CN218975570U - Liquid cooling battery assembly, power battery and electric vehicle - Google Patents
Liquid cooling battery assembly, power battery and electric vehicle Download PDFInfo
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- CN218975570U CN218975570U CN202223344076.5U CN202223344076U CN218975570U CN 218975570 U CN218975570 U CN 218975570U CN 202223344076 U CN202223344076 U CN 202223344076U CN 218975570 U CN218975570 U CN 218975570U
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Abstract
The utility model belongs to the technical field of battery cooling, and particularly provides a liquid cooling battery assembly, a power battery and an electric vehicle. The cooling device aims to solve the problems that the cooling effect is poor or the energy density is insufficient due to poor structural design of the cooling device of the existing power battery. Therefore, the liquid cooling battery assembly comprises the liquid cooling plate, the harmonica tube group, the liquid supply pipeline, the battery core and the pole piece, at least one part of the liquid cooling plate is arranged on the first end face of the battery core and used for cooling the battery core from the first end face, at least one part of the harmonica tube group is arranged on the second end face of the battery core and used for cooling the battery core from the second end face, the pole piece is connected with the battery core and is positioned between the first end face and the second end face, the liquid cooling plate is provided with the cooling channel, the harmonica tube group comprises a plurality of harmonica tubes which are communicated, and the liquid supply pipeline is communicated with the cooling channel and the harmonica tubes to supply cooling liquid so as to effectively ensure good cooling effect and effectively realize temperature control, and the liquid cooling battery assembly can also effectively realize light-weight design.
Description
Technical Field
The utility model belongs to the technical field of battery cooling, and particularly provides a liquid cooling battery assembly, a power battery and an electric vehicle.
Background
With the increasing popularity of electric vehicles, users have also placed higher demands on the overall performance of the electric vehicle, and power batteries are one of the most interesting elements for users as a core element for powering the electric vehicle, how the performance of the power batteries plays a critical role in the overall performance of the electric vehicle. Particularly, in the process of inputting and outputting electric quantity with high power, the battery of the electric vehicle can have high current continuously passing through the interior of the battery, so that a large amount of heat is generated in the battery, if the battery cannot be timely cooled, the use safety of the battery is easily affected, and even the battery is directly damaged, so that the thermal management of the battery is always paid attention to by those skilled in the art.
Specifically, the power batteries of existing electric vehicles are all provided with cooling devices to reduce the temperature of the batteries in time, and among many cooling methods, liquid cooling plates provided based on the liquid cooling principle are most widely used because of various advantages such as simple structure, high reliability, good cooling effect, and the like. The existing mode for realizing cooling by using a liquid cooling plate mainly comprises two modes: 1. the liquid cooling plates are arranged at the top and the bottom of the battery core, and the arrangement mode can ensure good cooling effect, but can greatly increase the weight of the battery, so that the battery pack is not in accordance with the requirement of light weight design, and the problem of obviously reducing the energy density of the battery pack is caused; 2. based on this, the existing partial batteries are provided with a liquid cooling plate only at the bottom of the battery cell, and the arrangement mode can effectively improve the energy density of the battery pack, but the cooling effect of the battery pack is also obviously reduced.
Accordingly, there is a need in the art for a new liquid cooled battery assembly, power battery and electric vehicle that addresses the above-described problems.
Disclosure of Invention
The utility model aims to solve the technical problems, namely, the problems that the cooling effect is poor or the energy density is insufficient due to the fact that the structural design of the cooling device of the existing power battery is poor.
In a first aspect, the utility model provides a liquid-cooled battery assembly comprising a liquid-cooled plate, a harmonica stack, a liquid supply line, an electrical core and a pole piece,
at least one part of the liquid cooling plate is arranged on a first end face of the electric core, at least one part of the harmonica tube group is arranged on a second end face of the electric core, the first end face and the second end face are opposite two end faces, the pole piece is connected with the electric core and is positioned between the first end face and the second end face,
the cooling plate is provided with a cooling channel, the harmonica tube group comprises a plurality of harmonica tubes which are communicated, and the liquid supply pipeline is communicated with the cooling channel and the harmonica tubes to supply cooling liquid.
