CN219677352U - Battery shell with liquid cooling structure and battery module - Google Patents
Battery shell with liquid cooling structure and battery module Download PDFInfo
- Publication number
- CN219677352U CN219677352U CN202320471151.XU CN202320471151U CN219677352U CN 219677352 U CN219677352 U CN 219677352U CN 202320471151 U CN202320471151 U CN 202320471151U CN 219677352 U CN219677352 U CN 219677352U
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- shell
- wall
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- battery
- case
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- 239000007788 liquid Substances 0.000 title claims abstract description 82
- 238000001816 cooling Methods 0.000 title claims abstract description 36
- 239000000110 cooling liquid Substances 0.000 claims abstract description 59
- 230000017525 heat dissipation Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000002826 coolant Substances 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000011258 core-shell material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000005219 brazing Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
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Abstract
The utility model provides a battery shell with a liquid cooling structure, which comprises a shell and at least two battery cell shells, wherein the battery cell shells are arranged in the shell at intervals side by side, the upper end and the lower end of each battery cell shell are in sealing connection with the bottom wall and the top wall of the inner wall of the shell, a cooling liquid circulation channel is formed between the peripheral side of the inner wall of the shell and each battery cell shell arranged at intervals, after cooling liquid filled in the cooling liquid circulation channel, zhou Cejun of each battery cell shell is fully contacted with the cooling liquid, the contact area of the cooling liquid and the battery cell shells is improved, the higher heat dissipation efficiency is achieved, and meanwhile, the contact area of the cooling liquid of each battery cell shell is the same, so that each battery cell shell can uniformly dissipate heat, and the thermal runaway of each battery cell can be effectively controlled, and the service life of the battery cell is prolonged. The utility model provides a battery module comprising the battery shell with the liquid cooling structure.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery shell with a liquid cooling structure and a battery module.
Background
In recent years, in order to alleviate the effects of energy shortage and environmental pollution, batteries have received global attention as a main carrier for energy storage projects. The battery is used as a novel energy carrier, and the application of the battery is wider and wider, but a series of problems to be solved urgently are faced, such as the problems of service life attenuation, reliability, safety reduction and the like of the battery caused by heating of a battery core.
The temperature of the battery is controlled in a liquid cooling mode, wherein a main liquid cooling scheme is to arrange liquid cooling plates at the upper part and the lower part of a battery cell for integrated heat dissipation. The liquid cooling plates are typically joined by vacuum brazing or friction stir welding. The pipelines inside the liquid cooling plate are connected in series or in parallel, so that the liquid refrigerant flows inside to exchange heat with the battery cell and realize uniform temperature. Various methods are adopted in industry, such as a technology for 'lying' the battery core, a technology for increasing the contact area between the battery core and the liquid cooling plate through 'lying' arrangement, and a technology for designing the special-shaped liquid cooling plate, such as 'snake-shaped' liquid cooling plate for increasing the contact area between the battery core and the liquid cooling plate.
In the prior art, the contact area between the liquid cooling plate and the battery cell is usually only one surface or two surfaces, the cooling efficiency is low, the thermal runaway is easy to cause under extreme working conditions or extreme weather, the optimal use temperature of the battery can not be ensured during long-term use, and the temperature control effect is poor. The technology is mainly applied to the battery pack to control the cooling of the whole battery pack, and is insufficient for uniformly radiating each battery cell, and the attenuation degree of each battery cell is inconsistent due to the non-uniform temperature of the battery cell, so that the service life of the battery pack is shortened.
Disclosure of Invention
In view of the above, the present utility model provides a battery case with a liquid cooling structure, so as to solve the problems in the prior art that heat exchange by means of a cooling plate outside a battery pack results in low heat dissipation efficiency due to small contact area between the battery pack and the cooling plate, and each battery cell cannot dissipate heat uniformly due to inconsistent contact area between each battery cell and the cooling plate.
The utility model provides a battery case with liquid cooling structure, includes shell and two at least electric core shells, above-mentioned electric core shells interval side by side sets up in the shell, the upper end and the lower extreme of every electric core shell all with the diapire and the roof sealing connection of shell inner wall, form the coolant circulation passageway between every electric core shell that the inner wall week side of shell and mutual interval set up, coolant circulation passageway is filled with the coolant liquid that flows and makes Zhou Cejun of every electric core shell and coolant liquid fully contact reach and improve radiating efficiency and even heat dissipation.
