BATTERY MODULE AND LITHIUM BATTERY

Abstract

TITLE: BATTERY MODULE AND LITHIUM BATTERY This utility certificate relates to a battery module and a lithium battery. The battery module comprises a first mounting bracket, a second mounting bracket, an electrode connection piece, and a screw. The first mounting bracket is configured to be mounted on a first battery cell structure, and the second mounting bracket is configured to be mounted on a second battery cell structure. The electrode connection piece is located between the first and second mounting brackets. The screw is configured to fasten the first mounting bracket, the second mounting bracket, and the electrode connection piece together in series. The electrode connection piece comprises an electrode connection body and a connection loop. The electrode connection body abuts against the first and second mounting brackets, respectively.The connecting loop is attached to the electrode connection body and is positioned away from the screw. The connecting loop is connected to at least one of the first and second mounting brackets to increase the clamping force on a portion of the electrode connection body that is furthest from the screw. Figure for the abbreviation: Fig. 2.

Description

Title of the invention: BATTERY MODULE AND LITHIUM BATTERY technical field

[0001] This utility certificate relates to the field of battery modules and, more particularly, to a battery module and a lithium battery. PRIOR STATE OF TECHNOLOGY

[0002] A battery connector is a device used to transmit electrical current and is an essential component for connecting individual battery cells. It comes in various shapes, including circular, rectangular, trapezoidal, triangular, and stepped, and plays a vital role in a battery pack. In conventional technology, the battery connector is attached to the battery cells to form an electrical connection using methods such as resistance welding or boss welding. However, because the battery connector is not detachable after being welded to the cells, it presents problems such as being unrecyclable and difficult to repair.

[0003] To address the aforementioned problems, a spring tab-type structure is used for the battery connection piece, where the spring tab makes an electrical connection to the battery cell. The battery module then uses a screw to secure the battery connection piece, thus achieving a solderless assembly. However, during the solderless assembly, deformation of the spring tab on the connection piece generates a reaction force. This results in poor contact in areas far from the screw due to insufficient clamping force, leading to poor conductivity performance of the battery module.

[0004] Therefore, there is an urgent need for a structural design capable of providing a greater and more uniform clamping force on the connecting part. CONTENTS OF THE UTILITY CERTIFICATE

[0005] One objective of the utility certificate is to overcome the shortcomings of the prior art by providing a battery module and a lithium battery capable of exerting a greater and more uniform clamping force on a connecting part.

[0006] This objective is achieved by the following technical solution:

[0007] A battery module is supplied, comprising:

[0008] a first mounting bracket, a second mounting bracket, an electrode connection piece, and a screw. The first mounting bracket is configured to be mounted on a first battery cell structure,

[0009] and the second mounting bracket is configured to be mounted on a second battery cell structure. The electrode connection piece is located between the first mounting bracket and the second mounting bracket. The screw is configured to fasten the first mounting bracket, the second mounting bracket, and the electrode connection piece together in series.

[0010] The electrode connection piece comprises an electrode connection body and a connection loop. The electrode connection body abuts against the first and second mounting supports, respectively. The connection loop is connected to the electrode connection body and is positioned away from the screw. The connection loop is connected to at least one of the first and second mounting supports.

[0011] In one embodiment, the connecting loop engages with the first mounting support.

[0012] In one embodiment, the connecting loop is engaged with the second mounting support.

[0013] In one embodiment, there are at least two connecting loops, and the first mounting bracket and the second mounting bracket are each respectively engaged with one of the connecting loops.

[0014] In one embodiment, the connection loop defines an engagement opening, which is configured for the passage of an amount from the first mounting bracket or the second mounting bracket.

[0015] In one embodiment, the connecting loop comprises a connecting portion and a bent engagement portion. One end of the connecting portion is fixedly attached to the electrode connection body, and the other end is fixedly attached to the bent engagement portion. The bent engagement portion is configured to engage with a surface of the first or second mounting support.

[0016] In one embodiment, the battery module further includes a mounting plate mounted on the first mounting bracket, in which one end of the screw is fixed to the mounting plate.

[0017] In one embodiment, the connecting loop is connected to an outer periphery of the electrode connecting body.

[0018] In one embodiment, the connecting loops are distributed uniformly around the periphery of the electrode connecting body.

[0019] A lithium battery is also supplied, comprising the battery module according to any one of the preceding embodiments.