In the above-described preferred embodiment of the liquid-cooled battery pack, a part of the plurality of harmonica pipes is disposed in the vicinity of the pole piece.
In the above-described preferred embodiment of the liquid-cooled battery assembly, a part of the plurality of harmonica tubes is disposed around an edge of the second end face of the battery cell.
In the preferable mode of the above-described liquid-cooled battery pack, a part of the plurality of harmonica pipes extends to the outside of the battery cell,
the liquid inlet and the liquid outlet of the harmonica tube group are arranged on the harmonica tube extending to the outside of the electric core.
In the above preferred embodiment of the liquid-cooled battery assembly, a shape of a portion of the liquid-cooled plate matches a shape of the first end surface of the battery cell.
In the preferable technical scheme of the liquid-cooled battery assembly, a part of the liquid-cooled plate extends to the outside of the battery cell,
the liquid inlet and the liquid outlet of the liquid cooling plate are both arranged on the liquid cooling plate extending to the outside of the battery cell.
In the preferred technical scheme of the liquid-cooled battery assembly, the liquid inlet of the harmonica tube set and the liquid inlet of the liquid-cooled plate are arranged oppositely, and the liquid outlet of the harmonica tube set and the liquid outlet of the liquid-cooled plate are arranged oppositely.
In the above preferred technical solution of the liquid-cooled battery assembly, the number of the electric cores is two, and the two electric cores are arranged on the liquid-cooled plate side by side.
In a second aspect, the present utility model provides a power battery comprising a liquid cooled battery assembly as described in any one of the preferred embodiments above.
In a third aspect, the present utility model provides an electric vehicle comprising the power cell described in the above preferred embodiment.
Under the condition that the technical scheme is adopted, the liquid cooling battery assembly comprises the liquid cooling plate, the harmonica tube group, the liquid supply pipeline, the battery core and the pole piece, at least one part of the liquid cooling plate is arranged on the first end face of the battery core and used for cooling the battery core from the first end face of the battery core, at least one part of the harmonica tube group is arranged on the second end face of the battery core and used for cooling the battery core from the second end face of the battery core, the first end face and the second end face are opposite to each other, so that the battery core can be cooled comprehensively, the pole piece is connected with the battery core and located between the first end face and the second end face, the liquid cooling plate is provided with a cooling channel, the harmonica tube group comprises a plurality of communicated harmonica tubes, and the liquid supply pipeline is communicated with the cooling channel and the harmonica tubes to supply cooling liquid, and the cooling liquid can achieve better cooling effect through the cooling liquid. Based on the above, the main cooling effect is realized through the arrangement of the liquid cooling plate, and the auxiliary cooling is performed by combining the arrangement of the harmonica tube group, so that the combination arrangement of the liquid cooling plate and the harmonica tube group not only can effectively ensure a good cooling effect, but also can effectively ensure the cooling requirement of the power battery under a fast charging working condition, and can effectively reduce the weight occupied by the cooling element, thereby better realizing the light-weight design, ensuring the cooling effect of the battery, and simultaneously effectively improving the energy density of the power battery.
Drawings
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the overall structure of a liquid-cooled battery assembly of the present utility model;
11. a liquid cooling plate; 111. a body portion; 112. an extension; 1121. a liquid inlet; 1122. a liquid outlet; 113. a cooling channel;
12. a harmonica tube set; 121. a first mouth organ tube; 122. a second harmonica tube; 123. a third harmonica tube; 1231. a liquid inlet; 1232. a liquid outlet;
13. a battery cell;
14. pole pieces.
Detailed Description
Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. Those skilled in the art can adapt it as desired to suit a particular application. For example, the electric vehicle of the present utility model may be a pure electric vehicle or a hybrid electric vehicle; the vehicle can be a car or a business car. Such changes as to the specific type of vehicle do not depart from the basic principles of the utility model and are intended to be within the scope of the utility model.
