CN110979100A - Battery thermal management system, battery thermal management method and hydrogen energy automobile - Google Patents
Battery thermal management system, battery thermal management method and hydrogen energy automobile Download PDFInfo
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- CN110979100A CN110979100A CN201911275606.5A CN201911275606A CN110979100A CN 110979100 A CN110979100 A CN 110979100A CN 201911275606 A CN201911275606 A CN 201911275606A CN 110979100 A CN110979100 A CN 110979100A
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- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
- B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
- B60L58/33—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by cooling
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
- B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
- B60L58/34—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by heating
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a battery thermal management system, a battery thermal management method and a hydrogen energy automobile, wherein the battery thermal management system comprises a main circuit, a battery cooling liquid cooling branch circuit, a heating branch circuit and a reversing device; the main road is connected with a battery pack; the battery cooling liquid cooling branch is connected with a first water pump and a cooler, the cooler, an air conditioner compressor, an air conditioner evaporator, an electromagnetic valve and an air conditioner condenser form a battery coolant cooling loop, when the cooler is in a non-running state, the battery cooling branch and the main path form a battery loop, and when the cooler is in a running state, the battery cooling branch and the main path form a battery cooling liquid cooling loop; the heating branch is connected with a heating device and a second water pump; the reversing device is connected in the heating branch and used for switching the heating loop between a communication state and a cut-off state. The technical scheme provided by the invention has the beneficial effects that: the battery pack of the whole vehicle under different environments is fully protected, and the safety of the whole vehicle is improved.
Description
Technical Field
The invention relates to the technical field of vehicle battery thermal management, in particular to a battery thermal management system, a battery thermal management method and a hydrogen energy automobile.
Background
At present, a domestic new energy automobile Battery Thermal Management System (BTMS) mainly comprises: 1) forced air cooling and discharging self-warming and warm keeping; 2) internal water cooling and discharging self-heating and warm keeping; 3) external independent water cooling and the like. The above solutions have the following problems: 1. the battery pack adopting air cooling has limited cooling effect, can not meet the heat dissipation requirement under the limit working condition of the battery, and has risks in the safety of the battery; 2. the cooling effect of the independent water-cooling battery thermal management system can meet the requirement, but the integration is not high, and the energy utilization rate of the whole vehicle is low; 3. the battery pack generates heat through self power generation in a low-temperature environment, the power generation rate is low, the heat preservation effect is poor, and the requirement of the whole vehicle working condition cannot be met.
Disclosure of Invention
In view of this, embodiments of the present invention provide a battery thermal management system, a battery thermal management method, and a hydrogen energy vehicle, and aim to provide a non-independently controlled battery pack liquid cooling thermal management branch structure, which can meet the heat dissipation requirements of various working conditions of a battery, and ensure that the charge-discharge efficiency and the service life of the battery reach design indexes.
An embodiment of the present invention provides a battery thermal management system, including:
the main road is connected with a battery pack;
the battery cooling liquid cooling branch circuit is connected with a first water pump and a cooler, the cooler, an air conditioner compressor, an air conditioner evaporator, an electromagnetic valve and an air conditioner condenser form a battery coolant cooling loop, when the cooler is in a non-running state, the battery cooling liquid cooling branch circuit and the main circuit form a battery loop, and when the cooler is in a running state, the battery cooling liquid cooling branch circuit and the main circuit form a battery cooling liquid cooling loop;
the heating branch is connected with a heating device and a second water pump; and the number of the first and second groups,
and the reversing device is connected in the heating branch and used for switching the heating loop between a communication state and a cut-off state.
Further, the heating device is a PTC heater.
Furthermore, the reversing device comprises a first reversing device which is a three-way reversing valve, a first interface of the first reversing device is connected with the battery pack, and a second interface of the first reversing device is connected with the PTC heater.
Further, the reversing device further comprises a second reversing device, and the second reversing device is connected between the battery pack and the second water pump.
Furthermore, the second reversing device is a three-way reversing valve, a first interface of the second reversing device is connected with the battery pack, and a second interface of the second reversing device is connected with the second water pump.
The embodiment of the invention also provides a battery thermal management method, which uses the battery thermal management system, and comprises the following steps:
s1, acquiring the temperature of the battery pack in real time;
s2, if the temperature of the battery pack is lower than the lowest temperature, controlling the reversing device to enable the heating loop to be in a communicated state, so that the heating device heats the battery pack;
s3, if the temperature of the battery pack is greater than or equal to the lowest temperature and less than or equal to the highest temperature, controlling the reversing device to enable the heating loop to be in an off state, and controlling the cooler to be in a non-running state, so that the battery cooling branch and the main circuit form a battery loop;
and S4, if the temperature of the battery pack is higher than the maximum temperature, controlling the reversing device to enable the heating loop to be in an off state, and controlling the cooler to be in an operating state, so that the battery cooling branch and the main path form a battery cooling loop.
Further, after step S4, the method further includes: s5, when the operation speed of the air conditioner compressor is the maximum value, if the temperature of the battery pack is always greater than the maximum temperature within the preset time, sending an alarm instruction, and limiting the charging/discharging power of the battery pack until the temperature of the battery pack is less than the maximum temperature.
Further, in step S3, the operating speed of the first water pump V1 is △ T, the difference between the temperature T of the battery pack and the minimum temperature is K1 × △ T, and K1 is a positive value.
Further, in step S4, the operating speed of the air conditioner compressor is V2, the difference between the temperature T of the battery pack and the minimum temperature is △ T, V is K2 × △ T, and K2 is a positive value.
Embodiments of the present invention also provide a hydrogen-powered vehicle including a battery thermal management system as described above.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: when the temperature of the battery pack is too high, the temperature of the battery pack can be reduced by utilizing the phase change principle of an air-conditioning refrigerant and adopting a cooler for heat exchange; when the temperature of the battery pack is in the normal operation range, the battery pack is positioned in a battery loop to normally operate; when the temperature of battery package was crossed low, through the intercommunication interface of adjustment switching-over device, made heating circuit intercommunication, adopted heating device to heat for the battery package, can fully protect the battery package of whole car under different environment, promoted whole car security, this kind of battery package liquid cooling heat management branch structure of non-independent control can satisfy the heat dissipation demand of each operating mode of battery, ensures that battery charge-discharge efficiency and life-span reach the design index.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a battery thermal management system provided in the present invention.
In the figure: the air conditioner comprises a battery pack 1, a first water pump 2, a cooler 3, an air conditioner compressor 4, an air conditioner evaporator 5, an electromagnetic valve 6, an air conditioner condenser 7, a heating device 8, a second water pump 9, a first reversing device 10, a second reversing device 11, a warm air core body 12, a fan 13, a first interface A, a second interface B and a third interface C.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
The invention provides a hydrogen energy automobile comprising a battery thermal management system, wherein the invention point of the invention is on the battery thermal management system, and fig. 1 is an embodiment of the battery thermal management system provided by the invention.
Referring to fig. 1, the battery thermal management system includes a main circuit, a battery cooling liquid cooling branch circuit, a heating branch circuit, and a reversing device.
The main path is connected with a battery pack 1, a first water pump 2 and a cooler 3(chiller) are connected in the battery cooling liquid cooling branch path, the cooler 3, an air conditioner compressor 4, an air conditioner evaporator 5, an electromagnetic valve 6 and an air conditioner condenser 7 form a battery coolant cooling loop, when the cooler 3 is in a non-running state, the battery cooling liquid cooling branch path and the main path form a battery loop, and when the cooler 3 is in a running state, the battery cooling liquid cooling branch path and the main path form a battery cooling liquid cooling loop; a heating device 8 and a second water pump 9 are connected in the heating branch; the reversing device is connected in the heating branch and used for switching the heating loop between a communication state and a cut-off state.
Specifically, the heating device 8 is a PTC heater, the reversing device includes a first reversing device 10 and a second reversing device 11, the first reversing device 10 and the second reversing device 11 are three-way reversing valves, a first interface a of the first reversing device 10 is connected with the battery pack 1, and a second interface B of the first reversing device 10 is connected with the PTC heater. The second reversing device 11 is connected between the battery pack 1 and the second water pump 9, specifically, a first interface a of the second reversing device 11 is connected with the battery pack 1, and a second interface B of the second reversing device 11 is connected with the second water pump 9. The third interfaces C of the first reversing device 10 and the second reversing device 11 are respectively an air inlet and an air outlet, and are connected with the warm air core 12 to form a warm air loop, and the fan 13 is placed near the warm air core 12 to form warm air to be guided into the passenger cabin.
