CN112151912A - Cooling liquid flow direction controllable battery pack, battery pack thermal management system and control method - Google Patents
Cooling liquid flow direction controllable battery pack, battery pack thermal management system and control method Download PDFInfo
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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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- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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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
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring 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
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of 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
- H01M10/62—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
- H01M10/637—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
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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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
-
- 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
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- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a battery pack with controllable flow direction of cooling liquid, a battery pack thermal management system and a control method. The invention eliminates the fixation of long-term temperature distribution, reduces the difference of the heat dissipation of the battery pack monomer, and improves the service life and the performance of the power battery.
Description
Technical Field
The invention relates to the technical field of battery structures of new energy automobiles, in particular to a controllable battery pack for cooling liquid flow direction, a battery pack thermal management system and a control method.
Background
The electric automobile is in line with the development trend and concept of energy conservation, emission reduction and environmental protection, and is now the key point for the development of all automobile enterprises in the world. The performance and the service life of the power battery, which is one of the key parts of the electric automobile, are greatly influenced by temperature. At high temperature, on one hand, the activity of the electrolyte is improved along with the rise of the temperature, the internal resistance of the battery is reduced, and the performance of the battery is improved to a certain extent; on the other hand, the high temperature environment accelerates the decomposition of the electrode material and the electrolyte, which causes permanent damage to the battery and reduces the service life of the battery. The low temperature condition is opposite to the high temperature condition, and the low temperature condition has low electrolyte activity, slow ion migration rate and increased internal resistance, thereby causing the performance attenuation of the battery and influencing the safety of the battery to a certain extent. Therefore, in order to improve the performance and the service life of the battery and ensure the safety of the battery system, people have higher and higher requirements on the thermal management of the battery system. In summary, the cooling methods of the battery system at present mainly include natural cooling, forced air cooling, liquid cooling, and phase change material cooling. Because liquid cooling heat transfer coefficient is high, thermal capacity is great, can effectual improvement battery performance under low temperature or high temperature, promote the uniformity of electric core, consequently liquid cooling is more extensive in pure electric vehicles uses. However, the flow channel of the existing liquid thermal management system is generally longer, which causes a larger temperature difference between the water inlet and the water outlet of the battery, so that some battery cells in the battery pack are always in a higher or lower temperature environment, thereby causing a larger difference in heat dissipation of the single bodies in the power battery, affecting the consistency of the single bodies, and further affecting the service life of the power battery.
Disclosure of Invention
The present invention is directed to solve the above-mentioned drawbacks of the prior art, and provides a controllable battery pack, a thermal management system for the battery pack, and a control method thereof, which can reduce the temperature difference between battery cells in the battery pack, and effectively improve the performance and the service life of a power battery.
To achieve the purpose, the invention provides a coolant flow direction controllable battery pack, which comprises a battery pack shell and a liquid cooling plate arranged in the battery pack shell, and is characterized in that: be provided with battery package water inlet and battery package outlet on the battery package casing, the liquid cooling plate is including first liquid cooling plate pipe connector and the second liquid cooling plate pipe connector that is located its left and right sides, be provided with the coolant liquid runner between first liquid cooling plate pipe connector and the second liquid cooling plate pipe connector, the battery package is internal still be provided with first liquid cooling plate pipe connector and second liquid cooling plate pipe connector pass through the pipeline intercommunication, can change the coolant liquid and be in the device that turns to of flow direction in the coolant liquid runner, turn to the device include with the battery package water inlet pass through the device water inlet of pipeline intercommunication and pass through the pipeline with the device delivery port of battery package outlet intercommunication.
Furthermore, the steering device comprises an electromagnetic steering device, and the electromagnetic steering device comprises a first device pipe interface communicated with the first liquid cooling plate pipe interface through a pipeline and a second device pipe interface communicated with the second liquid cooling plate pipe interface through a pipeline.
Furthermore, the electromagnetic steering device is connected with a plurality of liquid cooling plates which are arranged in series or in parallel through pipelines, the liquid cooling plates form a liquid cooling plate group, the first device pipe interface is communicated with the first liquid cooling plate pipe interface on one side of the liquid cooling plate group through a pipeline, and the second device pipe interface is communicated with the second liquid cooling plate pipe interface on the other side of the liquid cooling plate group through a pipeline.