It should be noted that, in the description of the present utility model, terms such as "top," "bottom," "left," "right," "inner," "outer," and the like indicate directional or positional relationships based on the directional or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
Referring first to fig. 1, as shown in fig. 1, the liquid-cooled battery assembly of the present utility model includes a liquid-cooled plate 11, a harmonica tube set 12, a liquid supply pipeline (not shown in the figure), a battery core 13 and a pole piece 14, at least a portion of the liquid-cooled plate 11 is disposed on a first end face of the battery core 13, at least a portion of the harmonica tube set 12 is disposed on a second end face of the battery core 13, the first end face and the second end face are opposite two end faces, the pole piece 14 is connected with the battery core 13 and is located between the first end face and the second end face, a cooling channel 113 is disposed on the liquid-cooled plate 11, the harmonica tube set 12 includes a plurality of harmonica tubes that are communicated with each other, and the liquid supply pipeline is communicated with the cooling channel 113 and the harmonica tubes to supply cooling liquid. The present utility model is not limited to the specific structure of the liquid supply line and the specific type of the cooling liquid flowing therein, as long as the liquid supply line is capable of supplying the liquid cooling plate 11 and the harmonica pipe group 12 with the cooling liquid.
Based on the arrangement mode, the liquid cooling battery assembly realizes the main cooling effect by arranging the liquid cooling plate 11, and is combined with the arrangement of the harmonica tube group 12 to perform auxiliary cooling, so that the combination arrangement of the liquid cooling plate 11 and the harmonica tube group 12 not only can effectively ensure good cooling effect, but also can effectively ensure the cooling requirement of the power battery under the fast charging working condition, and can effectively reduce the weight occupied by the cooling element, thereby better realizing light-weight design, ensuring the cooling effect of the battery, and simultaneously effectively improving the energy density of the power battery.
Specifically, in this embodiment, the number of the electric cores 13 is two, the two electric cores 13 are arranged on the liquid cooling plate 11 side by side, a certain gap is provided between the two electric cores 13 to facilitate heat dissipation, and the specific size of the gap can be set according to the actual requirement, however, the number of the electric cores 13 is not limited, and a person skilled in the art can set according to the actual requirement, for example, the number of the electric cores 13 can be one or more. The battery cells 13 are flat cuboid as a whole, and two side surfaces (top surface and bottom surface in fig. 1) with the largest area of the battery cells 13 are the first end surface and the second end surface, and referring to the orientation shown in fig. 1, two corresponding pole pieces 14 of each battery cell 13 are rectangular and are respectively arranged on the outer side surface and the inner side surface of the battery cell 13. It should be noted that the specific type and shape of the battery cell 13 and the pole piece 14 and the connection relation are not limited in the utility model, and the present utility model can be set by a person skilled in the art according to the actual use requirement.
With continued reference to fig. 1, further, the liquid cooling plate 11 includes a body portion 111 and an extension portion 112 that are integrally disposed, and of course, the body portion 111 and the extension portion 112 may be separately disposed and then integrally connected by a connecting member. Specifically, the body portion 111 has a rectangular parallelepiped plate-like structure, and the shape of the body portion 111 matches the shape of the first end faces (i.e., the bottom faces in fig. 1) of the two cells 13 so that both the cells 13 can be connected to the body portion 111 through the first end faces, so that the body portion 111 can simultaneously perform cooling treatment on both the cells 13 from the bottom; of course, the present utility model does not limit the specific shape of the body 111, as long as the first end surfaces of the two cells 13 can be connected to the body 111. The utility model also does not limit the specific connection mode of the body 111 and the battery cell 13, preferably adopts a bonding mode, and preferably bonds through heat conduction structural adhesive, so as to better realize heat conduction and further better ensure the cooling effect. In addition, the body 111 is further provided with cooling channels 113, and the cooling channels 113 are uniformly distributed over the whole body 111, so as to achieve a better cooling effect. It should be noted that, the specific distribution manner of the cooling channels 113 on the main body 111 is not limited in the present utility model, and those skilled in the art can set the cooling channels according to the actual use requirements. In addition, the extension portion 112 is also a rectangular plate structure, the length and width of the extension portion 112 are respectively smaller than the length and width of the main body portion 111, the extension portion 112 is also provided with cooling channels 113, the cooling channels 113 are uniformly distributed on the whole extension portion 112, the cooling channels 113 arranged on the extension portion 112 are communicated with the cooling channels 113 arranged on the main body portion 111, and the liquid inlet 1121 and the liquid outlet 1122 of the liquid cooling plate 11 are arranged on the extension portion 112. It should be further noted that, the specific shape of the extension portion 112, the specific distribution manner of the cooling channels 113 on the extension portion 112, and the specific arrangement positions of the liquid inlet 1121 and the liquid outlet 1122 are not limited in the present utility model, and may be set by those skilled in the art according to actual use requirements.
