CN117613458A - Thermal management structure and method for battery cells of automobile - Google Patents
Thermal management structure and method for battery cells of automobile Download PDFInfo
- Publication number
- CN117613458A CN117613458A CN202311608417.1A CN202311608417A CN117613458A CN 117613458 A CN117613458 A CN 117613458A CN 202311608417 A CN202311608417 A CN 202311608417A CN 117613458 A CN117613458 A CN 117613458A
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- Prior art keywords
- liquid cooling
- battery cell
- cooling plate
- thermal management
- liquid
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 129
- 238000001816 cooling Methods 0.000 claims abstract description 87
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 239000000498 cooling water Substances 0.000 claims abstract description 28
- 239000012790 adhesive layer Substances 0.000 claims description 20
- 239000010410 layer Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000007726 management method Methods 0.000 description 18
- 230000002159 abnormal effect Effects 0.000 description 7
- 239000000110 cooling liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- 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
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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)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a thermal management structure and a method of an automobile battery cell, wherein the structure comprises the following steps: a liquid cooling plate and a PTC heating strip; the liquid cooling plate is paved at the bottom of the battery cell to regulate heat of the cell, a liquid cooling runner is arranged in the liquid cooling plate, the liquid cooling plate is provided with a liquid cooling water inlet and a liquid cooling water outlet, and the liquid cooling water inlet and the liquid cooling water outlet are respectively communicated with the liquid cooling runner; the PTC heating strip is arranged at the bottom of the liquid cooling plate to adjust the temperature of cold liquid in the cold liquid plate, and then the battery cells are subjected to uniform heat exchange. The invention can improve the heat exchange efficiency of the vehicle battery and the use safety of the battery.
Description
Technical Field
The invention relates to the technical field of heat pipe capacity of an automobile battery pack, in particular to a heat management structure and a heat management method of an automobile battery cell.
Background
With the wide application of power batteries in electric vehicles, besides energy density, the safety of the batteries also becomes an important factor affecting the application prospect of the power batteries. The power battery can emit a large amount of heat in the use process, so that the temperature of the battery is increased, thereby causing the working efficiency of the battery to be reduced, even causing accidents such as fire, explosion and the like, and seriously influencing the application and popularization of the power battery. In order to maintain the optimal operation state of the battery system and ensure the use safety thereof, it is necessary to provide an efficient heat dissipation system for the battery system. On the other hand, lithium cells in power cells store or release electricity through chemical reactions, and it is well known that temperature has a significant effect on chemical reactions, particularly when the cells are in a low temperature environment below 0 ℃, and the cells are not allowed to be charged. In order to meet the requirement of battery operation at low temperature, a safe, reliable and efficient battery heating device is needed. Therefore, how to efficiently carry out heat management on the battery cells of the automobile, and improve the heat exchange efficiency of the battery, has important significance.
Disclosure of Invention
The invention provides a thermal management structure and a thermal management method for an automobile battery cell, which solve the problem that the battery temperature of the existing electric automobile is abnormal due to low heat exchange efficiency of the battery, can improve the heat exchange efficiency of the automobile battery, and improve the use safety of the battery.
In order to achieve the above object, the present invention provides the following technical solutions:
a thermal management structure for an automotive battery cell, comprising: a liquid cooling plate and a PTC heating strip;
the liquid cooling plate is paved at the bottom of the battery cell to regulate heat of the cell, a liquid cooling runner is arranged in the liquid cooling plate, the liquid cooling plate is provided with a liquid cooling water inlet and a liquid cooling water outlet, and the liquid cooling water inlet and the liquid cooling water outlet are respectively communicated with the liquid cooling runner;
the PTC heating strip is arranged at the bottom of the liquid cooling plate to adjust the temperature of cold liquid in the cold liquid plate, and then the battery cells are subjected to uniform heat exchange.
Preferably, the liquid cooling runner adopts a bar-shaped structure, and a plurality of liquid cooling runners which are arranged in parallel are arranged in the liquid cooling plate.
Preferably, the PTC heating strips are disposed between the two liquid cooling channels, and at least one PTC heating strip corresponds to each cell below.
Preferably, the method further comprises: a first heat conducting structural adhesive layer;
the first heat conduction structural adhesive layer is arranged between the liquid cooling plate and the bottom of the battery cell so as to enhance heat transfer efficiency.
Preferably, the thickness of the first heat conduction structure adhesive layer is 1mm.
Preferably, the method further comprises: a second heat conducting structural adhesive layer;
and the second heat conduction structural adhesive layer is arranged between the PTC heating strip and the liquid cooling plate.
Preferably, the second heat conducting structural adhesive layer is 0.5mm.
Preferably, the method further comprises: a PTC controller;
the PTC controller is used for controlling the heating time and the heating temperature of the PTC according to the temperature of the battery cell and the temperature of the liquid cooling plate.
Preferably, the PTC heating strip is made of a resistance wire.
The invention also provides a thermal management method of the battery cell of the automobile, which comprises the following steps:
a liquid cooling plate is paved at the bottom of the battery cell to regulate heat of the cell, a liquid cooling runner is arranged in the liquid cooling plate, the liquid cooling plate is provided with a liquid cooling water inlet and a liquid cooling water outlet, and the liquid cooling water inlet and the liquid cooling water outlet are respectively communicated with the liquid cooling runner;
the PTC heating strip is arranged at the bottom of the liquid cooling plate to adjust the temperature of cold liquid in the cold liquid plate, so that the battery cells are subjected to uniform heat exchange;
a first heat conduction structural adhesive layer is arranged between the liquid cooling plate and the bottom of the battery cell, and a second heat conduction structural adhesive layer is arranged between the PTC heating strip and the liquid cooling plate.
The invention provides a thermal management structure and a thermal management method for an automobile battery cell, which are characterized in that a liquid cooling plate is arranged at the bottom of the battery cell for heat regulation, and a PTC heating strip is arranged at the bottom of the liquid cooling plate, so that the problem that the battery temperature of the existing electric automobile is abnormal due to low heat exchange efficiency of the battery is solved, the heat exchange efficiency of the battery of the automobile can be improved, and the use safety of the battery is improved.
Drawings
In order to more clearly illustrate the specific embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described.
Fig. 1 is a schematic diagram of a thermal management structure of an automotive battery cell according to the present invention.
Fig. 2 is a schematic diagram of a thermal management method of an automotive battery cell according to the present invention.
Detailed Description
In order to make the solution of the embodiment of the present invention better understood by those skilled in the art, the embodiment of the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
Aiming at the problem that the battery temperature of the current electric automobile is abnormal due to low heat exchange efficiency of the battery, the invention provides a thermal management structure and a thermal management method for an electric core of the battery of the automobile, which solve the problem that the battery temperature of the current electric automobile is abnormal due to low heat exchange efficiency of the battery of the electric automobile, can improve the heat exchange efficiency of the battery of the automobile and improve the use safety of the battery.
As shown in fig. 1, a thermal management structure of an automotive battery cell includes: a liquid cooling plate 2 and a PTC heating strip 3. The liquid cooling plate 2 is paved at the bottom of the battery cell 1 so as to regulate heat of the cell, a liquid cooling runner 21 is arranged in the liquid cooling plate 2, the liquid cooling plate 2 is provided with a liquid cooling water inlet and a liquid cooling water outlet, and the liquid cooling water inlet and the liquid cooling water outlet are respectively communicated with the liquid cooling runner 21. The PTC heating strip 3 is arranged at the bottom of the liquid cooling plate 2 to adjust the temperature of cold liquid in the cold liquid plate, and further perform uniform heat exchange on the battery cells.
In one embodiment, the length of the battery cell is 220mm, for example, if only the liquid cooling plate is used for heat regulation, the cooling liquid in the flow channel is not directly heated by the PTC in the circulation process, so that the temperature equalization is not facilitated, the battery cell is directly heated by the PTC, the heat extraction of the cooling liquid is reduced, and the PTC temperature is correspondingly higher. Therefore, the energy loss through the coolant is relatively small, and the energy loss through the PTC is relatively large. The PTC is arranged at the bottom of the liquid cooling plate, so that the temperature of cooling liquid in the liquid cooling plate can be adjusted, a certain temperature equalizing effect is achieved on the liquid cooling plate, the heat exchange efficiency of the battery cell is improved, and the abnormal temperature of the battery is reduced.
In practical application, the liquid cooling board can adopt aluminum plate material preparation, and the liquid cooling board adopts upper plate and hypoplastron to close and be in the same place the structure simultaneously, and the wall thickness of upper plate can adopt 1.5mm, and the wall thickness of hypoplastron can adopt 1.2mm, is equipped with runner structure simultaneously on the hypoplastron, makes the coolant fluid circulate in the liquid cooling board to improve the heat exchange efficiency to the electric core.
Further, the liquid cooling runner adopts the bar structure, be equipped with a plurality of parallel arrangement in the liquid cooling board the liquid cooling runner.
Further, the PTC heating strips are arranged between the two liquid cooling runners, and at least one PTC heating strip corresponds to the lower part of each electric core.