Preferably, the number of the battery cell shells is at least three, and a first guide plate and a second guide plate are arranged between two adjacent battery cell shells; the first guide plate and the adjacent battery cell shells on the left side and the right side are arranged at intervals, the front end of the first guide plate is arranged on the inner wall of the front side wall of the shell, the rear end of the first guide plate is arranged at intervals with the inner wall of the rear side wall of the shell, the upper end of the first guide plate is connected with the inner wall of the upper side of the shell, and the lower end of the first guide plate is connected with the inner wall of the lower side of the shell; the second guide plate and the adjacent battery cell shells on the left side and the right side are arranged at intervals, the rear end of the second guide plate is arranged on the inner wall of the rear side wall of the shell, the front end of the second guide plate is arranged at intervals with the inner wall of the front side wall of the shell, the upper end of the second guide plate is connected with the inner wall of the upper side of the shell, and the lower end of the second guide plate is connected with the inner wall of the lower side of the shell; adjacent first guide plates and second guide plates are arranged in the shell in a staggered mode, a plurality of annular circulating channels are formed by the shell, each cell shell, the first guide plates and the second guide plates together, two adjacent annular circulating channels are communicated with each other, and a liquid outlet of the former annular circulating channel is communicated with a liquid inlet of the adjacent annular circulating channel.
Preferably, the shell is provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is arranged at the first cell shell on the left side and is communicated with the cooling liquid flow channel, the liquid outlet pipe is arranged at the first cell shell on the right side and is communicated with the cooling liquid flow channel.
Preferably, when the number of the cell housings is odd, the liquid inlet pipe and the liquid outlet pipe are arranged on the side walls of the opposite sides of the shell.
Preferably, when the number of the battery cell housings is even, the liquid inlet pipe and the liquid outlet pipe are arranged on the side wall of the same side of the shell, and the extending direction of the side wall of the same side of the shell is consistent with the extending direction of the plurality of battery cell housings.
Preferably, the number of the above-mentioned electric core shells is at least two, set up the third guide plate between two adjacent electric core shells, the equal interval setting of adjacent electric core shells of third guide plate and left and right sides, the front end setting of third guide plate is on the inner wall of shell front side wall, the inner wall interval setting of the rear end of third guide plate and shell rear side wall, the upper end and the shell upside inner wall connection of third guide plate, the lower extreme and the shell downside inner wall connection of third guide plate, by above-mentioned shell, every electric core shell, every third guide plate jointly form a plurality of U-shaped circulation channel, two adjacent U-shaped circulation channel intercommunication each other, the liquid outlet of preceding U-shaped circulation channel is linked together with the feed liquor mouth of the U-shaped circulation channel of next-door.
Preferably, the shell is provided with a cooling liquid inlet pipe and a cooling liquid outlet pipe, the cooling liquid inlet pipe and the cooling liquid outlet pipe are both arranged on the outer wall of the front side wall of the shell, the cooling liquid inlet pipe is arranged at the first cell shell on the left side, the cooling liquid inlet pipe is communicated with the cooling liquid flow channel, the cooling liquid outlet pipe is arranged at the first cell shell on the right side, and the cooling liquid outlet pipe is communicated with the cooling liquid flow channel.
The utility model also provides a battery module, which comprises the battery shell with the liquid cooling structure. The battery module is characterized in that the battery module comprises a battery module body, a battery cell shell, a cooling liquid and a heat-dissipation device, wherein the battery cell shell is arranged on the periphery of the battery cell shell, the cooling liquid is arranged on the periphery of the battery cell shell, and the cooling liquid is arranged on the periphery of the battery cell shell.
In the battery shell with the liquid cooling structure, after the cooling liquid is filled in the cooling liquid circulation channel, zhou Cejun of each battery cell shell is fully contacted with the cooling liquid, so that the contact area of the cooling liquid and the battery cell shell is increased, and higher heat dissipation efficiency is achieved.
Drawings
Fig. 1 is a perspective view of a battery case having a liquid-cooled structure.
Fig. 2 is a rear view of a battery case having a liquid-cooled structure.
Fig. 3 is a cross-sectional view at A-A in fig. 2.
Fig. 4 is a left side view of a battery case having a liquid-cooled structure.
Fig. 5 is a cross-sectional view at B-B in fig. 4.