Further, in the present embodiment, the harmonica pipe group 12 includes the first harmonica pipes 121, the second harmonica pipes 122 and the third harmonica pipes 123, referring to the orientation in fig. 1, the number of the first harmonica pipes 121 is two, the two first harmonica pipes 121 are arranged transversely, each first harmonica pipe 121 is connected with two electric cores 13, the parts of the first harmonica pipes 121 connected with the electric cores 13 are located near the pole pieces 14, and the pole pieces 14 are the parts with the largest heat productivity of the battery, so that the utility model can achieve better cooling effect by arranging the first harmonica pipes 121 near the pole pieces 14, thereby precisely controlling the highest temperature of the battery and simultaneously effectively controlling the temperature difference of the battery. Of course, the present utility model does not limit the specific shape of the first harmonica tube 121, and those skilled in the art can set the shape according to the actual requirements; for example, the first mouth tube 121 may also be disposed adjacent to the pole piece 14 in a back-and-forth curved manner. The number of the second harmonica pipes 122 is five, the five second harmonica pipes 122 are longitudinally arranged, two second harmonica pipes 122 are arranged on the battery cells 13 positioned on the right side, and the other three second harmonica pipes 122 are arranged on the battery cells 13 positioned on the left side; two second harmonica pipes 122 arranged on the right side electric core 13 are respectively arranged on the left side and the right side of the right side electric core 13, and two ends of the two second harmonica pipes 122 arranged on the right side electric core 13 are respectively connected with two ends of a part of the first harmonica pipe 121 positioned on the right side electric core 13, so that a ring shape which is arranged around the edge of the top surface of the right side electric core 13 is formed; two of the three second harmonica pipes 122 arranged on the left battery core 13 are arranged on the left side of the left battery core 13, the remaining one second harmonica pipe 122 is arranged on the right side of the left battery core 13, two ends of the second harmonica pipes 122 arranged on the right side of the left battery core 13 are respectively connected with the right ends of the parts of the two first harmonica pipes 121 on the left battery core 13, the outer ends of the two second harmonica pipes 122 arranged on the left side of the left battery core 13 are respectively connected with the left ends of the parts of the two first harmonica pipes 121 on the left battery core 13, the number of the third harmonica pipes 123 is two, the two third harmonica pipes 123 are all transversely arranged and extend to the outside of the left battery core 13, the inner ends of the two second harmonica pipes 122 arranged on the left side of the left battery core 13 are respectively connected with the right ends of the third harmonica pipes 123, and the left ends of the two third harmonica pipes 123 are respectively arranged to be liquid inlets 1231 and 1232 of the harmonica 12. In addition, as a preferable arrangement mode, the liquid inlet 1231 of the harmonica pipe group 12 and the liquid inlet 1121 of the liquid cooling plate 11 are arranged oppositely, and the liquid outlet 1232 of the harmonica pipe group 12 and the liquid outlet 1122 of the liquid cooling plate 11 are arranged oppositely, so that the liquid supply pipeline can be rapidly divided into two paths, and the liquid cooling plate 11 positioned at the bottom and the harmonica pipe group 12 positioned at the top are respectively supplied, thereby effectively realizing comprehensive cooling.
