Local double-press insulation cover plate for insulation film

Abstract

The utility model relates to electronic field of new energy technology, the application discloses a kind of local double-pressure insulation cover plate of insulating film, including lithium battery main body, battery pole is symmetrically arranged on the lithium battery main body top surface, the lithium battery main body top surface is adhered with insulating cover plate main body, insulating relief is opened in the insulating cover plate main body inside, pole protection relief is opened in the insulating relief inside, the position of pole protection relief corresponds with battery pole, the utility model can be completely in accordance with the requirement of battery pole height and XY direction size by product design height, by cold press forming process, PC can be changed form, and protruding design is made between battery end face and pole protection cover plate, so that there is gap between pole bottom end and insulating cover plate, solve the state between the base of traditional die cutting process and vertical end face-°, the problem that end face and battery positive and negative electrode end face are not conducive to the degree of coincidence.

Description

Technical Field

[0001] This utility model application relates to the field of electronics / new energy technology, specifically to a partially double-pressure insulating cover plate for insulating film. Background Technology

[0002] New energy lithium batteries are a type of high-efficiency and environmentally friendly rechargeable battery that uses lithium ions as charge carriers. Energy storage and release are achieved through the intercalation and deintercalation reactions between positive and negative electrode materials. Its core components include positive electrode, negative electrode, electrolyte, and separator. It has advantages such as high energy density, long cycle life, and low self-discharge rate, and is widely used in electric vehicles, energy storage systems, and consumer electronics. With technological advancements, lithium batteries have been continuously optimized in terms of safety, fast charging performance, and cost control, becoming one of the key technologies for promoting the clean energy transition and contributing to the achievement of global carbon neutrality goals. The insulating cover is an insulating film that covers the battery terminals and their end faces.

[0003] In response to the structural requirements of new energy lithium batteries, the existing insulating materials are formed using traditional die-cutting processes. For products with convex bulge requirements, the purpose is to improve the protection of the positive and negative terminals of the battery by the insulating products. The traditional convex bulge process has the base and the vertical end face at an angle of 60-80°, which is not conducive to the fit between the end face and the positive and negative terminal faces of the battery. Summary of the Invention

[0004] To address the issue that traditional die-cutting processes result in the base being at an angle of 60-80° to the vertical end face, which is detrimental to the fit between the end face and the positive and negative terminals of the battery, this invention provides a partially double-pressed insulating cover plate to solve the aforementioned problem.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A partially double-pressure insulating cover plate includes a lithium battery body, on the top surface of which battery terminals are symmetrically arranged, and an insulating cover plate body is bonded to the top surface of the lithium battery body. An insulating protrusion is formed inside the insulating cover plate body, and a terminal protection protrusion is formed inside the insulating protrusion. The terminal protection protrusion corresponds to the position of the battery terminals.

[0007] Furthermore, the connection between the insulating cover plate body and the insulating protrusion is set as an arc-shaped connection surface.

[0008] Furthermore, an arc-shaped surface matching the shape of the battery terminal is provided at the connection between the insulating raised plate and the terminal protection raised plate, and the top surface of the terminal protection raised plate is bonded and fixed to the top surface of the battery terminal.

[0009] Furthermore, the main body of the insulating cover is made of multi-layer PC material, and the multi-layer PC inside the main body of the insulating cover is bonded together with acrylic double-sided adhesive.

[0010] Furthermore, the insulating convex plate is located at the center of the top surface of the lithium battery body and the top surface of the battery terminal post.

[0011] Furthermore, the shape of the insulating cover body matches the shape of the top surface of the lithium battery body, and the shape of the insulating convex plate is a rounded rectangle that matches the shape of the insulating cover body.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, the product design height can fully meet the requirements of battery terminal height and XY direction dimensions. Through cold pressing molding process, the PC shape can be changed, and a protrusion design can be made between the battery end face and the terminal protective cover, so that there is a gap between the bottom of the terminal and the insulating cover. This solves the problem that the traditional die-cutting process has a base and vertical end face at 60-80°, which is not conducive to the fit between the end face and the positive and negative terminal faces of the battery.

[0014] 2. In this utility model, the double protrusion design of the product can cause the protrusion structure to deform first when the internal pressure of the battery is abnormal, assisting the independent pressure relief valve to release pressure, reducing the overall deformation of the battery, playing a safety protection role, and avoiding the risk of battery swelling and contact with other equipment, resulting in damage. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a top view of a structural diagram according to an embodiment of this application;

[0017] Figure 2 yes Figure 1 The above-view three-dimensional schematic diagram of the structure in the embodiment shown.

[0018] The meanings of the labels in the attached diagram are as follows: 1. Lithium battery body; 2. Battery terminals; 3. Insulating cover body; 4. Insulating convex plate; 5. Terminal protection convex plate. Detailed Implementation

[0019] To make the purpose, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] Reference Figure 1 and Figure 2 A partially double-pressure insulating cover plate includes a lithium battery body 1, battery terminals 2 symmetrically arranged on the top surface of the lithium battery body 1, an insulating cover plate body 3 bonded to the top surface of the lithium battery body 1, an insulating protrusion 4 inside the insulating cover plate body 3, and a terminal protection protrusion 5 inside the insulating protrusion 4. The terminal protection protrusion 5 corresponds to the position of the battery terminals 2 to avoid the situation where the insulating protrusion 4 and the bottom end of the battery terminals 2 are not properly attached.