[0020] Compared to the prior art, the present utility certificate offers at least the following advantages:

[0021] In the described battery module, the electrode connection body is positioned between the first and second mounting brackets, allowing the battery cell structures of the first and second mounting brackets to be electrically connected via the electrode connection piece. The screw secures the first mounting bracket, the second mounting bracket, and the electrode connection piece in series, thus clamping the electrode connection body between the first and second mounting brackets. Furthermore, the connection loop is positioned away from the screw and is connected to at least one of the first and second mounting brackets. This increases the clamping force on the portion of the electrode connection body that is furthest from the screw, resulting in a more uniform distribution of force on the electrode connection piece and improved conductivity. DESCRIPTION OF THE ATTACHED DRAWINGS

[0022] To illustrate more clearly the technical solutions in the embodiments of this utility certificate, the accompanying drawings necessary for describing the embodiments will be briefly presented. It should be understood that the following drawings show only some embodiments of this utility certificate and should therefore not be considered as limiting its scope. For a person skilled in the art, other relevant drawings can be obtained from these drawings without creative effort.

[0023] [Fig-1] is a diagram of the structure of a battery module according to one embodiment.

[0024] [Fig.2] is a schematic exploded view of the structure of the battery module shown in [Fig. 1].

[0025] [Fig. 3] is another diagram of the battery module structure of [Fig. 1]. DESCRIPTION OF THE INVENTION

[0026] To facilitate a complete understanding of this utility certificate, it will now be described in more detail below with reference to the accompanying drawings, in which preferred embodiments of the utility certificate are shown. This utility certificate can, however, be embodied in many different forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided so that this description is thorough and comprehensive, and fully conveys the scope of the utility certificate to people in the trade.

[0027] It should be noted that when an element is described as being "attached to" another element, it may be directly on the other element, or intermediate elements may be present. When an element is described as being "connected to" another element, it may be directly connected to the other element, or intermediate elements may be present. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not indicate a single embodiment.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as that commonly understood by a person skilled in the art to which this utility certificate pertains. The terminology used in the description of the utility certificate herein is intended to describe particular embodiments only and is not intended to limit the utility certificate. The term "and / or" as used herein includes any combination of one or more of the associated listed elements.

[0029] This utility certificate provides a battery module comprising a first mounting bracket, a second mounting bracket, an electrode connection piece, and a screw. The first mounting bracket is configured to be mounted on a first battery cell structure, and the second mounting bracket is configured to be mounted on a second battery cell structure. The electrode connection piece is located between the first and second mounting brackets. The screw is configured to fasten the first and second mounting brackets and the electrode connection piece together in series. The electrode connection piece comprises an electrode connection body and a connection loop. The electrode connection body abuts against the first and second mounting brackets, respectively.The connecting loop is attached to the electrode connection body, is positioned away from the screw, and is connected to at least one of the first and second mounting brackets.

[0030] In the battery module described above, the electrode connection body is positioned between the first and second mounting brackets to electrically connect the battery cell structures of the first and second mounting brackets via the electrode connection piece. The screw secures the first mounting bracket, the second mounting bracket, and the electrode connection piece together in series, thus clamping the electrode connection body between the first and second mounting brackets. Furthermore, the connection loop is positioned away from the screw and is connected to at least one of the first and second mounting brackets to increase the clamping force on the electrode connection body. The electrode connection is positioned away from the screw, making the force on the electrode connection piece more uniform and improving conduction performance.

[0031] To better understand the technical solutions and the beneficial effects of this utility certificate, more details will be described with reference to specific embodiments.

[0032] As shown in Figures 1 to 3, one embodiment of a battery module 10 comprises a first mounting bracket 100, a second mounting bracket 200, an electrode connection piece 300, and a screw 400. The first mounting bracket 100 is configured to be mounted on a first battery cell structure, and the second mounting bracket 200 is configured to be mounted on a second battery cell structure. The electrode connection piece 300 is located between the first mounting bracket 100 and the second mounting bracket 200. The screw 400 is configured to fasten the first mounting bracket 100, the second mounting bracket 200, and the electrode connection piece 300 together in series.

[0033] Furthermore, the electrode connection piece 300 comprises an electrode connection body 310 and a connection loop 320. The electrode connection body 310 abuts against the first mounting bracket 100 and the second mounting bracket 200, respectively. The connection loop 320 is connected to the electrode connection body 310, is positioned at a distance from the screw 400, and is connected to at least one of the first mounting bracket 100 and the second mounting bracket 200.

