Battery monomer, battery device and electric device

CN224190953UActive Publication Date: 2026-05-01CONTEMPORARY 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
2025-03-12
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

The reliability of individual battery cells needs to be improved, especially since welding defects such as shrinkage cavities and cracks are prone to occur during the welding process, affecting the connection reliability and sealing of the casing and terminal components.

Method used

By controlling the ratio of the effective penetration depth h to the maximum penetration depth H of the weld to be h/H as 0.3-1, the design of the overlap angle between the transition structure and the shell wall and the step structure during the welding process is optimized to ensure a reasonable distribution of the length and area of ​​the interface zone and reduce the generation of welding defects.

Benefits of technology

It improves the connection reliability and sealing between the casing and the terminal components, simplifies the welding process, reduces welding difficulty, and enhances the overall reliability and production efficiency of the battery cell.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224190953U_ABST
    Figure CN224190953U_ABST
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Abstract

The utility model discloses a battery monomer, a battery device and a power utilization device, and relates to the technical field of batteries. The battery monomer comprises a shell, an electrode component and a pole component, wherein the shell comprises a first shell wall; the electrode component is arranged in the shell; the pole component is arranged on the first shell wall and comprises a pole body and a switching structure, the pole body is connected with the pole component, and the switching structure is in insulation fit with the pole body; wherein the switching structure and the first shell wall are welded to form a welding seam, the maximum fusion depth of the welding seam is H, the effective fusion depth of the welding seam is h, and h / H is 0.3-1. According to the technical scheme, by reasonably controlling the ratio of the effective penetration h to the maximum penetration H of the weld joint, the possibility of generating welding defects such as shrinkage cavities and cracks at the welding position of the switching structure and the first shell wall is reduced, so that the connection reliability and the sealing performance between the shell and the pole component are improved, and the reliability of the battery monomer is improved.
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