Secondary battery cover protection sheet

Abstract

This utility model discloses a protective sheet for a secondary battery cover, comprising a protective sheet and a connecting sheet. The connecting sheet extends into an extension portion, and the protective sheet is fixedly attached to the bottom of the connecting sheet. The upper and lower end faces of the protective sheet are each provided with a recessed portion, located at both ends and the middle of the protective sheet, respectively. The end of the protective sheet has a notch. It has advantages such as simple structure, compact fit, and reasonable design; therefore, it is a product with superior technical and economic performance.

Description

[Technical Field]

[0001] This utility model mainly relates to a protective sheet for a secondary battery cover. [Background Technology]

[0002] In the battery assembly process, the battery cell is the core component of the battery, responsible for storing and releasing electrical energy. The connecting piece is used to connect the electrodes to realize the overall function of the battery. The existing connecting pieces are generally single-piece structures without protective pieces. When the connecting piece is pressed down to connect the battery cell, it is easy to damage the battery cell. Therefore, it is necessary to improve the connecting piece. [Utility Model Content]

[0003] To solve at least one of the above problems, this utility model proposes a new structural solution. The technical solution of this secondary battery cover protection sheet is as follows:

[0004] A secondary battery cover protection sheet includes a protection sheet and a connecting sheet, wherein the connecting sheet extends into an extension portion and the protection sheet is fixedly attached to the bottom of the connecting sheet;

[0005] The protective sheet has recessed areas on both the upper and lower end faces, with the recessed areas located at both ends and the middle of the protective sheet, respectively; the protective sheet also has notches at its ends.

[0006] Preferably, the number and position of the concave positions on the upper and lower end faces correspond.

[0007] Preferably, the extension portion includes a first extension portion and a second extension portion, which are spaced apart to make the connecting piece as a whole U-shaped, and each of the first extension portion and the second extension portion is connected to a protective piece.

[0008] Preferably, the top surface of the connecting piece protrudes to form a convex pillar.

[0009] The beneficial effects of this utility model compared with the prior art are:

[0010] In this structure, a protective plate is added to the connecting piece to prevent damage to the battery cell during the pressing process. The protective plate acts as a buffer and disperses pressure, evenly distributing the pressure applied by the connecting piece across its surface, thereby reducing localized pressure on the battery cell and preventing damage or performance degradation. Simultaneously, the protective plates in this structure are arranged with recessed sections, which reduce the contact area between the protective plates and facilitate separation. It boasts advantages such as simple structure, compact fit, and rational design; therefore, it is a product with superior technical and economic performance. [Attached Image Description]

[0011] Figure 1A schematic diagram illustrating the application of the secondary battery cover protection sheet in a preferred embodiment of this utility model;

[0012] Figure 2 This is an exploded view of the secondary battery cover protection sheet in a preferred embodiment of the present invention.

Detailed Implementation Methods

[0013] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0014] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0015] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0016] The preferred embodiment provided by this utility model is as follows: Figure 1 and Figure 2 As shown, a secondary battery cover protection sheet includes a protection sheet 1 and a connecting sheet 2. The connecting sheet 2 extends into an extension portion 21, and the protection sheet 1 is fixedly attached to the bottom of the connecting sheet 2.

[0017] The upper and lower end faces of the protective sheet 1 are provided with recessed positions 22. The number and position of the recessed positions 22 on the upper and lower end faces are corresponding, and the recessed positions 22 are respectively provided at both ends and the middle of the protective sheet 1. The end of the protective sheet 1 is provided with a notch position 23, which is located at both ends of the protective sheet 1.

[0018] The extension portion 21 includes a first extension portion 24 and a second extension portion 25. The first extension portion 24 and the second extension portion 25 are spaced apart so that the connecting piece 2 is U-shaped as a whole. Each of the first extension portion 24 and the second extension portion 25 is connected to a protective piece 1.

[0019] The connecting piece 2 is used to connect the cover plate and the battery cell. The top surface of the connecting piece 2 protrudes to form a protruding post 26 for mounting electrode components. The protective piece 1 is welded to the connecting piece 2 and is located between the connecting piece 2 and the battery cell.

[0020] In the battery assembly process, the battery cell is the core component of the battery, responsible for storing and releasing electrical energy. The connecting piece is used to connect the electrodes to realize the overall function of the battery. The existing connecting pieces are generally single-piece structures without protective pieces. When the connecting piece is pressed down to connect the battery cell, it is easy to damage the battery cell. Therefore, it is necessary to improve the connecting piece.

[0021] A protective sheet is typically a thin sheet of material placed between the connecting piece and the battery cell. In this structure, a protective sheet is added to the connecting piece. The main function of the protective sheet is to prevent damage to the battery cell during the pressing process of the connecting piece. During battery assembly or use, the connecting piece may be subjected to various forces, such as pressure and vibration. These forces may cause the connecting piece to exert excessive pressure on the battery cell, thereby damaging the cell's structure or affecting its performance. The protective sheet can buffer and disperse pressure, evenly distributing the pressure applied by the connecting piece on the surface of the protective sheet, thereby reducing localized pressure on the battery cell and preventing the cell from being crushed or experiencing performance degradation.

[0022] Before processing, the protective sheets are stacked together. Due to the thinness of the metal sheets, static electricity can easily be generated between them during peeling. Under the influence of static electricity, the protective sheets will attract or stick together, making them difficult to separate. When the charge on the surface of an object accumulates to a certain level, static electricity is formed. Reducing the contact area can slow down the rate of charge accumulation, because the smaller the contact area, the slower the charge accumulation. In addition, reducing the contact area can make it easier for the charge to be released to other objects or the environment through the contacting objects, thereby reducing the electrostatic potential of the object's surface. Therefore, the protective sheets in this structure are arranged with recessed positions. The recessed positions reduce the contact area between the protective sheets, making it easier to separate them.

[0023] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions based on this utility model using techniques known in the art all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. A secondary battery cover protection sheet, characterized by: It includes a protective plate and a connecting plate, with the connecting plate extending into an extension portion and the protective plate fixed to the bottom of the connecting plate; The protective sheet has recessed areas on both the upper and lower end faces, with the recessed areas located at both ends and the middle of the protective sheet, respectively; the protective sheet also has notches at its ends.

2. The secondary battery cover protection sheet according to claim 1, characterized by: The number and position of the concave parts on the upper and lower end faces correspond to each other.

3. The secondary battery cover protection sheet according to claim 1, characterized in that: The extension section includes a first extension section and a second extension section, which are spaced apart to make the connecting piece U-shaped as a whole. Each of the first extension section and the second extension section is connected to a protective piece.

4. The secondary battery cover protection sheet according to claim 1, characterized by: The top surface of the connecting piece protrudes to form a convex pillar.

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