A connecting rivet and a battery module

Abstract

The present invention relates to the technical field of battery modules, and discloses a connecting rivet and a battery module. The connecting rivet includes a rivet body, a rivet head and a disassembly hole. The rivet body can sequentially pass through a first plate and a second plate. A set of corresponding clamping teeth are arranged on both sides of the rivet body, and a clamping groove is arranged on the second plate. The clamping teeth can be clamped with the clamping groove; the rivet head is arranged at one end of the rivet body. When the clamping teeth are clamped with the clamping groove, the rivet head abuts against the first plate; the disassembly hole is arranged on the rivet body, and a disassembly rod can be placed in the disassembly hole and expand the clamping groove so that the clamping teeth are disengaged from the clamping groove. The connecting rivet of the present invention can be used for connecting the first plate and the second plate; by adding a disassembly hole for disassembling the connecting rivet and the second plate, the connecting rivet and the second plate will not be damaged during the disassembly process, and the disassembled connecting rivet can be reused again, saving costs.

Description

Technical Field

[0001] The present invention relates to the technical field of battery modules, and particularly to a connecting rivet and a battery module. Background Art

[0002] When assembling a battery module, as Figure 1 shown, it is necessary to connect the injection-molded separator 10 and the cover plate 20 of the battery module to fix the bus bar between the separator 10 and the cover plate 20. At present, the separator 10 and the cover plate 20 are mostly riveted by a rivet 30.

[0003] The method of riveting the injection-molded separator 10 and the cover plate 20 in the prior art is as follows: through the buckle position of the rivet 30, it is buckled into the groove of the separator 10. This connection method has the following disadvantages: once the rivet 30 is assembled and the buckle position is locked, it is very difficult to disassemble, and the disassembly process will cause damage to the separator 10, the cover plate 20 and the rivet 30, increasing the production line installation cost and the after-sales maintenance cost.

[0004] Therefore, there is an urgent need for a connecting rivet to solve the above problems. Summary of the Invention

[0005] Based on the above, the purpose of the present invention is to provide a connecting rivet and a battery module. The connecting rivet is easy to disassemble, will not cause damage to the connecting rivet, enables the connecting rivet to be used multiple times, and saves costs.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A connecting rivet for connecting a first plate and a second plate, comprising:

[0008] A rivet body that can sequentially pass through the first plate and the second plate. A set of corresponding clamping teeth are arranged on both sides of the rivet body. A clamping groove is arranged on the second plate, and the clamping teeth can be clamped with the clamping groove;

[0009] A rivet head is arranged at one end of the rivet body. When the clamping teeth are clamped with the clamping groove, the rivet head abuts against the first plate;

[0010] A disassembly hole is arranged on the rivet body. A disassembly rod can be placed in the disassembly hole and expand the clamping groove so that the clamping teeth are disengaged from the clamping groove.

[0011] As a preferred solution of the connecting rivet, two or more groups of clamping teeth are arranged, and the two or more groups of clamping teeth are arranged at intervals along the axis of the rivet body.

[0012] As a preferred solution for a connecting rivet, the clamping teeth include a guiding surface and a clamping surface, the guiding surface is arranged away from the rivet head; the clamping surface is arranged close to the rivet head.

[0013] As a preferred solution for a connecting rivet, two opposite clamping protrusions are arranged on the second plate, the clamping protrusions are arranged towards the first plate, a clamping part is arranged at the end of the clamping protrusion, and a clamping groove is formed between the two clamping parts.

[0014] As a preferred solution for a connecting rivet, the clamping part is inclined towards the side away from the first plate.

[0015] As a preferred solution for a connecting rivet, an inclined surface and an abutting surface are arranged at the end of the clamping part, and the clamping teeth can be clamped with the abutting surface.

[0016] As a preferred solution for a connecting rivet, a through hole communicating with the disassembly hole is arranged on the rivet head, and the diameter of the through hole is not less than the distance between the tops of two corresponding clamping teeth.

[0017] As a preferred solution for a connecting rivet, a connecting hole for accommodating the rivet body and a disassembly groove for accommodating the disassembly rod are arranged on the first plate.

[0018] As a preferred solution for a connecting rivet, a guiding part is arranged at one end of the rivet body away from the rivet head.

[0019] A battery module includes a separator plate, a cover plate and the connecting rivet according to any one of the above solutions, and the connecting rivet can connect the separator plate and the cover plate.

[0020] The beneficial effects of the present invention are as follows:

[0021] The connecting rivet can be used for connecting the first plate and the second plate. The rivet body can pass through the first plate and then be clamped with the clamping groove of the second plate through the clamping teeth, and the rivet head can abut against the first plate; by adding a disassembly hole for disassembling the connecting rivet and the second plate, when disassembly is required, only the disassembly rod needs to be placed in the disassembly hole, and the disassembly rod can expand the clamping groove to make the clamping teeth disengage from the clamping groove. After disengaging, the connecting rivet can be taken out to realize the disassembly of the connecting rivet. The disassembly process will not cause damage to the connecting rivet and the second plate, and the disassembled connecting rivet can be used again, saving costs. Description of the Drawings

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

[0023] Figure 1 is a schematic diagram of a rivet connecting a spacer plate and a cover plate provided in the background art;

[0024] Figure 2 is a schematic diagram of a connecting rivet provided in the specific embodiment of the present invention;

[0025] Figure 3 is a side view of the connecting rivet provided in the specific embodiment of the present invention;

[0026] Figure 4 is a schematic diagram of the connecting rivet connecting a first plate and a second plate provided in the specific embodiment of the present invention.

