CN219832765U - Liquid cooling energy storage battery package - Google Patents
Liquid cooling energy storage battery package Download PDFInfo
- Publication number
- CN219832765U CN219832765U CN202223549535.3U CN202223549535U CN219832765U CN 219832765 U CN219832765 U CN 219832765U CN 202223549535 U CN202223549535 U CN 202223549535U CN 219832765 U CN219832765 U CN 219832765U
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- China
- Prior art keywords
- battery module
- plate
- liquid
- end plate
- liquid cooling
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- 238000001816 cooling Methods 0.000 title claims abstract description 51
- 239000007788 liquid Substances 0.000 title claims abstract description 46
- 238000004146 energy storage Methods 0.000 title claims abstract description 17
- 230000000452 restraining effect Effects 0.000 claims abstract description 9
- 239000000110 cooling liquid Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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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- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to a liquid cooling energy storage battery pack, which comprises an upper cover, a battery module, a liquid cooling plate for taking heat of the battery module away through cooling liquid, a front end plate for restraining the battery module, a bottom plate for supporting the weight of the battery module and a rear end plate for restraining the battery module, wherein the bottom plate is provided with a plurality of air inlets; the side surface of the battery module is provided with a temperature equalizing plate for taking out the heat of the battery to the side surface; the upper cover is arranged above the battery module; the two liquid cooling plates are respectively connected with the temperature equalizing plates at the two sides of the battery module; the front end plate is connected with the front end of the battery module; the bottom plate is arranged on the lower surface of the battery module; the rear end plate is connected with the rear end of the battery module; the upper cover, the liquid cooling plate, the front end plate, the bottom plate and the rear end plate are fixed into a frame body structure for wrapping the battery module. Compared with the prior art, the utility model has the advantages of effectively controlling the temperature difference, along with simple structure, low cost, good heat dissipation effect and the like.
Description
Technical Field
The utility model relates to a battery pack, in particular to a liquid cooling energy storage battery pack.
Background
With the development of new energy industry, lithium batteries become a main power source of automobiles. The battery pack is used as a basic unit for lithium battery application, and is mainly used for fixing and connecting the lithium battery. When the battery pack works, larger heat is often generated, if heat dissipation is not carried out, the battery pack is damaged, and safety risks are brought.
The existing battery pack cooling mainly comprises three types of natural heat dissipation, air cooling and liquid cooling, wherein the liquid cooling effect is best. The liquid cooling mode of current liquid cooling battery package is mostly mainly with bottom liquid cooling, and is great to square electric core in electric core direction of height (electric core post and electric core casing bottom) difference in temperature, along with the increase of height, like the common 280Ah in market (174X 74X204 width and thickness height), if continue to adopt the bottom liquid cooling mode, then top and bottom can have 7-10 ℃ difference in temperature, and the difference in temperature of monomer electric core top and bottom produces great influence to the life cycle and the security of electric core, and Pack (group battery) mainly comprises key spare parts such as module, liquid cooling system, box in the current market, and the structure is more complicated, and the cost is higher.
Therefore, research on the liquid cooling battery pack with simple structure, low cost and good cooling effect has great significance.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the liquid cooling energy storage battery pack.
The aim of the utility model can be achieved by the following technical scheme:
the liquid cooling energy storage battery pack is characterized by comprising an upper cover, a battery module, a liquid cooling plate for taking heat of the battery module away through cooling liquid, a front end plate for restraining the battery module, a bottom plate for supporting the weight of the battery module and a rear end plate for restraining the battery module; the side surface of the battery module is provided with a temperature equalizing plate for taking out the heat of the battery to the side surface; the upper cover is arranged above the battery module; the two liquid cooling plates are respectively connected with the temperature equalizing plates at the two sides of the battery module; the front end plate is connected with the front end of the battery module; the bottom plate is arranged on the lower surface of the battery module; the rear end plate is connected with the rear end of the battery module; the upper cover, the liquid cooling plate, the front end plate, the bottom plate and the rear end plate are fixed into a frame body structure for wrapping the battery module.