The structure further comprises: a first layer 4 of heat conducting structural adhesive; the first heat conduction structural adhesive layer 4 is arranged between the liquid cooling plate 2 and the bottom of the battery cell so as to enhance heat transfer efficiency.
Further, the thickness of the first heat conduction structure adhesive layer is 1mm.
The structure further comprises: a second heat conducting structural adhesive layer 5; the second heat conduction structural adhesive layer 5 is arranged between the PTC heating strip 3 and the liquid cooling plate 2.
Further, the second heat conduction structure glue layer is 0.5mm.
In practical application, the heat transfer path during PTC heating is placed below: PTC-high temperature resistant heat conduction structural adhesive-liquid cooling plate-heat conduction structural adhesive-battery cell.
Further, the structure further includes: a PTC controller;
the PTC controller is used for controlling the heating time and the heating temperature of the PTC according to the temperature of the battery cell and the temperature of the liquid cooling plate.
Further, the PTC heating strip is made of resistance wire.
Therefore, the invention provides a thermal management structure of an automobile battery cell, which is characterized in that a liquid cooling plate is arranged at the bottom of the battery cell for heat adjustment, and a PTC heating strip is arranged at the bottom of the liquid cooling plate, so that the problem that the battery temperature of the existing electric automobile is abnormal due to low heat exchange efficiency of the battery is solved, the heat exchange efficiency of the battery of the automobile can be improved, and the use safety of the battery is improved.
Correspondingly, as shown in fig. 2, the invention further provides a thermal management method of the battery cell of the automobile, which comprises the following steps:
s1: a liquid cooling plate is paved at the bottom of the battery cell to adjust heat of the battery cell, a liquid cooling runner is arranged in the liquid cooling plate, the liquid cooling plate is provided with a liquid cooling water inlet and a liquid cooling water outlet, and the liquid cooling water inlet and the liquid cooling water outlet are respectively communicated with the liquid cooling runner.
S2: the PTC heating strips are arranged at the bottom of the liquid cooling plate to adjust the temperature of cold liquid in the cold liquid plate, so that the battery cells are subjected to uniform heat exchange.
S3: a first heat conduction structural adhesive layer is arranged between the liquid cooling plate and the bottom of the battery cell, and a second heat conduction structural adhesive layer is arranged between the PTC heating strip and the liquid cooling plate.
Therefore, the invention provides a thermal management method for an automobile battery cell, which is characterized in that a liquid cooling plate is arranged at the bottom of the battery cell for heat adjustment, and a PTC heating strip is arranged at the bottom of the liquid cooling plate, so that the problem that the battery temperature of the existing electric automobile is abnormal due to low heat exchange efficiency of the battery is solved, the heat exchange efficiency of the automobile battery can be improved, and the use safety of the battery is improved.
While the construction, features and effects of the present invention have been described in detail with reference to the embodiments shown in the drawings, the above description is only a preferred embodiment of the present invention, but the present invention is not limited to the embodiments shown in the drawings, and all changes made according to the concepts of the present invention or modifications as equivalent embodiments are within the scope of the present invention without departing from the spirit covered by the specification and drawings.
Claims (10)
1. A thermal management structure for an automotive battery cell, comprising: a liquid cooling plate and a PTC heating strip;
the liquid cooling plate is paved at the bottom of the battery cell to regulate heat of the cell, a liquid cooling runner is arranged in the liquid cooling plate, the liquid cooling plate is provided with a liquid cooling water inlet and a liquid cooling water outlet, and the liquid cooling water inlet and the liquid cooling water outlet are respectively communicated with the liquid cooling runner;
the PTC heating strip is arranged at the bottom of the liquid cooling plate to adjust the temperature of cold liquid in the cold liquid plate, and then the battery cells are subjected to uniform heat exchange.
2. The thermal management structure of an automotive battery cell according to claim 1, wherein the liquid cooling flow channels are in a strip-shaped structure, and a plurality of liquid cooling flow channels arranged in parallel are arranged in the liquid cooling plate.
3. The thermal management structure of claim 2, wherein the PTC heating strips are disposed between two of the liquid cooling channels, at least one PTC heating strip being disposed under each cell.
4. The thermal management structure of an automotive battery cell of claim 3, further comprising: a first heat conducting structural adhesive layer;
the first heat conduction structural adhesive layer is arranged between the liquid cooling plate and the bottom of the battery cell so as to enhance heat transfer efficiency.
5. The thermal management structure of an automotive battery cell of claim 4, wherein the first layer of thermally conductive structure has a thickness of 1mm.
6. The thermal management structure of an automotive battery cell of claim 5, further comprising: a second heat conducting structural adhesive layer;
and the second heat conduction structural adhesive layer is arranged between the PTC heating strip and the liquid cooling plate.
