An online detection and classification device and method for lithium-ion battery pole pieces

Abstract

The invention relates to an on-line detection grading device for a lithium ion battery pole piece and a method thereof. In the device, image data of the lithium ion battery pole piece are acquired by using an embedded visual recognition device and are analyzed and processed to judge whether the appearance quality of the pole piece meets requirements or not, so that the actions of a turnover part and a grading part are controlled to realize real-time on-line double-side detection and grading of the electrode pole piece. The method has high detection speed; generally, the detection of the frontside and the back side of one electrode pole piece can be finished within 1 second, so that the production efficiency is increased; if the pole piece is manually detected, longer time is required to be taken; the detection accuracy is high; the embedded visual detection technology is adopted, so that the accuracy is high and the stability is also realized, and a detection result has high uniformity; the running time is long, namely a detection system can uninterruptedly run for 24 hours, so that the productivity is improved and the labor cost is saved; and on-line detection can be realized, so that the on-line detection of the electrode pole piece is realized, the interference in a manual operation process is reduced, and the productivity is improved.

Description

technical field [0001] The invention relates to a detection device and method for a pole piece of a lithium ion battery, in particular to a device and a method for online detection and classification of the appearance quality of a pole piece of a lithium ion battery. Background technique [0002] Lithium-ion batteries have the advantages of high specific energy, high voltage, long cycle life, and long storage time. They are not only widely used in portable electronic devices such as mobile phones, MP3, MP4, and laptop computers, but also widely used in electric bicycles and electric vehicles. Therefore, the performance requirements for lithium-ion batteries are also getting higher and higher. [0003] The electrode pole piece is the core component and an important part of the lithium-ion battery, and the quality of the coated electrode pole piece will directly determine the performance of the lithium-ion battery. If the pole piece has appearance defects such as creases, dam...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an online detection and grading device for lithium-ion battery pole pieces to solve the problem that the existing detection device only detects the position of the glue paper and the tab on the lithium battery pole piece, and cannot detect the position of the pole piece due to creases, damage, Lithium-ion battery quality problems caused by appearance defects such as missing print or damage, and provide a detection method using the online detection and grading device

Images