Method for manufacturing pole piece, pole piece, battery cell and electric device

By coating and curing an adhesive layer on the electrode cutting end face, the risk of short circuit caused by burrs is solved, the battery safety performance and capacity are improved, and continuous production is achieved.

CN122455692APending Publication Date: 2026-07-24CONTEMPORARY 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
2025-01-24
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Burrs and wires generated during the slitting process of existing battery electrodes pose a short circuit risk, affecting battery safety performance and capacity.

Method used

Apply adhesive to the slit end face of the electrode. Use an adhesive applicator with an applicator roller parallel to the slit end face to coat the burrs on the slit end face. Then cure the adhesive with ultraviolet light, electron beam or heat curing to prevent the adhesive from covering the upper and lower surfaces of the electrode.

Benefits of technology

This reduces the risk of burrs puncturing the separator, improves battery safety, and ensures both effective battery capacity and production efficiency.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN122455692A_ABST
    Figure CN122455692A_ABST
Patent Text Reader

Abstract

A preparation method of a pole piece, the pole piece, a battery cell and an electric device can improve the safety performance of the battery cell. The preparation method comprises: performing glue coating treatment on a slitting end face of a pretreated pole piece in the process of conveying the pretreated pole piece to obtain the pole piece, the pretreated pole piece comprising a current collector and a film layer arranged on at least one side surface of the current collector; a glue coating device for the glue coating treatment comprises a glue feeding roller, the glue feeding roller is arranged opposite to the slitting end face and an axis of the glue feeding roller is parallel to the slitting end face.
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