CN110581330A - Vehicle battery pack refrigerant direct cooling heat dissipation and heating device and temperature control method thereof - Google Patents
Vehicle battery pack refrigerant direct cooling heat dissipation and heating device and temperature control method thereof Download PDFInfo
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- CN110581330A CN110581330A CN201910912245.4A CN201910912245A CN110581330A CN 110581330 A CN110581330 A CN 110581330A CN 201910912245 A CN201910912245 A CN 201910912245A CN 110581330 A CN110581330 A CN 110581330A
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- 238000001816 cooling Methods 0.000 title claims abstract description 49
- 239000003507 refrigerant Substances 0.000 title claims abstract description 27
- 238000010438 heat treatment Methods 0.000 title claims abstract description 22
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000004378 air conditioning Methods 0.000 claims description 10
- 239000002826 coolant Substances 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- 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
- H01M10/63—Control systems
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
-
- 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
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
-
- 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
-
- 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)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
Abstract
The invention discloses a vehicle battery pack refrigerant direct cooling heat dissipation and heating device and a temperature control method thereof; the device comprises two electronic circulation valves, a collecting pipe, a cooling pipe, a temperature control system and the like; the temperature control system comprises a controller, a temperature sensor, a PTC heater, a liquid temperature sensor and the like; the PTC heaters are positioned in the cooling circulation loop and are orderly arranged among the cooling pipes; the battery pack controller detects the temperature signal of the battery pack through each sensor and sends the temperature signal to the battery pack controller, the battery pack controller judges whether the battery pack controller is located in a proper temperature interval, an internal control instruction is read to start the PTC heater to increase the temperature of the battery pack or reduce the temperature of the battery pack through a refrigerant direct cooling heat dissipation system, and the vehicle battery pack is guaranteed to be always located in the proper temperature interval, so that the working efficiency of a vehicle battery system is improved.
Description
Technical Field
The invention relates to the field of vehicle battery pack heat management, in particular to a vehicle battery pack refrigerant direct-cooling heat dissipation and heating device and a temperature control method thereof.
Background
the battery pack of the electric automobile can normally and efficiently work at a proper temperature, and the cycle charge-discharge efficiency, the service life and other performances of the battery pack can be influenced by overhigh or overlow temperature. The battery pack can generate a large amount of heat in the charging and discharging processes, and a cooling device is generally installed on the battery pack; meanwhile, the performance of the battery can be reduced when the temperature is too low, and the battery can not work normally when the temperature is serious, so that a heating device needs to be additionally arranged, and the heating device and the battery are matched with each other to enable the battery pack to work in a normal temperature range.
in the prior art, heating and radiating devices generally exist independently, the heating device adopts a heating sheet to generate heat, and the radiating device adopts a water-cooled type or an air-cooled type.
The air-cooled heat dissipation efficiency is limited, and the application is gradually reduced.
The water-cooled battery pack generally comprises a heat exchanger, a water channel circulating system, a high energy consumption, and large weight and volume of each component, which is not favorable for light weight of the battery pack.
Disclosure of Invention
The present invention is directed to overcoming the drawbacks and disadvantages of the prior art, and to providing a direct cooling, heat dissipating and heating device for a vehicle battery pack and a temperature control method thereof. The device is skillfully and organically combined with the existing vehicle refrigerating unit, and under the condition of keeping the normal operation of the existing vehicle refrigerating unit, the heat management performance of the battery pack is greatly improved and optimized; the battery pack is favorable for light weight requirements of the battery pack, the structural layout is simplified, and the resource integration degree is greatly improved.
