device 7 communicates to connect respectively with first electronic valve 2, the water-warming heater 4.
The present embodiment is directed to the part of temperature control system function realization such as, and the controls such as the first electronic valve 2, water-warming heater 4 are complete
Portion is integrated in air-conditioner controller 7, preferably realizes on A/C amplifier, and such advantage is to make full use of on air-conditioner controller
The existing control resource in face, hardware components can share completely, and the difference of control object can be realized by software adjustment.
It in one of the embodiments, further include being arranged in the second heat exchanger channels liquid outlet and the cell water cold charge
Water pump 6 between setting, the water pump 6 are communicated to connect with the air-conditioner controller 7.
The present embodiment improves the cycle efficieny of coolant liquid by water pump 6.
The air conditioner condensation circuit includes being connected to the liquid outlet of first heat exchanger channels in one of the embodiments,
Compressor of air conditioner 8, the air-conditioning condenser 9 being connected to the compressor of air conditioner 8, the air-conditioning that is connected to the air-conditioning condenser 9
Evaporator 10, the A/C evaporator 10 are connected to the compressor of air conditioner 8, the air-conditioning condenser 9 be additionally provided with it is described
The cooling fan 11 that air-conditioner controller 7 communicates to connect；
The air-conditioning condenser 9 is connected to the tie point of the A/C evaporator 10 with first electronic valve 2, and described
The second electronic valve 12 with the air-conditioner controller 7 communication connection is additionally provided between tie point and the A/C evaporator 10.
Specifically, compressor of air conditioner 8, air-conditioning condenser 9, A/C evaporator 10 form air conditioner condensation circuit, from air-conditioning
The tie point of condenser 9 and the A/C evaporator 10 draws branch and enters cooler 1, to the condensed water of air-conditioning be introduced cold
But device 1 carries out heat exchange.Meanwhile increasing the second electronic valve 12, preferably electronics check valve, to control whether to carry out air conditioner refrigerating
Circulation.
It in one of the embodiments, further include the water temperature sensor 13 being arranged on the second servo loop, the water temperature
Sensor 13 and the battery controller 3 communicate to connect.
Water temperature sensor 13 is arranged in second servo loop in the present embodiment, to be monitored to water temperature.
Fig. 1 is the systematic schematic diagram of preferred embodiment, comprising: has the first heat exchanger channels and the second heat exchanger channels
Cooler 1, be connected to first heat exchanger channels the first circuit, be connected to second heat exchanger channels second servo loop,
Battery controller 3, air-conditioner controller 7, the liquid outlets of first heat exchanger channels and air conditioner condensation circuit, using electric expansion valve
The first electronic valve 2, first heat exchanger channels inlet be sequentially communicated to form first circuit, second heat exchange is logical
The liquid outlet in road and the inlet of water pump 6, battery water cooling plant 5, water-warming heater 4, second heat exchanger channels are sequentially communicated
The second servo loop is formed, the battery controller 3 is heated by air-conditioner controller 7 and first electronic valve 2, the hot-water heating
Device 4, the water pump 6 communicate to connect respectively；
The air conditioner condensation circuit includes the compressor of air conditioner 8 being connected to the liquid outlet of first heat exchanger channels and institute
The air-conditioning condenser 9 for stating the connection of compressor of air conditioner 8, the A/C evaporator 10 being connected to the air-conditioning condenser 9, the air-conditioning steam
Hair device 10 is connected to the compressor of air conditioner 8, and 10 are additionally provided with and 7 communication link of air-conditioner controller on the air-conditioning condenser
The cooling fan 11 connect；
The air-conditioning condenser 9 is connected to the tie point of the A/C evaporator 10 with first electronic valve 2, and described
The second electronic valve 12 with the air-conditioner controller 7 communication connection is additionally provided between tie point and the A/C evaporator 10,
Second electronic valve 12 is electronics check valve；
Water temperature sensor 13 is also set up on the second servo loop, the water temperature sensor 13 and the battery controller 3 are logical
Letter connection.
First circuit of the invention and second servo loop are independent mutually, and being arranged so is advantageous in that two systems are only mutually
It is vertical, it does not interfere with each other, the features such as control is simple, and constituting parts is few, and system reliability is high.
Refrigerating function is realized by cooler (chi l ler) in battery temperature control system, its working principle is that utilizing refrigerant
It is after being expanded by electric expansion valve that chi l ler inner fin is cooling, the high temperature coolant of inside battery outflow by with chi l
Ler inner fin carries out becoming cryogenic liquid and flow into battery pack after heat exchange to be cooled down；Battery heating uses water heater (W/
PTC), circuit cycle power resources are in concatenated electronic water pump.It is simultaneously monitoring system temperature change, temperature is added in systems
Sensor carries out monitoring temperature.
