Lithium battery tab coating thickness testing equipment

The utility model relates to the technical field of lithium ion batteries, and discloses lithium battery tab coating thickness testing equipment which comprises a support, a driving mechanism, a pressure sensing device, an ejector pin assembly, a supporting structure and a resistance testing structure. The equipment has good controllability and stability, in the testing process, pressure is applied to the tab through the upper and lower opposite ejector pins, the resistance of the two ejector pins is tested through the resistance testing structure, whether the tab coating is punctured by the ejector pins or not can be determined according to the resistance change when different pressures are applied, the resistance value is stable when the pressure is applied, and the test result is accurate. In the process of increasing the applied pressure, if the resistance value suddenly drops and is stable, the resistance value at the moment is the resistance value of the metal layer, the thickness of the metal layer can