CN219716972U

CN219716972U - Battery module and energy storage device with same

Info

Publication number: CN219716972U
Application number: CN202320288770.5U
Authority: CN
Inventors: 张德民; 曲凡多; 徐颖莹; 杜雪泽
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-09-19
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses a battery module and an energy storage device with the same, wherein the battery module comprises a battery shell, a battery core assembly and a heat exchange assembly; the battery case is provided with a containing cavity; the battery cell assembly comprises a plurality of single battery cells and a plurality of first heat conducting plates, each first heat conducting plate is adhered between two adjacent single battery cells, a first supporting part is arranged at the lower end of each first heat conducting plate, and a first mounting part is arranged on each first supporting part; the heat exchange assembly comprises heat exchange pieces, the heat exchange pieces are arranged on the lower side of the battery cell assembly, and the heat exchange pieces are sequentially arranged on the first installation part of each first heat conducting plate. According to the battery module provided by the embodiment of the utility model, the first heat-conducting plate is adhered between the adjacent single battery cells, and the heat-exchanging piece is arranged at the lower part of the first heat-conducting plate, so that the continuous cooling of the whole battery cell assembly is realized, the normal operation of the battery cell assembly is ensured, the cooling effect is good, the structure is simple, the space occupation of the battery module in the height direction is reduced, and the production cost can be reduced.

Description

Battery module and energy storage device with same

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module and an energy storage device with the battery module.

Background

In the current immersion cooling scheme of the power battery, if the immersion liquid does not perform external circulation to dissipate heat, a liquid cooling plate is adopted to perform auxiliary heat dissipation. The module or the battery pack is filled with the immersion liquid, when the temperature of the immersion liquid changes, the volume can change, and the existing scheme lacks a special structure for coping with the change of the volume of the immersion liquid. In addition, the liquid cooling plate heat dissipation can increase Z direction space occupation, and needs to scribble heat conduction structure and glue and increase heat exchange efficiency for the cost increases.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a battery module which can effectively cool the battery module, ensure the normal operation of the battery module, and simultaneously reduce the whole production cost of the battery module.

According to an embodiment of the utility model, a battery module includes: the battery shell, the electric core component and the heat exchange component; the battery case is provided with a containing cavity; the battery cell assembly comprises a plurality of single battery cells and a plurality of first heat conducting plates, each first heat conducting plate is adhered between two adjacent single battery cells, a first supporting part is arranged at the lower end of each first heat conducting plate, and a first mounting part is arranged on each first supporting part; the heat exchange assembly comprises heat exchange pieces, the heat exchange pieces are arranged on the lower side of the battery cell assembly, and the heat exchange pieces are sequentially arranged on the first installation part of each first heat conducting plate.

According to the battery module provided by the embodiment of the utility model, the first heat-conducting plate is adhered between the adjacent single battery cells, and the heat-exchanging piece is arranged at the lower part of the first heat-conducting plate, so that the continuous cooling of the whole battery cell assembly is realized, the normal operation of the battery cell assembly is ensured, and the battery module is designed, has a good cooling effect, a simple structure, reduces the space occupation in the height direction of the battery module, and can effectively reduce the production cost.

In addition, the battery module according to the present utility model may further have the following additional technical features:

in some embodiments, the heat exchange member includes a heat exchange tube, the heat exchange assembly further includes a liquid inlet tube and a liquid outlet tube in communication with the heat exchange tube, the heat exchange tube being detachably mounted on the first mounting portion.

In some embodiments, the first mounting portion includes a plurality of first mounting holes through which the heat exchange tubes pass.

In some embodiments, the heat exchange tube comprises a plurality of U-shaped tubes, a liquid inlet end of each of the U-shaped tubes is communicated with the liquid inlet tube, and a liquid outlet end of each of the U-shaped tubes is communicated with the liquid outlet tube.

In some embodiments, the battery module further comprises a second heat conducting plate, the second heat conducting plate is arranged on one side, facing the battery shell, of the battery cell assembly, a second supporting portion is arranged at the lower end of the second heat conducting plate, a second mounting portion is arranged on the second supporting portion, and the heat exchanging piece is mounted on the second mounting portion.

In some embodiments, the battery case comprises an upper case and a lower case, the upper case and the lower case are detachably connected, a top wall of the upper case is provided with a vent hole and a waterproof breathable film, and the waterproof breathable film is adhered and covered on the vent hole.

In some embodiments, the vent holes are provided in a plurality, and the plurality of vent holes are provided at intervals.

In some embodiments, the upper housing is provided with a punching ridge protruding in a direction away from the accommodating chamber, the punching ridge being provided in plurality, and a plurality of the punching ridges being provided on the upper housing at uniform intervals.

In some embodiments, the upper housing is stamped from sheet metal to construct the vent hole and the stamped ridge.

The utility model further provides an energy storage device with the embodiment.

According to the energy storage device provided by the embodiment of the utility model, the normal operation of the energy storage device can be ensured by arranging the battery module, and meanwhile, the production cost of the energy storage device is reduced.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Fig. 1 is an explosion of a battery module according to an embodiment of the present utility model;

fig. 2 is an assembly view of a battery cell assembly and a heat exchange assembly of a battery module according to an embodiment of the present utility model;

fig. 3 is a schematic view of a heat exchange assembly of a battery module according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a first heat conductive plate of a battery module according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of an upper case of a battery module according to an embodiment of the present utility model;

fig. 6 is a top view of an upper case of the battery module according to the embodiment of the present utility model;

fig. 7 is a sectional view according to line A-A in fig. 6.

Reference numerals:

100. a battery module;

1. a battery case; 11. an upper housing; 12. a lower housing; 101. a vent hole; 102. a waterproof breathable film; 103. stamping the ridge;

2. a cell assembly; 21. a single cell; 22. a first heat-conducting plate; 23. a second heat-conducting plate; 201. a first support portion; 202. a first mounting portion;

3. a heat exchange assembly; 31. a heat exchange member; 32. a liquid inlet pipe; 33. and a liquid outlet pipe.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

A battery module 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 7.

As shown in fig. 1 to 7, a battery module 100 according to an embodiment of the present utility model includes: the battery comprises a battery shell 1, an electric core assembly 2 and a heat exchange assembly 3; the battery case 1 has a housing cavity in which the cell assembly 2 and the heat exchange assembly 3 are both disposed.

Further, the battery cell assembly 2 includes a plurality of single battery cells 21 and a plurality of first heat-conducting plates 22, each first heat-conducting plate 22 is adhered between two adjacent single battery cells 21, a first supporting portion 201 is provided at the lower end of each first heat-conducting plate 22, and a first mounting portion 202 is provided on the first supporting portion 201; the heat exchange assembly 3 comprises a heat exchange member 31, the heat exchange assembly 3 is arranged on the lower side of the battery cell assembly 2, and the heat exchange member 31 is sequentially arranged on the first installation part 202 of each first heat conducting plate 22. Specifically, two side surfaces of each first heat-conducting plate 22 are respectively bonded with side surfaces of adjacent single battery cells 21, so that heat generated by each single battery cell 21 in the operation process can be effectively conducted to the first heat-conducting plate 22 bonded with the single battery cell, and then the heat exchange piece 31 on the first supporting part 201 of each first heat-conducting plate 22 can effectively exchange heat on the first heat-conducting plate 22, and finally the aim of cooling the whole battery cell assembly 2 is achieved; the design is simple in structure, low in cost and good in cooling effect.

Still further, the heat exchanging member 31 is mounted on the first mounting part 202, which makes full use of the space at the first supporting part 201 of the first heat conducting plate 22, effectively reduces space occupation in the height direction of the battery module 100, improves space utilization in the accommodating chamber, and simultaneously effectively reduces production cost.

In addition, the first supporting portion 201 can support the whole battery cell assembly 2, so that the battery cell assembly 2 and the battery case 1 can be prevented from contacting, a certain insulation protection effect is achieved, and the overall safety performance of the battery module 100 is improved.

Optionally, the accommodating cavity can be filled with an immersion liquid, the immersion liquid can absorb heat generated by the battery cell assembly 2, so that normal operation of the battery cell assembly 2 is ensured, the heat absorbed by the immersion liquid can be absorbed by the heat exchange piece 31, and thus, the immersion liquid can continuously absorb the heat of the battery cell assembly 2, and continuous cooling of the battery cell assembly 2 is realized.

According to the battery module 100 provided by the embodiment of the utility model, the first heat-conducting plate 22 is adhered between the adjacent single battery cells 21, and the heat-exchanging piece 31 is arranged at the lower part of the first heat-conducting plate 22, so that the continuous cooling of the whole battery cell assembly 2 is realized, the normal operation of the battery cell assembly 2 is ensured, and the battery module 100 has the advantages of good cooling effect, simple structure, reduced space occupation in the height direction of the battery module 100 and capability of effectively reducing the production cost.

In one embodiment of the present utility model, as shown in fig. 1 to 7, the heat exchanging member 31 may include a heat exchanging pipe, and the heat exchanging assembly 3 may further include a liquid inlet pipe 32 and a liquid outlet pipe 33 communicating with the heat exchanging pipe, the heat exchanging pipe being detachably mounted on the first mounting portion 202. In this embodiment, the cooling liquid flows into the heat exchange tube from the liquid inlet tube 32, takes away heat in the wall of the heat exchange tube in the flowing process in the heat exchange tube, and finally flows out from the liquid outlet tube 33 to realize cooling circulation, so that the heat exchange tube can continuously absorb heat transferred by the battery cell assembly 2, and continuous cooling of the battery cell assembly 2 is realized, thereby effectively avoiding thermal runaway of the battery cell assembly 2 and ensuring normal operation of the battery cell assembly 2.

In addition, the heat exchange tube is detachably connected with the first mounting portion 202, so that the heat exchange tube is convenient to mount and dismount, the assembly efficiency of the heat exchange tube can be effectively improved, in addition, the maintenance efficiency can be improved when the heat exchange tube is maintained and replaced, and the maintenance cost is reduced.

In one embodiment of the present utility model, as shown in fig. 1 to 7, the first mounting portion 202 may include a plurality of first mounting holes through which the heat exchange tubes pass. Specifically, as shown in fig. 1 to 4, for example, the plurality of first mounting holes are uniformly spaced apart and arranged on the first supporting portions 201 in parallel, the first mounting holes on two adjacent first supporting portions 201 are uniformly and oppositely arranged, and the heat exchange tubes sequentially pass through the oppositely arranged first mounting holes and are mounted on the first supporting portions 201, so that the space occupation in the overall height direction of the battery module 100 can be effectively reduced, the space utilization rate in the accommodating cavity can be improved, and the production cost of the battery module 100 can be effectively reduced.

In one embodiment of the present utility model, as shown in fig. 1 to 7, the heat exchange tube may include a plurality of U-shaped tubes, each of which has a liquid inlet end in communication with the liquid inlet tube 32 and a liquid outlet end in communication with the liquid outlet tube 33. In the embodiment, the heat exchange area of the heat exchange tube can be enlarged by arranging the plurality of U-shaped tubes, so that the heat exchange effect of the heat exchange tube can be further improved; all the liquid inlet ends and the liquid outlet ends of the U-shaped pipes are respectively connected with the liquid inlet pipe 32 and the liquid outlet pipe 33, so that cooling liquid can be ensured to enter all the U-shaped pipes simultaneously to exchange heat, all the U-shaped pipes can synchronously exchange heat and cool the battery cell assembly 2, and the cooling effect can be effectively improved.

In one embodiment of the present utility model, as shown in fig. 1 to 7, the battery module 100 may further include a second heat conductive plate 23, the second heat conductive plate 23 being disposed at a side of the battery cell assembly 2 facing the battery case 1, a second support part being disposed at a lower end of the second heat conductive plate 23, a second mounting part being disposed on the second support part, and the heat exchanging member 31 being mounted on the second mounting part. In this embodiment, the heat conducting effect on the battery cell assembly 2 can be further improved by the arrangement of the second heat conducting plate 23, and the second heat conducting plate 23 can transfer the heat generated by the operation of the battery cell assembly 2 to the heat exchanging member 31, so that the cooling liquid in the heat exchanging member 31 absorbs the heat, thereby achieving the purpose of cooling the battery cell assembly 2.

In one embodiment of the present utility model, as shown in fig. 1 to 7, the battery case 1 may include an upper case 11 and a lower case 12, the upper case 11 and the lower case 12 being detachably connected, a top wall of the upper case 11 being provided with a vent hole 101 and a waterproof and breathable film 102, the waterproof and breathable film 102 being adhered to cover the vent hole 101. Specifically, the heat generated during operation of the battery cell assembly 2 heats the immersion liquid filled in the accommodating cavity, the immersion liquid thermally expands due to the temperature rise, so that the volume becomes larger, the air pressure in the accommodating cavity rises, at this time, compressed air can be discharged out of the accommodating cavity through the vent hole 101 on the top wall of the upper shell 11, and meanwhile, the waterproof and breathable film 102 covered on the vent hole 101 can also selectively enable air to pass through to block the immersion liquid, so that the air pressure in the accommodating cavity can be reduced, explosion is prevented, and damage to the battery module 100 and peripheral electrical components caused by leakage of the immersion liquid can be avoided.

In one embodiment of the present utility model, as shown in fig. 1 to 7, the vent holes 101 are provided in plurality, and the plurality of vent holes 101 are provided at intervals. By arranging a plurality of vent holes 101, the exhaust effect can be improved, so that the gas in the accommodating cavity can be exhausted more quickly; the plurality of vent holes 101 are spaced apart to allow the gas in the receiving chamber to be discharged separately, preventing the risk of gas accumulation.

In one embodiment of the present utility model, as shown in fig. 1 to 7, the upper case 11 is provided with a punching ridge 103, the punching ridge 103 being protruded in a direction away from the receiving chamber, the punching ridge 103 being provided in plurality, the plurality of punching ridges 103 being provided on the upper case 11 at uniform intervals. The arrangement of the stamping ridges 103 can effectively improve the structural strength and rigidity of the upper shell 11, and can improve the deformation resistance of the upper shell 11, so that the overall protection performance of the battery shell 1 is further improved.

In addition, when the volume of the immersion liquid in the accommodating chamber increases due to thermal expansion, the immersion liquid having an increased volume may enter the protruding space formed by the pressing ridge 103, and thus, the pressure of the entire battery case 1 may be reduced, and leakage of the immersion liquid may be prevented.

In one embodiment of the present utility model, as shown in fig. 1 to 7, the upper housing 11 is punched from a metal plate material to construct the ventilation holes 101 and the punched ridges 103, so that the uniformity of the whole upper housing 11 can be improved, the structural strength and rigidity can be improved, and the production cost can be reduced.

In some embodiments, for example, as shown in fig. 1 to 2, the first and second heat conductive plates 22 and 23 may have holes in the inside thereof, and the presence of the holes may increase the structural strength and rigidity of the first and second heat conductive plates 22 and 23 on the one hand and the heat absorption amount and heat conduction efficiency on the other hand, thereby further increasing the cooling effect on the battery module 100.

In some embodiments, for example, as shown in fig. 1, two through holes are provided in the circumference of the lower case 12, and the two through holes are respectively engaged with the liquid inlet pipe 32 and the liquid outlet pipe 33, and the liquid inlet pipe 32 and the liquid outlet pipe 33 are protruded from the through holes out of the battery module 100 so as to be connected to external devices.

According to the energy storage device provided by the embodiment of the utility model, the battery module 100 can ensure the normal operation of the energy storage device, and meanwhile, the production cost of the energy storage device is reduced.

Other constructions and operations of the battery module 100 and the energy storage device according to the embodiment of the present utility model are known to those skilled in the art, and will not be described in detail herein.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery module, comprising:

a battery case (1), the battery case (1) having a receiving chamber;

the battery cell assembly (2), the battery cell assembly (2) comprises a plurality of single battery cells (21) and a plurality of first heat-conducting plates (22), each first heat-conducting plate (22) is adhered between two adjacent single battery cells (21), a first supporting part (201) is arranged at the lower end of each first heat-conducting plate (22), and a first installation part (202) is arranged on each first supporting part (201);

the heat exchange assembly (3), the heat exchange assembly (3) comprises a heat exchange member (31), the heat exchange assembly (3) is arranged on the lower side of the battery cell assembly (2), and the heat exchange member (31) is sequentially arranged on the first installation part (202) of each first heat conducting plate (22).

2. The battery module according to claim 1, wherein the heat exchange member (31) includes a heat exchange tube, the heat exchange assembly (3) further includes a liquid inlet pipe (32) and a liquid outlet pipe (33) in communication with the heat exchange tube, and the heat exchange tube is detachably mounted on the first mounting portion (202).

3. The battery module according to claim 2, wherein the first mounting portion (202) includes a plurality of first mounting holes through which the heat exchange tube passes.

4. The battery module according to claim 2, wherein the heat exchange tube comprises a plurality of U-shaped tubes, a liquid inlet end of each of the U-shaped tubes communicates with the liquid inlet tube (32), and a liquid outlet end of each of the U-shaped tubes communicates with the liquid outlet tube (33).

5. The battery module according to any one of claims 1 to 4, further comprising a second heat conducting plate (23), wherein the second heat conducting plate (23) is arranged on one side of the cell assembly (2) facing the battery case (1), a second supporting part is arranged at the lower end of the second heat conducting plate (23), a second mounting part is arranged on the second supporting part, and the heat exchanging member (31) is mounted on the second mounting part.

6. The battery module according to claim 1, wherein the battery case (1) includes an upper case (11) and a lower case (12), the upper case (11) and the lower case (12) are detachably connected, a top wall of the upper case (11) is provided with a vent hole (101) and a waterproof breathable film (102), and the waterproof breathable film (102) is adhered to and covered on the vent hole (101).

7. The battery module according to claim 6, wherein the vent holes (101) are provided in plural, and a plurality of the vent holes (101) are provided at a spacing.

8. The battery module according to claim 6, wherein the upper case (11) is provided with a pressing ridge (103), the pressing ridge (103) protruding in a direction away from the receiving cavity, the pressing ridge (103) being provided in plurality, the pressing ridges (103) being provided in plurality on the upper case (11) at uniform intervals.

9. The battery module according to claim 8, wherein the upper case (11) is stamped from a metal plate material to construct the vent hole (101) and the stamped ridge (103).

10. An energy storage device comprising a battery module according to any one of claims 1-9.