Further, a heat conducting structure for fully contacting and conducting heat is arranged between the liquid cooling plate and the temperature equalizing plate.
Further, the front end plate is provided with a front panel for mounting a high-voltage connector and a communication connector of the battery module; the front panel and the front end plate are connected in a sealing way through a sealing strip or sealant.
Further, a water inlet for cooling liquid to enter and a water outlet for cooling liquid to flow out are arranged on the liquid cooling plate.
Further, elastic elements for eliminating the length deviation of the battery module are arranged between the front end plate and the front end of the battery module and between the rear end plate and the rear end of the battery module.
Further, a sealing strip for sealing is arranged between the upper cover and the battery module; sealing strips for sealing are also arranged between the bottom plate and the battery module.
Further, the fixing modes of the upper cover, the liquid cooling plate, the front end plate, the bottom plate and the rear end plate comprise bolt fixing, riveting or welding.
Further, the battery module further comprises a plurality of battery cells which are combined together and a heat conduction pad which is used for fully contacting the battery cells with the temperature equalization plate; the heat conducting pad is adhered to the side surface of the battery cell and is connected with the temperature equalizing plate; the liquid cooling plate 4 is arranged on the side surface of the battery cell; the heat conduction pad is a heat conduction pad with a heat conduction coefficient of 0.5-3W/mK.
Further, the temperature equalizing plate is provided with micro channels inside and is filled with phase change working medium.
Further, the liquid cooling plate is made of a metal material with a heat conduction coefficient of 40-415W/mK; the bottom plate is made of metal materials.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the liquid cooling plate is arranged at the side of the battery module and is contacted with the temperature equalizing plate to take away the heat of the battery core, so that the temperature difference of the battery module can be controlled within 3-5 ℃ under the condition of continuous charge and discharge of high multiplying power 1C, and the cooling and heat dissipation effects are better.
2. According to the utility model, by arranging the temperature equalization plates with high heat transfer density, high heat conduction performance and Gao Junwen characteristics among the electric cores, the temperature difference of the electric cores in all directions is effectively balanced, so that the temperature difference between the upper and lower electric cores is reduced from 6-10 ℃ to within 2 ℃.
3. The structure of the battery pack is further simplified, the side liquid cooling plates are also used as the structural members of the box body, the end plates at the two sides are used as the structural members for controlling the expansion force of the battery module and are also used as the structural members of the box body, the structure is simpler and more integrated, the cost can be effectively reduced, and the space utilization rate of the battery pack is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a cell of the present utility model;
FIG. 3 is a schematic diagram of the finished product of the present utility model.
The reference numerals in the figures are:
1. upper cover, 2, battery module, 201, electric core, 202, heat conduction pad, 203, samming board, 3, heat conduction structure, 4, liquid cooling board, 5, front panel, 6, front end board, 7, bottom plate, 8, back end board, 9, elastic element.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.
Examples
As shown in fig. 1 to 3, a liquid-cooled energy storage battery pack comprises an upper cover 1, a battery module 2, a heat conducting structure 3, a liquid cooling plate 4, a front panel 5, a front end plate 6, a bottom plate 7, a rear end plate 8 and an elastic element 9; the battery module 2 comprises a plurality of combined battery cells 201, a heat conducting pad 202 and a temperature equalizing plate 203; the temperature equalizing plate 203 is arranged on the side surface of the battery module 2, is fully contacted with the side surface of the battery cell 201 through the heat conducting pad 202 and is used for taking out heat, so that the temperature difference of the battery cell 201 in all directions is effectively equalized; the temperature equalizing plate 203 is internally provided with micro-channels and is filled with phase change working medium, and has the characteristics of high heat transfer density, high heat conducting performance and Gao Junwen, and the heat transfer density can reach 600W/cm 2 ～1000W/cm 2 The heat conductivity coefficient can reach 4000-10000W/m.K, and the long-distance temperature difference can be controlled within 1 ℃; the heat conducting pad 202 is adhered to the side surface of the battery cell 201 and is connected with the temperature equalizing plate 203; the heat-conducting glue 202 is extruded through the liquid cooling plate 4 during assembly, so that the battery cell 201 is fully contacted with the temperature equalizing plate 203, and the thermal resistance is reduced; heat-conducting glue 202 toolThe battery module is provided with heat conduction performance, the heat conduction coefficient is 0.5-3W/mK, and the side heat of the battery cell 201 can be conducted to the temperature equalization plate 203 according to the charge-discharge multiplying power selection of the battery module 2.