The battery pack 1 and the heater core 12 are connected in series to the circuit formed by the PTC heater and the second water pump 9 through the stop valves, respectively, as required by those skilled in the art, by replacing the three-way directional valve with any other feasible control valve, such as two stop valves.
The embodiment of the invention also provides a battery thermal management method, which comprises the following steps:
s1, acquiring the temperature of the battery pack 1 in real time;
and S2, if the temperature of the battery pack 1 is lower than the lowest temperature, controlling the reversing device to enable the heating loop to be in a communicated state, so that the heating device 8 heats the battery pack 1.
When the temperature of the battery pack 1 is lower than the lowest temperature at which the battery pack 1 can normally operate, the first interface a and the second interface B of the first reversing device 10 and the second reversing device 11 are opened, so that the main path and the heating branch form a heating loop, the PTC heater can heat the battery pack 1, and the temperature of the battery pack 1 is increased to a temperature range at which the battery pack 1 can normally operate.
S3, if the temperature of the battery pack 1 is greater than or equal to the minimum temperature and less than or equal to the maximum temperature at which the battery pack 1 can operate normally, the first interface a and the second interface B of the first reversing device 10 and the second reversing device 11 are closed, the reversing devices are controlled to cut off the heating circuit, and the cooler 3 is controlled not to operate, so that the battery cooling liquid cooling branch and the main circuit form a battery circuit, and the battery pack 1 operates normally without heating or cooling the battery pack 1. specifically, the operating speed V1 of the first water pump 2 is set such that the difference between the temperature T of the battery pack 1 and the minimum temperature is △ T, V — K1 × △ T, and K1 is a positive value, and when the temperature of the battery pack 1 is higher, the operating speed of the first water pump 2 is lower, thereby preventing the operating speed of the first water pump 2 from being too high, and the temperature of the battery pack 1 being higher than the maximum temperature.
S4, if the temperature of the battery pack 1 is higher than the highest temperature at which the battery pack 1 can normally operate, closing the first interface a and the second interface B of the first reversing device 10 and the second reversing device 11, controlling the reversing devices to stop the heating circuit, controlling the cooler 3 to be in an operating state, so that the battery cooling liquid cooling branch and the main circuit form a battery cooling liquid cooling circuit, starting the air conditioning system, cooling the battery pack 1 by the cooler 3, and reducing the temperature of the battery pack 1 to a temperature range in which the battery pack can normally operate.
S5 is configured to, when the operating speed of the air conditioner compressor 4 is the maximum value, send an alarm instruction to limit the charging/discharging power of the battery pack 1 until the temperature of the battery pack 1 is lower than the maximum temperature within a preset time, where the preset time may be set according to actual conditions, and if the operating speed of the air conditioner compressor 4 is the maximum value and the temperature of the battery pack 1 is higher than the maximum temperature, the cooler 3 is ineffective to cool the battery pack 1, which indicates that the temperature of the battery pack 1 is too high, limit the charging/discharging power of the battery pack 1, reduce the heating rate of the battery pack 1 to accelerate the reduction of the temperature, and send an alarm to remind a driver to improve the safety performance of the vehicle.