7. The thermal management structure of an automotive battery cell of claim 6, wherein the second layer of thermally conductive structure is 0.5mm.
8. The thermal management structure of an automotive battery cell of claim 7, further comprising: a PTC controller;
the PTC controller is used for controlling the heating time and the heating temperature of the PTC according to the temperature of the battery cell and the temperature of the liquid cooling plate.
9. The thermal management structure of an automotive battery cell of claim 8, wherein the PTC heating strip is a resistance wire material.
10. A method of thermal management of an automotive battery cell, comprising:
a liquid cooling plate is paved at the bottom of the battery cell to regulate heat of the cell, a liquid cooling runner is arranged in the liquid cooling plate, the liquid cooling plate is provided with a liquid cooling water inlet and a liquid cooling water outlet, and the liquid cooling water inlet and the liquid cooling water outlet are respectively communicated with the liquid cooling runner;
the PTC heating strip is arranged at the bottom of the liquid cooling plate to adjust the temperature of cold liquid in the cold liquid plate, so that the battery cells are subjected to uniform heat exchange;
a first heat conduction structural adhesive layer is arranged between the liquid cooling plate and the bottom of the battery cell, and a second heat conduction structural adhesive layer is arranged between the PTC heating strip and the liquid cooling plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311608417.1A CN117613458A (en) | 2023-11-28 | 2023-11-28 | Thermal management structure and method for battery cells of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311608417.1A CN117613458A (en) | 2023-11-28 | 2023-11-28 | Thermal management structure and method for battery cells of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117613458A true CN117613458A (en) | 2024-02-27 |
Family
ID=89955763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311608417.1A Pending CN117613458A (en) | 2023-11-28 | 2023-11-28 | Thermal management structure and method for battery cells of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117613458A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450573A (en) * | 2016-11-16 | 2017-02-22 | 东莞市文轩五金制品有限公司 | Sealed flow channel liquid cooling plate for power battery and processing method of sealed flow channel liquid cooling plate |
| CN108054461A (en) * | 2017-12-01 | 2018-05-18 | 国联汽车动力电池研究院有限责任公司 | Flexible packaging power battery liquid cooling plate and battery modules |
| CN113437397A (en) * | 2021-06-26 | 2021-09-24 | 飞荣达科技(江苏)有限公司 | Liquid cooling plate with heating and temperature equalizing performances |
| CN113571796A (en) * | 2020-04-29 | 2021-10-29 | 比亚迪股份有限公司 | Temperature control assembly and battery pack |
| CN113690510A (en) * | 2021-08-26 | 2021-11-23 | 安徽江淮汽车集团股份有限公司 | Explosion-proof liquid cooling structure of cylinder battery module |
| CN215816040U (en) * | 2021-09-09 | 2022-02-11 | 湖北亿纬动力有限公司 | A liquid cooling battery module |
| CN216085039U (en) * | 2021-05-07 | 2022-03-18 | 恒大新能源技术(深圳)有限公司 | Liquid cooling board and battery package |
| CN115149155A (en) * | 2022-07-22 | 2022-10-04 | 岳阳耀宁新能源科技有限公司 | Battery liquid cooling plate system |
-
2023
- 2023-11-28 CN CN202311608417.1A patent/CN117613458A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450573A (en) * | 2016-11-16 | 2017-02-22 | 东莞市文轩五金制品有限公司 | Sealed flow channel liquid cooling plate for power battery and processing method of sealed flow channel liquid cooling plate |
| CN108054461A (en) * | 2017-12-01 | 2018-05-18 | 国联汽车动力电池研究院有限责任公司 | Flexible packaging power battery liquid cooling plate and battery modules |
| CN113571796A (en) * | 2020-04-29 | 2021-10-29 | 比亚迪股份有限公司 | Temperature control assembly and battery pack |
| CN216085039U (en) * | 2021-05-07 | 2022-03-18 | 恒大新能源技术(深圳)有限公司 | Liquid cooling board and battery package |
| CN113437397A (en) * | 2021-06-26 | 2021-09-24 | 飞荣达科技(江苏)有限公司 | Liquid cooling plate with heating and temperature equalizing performances |
| CN113690510A (en) * | 2021-08-26 | 2021-11-23 | 安徽江淮汽车集团股份有限公司 | Explosion-proof liquid cooling structure of cylinder battery module |
| CN215816040U (en) * | 2021-09-09 | 2022-02-11 | 湖北亿纬动力有限公司 | A liquid cooling battery module |
| CN115149155A (en) * | 2022-07-22 | 2022-10-04 | 岳阳耀宁新能源科技有限公司 | Battery liquid cooling plate system |
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