Positioning piece, battery module and electric equipment

Abstract

The utility model provides a positioning piece, a battery module and electric equipment, and relates to the technical field of batteries, the positioning piece is used for positioning a battery cell, and the positioning piece comprises a positioning piece body and a plurality of partition plates arranged on the same side of the positioning piece body. The multiple partition plates are distributed at intervals in the first direction, so that a first positioning part is formed between every two adjacent partition plates, and the first positioning parts are used for correspondingly supporting the battery cells, so that a preset gap is formed between every two adjacent battery cells. According to the positioning piece disclosed by the embodiment of the utility model, the distance between the echelon battery cells is controlled through the first positioning part on the positioning piece body, so that the battery modules formed by assembling the echelon battery cells are consistent in size, and standardized assembly is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a positioning member, a battery module, and an electrical device. Background Art

[0002] As the power source of transportation tools, power batteries are widely used in new energy vehicles, such as battery packs. A battery pack is an integral formed by combining one or more battery modules. A battery module connects multiple battery cells into an integral to provide a larger electrical energy storage capacity and output power. Among them, a battery cell is the basic unit of a battery pack, which can store and release electrical energy. When the capacity of the battery pack drops to about 80%, it can be replaced. At this time, the replaced battery pack still has high utilization value. Conducting corresponding cascade utilization of the replaced battery pack can not only greatly reduce environmental pollution, but also avoid resource waste to the greatest extent and maximize economic benefits.

[0003] In the related art, battery cells are arranged in sequence, connected in series and parallel, and encapsulated using a tray to form a battery module. These battery modules can be installed on the chassis of a vehicle to provide electrical energy.

[0004] However, since the middle part of a battery cell bulges along the thickness direction after long-term use, the dimensional tolerance of the total thickness of the cascade battery cell is relatively large compared to a new battery cell. Using the above installation method, due to uneven thickness, the sizes of the assembled battery modules are inconsistent, which is not conducive to standardized assembly. Summary of the Utility Model

[0005] Based on this, the present application provides a positioning member, a battery module, and an electrical device to solve the problem that the sizes of the assembled battery modules are inconsistent due to uneven thickness of old battery cells during cascade utilization of existing battery modules.

[0006] In a first aspect, the present application provides a positioning member for positioning a battery cell. The positioning member includes a positioning member body and a plurality of partition plates arranged on the same side of the positioning member body;

[0007] The plurality of partition plates are spaced apart along a first direction, so that a first positioning portion is formed between two adjacent partition plates. The first positioning portion is used to correspondingly support the battery cell, so that a preset gap is provided between two adjacent battery cells.

[0008] In a possible implementation manner, the side surface of the partition plate facing another partition plate is an inclined surface. The inclined surface is used to provide guidance for the battery cell to be inserted into the first positioning portion, and a part of the inclined surface is used to abut against the battery cell.

[0009] In a possible implementation manner, the two inclined surfaces on the same partition plate are symmetrically arranged.

[0010] In a second aspect, the present application further provides a battery module, comprising a plurality of battery cells and at least one positioning member provided in the first aspect, wherein each battery cell is correspondingly arranged on each first positioning portion.

[0011] In a possible implementation, a tray assembly is further included, wherein the tray assembly has an installation cavity, and the battery cell and the positioning member are arranged in the installation cavity.

[0012] In a possible implementation, the tray assembly includes a tray body and a cover body connected to the tray body, and the cover body and the tray body together enclose a mounting cavity.

[0013] In a possible implementation manner, at least one positioning member is disposed on at least one of the tray body and the cover body.

[0014] In a possible implementation, the number of the positioning members is at least two, at least one positioning member is disposed on the tray body, and at least one positioning member is disposed on a side of the battery cell away from the tray body.

[0015] In a possible implementation, the tray body has at least one mounting groove, and the positioning member is correspondingly arranged on the mounting groove.

[0016] In a possible implementation, two stoppers are provided on the tray body;

[0017] The two stoppers are correspondingly arranged at two ends of the positioning member to limit the movement of each battery cell located in the positioning member.