It should be noted that the above arrangement is only a preferred arrangement for better enhancing the cooling effect, and a person skilled in the art may set the specific arrangement of the harmonica tube set 12 according to the actual use requirement, as long as at least a portion of the harmonica tube set 12 is disposed on the second end face of the battery core 13. In addition, it should be noted that the specific connection mode of the mouth organ pipe group 12 and the battery cell 13 is not limited, and the bonding mode is preferably adopted, and the bonding is preferably performed through the heat conducting structural adhesive, so that heat conduction is better realized, and the cooling effect is better ensured.
In addition, the utility model also claims a power battery comprising the liquid-cooled battery assembly of any one of the embodiments above; of course, the utility model does not limit other structures of the power battery, and the power battery can be set by a person skilled in the art according to actual use requirements.
Furthermore, the utility model also claims an electric vehicle comprising the power battery described in the above embodiments; of course, the utility model does not limit other parts of the electric vehicle, and the electric vehicle can be set by a person skilled in the art according to actual use requirements.
Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to only these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.
Claims (10)
1. A liquid cooling battery assembly is characterized in that the liquid cooling battery assembly comprises a liquid cooling plate, a harmonica tube group, a liquid supply pipeline, an electric core and a pole piece,
at least one part of the liquid cooling plate is arranged on a first end face of the electric core, at least one part of the harmonica tube group is arranged on a second end face of the electric core, the first end face and the second end face are opposite two end faces, the pole piece is connected with the electric core and is positioned between the first end face and the second end face,
the cooling plate is provided with a cooling channel, the harmonica tube group comprises a plurality of harmonica tubes which are communicated, and the liquid supply pipeline is communicated with the cooling channel and the harmonica tubes to supply cooling liquid.
2. The liquid cooled battery assembly of claim 1, wherein a portion of the plurality of harmonica tubes are disposed adjacent the pole pieces.
3. The liquid cooled battery assembly of claim 2, wherein a portion of the plurality of harmonica tubes are disposed around an edge of the second end face of the battery cell.
4. The liquid cooled battery assembly of claim 1, wherein a portion of the plurality of harmonica tubes extend outside of the cells,
the liquid inlet and the liquid outlet of the harmonica tube group are arranged on the harmonica tube extending to the outside of the electric core.
5. The liquid cooled battery assembly of claim 4, wherein a portion of the liquid cooled plate has a shape that matches a shape of the first end face of the cell.
6. The liquid cooled battery assembly of claim 5, wherein a portion of the liquid cooled plate extends outside of the cell,
the liquid inlet and the liquid outlet of the liquid cooling plate are both arranged on the liquid cooling plate extending to the outside of the battery cell.
7. The liquid cooled battery assembly of claim 6, wherein the liquid inlet of the harmonica stack and the liquid inlet of the liquid cooling plate are disposed in opposition, and the liquid outlet of the harmonica stack and the liquid outlet of the liquid cooling plate are disposed in opposition.
8. The liquid cooled battery assembly of any of claims 1-7, wherein the number of cells is two, two of the cells being disposed side-by-side on the liquid cooled plate.
9. A power cell comprising the liquid cooled battery assembly of any one of claims 1 to 8.
10. An electric vehicle characterized in that it comprises the power battery as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223344076.5U CN218975570U (en) | 2022-12-13 | 2022-12-13 | Liquid cooling battery assembly, power battery and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223344076.5U CN218975570U (en) | 2022-12-13 | 2022-12-13 | Liquid cooling battery assembly, power battery and electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218975570U true CN218975570U (en) | 2023-05-05 |
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ID=86164843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223344076.5U Active CN218975570U (en) | 2022-12-13 | 2022-12-13 | Liquid cooling battery assembly, power battery and electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218975570U (en) |
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2022
- 2022-12-13 CN CN202223344076.5U patent/CN218975570U/en active Active
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