Fig. 6 is a schematic view of the circulation flow of the cooling liquid in fig. 3.
Fig. 7 is a cross-sectional view of another embodiment of a battery housing having a liquid cooled configuration.
In the figure: the cooling device comprises a shell 10, a first guide plate 11, a second guide plate 12, a ring-shaped circulating channel 13, a liquid inlet pipe 14, a liquid outlet pipe 15, a third guide plate 16, a U-shaped circulating channel 17, a cooling liquid inlet pipe 18, a cooling liquid outlet pipe 19, a battery cell shell 20 and a cooling liquid circulating channel 30.
Detailed Description
The technical scheme and technical effects of the present utility model are further elaborated below in conjunction with the drawings of the present utility model.
Referring to fig. 3 or 7, the battery case with the liquid cooling structure includes a case 10 and at least two battery cell cases 20, the battery cell cases 20 are arranged in the case 10 at intervals side by side, the upper end and the lower end of each battery cell case 20 are connected with the bottom wall and the top wall of the inner wall of the case 10 in a sealing manner, a cooling liquid circulation channel 30 is formed between the peripheral side of the inner wall of the case 10 and each battery cell case 20 arranged at intervals, the cooling liquid circulation channel 30 is filled with flowing cooling liquid, so that the peripheral side of each battery cell case 20 is fully contacted with the cooling liquid, the heat dissipation efficiency of the battery cell is improved, and the heat runaway of each battery cell can be effectively controlled due to the fact that the contact area of each battery cell case 20 and the cooling liquid is the same, and the service life of the battery cell is prolonged.
Referring to fig. 1 to 5, in a first embodiment of the present utility model, further, the number of the cell housings 20 is at least three, and a first baffle 11 and a second baffle 12 are disposed between two adjacent cell housings 20; the first guide plates 11 are arranged at intervals with the adjacent cell shells 20 on the left side and the right side, the front ends of the first guide plates 11 are arranged on the inner wall of the front side wall of the shell 10, the rear ends of the first guide plates 11 are arranged at intervals with the inner wall of the rear side wall of the shell 10, the upper ends of the first guide plates 11 are connected with the inner wall of the upper side of the shell 10, and the lower ends of the first guide plates 11 are connected with the inner wall of the lower side of the shell 10; the second guide plates 12 are arranged at intervals with the adjacent cell shells 20 on the left side and the right side, the rear ends of the second guide plates 12 are arranged on the inner wall of the rear side wall of the shell 10, the front ends of the second guide plates 12 are arranged at intervals with the inner wall of the front side wall of the shell 10, the upper ends of the second guide plates 12 are connected with the inner wall of the upper side of the shell 10, and the lower ends of the second guide plates 12 are connected with the inner wall of the lower side of the shell 10; the adjacent first guide plates 11 and second guide plates 12 are arranged in the housing 10 in a staggered manner, a plurality of annular circulating channels 13 are formed by the housing 10, each cell shell 20, the first guide plates 11 and the second guide plates 12 together, the adjacent annular circulating channels 13 are communicated with each other, and the liquid outlet of the former annular circulating channel 13 is communicated with the liquid inlet of the immediately adjacent annular circulating channel 13. The annular circulating channels 13 encircle the periphery of each cell casing, and after entering from the entering end of each annular circulating channel 13, cooling liquid divides the side wall of the corresponding cell casing 20 into two paths to flow, and then takes away part of heat of the cell casing 20, so that the periphery of each cell casing 20 is fully contacted with the flowing cooling liquid, and the purpose of uniformly radiating each cell casing 20 is achieved while the radiating efficiency is improved.
Further, the casing 10 is provided with a liquid inlet pipe 14 and a liquid outlet pipe 15, the liquid inlet pipe 14 is arranged at the first cell shell 20 on the left side, the liquid inlet pipe 14 is communicated with the cooling liquid circulation channel 30, the liquid outlet pipe 15 is arranged at the first cell shell 20 on the right side, and the liquid outlet pipe 15 is communicated with the cooling liquid circulation channel 30.
Further, when the number of the cell housings 20 is odd, the liquid inlet pipe 14 and the liquid outlet pipe 15 are disposed on the side walls of the opposite sides of the housing 10. The drain pipe 15 is arranged on the opposite side shell 10 of the liquid inlet pipe 14, so that the cooling liquid flows out of the drain pipe 15 after flowing through the periphery side of the last cell shell 20, the circulation of the cooling liquid at the periphery side of the last cell shell 20 is better, and the purpose that the heat dissipation effect of the last cell shell 20 is the same as that of other cell shells 20 is achieved.