The upper cover 1 is arranged above the battery module 2, and a sealing strip is arranged between the upper cover and the battery module for sealing; the two liquid cooling plates 4 are water cooling plates made of metal materials with the heat conductivity coefficient of 40-415W/mK, are arranged on two sides of the battery core 201, are respectively connected with the temperature equalizing plates 203 on two sides of the battery module 2, and are used for taking away heat of the battery module 2 through cooling liquid; the left and right liquid cooling plates 4 can determine whether the water flow direction is in a parallel connection or series connection mode according to the working condition of the system; a heat conducting structure 3 is arranged between the liquid cooling plate 4 and the temperature equalizing plate 203 and is used for fully contacting and conducting heat; the front end plate 6 is connected with the front end of the battery module 2 and used for restraining the battery module 2, and the front end plate 6 can be used for fixing a battery management system, copper bars, wire harnesses, fuses and the like through structural design; the bottom plate 7 is placed on the lower surface of the battery module 2 and sealed by a sealing strip, and the bottom plate 7 can be a metal bottom plate or a liquid cooling bottom plate and is used for supporting the weight of the battery module 2; the rear end plate 8 is connected with the rear end of the battery module 2 and is used for restraining the battery module 2; the front panel 5 is arranged on the front end plate 6 and is used for mounting a high-voltage connector and a communication connector of the battery module 2; the front panel 5 and the front end plate 6 are connected in a sealing way through sealing strips or sealing glue, so that the battery pack is ensured to meet the IP67 requirement; elastic elements 9 are arranged between the front end plate 6 and the front end of the battery module 2 and between the rear end plate 8 and the rear end of the battery module 2, and are used for absorbing the length deviation of the battery module 2 caused by single tolerance of the battery cell 201, ensuring the assembly of the liquid cooling plate 4 and the front end plate 6 and the rear end plate 8, simultaneously playing a role of heat insulation, and avoiding the further increase of temperature difference in a battery pack caused by heat dissipation of the end plates at two ends of the battery module 2. The upper cover 1, the liquid cooling plate 4, the front end plate 6, the bottom plate 7 and the rear end plate 8 are fixed into a frame structure for wrapping the battery module 2 in a bolt, riveting or welding mode, are contacted with the battery module 2, are used for bearing the expansion force of the battery cell 201 at the end of the cycle, and are used for restraining the battery module 2, so that the battery cell 201 is prevented from falling off due to the overlarge weight of the battery cell 201; and the connection parts of the frame body structure are provided with sealant, so that the battery pack is ensured to meet the IP67 requirement.
