CN220585351U

CN220585351U - Battery module and battery

Info

Publication number: CN220585351U
Application number: CN202322271913.4U
Authority: CN
Inventors: 杨秋立; 马姜浩; 占杨娇
Original assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Current assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Priority date: 2023-08-23
Filing date: 2023-08-23
Publication date: 2024-03-12
Anticipated expiration: 2033-08-23

Abstract

The utility model provides a battery module and a battery, and relates to the technical field of batteries. The battery module comprises a battery cell group, two end plates, a plurality of pressing strips and at least one heat dissipation piece. The battery cell group comprises a plurality of battery cells, and the battery cells are stacked along the thickness direction of the battery cells. The two end plates are respectively arranged at two ends of the battery cell group along the thickness direction of the battery cell. The two ends of any one pressing strip are detachably connected to the two end plates respectively and are pressed on edges of the battery cell group extending along the thickness direction of the battery cells. Any heat sink is clamped between two adjacent cells. The battery provided by the utility model adopts the battery module. The battery module and the battery provided by the utility model can solve the technical problems of low reliability and difficult maintenance of the energy storage module in the prior art.

Description

Battery module and battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module and a battery.

Background

At present, under the support of the requirement of configuration energy storage in the development scheme of new energy projects in various places, the positive pole speed of the energy storage market demand expands, and the value of energy storage is obvious.

The mode of forming groups at present is through the module stack, through the end plate extrusion, uses the ribbon to encircle at last and fixes, and this kind of mode of forming groups has naturally saved the cost, but, the reliability of module also can reduce, and the relaxation ageing of ribbon all can exert an influence to the reliability of module. In addition, the module used in the existing energy storage market cannot be modified after being basically molded, and because a large number of strong fixing processes such as welding and riveting are used, the subsequent repair and maintenance are difficult.

Disclosure of Invention

The utility model aims to provide a battery module which can solve the technical problems of low reliability and difficult maintenance of an energy storage module in the prior art.

The utility model also aims to provide a battery which can solve the technical problems of low reliability and difficult maintenance of the energy storage module in the prior art.

Embodiments of the utility model may be implemented as follows:

an embodiment of the present utility model provides a battery module including:

the battery cell group comprises a plurality of battery cells, and the battery cells are stacked along the thickness direction of the battery cells;

the two end plates are respectively arranged at two ends of the battery cell group along the thickness direction of the battery cell;

the two ends of any one of the pressing strips are detachably connected with the two end plates respectively and are pressed on edges of the battery cell group extending along the thickness direction of the battery cells; the method comprises the steps of,

at least one heat dissipation piece, any one heat dissipation piece is clamped between two adjacent battery cells.

Optionally, the pressing strip includes a first pressing part and a second pressing part with included angles, and the first pressing part and the second pressing part are respectively matched with two adjacent outer side surfaces of the battery cell so as to press and hold the edges of the battery cell group;

the first pressing part and the second pressing part are respectively matched with two adjacent outer side surfaces on the end plate, and at least one of the first pressing part and the second pressing part is detachably connected with the end plate.

Optionally, a first matching groove and a second matching groove are respectively formed on two adjacent outer side surfaces on the end plate, the first pressing part is arranged inside the first matching groove, and the second pressing part is arranged inside the second matching groove.

Optionally, the heat dissipation element comprises a heat dissipation main body and a wiring part; the heat dissipation main body is clamped between two adjacent battery cells; the wiring part is arranged on one side of the radiating main body and is exposed from the top surface of the battery cell; and the wiring part is provided with a wiring groove which is used for wiring the wire harness of the battery cell.

Optionally, the wire portion is opposite to one side of the wire groove and is attached to the top surfaces of the electric cores, and the wire portion is attached to the top surfaces of the two electric cores adjacent to the heat dissipation main body.

Optionally, the heat dissipation element further comprises a battery cell limiting element; the battery cell limiting piece is arranged on one side of the radiating main body and is exposed from the side face of the battery cell; the battery cell limiting piece is arranged in a fitting mode with the side faces of the two battery cells adjacent to the radiating main body.

Optionally, the two opposite sides of the heat dissipation part are both provided with the electric core limiting parts, so that the two opposite sides of the electric core are both provided with the electric core limiting parts.

