The utility model relates to the field of detection equipment, in particular to an integrity detection device for a
lithium battery combined cap, which comprises a support plate. A Z-shaped detection base is arranged at the upper end of the supporting plate, a telescopic air cylinder is arranged on the side, close to the supporting plate, of the detection base, a sliding block in sliding fit with the sliding groove is installed, a detection groove is formed in the upper end of the sliding block, a
light hole is formed in the middle of the detection groove, and a
light source corresponding to the
light hole is arranged at the lower end of the side, away from the supporting plate, of the detection base. The beneficial effects of the utility model are that the detection seat is provided with the detection groove, the lower end of the detection groove is provided with the
light source, the upper end of the detection groove is provided with the detection camera, the lower end of the detection camera is provided with the shading cylinder, the
lithium battery combination cap shields the
light hole in the detection groove, and the
light source irradiates upwards; and the detection camera can detect whether holes exist in the
lithium battery combined cap or not, so that the integrity of the
lithium battery combined cap is detected.