the invention is realized by the following technical scheme:
a vehicle battery pack refrigerant direct cooling heat dissipation and heating device comprises a battery pack circulation loop device and a temperature control system, wherein the battery pack circulation loop device and the temperature control system are arranged around a battery module 1; the battery pack circulation loop device is connected in parallel at two ends of an evaporator of the automobile air-conditioning refrigerating unit; the battery pack circulation loop device comprises a first electronic circulation valve 2, a collecting pipe 3, a cooling pipe 4 and a second electronic circulation valve 5;
the temperature control system comprises: the battery pack temperature controller, the battery pack temperature sensor, the PTC heater 6, the PTC temperature sensor and the liquid temperature sensor;
The collecting pipe 3 is divided into an upper collecting pipe and a lower collecting pipe which are respectively connected in parallel at the refrigerant inlet/outlet end of the evaporator; the upper collecting pipe and the lower collecting pipe are positioned outside the battery pack; a plurality of cooling pipes 4 are communicated in parallel between the upper collecting pipe and the lower collecting pipe, and the pipe body of each cooling pipe 4 is respectively attached between each battery monomer in the battery pack;
The PTC heaters 6 are distributed among the battery monomers; the plurality of PTC temperature sensors are arranged around each PTC heater 6 and used for collecting temperature signals around the PTC heaters in real time;
the number of the first electronic circulation valves 2 is four, and the first electronic circulation valves are respectively arranged at the inlet ends and the outlet ends of the upper collecting pipe and the lower collecting pipe and are used for controlling the flow and the speed of a cooling medium in the collecting pipe 3; the plurality of second electronic circulation valves 5 are provided at the upper end or the lower end of each cooling pipe 4.
the second electronic circulation valve 5, the battery pack temperature sensor, the PTC heater 6, the liquid temperature sensor and the first electronic circulation valve 2 are respectively electrically connected with a battery pack temperature controller.
the battery pack temperature sensors are distributed on the outer wall of the battery pack; the liquid temperature sensors are multiple and distributed on the outer wall of the pipe body of the cooling pipes 4.
A vehicle battery pack refrigerant direct cooling heat dissipation and heating method comprises the following steps:
the battery pack temperature sensor transmits the temperature information of each local part of the battery pack acquired in real time to the battery pack temperature controller, and when the temperature of the battery pack is in a set proper temperature interval, the four first electronic circulation valves 2 are all in a closed state at the moment, and the PTC heater 6 is in a power-off state;
When the temperature information transmitted to the battery pack temperature controller by the battery pack temperature sensor is lower than the proper temperature range, the battery pack temperature controller turns on the PTC heater 6, the heat generated by the PTC heater 6 is conducted to the battery pack through the heat transfer glue, so that the temperature of the battery pack gradually rises, and when the temperature information fed back to the battery pack temperature controller by the PTC temperature sensor is in the preset proper temperature range, the battery pack temperature controller turns off the PTC heater 6, so that the battery pack stops being heated;
When the temperature information transmitted to the battery pack temperature controller by the battery pack temperature sensor is higher than an appropriate temperature range, the battery pack temperature controller starts the automobile air-conditioning refrigerating unit to start refrigeration, at the moment, the battery pack temperature controller opens the first electronic circulation valve 2, so that a refrigerant passes through a collecting pipe 3 and a cooling pipe 4 of the battery pack circulation loop device, the cooling pipe 4 takes away heat generated by the battery pack, and finally the refrigerant flows back to the automobile air-conditioning refrigerating unit to finish direct cooling circulation of the battery pack refrigerant; meanwhile, the battery pack temperature sensor still feeds back a battery pack temperature signal to the battery pack temperature controller in real time, the battery pack temperature controller compares the temperature change rate, and if the temperature is in a gradually decreasing trend, the current situation is kept until the temperature of the battery pack is reduced to a proper temperature interval; if the temperature reduction speed is lower than the preset speed or the temperature is in an increasing trend, the temperature controller of the battery pack adjusts the opening degree of the second electronic circulation valve 5 to increase the refrigerant circulation and improve the heat dissipation rate until the temperature of the battery pack is reduced to a set proper temperature interval.
Compared with the prior art, the invention has the following advantages and effects:
compared with the traditional liquid cooling system, the invention reduces the liquid cooling energy storage devices and the heat exchange devices.
