Multi-tab cell coverage detection method and device

• Main Authors: YANG SHAN, CHEN JIE, FENG HAOYUE, ZHAO YUNLONG, GAN TING
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention belongs to the technical field of battery detection, and particularly relates to a multi-tab battery cell coverage detection method, which comprises the following steps: selecting a pole piece of which the surface of a pole piece body is sequentially coated with a coating paste and an insulating layer, coating the front and back sides of the pole piece with the coating paste and the insulating layer, detecting the widths of the insulating layers on the front and back sides of the pole piece, and combining coverage test data to detect the coverage of the multi-tab battery cell. And judging and confirming whether the winding coverage in the battery cell is qualified or not through the judgment logic. According to the invention, the condition of incomplete coverage caused by dislocation of the paste of the pole piece can be effectively monitored, and the battery is prevented from generating a relatively large safety risk. In addition, the invention also provides a multi-tab cell coverage detection