Thermal diffusion test cell body for single power battery

The utility model provides a thermal diffusion test cell body for a single power battery. Comprising a lower cell body, an upper cover for covering the lower cell body, a water inlet, a water outlet, a wire inlet and a wire outlet on the lower cell body, water cooling plates in the lower cell body, an anti-explosion valve positioning clamp, a balancing weight and to-be-tested single batteries which are positioned between the adjacent water cooling plates and are provided with thermal insulation materials, heating sheets and temperature sensors, the device provides a closed space for the safety test of the single battery, and highly simulates the working environment of the whole pack. The thermal runaway phenomenon characterization of the single battery to be tested and the thermal diffusion blocking performance of a thermal insulation material are verified, support is provided for safe design and development of a battery assembly, the number of times of testing at the assembly level is reduced, and the testin