Battery cell, battery device, and electric device

CN224342458UActive Publication Date: 2026-06-09CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Filing Date
2025-05-20
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In the event of thermal runaway, the internal pressure of existing battery cells cannot be effectively released, which poses a high risk of fire or explosion. Furthermore, the contact between the pressure relief mechanism and the electrode assembly can easily lead to air stagnation, affecting reliability.

Method used

A battery cell is designed in which the weak part of the pressure relief mechanism is located on the bottom wall of the first groove, away from the electrode assembly, and is broken when the internal pressure reaches a threshold to release the pressure. The design of the pressure relief hole and the protrusion ensures that the pressure relief mechanism is away from the electrode assembly, reducing the risk of air suffocation.

Benefits of technology

It improves the reliability of individual battery cells, reduces the risk of fire and explosion, extends service life, and saves on material costs for the pressure relief mechanism.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224342458U_ABST
    Figure CN224342458U_ABST
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Abstract

The application provides a battery monomer, a battery device and a power utilization device. The battery monomer comprises a shell, an electrode assembly and a pressure relief mechanism. The shell comprises a first wall. The electrode assembly is accommodated in the shell, and the electrode assembly and the first wall are arranged along a first direction. The pressure relief mechanism is arranged on the first wall, and the pressure relief mechanism comprises a weak part. Along the first direction, the pressure relief mechanism has a first surface facing the electrode assembly, the first surface is provided with a first groove, and the weak part is formed on a groove bottom wall of the first groove. Such a battery monomer improves the response speed of the weak part, realizes rapid pressure relief of the pressure relief mechanism, reduces the risk of fire and explosion of the battery monomer, and improves the reliability of the battery monomer.
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