CN110048189A - A kind of liquid cooling battery thermal management system and its control method - Google Patents
A kind of liquid cooling battery thermal management system and its control method Download PDFInfo
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- CN110048189A CN110048189A CN201910334845.7A CN201910334845A CN110048189A CN 110048189 A CN110048189 A CN 110048189A CN 201910334845 A CN201910334845 A CN 201910334845A CN 110048189 A CN110048189 A CN 110048189A
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- heat exchanger
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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
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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
- H01M10/615—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
- H01M10/635—Control systems based on ambient temperature
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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
- H01M10/65—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
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- 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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Automation & Control Theory (AREA)
Abstract
Present disclose provides a kind of liquid cooling battery thermal management system and its control methods, including controller, refrigerating circuit and battery temperature control loop, refrigerating circuit includes compressor, condenser and heat exchanger, one end outlet B of heat exchanger passes through piping connection compressor, one end import A that compressor and condenser pass through piping connection to heat exchanger by piping connection, the outlet of condenser;Battery temperature control loop includes several liquid cooling battery cases, sensor and heater, one end outlet D of heat exchanger passes through piping connection to the heater, the outlet of heater is divided into several branches by pipeline, each branch is controlled by individual flow control valve, and it is connected to one end of corresponding liquid cooling battery case, one end import C that the other end of liquid cooling battery case passes through piping connection to heat exchanger;Temperature sensor is provided at the outlet D and import C of heat exchanger;Controller receives the signal of temperature sensor acquisition, and is electrically connected with compressor, condenser, flow control valve and heater.
Description
Technical field
This disclosure relates to a kind of liquid cooling battery thermal management system and its control method.
Background technique
Only there is provided background technical informations relevant to the disclosure for the statement of this part, it is not necessary to so constitute first skill
Art.
With the high speed development of domestic and international electric car industry in recent years, electric car promotes power battery energy density
Demand is higher and higher.The thermal safety for how ensureing battery under high-energy density further increases the suitable of the environment of power battery
It is the emphasis of battery for electric automobile field of heat management research with property.
Understood according to inventor, currently, battery thermal management mostly uses air-cooled or the natural type of cooling.As the energy content of battery is close
The raising of degree, in electric car use process, above-mentioned heat management mode, which can not be fully solved complicated temperature environment, influences battery
The problem of performance.And these heat management mode low efficiencys, effect is poor, is unfavorable for high energy density cells in the popularization of electric car
Using.Battery charges, and temperature rise is fast, and high temperature leads to charging drop stream, and then the charging time is elongated, and long-time applied at elevated temperature can shadow
Ring the cycle life of battery.If the serious excess temperature of battery, results even in battery thermal runaway.
Summary of the invention
The disclosure to solve the above-mentioned problems, proposes a kind of liquid cooling battery thermal management system and its control method, this public affairs
Opening can control effectively to battery temperature, improve the environmental suitability of battery, ensure that the longevity of battery to a certain extent
Life.
According to some embodiments, the disclosure is adopted the following technical scheme that
A kind of liquid cooling battery thermal management system, including controller, refrigerating circuit and battery temperature control loop, in which:
The refrigerating circuit includes compressor, condenser and heat exchanger, and one end outlet B of the heat exchanger passes through pipe
Road connect compressor, compressor and condenser pass through piping connection to heat exchanger by piping connection, the outlet of condenser
One end import A;
The battery temperature control loop includes several liquid cooling battery cases, sensor and heater, the heat exchanger
One end exports D by piping connection to the heater, and the outlet of heater is divided into several branches by pipeline, each branch by
Individual flow control valve control, and it is connected to one end of corresponding liquid cooling battery case, the other end of the liquid cooling battery case is logical
Cross one end import C of piping connection to the heat exchanger;
Temperature sensor is provided at the outlet D and import C of the heat exchanger;
The controller receives the signal of temperature sensor acquisition, and with compressor, condenser, flow control valve and heating
Device electrical connection, the signal acquired according to battery temperature in liquid cooling battery case and temperature sensor is to compressor, condenser, flow control
Valve and heater processed are controlled.