The control of this set battery temperature control system is different from the control method of previous temperature control system, existing battery temperature control system
Control is completely integrated on entire car controller (VCM), and entire car controller needs to be individually for temperature control system setting control unit, control
The device development cycle is long, at high cost.The present invention is directed to the part of temperature control system function realization such as, compressor of air conditioner, on chi l ler
Electric expansion valve, electronic water pump, the controls such as water PTC are fully integrated into A/C amplifier realization, and such advantage is abundant benefit
With control resource existing above air-conditioner controller, hardware components can be shared completely, and the difference of control object passes through software tune
It is whole to realize.As shown in Fig. 2, airconditioning control is directed to the control of traditional vehicle air-conditioning part, the inside includes compressor of air conditioner, air-heating
PTC, damper motor, various temperature sensors etc., in the control correlated parts of newly-increased battery temperature control system, electronic water pump, water
PTC, water temperature sensor etc. can be completed to control by the control hardware resource of existing A/C amplifier；A/C amplifier simultaneously
It is constantly communicated by CAN bus with VCM, the instruction opened or closed that battery manager freezes and heats for battery
A/C amplifier is sent to by CAN bus.
It is illustrated in figure 3 a kind of workflow of the control method of foregoing batteries of electric automobile temperature control system of the present invention
Cheng Tu, comprising:
Step S301 obtains current operating conditions, according to current operating conditions, determines and opens cryogenic temperature threshold value, closes
Cryogenic temperature threshold value opens heating temperature threshold value and closes heating temperature threshold value；
Step S302 detects battery temperature, if battery temperature, which is more than or equal to, opens cryogenic temperature threshold value, described in unlatching
First electronic valve closes first electronic valve, if battery if battery temperature is less than or equal to close cryogenic temperature threshold value
Temperature is less than or equal to open heating temperature threshold value, then opens the water-warming heater, adds if battery temperature is more than or equal to close
Hot temperature threshold then closes the water-warming heater.
The unlatching cryogenic temperature threshold value includes the maximum cryogenic temperature threshold value and average of opening in one of the embodiments,
Cryogenic temperature threshold value is opened, the closing cryogenic temperature threshold value, which includes that maximum closing cryogenic temperature threshold value is peaceful, is turned off refrigeration temperature
Threshold value is spent, the unlatching heating temperature threshold value includes minimum unlatching heating temperature threshold value and averagely opens heating temperature threshold value,
The closing heating temperature threshold value includes minimum closing heating temperature threshold value and averagely closes heating temperature threshold value；
The detection battery temperature opens described first if battery temperature, which is more than or equal to, opens cryogenic temperature threshold value
Electronic valve closes first electronic valve, if battery temperature if battery temperature is less than or equal to close cryogenic temperature threshold value
Less than or equal to heating temperature threshold value is opened, then the water-warming heater is opened, if battery temperature, which is more than or equal to, closes heating temperature
Threshold value is spent, then closes the water-warming heater, specifically includes:
Battery temperature is detected, if battery maximum temperature is more than or equal to maximum unlatching cryogenic temperature threshold value and battery is averagely transported
It is dynamic to be more than or equal to averagely unlatching cryogenic temperature threshold value, then first electronic valve is opened, if battery maximum temperature is less than or equal to
Maximum closes cryogenic temperature threshold value or battery mean temperature and is less than or equal to averagely close cryogenic temperature threshold value, then closes described the
One electronic valve, if battery minimum temperature is less than or equal to minimum unlatching heating temperature threshold value and battery mean temperature is less than or equal to put down
Heating temperature threshold value is opened, then opens the water-warming heater, if battery minimum temperature is more than or equal to minimum close and heats
Temperature threshold or battery mean temperature, which are more than or equal to, averagely closes heating temperature threshold value, then closes the water-warming heater.
The operating status includes driving status, slow charged state and quick charge in one of the embodiments,
State.
According to battery performance requirements, the ideal operating temperature section of battery is 5-35 DEG C, when battery temperature works long hours
The shelf life that will affect battery at 35 DEG C or more can generate damage to battery, it is necessary to limit when battery temperature is higher than 50 DEG C
Battery discharge.So the opening temperature threshold values of battery refrigeration is 35 DEG C, the opening temperature threshold values of battery heating is less than 5 DEG C.It examines
Consider temperature conduction characteristics, needs to set temperature limit sluggish silicon carbide.Design parameter setting is as shown in table 1.
Table 1
The control method controls foregoing batteries of electric automobile temperature control system in one of the embodiments,
System, the method also includes:
According to travel condition of vehicle, battery pack temperature, battery pack internal difference in temperature and fiducial temperature threshold value comparison result, control
Make first electronic valve, the water-warming heater, the water pump, and/or the cooling fan.
