CN219419164U - Immersed cooling battery module and battery pack - Google Patents
Immersed cooling battery module and battery pack Download PDFInfo
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- CN219419164U CN219419164U CN202223448698.2U CN202223448698U CN219419164U CN 219419164 U CN219419164 U CN 219419164U CN 202223448698 U CN202223448698 U CN 202223448698U CN 219419164 U CN219419164 U CN 219419164U
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- cooling
- battery module
- battery cell
- bottom wall
- battery
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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 submerged cooling battery module and a battery pack, wherein the battery module comprises: the battery cell stacking body comprises a plurality of battery cells stacked along the thickness direction, wherein each battery cell comprises a body and a tab extending from the body; the battery cell stacking body is accommodated in the shell, the shell comprises a top wall, a bottom wall, a group of side walls which are oppositely arranged and a group of end plates which are oppositely arranged, the body of the battery cell is perpendicular to the bottom wall, the end plates are oppositely arranged with the lugs, a turbulent flow structure is arranged on the inner surface of the top wall, a first cooling flow channel is arranged in the bottom wall, and insulating cooling liquid is filled in a gap between the battery cell stacking body and the shell. According to the utility model, cooling oil flows through the flow channel at the bottom of the shell and the top of the battery cell, so that the effects of double-sided cooling of the battery cell and cooling of the electrode lugs are achieved, the heat exchange effect is superior to that of a double-sided cold plate, the temperature of the electrode lugs and the battery cell during high-rate quick charging is effectively reduced, the safety of the battery cell is improved, the service life of the battery cell is prolonged, and the heat exchange coefficient of the cooling liquid and the battery cell is effectively improved.
Description
Technical Field
The utility model belongs to the technical field of battery packs, and particularly relates to an immersed cooling battery module and a battery pack.
Background
The battery module is generally arranged in a power battery pack on the market at present, and a cooling mechanism for cooling the battery module is generally arranged at the bottom of the whole battery module, and a bottom liquid cooling plate is generally arranged at the bottom of the whole battery module so as to radiate a battery core in the battery module, and the problems of higher thermal resistance between the battery core and cooling liquid and heavier weight and lower grouping efficiency exist under the condition of radiating by the traditional liquid cooling plate. The battery module is used as a main component in a battery pack of a new energy automobile, and provides the functions of energy output and storage. The battery module comprises a plurality of battery cells, bus bars and a sampling wire harness, wherein the battery cells are sequentially arranged, the bus bars are connected with the lugs of two adjacent battery cells, but the cooling structure of the lugs of the battery cells is generally not direct to the existing cooling structure, when the battery cells are rapidly charged at a high rate, the temperature rise of the electric connection parts such as the lugs of the battery cells is higher, the bottom liquid cooling cannot be timely cooled, and the problem that the temperature of the electric connection parts such as the lugs is too high is easily caused.
Disclosure of Invention
In view of the above drawbacks of the prior art, the present utility model aims to provide a submerged cooling battery module and a battery pack, so as to solve the problems of high thermal resistance between a battery cell and a cooling liquid under the heat dissipation condition of a traditional liquid cooling plate, heavy weight and low grouping efficiency, and the problem that an existing cooling structure generally does not directly cool the tab of the battery cell, when high-rate quick charging is performed, the temperature rise of an electrical connection part such as the tab of the battery cell is high, the bottom liquid cooling cannot be performed in time, and the problem that the temperature of the electrical connection part such as the tab is too high is easily caused.
To achieve the above and other related objects, the present utility model provides an immersion cooling battery module, comprising:
a cell stack including a plurality of cells stacked in a thickness direction, the cells including a body and tabs extending from the body;
the battery cell stack body is accommodated in the shell, the shell comprises a top wall, a bottom wall, a group of side walls which are oppositely arranged and a group of end plates which are oppositely arranged, the body of the battery cell is mutually perpendicular to the bottom wall, the end plates are oppositely arranged with the electrode lugs, wherein the inner surface of the top wall is provided with a turbulence structure, a first cooling flow channel is arranged in the bottom wall,
and the insulating cooling liquid is filled in the gap between the cell stack body and the shell.
In one embodiment of the present utility model, the turbulence structure includes a turbulence table protruding from an inner surface of the top wall and contacting a top surface of the cell stack.
In one embodiment of the utility model, the spoiler comprises a plurality of strip-shaped protrusions, and the strip-shaped protrusions are staggered on the inner surface of the top wall.