In above scheme, controller can judge battery refrigeration (or heating) demand, control pressure according to the temperature received
The working condition of contracting machine, condenser, flow control valve and heater is able to maintain battery temperature in a preferred range;Together
When, the coolant rate of the cooling branch of different batteries can be adjusted, by each battery box temperature by controlling flow control valve opening
Difference control is within setting range, it is ensured that the uniformity of battery temperature field distribution.
It is limited as further, each liquid cooling battery case is configured with a battery heating device.
It is limited as further, each branch is connected with several concatenated liquid cooling battery cases.
It is limited as further, the battery temperature control loop further includes water tank and water pump, and the water tank is connected to
The company of one end outlet D and heater of the heat exchanger is arranged in one end front end import C of the heat exchanger, the water pump
Adapter tube road.
It is limited as further, the water filling port of the water tank has gauze element, and is provided with liquid cooling on the water tank
Instruction device, the liquid cooling instruction device and controller.Coolant liquid is preserved in water tank, coolant liquid can be water and be also possible to it
He has coolant liquid.
It is limited as further, the water pump is electrically connected with the controller.Addition water pump can be realized entire battery temperature
Spend the Rapid Circulation of coolant liquid in control loop.
When the received liquid level information value of controller is lower than setting value, the low alarm of liquid level is carried out.
Certainly, liquid cooling instruction device can select existing liquid level sensor, and including but not limited to floating ball type liquid level senses
Device, static pressure type liquid level sensor, this select and set select existing apparatus.
It is limited as further, the surface of the heat exchanger is provided with patch heat-insulation and heat-preservation set.And patch heat-insulation and heat-preservation set
Material including but not limited to materials such as aeroge, rubber-plastic sponges.
It is limited as further, one end front end import A of the heat exchanger is provided with electric expansion valve, and electronics is swollen
Swollen valve is electrically connected with the controller.
It is limited as further, is provided with fan on the condenser.
As another embodiment, the heat exchanger is parallel with an evaporator, and the evaporator is connected with evaporation wind
Machine.
As another embodiment, the heater is ptc heater, is also possible to other assisted heating devices, can
To be heated using waste heat.
A kind of electric car, using above-mentioned liquid cooling battery thermal management system.
Refrigeration control method based on above system, controller receive the battery maximum temperature that each liquid cooling battery case is sent
And minimum temperature, when satisfaction first imposes a condition, the one or more flow control valves of controller control are fully open, open simultaneously
It opens water pump and is recycled by coolant liquid and radiated to each liquid cooling battery case;If battery temperature still rises, when satisfaction second imposes a condition
When, compressor is opened in controller control, while controlling the unlatching of electric expansion valve, is forced to coolant liquid refrigeration;Pass through temperature simultaneously
The temperature of sensor detection coolant liquid is spent, controller adjusts coolant liquid water outlet by the opening size of adjusting electric expansion valve
Temperature, by the control of battery maximum temperature within given threshold, the control of cooling liquid temperature difference at two temperature sensors is being set
Determine within range, until battery maximum temperature and minimum temperature drop to third and impose a condition, controller switches off the pump and owns
Flow control valve.
Method for heating and controlling based on above system, the battery maximum temperature and minimum that controller real-time reception battery is sent
Temperature, when battery is in discharge mode, when meeting the 4th setting condition, battery heating device is opened in controller control, when full
When foot the 5th imposes a condition, battery heating device is closed in controller control;
When battery is in external charge mode, when meeting the 6th setting condition, battery heating dress is opened in controller control
It sets;When meeting the 7th setting condition, battery heating device is closed in controller control.
Wherein, the first setting condition imposes a condition to the 7th is specifically set according to battery maximum temperature and minimum temperature
Threshold range, can be specifically arranged according to situations such as model of specific battery, type, capacity, number, connected load etc..
Compared with prior art, the disclosure has the beneficial effect that
Heat management is optimized to battery temperature, the efficiency of battery thermal management system is improved, energy consumption is effectively reduced, by battery
Temperature control controls within setting range in preferred temperature range, the temperature difference, it is ensured that the uniformity of battery temperature field distribution.One
Determine the environmental suitability for improving battery in degree, marketization application of the battery on electric car can be promoted.
Detailed description of the invention
The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown
Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the disclosure.
