Battery cells, battery devices and electrical equipment

By using a sealing component design consisting of guide parts and body parts with different outer diameters in the battery cell, the problem of poor concentricity between the sealing component and the electrode terminals is solved, resulting in lower contact resistance and energy loss, and improving the reliability and assembly accuracy of the battery cell.

CN224520023UActive Publication Date: 2026-07-17CONTEMPORARY 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
2025-04-03
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, the concentricity between the sealing component and the electrode terminal is poor, which leads to increased contact resistance and energy loss, low assembly accuracy, and affects the reliability of the battery cell.

Method used

The sealing component is designed with guide parts and body parts of different outer diameters. The guide parts are positioned by the second recess of the electrode terminal, and an avoidance groove is provided at the connection between the body part and the guide parts to improve concentricity and assembly accuracy.

Benefits of technology

It improves the concentricity between the sealing component and the electrode terminal, reduces contact resistance and energy loss, and enhances the reliability and assembly accuracy of the battery cell.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224520023U_ABST
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Abstract

This application discloses a battery cell, a battery assembly, and an electrical device. The battery cell includes: a housing, including a wall portion and having a lead-out hole; an electrode assembly housed within the housing; electrode terminals fixed to the lead-out hole, each electrode terminal having a first recess and a second recess arranged sequentially along the axial direction of the electrode assembly, the second recess located on the side of the first recess closer to the electrode assembly; and a sealing member, including a body portion and a guide portion connected axially, the guide portion connected to the bottom wall surface of the body portion facing the electrode assembly, at least a portion of the body portion being disposed within the first recess, and the guide portion being disposed within the second recess; the outer diameter of the guide portion is smaller than the maximum outer diameter of the body portion, and the bottom wall surface of the body portion has a first clearance groove recessed in a direction away from the electrode assembly, the first clearance groove extending radially along the electrode assembly to the outer wall surface of the guide portion. This application can improve the concentricity between the sealing member and the electrode terminals and reduce assembly interference between them.
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