In one embodiment of the present utility model, the top wall, the bottom wall, the side wall and the end plate are sequentially and fixedly connected to form a closed accommodating cavity, and the cell stack is installed in the accommodating cavity.
In one embodiment of the present utility model, two ends of the bottom plate of the bottom wall protrude from two ends of the upper plate of the bottom wall, and two ends of the first cooling flow channel are communicated with the accommodating cavity.
In one embodiment of the present utility model, both ends of the bottom plate of the bottom wall are flush with both ends of the upper plate of the bottom wall and are connected to the end plate so that the receiving chamber and the first cooling flow passage are independent from each other.
In one embodiment of the utility model, the device further comprises a liquid inlet and a liquid outlet, wherein the liquid inlet and the liquid outlet are arranged on the end plate or the top wall.
In one embodiment of the utility model, a second cooling flow passage is also included, the second cooling flow passage being disposed within the sidewall.
In one embodiment of the utility model, a thermally conductive glue is further included, the thermally conductive glue being disposed between the bottom surface of the cell stack and the bottom wall.
The utility model also provides a battery pack comprising a box body and the submerged cooling battery module according to any one of the above embodiments, wherein the battery module is installed in the box body.
The utility model provides a submerged cooling battery module and a battery pack, wherein a turbulent flow structure is arranged on the inner surface of the top wall of a shell, namely, cooling liquid is in direct contact with a battery core for heat exchange at the top of the battery core, and the top wall of the shell forms a staggered turbulent flow structure by using processes such as stamping and the like so as to strengthen heat exchange.
The utility model provides a submerged cooling battery module and a battery pack, wherein the flow rate of cooling liquid of a cooling flow channel in the middle of a shell is larger than that of cooling flow channels in two sides of the shell, so that the temperature uniformity of the whole battery cell is improved.
The utility model provides an immersed cooling battery module and a battery pack, wherein a cooling flow channel is arranged at the bottom of a shell, insulating cooling liquid is filled between the shell and a battery core stacking body so as to submerge the battery core stacking body, the cooling liquid flows through the flow channel at the bottom of the shell and the top of the battery core and takes away heat, the effects of cooling the two sides of the battery core and cooling lugs are achieved, the heat exchange effect is superior to that of a double-sided cold plate, the temperatures of the lugs and the battery core during high-rate quick charging are effectively reduced, the safety and the service life of the battery core are improved, and meanwhile, compared with a traditional liquid cooling plate, the scheme can save weight and space and effectively improve the heat exchange coefficient of the cooling liquid and the battery core.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view illustrating a structure of a battery module according to an embodiment of the utility model.
Fig. 2 is a schematic view illustrating an exploded structure of a battery module according to an embodiment of the present utility model.
Fig. 3 is a schematic view illustrating a structure of a top wall of a battery module according to an embodiment of the utility model.
Fig. 4 is a side view of a top wall of a battery module according to an embodiment of the present utility model.
Fig. 5 is a schematic view illustrating a structure of a first cooling flow channel in a battery module according to an embodiment of the utility model.
Description of the reference numerals:
a battery module 10; a cell stack 11; a housing 12; a cell 111; a body 1111; a tab 1112; a top wall 121; a bottom wall 122; a sidewall 123; an end plate 124; a heat conductive adhesive 1201; a spoiler 1211; a first cooling flow passage 1221; a bottom plate 1222; an upper plate 1223; a liquid inlet 13; a liquid outlet 14.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.
It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
Referring to fig. 1 to 4, the utility model provides a submerged cooling battery module and a battery pack, so as to solve the problems of higher thermal resistance between a battery cell and a cooling liquid under the heat dissipation condition of a traditional liquid cooling plate, heavier weight and lower grouping efficiency, and a cooling structure which is generally not directly used for cooling battery cell tabs for the existing cooling structure.
Referring to fig. 1 and 2, in the present embodiment, the cell stack 11 includes a plurality of cells 111, the plurality of cells 111 are stacked together along a thickness direction, the cells 111 include a body 1111 and tabs 1112, the tabs 1112 extend outwards from the body 1111, and specifically, the tabs 1112 are disposed at two ends of the body 1111. In this embodiment, the housing 12 includes a top wall 121, a bottom wall 122, a side wall 123 and an end plate 124, a set of side walls 123 are disposed on two opposite sides of the bottom wall 122, a set of end plates 124 are disposed on the other two sides, the top wall 121, the bottom wall 122, the side walls 123 and the end plates 124 are sequentially and fixedly connected to form a sealed accommodating cavity, the cell stack 11 is accommodated in the accommodating cavity, and the body 1111 of the cell 111 is perpendicular to the bottom wall 122, the end plates 124 are disposed opposite to the tabs 1112, that is, the body 1111 of the cell 111 on two sides of the cell stack 11 along the stacking direction contacts with the side walls 123, and the tabs 1112 of the cell 111 in the cell stack 11 are close to the end plates 124.
