Battery and electric device

The utility model discloses a battery and a power utilization device, and belongs to the technical field of batteries. The battery comprises a box body, an accommodating space is formed in the box body, the box body comprises a first edge beam and a second edge beam, the first edge beam and the second edge beam are arranged in a spaced mode in the first direction, and the first direction intersects with the length direction of the first edge beam and the length direction of the second edge beam; the first mounting beam is located on the side, away from the second side beam, of the first side beam, a first groove is formed in the end face, facing the first side beam, of the first mounting beam, the first groove penetrates through at least one end of the first mounting beam in the second direction, and at least part of the groove wall of the first groove is welded to the first side beam; the second direction intersects with the first direction and the length direction of the first edge beam. And through the arrangement of the first groove and the second groove, gas volatilized by a welding surface coating in the welding process can be exhausted in time, and therefore the welding quality of the box body is improved.