Waterproof battery shell and battery module

The utility model provides a battery waterproof shell, which comprises a box body, a cover body, a first waterproof sealing gasket and a plurality of blind hole nuts, blind holes are arranged on the blind hole nuts, internal threads are arranged in the blind holes, and the box body comprises a main body part, an edge part and a plurality of screws matched with the blind hole nuts. The main body part is provided with a cavity which is used for accommodating a battery cell and forms a first opening towards one side, the edge part is provided with a plurality of first through holes, at least part of the blind hole nut is hermetically connected to one side, opposite to the cover body, of the edge part and corresponds to the first through holes, and the first waterproof sealing gasket is arranged on one side, facing the cover body, of the edge part; at least part of the screws sequentially penetrate through the cover body and the first through holes and are connected with the blind hole nuts. The utility model fur