In the technical scheme provided by the invention, when the temperature of the battery pack 1 is overhigh, the temperature of the battery pack 1 can be reduced by utilizing the phase change principle of an air-conditioning refrigerant and adopting the cooler 3 for heat exchange; when the temperature of the battery pack 1 is in the normal operation range, the battery pack 1 is positioned in a battery loop to normally operate; when the temperature of the battery pack 1 is too low, the heating loop is communicated by adjusting the communication interface of the reversing device, the PTC heater is used for heating the battery pack 1, the battery pack 1 of the whole vehicle in different environments can be fully protected, the safety of the whole vehicle is improved, and the liquid cooling heat management branch structure of the battery pack 1 which is not independently controlled can meet the heat dissipation requirements of various working conditions of the battery, and ensure that the charge-discharge efficiency and the service life of the battery reach design indexes.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A battery thermal management system, comprising:
the main road is connected with a battery pack;
the battery cooling liquid cooling branch circuit is connected with a first water pump and a cooler, the cooler, an air conditioner compressor, an air conditioner evaporator, an electromagnetic valve and an air conditioner condenser form a battery coolant cooling loop, when the cooler is in a non-running state, the battery cooling liquid cooling branch circuit and the main circuit form a battery loop, and when the cooler is in a running state, the battery cooling liquid cooling branch circuit and the main circuit form a battery cooling liquid cooling loop;
the heating branch is connected with a heating device and a second water pump; and the number of the first and second groups,
and the reversing device is connected in the heating branch and used for switching the heating loop between a communication state and a cut-off state.
2. The battery thermal management system of claim 1, wherein the heating device is a PTC heater.
3. The battery thermal management system of claim 2, wherein the reversing device comprises a first reversing device, the first reversing device is a three-way reversing valve, a first port of the first reversing device is connected to the battery pack, and a second port of the first reversing device is connected to the PTC heater.
4. The battery thermal management system of claim 3, wherein the reversing device further comprises a second reversing device connected between the battery pack and the second water pump.
5. The battery thermal management system of claim 4, wherein the second reversing device is a three-way reversing valve, a first port of the second reversing device is connected to the battery pack, and a second port of the second reversing device is connected to the second water pump.
6. A battery thermal management method using the battery thermal management system according to any one of claims 1 to 5, comprising the steps of:
s1, acquiring the temperature of the battery pack in real time;
s2, if the temperature of the battery pack is lower than the lowest temperature, controlling the reversing device to enable the heating loop to be in a communicated state, so that the heating device heats the battery pack;
s3, if the temperature of the battery pack is greater than or equal to the lowest temperature and less than or equal to the highest temperature, controlling the reversing device to enable the heating loop to be in an off state, and controlling the cooler to be in a non-running state, so that the battery cooling branch and the main circuit form a battery loop;
and S4, if the temperature of the battery pack is higher than the maximum temperature, controlling the reversing device to enable the heating loop to be in an off state, and controlling the cooler to be in an operating state, so that the battery cooling branch and the main path form a battery cooling loop.
7. The battery thermal management method of claim 6, after step S4, further comprising: s5, when the operation speed of the air conditioner compressor is the maximum value, if the temperature of the battery pack is always greater than the maximum temperature within the preset time, sending an alarm instruction, and limiting the charging/discharging power of the battery pack until the temperature of the battery pack is less than the maximum temperature.
8. The battery thermal management method according to claim 6, wherein in step S3, the operating speed of the first water pump is V1, the difference between the temperature T of the battery pack and the minimum temperature is △ T, V-K1 △ T, and K1 is positive.
9. The battery thermal management method according to claim 6, wherein in step S4, the operating speed of the air conditioner compressor is V2, the difference between the temperature T of the battery pack and the minimum temperature is △ T, V-K2 △ T, and K2 is a positive value.
10. A hydrogen-powered vehicle characterized by comprising the battery thermal management system according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911275606.5A CN110979100A (en) | 2019-12-12 | 2019-12-12 | Battery thermal management system, battery thermal management method and hydrogen energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911275606.5A CN110979100A (en) | 2019-12-12 | 2019-12-12 | Battery thermal management system, battery thermal management method and hydrogen energy automobile |
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| CN110979100A true CN110979100A (en) | 2020-04-10 |
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| CN201911275606.5A Pending CN110979100A (en) | 2019-12-12 | 2019-12-12 | Battery thermal management system, battery thermal management method and hydrogen energy automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112133979A (en) * | 2020-09-21 | 2020-12-25 | 长城汽车股份有限公司 | Power battery temperature control method and device and vehicle |
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| CN112133979A (en) * | 2020-09-21 | 2020-12-25 | 长城汽车股份有限公司 | Power battery temperature control method and device and vehicle |
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