Short-circuit protection device for automobile power battery

The utility model discloses an automobile power battery short-circuit protection device, and relates to the field of power battery short-circuit protection. The automobile power battery short circuit protection device comprises a box body and a rotating shaft, two first rotating wheels are arranged on the front face of the box body, limiting assemblies are arranged between the two first rotating wheels and the box body, the rotating shaft penetrates through the box body, extends inwards and is fixedly connected with a rotating block, a pulley is rotationally connected to the inner wall of the rotating block, and a sliding assembly is arranged between the pulley and the box body. By rotating a rotating wheel, two supporting rods drive two bearing seats to move for fixing a circuit, a fuse is completely placed in arc-shaped grooves in the upper surfaces of two fixing blocks, the fuse can be fixed through a limiting assembly, at the moment, the fuse can be rapidly installed, meanwhile, manual contact with the fu