[0018] In a possible implementation, the stopper is a hollow structure, and reinforcing ribs are provided inside the stopper.

[0019] In a possible implementation, a plurality of connecting sheets are further included, and the battery cells are grouped in pairs in sequence, and the two battery cells in a group are electrically connected via the connecting sheets.

[0020] In a third aspect, the present application further provides an electrical device, comprising a device body and a battery module provided in the second aspect and arranged on the device body.

[0021] The present application provides a positioning member, a battery module and an electrical device, wherein the positioning member comprises a positioning member body and a plurality of partitions arranged on the same side of the positioning member body, wherein the plurality of partitions are spaced apart along a first direction so that a first positioning portion is formed between two adjacent partitions, and the first positioning portion is used to support a corresponding battery cell so that a preset gap exists between two adjacent battery cells. Thus, the positioning member provided by the present application controls the spacing between successive battery cells through the first positioning portion on the positioning member body so that the size of the battery module formed after the assembly is consistent, which is conducive to standardized assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Structural schematic diagram of the positioning member provided by the embodiment of the present application;

[0024] Figure 2 For Figure 1 Partial enlarged view at position A in

[0025] Figure 3 Structural schematic diagram of the battery module provided by the embodiment of the present application;

[0026] Figure 4 For Figure 3 Exploded view of the battery module in

[0027] Figure 5 For Figure 4 Partial enlarged view at position B in

[0028] Figure 6 For Figure 4 Structural schematic diagram of the tray body in

[0029] Figure 7 For Figure 6 Structural schematic diagram of the relationship between the tray body and the cell installation from another perspective in

[0030] Reference numerals:

[0031] 10: Cell;

[0032] 11: Terminal;

[0033] 100: Positioning member body;

[0034] 110: First positioning portion;

[0035] 200: Partition;

[0036] 210: Inclined surface;

[0037] 300: Tray assembly;

[0038] 301: Installation cavity;

[0039] 310: Tray body;

[0040] 311: Installation groove;

[0041] 312: Stopper;

[0042] 313: Reinforcing rib;

[0043] 320: Cover body;

[0044] 400: Connecting piece. Detailed implementation manners

[0045] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all the implementation manners consistent with the present application. On the contrary, they are merely examples of methods and apparatuses consistent with some aspects of the present application as detailed in the appended claims.

[0046] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described here, for example, can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0047] As described in the background art section, after long-term use, the middle part of the new battery cells in the battery pack will bulge in the thickness direction. Compared with the new battery cells, when these old battery cells are used for cascade utilization, the dimensional tolerance of the total thickness of the old battery cells is relatively large. When the battery cells are arranged side by side in the thickness direction of the battery cells, the tray sizes required for the same number of battery cells are different. Therefore, the sizes of the assembled battery modules are inconsistent, which is not conducive to standardized assembly and is also not conducive to reusing the original trays for encapsulation.

[0048] In view of the above problems existing in the prior art, the present application provides a positioning member, a battery module and an electrical equipment. The positioning member provided by the present application includes a positioning member body and a plurality of partition plates arranged on the same side of the positioning member body. The plurality of partition plates are spaced apart along a first direction so that a first positioning portion is formed between two adjacent partition plates. The first positioning portion is used to correspondingly support the battery cells so that a preset gap is formed between two adjacent battery cells. By controlling the distance between the cascade battery cells through the first positioning portion on the positioning member body, the sizes of the assembled battery modules are made consistent, which is conducive to standardized assembly.

[0049] The technical solution of the present application will be described in detail below with specific embodiments. These several specific embodiments below can be combined with each other, and for the same or similar concepts or processes, they may not be repeated in some embodiments.

[0050] In a first aspect, referring to Figures 1 - 7 as shown, an embodiment of the present application provides a positioning member for positioning a battery cell 10, such as a cascade battery cell. The positioning member includes a positioning member body 100 and a plurality of partition plates 200 arranged on the same side of the positioning member body 100.

[0051] The plurality of partition plates 200 are spaced apart along a first direction, so that a first positioning portion 110 is formed between two adjacent partition plates 200. The first positioning portion 110 is used to correspondingly support the battery cell 10, so that a preset gap L is provided between two adjacent battery cells 10.

