ELECTRIC ENERGY SWITCHING ASSEMBLY, TOOL WITH ELECTRIC ENERGY SWITCHING ASSEMBLY AND SYSTEM

A power switching device, an electric energy storage system and an electric tool system are provided. The power switching device includes a plug connected to a power supply device and including an output terminal; and a power switching assembly connected to the plug and including a power switching member, the switching member is used for switching a coupling form of the plug. The power switching assembly further includes a control member for controlling the power switching assembly to move between different switching positions. The control member includes a switching button, and the switching position of the power switching assembly is switched by pressing the switching button.