Further, when the number of the cell cases 20 is even, the liquid inlet pipe 14 and the liquid outlet pipe 15 are disposed on the side walls of the same side of the housing 10, and the extending direction of the side walls of the same side of the housing 10 is consistent with the extending direction of the plurality of cell cases 20 side by side, that is, the liquid inlet pipe 14 and the liquid outlet pipe 15 are disposed on the front side wall or the rear side wall shown in the drawings. The drain pipe 15 is arranged on the shell 10 on the same side of the liquid inlet pipe 14, so that the cooling liquid flows out of the drain pipe 15 after flowing through the periphery of the last cell shell 20, the circulation of the cooling liquid on the periphery of the last cell shell 20 is better, and the purpose that the cooling effect of the last cell shell 20 is the same as that of other cell shells 20 is achieved.
In use, referring to fig. 6, the cooling liquid enters the first annular circulation channel 13 on the left side from the liquid inlet pipe 14, flows along the opposite two directions along the peripheral side wall of the first cell housing 20 after hitting the side wall of the first cell housing 20, merges at the outlet of the first annular circulation channel 13 and flows into the second annular circulation channel 13, and flows along the opposite two directions along the peripheral side wall of the second cell housing 20 after hitting the side wall of the second cell housing 20, merges at the outlet of the second annular circulation channel 13 and flows into the third annular circulation channel 13, and flows out of the liquid outlet pipe 15 after sequentially flowing into the last annular circulation channel 13 for heat exchange cooling after the last cell housing, because the contact area of each cell housing 20 and the cooling liquid is the same so as to realize uniform cooling of each cell housing 20.
Referring to fig. 7, in a second embodiment of the present utility model, the number of the above-mentioned cell casings 20 is at least two, a third baffle 16 is disposed between two adjacent cell casings 20, the third baffle 16 and the adjacent cell casings 20 on the left and right sides are all disposed at intervals, the front end of the third baffle 16 is disposed on the inner wall of the front side wall of the housing 10, the rear end of the third baffle 16 is disposed at intervals on the inner wall of the rear side wall of the housing 10, the upper end of the third baffle 16 is connected to the inner wall of the upper side of the housing 10, the lower end of the third baffle 16 is connected to the inner wall of the lower side of the housing 10, a plurality of U-shaped circulation channels 17 are formed by the housing 10, each cell casing 20 and each third baffle 16, the adjacent two U-shaped circulation channels 17 are mutually communicated, and the liquid outlet of the previous U-shaped circulation channel 17 is communicated with the liquid inlet of the immediately adjacent U-shaped circulation channel 17. Further, a cooling liquid inlet pipe 18 and a cooling liquid outlet pipe 19 are arranged on the shell 10, the cooling liquid inlet pipe 18 and the cooling liquid outlet pipe 19 are arranged on the outer wall of the front side wall of the shell 10, the cooling liquid inlet pipe 18 is arranged at the first cell shell 20 on the left side, the cooling liquid inlet pipe 18 is communicated with the cooling liquid circulation channel 30, the cooling liquid outlet pipe 19 is arranged at the first cell shell 20 on the right side, and the cooling liquid outlet pipe 19 is communicated with the cooling liquid circulation channel 30.
The utility model also provides a battery module, which comprises the battery shell with the liquid cooling structure, and the battery core shell is internally provided. The battery module is characterized in that the battery module comprises a battery module body, a battery cell shell, a cooling liquid and a heat-dissipation device, wherein the battery cell shell is arranged on the periphery of the battery cell shell, the cooling liquid is arranged on the periphery of the battery cell shell, and the cooling liquid is arranged on the periphery of the battery cell shell.
Claims (8)
1. The utility model provides a battery case with liquid cooling structure, a serial communication port, including shell and two at least electric core casings, above-mentioned electric core casing interval side by side sets up in the shell, the upper end and the lower extreme of every electric core casing all with the diapire and the roof sealing connection of shell inner wall, form the coolant liquid circulation passageway between every electric core casing that the inner wall week side of shell and mutual interval set up, coolant liquid circulation passageway is filled with the coolant liquid of flow and makes the Zhou Cejun of every electric core casing and coolant liquid fully contact and reaches improvement radiating efficiency and even heat dissipation.