Optionally, the heat dissipation main body includes an outer frame, a first heat dissipation component and a second heat dissipation component, where the first heat dissipation component and the second heat dissipation component are both disposed inside the outer frame, and the first heat dissipation component and the second heat dissipation component are respectively attached to two adjacent electric cores; the first heat dissipation assembly and the second heat dissipation assembly are composed of a plurality of elastic heat dissipation ribs arranged at intervals.

Optionally, the first heat dissipation component and the second heat dissipation component are spaced, and the heat dissipation main body further comprises mica paper, and the mica paper is arranged between the first heat dissipation component and the second heat dissipation component.

A battery comprises the battery module. The battery module includes:

The battery module and the battery provided by the utility model have the beneficial effects compared with the prior art that:

clamping a plurality of cells in the cell group through two end plates to provide a limiting effect to the plurality of cells from the thickness direction of the plurality of cells; meanwhile, the plurality of pressing strips are respectively assembled on the edges of the battery cell group so as to provide a limiting effect for the plurality of battery cells, so that the stability of the assembly of the plurality of battery cells can be improved, and the overall reliability of the battery module is improved. And because a plurality of layering pass through detachable mode and connect on the end plate, under the circumstances that needs to maintain battery module in the follow-up, can directly tear down the layering and just can accomplish battery module's dismantlement, improved battery module maintenance's convenience. Therefore, the battery module and the battery can solve the technical problems of lower reliability and difficult maintenance of the energy storage module in the prior art.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

fig. 2 is an exploded view of a battery module according to an embodiment of the present application;

FIG. 3 is a schematic view of a partial structure of a molding provided in an embodiment of the present application;

FIG. 4 is an enlarged schematic view of FIG. 2A;

fig. 5 is a schematic structural diagram of a heat dissipation element provided in an embodiment of the present application;

fig. 6 is an enlarged schematic view of the structure at B in fig. 5.

Icon: 10-a battery module; 11-bara; 100-cell groups; 110-cell; 111-large surface; 200-end plates; 210-a first mating groove; 220-a second mating groove; 300-layering; 310-a first press-holding part; 320-a second press-holding portion; 400-heat sink; 410-a heat dissipating body; 411-outer border; 412-a first heat sink assembly; 413-a second heat sink assembly; 401-elastic heat dissipation ribs; 420-a wiring part; 421-wiring slots; 430-cell limit.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.

The embodiment of the application provides a battery which can be used for storing electric energy, and the battery can be used for conveying the electric energy to electric equipment under the condition that the battery is connected with the electric equipment. The battery provided by the embodiment of the application can improve the technical problems of low reliability and difficult maintenance of the energy storage module in the prior art.

Referring to fig. 1, the battery may include at least one battery module 10, where the battery module 10 is configured to store electrical energy and also to deliver electrical energy to an electrical device when the battery is connected to the electrical device. In addition, the battery may further include a housing, a battery management module, and the like, which are not described herein. In the embodiment of the application, the battery module 10 can improve the technical problems of low reliability and difficult maintenance of the energy storage module in the prior art, so that the battery adopting the battery module 10 can improve the technical problems of low reliability and difficult maintenance of the energy storage module in the prior art.

In the present embodiment, referring to fig. 1 and 2 in combination, a battery module 10 includes a battery cell assembly 100, two end plates 200, a plurality of compression beads 300, and at least one heat sink 400. The battery cell group 100 includes a plurality of battery cells 110, and the plurality of battery cells 110 are stacked along a thickness direction of the battery cells 110. The two end plates 200 are respectively disposed at both ends of the cell stack 100 in the thickness direction of the cells 110. The two ends of any one of the pressing bars 300 are detachably connected to the two end plates 200, respectively, and are pressed against edges of the cell group 100 extending in the thickness direction of the cells 110. In general, the number of the pressing bars 300 is four, which correspond to edges formed on the periphery of the battery cell assembly 100 along the thickness direction of the battery cells 110, so as to provide reinforcement to the battery cell assembly 100 from the periphery of the battery cell assembly 100. Any heat sink 400 is sandwiched between two adjacent cells 110.

In fig. 1, the direction indicated by the X arrow is the thickness direction of the battery cell 110.