Fig. 1 is the direct-fired liquid cooling battery thermal management architecture diagram of battery case of embodiment one;
Fig. 2 be embodiment two be independent PTC heating liquid cooling battery thermal management architecture diagram;
Fig. 3 is to heat architecture diagram using the auxiliary of vehicle waste heat for embodiment three;
Fig. 4 is battery refrigerating circuit and the whole-vehicle air-conditioner integrated support composition of example IV;
Fig. 5 is refrigeration control logic chart;
Fig. 6 is computer heating control logic chart.
Specific embodiment:
The disclosure is described further with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the disclosure.Unless another
It indicates, all technical and scientific terms used herein has usual with disclosure person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Specific embodiment describes " 1 " used, " 2 ", " A ", " B ", " C ", D ", " preceding ", " rear " "upper", "lower", " left side ",
The serial numbers such as the right side ", "front", "rear", letter, the word for indicating direction or positional relationship, merely to of the invention simplifying describes, and
It is not intended to limit the present invention.
As shown in Figure 1, embodiment one, a kind of liquid cooling battery thermal management system comprising controller, compressor, condenser,
Fan, electric expansion valve, heat exchanger, sensor, water pump, water tank, flow control valve, refrigerant line, coolant line with
And battery case and battery heating device with liquid cooling function.The compressor, condenser, electric expansion valve, heat exchanger A connect
Mouth and B interface connect into refrigerating circuit by refrigerant line;The heat exchanger C interface and D interface, sensor 1, water
Pump, flow control valve, liquid cooling battery case, sensor 2 connect into battery temperature control loop by coolant line.The flow
Control valve is arranged on each battery liquid cooling branch, and controller can be by the opening value of control valve, and the flow for adjusting coolant liquid is big
It is small.Each battery liquid cooling branch can connect 1~3 liquid cooling battery case;Liquid cooling battery case is provided with heating device.The fan peace
On condenser.
Heat exchanger, surface mount heat-insulating heat-preserving material, thermal insulation material is including but not limited to aeroge, rubber-plastic sponge etc.
Material.
Sensor 1 acquires the temperature of coolant liquid at heat exchanger nozzle C, is transmitted to controller processing;Sensor 2, is adopted
The temperature for collecting coolant liquid at heat exchanger tube mouth D is transmitted to controller processing.
Water tank, water filling port have gauze element;It has liquid cooling instruction device, liquid level information can be passed to controller;
When the received liquid level information value of controller is lower than setting value, the low alarm of liquid level is carried out.The flow control valve has flow
Real time monitoring function and uninterrupted regulatory function.
Battery heating device is integrated into battery case.When battery needs to heat, controller controls heating function and opens, directly
It connects and is heated to battery modules.
As shown in Fig. 2, the cooling heat management structure of the battery of embodiment two and the same Fig. 1 of technical solution, this will not be detailed here.It adopts
It is the indirect heating manner of difference with Fig. 1 with heating method.Battery heating device described in Fig. 2 is independent ptc heater, setting
On liquid cooling pipeline trunk roads, and it is located at the front of all battery cases of coolant liquid flow direction.Coolant liquid is added by ptc heater
Heat recycles coolant liquid to 20 DEG C, by water pump, is heated by the coolant liquid after heating to battery.
As shown in figure 3, the battery thermal management structure of embodiment three and the same Fig. 1 of technical solution, this will not be detailed here.Difference with
The case study on implementation of Fig. 1 is to be provided with assisted heating device and vehicle waste-heat circuit.Vehicle waste-heat circuit is arranged one
Water pump 2 and solenoid valve are connect by pipeline with assisted heating device.The assisted heating device is a kind of heat exchanger, is utilized
The preheating heated cooling fluid of vehicle heat source is heated to battery.Plug-in hybrid-power automobile or stroke lengthening hybrid power automobile, it is whole
Vehicle waste heat heat source is one such or various engines cooling water, tail gas heating heat source or driving motor cooling water;Pure electricity
Electrical automobile, vehicle waste heat heat source can be with driving motor cooling waters;Fuel cell car, vehicle waste heat heat source be it is one such or
Cooling water, the cooling water of fuel cell of a variety of driving motors.