Referring to fig. 1, 2, 3 and 4, in this embodiment, an insulating cooling liquid is filled between the housing 12 and the cell stack 11, specifically, a turbulence structure 1211 is disposed on an inner surface of the top wall 121, specifically, the turbulence structure 1211 includes a turbulence table, and the turbulence table protrudes from the inner surface of the top wall 121 and contacts with the top surface of the cell stack 11, that is, a certain gap exists between the top surface of the cell stack 11 and the top wall 121, when the insulating cooling liquid passes through the gap, due to the existence of the turbulence structure 1211, a heat exchange coefficient between the cooling liquid and the cell stack 11 can be enhanced, so as to improve a cooling effect thereof. In this embodiment, the turbulence table includes a plurality of strip-shaped protrusions, and the strip-shaped protrusions are staggered on the inner surface of the top wall 121, that is, the cooling liquid directly contacts the battery cells 111 at the top of the battery cell stack 11 for heat exchange, and the top wall 121 of the housing 12 forms a staggered turbulence structure 1211 by using a stamping process or the like to enhance heat exchange.
Referring to fig. 1, 2 and 5, in the present embodiment, a first cooling flow passage 1221 is provided at the bottom of the housing 12, specifically, a first cooling flow passage 1221 is provided in the bottom wall 122 to further realize the cooling effect on the cell stack 11. Specifically, the bottom wall 122 includes a bottom plate 1222 and an upper plate 1223, the upper plate 1223 is installed above the bottom plate 1222 to form the first cooling flow passage 1221 with the bottom plate 1222, where the first cooling flow passage 1221 may be communicated with the accommodating cavity in the housing 12, or may be independent from the accommodating cavity. In this embodiment, a heat-conducting glue 1201 is disposed between the bottom surface of the cell stack 11 and the bottom wall 122 of the housing 12 to improve the heat conduction performance thereof, thereby improving the cooling effect of the first cooling flow passage 1221 in the bottom wall 122 on the cell 111.
Referring to fig. 1, 2 and 5, in the present embodiment, when the first cooling flow passage 1221 is communicated with the accommodating cavity in the housing 12, two ends of the bottom plate 1222 of the bottom wall 122 protrude from two ends of the upper plate 1223 of the bottom wall 122, so that two ends of the first cooling flow passage 1221 are communicated with the accommodating cavity, at this time, the accommodating cavity and the first cooling flow passage 1221 may share one liquid inlet 13 and one liquid outlet 14, and the cooling liquids filled in the first cooling flow passage 1221 and the accommodating cavity are all insulating cooling liquids. It should be noted that the liquid inlet 13 and the liquid outlet 14 may be disposed on the end plate 124 or the top wall 121, for example, the liquid inlet 13 and the liquid outlet 14 may be disposed on the end plates 124 on two sides of the housing 12, or may be disposed on the same end plate 124.
Referring to fig. 1, 2 and 5, in the present embodiment, when the first cooling flow passage 1221 and the accommodating cavity in the housing 12 are independent of each other, two ends of the bottom plate 1222 of the bottom wall 122 are flush with two ends of the upper plate 1223 of the bottom wall 122 and are connected to the end plate 124, so that the accommodating cavity and the first cooling flow passage 1221 are independent of each other, at this time, a liquid inlet 13 and a liquid outlet 14 are respectively provided in the accommodating cavity and the first cooling flow passage 1221, so that the insulating cooling liquid is filled into the accommodating cavity alone to submerge the cell stack 11, and the cooling liquid is filled into the first cooling flow passage 1221 alone. When the first cooling flow passage 1221 and the housing cavity in the housing 12 are independent of each other, the cooling liquid filled in the first cooling flow passage 1221 may be a common cooling liquid, so as to reduce the cost.
Referring to fig. 1, in some other embodiments, a second cooling channel is further disposed in the housing 12, and the second cooling channel is disposed in the side wall 123 to further enhance the cooling effect. It should be noted that, the cooling fluid flow rate of the cooling channels in the middle of the housing 12 is greater than the cooling fluid flow rate of the cooling channels in the two sides of the housing 12, so as to improve the temperature uniformity of the whole battery cell. The second cooling flow path may be communicated with the housing chamber in the housing 12, or may be independent of the housing chamber.