[0021] Specifically, the connection between the insulating cover body 3 and the insulating protrusion 4 is set as an arc-shaped connection surface, and the connection between the insulating protrusion 4 and the electrode protection protrusion 5 is provided with an arc-shaped surface that matches the shape of the battery electrode 2. The top surface of the electrode protection protrusion 5 is bonded and fixed to the top surface of the battery electrode 2, thereby improving the stability of the bonding between the insulating cover body 3 and the lithium battery body 1 and the insulation effect.

[0022] As an optimization solution, such as Figure 1 and Figure 2 As shown, the insulating cover body 3 is made of multi-layer PC material. The multi-layer PC inside the insulating cover body 3 is bonded together with acrylic double-sided adhesive, which facilitates the production process of controlling the thickness of the insulating cover body 3.

[0023] Specifically, the insulating raised plate 4 is located at the center of the top surface of the lithium battery body 1 and the top surface of the battery terminal 2. The shape of the insulating cover body 3 matches the shape of the top surface of the lithium battery body 1. The shape of the insulating raised plate 4 is a rounded rectangle that matches the shape of the insulating cover body 3, which makes it easy to control the bonding area between the insulating cover body 3 and the lithium battery body 1, and avoids the problem of weak bonding and reduced insulation effect caused by too small bonding area.

[0024] Working Principle: Based on the specific dimensions of the battery, the PC can be shaped using a cold-pressing process to suit practical applications. This allows the insulating cover body 3 to accommodate insulation of different thicknesses (0.175 / 0.25 / 0.3mm), offering broad practical application value. One side of the lithium battery body 1 can be fitted with acrylic double-sided adhesive with a strength control of >1500g / 25mm. Through the interlocking force between the rubber rollers and steel rollers of the die-cutting equipment, effective bonding with any side of the PC is achieved. Furthermore, considering the dimensional design requirements of the lithium battery body 1 and the battery terminals 2, large-area embossing and partial embossing are used to achieve a double-embossed product state. This, combined with the dimensions of the battery terminals 2, allows for… The insulating cover body 3 completely and tightly covers the lithium battery body 1, providing insulation and improving safety performance. When the insulating cover body 3 covers the end face of the lithium battery body 1, the terminal protection protrusion 5 is in contact with the top surface of the battery terminal 2. At the same time, the insulating cover body 3 is located between the battery terminal 2 and the lithium battery body 1, avoiding the problem of unstable contact between the insulating cover body 3 and the battery terminal 2 and the lithium battery body 1. In addition, when the internal pressure of the lithium battery body 1 expands abnormally, the deformation of the lithium battery body 1 can preferentially fill the interior of the insulating protrusion 4, thereby preventing the shape of the lithium battery body 1 and the insulating cover body 3 from deforming. This provides safety protection and avoids the risk of damage caused by the battery expanding and coming into contact with other equipment.

[0025] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A partially double-pressure insulating cover plate with an insulating film, comprising a lithium battery body (1), characterized in that: The lithium battery body (1) has battery terminals (2) symmetrically arranged on its top surface. An insulating cover plate body (3) is bonded to the top surface of the lithium battery body (1). An insulating protrusion (4) is opened inside the insulating cover plate body (3). A terminal protection protrusion (5) is opened inside the insulating protrusion (4). The terminal protection protrusion (5) is positioned corresponding to the battery terminals (2).

2. The insulating film partially double-pressed insulating cover plate according to claim 1, characterized in that: The connection between the insulating cover plate body (3) and the insulating convex plate (4) is set as an arc-shaped connection surface.

3. The insulating film partially double-pressed insulating cover plate according to claim 1, characterized in that: The connection between the insulating protrusion (4) and the terminal protection protrusion (5) is provided with an arc-shaped surface that matches the shape of the battery terminal (2), and the top surface of the terminal protection protrusion (5) is bonded and fixed to the top surface of the battery terminal (2).

4. The insulating film partially double-pressed insulating cover plate according to claim 1, characterized in that: The insulating cover body (3) is made of multi-layer PC material, and the multi-layer PC inside the insulating cover body (3) is bonded together with acrylic double-sided adhesive.

5. The insulating film partially double-pressed insulating cover plate according to claim 4, characterized in that: The insulating convex plate (4) is located at the center of the top surface of the lithium battery body (1) and the top surface of the battery terminal (2).

6. The insulating film partially double-pressed insulating cover plate according to claim 1, characterized in that: The shape of the insulating cover body (3) matches the shape of the top surface of the lithium battery body (1), and the shape of the insulating convex plate (4) is a rounded rectangle that matches the shape of the insulating cover body (3).

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