Battery shell, battery and electric equipment

The utility model discloses a battery shell, a battery and electric equipment. The battery case includes a cover plate, a tray beam, a first seal, a fastener, and a second seal. The tray beam is provided with a locking hole, and the cover plate covers the tray beam. The first sealing piece surrounds the locking hole and is clamped between the tray beam and the first surface of the cover plate. Part of the fasteners penetrate through the cover plate and are connected into the locking holes so that the cover plate can be fixedly connected to the tray beam. The second sealing piece is arranged around the locking hole and clamped between the fastening piece and the second surface, opposite to the first surface, of the cover plate. According to the utility model, the two sealing elements are respectively sealed with the two opposite surfaces of the cover plate, so that double sealing from outside to inside is realized, and the sealing effect is greatly improved. And when one sealing element is damaged and fails, t