As shown in figure 4, the framework embodiment that example IV provides battery refrigerating circuit and whole-vehicle air-conditioner integrates, the present embodiment
Including compressor, condenser, condenser fan, evaporator, evaporating fan, electric expansion valve 1, electric expansion valve 2, heat exchanger,
Sensor 1 and sensor 2.Condenser fan is mounted on condenser, and condenser fan is a kind of aerofoil fan;Evaporating fan is mounted on
On evaporator, evaporating fan is a kind of centrifugal fan;Compressor, condenser, condenser fan, evaporator, evaporating fan, electronics
The refrigerating circuit of the composition passenger compartment of expansion valve 1;Compressor, condenser, condenser fan, electric expansion valve 2, heat exchanger, sensing
Device 1 and sensor 2 form the refrigerating circuit of battery.This embodiment can effectively save vehicle space, convenient for arrangement.
In above-described embodiment, controller receives the temperature of the battery case, judges battery refrigeration (or heating) demand, control
The components some or certain such as water pump, compressor, electric expansion valve, flow control valve (or heating device) are several or work at the same time, will
Battery temperature is controlled in 20~40 DEG C of optimum temperature ranges;Simultaneously by control flow control valve opening, it is cold to adjust different batteries
But the coolant rate of branch, by the control of the battery temperature difference within 5 DEG C, it is ensured that the uniformity of battery temperature field distribution.The present invention
Optimized control can be carried out to battery temperature, improve the environmental suitability of battery, promote market of the battery on electric car
Change application.
As shown in figure 5, a kind of controlling party of liquid cooling battery thermal management system general to example IV as embodiment one
Method, refrigerating mode control logic are as follows: the battery maximum temperature T_max and minimum temperature T_ that controller real-time reception battery is sent
min.When T_max >=30 DEG C andHeat management system enters " self-loopa mode " controller and controls one
Or multiple flow control valves are fully open, flow control valve opening 100%, while opening water pump and being recycled by coolant liquid to battery
Case heat dissipation.
Further, if battery temperature still rises, when T_max >=35 DEG C andController control is opened
Compressor and fan are opened, while controlling the unlatching of electric expansion valve, is forced to coolant liquid refrigeration;Pass through sensor 1 and biography simultaneously
The temperature of the detection coolant liquid of sensor 2.Controller adjusts the temperature of coolant liquid water outlet by the opening size of adjusting electric expansion valve
Degree, by the control of battery maximum temperature within 40 DEG C, the cooling liquid temperature difference at sensor 1 and sensor 2 is controlled within 8 DEG C.
Further, after opening forced refrigeration mode, battery temperature decline, when T_max≤30 DEG C or Controller controls compressor shutdown, while controlling electric expansion valve closing, and heat management system returns to " self-loopa mould
Formula ";When T_max≤28 DEG C orController switches off the pump and all flow control valves, heat management system
System is shut down.
As shown in fig. 6, can be shared as embodiment one to example IV, a kind of battery charging heating heat management control
Mode, logic control are as follows: the battery maximum temperature T_max and minimum temperature T_ that the controller real-time reception battery is sent
min.Battery is in discharge mode, when T_min≤10 DEG C and Battery heating is opened in controller control
Device;When T_min >=20 DEG C orBattery heating device is closed in controller control.Battery is in external
Charge mode, when T_min≤15 DEG C andBattery heating device is opened in controller control;Work as T_min
>=20 DEG C or Battery heating device is closed in controller control.
Threshold value is compared in the setting of specific battery maximum temperature T_max and minimum temperature T_min in above-described embodiment, at it
In his embodiment, it can be adjusted or become depending on concrete conditions such as the model of specific battery, type, capacity, number, connected loads
More.Above-mentioned to be changed to what those skilled in the art were readily apparent that, details are not described herein, but ought to belong to the protection model of the disclosure
It encloses.
It should be understood by those skilled in the art that, embodiment of the disclosure can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the disclosure
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the disclosure, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The disclosure is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present disclosure
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this field
For art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repair
Change, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.
Although above-mentioned be described in conjunction with specific embodiment of the attached drawing to the disclosure, model not is protected to the disclosure
The limitation enclosed, those skilled in the art should understand that, on the basis of the technical solution of the disclosure, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within the protection scope of the disclosure.