As described above, the plurality of cells 110 in the cell group 100 are clamped by the two end plates 200 to provide the restraining effect to the plurality of cells 110 from the thickness direction of the plurality of cells 110; meanwhile, the plurality of pressing strips 300 are respectively assembled on the edges of the battery cell group 100 to provide a limiting function for the plurality of battery cells 110, so that the stability of assembling the plurality of battery cells 110 can be improved, and the overall reliability of the battery module 10 can be improved. In addition, since the plurality of pressing bars 300 are detachably connected to the end plate 200, the battery module 10 can be detached by directly detaching the pressing bars 300 under the condition that the battery module 10 needs to be maintained later, and the convenience of maintenance of the battery module 10 is improved. Therefore, the battery module 10 and the battery can solve the technical problems of low reliability and difficult maintenance of the energy storage module in the prior art.

It is to be noted that the strapping tape used in the prior art may be subject to fatigue fracture after long-term use, and in addition, fatigue fracture of the strapping tape may be further accelerated after repeated disassembly and assembly of the battery module 10, thereby shortening the service life of the strapping tape. However, the bead 300 provided in the embodiments of the present application is not prone to fatigue fracture; also, repeated disassembly and assembly of the bead 300 does not affect the overall strength of the bead 300 during maintenance, and sufficient reinforcement can be provided even after multiple assembly and disassembly.

Alternatively, referring to fig. 2 and 3 in combination, the pressing strip 300 includes a first pressing portion 310 and a second pressing portion 320 that form an included angle, and the first pressing portion 310 and the second pressing portion 320 respectively cooperate with two adjacent outer sides of the battery cell 110 to press and hold the edges of the battery cell group 100. The cell 110 has two large faces 111 in the thickness direction thereof, and four outer side faces surrounding the large faces 111; the first pressing part 310 and the second pressing part 320 are respectively attached to the sides of the adjacent two outer sides of the battery cell 110, that is, the first pressing part 310 and the second pressing part 320 are assembled on the edges of the adjacent two outer sides of the battery cell 110, so as to ensure that the pressing bar 300 and the battery cell 110 are stably matched. In addition, the first pressing portion 310 and the second pressing portion 320 are respectively pressed on different outer side surfaces of the battery cell 110, so that restriction effects in different directions can be provided for the battery cell 110, and under the condition that a plurality of pressing strips 300 are arranged, restriction effects in various directions can be provided for the battery cell 110 from a plurality of positions, thereby achieving the purpose of improving the overall stability of the battery cell group 100.

In addition, the first and second pressing parts 310 and 320 are respectively engaged with two adjacent outer side surfaces of the end plate 200, and at least one of the first and second pressing parts 310 and 320 is detachably connected to the end plate 200. In this embodiment, a through hole is formed on the first pressing portion 310 for the connection member to pass through; in the case that the connection member is connected to the end plate 200 through the through hole of the first pressing part 310, the connection of the first pressing part 310 and the end plate 200 is achieved; at the same time, the second press-holding portion 320 is engaged with the adjacent side surface of the end plate 200. Of course, in other embodiments of the present application, the first pressing portion 310 and the second pressing portion 320 may be detachably connected to the end plate 200, in other words, a through hole may be formed in the second pressing portion 320 for a connecting piece to pass through, so as to achieve the detachable connection between the second pressing portion 320 and the end plate 200.

Alternatively, in the present embodiment, referring to fig. 3 and 4, two adjacent outer sides of the end plate 200 are respectively provided with a first mating groove 210 and a second mating groove 220, the first pressing portion 310 is disposed inside the first mating groove 210, and the second pressing portion 320 is disposed inside the second mating groove 220. Wherein, can provide positioning effect and spacing effect to first pressure portion 310 through first cooperation groove 210, not only can make things convenient for first pressure portion 310 to install on end plate 200 fast, can also keep first pressure portion 310's stability in the in-process of loading into the connecting piece, ensure assembly precision. Similarly, the second pressing part 320 can be provided with a positioning function and a limiting function through the second matching groove 220, so that the second pressing part 320 can be conveniently and rapidly mounted on the end plate 200, the stability of the second pressing part 320 can be maintained in the process of connecting and reinforcing the pressing strip 300 and the end plate 200, and the assembly precision is improved.

