Protection device for preventing charging short circuit of battery of electric vehicle

The utility model discloses a protection device for preventing charging short circuit of a battery of an electric automobile, and relates to the technical field of electric automobiles. The device comprises an upper opening box and a shell, an adhesive layer is connected to the lower surface of the upper opening box, oil film paper is connected to the lower surface of the adhesive layer, limiting shafts are connected to the middle of the upper surface of the upper opening box in an annular array mode, and first magnet blocks are connected to the four corners and the middle of the upper surface of the upper opening box; limiting hole grooves are formed in the middle of the lower surface of the shell in an annular array, second magnet blocks are connected to the four corners and the middle of the lower surface of the shell, a protection plate is arranged on the rear side of the upper surface of the upper opening box, and a connecting rod is connected to the middle of the rear side of the lower surface of the pr