[0027] In the figure:

[0028] 10, spacer plate; 20, cover plate; 30, rivet;

[0029] 100, first plate;

[0030] 200, second plate; 210, clamping protrusion; 220, clamping portion; 221, inclined surface; 222, abutting surface;

[0031] 300, disassembly rod;

[0032] 1, rivet body; 11, clamping teeth; 111, guiding surface; 112, clamping surface; 12, guiding portion;

[0033] 2, rivet head; 21, through hole;

[0034] 3, disassembly hole. Specific Embodiment

[0035] To make the technical problems solved by the present invention, the technical solutions adopted, and the achieved technical effects clearer, the following will further describe in detail the technical solutions of the embodiments of the present invention with reference to the drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0036] Such as Figures 2 - 4As shown in the figure, this embodiment provides a connecting rivet for a battery module. The connecting rivet includes a rivet body 1, a rivet head 2, and a disassembly hole 3. The rivet body 1 can sequentially pass through a first plate 100 and a second plate 200. A set of corresponding clamping teeth 11 are arranged on both sides of the rivet body 1. A clamping groove is arranged on the second plate 200, and the clamping teeth 11 can be clamped with the clamping groove; the rivet head 2 is arranged at one end of the rivet body 1. When the clamping teeth 11 are clamped with the clamping groove, the rivet head 2 abuts against the first plate 100; the disassembly hole 3 is arranged on the rivet body 1, and a disassembly rod 300 can be placed in the disassembly hole 3 and expand the clamping groove so that the clamping teeth 11 are disengaged from the clamping groove.

[0037] The connecting rivet can be used for connecting the first plate 100 and the second plate 200. The rivet body 1 can pass through the first plate 100 and then be clamped with the clamping groove of the second plate 200 through the clamping teeth 11, and the rivet head 2 can abut against the first plate 100; by adding a disassembly hole 3 for the disassembly between the connecting rivet and the second plate 200. When disassembly is required, only need to place the disassembly rod 300 in the disassembly hole 3. The disassembly rod 300 can expand the clamping groove so that the clamping teeth 11 are disengaged from the clamping groove. After disengagement, the connecting rivet can be taken out to realize the disassembly of the connecting rivet. The connecting rivet and the second plate 200 will not be damaged during the disassembly process, and the disassembled connecting rivet can be used again, saving costs.

[0038] Exemplarily, the connecting rivet can be used for the connection between the separator 10 and the cover plate 20 in a battery module as Figure 1 shown. The first plate 100 is the cover plate 20, and the second plate 200 is the separator 10. Due to the structure of the existing rivet 30, there will be a gap between the separator 10 and the cover plate 20, which easily causes the separator 10 and the cover plate 20 to shake relative to each other, and then generate abnormal noises; in addition, the space sizes of different battery modules are inconsistent, resulting in different heights between the separator 10 and the cover plate 20, so different sizes of rivets 30 are required. To meet the assembly requirements, multiple sets of molds need to be developed, greatly increasing the cost investment.

[0039] Preferably, there are two or more sets of clamping teeth 11. The two or more sets of clamping teeth 11 are arranged at intervals along the axis of the rivet body 1. The two or more sets of clamping teeth 11 can be applicable to the connection between the separator 10 and the cover plate 20 in different battery modules, with better versatility and more cost savings; at the same time, when installing the connecting rivet, the connecting rivet can be pressed down so that the clamping groove on the separator 10 is clamped with a suitable set of clamping teeth 11 on the clamping body, effectively removing the gap between the separator 10 and the cover plate 20 and preventing relative shaking and abnormal noises.

[0040] Specifically, the clamping teeth 11 include a guiding surface 111 and a clamping surface 112. The guiding surface 111 is arranged away from the rivet head 2 and plays a guiding role when the rivet body 1 enters the clamping groove, facilitating the entry of the rivet body 1; the clamping surface 112 is arranged close to the rivet head 2 and is used for the clamping of the clamping teeth 11 and the clamping groove, making the clamping more firm. Exemplarily, the angle between the guiding surface 111 and the axis of the rivet body 1 is an acute angle, and the angle between the clamping surface 112 and the axis of the rivet body 1 is a right angle. The guiding surface 111 and the clamping surface 112 can jointly achieve the one-way clamping of the clamping teeth 11, that is, the connecting rivet can only be installed unidirectionally from the first plate 100 to the second plate 200. When the connecting rivet is pulled in the reverse direction, the connecting rivet will be further locked, thereby realizing the reliability of the connection between the first plate 100 and the second plate 200.

[0041] Further, for facilitating the connection of the connecting rivet, a guiding portion 12 is provided at one end of the rivet body 1 away from the rivet head 2 to play a role in guiding the installation.

