Auxiliary tool for measuring width of thinned area of lithium battery pole piece

The utility model relates to an auxiliary tool for measuring the width of a thinned area of a lithium battery pole piece. Belongs to the technical field of lithium ion battery manufacturing. The device mainly solves the problems of large measurement error and long time consumption caused by the fact that two measurement tools are needed to be used by workers in sequence when the width of a thinned area of a coated pole piece is detected in the current production. The tool is mainly characterized by comprising a tool base, a horizontal sliding mechanism, a pole piece clamping device, a micrometer clamping device, scale marks and a pointer, the horizontal sliding mechanism is fixedly installed on the tool base. The pole piece clamping device is composed of a left clamping mechanism and a right clamping mechanism which are symmetrically arranged and fixedly installed at the two ends of the tool base. The scale mark is arranged on the tool base in the sliding direction of the horizontal sliding mechanism. And the