Tab defect detection method

The invention discloses a tab defect detection method, and belongs to the technical field of battery production. The tab defect detection method comprises the following steps: acquiring a to-be-detected picture corresponding to a pole piece unit in a die cutting material; wherein one pole piece unit corresponds to at least one frame of picture to be detected; for each to-be-detected picture corresponding to the same pole piece unit, extracting a tab region in the to-be-detected picture, and numbering tabs of each tab region according to a preset sequence; based on the standard specifications of the tabs corresponding to different tab numbers and the image information of the tab areas, performing defect detection on the tabs on the pole piece units; and if the defective tabs exist on the pole piece units, forming a defect list according to the tab numbers of the tab areas corresponding to the defective tabs. According to the embodiment of the invention, the precision and accuracy of tab defect detection can be