It is described according to battery pack temperature, battery pack internal difference in temperature and fiducial temperature threshold value in one of the embodiments,
Comparison result controls first electronic valve, the water-warming heater, the water pump, and/or the cooling fan, specific to wrap
It includes:
According to battery pack temperature, the comparison result of battery pack internal difference in temperature and fiducial temperature threshold value, first electricity is controlled
The aperture of sub- valve, the heating power of the water-warming heater, the power grade of the water pump, and/or the cooling fan function
Rate grade, in which:
When the water-warming heater is opened, the heating power for the water-warming heater that battery pack temperature is opened when low
The heating power for the water-warming heater opened when high more than or equal to battery pack temperature；
When the water pump is opened, battery pack internal difference in temperature is more than or equal to the power of controlled water pump when fiducial temperature threshold value
Grade is greater than or equal to the power of controlled water pump when the small fiducial temperature threshold value of battery pack internal difference in temperature；
When first electronic valve is opened, the aperture for the first electronic valve that battery pack temperature is opened when high is higher than or waits
The aperture for the first electronic valve opened when battery pack temperature is low.
The control parameter of another optimization of the present invention is the control of battery pack internal difference in temperature, according to battery performance requirements battery
Internal difference in temperature need control at 5~8 DEG C, for temperature control control threshold values we be selected as 5 DEG C；The shadow of battery pack temperature is considered simultaneously
It rings, control part associated for temperature control system needs to do control adjustment according to different working condition requirements, and design parameter is arranged such as
Shown in table 2.
Table 2
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of batteries of electric automobile temperature control system characterized by comprising have the first heat exchanger channels and the second heat exchanger channels
Cooler, be connected to first heat exchanger channels the first circuit, be connected to second heat exchanger channels second servo loop, with
And battery controller, the liquid outlet of first heat exchanger channels and air conditioner condensation circuit, the first electronic valve, first heat exchange are led to
The inlet in road is sequentially communicated to form first circuit, the liquid outlet and battery water cooling plant, water of second heat exchanger channels
Warm up heater, the inlet of second heat exchanger channels is sequentially communicated to form the second servo loop, the battery controller and institute
State the first electronic valve, the water-warming heater communicates to connect respectively.
2. batteries of electric automobile temperature control system according to claim 1, which is characterized in that it further include air-conditioner controller, institute
Battery controller is stated to communicate to connect respectively by the air-conditioner controller with first electronic valve, the water-warming heater.
3. batteries of electric automobile temperature control system according to claim 2, which is characterized in that further include being arranged described second
Water pump between heat exchanger channels liquid outlet and the battery water cooling plant, the water pump and the air-conditioner controller communicate to connect.
4. batteries of electric automobile temperature control system according to claim 3, which is characterized in that the air conditioner condensation circuit includes
The compressor of air conditioner that is connected to the liquid outlet of first heat exchanger channels, the air-conditioning condenser being connected to the compressor of air conditioner,
The A/C evaporator being connected to the air-conditioning condenser, the A/C evaporator are connected to the compressor of air conditioner, the air-conditioning
The cooling fan with air-conditioner controller communication connection is additionally provided on condenser；
The air-conditioning condenser is connected to the tie point of the A/C evaporator with first electronic valve, and the tie point with
The second electronic valve with air-conditioner controller communication connection is additionally provided between the A/C evaporator.
5. described in any item batteries of electric automobile temperature control systems according to claim 1~5, which is characterized in that further include setting
Water temperature sensor on the second servo loop, the water temperature sensor and the battery controller communicate to connect.
6. a kind of control method of batteries of electric automobile temperature control system as claimed in any one of claims 1 to 5, feature exist
In, comprising:
Obtain current operating conditions, according to current operating conditions, determine open cryogenic temperature threshold value, close cryogenic temperature threshold value,
It opens heating temperature threshold value and closes heating temperature threshold value；
Battery temperature is detected, if battery temperature, which is more than or equal to, opens cryogenic temperature threshold value, opens first electronic valve, such as
Fruit battery temperature is less than or equal to close cryogenic temperature threshold value, then first electronic valve is closed, if battery temperature is less than or equal to
Heating temperature threshold value is opened, then opens the water-warming heater, if battery temperature, which is more than or equal to, closes heating temperature threshold value,
Close the water-warming heater.