Claims (10)
1. a kind of liquid cooling battery thermal management system, it is characterized in that: including controller, refrigerating circuit and battery temperature control loop,
Wherein:
The refrigerating circuit includes compressor, condenser and heat exchanger, and one end outlet B of the heat exchanger is connected by pipeline
Compressor, compressor and condenser are connect by piping connection, the outlet of condenser passes through piping connection to one end of heat exchanger
Import A;
The battery temperature control loop includes several liquid cooling battery cases, sensor and heater, one end of the heat exchanger
D is exported by piping connection to the heater, the outlet of heater is divided into several branches by pipeline, and each branch is by independent
Flow control valve control, and be connected to one end of corresponding liquid cooling battery case, the other end of the liquid cooling battery case passes through pipe
Road is connected to one end import C of the heat exchanger;
Temperature sensor is provided at the outlet D and import C of the heat exchanger;
The controller receives the signal of temperature sensor acquisition, and electric with compressor, condenser, flow control valve and heater
Connection, the signal acquired according to battery temperature in liquid cooling battery case and temperature sensor is to compressor, condenser, flow control valve
It is controlled with heater.
2. a kind of liquid cooling battery thermal management system as described in claim 1, it is characterized in that: each liquid cooling battery case is configured with one
Battery heating device.
3. a kind of liquid cooling battery thermal management system as described in claim 1, it is characterized in that: each branch is connected with several series connection
Liquid cooling battery case.
4. a kind of liquid cooling battery thermal management system as described in claim 1, it is characterized in that: the battery temperature control loop is also
Including water tank and water pump, the water tank is connected to one end front end import C of the heat exchanger, and the water pump is arranged in the heat
On one end outlet D of exchanger and the connecting line of heater;
Or, the water filling port of the water tank has gauze element, and liquid cooling instruction device is provided on the water tank, the liquid cooling instruction
Device and controller;
Or, the water pump is electrically connected with the controller.
5. a kind of liquid cooling battery thermal management system as described in claim 1, it is characterized in that: the surface of the heat exchanger is arranged
There is patch heat-insulation and heat-preservation set.
6. a kind of liquid cooling battery thermal management system as described in claim 1, it is characterized in that: one end import of the heat exchanger
The front end A is provided with electric expansion valve, and electric expansion valve is electrically connected with the controller.
7. a kind of liquid cooling battery thermal management system as described in claim 1, it is characterized in that: the heat exchanger is parallel with a steaming
Device is sent out, the evaporator is connected with evaporation fan;
Or, the heater is ptc heater.
8. a kind of electric car, using liquid cooling battery thermal management system such as of any of claims 1-7.
9. based on the refrigeration control method of system of any of claims 1-7, it is characterized in that: controller reception is each
Liquid cooling battery case send battery maximum temperature and minimum temperature, when satisfaction first impose a condition when, controller control one or
Multiple flow control valves are fully open, while opening water pump and being recycled by coolant liquid and being radiated to each liquid cooling battery case;If battery
Temperature still rises, and when satisfaction second imposes a condition, compressor is opened in controller control, while controlling opening for electric expansion valve
It opens, is forced to coolant liquid refrigeration;The temperature of coolant liquid is detected by temperature sensor simultaneously, controller is by adjusting electronic expansion
The opening size of valve adjusts the temperature of coolant liquid water outlet, by the control of battery maximum temperature within given threshold, two temperature
Cooling liquid temperature difference at sensor controls within setting range, until battery maximum temperature and minimum temperature drop to third and set
Fixed condition, controller switches off the pump and all flow control valves.
10. based on the method for heating and controlling of system of any of claims 1-7, it is characterized in that: controller connects in real time
Battery maximum temperature and minimum temperature that battery is sent are received, when battery is in discharge mode, when meeting the 4th setting condition, control
Battery heating device is opened in device control processed, and when meeting the 5th setting condition, battery heating device is closed in controller control;
When battery is in external charge mode, when meeting the 6th setting condition, battery heating device is opened in controller control;When
When meeting the 7th setting condition, battery heating device is closed in controller control.
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