Battery string preparation-based positioning tool cyclic detection, elimination and compensation device and method

The invention discloses a device and a method for circularly detecting, removing and supplementing positioning tools based on battery string preparation. The device comprises a welding platform, a picking device, a stacking device, a conveying device, a placing device and a tool detecting device, the welding platform is used for bearing the battery strings and the positioning tools, the pickup device picks up the welded positioning tools to the conveying device, the conveying device conveys the positioning tools to one end of the placing device, and the placing device carries the qualified positioning tools on the conveying device to the unwelded battery strings; the tool detection device detects whether the positioning tools are qualified or not, and the stacking device stores unqualified positioning tools or provides qualified positioning tools. In the process of continuously welding the battery strings, unqualified positioning tools can be removed before welding, qualified positioning tools are supplied in