The cold and heat source of the invention is from the vehicle self-contained refrigerating unit. The invention organically integrates the upper collecting pipe, the lower collecting pipe, the electronic flow valve and other sensor components which are connected in parallel at the refrigerant inlet/outlet end of the evaporator. The integration not only preserves the working performance of the original vehicle refrigeration unit, but also solves the purpose of heating or cooling the vehicle battery pack. Under the condition of limited space of the vehicle, the structural integration has positive application value. The heat generated by the battery pack is taken away through the cooling pipe and finally flows back to the automobile air-conditioning refrigerating unit to complete the direct cooling circulation of the battery pack refrigerant; meanwhile, the battery pack temperature sensor still feeds back a battery pack temperature signal to the battery pack temperature controller in real time, the battery pack temperature controller compares the temperature change rate, and if the temperature is in a gradually decreasing trend, the current situation is kept until the temperature of the battery pack is reduced to a proper temperature interval; if the temperature reduction speed is lower than the preset speed or the temperature is in an increasing trend, the temperature controller of the battery pack adjusts the opening degree of the second electronic circulation valve to increase the refrigerant circulation and improve the heat dissipation rate until the temperature of the battery pack is reduced to a set proper temperature interval. Through the structural integration and the optimization control process, the heat management performance of the battery pack is greatly improved and optimized;
The temperature control device is skillfully and organically combined with the vehicle refrigeration system through a simple and feasible technical means, so that the temperature of the vehicle battery pack can be well controlled within a proper range, and the working efficiency of the power battery pack is improved.
drawings
Fig. 1 is a schematic structural diagram of a battery pack circulation loop device according to the present invention.
FIG. 2 is an electrical block diagram of a temperature control system of the present invention.
fig. 3 is a schematic diagram of the combination relationship between the battery pack circulation loop device of the present invention and the conventional automobile refrigeration unit.
FIG. 4 is a flow chart of the direct cooling heat dissipation and heating control process of the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Examples
as shown in fig. 1-4. The invention discloses a vehicle battery pack refrigerant direct cooling heat dissipation and heating device, which comprises a battery pack circulation loop device and a temperature control system, wherein the battery pack circulation loop device and the temperature control system are arranged around a battery module 1; the battery pack circulation loop device is connected in parallel at two ends of an evaporator of the automobile air-conditioning refrigerating unit; the battery pack circulation loop device comprises a first electronic circulation valve 2, a collecting pipe 3, a cooling pipe 4 and a second electronic circulation valve 5;
The temperature control system comprises: a battery pack temperature controller (a double-temperature double-control electronic temperature control module), a battery pack temperature sensor, a PTC heater 6 (a 12-220V constant-temperature PTC aluminum shell ceramic heater heating plate/sheet), a PTC temperature sensor and a liquid temperature sensor;
The collecting pipe 3 is divided into an upper collecting pipe and a lower collecting pipe which are respectively connected in parallel at the refrigerant inlet/outlet end of the evaporator; the upper collecting pipe and the lower collecting pipe are positioned outside the battery pack; a plurality of cooling pipes 4 are communicated in parallel between the upper collecting pipe and the lower collecting pipe, and the pipe body of each cooling pipe 4 is respectively attached between each battery monomer in the battery pack;
The PTC heaters 6 are distributed among the battery monomers; the plurality of PTC temperature sensors are arranged around each PTC heater 6 and used for collecting temperature signals around the PTC heaters in real time;
The number of the first electronic circulation valves 2 is four, and the first electronic circulation valves are respectively arranged at the inlet ends and the outlet ends of the upper collecting pipe and the lower collecting pipe and are used for controlling the flow and the speed of a cooling medium in the collecting pipe 3; the plurality of second electronic circulation valves 5 are provided at the upper end or the lower end of all the cooling pipes 4 or a part of the cooling pipes 4.
the second electronic circulation valve 5, the battery pack temperature sensor, the PTC heater 6, the liquid temperature sensor and the first electronic circulation valve 2 are respectively electrically connected with a battery pack temperature controller.
The battery pack temperature sensors are distributed on the outer wall of the battery pack; the liquid temperature sensors are multiple and distributed on the outer wall of the pipe body of the cooling pipes 4.
The refrigerant direct cooling heat dissipation and heating control process of the vehicle battery pack comprises the following steps:
the battery pack temperature sensor transmits the temperature information of each local part of the battery pack acquired in real time to the battery pack temperature controller, and when the temperature of the battery pack is in a set proper temperature interval, the four first electronic circulation valves 2 are all in a closed state at the moment, and the PTC heater 6 is in a power-off state;
When the temperature information transmitted to the battery pack temperature controller by the battery pack temperature sensor is lower than the proper temperature range, the battery pack temperature controller turns on the PTC heater 6, the heat generated by the PTC heater 6 is conducted to the battery pack through the heat transfer glue, so that the temperature of the battery pack gradually rises, and when the temperature information fed back to the battery pack temperature controller by the PTC temperature sensor is in the preset proper temperature range, the battery pack temperature controller turns off the PTC heater 6, so that the battery pack stops being heated;
When the temperature information transmitted to the battery pack temperature controller by the battery pack temperature sensor is higher than an appropriate temperature range, the battery pack temperature controller starts the automobile air-conditioning refrigerating unit to start refrigeration, at the moment, the battery pack temperature controller opens the first electronic circulation valve 2, so that a refrigerant passes through a collecting pipe 3 and a cooling pipe 4 of the battery pack circulation loop device, the refrigerant in the cooling pipe 4 takes away heat generated by the battery pack and finally flows back to the automobile air-conditioning refrigerating unit, and the direct cooling circulation of the refrigerant of the battery pack is completed; meanwhile, the battery pack temperature sensor still feeds back a battery pack temperature signal to the battery pack temperature controller in real time, the battery pack temperature controller compares the temperature change rate, and if the temperature is in a gradually decreasing trend, the current situation is kept until the temperature of the battery pack is reduced to a proper temperature interval; if the temperature reduction speed is lower than the preset speed or the temperature is in an increasing trend, the temperature controller of the battery pack adjusts the opening degree of the second electronic circulation valves 5 or opens all the second electronic circulation valves 5 to increase the refrigerant circulation and improve the heat dissipation rate until the temperature of the battery pack is reduced to be within the set proper temperature interval.
as described above, the present invention can be preferably realized.
The embodiments of the present invention are not limited to the above-described embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention.
Claims (4)
1. A vehicle battery pack refrigerant direct cooling heat dissipation and heating device comprises a battery pack circulation loop device and a temperature control system, wherein the battery pack circulation loop device and the temperature control system are arranged around a battery module (1); the method is characterized in that: the battery pack circulation loop device is connected in parallel at two ends of an evaporator of the automobile air-conditioning refrigerating unit; the battery pack circulation loop device comprises a first electronic circulation valve (2), a collecting pipe (3), a cooling pipe (4) and a second electronic circulation valve (5);
the temperature control system comprises: the battery pack temperature controller, the battery pack temperature sensor, the PTC heater (6), the PTC temperature sensor and the liquid temperature sensor;
the collecting pipe (3) is divided into an upper collecting pipe and a lower collecting pipe, and the upper collecting pipe and the lower collecting pipe are respectively connected in parallel at the refrigerant inlet/outlet end of the evaporator; the upper collecting pipe and the lower collecting pipe are positioned outside the battery pack; a plurality of cooling pipes (4) are communicated in parallel between the upper collecting pipe and the lower collecting pipe, and the pipe body of each cooling pipe (4) is respectively attached between each battery monomer in the battery pack;
The PTC heaters (6) are distributed among the battery cells; the plurality of PTC temperature sensors are arranged around each PTC heater (6) and used for acquiring temperature signals around the PTC heaters in real time;
The number of the first electronic circulation valves (2) is four, and the four first electronic circulation valves are respectively arranged at the inlet ends and the outlet ends of the upper collecting pipe and the lower collecting pipe and are used for controlling the flow and the speed of a cooling medium in the collecting pipe (3); the second electronic circulation valves (5) are provided in plurality and are respectively provided at the upper end or the lower end of each cooling pipe (4).
