Pressure relief mechanism, case, battery, and electric device

By setting an airflow obstruction component in the pressure relief mechanism, the high-temperature gas can be discharged in a directional manner, which solves the safety problem caused by the dispersion of high-temperature gas, improves the safety and space utilization of the battery, and enhances the stability of the pressure relief mechanism.

CN118511378BActive Publication Date: 2026-08-18CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202280088456.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-30
Publication Date
2026-08-18
Estimated Expiration
2042-09-30

AI Technical Summary

Technical Problem

During the depressurization process, the existing pressure relief mechanism allows high-temperature gas to be easily dispersed, which can damage the vehicle's wiring harness and other vulnerable parts, affecting vehicle safety performance. In addition, the traditional fairing is prone to deformation and failure, which affects battery safety.

Method used

An airflow obstruction component is installed between the valve body and the valve cover, forming a structure with partial obstruction and partial exhaust port. High-temperature gas is discharged directionally through the unobstructed area, avoiding direct spraying onto vulnerable parts. It is also integrated into the pressure relief mechanism to avoid occupying external space.

Benefits of technology

It effectively avoids damage to the vehicle wiring harness and vulnerable parts by high-temperature gases, improves the safety of the pressure relief mechanism and the space utilization of the battery, reduces the risk of fairing failure, and enhances the safety performance of the battery.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A pressure relief mechanism (10), a box (20), a battery (100) and an electric device. The pressure relief mechanism (10) comprises: a valve body (11) provided with a pressure relief port (111); a valve cover (12) covering the pressure relief port (111), the valve cover (12) is configured to move away from the valve body (11) under pressure to switch from a closed state to a pressure relief state; an airflow blocker (13) is arranged around the pressure relief port (111) and connected to the valve body (11) and the valve cover (12); when the valve cover (12) switches to the pressure relief state, the area around the pressure relief port (111) which is not blocked by the airflow blocker (13) forms an exhaust port (14) in communication with the outside. The guiding effect of the airflow blocker (13) can reduce the risk of high-temperature gas discharged through the pressure relief structure (10) spraying to the wire harness and other vulnerable components around the pressure relief mechanism (10), and improve the safety performance of the battery (100).
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