When the battery pack is assembled, firstly, the battery cells 201 and the temperature equalization plates 203 are stacked according to the serial-parallel quantity of the system through the heat conducting glue 202; after stacking, placing elastic elements 9 at two ends of the battery module 2, respectively placing a front end plate 6 and a rear end plate 8 at two ends of the battery module 2, and extruding to a required size by an extruder; the heat conduction structure 3 and the liquid cooling plate 4 are arranged on two sides of the battery module 2, the bottom plate 7 is arranged on the lower surface of the battery module, and the bottom plate 7 and the bottom of the battery cell 201 can be bonded by adopting structural adhesive or heat conduction structural adhesive, so that the rigidity is further improved; finally, placing an upper cover 1 on the upper surface of the battery module 2; the upper cover 1, the liquid cooling plate 4, the front end plate 6, the bottom plate 7 and the rear end plate 8 are fixed through bolts, riveting or welding, and the battery pack assembly is completed.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. The liquid cooling energy storage battery pack is characterized by comprising an upper cover (1), a battery module (2), a liquid cooling plate (4) for taking heat of the battery module (2) away through cooling liquid, a front end plate (6) for restraining the battery module (2), a bottom plate (7) for supporting the weight of the battery module (2) and a rear end plate (8) for restraining the battery module (2); the side surface of the battery module (2) is provided with a temperature equalizing plate (203) which brings out the heat of the battery to the side surface; the upper cover (1) is arranged above the battery module (2); the two liquid cooling plates (4) are respectively connected with the temperature equalizing plates (203) at the two sides of the battery module (2); the front end plate (6) is connected with the front end of the battery module (2); the bottom plate (7) is arranged on the lower surface of the battery module (2); the rear end plate (8) is connected with the rear end of the battery module (2); the upper cover (1), the liquid cooling plate (4), the front end plate (6), the bottom plate (7) and the rear end plate (8) are fixed into a frame structure for wrapping the battery module (2).
2. The liquid-cooled energy storage battery pack according to claim 1, wherein a heat conducting structure (3) for fully contacting and conducting heat is arranged between the liquid cooling plate (4) and the temperature equalizing plate (203).
3. The liquid-cooled energy storage battery pack according to claim 1, wherein the front end plate (6) is provided with a front panel (5) for mounting a high-voltage connector and a communication connector of the battery module (2); the front panel (5) and the front end plate (6) are connected in a sealing way through sealing strips or sealing glue.
4. The liquid-cooled energy storage battery pack according to claim 1, wherein the liquid cooling plate (4) is provided with a water inlet for entering cooling liquid and a water outlet for exiting cooling liquid.
5. The liquid-cooled energy storage battery pack according to claim 1, wherein elastic elements (9) for eliminating the length deviation of the battery module (2) are arranged between the front end plate (6) and the front end of the battery module (2) and between the rear end plate (8) and the rear end of the battery module (2).
6. The liquid-cooled energy storage battery pack according to claim 1, wherein a sealing strip for sealing is arranged between the upper cover (1) and the battery module (2); sealing strips for sealing are also arranged between the bottom plate (7) and the battery module (2).
7. The liquid-cooled energy storage battery pack according to claim 1, wherein the fixing means of the upper cover (1), the liquid cooling plate (4), the front end plate (6), the bottom plate (7) and the rear end plate (8) comprise bolting, riveting or welding.
8. The liquid-cooled energy storage battery pack according to claim 1, wherein the battery module (2) further comprises a plurality of combined electric cells (201) and a heat conducting pad (202) for fully contacting the electric cells (201) with the temperature equalizing plate (203); the heat conducting pad (202) is adhered to the side surface of the battery cell (201) and is connected with the temperature equalizing plate (203); the liquid cooling plate 4 is arranged on the side face of the battery cell (201); the heat conduction pad (202) is a heat conduction pad with a heat conduction coefficient of 0.5-3W/mK.
9. The liquid-cooled energy storage battery pack according to claim 1, wherein the temperature equalization plate (203) is a temperature equalization plate with micro channels inside and filled with phase change working medium.
10. The liquid-cooled energy storage battery pack according to claim 1, wherein the liquid-cooled plate (4) is a water-cooled plate made of a metal material with a heat conductivity coefficient of 40-415W/mK; the bottom plate (7) is made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223549535.3U CN219832765U (en) | 2022-12-29 | 2022-12-29 | Liquid cooling energy storage battery package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223549535.3U CN219832765U (en) | 2022-12-29 | 2022-12-29 | Liquid cooling energy storage battery package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219832765U true CN219832765U (en) | 2023-10-13 |
Family
ID=88251487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223549535.3U Active CN219832765U (en) | 2022-12-29 | 2022-12-29 | Liquid cooling energy storage battery package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219832765U (en) |
-
2022
- 2022-12-29 CN CN202223549535.3U patent/CN219832765U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |