CN218160594U

CN218160594U - Battery pack and battery pack

Info

Publication number: CN218160594U
Application number: CN202222391776.3U
Authority: CN
Inventors: 赵冬
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2022-12-27
Anticipated expiration: 2032-09-08

Abstract

The application provides a group battery and battery package, this group battery includes: the battery heat exchanger comprises a heat exchange plate and a battery arranged on at least one side of the large side surface of the heat exchange plate; the battery is fixedly connected with the heat exchange plate, and the battery heat exchanger also comprises a plate-shaped support assembly for supporting the battery; along the height direction of the battery, the plate-shaped supporting component is positioned below the battery and is fixedly connected with the battery; the large side face of the heat exchange plate is perpendicular to the plate-shaped supporting assembly, and a supporting structure for supporting the heat exchange plate is arranged between the plate-shaped supporting assembly and the heat exchange plate. In the technical scheme, the heat exchange plate is supported by the support structure arranged between the plate-shaped support assembly and the heat exchange plate, so that the structural stability of the heat exchange plate is improved, the heat exchange plate, the battery and the plate-shaped support assembly are connected into a whole, and the heat radiation effect of the heat exchange plate on the battery is further ensured.

Description

Battery pack and battery pack

Technical Field

The application relates to the technical field of batteries, in particular to a battery pack and a battery pack.

Background

The cooling rate that the big side liquid cooling of battery was showing and has improved the battery, and then has improved the holistic charge-discharge rate of battery package, nevertheless compare in the cold drawing of placing in battery package bottom or top, the perpendicular bottom plate setting of cold drawing leads to the cold drawing to have in battery package vibration process with the risk that the battery structure became invalid.

SUMMERY OF THE UTILITY MODEL

The application provides a group battery and battery package for improve the radiating effect between the battery.

In a first aspect, there is provided a battery pack including: the battery heat exchanger comprises a heat exchange plate and a battery arranged on at least one side of the large side surface of the heat exchange plate; the battery is fixedly connected with the heat exchange plate, and the heat exchange plate also comprises a plate-shaped support assembly for supporting the battery; along the height direction of the battery, the plate-shaped supporting component is positioned below the battery and fixedly connected with the battery;

the large side face of the heat exchange plate is perpendicular to the plate-shaped supporting assembly, and a supporting structure for supporting the heat exchange plate is arranged between the plate-shaped supporting assembly and the heat exchange plate.

In the above scheme, the heat exchange plate is supported by arranging the supporting structure between the plate-shaped supporting component and the heat exchange plate, so that the structural stability of the heat exchange plate is improved, the heat exchange plate, the battery and the plate-shaped supporting component are connected into a whole, and the heat radiation effect of the heat exchange plate on the battery is further ensured.

In a second aspect, a battery pack is provided, which includes a case and the battery pack of any one of the above items disposed in the case. In the above scheme, the heat exchange plate is supported by arranging the supporting structure between the plate-shaped supporting component and the heat exchange plate, so that the structural stability of the heat exchange plate is improved, the heat exchange plate, the battery and the plate-shaped supporting component are connected into a whole, and the heat radiation effect of the heat exchange plate on the battery is further ensured.

Drawings

Fig. 1 is a schematic structural diagram of a battery pack provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a battery pack provided in an embodiment of the present application;

fig. 3 is a side view of a battery pack provided by an embodiment of the present application;

fig. 4 is a schematic structural diagram of a plate-shaped support assembly according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of another battery pack provided in the embodiment of the present application.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings and examples. The features and advantages of the present application will become more apparent from the description.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not conflict with each other.

To facilitate understanding of the battery pack provided in the embodiments of the present application, an application scenario of the battery pack is first described. The battery pack provided by the embodiment of the application can be used as power equipment and applied to electric vehicles, such as electric automobiles, electric buses, electric trucks and other different vehicles. When the battery pack is used, the temperature greatly affects the performance of the battery. Therefore, the conventional battery pack adopts a large side (the side with a large area in the battery) attached heat exchange plate to improve the heat dissipation effect of the battery. However, when the large side of the battery is connected with the heat exchange plate, the heat exchange plate is easy to fall off. Therefore, the embodiment of the application provides a battery pack, which is used for improving the stability of a heat exchange plate in the battery pack. The details are described below with reference to the specific drawings and examples.

Referring to fig. 1, fig. 1 shows a schematic structural view of a battery pack. In order to facilitate understanding of the battery pack 200 provided in the embodiment of the present application, a structure in which the battery pack 200 is applied to a battery pack will be described first. The battery pack 200 includes a battery 210 and a heat exchange plate 220, and the battery 210 and the heat exchange plate 220 are fixed and mounted in the case when assembled in the case 100.

Referring to fig. 2, fig. 2 shows a schematic structural diagram of a battery pack 200 provided in an embodiment of the present application. To facilitate understanding of the battery pack 200 provided in the embodiments of the present application, a main structure of the battery pack 200 will be described first. The battery pack 200 includes a battery 210 and a heat exchange plate 220, and the battery 210 is located at least at one side of a large side of the heat exchange plate 220 when the battery pack 200 is assembled. Illustratively, the batteries 210 are arranged on both sides of the heat exchange plate 220, or the batteries 210 are arranged on only one side of the heat exchange plate 220. The large side surfaces of the heat exchange plate 220 are the surfaces with the largest surface area of the heat exchange plate 220, that is, the two opposite side surfaces in the thickness direction of the heat exchange plate 220 are the large side surfaces of the heat exchange plate, respectively.

When the battery 210 is placed in the box of the battery pack, the battery 210 may be placed in different ways, for example, when the battery 210 is placed right, the pole of the battery 210 is located on the top surface of the battery 210, and the bottom surface of the battery 210 faces the bottom plate of the box; when the battery 210 is inverted, the pole of the battery 210 is located on the bottom surface of the battery 210, and the pole faces the bottom plate of the case.

The number of the batteries 210 may be at least two, such as two, three, etc. different numbers. When the number of the cells 210 is at least two, the cells 210 may be arranged in an array, such as an n × m array (n, m are positive integers greater than or equal to 1).

To describe the arrangement of the heat exchange plate 220, the respective surfaces of the battery 210 are explained. In the present embodiment, the battery 210 has a rectangular parallelepiped shape having opposing top and bottom surfaces and four side surfaces between the top and bottom surfaces. In addition, the four side surfaces may be divided into a large side surface and a small side surface according to an area, wherein the large side surface is a side surface having a larger area among the side surfaces of the battery 210, and the small side surface is a side surface having a smaller area among the side surfaces of the battery 210. When the cells 210 are arranged in a row, the small sides of adjacent cells 210 are opposed. When the heat exchange plate 220 is disposed, the heat exchange plate 220 is located between two adjacent rows of the batteries 210, that is, one heat exchange plate 220 is sandwiched between two rows of the batteries 210. The length direction of the heat exchange plate 220 is along the arrangement direction of a row of the batteries 210, and the heat exchange plate 220 is perpendicular to the bottom surfaces of the batteries 210.

As a practical solution, the large side of the heat exchange plate 220 is disposed in contact with the large side of the battery 210. Illustratively, the large sides of the heat exchange plates 220 are attached to the large sides of the cells 210 in the two rows of cells 210 to improve the heat dissipation effect to the cells 210. The above-mentioned joints are referred to as direct contacts, and may be indirectly contacted by other heat conducting and/or insulating structures. The embodiment of the present application is not particularly limited, and only the heat transfer between the heat exchange plate 220 and the battery 210 can be achieved.

When the battery pack 200 is composed of the battery 210 and the heat exchange plates 220, the heat exchange plates 220 and the battery 210 may be alternately arranged, so that the surfaces of two opposite heat exchange plates of the battery 210 are both heat exchanged with the heat exchange plates, thereby improving the heat dissipation effect of the battery 210.

Referring to fig. 3, when the heat exchange plate 220 is disposed, the heat exchange plate 220 does not protrude at least one end in the height direction of the battery 210. Illustratively, the height of the heat exchange plate 220 is less than or equal to the height of the battery 210, wherein the height of the battery 210 refers to the vertical distance from the bottom surface to the top surface of the battery 210, and the height of the battery is H as shown in fig. 3. Illustratively, when the heat exchange plate 220 is mated with the battery 210, the bottom surface of the heat exchange plate 220 is higher than the bottom surface of the battery 210, and the top surface of the heat exchange plate 220 is lower than the top surface of the battery 210. When adopting heat transfer board 220 not to bulge battery 210 and setting up, reduce the risk that heat transfer board 220 and battery utmost point post subassembly isojunction output structure are connected on the one hand, on the other hand improves the whole space utilization of group battery 200. Avoiding that an excessively high heat exchanger plate 220 affects the arrangement of the cells 210 in the cell 210 case.

In the embodiment of the present application, the battery 210 is fixedly connected to the heat exchange plate 220, so that the position of the heat exchange plate 220 is fixed relative to the battery 210, and the heat exchange effect on the battery 210 is ensured. However, the bottom surface of the heat exchange plate 220 is higher than the bottom surface of the battery 210, and the heat exchange plate 220 is supported only by the connection with the battery 210, and is very likely to fall. The battery pack 200 according to the embodiment of the present application further includes a plate-shaped support member 230, and the plate-shaped support member 230 supports the battery cells 210. Furthermore, a support structure supporting the heat exchange plate 220 is provided between the plate-shaped support assembly 230 and the heat exchange plate 220.

When the plate-shaped support member 230 is provided, the plate-shaped support member 230 is positioned below the battery 210 in the height direction of the battery 210 and is fixedly coupled to the battery 210.

The plate-shaped support member 230 may be a plate-shaped structure which is located under the batteries 210 and supports all the batteries 210, i.e., the plate-shaped support member corresponds to the bottom plate of the conventional battery pack case. And the heat exchange plate 220 is disposed perpendicular to the plate-shaped support assembly 230, or it may be understood that the heat exchange plate 220 is perpendicular to the surface of the plate-shaped support assembly 230 carrying the battery 210.

When the plate-shaped support assembly 230 supports the battery 210, the plate-shaped support assembly 230 supports the bottom surface of the battery 210, and the heat exchange plate 220 is in a suspended state, and in order to improve the stability of the heat exchange plate 220, a support structure 240 for supporting the heat exchange plate 220 is arranged between the plate-shaped support assembly 230 and the heat exchange plate 220.

The support structure 240 may be arranged differently, as described separately below.

Illustratively, one end of the support structure 240 abuts the heat exchanger plate 220, and the other end of the support structure 240 is fixedly connected to the plate-shaped support assembly 230. In a specific arrangement, the supporting structure 240 is fixedly disposed on the plate-shaped supporting assembly 230 and is located on a surface of the plate-shaped supporting assembly 230 facing the heat exchange plate 220; when supporting the heat exchanger plate 220, the support structure 240 abuts the heat exchanger plate 220. Specifically, the supporting structure 240 may be an integral structure with the plate-shaped supporting component 230, or the supporting structure 240 may be fixedly connected to the plate-shaped supporting component 230 by bonding, clipping, or by a threaded connection.

Exemplarily, the support structure 240 and the heat exchange plate 220 are integrated, or the support structure 240 and the heat exchange plate 220 are fixedly connected; in addition, the support structure 240 abuts the plate-like support member 230. Specifically, the supporting structure 240 is fixedly disposed on the heat exchange plate 220 and abuts against the plate-shaped supporting assembly 230. At this time, the support structure 240 is disposed on the heat exchanger plate 220, which may be regarded as some protruding structures extending from the heat exchanger plate 220. As can be seen from the above description, the heat exchange plate 220 is supported by the support structure 240 disposed between the plate-shaped support assembly 230 and the heat exchange plate 220, so that the structural stability of the heat exchange plate 220 is improved, the heat exchange plate 220, the battery 210 and the plate-shaped support assembly 230 are connected into a whole, and the heat dissipation effect of the heat exchange plate 220 on the battery 210 is further ensured.

The effect of supporting the heat exchange plate 220 can be achieved whether the supporting structure 240 is disposed on the heat exchange plate 220 or the plate-shaped supporting assembly 230, and the following description will take the example that the supporting structure 240 is disposed on the plate-shaped supporting assembly 230.

The plate-shaped support member 230 may have different structures corresponding to different placement manners of the battery 210. When the battery 210 is upright, the plate-shaped supporting component 230 may be a supporting plate, or may also be a bottom plate of a case of the battery pack; the plate-shaped support member 230 may be a wire harness plate member when the battery 210 is inverted. The plate-shaped support member 230 provided in the embodiment of the present application will be described below by taking a wire harness plate assembly as an example.

When the battery 210 is placed upside down, the terminal protrudes out of the bottom surface of the battery 210. The wiring harness board assembly is located below the pole. And the poles of the batteries 210 face the wire harness board assembly and are conductively connected with the bus bars of the wire harness board assembly, so that the batteries 210 are connected in series or in parallel, and the conductive connection among the batteries 210 is realized.

The support structure 240 is disposed on the harness board assembly on a side of the harness board assembly facing the battery 210. For example, the wire harness plate assembly may include a support plate and a bus bar disposed on the support plate. Wherein the support structure 240 is arranged on the support plate. Illustratively, the support structure 240 and the support plate are separate structures, and the support structure 240 may be fixedly connected to the support plate by bonding, clamping, or a threaded connector (bolt or screw); alternatively, the supporting structure 240 and the supporting plate are an integral structure, and during the manufacturing process, the supporting plate and the supporting structure 240 may be integrally formed or may be formed separately. That is, the supporting structure 240 and the wire harness board assembly may be an integral structure or a separate structure. When the split structure is adopted, the supporting structure 240 may be fixed to the wire harness board assembly by means of bonding, clamping, or a threaded connection.

In supporting the heat exchanger plates 220, each support structure 240 is inserted between the cells 210 on both sides of the corresponding heat exchanger plate 220. Wherein the heat exchanger plate 220 corresponding to each support structure 240 is referred to as a heat exchanger plate 220 supported by the support structure 240. The division is performed in a projection manner, and the setting manner can be understood as that: the support structure 240 at least partially coincides with a perpendicular projection of the battery 210 in the plane of the large side of the heat exchanger plate 220.

When the heat exchange plate 220 is supported by the support structure 240, since the bottom surface of the heat exchange plate 220 is higher than the bottom surface of the battery 210, when the support structure 240 is provided, the top surface (the surface facing away from the support plate) of the support structure 240 is higher than the bottom surface of the battery 210, and the support structure 240 is inserted between the batteries 210 of the adjacent row and supports the heat exchange plate 220. When the structure is adopted, the support structure 240 can be used for separating the batteries 210 in the adjacent rows, the thermal runaway of the batteries 210 can be prevented from being sprayed to the adjacent batteries 210, and the safety performance of the batteries 210 and the batteries 210 can be improved.

In the present embodiment, the modulus of elasticity of the support structure 240 is between 20000-50000MPa. The support structure 240 is made of elastic material, so that damage to the internal structure of the heat exchange plate 220 caused by rigid contact can be avoided, and the safety of the heat exchange plate 220 is improved. For example, the support structure 240 may be made of different materials such as resin, rubber, plastic, etc.

As an alternative, when the support structure 240 is provided, an insulating structure and/or a buffer structure is provided between the support structure 240 and the heat exchanger plate 220. Exemplarily, an insulating layer is provided between the support structure 240 and the heat exchanger plate 220, or a buffer layer is provided between the support structure 240 and the heat exchanger plate 220. Or a layer of structure is arranged to simultaneously have the effects of local buffering and insulation. Or the supporting structure 240 made of foam and hard plastic can be adopted, an insulating layer does not need to be arranged between the supporting structure 240 and the heat exchange plate 220, meanwhile, the impact of the base plate of the box body on the heat exchange plate is prevented, the deformation resistance of the cold plate is improved, and the heat exchange plate is buffered.

As an alternative, when the support structure 240 is provided, the support structure 240 is insulated from the heat exchange plate 220. Adopt insulating material, can reduce the electrical isolation effect between pencil board subassembly and the heat transfer board, reduce the risk that the short circuit appears. In addition, a buffer structure is disposed between the heat exchange plate 220 and the support structure 240. That is, the supporting structure 240 is made of an insulating material, and a buffer layer is disposed between the heat exchange plate 220 and the supporting structure 240, so that the buffering and insulating effects can be achieved.

As an alternative, the support structure 240 is a thermally insulating structure. The heat insulation structure can isolate the heat transfer between the heat exchange plate 220 and the wiring harness board assembly, and avoid the heat transfer to the wiring harness board assembly to influence the performance of the wiring harness board assembly. Illustratively, the support structure 240 has a thermal conductivity of 0.01-0.2W/m.K. More specifically, the support structure 240 has a thermal conductivity of 0.02-0.05W/m.K. Such as 0.02W/mK, 0.03W/mK, 0.04W/mK, and 05W/mK.

When the support structure 240 is provided, its correspondence with the heat exchanger plate 220 may adopt different correspondences. As an alternative, one heat exchanger plate 220 may correspond to one support structure 240, or one heat exchanger plate 220 may correspond to a plurality of support structures 240, i.e. one heat exchanger plate 220 corresponds to two or more support structures 240.

Referring to fig. 4, when one heat exchange plate 220 corresponds to one support structure 240, the length direction of the support structure 240 is arranged along the length direction of the heat exchange plate 220 in the arrangement direction of a row of cells 210, and the cross section of the support structure 240 may be in various shapes such as a rectangle, a triangle, a trapezoid, an arc, etc. Preferably, the support structure 240 has a narrow top and a wide bottom (e.g., a trapezoid, an arc, a triangle) so that the support structure 240 can be easily inserted between two rows of the batteries 210 during assembly.

In addition, the length of the support structure 240 may be greater than, less than, or equal to the length of the heat exchange plate 220 in the length direction.

When one heat exchange plate 220 corresponds to a plurality of support structures 240, the plurality of support structures 240 are arranged in a row at intervals, and a row of support structures 240 is parallel to a row of cells 210. In addition, the cross-section for each support structure 240 may be a different shape, such as rectangular, triangular, trapezoidal, arcuate, etc. The support structures 240 may be shaped differently for each support structure, such as a bar, a column, a mesa, and the like.

With continued reference to fig. 2 and 4, when the battery pack 200 includes a plurality of rows of the batteries 210, the number of the corresponding heat exchange plates 220 is also plural. At this time, when each heat exchange plate 220 is supported by the plurality of support structures 240 while the support structures 240 are provided, the arrangement positions of the support structures 240 corresponding to the adjacent heat exchange plates 220 are arranged in a staggered manner. I.e., the support structures 240 in adjacent rows of support structures 240 are positioned in an offset manner. Describing in projection, the staggered position of adjacent rows of support structures 240 means that a plurality of support structures 240 are not completely coincident along a vertical projection on a large side of the heat exchanger plate 220. Illustratively, the surface on which the cells 210 are disposed perpendicular to the support plate is a reference plane, and the perpendicular projections of adjacent rows of support structures 240 on the reference plane do not overlap. When the arrangement mode is adopted, on one hand, the overall structural strength of the battery pack 200 is ensured, and the production cost of the wiring harness board assembly is reduced; on the other hand, an accommodating space is provided for other components, such as other wires of the wiring harness board assembly.

As an alternative, when the support structures 240 are provided, each support structure 240 isolates the explosion-proof valves of the batteries 210 on both sides of the corresponding heat exchange plate 220. I.e. the support structure 240 is arranged at least partly coinciding with the perpendicular projection of the explosion-proof valve of the adjacent cell in the plane of the large side of the heat exchanger plate 220.

Illustratively, when each heat exchange plate 220 corresponds to one support structure 240, the support structures 240 may isolate the explosion-proof valves of the cells 210 of the adjacent rows due to the insertion of the support structures 240 into the gaps between the cells 210 of the adjacent rows. When each heat exchange plate 220 corresponds to a plurality of support structures 240, the plurality of support structures 240 isolate the explosion-proof valves of the cells 210 of the adjacent rows when the plurality of support structures 240 are spaced apart. For example, each support structure 240 may isolate the explosion-proof valves of two batteries 210 in adjacent rows, each support structure 240 may isolate the explosion-proof valves of four batteries 210 in adjacent rows, or isolate different numbers of explosion-proof valves, such as six or eight, and the specific configuration may be set as required. When the above structure is adopted, on the one hand, thermal runaway of the battery 210 can be prevented from being ejected toward the adjacent battery 210, and on the other hand, when the explosion-proof valve is blown open, the structural strength of the wire harness board assembly at the position corresponding to the explosion-proof valve is improved through the support structure 240, and the wire harness board assembly is prevented from being deformed as a whole.

Referring to fig. 5, fig. 5 is a modified structure based on the battery pack shown in fig. 3. Some of the reference numbers in fig. 5 may refer to the same reference numbers in fig. 3. In the structure shown in fig. 5, whether one heat exchange plate 220 corresponds to one support structure 250 or a plurality of support structures 250, the support structure 250 may be a convex structure. The bosses of the support structure 250 support the corresponding heat exchanger plates 220; the stepped surfaces of the support structures 250 on both sides of the bosses support the batteries 210 on both sides of the corresponding heat exchange plates 220. Illustratively, the support structure 250 has a cross-section in a shape of a Chinese character 'tu', and the step surfaces of the support structure 250 are located at two sides of the protruding portion. And when the battery 210 is inverted, the pole is connected to the bus bar of the wiring harness board assembly, so that a gap is formed between the bottom surface of the battery 210 and the wiring harness board assembly, the structures of the support structure 250 located at both sides of the protruding portion are inserted into the gap between the wiring harness board assembly and the bottom surface of the battery 210, and the stepped surface of the support structure 250 supports the bottom surface of the battery 210, thereby preventing the pole from bearing the weight of the battery 210 and improving the safety of the battery 210.

It should be understood that, in the above example, the description is made taking the battery 210 as an example. The plate-shaped support member 230 may be a bottom plate of a case of the battery pack when the battery 210 is upright, or a support plate separately provided. In addition, when the supporting structure 240 is disposed on the heat exchange plate 220, the supporting structure 240 may be a protrusion structure extending from one surface of the heat exchange plate 220 facing the plate-shaped supporting assembly 230, and the effect of supporting the heat exchange plate 220 may also be achieved. When the support structure 240 is disposed on the heat exchange plate 220, reference may be made to the above-mentioned disposing of the support structure 240 on the plate-shaped support assembly 230, which will not be described in detail herein.

In addition, the heat transfer board should be understood as the structure that carries out heat exchange to the battery, and the heat transfer board can heat up or the structure of cooling to the battery promptly, and the heat transfer board is inside can set up liquid circulation passageway or phase change material or inside can also be for the cavity can also transmit through the forced air cooling, and in addition, the heat transfer board can be for the surface be planar platelike structure, and the surface also can be the non-plane, and the surface of heat transfer board also can set up other special structures such as arch or recess, and the concrete structure of heat transfer board is not limited to here, and it is no longer repeated in detail here.

With continued reference to fig. 1, the present embodiment also provides a battery pack including a case 100 and a battery pack 200 provided in any one of the cases 100. In the above scheme, the heat exchange plate 220 is supported by the support structure 240 disposed between the plate-shaped support assembly 230 and the heat exchange plate 220, so that the stability of the heat exchange plate 220 is improved, and the heat dissipation effect of the battery 210 is further improved.

The embodiment of the application also provides an automobile which comprises an automobile body and the battery pack 200 or the battery pack arranged on the automobile body. In the above scheme, the heat exchange plate 220 is supported by the support structure 240 disposed between the plate-shaped support assembly 230 and the heat exchange plate 220, so that the stability of the heat exchange plate 220 is improved, and the heat dissipation effect of the battery 210 is further improved.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on operational states of the present application, and are only used for convenience in describing and simplifying the present application, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise explicitly stated or limited. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The present application has been described above with reference to preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the present application can be subjected to various substitutions and improvements, and the substitutions and the improvements are all within the protection scope of the present application.

Claims

1. A battery pack, comprising: the battery heat exchanger comprises a heat exchange plate and a battery arranged on at least one side of the large side surface of the heat exchange plate; the battery is fixedly connected with the heat exchange plate, and the heat exchange plate also comprises a plate-shaped support assembly for supporting the battery; along the height direction of the battery, the plate-shaped supporting component is positioned below the battery and fixedly connected with the battery;

2. The battery according to claim 1, wherein one end of the support structure abuts against the heat exchanger plate and the other end of the support structure is fixedly connected to the plate shaped support assembly.

3. The battery pack according to claim 1, wherein the support structure is integral with the heat exchange plate or fixedly connected to the heat exchange plate;

the support structure abuts against the plate-shaped support assembly.

4. The battery pack according to claim 1, wherein the plate-shaped support member is a wire harness plate member; and the polar columns of the batteries face the wiring harness board assembly and are electrically connected with the bus bar of the wiring harness board assembly in a conducting manner.

5. The battery pack of claim 4, wherein the support structure is disposed on the wiring harness panel assembly.

6. The battery pack of claim 5, wherein the support structure is a unitary structure with the wiring harness panel assembly.

7. The battery according to any one of claims 1 to 6, wherein the heat exchange plate corresponds to a plurality of the support structures, and the plurality of the support structures are arranged along a length direction of the corresponding heat exchange plate.

8. The battery pack according to claim 7, wherein the number of the heat exchange plates is plural, and the support structures corresponding to at least two adjacent heat exchange plates are arranged in staggered positions.

9. The battery pack of claim 1, wherein the support structure isolates the explosion-proof valves of the cells on both sides of the corresponding heat exchange plate.

10. The battery according to claim 9, wherein the support structure is arranged at least partially coinciding with a perpendicular projection of the explosion-proof valve of the adjacent cell in the plane of the large side of the heat exchanger plate.

11. The battery according to any one of claims 1 to 6, wherein the large side of the heat exchange plate is disposed in contact with the large side of the battery.

12. Battery according to any of claims 1-6, characterised in that the support structure at least partly coincides with the perpendicular projection of the battery in the plane of the large side of the heat exchanger plate.

13. The battery according to any of claims 1-6, characterized in that the modulus of elasticity of the support structure is between 20000-50000MPa, and an insulating structure and/or a cushioning structure is provided between the support structure and the heat exchanger plate.

14. The battery of claim 13, wherein the support structure has a modulus of elasticity of 2 to 5000MPa.

15. The battery pack according to any one of claims 1 to 6, wherein the support structure is insulated from the heat exchange plate, and a buffer structure is provided between the heat exchange plate and the support structure.

16. The battery according to any one of claims 1 to 6, wherein the support structure has a thermal conductivity of 0.01-0.2W/m-K.

17. The battery of claim 16, wherein said support structure has a thermal conductivity of 0.02-0.05W/m-K.

18. The battery pack according to any one of claims 1 to 6, wherein the heat exchange plate does not protrude at least one end in the height direction of the battery.

19. The battery according to claim 18, wherein the support structure is a herringbone structure, and the bosses of the support structure support the corresponding heat exchange plates; the step surfaces of the supporting structure, which are positioned on the two sides of the boss, support the batteries positioned on the two sides of the corresponding heat exchange plate.

20. A battery pack comprising a case and the battery pack according to any one of claims 1 to 19 provided in the case.