2. The battery case with liquid cooling structure as claimed in claim 1, wherein the number of the battery cases is at least three, and a first deflector and a second deflector are arranged between two adjacent battery cases; the first guide plate and the adjacent battery cell shells on the left side and the right side are arranged at intervals, the front end of the first guide plate is arranged on the inner wall of the front side wall of the shell, the rear end of the first guide plate is arranged at intervals with the inner wall of the rear side wall of the shell, the upper end of the first guide plate is connected with the inner wall of the upper side of the shell, and the lower end of the first guide plate is connected with the inner wall of the lower side of the shell; the second guide plate and the adjacent battery cell shells on the left side and the right side are arranged at intervals, the rear end of the second guide plate is arranged on the inner wall of the rear side wall of the shell, the front end of the second guide plate is arranged at intervals with the inner wall of the front side wall of the shell, the upper end of the second guide plate is connected with the inner wall of the upper side of the shell, and the lower end of the second guide plate is connected with the inner wall of the lower side of the shell; adjacent first guide plates and second guide plates are arranged in the shell in a staggered mode, a plurality of annular circulating channels are formed by the shell, each cell shell, the first guide plates and the second guide plates together, two adjacent annular circulating channels are communicated with each other, and a liquid outlet of the former annular circulating channel is communicated with a liquid inlet of the adjacent annular circulating channel.
3. The battery case with liquid cooling structure according to claim 2, wherein the liquid inlet pipe and the liquid outlet pipe are provided on the case, the liquid inlet pipe is provided at the first cell case on the left side, the liquid inlet pipe is communicated with the cooling liquid flow passage, the liquid outlet pipe is provided at the first cell case on the right side, and the liquid outlet pipe is communicated with the cooling liquid flow passage.
4. The battery case having a liquid-cooled structure according to claim 3, wherein the liquid inlet pipe and the liquid outlet pipe are provided on the side walls of the opposite sides of the case when the number of the cell cases is an odd number.
5. The battery case having a liquid cooling structure according to claim 3, wherein when the number of the battery cases is even, the liquid inlet pipe and the liquid outlet pipe are provided on the same side wall of the case, and the same side wall of the case has a direction in which the plurality of battery cases extend side by side.
6. The battery case with liquid cooling structure according to claim 1, wherein the number of the battery cases is at least two, a third guide plate is arranged between two adjacent battery cases, the third guide plate and the battery cases adjacent to the left side and the right side are all arranged at intervals, the front end of the third guide plate is arranged on the inner wall of the front side wall of the case, the rear end of the third guide plate is arranged at intervals on the inner wall of the rear side wall of the case, the upper end of the third guide plate is connected with the inner wall of the upper side of the case, the lower end of the third guide plate is connected with the inner wall of the lower side of the case, a plurality of U-shaped circulating channels are formed by the case, each battery case and each third guide plate, the two adjacent U-shaped circulating channels are mutually communicated, and the liquid outlet of the former U-shaped circulating channel is communicated with the liquid inlet of the adjacent U-shaped circulating channel.
7. The battery case having a liquid cooling structure according to claim 6, wherein a coolant inlet pipe and a coolant outlet pipe are provided on the case, the coolant inlet pipe and the coolant outlet pipe are both provided on an outer wall of a front side wall of the case, the coolant inlet pipe is provided at the first cell case on the left side, the coolant inlet pipe is communicated with the coolant flow passage, the coolant outlet pipe is provided at the first cell case on the right side, and the coolant outlet pipe is communicated with the coolant flow passage.
8. A battery module comprising the battery case having a liquid-cooled structure according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320471151.XU CN219677352U (en) | 2023-03-13 | 2023-03-13 | Battery shell with liquid cooling structure and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320471151.XU CN219677352U (en) | 2023-03-13 | 2023-03-13 | Battery shell with liquid cooling structure and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219677352U true CN219677352U (en) | 2023-09-12 |
Family
ID=87929010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320471151.XU Active CN219677352U (en) | 2023-03-13 | 2023-03-13 | Battery shell with liquid cooling structure and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219677352U (en) |
-
2023
- 2023-03-13 CN CN202320471151.XU patent/CN219677352U/en active Active
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