Battery explosion-proof valve and battery

The integrated injection-molded design of the protective shell and cover simplifies the manufacturing process of the battery explosion-proof valve, reduces costs, and improves the protective effect of the diaphragm. It solves the problems of complex processing and easy diaphragm failure in the existing technology and meets the IP6K9K protection level.

CN223514178UActive Publication Date: 2025-11-04EVE ENERGY CO LTD
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Patent Information

Application Number
CN202422809968.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-18
Publication Date
2025-11-04
Estimated Expiration
2034-11-18

AI Technical Summary

Technical Problem

The existing battery explosion-proof valve has a complex manufacturing process, requiring the separate production of the shell and protective cover, which increases the processing cost, and the diaphragm is easily affected by the environment and fails.

Method used

The protective shell and cover are connected by one-piece injection molding. The ejector pin is set on the top wall of the protective cover, and the diaphragm covers the pressure relief hole. The gas inside the battery drives the diaphragm to deform and puncture the ejector pin, so that the gas can be released quickly. The diaphragm covers the inner cavity of the shell body to provide protection.

Benefits of technology

The manufacturing process of the battery explosion-proof valve has been simplified, the cost has been reduced, and the diaphragm failure has been effectively avoided, meeting the IP6K9K protection level.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223514178U_ABST
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Abstract

The utility model relates to the technical field of batteries, in particular to a battery explosion-proof valve and a battery. The battery explosion-proof valve comprises a protective shell, an ejector pin and a diaphragm, the protective shell comprises a shell body and a protective cover which are integrally connected in an injection molding mode, the shell body is in a barrel shape with two open ends, radial exhaust holes are formed in the peripheral wall of the shell body, the protective cover is connected to the opening in one end of the shell body in a plugging mode, and the opening in the other end of the shell body is a pressure relief hole. The pressure relief hole is communicated with the radial exhaust hole and the interior of the battery, the ejector pin is arranged on the top wall of the protective cover and located in the inner cavity of the shell body, the diaphragm covers the pressure relief hole, and gas exhausted from the interior of the battery can drive the diaphragm to deform towards the ejector pin so that the diaphragm can be punctured by the ejector pin. According to the battery explosion-proof valve, the processing technology of the battery explosion-proof valve can be simplified, the processing cost is low, and the failure of the diaphragm can be avoided.
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