BATTERY AND ELECTRIC DEVICE

A battery and an electric device are provided. The battery includes a cell assembly, a case cover, and a constraining structure. The case cover is configured to be fixedly connected to the cell assembly, the case cover has a cavity, the cavity is configured to accommodate at least a portion of the cell assembly, the constraining structure is configured to constrain swelling of the cell assembly, and the constraining structure is disposed on the case cover.