Explosion-proof valve, end cover assembly, battery, battery pack and electric equipment

By designing an explosion-proof valve including a valve body, a gland assembly and a transmission, the problem that the existing explosion-proof valve is not fully released during the pressure relief process is solved, and the internal pressure of the battery is completely discharged, which improves the safety of the battery.

CN119764734AActive Publication Date: 2025-04-04CHONGQING FUDI BATTERY RES INST CO LTD
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Patent Information

Application Number
CN202410850319.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-06-27
Publication Date
2025-04-04
Estimated Expiration
2044-06-27

AI Technical Summary

Technical Problem

During the pressure relief process of existing explosion-proof valves, spring rebound causes the valve to close, resulting in the internal pressure of the battery not being fully released, which may cause safety accidents.

Method used

An explosion-proof valve is designed, including the valve body, the gland assembly and the transmission. Through the transmission and the gland assembly, the valve is fully opened and maintained in an open state after reaching the preset pressure, ensuring that the internal pressure of the battery is completely leaked.

Benefits of technology

By completely opening the pressure relief hole, ensure that the pressure inside the battery is completely leaked, avoiding safety accidents caused by residual pressure inside the battery and improving the safety of the battery.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention discloses an anti-explosion valve, an end cover assembly, a battery, a battery pack and electric equipment, the anti-explosion valve comprises a valve body, a pressure relief valve, a pressure relief valve, a pressure relief valve and a pressure relief valve, the gland assembly is rotationally connected with the valve body so as to cover or open the pressure relief hole; the transmission part can be matched with the gland assembly; the gland assembly is matched with the transmission part and comprises a first state and a second state, in the first state, the gland assembly covers the pressure relief hole, and when preset pressure is reached, the gland assembly and the transmission part are in the second state; and at least part of the gland assembly does not cover the pressure relief hole and does not recover to the first state. According to the technical scheme provided by the invention, the safety performance of the battery can be improved.
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