Battery case clamping device

The utility model discloses a battery case clamping device which comprises a workbench, four sets of rectangular frames are distributed on the top of the workbench in a rectangular array mode, clamping plates are arranged at the front ends of the sides, close to each other, of each set of rectangular frames, and an adjusting device for conveniently adjusting the clamping space of the four clamping plates is arranged in each set of rectangular frames. The adjusting device comprises a stepping motor fixed to the outer surface of the rear end of the rectangular frame, a rotating shaft is fixed to the output end of the stepping motor through a coupler, and according to the battery shell clamping device, through the arranged adjusting device, the stepping motor in the adjusting device drives a lead screw to rotate in the forward direction and the reverse direction; and the two sets of push-pull force transmission assemblies are used for pushing the clamping plates to achieve the movement adjusting effect, battery