Furthermore, a temperature sensor is arranged at each of the first device pipe interface and the second device pipe interface.
Furthermore, a pipe joint is fixed at the water inlet of the device and the water outlet of the device, a pipe joint is also fixed at the water inlet of the battery pack and the water outlet of the battery pack, a pipeline is connected between the pipe joint at the water inlet of the device and the pipe joint at the water inlet of the battery pack, and a pipeline is also connected between the pipe joint at the water outlet of the device and the pipe joint at the water outlet of the battery pack.
Furthermore, a pipe joint is fixed at the pipe joint of the first device and the pipe joint of the second device, a pipe joint is fixed at the pipe joint of the first liquid cooling plate, a pipe joint is fixed at the pipe joint of the second liquid cooling plate, a pipeline is connected between the pipe joint at the pipe joint of the first liquid cooling plate and the pipe joint at the pipe joint of the first device, and a pipeline is also connected between the pipe joint at the pipe joint of the second liquid cooling plate and the pipe joint at the pipe joint of the second device.
A battery pack thermal management system, comprising: it includes the aforesaid the controllable battery package of coolant liquid flow direction, battery package water inlet with there is the water supply installation that is used for to through the tube coupling between the battery package delivery port with the liquid cooling plate supplies water and be used for reducing the refrigerating plant of water supply temperature.
Furthermore, the thermal management system also comprises a PTC connected with the water outlet of the battery pack and capable of changing the resistance according to the water outlet temperature of the water outlet of the battery pack.
Further, the water supply device includes a water tank and a water pump.
A control method of a battery pack thermal management system is characterized in that: when the temperature difference of the single battery pack does not exceed the upper limit specified by an enterprise, the water supply device drives cooling liquid to enter a liquid cooling plate in the battery pack shell from a water inlet of the battery pack, the cooling liquid flows out from a water outlet of the battery pack after sequentially passing through a first liquid cooling plate pipe interface, a cooling liquid flow channel and a second liquid cooling plate pipe interface, and the cooling liquid is refrigerated by the refrigerating device and then is led into the water inlet of the battery pack again;
when the temperature difference of the single battery pack exceeds the upper limit specified by an enterprise, the steering device performs pipeline reversing action, the water supply device drives cooling liquid to enter a liquid cooling plate in the battery pack shell from a water inlet of the battery pack, the cooling liquid flows out from a water outlet of the battery pack after sequentially passing through a second liquid cooling plate pipe interface, a cooling liquid flow channel and a first liquid cooling plate pipe interface, and the cooling liquid is refrigerated by the refrigerating device and then is led into the water inlet of the battery pack again.
The invention has the beneficial effects that: when the temperature difference of the battery pack monomer exceeds the upper limit specified by an enterprise, the electromagnetic steering valve is started, the water inlet of the original liquid cooling plate is changed into the water outlet, the water outlet of the original liquid cooling plate is changed into the water inlet, the balance of the battery heat management system is guaranteed, the fixity of long-term existing temperature distribution is eliminated, the heat dissipation difference of the battery pack monomer is reduced, and the service life and the performance of the power battery are improved. For the water path outside the battery pack, the cooling/heating water path does not need to be changed, and the constant flow direction is kept in the cooling/heating process, namely, the water inlet and the water outlet of the battery pack are not alternately switched, so that the design of the water path outside the battery pack is simplified to a certain extent.