[0052] In this embodiment, the positioning member body 100 is used to position the battery cell 10. It can be in a plate-like, strip-like or other structures. A plurality of first positioning portions 110 are arranged side by side on the positioning member body 100.

[0053] The plurality of partition plates 200 are spaced apart along the first direction on the positioning member body 100, as shown in the X-axis direction in Figure 1 . A first positioning portion 110 is formed between two adjacent partition plates 200. Therefore, a plurality of first positioning portions 110 are arranged side by side. The first positioning portion 110 is used to match at least one side of the battery cell 10 in terms of thickness. The first positioning portion 110 can be a positioning groove, that is, one side of the battery cell 10 in terms of thickness can be partially inserted into the positioning groove.

[0054] In addition, the partition plate 200 can be integrally formed with the positioning member body 100, or the partition plate 200 can be connected to the same side of the positioning member body 100 by means of screwing, bonding, clamping, etc. In this way, it is convenient for the manufacture, installation, etc. of the positioning member single piece.

[0055] Among them, the battery cell 10 is generally in a rectangular parallelepiped sheet-like or plate-like structure. Since the internal reaction of the battery cell 10 will cause the middle part to slightly expand and bulge, while the peripheral dimensions remain basically unchanged. Therefore, when installing the battery cell 10, its expansion amount should be considered to avoid interference between the battery cells 10 and affect the use.

[0056] Specifically, the positioning member body 100 can be arranged in a supporting device or on an electrical device. When a plurality of battery cells 10 are arranged side by side on the positioning member body 100, at least one side of each battery cell 10 in terms of thickness is correspondingly located on each first positioning portion 110. A preset gap L is left between adjacent battery cells 10 through the first positioning portion 110, thereby forming a cascade battery module. These cascade battery modules can be used in devices with a reduced power consumption requirement level, such as communication base stations, energy storage power stations and other devices, so as to reduce the construction cost of these electrical devices.

[0057] It should be noted that the preset gap L is the minimum distance required for the expansion of two adjacent battery cells 10. As Figure 2 shown, it can be determined according to the actual situation. Among them, when two adjacent battery cells 10 expand, they can be in contact or not in contact.

[0058] It can be understood that, since the used battery cells for second-life utilization have a larger thickness tolerance compared to new battery cells, the battery cells 10 are separated by the first positioning portion 110 on the positioning member body 100, and the preset gap L is used to accommodate the bulging portion of the battery cells 10, ensuring that the overall dimensions after grouping are consistent and the distance between the pole columns is consistent, which is beneficial to the standardization of the structural dimensions of the battery module. Moreover, by replacing the positioning members with different spacings, the installation of battery cells 10 with different thicknesses can also be satisfied, and the installation is more flexible.

[0059] It should be noted that the original tray can also be reused for the encapsulation of second-life battery cells. For example, if the original tray can hold ten new battery cells, nine or eight bulging second-life battery cells can be installed in the original tray through the positioning member, further reducing costs.

[0060] Therefore, the positioning member provided in the embodiment of the present application includes a positioning member body 100 and a plurality of partition plates 200 arranged on the same side of the positioning member body 100. The plurality of partition plates 200 are spaced apart along the first direction, so that a first positioning portion 110 is formed between two adjacent partition plates 200. The first positioning portion 110 is used to correspondingly support the battery cell 10, so that a preset gap L is provided between two adjacent battery cells 10. The distance between the second-life battery cells is controlled by the first positioning portion 110 on the positioning member body 100, so that the size of the battery module formed after assembly is consistent, which is beneficial to standardized assembly.

[0061] In a possible design, the side surface of the partition plate 200 facing another partition plate 200 is an inclined surface 210. The inclined surface 210 is used to provide guidance for the battery cell 10 to be inserted into the first positioning portion 110, and a part of the inclined surface 210 is used to contact the battery cell 10.