It should be noted that, in order to facilitate the connection and the fitting of the first pressing portion 310 to the end plate 200, an assembly hole corresponding to the through hole of the first pressing portion 310 is formed on the inner wall of the first fitting groove 210, and the connecting member may pass through the through hole of the first pressing portion 310 and then be fitted to the assembly hole, so as to achieve the fitting of the first pressing portion 310 and the end plate 200. Similarly, in the case that the end portion of the second pressing portion 320 is provided with a through hole, an assembly hole may be formed in the inner wall of the second fitting groove 220, so as to facilitate the fitting between the second pressing portion 320 and the end plate 200 through the fitting between the connecting member and the assembly hole. Optionally, the assembly holes may be threaded holes, and the corresponding connecting pieces are bolts; of course, in other embodiments, the mounting holes may be other types of holes or slots, for example, the mounting holes may be rivet holes and the connectors may be rivets or the like.

It should be appreciated that in other embodiments of the present application, the provision of one of the first and second mating grooves 210, 220 may be eliminated, or the provision of both the first and second mating grooves 210, 220 may be eliminated.

In the present embodiment, referring to fig. 5 and 6 in combination, the heat sink 400 includes a heat sink body 410 and a trace portion 420; the heat dissipation body 410 is clamped between two adjacent cells 110; the trace portion 420 is disposed on one side of the heat dissipation body 410 and is exposed from the top surface of the battery cell 110; the wiring portion 420 is provided with a wiring groove 421, and the wiring groove 421 is used for fixing the wire harness of the battery module 10.

The wiring part 420 is arranged on the heat dissipation body 410, so that the positioning function can be provided for the assembly of the heat dissipation body 410 through the wiring part 420, the heat dissipation body 410 can be ensured to be accurately assembled to a designated position, and the wiring harness of the battery cell 110 can be accommodated through the wiring groove 421 on the wiring part 420. It is noted that, after the wire harness of the battery cell 110 is clamped into the wire harness groove 421 along the radial direction thereof, the wire harness groove 421 can provide a limiting function for the wire harness, so as to fix the wire harness; the wire harness isolation board fittings in the prior art can be omitted, and the cost is reduced.

In addition, in the present embodiment, one side of the trace portion 420 opposite to the trace groove 421 is attached to the top surfaces of the battery cells 110, and the trace portion 420 is attached to the top surfaces of the two battery cells 110 adjacent to the heat dissipation body 410. That is, the routing portion 420 not only can provide fastening function for the wire harness of the battery cell 110, but also can provide positioning function for the heat dissipation body 410 by attaching the routing portion 420 to the battery cell 110, so as to ensure that the heat dissipation body 410 is disposed at a designated position between adjacent battery cells 110, and further ensure that the heat dissipation body 410 can provide efficient heat dissipation for two adjacent battery cells 110.

Under the condition that the wire-routing part 420 is attached to the top surface of the battery cell 110, the arrangement of the wire-routing part 420 on the top surface of the battery cell 110 can be facilitated, and then the wire harness of the battery cell 110 is conveniently matched with the wire-routing part 420; the thickness of the routing portion 420 is relatively small, and thus the wire harness can be generally regarded as being attached to the top surface of the battery cell 110 to complete routing. Further, a certain limiting effect can be provided to the heat dissipation body 410 through the cooperation of the wiring portion 420 and the top surface of the battery cell 110, so as to provide a limiting effect to the heat dissipation body 410, ensure the assembling posture of the heat dissipation body 410, and facilitate the heat dissipation body 410 to provide an efficient heat dissipation effect to the battery cell 110.

In addition, in the present embodiment, the battery module 10 further includes a tab 11, and the tab 11 is connected to the terminal of the battery cell 110 through a bolt. Due to the fact that the tabs 11 are connected with the poles of the battery cells 110 through bolts, connection between the tabs 11 and the poles of the battery cells 110 is relieved in the process of disassembling the battery module 10, disassembly of the tabs 11 and the battery cells 110 can be achieved, and disassembly of the battery module 10 is convenient to achieve.

