Battery monomer and battery pack

By designing protective components and explosion-proof valves spaced apart and protruding in the battery cells, the support and buffering capacity are enhanced, solving the problem of explosion-proof valve failure under impact conditions and improving the safety of the battery cells and the gas discharge efficiency during thermal runaway.

CN224217567UActive Publication Date: 2026-05-08SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202521011031.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-21
Publication Date
2026-05-08
Estimated Expiration
2035-05-21

AI Technical Summary

Technical Problem

When a battery cell is subjected to impact conditions, the external impact force can easily damage the explosion-proof valve, causing the explosion-proof valve to fail and affecting the safety of the battery cell.

Method used

A battery cell structure was designed, in which a protective component and an explosion-proof valve are spaced apart along a first direction, and a portion of the protective component protrudes away from the explosion-proof valve to enhance support and buffering capacity, reduce the failure risk of the explosion-proof valve, and form a gap between the protective component and the explosion-proof valve to facilitate the discharge of high-temperature and high-pressure gas.

Benefits of technology

The design of the protective components reduces the risk of explosion-proof valve failure, improves the safety of individual battery cells, and enables timely discharge of high-temperature and high-pressure gases in the event of thermal runaway, thereby reducing the danger of individual battery cells.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model provides a battery monomer and a battery pack, and relates to the technical field of batteries. The battery monomer has a first direction and comprises a shell, a pole, an electrode assembly, an anti-explosion valve and a protection piece, the shell is provided with a through hole penetrating in the first direction. The pole penetrates through the shell; the electrode assembly is arranged in the shell and is electrically connected with the pole; the anti-explosion valve is connected with the shell to seal and cover the through hole; the protection piece is connected with the side, away from the electrode assembly, of the shell in the first direction, the protection piece and the anti-explosion valve are arranged in a spaced mode in the first direction, the protection piece is provided with a ventilation opening penetrating in the first direction, and a part of the protection piece protrudes in the direction away from the anti-explosion valve in the first direction. According to the battery monomer provided by the invention, when the battery monomer encounters an impact working condition, the protection piece can bear the impact of part of external impact force on the anti-explosion valve, so that the failure risk of the anti-explosion valve is reduced, and the safety of the battery monomer is improved.
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