[0062] Specifically, as Figure 1 、 Figure 2 shown, the side surface of the partition plate 200 has an inclined surface 210. The width between two opposite inclined surfaces 210 gradually increases in the direction away from the positioning member body 100. As shown in the positive direction of the Y axis in Figure 1 , it is convenient for the battery cell 10 to be easily inserted into the first positioning portion 110, reducing the assembly difficulty.

[0063] Among them, specific parameters such as the specific inclination angle of the inclined surface 210 can be set according to actual needs, and are not specifically limited in this embodiment.

[0064] Further, in this embodiment, the two inclined surfaces 210 on the same partition plate 200 are symmetrically arranged. In this way, it is convenient for the standardized production of the positioning member and the insertion of the battery cell 10.

[0065] In a second aspect, an embodiment of the present application further provides a battery module, including a plurality of battery cells 10 and at least one positioning member provided in any of the above embodiments, and each battery cell 10 is correspondingly arranged on each first positioning portion 110.

[0066] Among them, the structure of the positioning member has been described in detail in the above embodiments, and will not be elaborated here one by one.

[0067] It can be understood that for the battery module provided by the embodiment of the present application, by configuring the above-mentioned positioning member, the positioning member includes a positioning member body 100 and a plurality of partition plates 200 arranged on the same side of the positioning member body 100. The plurality of partition plates 200 are spaced apart along the first direction, so as to form a first positioning portion 110 between two adjacent partition plates 200. The first positioning portion 110 is used to correspondingly support the battery cell 10, so that a preset gap L is provided between two adjacent battery cells 10. The distance between the stepped battery cells is controlled by the first positioning portion 110 on the positioning member body 100, so that the size of the battery module formed after assembly is consistent, which is beneficial to standardized assembly.

[0068] Further, in this embodiment, a tray assembly 300 is further included. The tray assembly 300 has an installation cavity 301, and the battery cell 10 and the positioning member are arranged in the installation cavity 301.

[0069] Specifically, as Figure 3 、 Figure 4 shown, the tray assembly 300 is used to support the positioning member and the battery cell 10. It can be in a structure such as a shell shape or a frame shape. The tray assembly 300 has an installation cavity 301 inside, and the installation cavity 301 is generally rectangular parallelepiped-shaped. Therefore, the positioning member and the battery cell 10 can be placed in the installation cavity 301.

[0070] Exemplarily, the positioning member body 100 can be arranged on the inner bottom or the inner side wall of the tray assembly 300. When a plurality of battery cells 10 are arranged side by side in the installation cavity 301, at least one side of each battery cell 10 in the thickness direction is correspondingly located on each first positioning portion 110. The battery cells 10 are restricted in the installation cavity 301 by the first positioning portion 110, and a preset gap L is left between adjacent battery cells 10, thereby forming a stepped battery module. These stepped battery modules can be used in devices with a reduced power consumption requirement level, such as communication base stations, energy storage power stations and other devices, so as to reduce the construction cost of these power-consuming devices.

[0071] Furthermore, in this embodiment, the tray assembly 300 includes a tray body 310 and a cover 320 connected to the tray body 310. The cover 320 and the tray body 310 together enclose an installation cavity 301.

[0072] Specifically, as Figure 4 , Figure 6 shown, the tray body 310 is used to support the positioning member body 100 and the battery cell 10. It can be in the form of a plate, a block, etc., and can be assembled from multiple plates or integrally formed. The cover 320 is used to protect the battery cell 10. It can be in the form of a shell structure. The cover 320 is placed on the tray body 310 and encloses to form the installation cavity 301. The cover 320 and the tray body 310 can be detachably connected by means such as screwing or clamping.

[0073] Further, in this embodiment, at least one positioning member is provided on at least one of the tray body 310 and the cover 320.

[0074] Specifically, as Figure 4 , Figure 6 shown, the positioning members can be provided on the tray body 310 and distributed at intervals. The positioning members can be provided on the cover 320 and distributed at intervals.

[0075] Still further, in this embodiment, the number of positioning members is at least two. At least one positioning member is provided on the tray body 310, and at least one positioning member is provided on the side of the battery cell 10 facing away from the tray body 310.

