BATTERY AND ELECTRIC DEVICE

A battery (100) and an electric device are provided. The battery (100) includes a cell assembly (10), a case cover (20), and a constraining structure (30). The case cover (20) is configured to be fixedly connected to the cell assembly (10), the case cover (20) has a cavity (23), the cavity (23) is configured to accommodate at least a portion of the cell assembly (10), the constraining structure (30) is configured to constrain swelling of the cell assembly (10), and the constraining structure (30) is disposed on the case cover (20).