Optionally, in an embodiment of the present application, the heat sink 400 further includes a cell limiter 430; the battery cell limiting member 430 is disposed at one side of the heat dissipation body 410 and is exposed from the side surface of the battery cell 110; the cell limiting member 430 is attached to the side surfaces of the two cells 110 adjacent to the heat dissipating body 410. The electric core limiting piece 430 and the wiring part 420 are respectively arranged on different side surfaces of the heat dissipation main body 410, and under the condition that the electric core limiting piece 430 is attached to the outer side surface of the electric core 110, a limiting effect can be provided for the heat dissipation main body 410 from multiple directions, so that the whole assembly precision of the heat dissipation main body 410 is further ensured; meanwhile, through the combined action of the cell limiting member 430 and the wire routing portion 420, a limiting effect can be provided to the heat dissipating body 410 at the same time, so that the stability of the heat dissipating body 410 can be improved.

It should be appreciated that in other embodiments of the present application, the placement of the cell limiter 430 may be eliminated.

Further, in the present embodiment, the two opposite sides of the heat sink 400 are provided with the cell limiting members 430, so that the two opposite sides of the battery cell 110 are provided with the cell limiting members 430. The battery cell limiting members 430 on opposite sides of the heat dissipating body 410 provide a limiting effect to the heat dissipating body 410, so that the assembly stability of the heat dissipating body 410 can be further improved.

In the present embodiment, the heat dissipating body 410 includes an outer frame 411, a first heat dissipating component 412, and a second heat dissipating component 413. The first heat dissipation component 412 and the second heat dissipation component 413 are both disposed inside the outer frame 411, and the first heat dissipation component 412 and the second heat dissipation component 413 are respectively attached to the two adjacent battery cells 110; the first heat dissipation assembly 412 and the second heat dissipation assembly 413 are each composed of a plurality of elastic heat dissipation ribs 401 disposed at intervals.

It should be noted that, the first heat dissipation component 412 and the second heat dissipation component 413 are both composed of a plurality of elastic heat dissipation ribs 401 spaced apart, so that a plurality of grooves are formed on both sides of the heat dissipation body 410, which can increase the contact area between the large surface 111 of the battery cell 110 and air, and improve the heat dissipation capability of the battery cell 110; in addition, the elastic heat dissipation ribs 401 can absorb heat generated by the large surface 111 of the battery cell 110, so as to promote heat dissipation of the battery cell 110, and facilitate heat dissipation of the battery cell 110.

In addition, the elastic heat dissipation ribs 401 have certain elasticity, and under the condition that the large surface 111 of the battery cell 110 expands, an expansion space can be provided for the expansion of the battery cell 110 through the elastic action of the elastic heat dissipation ribs 401, so that the service life of the battery cell 110 is prolonged. In addition, even after the cell 110 is expanded, the plurality of elastic heat dissipation ribs 401 can be fully attached to the large surface 111 of the cell 110 due to elastic deformation, thereby providing an efficient heat dissipation effect to the cell 110.

In the present embodiment, the first heat dissipating component 412 and the second heat dissipating component 413 are spaced apart, and the heat dissipating body 410 further includes mica paper, and the mica paper is disposed between the first heat dissipating component 412 and the second heat dissipating component 413. The mica paper is arranged between the first heat dissipation assembly 412 and the second heat dissipation assembly 413, so that the occurrence of thermal runaway of the battery cell 110 can be prevented, and the overall safety coefficient of the battery module 10 is improved.

In summary, the plurality of cells 110 in the cell group 100 are clamped by the two end plates 200 to provide a restraining effect to the plurality of cells 110 from the thickness direction of the plurality of cells 110; meanwhile, the plurality of pressing strips 300 are respectively assembled on the edges of the battery cell group 100 to provide a limiting function for the plurality of battery cells 110, so that the stability of assembling the plurality of battery cells 110 can be improved, and the overall reliability of the battery module 10 can be improved. In addition, since the plurality of pressing bars 300 are detachably connected to the end plate 200, the battery module 10 can be detached by directly detaching the pressing bars 300 under the condition that the battery module 10 needs to be maintained later, and the convenience of maintenance of the battery module 10 is improved. Therefore, the battery module 10 and the battery can solve the technical problems of low reliability and difficult maintenance of the energy storage module in the prior art. In addition, the first heat dissipation component 412 and the second heat dissipation component 413 are composed of a plurality of elastic heat dissipation ribs 401 at intervals, so that a plurality of grooves are formed on two sides of the heat dissipation main body 410, the contact area between the large surface 111 of the battery cell 110 and air can be increased, and the heat dissipation capacity of the battery cell 110 is improved; in addition, the elastic heat dissipation ribs 401 can absorb heat generated by the large surface 111 of the battery cell 110, so as to promote heat dissipation of the battery cell 110, and facilitate heat dissipation of the battery cell 110. Meanwhile, the elastic heat dissipation ribs 401 have certain elasticity, and under the condition that the large surface 111 of the battery cell 110 expands, an expansion space can be provided for the expansion of the battery cell 110 through the elastic action of the elastic heat dissipation ribs 401, so that the service life of the battery cell 110 is prolonged.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A battery module, comprising:

