Battery cell, battery device, and electric device

By optimizing the isolation section structure of the electrode assembly and setting grooves and through holes, the problem of poor electrolyte wetting was solved, improving the performance and reliability of the battery cells and simplifying the manufacturing process.

CN224554444UActive Publication Date: 2026-07-24CONTEMPORARY 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
2025-06-23
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing battery cells are prone to poor electrolyte wetting of electrode components during use, resulting in poor performance and the risk of metal precipitation, which affects reliability.

Method used

Design an electrode assembly structure in which the minimum distance between the bent portions of the isolation sections in the first direction is 0.1mm-2mm, the bent portions are provided with grooves and through holes, and the electrode assembly is a wound or stacked structure. The isolation sections are arranged alternately to facilitate the wetting of the electrolyte, and the separation and support effects of the electrode assembly are improved by the support and insulating components.

Benefits of technology

It improves the wetting effect of electrolyte in electrode components, reduces the risk of metal precipitation, enhances the performance and reliability of battery cells, and simplifies manufacturing.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224554444U_ABST
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Abstract

This application provides a battery cell, a battery device, and an electrical device, belonging to the field of battery technology. The battery cell includes a casing, an electrolyte, and an electrode assembly. The electrolyte and the electrode assembly are both disposed within the casing, and the wall of the casing is configured to support the electrode assembly. The flat area of ​​the electrode assembly includes multiple electrode segments and multiple isolation segments. The multiple electrode segments include alternating and stacked first electrode segments and second electrode segments along a first direction, and an isolation segment is provided between each pair of adjacent electrode segments. The isolation segment is bent to form a body portion located between two adjacent second electrode segments and a bent portion located on the side of the second electrode segment near the wall. The bent portions of two adjacent isolation segments are stacked, and the minimum distance from the end of the bent portion connected to the body portion to the end away from the body portion in the first direction is 0.1mm-2mm, in order to alleviate the phenomenon that the overlap area of ​​the bent portions of two adjacent isolation segments is too large, making it difficult for the electrolyte to enter the electrode assembly.
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