Lithium ion battery lossy lithium precipitation amount testing device

The utility model relates to a lithium ion battery lossy lithium precipitation amount testing device, and belongs to the technical field of lithium batteries. The lithium ion battery lossy lithium precipitation amount testing device comprises a main body cavity cover, an objective table, an air pressure balance switch, a main body cavity and a graduated tube, the bottom of the main body cavity cover is connected with the objective table through a connecting rod, and the main body cavity cover is in threaded connection with the main body cavity; and the side wall of the main body cavity is provided with the air pressure balance switch and the graduated tube. The method has the beneficial effects that the content of precipitated lithium in the whole battery can be specifically quantified through lossy disassembly, and meanwhile, the method has the characteristics of simplicity in operation and convenience in implementation and has popularization value. 本实用新型涉及一种锂离子电池有损析锂量测试装置，属于锂电池技术领域。锂离子电池有损析锂量测试装置，包括主体腔盖、载物台