the battery cell group (100) comprises a plurality of battery cells (110), and the battery cells (110) are stacked along the thickness direction of the battery cells (110);

two end plates (200) respectively arranged at two ends of the battery cell group (100) along the thickness direction of the battery cells (110);

a plurality of pressing strips (300), wherein two ends of any one pressing strip (300) are respectively detachably connected with two end plates (200) and are pressed and held on edges of the battery cell group (100) extending along the thickness direction of the battery cells (110); the method comprises the steps of,

at least one heat sink (400), any one of the heat sinks (400) being clamped between two adjacent cells (110).

2. The battery module according to claim 1, wherein the pressing bar (300) comprises a first pressing part (310) and a second pressing part (320) which form an included angle, and the first pressing part (310) and the second pressing part (320) are respectively matched with two outer side surfaces adjacent to the battery cell (110) so as to press and hold the edges of the battery cell group (100);

the first pressing part (310) and the second pressing part (320) are respectively matched with two adjacent outer side surfaces on the end plate (200), and at least one of the first pressing part (310) and the second pressing part (320) is detachably connected with the end plate (200).

3. The battery module according to claim 2, wherein a first mating groove (210) and a second mating groove are respectively formed on two adjacent outer sides of the end plate (200), the end of the first pressing part (310) is disposed in the first mating groove (210), and the end of the second pressing part (320) is disposed in the second mating groove.

4. The battery module according to claim 1, wherein the heat sink (400) includes a heat sink body (410) and a wire trace (420); the heat dissipation body (410) is clamped between two adjacent battery cells (110); the wire routing part (420) is arranged on one side of the heat dissipation main body (410), and the upper surface of the wire routing part (420) is higher than the top surface of the battery cell (110); the wiring part (420) is provided with a wiring groove (421), and the wiring groove (421) is used for fixing the wire harness of the battery module (10).

5. The battery module according to claim 4, wherein one side of the wire routing portion (420) opposite to the wire routing groove (421) is attached to the top surfaces of the battery cells (110), and the wire routing portion (420) is attached to the top surfaces of the two battery cells (110) adjacent to the heat dissipation main body (410).

6. The battery module according to claim 4, wherein the heat sink (400) further comprises a cell stopper (430); the battery cell limiting piece (430) is arranged on one side of the radiating main body (410) and is exposed from the side face of the battery cell (110); the battery cell limiting piece (430) is attached to the side surfaces of the two battery cells (110) adjacent to the heat dissipation main body (410).

7. The battery module according to claim 6, wherein the cell stoppers (430) are provided on opposite sides of the heat sink (400) such that the cell stoppers (430) are provided on opposite sides of the cell (110).

8. The battery module according to claim 4, wherein the heat dissipation body (410) includes an outer frame (411), a first heat dissipation assembly (412) and a second heat dissipation assembly (413), the first heat dissipation assembly (412) and the second heat dissipation assembly (413) are both disposed inside the outer frame (411), and the first heat dissipation assembly (412) and the second heat dissipation assembly (413) are respectively attached to two adjacent battery cells (110); the first heat dissipation assembly (412) and the second heat dissipation assembly (413) are composed of a plurality of elastic heat dissipation ribs (401) arranged at intervals.

9. The battery module of claim 8, wherein the first heat sink member (412) and the second heat sink member (413) are spaced apart, and the heat sink body (410) further comprises mica paper disposed between the first heat sink member (412) and the second heat sink member (413).

10. The battery module of claim 1, further comprising a tab that is bolted to a post of the cell.

11. A battery, characterized by comprising a battery module (10) according to any one of claims 1-10.