[0034] In this embodiment, the electrode connection body 310 is in electrical contact with the battery elements of the first mounting bracket 100 and the second mounting bracket 200. The screw 400 secures the first mounting bracket 100, the second mounting bracket 200, and the electrode connection piece 300, resulting in a high clamping force on the electrode connection body 310 near the screw 400. However, this creates a problem where the clamping force is lower on the parts of the electrode connection body 310 that are further from the screw 400, resulting in insufficient contact between the distant parts of the electrode connection body 310 and the battery elements.By positioning the connection loop 320 on the electrode connection body 310 away from the screw 400, the connection loop 320 can be connected to either the first mounting bracket 100 or the second mounting bracket 200, or connection loops 320 can be connected to both the first mounting bracket 100 and the second mounting bracket 200. This increases the clamping force on the part of the electrode connection body 310 away from the screw 400, thus improving conduction performance.

[0035] Furthermore, the electrode connection body 310 can be installed at one end of the battery module or between two battery modules. When the connection body When electrode 310 is installed at one end of the battery module, the first mounting bracket 100 acts as a protective end support and does not need to house a battery cell. The second mounting bracket 200 houses a battery cell, and the electrode 310 connection body connects electrically to the battery cell inside the second mounting bracket 200. When electrode 310 is installed between two battery modules, both the first mounting bracket 100 and the second mounting bracket 200 house battery cells, and the electrode 310 connection body connects electrically to the battery cells of both the first mounting bracket 100 and the second mounting bracket 200.

[0036] In the battery module described above, the electrode connection body 310 is located between the first mounting bracket 100 and the second mounting bracket 200 to allow the battery element structures of the first mounting bracket 100 and the second mounting bracket 200 to be electrically connected via the electrode connection piece 300. The screw 400 secures the first mounting bracket 100, the second mounting bracket 200 and the electrode connection piece 300, thus clamping the electrode connection body 310 between the first mounting bracket 100 and the second mounting bracket 200.In addition, the connecting loop 320 is positioned away from the screw 400 and is connected to at least one of the first mounting bracket 100 and second mounting bracket 200 to increase the clamping force on the part of the electrode connecting body 310 away from the screw 400, thus making the force on the electrode connecting part 300 more uniform and improving conduction performance.

[0037] In one embodiment, the connecting loop 320 engages with the first mounting support 100. In this embodiment, there may be one or more connecting loops 320, and each connecting loop 320 engages with the first mounting support 100 to increase the clamping force on the electrode connecting body 310.

[0038] In one embodiment, the connecting loop 320 engages with the second mounting support 200. In this embodiment, there may be one or more connecting loops 320, and each connecting loop 320 engages with the second mounting support 200 to increase the clamping force on the electrode connecting body 310.

[0039] In one embodiment, there are at least two connecting loops 320, and the first mounting bracket 100 and the second mounting bracket 200 are each respectively engaged with one of the connecting loops 320. In this embodiment, part of the connecting loops 320 is engaged with the first mounting bracket 100, and another part is engaged with the second mounting bracket 100. assembly 200. Such engagement of the upper and lower sides results in a more uniform distribution of force on the electrode connection body 310.

[0040] As shown in [Fig.3], in one embodiment, the connecting loop 320 defines an engagement opening 320a, which is configured for the passage of an upright of the first mounting bracket 100 or the second mounting bracket 200. In this embodiment, the connecting loop 320 defines the engagement opening 320a in a vertical direction, and an upright of the first mounting bracket 100 or the second mounting bracket 200 passes through the engagement opening 320a, causing the connecting loop 320 to engage with the first mounting bracket 100 or the second mounting bracket 200.

[0041] As shown in [Fig. 2], in one embodiment, the connecting loop 320 comprises a connecting portion 321 and a bent engagement portion 322. One end of the connecting portion 321 is fixedly connected to the electrode connecting body 310, and the other end is fixedly connected to the bent engagement portion 322. The bent engagement portion 322 is configured to engage with a surface of the first mounting bracket 100 or the second mounting bracket 200. In this embodiment, the connecting portion 321 and the bent engagement portion 322 are formed as a single unit. After the electrode connecting body 310 is initially secured by the screw 400, the bent engagement portion 322 is then bent to engage with the first mounting bracket 100 or the second mounting bracket 200.Specifically, the folded engagement portion 322 abuts against a surface of the first mounting support 100 opposite the first battery element structure, or the folded engagement portion 322 abuts against a surface of the second mounting support 200 opposite the second battery element structure, further increasing the clamping force on the electrode connection body 310.

[0042] As shown in Figures 1 and 2, in one embodiment, the battery module further comprises a mounting plate 500 mounted on the first mounting bracket 100, and one end of the screw 400 is fixed to the mounting plate 500. It can be understood that the first mounting bracket 100 defines a mounting groove, and the mounting plate 500 is installed inside the mounting groove. One end of the screw 400 is fixed to the mounting plate 500, and the other end of the screw 400 passes through the mounting plate 500 to fix in series the first mounting bracket 100, the electrode connection body 310, and the second mounting bracket 200. The mounting plate 500 increases the bearing surface of the force on the screw 400, making the overall force distribution more uniform.In this embodiment, the 500 mounting plate is an aluminum plate, which gives the 500 mounting plate good heat dissipation performance.