Drawings
FIG. 1 is a schematic diagram of a connection structure of a battery thermal management system according to the present invention;
FIG. 2 is a schematic view of the connection structure in the battery pack according to the present invention;
fig. 3 is a schematic diagram of cooling fluid flow within a battery pack according to the present invention;
FIG. 4 is a schematic view of the reverse flow of coolant in FIG. 3;
the system comprises a battery pack shell, a liquid cooling plate, a battery pack water outlet, a device water inlet, a device water outlet, a device pipe connector, a first device pipe connector, a second device pipe connector, a three-position four-way electromagnetic steering valve, a pipe connector, a first liquid cooling plate pipe connector, a second liquid cooling plate pipe connector, a refrigerating device, a PTC (positive temperature coefficient) device, a water tank, a water pump and a battery pack water inlet, wherein the battery pack shell is 1-battery pack shell, the liquid cooling plate is 2-liquid cooling plate, the battery pack water outlet is 3-.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
The controllable battery pack with the flow direction of the cooling liquid as shown in fig. 1-4 comprises a battery pack shell 1 and a liquid cooling plate 2 arranged in the battery pack shell 1, wherein a battery pack water inlet 16 and a battery pack water outlet 3 are arranged on the battery pack shell 1.
The battery pack shell 1 is also internally provided with a three-position four-way electromagnetic steering valve 8 which is communicated with the liquid cooling plate 2 through a pipeline and can change the flowing direction of cooling liquid in the liquid cooling plate 2, and the three-position four-way electromagnetic steering valve comprises a device water inlet 4 communicated with a battery pack water inlet 16 through a pipeline, a device water outlet 5 communicated with a battery pack water outlet 3 through a pipeline, a first device pipe connector 6 communicated with one side of the liquid cooling plate 2 close to the electromagnetic steering device through a pipeline, and a second device pipe connector 7 communicated with one side of the liquid cooling plate 2 far away from the electromagnetic steering device through a pipeline. A temperature sensor is arranged at each of the first device pipe interface 6 and the second device pipe interface 7. The three-position four-way electromagnetic steering valve 8 is connected with a plurality of liquid cooling plates 2 which are arranged in parallel through pipelines, the plurality of liquid cooling plates 2 are communicated through pipelines, the first device pipe connector 6 is communicated with the liquid cooling plate 2 which is closest to the electromagnetic steering device through a pipeline, and the second device pipe connector 7 is communicated with the liquid cooling plate 2 which is farthest away from the electromagnetic steering device through a pipeline.
The pipe joint 9 is fixed at the water inlet 4 and the water outlet 5 of the device, the pipe joint 9 is fixed at the water inlet 16 and the water outlet 3 of the battery pack, a pipeline is connected between the pipe joint 9 at the water inlet 4 of the device and the pipe joint 9 at the water inlet 16 of the battery pack, and a pipeline is connected between the pipe joint 9 at the water outlet 5 of the device and the pipe joint 9 at the water outlet 3 of the battery pack. The first device pipe interface 6 and the second device pipe interface 7 are both fixed with a pipe joint 9, one side of the liquid cooling plate 2 closest to the electromagnetic steering device, which is close to the first device pipe interface 6, is provided with a first liquid cooling plate pipe interface 10, the first liquid cooling plate pipe interface 10 is fixed with a pipe joint 9, one side of the liquid cooling plate 2 farthest from the electromagnetic steering device, which is far away from the second device pipe interface 7, is provided with a second liquid cooling plate pipe interface 11, the second liquid cooling plate pipe interface 11 is fixed with a pipe joint 9, a pipeline is connected between the pipe joint 9 at the first liquid cooling plate pipe interface 10 and the pipe joint 9 at the first device pipe interface 6, and a pipeline is also connected between the pipe joint 9 at the second liquid cooling plate pipe interface 11 and the pipe joint 9 at the second device pipe interface 7.
As shown in fig. 1, a thermal management system is designed based on the above-mentioned battery pack structure with controllable coolant flow direction, and comprises a PTC13 connected with the outlet 3 of the battery pack and capable of changing resistance according to the outlet temperature of the outlet 3 of the battery pack, the temperature of the coolant is judged according to the current change of the thermal management system and fed back to a vehicle controller, the vehicle controller controls a three-position four-way electromagnetic steering valve 8 to operate and steer, and a water tank 14 and a water pump 15 for supplying water to the liquid cooling plate 2 and a refrigerating device 12 for reducing the temperature of the supplied water are connected between the inlet 16 of the battery pack and the outlet 3 of the battery pack through pipelines.