[0076] Specifically, as Figure 4 shown, at least one positioning member can be provided above and below each battery cell 10 respectively, and the upper and lower positioning members are arranged opposite to each other to position both the upper and lower sides of each battery cell 10. In this way, the distance between each battery cell 10 is ensured to be more stable.

[0077] Exemplarily, Figure 4 shows that three positioning members are provided at intervals along the length extension direction above each battery cell 10, and three positioning members are also provided at intervals along the length extension direction below each battery cell 10.

[0078] Of course, more or fewer positioning members can also be provided, which can be determined according to actual needs and are not overly limited in this embodiment.

[0079] Still further, in this embodiment, the tray body 310 has at least one installation groove 311, and the positioning member is correspondingly provided on the installation groove 311.

[0080] Specifically, in combination with Figures 1 to 7As shown, the installation groove 311 is located on one side of the tray body 310 facing the installation cavity 301. It can be a rectangular groove, a semi-circular groove, etc. The positioning member body 100 matches the installation groove 311. Therefore, the positioning member body 100 can be embedded in the installation groove 311, ensuring positioning while obtaining a relatively flat installation surface, which is convenient for the battery cell 10 to contact the tray body 310.

[0081] Among them, the positioning member body 100 and the installation groove 311 can also be connected by at least one of cementing, screwing, and clamping. In this way, the positioning member body 100 can be effectively prevented from shifting in the installation groove 311.

[0082] Of course, the positioning structure between the positioning member body 100 and the tray body 310 can also be replaced by other types, as long as it is convenient for installation, and it can be determined according to actual needs. No specific limitation is made in this embodiment.

[0083] In addition, a heat-conducting layer can be provided between the tray body 310 and each battery cell 10, so that the heat generated by the battery cell 10 can be transferred to the tray body 310 through the heat-conducting layer. A coolant flow channel can be provided in the tray body 310 to dissipate heat from the battery cell 10. Among them, the heat-conducting layer can be a heat-conducting structural adhesive or a heat-conducting pad, etc. No specific limitation is made in this embodiment.

[0084] In order to effectively resist the expansion force of the battery cell 10, in this embodiment, two stop members 312 are provided on the tray body 310. The two stop members 312 are correspondingly arranged at both ends of the positioning member to limit the movement of each battery cell 10 located within the positioning member.

[0085] Specifically, as Figure 6 、 Figure 7 shown, the stop member 312 is used to limit the movement of the battery cell 10. It can be a plate-shaped, block-shaped structure, etc. The resisting surfaces of the two stop members 312 are roughly similar to the large surfaces of the battery cell 10. The two stop members 312 are respectively arranged on both sides of the tray body 310 and correspondingly located at both ends of the positioning member. The stop member 312 can be connected and fixed by welding, screwing, clamping, etc.

[0086] In this way, when the battery cell 10 expands during use, the two stop members 312 can effectively prevent the excessive expansion of the battery cell 10 from deforming the battery module.

[0087] Furthermore, in this embodiment, the stop member 312 is a hollow structure, and reinforcing ribs 313 are provided inside the stop member 312.

[0088] Specifically, as Figure 6 、 Figure 7As shown, the stopper 312 is a hollow rectangular plate-like structure, and a plurality of reinforcing ribs 313 are provided inside the stopper 312 to form a triangular cavity stable structure, which can ensure the service life of the battery module while ensuring light weight.

[0089] Optionally, in this embodiment, it further includes a plurality of connecting pieces 400. Each battery cell 10 is grouped in pairs in sequence, and the two grouped battery cells 10 are electrically connected through the connecting piece 400.

[0090] Specifically, as Figure 4 、 Figure 7 shown, the connecting piece 400 is used to connect the positive and negative electrode tabs of two adjacent battery cells 10. Such as Figure 4 the cylindrical protrusion in, which can be a sheet-like or thin-plate-like conductive metal. The connecting piece 400 can be connected to the pole column 11 at the end of the battery cell 10 by spot welding to complete the sequential series connection of all the battery cells 10.

