Battery monomer, battery device and electric device

CN122055841APending Publication Date: 2026-05-15CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Filing Date
2024-09-20
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing batteries have poor reliability, insufficient strength of the pressure relief mechanism, and are prone to premature valve opening and pressure relief, which can lead to premature failure or explosion and fire of individual battery cells. In addition, the explosion pressure is inconsistent during the manufacturing process.

Method used

The pressure relief mechanism is made of iron. The bottom surface of the first groove is designed to be arc-shaped, and the arc surface is concave in the direction away from the groove opening. Combined with the multi-level groove structure and integral molding with the wall, stress concentration is reduced and structural strength and consistency are improved.

Benefits of technology

It improves the service life and reliability of individual battery cells, reduces the risk of premature valve opening in the pressure relief mechanism, and ensures the consistency of burst pressure of multiple battery cells.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN122055841A_ABST
    Figure CN122055841A_ABST
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Abstract

The invention provides a battery monomer, a battery device and a power utilization device, and relates to the field of batteries. The battery monomer comprises a shell and a pressure relief mechanism, the shell is provided with a wall part, and the pressure relief mechanism is arranged on the wall part. The base material of the pressure relief mechanism is iron. The pressure relief mechanism is provided with a first groove, and the pressure relief mechanism is configured to be cracked along at least part of the first groove when the pressure in the shell reaches a threshold value so as to release the pressure. Wherein the first groove is provided with a first groove bottom surface, the first groove bottom surface is an arc surface which is sunken in the direction away from a groove opening of the first groove, the arc surface is in an arc shape on the cross section of the first groove, and the cross section is perpendicular to the extending direction of the first groove. The groove bottom surface of the first groove is arranged to be the arc surface which is recessed along the direction far away from the groove opening of the first groove, so that material flowing is facilitated during punch forming of the first groove, stress concentration can be relieved, the bursting pressure of a plurality of battery monomers can be kept consistent during manufacturing of the plurality of battery monomers, and the reliability of the battery monomers can be improved.
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