Battery pole piece scratch detection system and detection method

Abstract

The invention relates to a battery pole piece scratch detection system and detection method, thereby solving technical problems of low precision, low efficiency and detection lag of battery defect detection by adopting manual verification in the prior art as well as high false detection rate and low grading precision of a general automatic detection system. The system comprises an object supporting platform for loading a battery pole piece and a rotating belt; a supporting box is arranged on the rotating belt; a sorting module is arranged on the rotating belt behind the supporting box; an image acquisition module is arranged in the supporting box and sends acquired information to a processing module for scratch target detection; meanwhile, a deep learning CNN network is adopted for detecting and extracting a scratch target of the battery pole piece and calculating an evaluation score of the scratch target, and the grade of the battery pole piece is judged according to multi-grade division intervals; the battery pole piece is sorted according to the scratch grade sorting module, so that the detection accuracy is higher; and grading is conducted in a multi-stage mode, and the gradingprecision is high.

Description

technical field [0001] The invention relates to the technical field of battery defect detection, in particular to a battery pole piece scratch detection system and detection method. Background technique [0002] Electrode scratches are a kind of lithium battery electrode defects, which are mainly caused by foreign matter or large particles stuck in the slit gap or coating gap during the production process, among which scratches are a common form of linear defects in electrode sheets . The main mechanical causes are as follows: [0003] 1. Due to the poor quality of the base material, there are foreign objects blocking the coating gap between the coating roller and the backing roller, resulting in strangle marks; [0004] 2. Indentation due to mold lip damage. [0005] Man-made causes are less likely to occur on the battery production line. In some cases, scratches are caused by manual bumps and accidental misoperations, including scratches caused by improper use of tools,...

AI Technical Summary

Problems solved by technology

[0011] A battery pole piece scratch detection system and detection method proposed by the present invention can solve the problems of low accuracy, low efficiency, and hysteresis in detection of battery defects in the prior art by manual methods, and the problems of general automatic detection systems Existing technical problems of serious misdetection and low classification accuracy

Images