A battery box configured to accommodate a battery pack and including a housing, at least one pushing assembly and a cylinder. The housing is configured to accommodate the battery pack. The at least one pushing assembly includes a pushing plate and a pushed plate. The pushing plate is configured to be stacked on a side of the battery pack. The pushed plate is configured to be stacked on a side of the pushing plate that is located farthest away from the battery pack. The pushed plate includes a frame part and a plurality of rib parts. The plurality of rib parts are connected to the frame part and are surrounded by the frame part. The cylinder is disposed in the housing and configured to push the pushed plate.