In the invention, as shown in fig. 4, when the thermal management system works, the cooling liquid enters the device water inlet 4 of the three-position four-way electromagnetic steering valve 8 through the battery pack water inlet 16, then enters the first liquid cold plate pipe interface 10 through the first device pipe interface 6 via the water pipe and the pipe joint 9, flows back to the second device pipe interface 7 of the three-position four-way electromagnetic steering valve 8 through the second liquid cold plate pipe interface 11, the pipe joint 9 and the water pipe, and finally is connected to the pipeline of the whole vehicle through the device water outlet 5 and the battery pack water outlet 3.
As shown in fig. 3, when the temperature difference of the battery pack monomer exceeds the upper limit specified by the enterprise, the three-position four-way electromagnetic steering valve 8 starts to work, the flow direction of the thermal management system is changed, the original first liquid cooling plate pipe interface 10 is changed into a water outlet, and the original second liquid cooling plate pipe interface 11 is changed into a water inlet. At the moment, the balance of the battery thermal management system is guaranteed due to the change of the flow direction of the medium in the battery pack, the fixation of long-term temperature distribution is eliminated, the difference of single heat dissipation is reduced, and the service life and the performance of the power battery are improved.
The invention does not change the water inlet and the water outlet of the battery pack and has the following advantages: the position of the water pump 15 in the external pipeline is unchanged, the flow field distribution of the battery pack is not affected, the heat dissipation efficiency is not affected, and the cooling/heating requirements of the battery pack can be met. Consequently this patent proposal is through changing the inside coolant liquid flow direction of battery package, does not change the position of battery package inlet outlet, and then has solved the big problem of battery package unit temperature difference, has also effectively solved the unable coolant liquid flow direction that changes of traditional technique and has leaded to the higher problem of delivery port position temperature.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. A controllable battery pack of coolant flow direction, includes battery pack casing (1) and sets up liquid cooling board (2) in battery pack casing (1), its characterized in that: be provided with battery package water inlet (16) and battery package outlet (3) on battery package casing (1), liquid cold plate (2) are including first liquid cold plate pipe interface (10) and second liquid cold plate pipe interface (11) that are located its left and right sides, be provided with the coolant liquid runner between first liquid cold plate pipe interface (10) and second liquid cold plate pipe interface (11), still be provided with in battery package casing (1) with first liquid cold plate pipe interface (10) and second liquid cold plate pipe interface (11) are through the pipeline intercommunication, can change the coolant liquid and be in the device that turns to of flow direction in the coolant liquid runner, turn to the device include with battery package water inlet (16) through the device water inlet (4) of pipeline intercommunication and through the pipeline with device delivery port (5) of battery package outlet (3) intercommunication.
2. The coolant flow direction controllable battery pack according to claim 1, wherein: the steering device comprises an electromagnetic steering device, and the electromagnetic steering device comprises a first device pipe interface (6) communicated with the first liquid cooling plate pipe interface (10) through a pipeline and a second device pipe interface (7) communicated with the second liquid cooling plate pipe interface (11) through a pipeline.
3. The coolant flow direction controllable battery pack according to claim 2, wherein: the electromagnetic steering device is connected with a plurality of liquid cooling plates (2) which are arranged in series or in parallel through pipelines, the liquid cooling plates form a liquid cooling plate group, a first device pipe connector (6) is communicated with a first liquid cooling plate pipe connector (10) on one side of the liquid cooling plate group through a pipeline, and a second device pipe connector (7) is communicated with a second liquid cooling plate pipe connector (11) on the other side of the liquid cooling plate group through a pipeline.
4. The coolant flow direction controllable battery pack according to claim 3, wherein: and the first device pipe interface (6) and the second device pipe interface (7) are respectively provided with a temperature sensor.
5. The coolant flow direction controllable battery pack according to claim 1, wherein: the device water inlet (4) and the device water outlet (5) are both fixed with a pipe joint (9), the battery pack water inlet (16) and the battery pack water outlet (3) are both fixed with a pipe joint (9), a pipeline is connected between the pipe joint (9) at the device water inlet (4) and the pipe joint (9) at the battery pack water inlet (16), and a pipeline is connected between the pipe joint (9) at the device water outlet (5) and the pipe joint (9) at the battery pack water outlet (3).