7. the control method of batteries of electric automobile temperature control system according to claim 6, which is characterized in that the unlatching system
Cold temperature threshold includes maximum unlatching cryogenic temperature threshold value and averagely opens cryogenic temperature threshold value, the closing cryogenic temperature threshold value
Including maximum closing, cryogenic temperature threshold value is peaceful is turned off cryogenic temperature threshold value, and the unlatching heating temperature threshold value is opened including minimum
It opens heating temperature threshold value and averagely opens heating temperature threshold value, the closing heating temperature threshold value includes that minimum close heats temperature
It spends threshold value and averagely closes heating temperature threshold value；
The detection battery temperature opens first electronics if battery temperature, which is more than or equal to, opens cryogenic temperature threshold value
Valve closes first electronic valve, if battery temperature is less than if battery temperature is less than or equal to close cryogenic temperature threshold value
Equal to heating temperature threshold value is opened, then the water-warming heater is opened, if battery temperature, which is more than or equal to, closes heating temperature threshold
Value, then close the water-warming heater, specifically include:
Battery temperature is detected, if battery maximum temperature is more than or equal to maximum unlatching cryogenic temperature threshold value and battery mean motion is big
Cryogenic temperature threshold value is averagely opened in being equal to, then opens first electronic valve, if battery maximum temperature is less than or equal to maximum
It closes cryogenic temperature threshold value or battery mean temperature is less than or equal to averagely close cryogenic temperature threshold value, then close first electricity
Sub- valve, if battery minimum temperature is less than or equal to minimum unlatching heating temperature threshold value and battery mean temperature is less than or equal to averagely open
Heating temperature threshold value is opened, then opens the water-warming heater, if battery minimum temperature is more than or equal to minimum closing heating temperature
Threshold value or battery mean temperature, which are more than or equal to, averagely closes heating temperature threshold value, then closes the water-warming heater.
8. the control method of batteries of electric automobile temperature control system according to claim 6, which is characterized in that the operation shape
State includes driving status, slow charged state and quick-charge state.
9. the control method of batteries of electric automobile temperature control system according to claim 6, which is characterized in that the controlling party
Method controls batteries of electric automobile temperature control system as claimed in claim 4, the method also includes:
According to battery pack temperature, the comparison result of battery pack internal difference in temperature and fiducial temperature threshold value, control first electronic valve,
The water-warming heater, the water pump, and/or the cooling fan.
10. the control method of batteries of electric automobile temperature control system according to claim 9, which is characterized in that the basis
The comparison result of battery pack temperature, battery pack internal difference in temperature and fiducial temperature threshold value controls first electronic valve, the hot-water heating
Heater, the water pump, and/or the cooling fan, specifically include:
According to battery pack temperature, the comparison result of battery pack internal difference in temperature and fiducial temperature threshold value, first electronic valve is controlled
Aperture, the heating power of the water-warming heater, the power grade of the water pump, and/or the power of the cooling fan etc.
Grade, in which:
When the water-warming heater is opened, the heating power for the water-warming heater that battery pack temperature is opened when low is greater than
Or the heating power for the water-warming heater opened when high equal to battery pack temperature；
When the water pump is opened, battery pack internal difference in temperature is more than or equal to the power grade of controlled water pump when fiducial temperature threshold value
The power of controlled water pump when fiducial temperature threshold value small greater than or equal to battery pack internal difference in temperature；
When first electronic valve is opened, the aperture for the first electronic valve that battery pack temperature is opened when high is greater than or equal to electricity
The aperture for the first electronic valve that pond packet temperature is opened when low.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810903689.7A CN108987850A (en) | 2018-08-09 | 2018-08-09 | Battery temperature control system of electric automobile and control method thereof |
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| CN201810903689.7A CN108987850A (en) | 2018-08-09 | 2018-08-09 | Battery temperature control system of electric automobile and control method thereof |
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| CN111355002A (en) * | 2018-12-24 | 2020-06-30 | 北京宝沃汽车有限公司 | Heating control method and system of power battery pack and power automobile |
| CN111572313A (en) * | 2020-05-20 | 2020-08-25 | 东风柳州汽车有限公司 | New energy automobile thermal management system using whole automobile waste heat |
| CN111762065A (en) * | 2020-06-23 | 2020-10-13 | 上海擎感智能科技有限公司 | Battery protection method, system, computer readable storage medium and vehicle terminal |
| CN112467237A (en) * | 2020-11-26 | 2021-03-09 | 许继集团有限公司 | Energy storage system heat management device, control method thereof and energy storage system |
| CN113471567A (en) * | 2021-06-15 | 2021-10-01 | 东风柳州汽车有限公司 | Battery pack temperature difference control method, device, equipment and storage medium |
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| US11498451B2 (en) | 2019-08-05 | 2022-11-15 | Contemporary Amperex Technology Co., Limited | Thermal management method for battery pack |
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| CN114655048A (en) * | 2022-03-31 | 2022-06-24 | 东风汽车集团股份有限公司 | Heat management system of charging and battery replacing station based on ground source heat pump |
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