Battery cover structure

Abstract

The utility model discloses a battery middle cover structure relates to battery component technical field. The battery middle cover structure, including seal cover, valve body, sealing washer and sealing glue, valve body, sealing washer and sealing glue are located seal cover inboard, the seal cover includes lid and step, the step is connected in the lid top, the step is provided with annular. The battery middle cover structure, is provided with annular step, and the primary sealing area and secondary sealing area are formed through the step and valve body cooperation, then utilize sealing washer and sealing glue respectively in primary sealing area and secondary sealing area carry out primary sealing box secondary sealing, form double -layer sealing structure, compared with the sealing mode of traditional single sealing washer, the sealing performance of battery middle cover has been greatly improved, effectively prevent liquid leakage and gas permeation, guarantee the stability of battery internal environment, reduce the security risk of battery because of the poor sealing.

Description

Technical Field

[0001] This utility model relates to the field of battery component technology, specifically to a battery cover structure. Background Technology

[0002] During battery use, the sealing cap, as an important component of the battery, plays a crucial role in the battery's safety and stability through its sealing performance.

[0003] Existing battery cover structures have certain shortcomings in sealing. A single sealing ring is insufficient to effectively prevent liquid leakage and gas infiltration, leading to problems such as electrolyte leakage and internal gas escape during battery use. This not only affects battery lifespan but may also cause safety hazards such as short circuits, fires, or even explosions. Therefore, a battery cover structure design with more reliable sealing performance is urgently needed.

[0004] A single sealing ring is insufficient to effectively prevent liquid leakage and gas infiltration, which can easily lead to problems such as electrolyte leakage and internal gas escape, affecting battery life and potentially causing safety hazards. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a battery cover structure, which solves the problem that the single sealing ring method is difficult to effectively prevent liquid leakage and gas infiltration, and is prone to problems such as electrolyte leakage and internal gas escape, which will affect the service life of the battery and may also lead to safety hazards.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a battery cover structure, including a sealing cover and a valve body, wherein the valve body is located inside the sealing cover, the sealing cover is provided with a cover body, and the top of the cover body extends with a step, wherein the step is set as an annular shape;

[0007] The sealing cover is provided with a primary sealing area and a secondary sealing area. A convex ring is provided on the outside of the valve body. The convex ring is connected to the inside of the step. The primary sealing area is located below the convex ring, and the secondary sealing area is located above the convex ring. The primary sealing area and the secondary sealing area achieve multi-stage sealing for the sealing cover and the valve body.

[0008] Preferably, the valve body is inserted into the inner side of the cover body and threadedly connected to the cover body, and the valve body is located inside the step.

[0009] Preferably, a sealing ring is provided in the primary sealing area, the upper part of the sealing ring being tightly attached to the valve body, and the lower part of the sealing ring being tightly attached to the cover body.

[0010] Preferably, the secondary sealing area is filled with sealant, which fills the gap between the valve body and the step for complete sealing.

[0011] Its beneficial effects are as follows:

[0012] This invention features an annular step, which, in conjunction with the valve body, forms a primary sealing area and a secondary sealing area. A sealing ring and sealant are then used to perform primary and secondary sealing in both areas, creating a double-sealing structure. Compared to traditional single-ring sealing methods, this significantly improves the sealing performance of the cap, effectively preventing liquid leakage and gas infiltration, ensuring the stability of the battery's internal environment, and reducing safety risks caused by poor sealing. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] In the diagram: 1. Sealing cap; 11. Cover body; 12. Step; 2. Valve body; 3. Sealing ring; 4. Sealing adhesive. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] This application provides a battery cover structure that solves the problem that a single sealing ring method is difficult to effectively prevent liquid leakage and gas infiltration, and is prone to problems such as electrolyte leakage and internal gas escape, which can affect the battery's service life and may also lead to safety hazards. It achieves a dual sealing effect and effectively improves the sealing performance of the battery cover.

[0018] This utility model discloses a battery cover structure.

[0019] Example 1:

[0020] According to the appendix Figure 1 As shown, a battery cover structure includes a sealing cover 1 and a valve body 2. The valve body 2 is located inside the sealing cover 1. The sealing cover 1 is provided with a cover body 11. A step 12 extends from the top of the cover body 11 and is set as an annular shape.

