Battery cell winding method and battery cell winding device

By detecting the misalignment parameters of the electrode tabs and performing necessary correction processing, the problems of poor electrode tab alignment and misalignment of the identification component during the battery cell winding process were solved, realizing automated correction and efficient barcode scanning of the battery cells, and reducing the scrap rate of battery cells and labor costs.

CN119764521BActive Publication Date: 2026-04-10CALB GROUP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CALB GROUP CO LTD
Filing Date
2024-12-27
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

During the cell winding process, after the positive and negative electrode sheets and the separator are replaced, poor alignment of the electrode tabs leads to the scrapping of the cell. In addition, the position of the identification component is offset, which affects the scanning operation, increases costs and the lag of manual adjustment.

Method used

By detecting the electrode misalignment parameters, it is determined whether the misalignment is within the preset misalignment range, and whether correction is required. An identification piece is then attached to the outside of the battery cell. If necessary, a rubbing operation is performed to correct the position of the electrode and the identification piece. Automated correction is achieved by using the adhesive roller and electrode misalignment detection device in the winding device.

Benefits of technology

It improves the alignment between the electrode tabs and the identification components, reduces the scrap rate of battery cells, simplifies the scanning operation, and reduces manual adjustment time and costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of battery processing, and discloses a battery cell winding method and a battery cell winding device. The steps of the battery cell winding method include winding a positive electrode sheet, a negative electrode sheet and a diaphragm to form a battery cell; an electrode lug dislocation parameter is obtained, and it is judged whether the electrode lug dislocation parameter is in a preset dislocation interval; when the electrode lug dislocation parameter is not in the preset dislocation interval, the product is determined as unqualified and directly discarded; when the electrode lug dislocation parameter is in the preset dislocation interval, if the electrode lug dislocation parameter is in a non-correction range, a recognition piece is normally attached to the outside of the battery cell without rubbing, and the next process is entered; if the electrode lug dislocation parameter is in a correction range, the recognition piece is attached to the outside of the battery cell, and there is a deviation between the recognition piece and a preset position, so that the battery cell is rubbed to make the electrode lug and the recognition piece both located at the preset position. The battery cell winding method and the battery cell winding device can guarantee that the electrode lug and the recognition piece after winding are both in an alignment state, reduce the battery cell rejection rate, and make it easier to scan a code.
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Citation Information

Patent Citations

  • Pole core winding device

    CN219642889U

  • Battery cell rubbing device and battery cell production line

    CN221861705U