The utility model provides a submerged cooling battery module and a battery pack, wherein a turbulent flow structure is arranged on the inner surface of the top wall of a shell, namely, cooling liquid is in direct contact with a battery core for heat exchange at the top of the battery core, and the top wall of the shell forms a staggered turbulent flow structure by using processes such as stamping and the like so as to strengthen heat exchange.
The utility model provides a submerged cooling battery module and a battery pack, wherein the flow rate of cooling liquid of a cooling flow channel in the middle of a shell is larger than that of cooling flow channels in two sides of the shell, so that the temperature uniformity of the whole battery cell is improved.
The utility model provides an immersed cooling battery module and a battery pack, wherein a cooling flow channel is arranged at the bottom of a shell, insulating cooling liquid is filled between the shell and a battery core stacking body so as to submerge the battery core stacking body, the cooling liquid flows through the flow channel at the bottom of the shell and the top of the battery core and takes away heat, the effects of cooling the two sides of the battery core and cooling lugs are achieved, the heat exchange effect is superior to that of a double-sided cold plate, the temperatures of the lugs and the battery core during high-rate quick charging are effectively reduced, the safety and the service life of the battery core are improved, and meanwhile, compared with a traditional liquid cooling plate, the scheme can save weight and space and effectively improve the heat exchange coefficient of the cooling liquid and the battery core.
The foregoing description is only illustrative of the preferred embodiments of the present application and the technical principles employed, and it should be understood by those skilled in the art that the scope of the present application is not limited to the specific combination of the above technical features, but encompasses other technical features which may be combined with any combination of the above technical features or their equivalents without departing from the inventive concept, such as the technical features disclosed in the present application (but not limited to) and the technical features having similar functions are substituted for each other.
Other technical features besides those described in the specification are known to those skilled in the art, and are not described herein in detail to highlight the innovative features of the present utility model.
Claims (10)
1. An immersion-cooled battery module, comprising:
a cell stack including a plurality of cells stacked in a thickness direction, the cells including a body and tabs extending from the body;
the battery cell stack body is accommodated in the shell, the shell comprises a top wall, a bottom wall, a group of side walls which are oppositely arranged and a group of end plates which are oppositely arranged, the body of the battery cell is mutually perpendicular to the bottom wall, the end plates are oppositely arranged with the electrode lugs, wherein the inner surface of the top wall is provided with a turbulence structure, a first cooling flow channel is arranged in the bottom wall,
and the insulating cooling liquid is filled in the gap between the cell stack body and the shell.
2. The submerged cooling battery module of claim 1, wherein the turbulence structures comprise turbulence bars that protrude from the inner surface of the top wall and contact the top surface of the cell stack.
3. The submerged cooling battery module of claim 2, wherein the spoiler comprises a plurality of strip-shaped protrusions, and wherein the plurality of strip-shaped protrusions are staggered on the inner surface of the top wall.
4. The submerged cooling battery module of claim 1, wherein the top wall, the bottom wall, the side walls, and the end plates are fixedly connected in order to form a closed receiving cavity, and the cell stack is mounted in the receiving cavity.
5. The submerged cooling battery module of claim 4, wherein the bottom plate of the bottom wall has both ends protruding beyond both ends of the upper plate of the bottom wall, and both ends of the first cooling flow channel communicate with the receiving chamber.
6. The submerged cooling battery module of claim 4, wherein the bottom plate of the bottom wall has both ends flush with both ends of the upper plate of the bottom wall and both are connected to the end plate such that the receiving chamber and the first cooling flow channel are independent of each other.
7. The immersion-cooled battery module according to claim 1, further comprising a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet being provided on the end plate or on the top wall.
8. The immersion-cooled battery module according to claim 1, further comprising a second cooling flow channel disposed within the side wall.
9. The immersion-cooled battery module of claim 1, further comprising a thermally conductive paste disposed between the bottom surface of the cell stack and the bottom wall.
10. A battery pack comprising a case and the immersion-cooled battery module according to any one of claims 1 to 9, the battery module being mounted in the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223448698.2U CN219419164U (en) | 2022-12-22 | 2022-12-22 | Immersed cooling battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223448698.2U CN219419164U (en) | 2022-12-22 | 2022-12-22 | Immersed cooling battery module and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219419164U true CN219419164U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223448698.2U Active CN219419164U (en) | 2022-12-22 | 2022-12-22 | Immersed cooling battery module and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219419164U (en) |
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2022
- 2022-12-22 CN CN202223448698.2U patent/CN219419164U/en active Active
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