Battery box and battery unit using same

The utility model relates to a battery box, and particularly provides a battery box and a battery unit using the battery box. The battery box comprises a box body, the box body is of an annular closed structure with front and rear openings, the battery box further comprises a front sealing cover and a rear sealing cover, the front sealing cover, the rear sealing cover and the box body define a cavity used for containing a battery module, the front sealing cover and the rear sealing cover are each provided with a screw penetrating hole extending front and back, and the side wall of the box body is provided with a connecting hole or a connecting groove penetrating through the box body front and back. The connecting holes or the connecting grooves are used for being correspondingly communicated with the screw penetrating holes so that screws can penetrate. The upper box body part and the lower box body part are completely the same in structure, and the upper box body part and the lower box body part can be inter