Pole piece die cutting method and system

A pole piece, die-cutting technology, applied in metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problem of high scrap rate, and achieve the effect of improving the yield rate, eliminating defects, and reducing the scrap rate of pole pieces
CN114473249AActive Publication Date: 2022-05-13楚能新能源股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
楚能新能源股份有限公司
Publication Date
2022-05-13

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Abstract

The invention relates to the technical field of pole piece processing, in particular to a pole piece die cutting method and system. Comprising the steps of collecting an upstream pole piece image of a pole piece die cutting station; judging whether flaws exist in the pole piece or not according to the gray value of the pole piece image, and if flaws exist, analyzing flaw width information and flaw position information from the pole piece image; and when the laser is processed to the flaw position, the laser executes a linear cutting instruction until the linear cutting length reaches the flaw width, and then the laser continues to execute a normal cutting period. According to the method, the defects can be recognized in advance before the pole piece is processed, the defect area is automatically skipped, and the rejection rate of the pole piece is reduced.
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Description

technical field

[0001] The invention relates to the technical field of pole piece processing, in particular to a pole piece die-cutting method and system. Background technique

[0002] In the lithium battery production process, the front-end pole piece production process consists of coating, rolling & pre-slitting, die-cutting & slitting. Among them, in the process of coating, rolling & pre-slitting, product defects such as pole piece foil leakage and pole piece cracking will occur. In order to improve the production yield and equipment utilization rate of this process, defective products will not be eliminated in this process. Instead, focus on the die-cutting & slitting process to identify defects through CCD defect detection and pick out defective pole pieces through marking.

[0003] The logic of the general die-cutting process in the industry to pick out defective pole pieces is as follows: figure 1 As shown, after the pole piece is loaded, it enters the processing st...

Claims

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