Embedded battery sealing ring capable of preventing short circuit caused by wall collision

Abstract

The utility model discloses an embedded battery sealing ring capable of preventing short circuit due to wall collision, which relates to the technical field of sealing rings and comprises a sealing ring top section, the bottom of the sealing ring top section is fixedly connected with a sealing ring base section, and one side, far away from the sealing ring top section, of the sealing ring base section is fixedly connected with a high cap. In actual use, the annular structure inner ring of the sealing ring top section, the sealing ring base section and the high-foot cover cap is used for allowing the positive pole lug of the battery to pass through, the high-foot cover cap sleeves the positive pole lug of the battery, a partition is formed between the positive pole lug and the steel shell through the long high-foot cover cap, and meanwhile sufficient filling allowance is achieved; according to the battery sealing ring, the gap possibly existing between the positive lug and the steel shell is filled, so that the wall collision risk between the positive lug and the steel shell can be reduced by the long high-foot cover cap, the battery sealing ring has high stability, and the problem that the existing battery sealing ring is easy to cause short circuit of the battery in the production process is solved.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, and in particular to an embedded anti-collision short-circuit battery sealing ring. Background Technology

[0002] In the manufacturing and application of cylindrical batteries, the sealing ring used in the battery cap is one of the key components to ensure battery performance and safety.

[0003] Currently, most existing battery sealing rings employ the following technologies: structural design optimization, including specially shaped explosion-proof grooves, reinforcing rib structures, and limiting structures; material modification and composite technologies, including high-performance rubber materials and composite materials, where the high-performance rubber materials utilize rubber materials with excellent chemical corrosion resistance and high and low temperature resistance; injection molding technology, including precision injection molding, which allows for precise control of the sealing ring's dimensional and shape accuracy, ensuring good fit between the sealing ring and other battery components and improving sealing performance; and surface treatment technologies, including coating technology and plasma treatment. Among these technologies, plasma treatment of the sealing ring surface can improve surface wettability and adhesion, enhancing the sealing effect between the sealing ring and the battery casing or other components. Buffering and pressure relief technology includes the installation of buffer components and the design of pressure relief channels. The buffer components are installed inside the sealing gasket, such as a buffer structure composed of a right-angle cylinder, piston disc, and support spring. The pressure relief channels are designed with appropriate pressure relief channels within the sealing ring or battery structure. When the internal pressure of the battery exceeds a certain limit, gas can be discharged through the pressure relief channels, preventing safety accidents such as battery explosions due to excessive internal pressure.

[0004] Currently, the sealing rings commonly used in battery caps are mostly of a "flat-foot" design. This traditional "flat-foot" sealing ring structure has revealed serious defects in actual use, as it cannot build an effective barrier between the positive electrode tab and the steel shell wall.

[0005] In the manufacturing process of cylindrical batteries, if an abnormal "tab fold" occurs, the positive tab can easily come into contact with the steel casing wall due to the lack of an effective protective structure, causing a short circuit. Even more serious is that some of these short circuits are difficult to detect in the pre-shipment inspection process, resulting in defective battery products entering the market. A short circuit is one of the most severe internal short circuits in a battery, potentially leading to catastrophic consequences such as cell fires and explosions. This undoubtedly poses an immeasurable safety hazard to consumers' lives and property, as well as to the entire battery application industry.

[0006] Therefore, there is room for structural optimization in the existing battery sealing rings, and they are prone to causing battery short circuits during the production process. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides an embedded anti-collision short-circuit battery sealing ring, which solves the problem that existing battery sealing rings have room for structural optimization and are prone to causing battery short circuits during the production process.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An embedded anti-collision short-circuit battery sealing ring includes a top section of the sealing ring, a base section of the sealing ring fixedly connected to the bottom of the top section of the sealing ring, and a high-leg cap fixedly connected to the side of the base section of the sealing ring away from the top section of the sealing ring.

[0010] Preferably, the high-foot cap is annular, and a groove is formed between the outer wall of the top section of the sealing ring and the outer wall of the base section of the sealing ring.

[0011] Preferably, the outer surfaces of both the base section and the top section of the sealing ring are coated with a layer of polytetrafluoroethylene (PTFE) coating, and a layer of pressure-sensitive adhesive coating is sprayed on the outer surface of the PTFE coating.

[0012] Preferably, the inner wall of the top section of the sealing ring is provided with a collection groove, and the outer surface of the top section of the sealing ring is provided with a ring of anti-slip texture.

[0013] Preferably, both the top section and the base section of the sealing ring are made of nitrile rubber.

[0014] Preferably, the inner walls of the top section and the base section of the sealing ring are both provided with flow guiding grooves, which are connected to the collection groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In actual use, the annular structure of the top section, base section, and high-leg cap of this sealing ring allows the positive electrode tab of the battery to pass through. The high-leg cap covers the positive electrode tab of the battery. The longer high-leg cap reduces the risk of collision between the positive electrode tab and the steel shell, giving this application higher stability and solving the problem that existing battery sealing rings are prone to short circuits during the production process.

[0017] Second, the anti-slip texture on the top section of the sealing ring can make good contact with the battery casing or other installation parts, increase the friction, and prevent the sealing ring from shifting when installed or when the battery is vibrated. The flow-guiding texture can guide any leaking liquid to collect in the collection tank, which facilitates subsequent liquid treatment or prevents the liquid from spreading further and affecting battery performance. Attached Figure Description

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is a structural diagram of the entire utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the sealing ring body of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a structural diagram of the sealing ring body of this utility model.

