Battery module for compact electric appliance for coping with deformation of the battery

摘要

A battery module adapted to be replaceably mounted on a mobile phone and capable of forming a part of an outer peripheral surface of the mobile phone. Deformation of the battery relative to a direction of contact of the battery module with the compact electric appliance is accommodated in a gap, defined in an inner surface of a container. In a direction away from the mobile phone, deformation of the container resulting from the deformation of the battery is allowed.