2. the vehicle battery pack cooling medium direct-cooling heat dissipation and heating device of claim 1, wherein: the second electronic circulation valve (5), the battery pack temperature sensor, the PTC heater (6), the liquid temperature sensor and the first electronic circulation valve (2) are respectively and electrically connected with the battery pack temperature controller.
3. the vehicle battery pack cooling medium direct-cooling heat dissipation and heating device of claim 2, wherein: the battery pack temperature sensors are distributed on the outer wall of the battery pack; the liquid temperature sensors are multiple and distributed on the outer wall of the pipe body of the cooling pipes (4).
4. A method for directly cooling, radiating and heating a coolant of a vehicle battery pack is realized by the device of claims 1-3, and comprises the following steps:
The battery pack temperature sensor transmits the temperature information of each local part of the battery pack acquired in real time to the battery pack temperature controller, and when the temperature of the battery pack is within a set proper temperature range, the four first electronic circulation valves (2) are all in a closed state, and the PTC heater (6) is in a power-off state;
When the temperature information transmitted to the battery pack temperature controller by the battery pack temperature sensor is lower than the proper temperature range, the battery pack temperature controller turns on the PTC heater (6), the heat generated by the PTC heater (6) is conducted to the battery pack through the heat transfer glue, so that the temperature of the battery pack gradually rises, and when the temperature information fed back to the battery pack temperature controller by the PTC temperature sensor is in the preset proper temperature range, the battery pack temperature controller turns off the PTC heater (6) to stop heating the battery pack;
When the temperature information transmitted to the battery pack temperature controller by the battery pack temperature sensor is higher than an appropriate temperature range, the battery pack temperature controller starts the automobile air-conditioning refrigerating unit to start refrigeration, at the moment, the battery pack temperature controller opens a first electronic circulation valve (2), so that a refrigerant passes through a collecting pipe (3) and a cooling pipe (4) of a battery pack circulation loop device, the cooling pipe (4) takes away heat generated by the battery pack and finally flows back to the automobile air-conditioning refrigerating unit, and the direct cooling circulation of the refrigerant of the battery pack is completed; meanwhile, the battery pack temperature sensor still feeds back a battery pack temperature signal to the battery pack temperature controller in real time, the battery pack temperature controller compares the temperature change rate, and if the temperature is in a gradually decreasing trend, the current situation is kept until the temperature of the battery pack is reduced to a proper temperature interval; if the temperature reduction speed is lower than the preset speed or the temperature is in an increasing trend, the temperature controller of the battery pack adjusts the opening degree of the second electronic circulation valve (5) to increase the circulation of the refrigerant and improve the heat dissipation rate until the temperature of the battery pack is reduced to a set proper temperature interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910912245.4A CN110581330A (en) | 2019-09-25 | 2019-09-25 | Vehicle battery pack refrigerant direct cooling heat dissipation and heating device and temperature control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910912245.4A CN110581330A (en) | 2019-09-25 | 2019-09-25 | Vehicle battery pack refrigerant direct cooling heat dissipation and heating device and temperature control method thereof |
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| CN110581330A true CN110581330A (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910912245.4A Pending CN110581330A (en) | 2019-09-25 | 2019-09-25 | Vehicle battery pack refrigerant direct cooling heat dissipation and heating device and temperature control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668416A (en) * | 2020-06-09 | 2020-09-15 | 中国矿业大学 | Battery thermal management system with turbulence pipe and phase-change material cooperatively coupled and control method thereof |
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| CN111668416A (en) * | 2020-06-09 | 2020-09-15 | 中国矿业大学 | Battery thermal management system with turbulence pipe and phase-change material cooperatively coupled and control method thereof |
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