[0091] In a third aspect, an embodiment of the present application further provides an electrical device, including a device body and the battery module provided in any of the above embodiments disposed on the device body.

[0092] Among them, the structure of the battery module has been described in detail in the above embodiments, and will not be elaborated here one by one.

[0093] Among them, the electrical device here can be a communication base station, an energy storage power station, etc. The device body of these electrical devices can be connected to the battery module by means of screwing, clamping, etc., and is also electrically connected to the battery module on the device body so that the electrical device can be powered when necessary.

[0094] It can be understood that for the electrical device provided by the embodiment of the present application, by configuring the above battery module, the battery module includes a positioning member, and the positioning member includes a positioning member body 100 and a plurality of partition plates 200 provided on the same side of the positioning member body 100. The plurality of partition plates 200 are spaced apart along the first direction so that a first positioning portion 110 is formed between two adjacent partition plates 200. The first positioning portion 110 is used to correspondingly support the battery cells 10 so that a preset gap L is provided between two adjacent battery cells 10. The distance between the stepped battery cells is controlled by the first positioning portion 110 on the positioning member body 100 so that the size of the battery module formed after assembly is consistent, which is beneficial to standardized assembly.

[0095] Other embodiments of the present application will be readily apparent to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only illustrative, and the true scope and spirit of the present application are pointed out by the claims.

[0096] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A positioning member for positioning a battery cell (10), characterized in that: The positioning member comprises a positioning member body (100) and a plurality of partitions (200) arranged on the same side of the positioning member body (100); The plurality of partitions (200) are spaced apart and distributed along a first direction so that a first positioning portion (110) is formed between two adjacent partitions (200), and the first positioning portion (110) is used to support the battery cells (10) accordingly so that a preset gap exists between two adjacent battery cells (10).

2. The positioning member according to claim 1, characterized in that: The side surface of the partition (200) facing the other partition (200) is an inclined surface (210), and the inclined surface (210) is used to provide guidance for the battery cell (10) to be inserted into the first positioning portion (110), and part of the inclined surface (210) is used to abut against the battery cell (10).

3. The positioning member according to claim 2, characterized in that: The two inclined surfaces (210) on the same partition (200) are symmetrically arranged.

4. A battery module, comprising a plurality of battery cells (10) and at least one positioning member according to any one of claims 1 to 3, wherein the battery cells (10) are correspondingly arranged on the first positioning portion (110).

5. The battery module according to claim 4, characterized in that: It also comprises a tray assembly (300), wherein the tray assembly (300) has an installation cavity (301), and the battery core (10) and the positioning member are arranged in the installation cavity (301).

6. The battery module according to claim 5, characterized in that: The tray assembly (300) comprises a tray body (310) and a cover body (320) connected to the tray body (310), wherein the cover body (320) and the tray body (310) together enclose the installation cavity (301).

7. The battery module according to claim 6, characterized in that: At least one of the tray body (310) and the cover body (320) is provided with at least one positioning member.

8. The battery module according to claim 6, characterized in that: The number of the positioning members is at least two, at least one of the positioning members is arranged on the tray body (310), and at least one of the positioning members is arranged on a side of the battery cell (10) facing away from the tray body (310).

9. The battery module according to claim 6, characterized in that: The tray body (310) is provided with at least one installation groove (311), and the positioning member is correspondingly arranged in the installation groove (311).

10. The battery module according to claim 9, characterized in that: The tray body (310) is provided with two stoppers (312); The two stoppers (312) are arranged correspondingly at the two ends of the positioning member to limit the movement of each of the battery cells (10) located in the positioning member.

11. The battery module according to claim 10, characterized in that: The stopper (312) is a hollow structure, and a reinforcing rib (313) is provided inside the stopper (312).

12. The battery module according to any one of claims 4 to 11, characterized in that: It also comprises a plurality of connecting sheets (400), the battery cells (10) are grouped in pairs in sequence, and the two battery cells (10) in a group are electrically connected via the connecting sheets (400).

13. An electrical equipment, characterized in that: The device comprises a device body and a battery module as claimed in any one of claims 4 to 12 arranged on the device body.

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