Tab flattening device of winding machine

By designing a winder ear smoothing device including a motor-driven smoothing plate and air blowing assembly, the problem of damage to the ear during cutting and insertion of the electrode is solved, the production efficiency and yield rate are improved, and the performance and safety of the battery are ensured.

CN119702766APending Publication Date: 2025-03-28ZHEJIANG TIANNENG NEW ENERGY CO LTD +1
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Patent Information

Application Number
CN202411817514.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

During the production process of winding section batteries, the pole ears are prone to fold, tear or fly belts during cutting and insertion, resulting in high product defect rate, and scraping the pole ears may cause battery short circuit, affecting performance and safety.

Method used

A winder ear smoothing device is designed, including a motor-driven smoothing plate and air blowing assembly. The stroke plate moves through the motor and moves inwardly on the slide rail to fit the negative electrode sheet and smooth the ear. After smoothing, during the return of the smoothing plate, the air blowing assembly is driven to clean the impurities on the surface of the negative electrode sheet, and finally cut the negative electrode sheet by cutting the cut assembly.

Benefits of technology

It effectively avoids damage to the ear during cutting and insertion of the electrode, improves production efficiency and yield, and ensures battery performance and safety.

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Abstract

The invention relates to a winding machine tab smoothing device which comprises a cutter frame, a cutting assembly, a guide plate support, smoothing assemblies and an air blowing assembly, the cutter frame is hollow and used for conveying negative plates, the smoothing assemblies are arranged on the two sides of a negative plate conveying path, and each smoothing assembly comprises a motor arranged on the cutter frame and a smoothing plate driven by the motor; the motor drives the flattening plate to move and slide inwards at the same time, so that the flattening plate is attached to the negative pole piece to continue to move to flatten the pole lug, and the motor drives the air-blowing assembly to perform air-blowing cleaning on the surface of the flattening plate in the process of driving the flattening plate to flatten and then returning, and a flattening roller is rotationally arranged in the flattening plate; the flattening roller rotates in the direction opposite to the advancing direction in the process of moving along with the flattening plate so as to flatten the surface of the negative pole piece, the cutting assembly is used for cutting the flattened negative pole piece, and the problems that in the piece feeding process after cutting off, the tab is prone to being folded, torn and flying, and the surface of the tab is prone to being damaged are solved.
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