[0042] In this embodiment, two opposite clamping protrusions 210 are provided on the second plate 200. The clamping protrusions 210 are arranged towards the first plate 100, and a clamping portion 220 is provided at the end of the clamping protrusion 210. A clamping groove for clamping with the clamping teeth 11 is formed between the two clamping portions 220. By providing the clamping protrusions 210 towards the first plate 100, the clamping distance between the second plate 200 and the first plate 100 can be reduced, and further the thickness of the first plate 100 and the second plate 200 after connection can be reduced.

[0043] Preferably, the clamping portion 220 is inclined towards the side away from the first plate 100. The inclined clamping portion 220 on the one hand plays a guiding role for the entry of the clamping teeth 11, and on the other hand, being inclined towards the side away from the first plate 100 can also make the clamping more firm.

[0044] To match the structure of the clamping teeth 11, an inclined surface 221 and an abutting surface 222 are provided at the end of the clamping portion 220 in this embodiment. The inclined surface 221 has the same inclination direction as the clamping portion 220 and can be used for guiding the clamping teeth 11. The abutting surface 222 can abut against the clamping surface 112 of the clamping teeth 11 to realize the connection between the first plate 100 and the second plate 200.

[0045] Further, for realizing the disassembly of the connecting rivet, a disassembly hole 3 is added on the rivet body 1. Correspondingly, a through hole 21 communicating with the disassembly hole 3 is provided on the rivet head 2 for accommodating the disassembly rod 300. It should be noted that, in order to realize the separation of the clamping teeth 11 from the clamping groove, the diameter of the required disassembly rod 300 should be greater than the distance between the tops of two correspondingly arranged clamping teeth 11. Correspondingly, the diameter of the through hole 21 of the rivet head is also not less than the distance between the tops of two correspondingly arranged clamping teeth 11. Optionally, the disassembly rod 300 is a round bar.

[0046] In this embodiment, the first plate 100 is provided with a connection hole for accommodating the rivet body 1 and a disassembly groove for accommodating the disassembly rod 300. Preferably, the disassembly groove is located in the middle of the connection hole so that the disassembly rod 300 can expand the clamping groove more evenly, thereby ensuring smoother disassembly. It can be understood that in order to achieve the abutment of the riveting head and the first plate 100, the area of the riveting head is larger than the area of the connection hole.

[0047] This embodiment also discloses a battery module, including a separator 10, a cover plate 20, and the connecting rivet as described in any of the above solutions. The connecting rivet can connect the separator 10 and the cover plate 20.

[0048] Note that the above is only a preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

[0049] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0050] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A connecting rivet for connecting a first plate (100) and a second plate (200). Characterized in that: Comprising: A rivet body (1) capable of sequentially passing through the first plate (100) and the second plate (200), a set of corresponding clamping teeth (11) are arranged on both sides of the rivet body (1), a clamping groove is arranged on the second plate (200), and the clamping teeth (11) can be clamped with the clamping groove; A rivet head (2) arranged at one end of the rivet body (1), when the clamping teeth (11) are clamped with the clamping groove, the rivet head (2) abuts against the first plate (100); A disassembly hole (3) arranged on the rivet body (1), a disassembly rod (300) can be placed in the disassembly hole (3) and expand the clamping groove so that the clamping teeth (11) are disengaged from the clamping groove; There are two or more groups of the clamping teeth (11), and two or more groups of the clamping teeth (11) are arranged at intervals along the axis of the rivet body (1); A guiding portion (12) is arranged at one end of the rivet body (1) away from the rivet head (2).

2. The connecting rivet according to claim 1, Characterized in that: The clamping teeth (11) include a guiding surface (111) and a clamping surface (112), the guiding surface (111) is arranged away from the rivet head (2); the clamping surface (112) is arranged close to the rivet head (2).

3. The connecting rivet according to claim 1, Characterized in that: Two opposite clamping protrusions (210) are arranged on the second plate (200), the clamping protrusions (210) are arranged towards the first plate (100), a clamping portion (220) is arranged at the end of the clamping protrusion (210), and the clamping groove is formed between the two clamping portions (220).

4. The connecting rivet according to claim 3, Characterized in that: The clamping portion (220) is inclined towards the side away from the first plate (100).

5. The connecting rivet according to claim 3, Characterized in that: An inclined surface (221) and an abutting surface (222) are arranged at the end of the clamping portion (220), and the clamping teeth (11) can be clamped with the abutting surface (222).

6. The connecting rivet according to claim 1, Characterized in that: A through hole (21) communicating with the disassembly hole (3) is arranged on the rivet head (2), and the diameter of the through hole (21) is not less than the distance between the tops of two corresponding clamping teeth (11).

7. The connecting rivet according to claim 1, Characterized in that: A connecting hole for accommodating the rivet body (1) and a disassembly groove for accommodating the disassembly rod (300) are arranged on the first plate (100).

8. A battery module, Characterized in that: Comprising a separator plate (10), a cover plate (20) and the connecting rivet according to any one of claims 1-7, and the connecting rivet can connect the separator plate (10) and the cover plate (20).

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