[0043] In another embodiment, the mounting plate 500 is mounted on the first mounting bracket 100, where the first mounting bracket 100 is an end support of the battery module.

[0044] As shown in [Fig.2] and [Fig.3], in one embodiment, the connecting loop 320 is connected to an outer periphery of the electrode connecting body 310. In this embodiment, the screw 400 passes through a central part of the electrode connecting body 310. By arranging the connecting loop 320 at the outer periphery of the electrode connecting body, the clamping force on the electrode connecting body 310 can be improved.

[0045] In one embodiment, the connecting loops 320 are distributed uniformly around the periphery of the electrode connecting body 310. In this embodiment, there are several connecting loops 320, and they are distributed uniformly around the periphery of the connecting body, which makes the distribution of force on the electrode connecting body 310 more uniform, thus improving the conductive effect of the electrode connecting body 310.

[0046] The present application also relates to a lithium battery, comprising the battery module 10 according to any one of the preceding embodiments.

[0047] Compared to the prior art, the present utility certificate offers at least the following advantages:

[0048] In the described battery module, the electrode connection body 310 is positioned between the first mounting bracket 100 and the second mounting bracket 200, allowing the battery cell structures of the first mounting bracket 100 and the second mounting bracket 200 to be electrically connected via the electrode connection piece 300. The screw 400 secures the first mounting bracket 100, the second mounting bracket 200, and the electrode connection piece 300 together in series, thus clamping the electrode connection body 310 between the first mounting bracket 100 and the second mounting bracket 200. Furthermore, the connection loop 320 is positioned away from the screw 400 and is connected to at least one of the first mounting bracket 100 and the second mounting bracket 200.This increases the clamping force on the part of the electrode connection body 310 furthest from the screw 400, resulting in a more even distribution of force on the electrode connection piece 300 and improved conduction performance.

[0049] The preceding embodiments are only a few implementations of this utility certificate, and their descriptions are relatively specific and detailed, but they should not be interpreted as a limitation of the scope of the utility certificate. It should be noted that, for a person skilled in the art, several modifications and improvements can be made without departing from the concept of this utility certificate, all of which fall within the scope of this protection. utility certificate. Therefore, the scope of patent protection for this utility certificate must be determined by the attached claims.

Claims

Demands

1. Battery module, comprising: a first mounting bracket configured to be mounted on a first battery cell structure; a second mounting bracket configured to be mounted on a second battery cell structure; an electrode connection piece situated between the first mounting bracket and the second mounting bracket; and a screw configured to fasten together in series the first mounting bracket, the second mounting bracket, and the electrode connection piece; wherein the electrode connection piece comprises an electrode connection body and a connection loop; wherein the electrode connection body abuts against the first mounting bracket and the second mounting bracket, respectively; wherein the connection loop is connected to the electrode connection body and is disposed at a distance from the screw;and in which the connecting loop is connected to at least one of the first mounting bracket and the second mounting bracket.

2. Battery module according to claim 1, wherein the connection loop engages with the first mounting bracket.

3. Battery module according to claim 1, wherein the connection loop engages with the second mounting bracket.

4. Battery module according to claim 1, wherein the connection loop comprises at least two connection loops, and wherein the first mounting bracket and the second mounting bracket are each respectively engaged with one of the at least two connection loops.

5. Battery module according to claim 1, wherein the connection loop defines an engagement opening, the engagement opening being configured for the passage of an amount from the first mounting bracket or the second mounting bracket.

6. Battery module according to claim 1, wherein the connection loop comprises a connection portion and a folded engagement portion, wherein one end of the connection portion is fixedly connected to the electrode connection body, one other end of the connecting portion is fixedly connected to the bent engagement portion, and the bent engagement portion is configured to be in contact with a surface of the first mounting bracket or the second mounting bracket.

7. Battery module according to claim 1, further comprising a mounting plate mounted on the first mounting bracket, in which one end of the screw is fixed to the mounting plate.

8. Battery module according to claim 1, wherein the connection loop is connected to an outer periphery of the electrode connection body.

9. Battery module according to claim 8, wherein the connection loop is distributed uniformly around a periphery of the electrode connection body.

10. Lithium battery, comprising the battery module according to any one of claims 1 to 9.

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