[0021] The sealing cover 1 is provided with a primary sealing area and a secondary sealing area. The valve body 2 is provided with a convex ring on the outside. The convex ring is connected to the inner side of the step 12. The primary sealing area is located below the convex ring, and the secondary sealing area is located above the convex ring. The sealing cover 1 and the valve body 2 are sealed in multiple stages through the primary sealing area and the secondary sealing area.

[0022] This utility model features an annular step 12, which, in conjunction with the valve body 2, forms a primary sealing area and a secondary sealing area. Then, a sealing ring 3 and a sealing adhesive 4 are used to perform primary and secondary sealing in the primary and secondary sealing areas respectively, forming a double sealing structure. Compared with the traditional single sealing ring method, this greatly improves the sealing performance of the battery cover, effectively prevents liquid leakage and gas infiltration, ensures the stability of the internal environment of the battery, and reduces the safety risks caused by poor sealing.

[0023] Furthermore, the valve body 2 is inserted into the inside of the cover 11 and threadedly connected to the cover 11, with the valve body 2 located inside the step 12.

[0024] Specifically disclosed, a sealing ring 3 is provided in the primary sealing area. The upper part of the sealing ring 3 is tightly attached to the valve body 2, and the lower part of the sealing ring 3 is tightly attached to the cover 11. Through the elastic deformation of the sealing ring 3, a first sealing barrier is formed between the valve body 2 and the cover 11, effectively blocking the passage of liquid and gas.

[0025] Example 2:

[0026] According to the appendix Figure 1 As shown, a battery cover structure includes a sealing cover 1, a valve body 2, a sealing ring 3, and a sealing adhesive 4. The valve body 2, the sealing ring 3, and the sealing adhesive 4 are located inside the sealing cover 1. The sealing cover 1 includes a cover body 11 and a step 12. The step 12 is connected to the top of the cover body 11 and is set as an annular shape.

[0027] It is particularly important to emphasize that the secondary sealing area is filled with sealant 4, which fills the gap between the valve body 2 and the step 12 for complete sealing. The sealant 4 further enhances the sealing effect and forms a second sealing barrier to ensure the airtightness of the battery's internal environment.

[0028] Working principle: First, a sealing ring 3 of appropriate size is placed in the primary sealing area; then, the valve body 2 is inserted into the inner side of the step 12, ensuring that the upper and lower surfaces of the sealing ring 3 are tightly fitted to the valve body 2 and the cover 11 respectively. Tightening the valve body 2 applies a certain pressure to the sealing ring 3, causing it to undergo a certain elastic deformation, thus enhancing the sealing effect; finally, sealant 4 is injected into the secondary sealing area above the valve body 2, evenly filling the gap between the valve body 2 and the step 12. After the sealant 4 cures, a complete double-sealing structure is formed, effectively ensuring the battery's sealing performance and safety.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A battery cover structure, comprising a sealing cover (1) and a valve body (2), wherein the valve body (2) is located inside the sealing cover (1), characterized in that, The sealing cover (1) is provided with a cover body (11), and a step (12) extends from the top of the cover body (11), and the step (12) is configured as an annular shape; The sealing cover (1) is provided with a primary sealing area and a secondary sealing area. The valve body (2) is provided with a convex ring on the outside. The convex ring is connected to the inside of the step (12). The primary sealing area is located below the convex ring, and the secondary sealing area is located above the convex ring. The sealing cover (1) and the valve body (2) are sealed in multiple stages through the primary sealing area and the secondary sealing area.

2. The battery cover structure according to claim 1, characterized in that, The valve body (2) is inserted into the inside of the cover (11) and threadedly connected to the cover (11). The valve body (2) is located inside the step (12).

3. The battery cover structure according to claim 2, characterized in that, A sealing ring (3) is provided in the primary sealing area. The upper part of the sealing ring (3) is in close contact with the valve body (2), and the lower part of the sealing ring (3) is in close contact with the cover body (11).

4. The battery cover structure according to claim 2, characterized in that, The secondary sealing area is filled with sealant (4), which fills the gap between the valve body (2) and the step (12) for complete sealing.

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