[0023] Legend: 11. Top section of sealing ring; 12. Anti-slip texture; 13. Pressure-sensitive adhesive coating; 14. Polytetrafluoroethylene coating; 15. Base section of sealing ring; 16. Flow guiding texture; 17. Collection tank; 18. High-leg cap. Detailed Implementation

[0024] This application provides an embedded anti-collision short-circuit battery sealing ring, which effectively solves the problem that existing battery sealing rings have room for structural optimization and are prone to causing battery short circuits during the production process.

[0025] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problem that existing battery sealing rings have room for structural optimization and are prone to causing battery short circuits during production. The overall idea is as follows:

[0026] To address the problems existing in the prior art, this utility model provides an embedded anti-collision short-circuit battery sealing ring, including a top section 11 of the sealing ring, a base section 15 of the sealing ring fixedly connected to the bottom of the top section 11, and a high-foot cap 18 fixedly connected to the side of the base section 15 away from the top section 11.

[0027] The high-foot cap 18 is annular, and a groove is formed between the top section 11 of the sealing ring and the outer wall of the base section 15 of the sealing ring.

[0028] The outer surfaces of the sealing ring base section 15 and the sealing ring top section 11 are both coated with a layer of polytetrafluoroethylene coating 14, and a layer of pressure-sensitive adhesive coating 13 is sprayed on the outer surface of the polytetrafluoroethylene coating 14.

[0029] The inner wall of the top section 11 of the sealing ring is provided with a collection groove 17, and the outer surface of the top section 11 of the sealing ring is provided with a ring of anti-slip texture 12.

[0030] Both the top section 11 and the base section 15 of the sealing ring are made of nitrile rubber.

[0031] The inner walls of the top section 11 and the base section 15 of the sealing ring are provided with flow guiding grooves 16, which are connected to the collection groove 17.

[0032] The top section 11 of the sealing ring is used for the passage of the positive electrode tab of the battery. A collection groove 17 is formed on its inner wall, and an anti-slip texture 12 is formed on its outer surface. It has a flow guiding texture 16 together with the inner wall of the sealing ring base section 15. A groove is formed between it and the outer wall of the sealing ring base section 15. Both the top section 11 and the sealing ring base section 15 are made of nitrile rubber.

[0033] Anti-slip texture 12: Increases friction with the battery casing or other mounting components to prevent displacement of the sealing ring.

[0034] Pressure-sensitive adhesive coating 13: Sprayed onto the outer surface of polytetrafluoroethylene coating 14.

[0035] Polytetrafluoroethylene coating 14: sprayed on the outer surface of the sealing ring base section 15 and the sealing ring top section 11.

[0036] The base section 15 of the sealing ring is fixedly connected to the top section 11 of the sealing ring at its bottom, and a high-foot cap 18 is connected to the side away from the top section 11 of the sealing ring. Both the base section 15 and the top section 11 of the sealing ring are made of nitrile rubber, and the base section 15 and the top section 11 of the sealing ring have flow-guiding textures 16.

[0037] Flow guide groove 16: guides any leaking liquid to the collection tank 17.

[0038] Collection tank 17: Collects the liquid guided by the flow guide groove 16.

[0039] High-leg cap 18: It is ring-shaped and covers the positive electrode tab of the battery, reducing the risk of the positive electrode tab hitting the steel shell.

[0040] Working principle:

[0041] In the first step, when this sealing ring is actually used, the inner ring of the annular structure of the top section 11 of the sealing ring, the base section 15 of the sealing ring, and the high-leg cap 18 is used for the passage of the positive electrode tab of the battery. The high-leg cap 18 covers the positive electrode tab of the battery. The longer high-leg cap 18 reduces the risk of collision between the positive electrode tab and the steel shell, so that this application has high stability.

[0042] The second step is that the anti-slip texture 12 provided on the top section 11 of the sealing ring can make good contact with the battery casing or other installation parts, increase the friction, and prevent the sealing ring from shifting when installed or when the battery is vibrated. The flow guiding texture 16 can guide any leaking liquid to collect in the collection tank 17, which facilitates subsequent liquid treatment or prevents the liquid from spreading further and affecting the battery performance.

[0043] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An embedded anti-collision short-circuit battery sealing ring, comprising a top section (11) of the sealing ring, characterized in that, The bottom of the top section (11) of the sealing ring is fixedly connected to the base section (15) of the sealing ring, and a high-foot cap (18) is fixedly connected to the side of the base section (15) of the sealing ring away from the top section (11).

2. The embedded anti-collision short-circuit battery sealing ring as described in claim 1, characterized in that: The high-foot cap (18) is annular, and a groove is formed between the outer wall of the top section (11) of the sealing ring and the base section (15) of the sealing ring.

3. The embedded anti-collision short-circuit battery sealing ring as described in claim 2, characterized in that: The outer surfaces of the sealing ring base section (15) and the sealing ring top section (11) are both coated with a layer of polytetrafluoroethylene coating (14), and a layer of pressure-sensitive adhesive coating (13) is sprayed on the outer surface of the polytetrafluoroethylene coating (14).

4. The embedded anti-collision short-circuit battery sealing ring as described in claim 3, characterized in that: The inner wall of the top section (11) of the sealing ring is provided with a collection groove (17), and the outer surface of the top section (11) of the sealing ring is provided with a ring of anti-slip texture (12).

5. An embedded anti-collision short-circuit battery sealing ring as described in claim 4, characterized in that: Both the top section (11) and the base section (15) of the sealing ring are made of nitrile rubber.

6. The embedded anti-collision short-circuit battery sealing ring as described in claim 5, characterized in that: The inner walls of the top section (11) and the base section (15) of the sealing ring are provided with flow guiding grooves (16), which are connected to the collection groove (17).

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