Battery and electric device

The utility model relates to a battery and a power utilization device. The battery comprises a plurality of battery monomers and a box body, the plurality of battery monomers are arranged in the box body, the box body comprises a first box wall, the first box wall comprises a supporting area and an edge area arranged around the supporting area, the supporting area is used for supporting the plurality of battery monomers, the edge area is provided with a protection structure, the protection structure comprises a concave part, and the concave part is sunken towards the surfaces of the plurality of battery monomers relative to the supporting area; and/or the protection structure comprises a convex part, the convex part protrudes out of the surface, facing the plurality of battery monomers, of the supporting area, and the convex part at least faces the surfaces of the plurality of battery monomers and is arranged in an insulating manner. According to the battery provided by the invention, the protection structure can prolong or block the creepage distance from the single battery to the edge of the box body, and the problem of insulation failure between the single battery and the box body after thermal runaway is solved.