6. The coolant flow direction controllable battery pack according to claim 3, wherein: the first device pipe interface (6) and the second device pipe interface (7) are both fixed with a pipe joint (9), the first liquid cooling plate pipe interface (10) is fixed with a pipe joint (9), the second liquid cooling plate pipe interface (11) is fixed with a pipe joint (9), the pipe joint (9) at the first liquid cooling plate pipe interface (10) and the pipe joint (9) at the first device pipe interface (6) are connected with a pipeline, and the pipe joint (9) at the second liquid cooling plate pipe interface (11) and the pipe joint (9) at the second device pipe interface (7) are also connected with a pipeline.
7. A battery pack thermal management system, comprising: the battery pack comprises a battery pack with a controllable flow direction of cooling liquid as claimed in any one of the claims 1-6, wherein a water supply device for supplying water to the liquid cooling plate (2) and a refrigerating device (12) for reducing the temperature of the supplied water are connected between a water inlet (16) of the battery pack and a water outlet (3) of the battery pack through pipelines.
8. The battery pack thermal management system of claim 7, wherein: the battery pack water outlet device also comprises a PTC (13) which is connected with the battery pack water outlet (3) and can change the resistance according to the water outlet temperature of the battery pack water outlet (3).
9. The battery pack thermal management system of claim 8, wherein: the water supply device comprises a water tank (14) and a water pump (15).
10. A control method of a battery pack thermal management system is characterized in that: the battery pack heat management system comprises the battery pack heat management system according to any one of claims 7 to 9, wherein when the temperature difference of the battery pack monomer does not exceed the enterprise specified upper limit, the water supply device drives cooling liquid to enter a liquid cooling plate (2) in a battery pack shell (1) from a battery pack water inlet (16), the cooling liquid sequentially passes through a first liquid cooling plate pipe interface (10), a cooling liquid flow channel and a second liquid cooling plate pipe interface (11) and then flows out from a battery pack water outlet (3), and the refrigerating device (12) refrigerates the cooling liquid and then guides the cooling liquid into the battery pack water inlet (16); when the temperature difference of the battery pack monomer exceeds the upper limit of enterprise regulations, the steering device performs pipeline reversing action, the water supply device drives cooling liquid to enter a liquid cooling plate (2) in the battery pack shell (1) through a battery pack water inlet (16), the cooling liquid flows out from a battery pack water outlet (3) after sequentially passing through a second liquid cooling plate pipe interface (11), a cooling liquid flow channel and a first liquid cooling plate pipe interface (10), and the refrigerating device (12) refrigerates the cooling liquid and then guides the cooling liquid into the battery pack water inlet (16) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011052607.6A CN112151912B (en) | 2020-09-29 | 2020-09-29 | Heat management system and control method for flowing of cooling liquid to controllable battery pack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011052607.6A CN112151912B (en) | 2020-09-29 | 2020-09-29 | Heat management system and control method for flowing of cooling liquid to controllable battery pack |
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| CN112151912A true CN112151912A (en) | 2020-12-29 |
| CN112151912B CN112151912B (en) | 2022-04-01 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112867372A (en) * | 2021-03-29 | 2021-05-28 | 安徽相成新能源科技有限公司 | New energy automobile business turn over liquid interface assembly |
| CN113314782A (en) * | 2021-05-24 | 2021-08-27 | Oppo广东移动通信有限公司 | Heat dissipation assembly, battery pack and robot |
| CN113907666A (en) * | 2021-08-31 | 2022-01-11 | 浙江亿力机电股份有限公司 | DC power supply steam mop |
| CN114927792A (en) * | 2022-05-12 | 2022-08-19 | 广汽埃安新能源汽车有限公司 | Cooling device, temperature difference adjusting method, power battery module and electric vehicle |
| DE102021126473A1 (en) | 2021-10-13 | 2023-04-13 | Audi Aktiengesellschaft | Firefighting device for a motor vehicle and method for operating a firefighting device |
| WO2024083144A1 (en) * | 2022-10-21 | 2024-04-25 | 湖北亿纬动力有限公司 | Liquid cooling device and battery pack |
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