Charging system for electric window covering

A charging system for an electric window covering, wherein the electric window covering comprises:

• a motorized assembly, which controls a movement of a covering material of the electric window covering, and a power supply device, which comprises a rechargeable power unit and a first remaining power detection circuit;
• wherein the rechargeable power unit is coupled to and provides power to the motorized assembly, and the first remaining power detection circuit is coupled to the rechargeable power unit to detect a potential magnitude of the rechargeable power unit;
• the first remaining power detection circuit also generates and outputs a potential signal;
• the charging system comprising:
• a comparison module coupled to the first remaining power detection circuit, wherein the potential signal outputted by the first remaining power detection circuit is inputted into the comparison module;
• when the potential magnitude represented by the potential signal is less than a threshold predetermined in the comparison module, the comparison module generates and outputs a warning notice signal;
• a notification unit comprising a presenting module, wherein the presenting module receives the warning notice signal and represents a warning notice representing the warning notice signal;
• a charging device comprising an extension object with stiffness, an electric power output, and a power storage device;
• and
• a conductor provided in a longitudinal direction of the extension object and comprising a first end and a second end, wherein the first end is coupled to the electric power output and the second end is coupled to the power storage device for providing a power of the power storage device to the electric power output via the conductor;
• wherein, when the presenting module represents the warning notice, the electric power output of the charging device is adapted to be operably coupled to the rechargeable power unit, whereby the electric power output provides the power to the rechargeable power unit to charge the rechargeable power unit;
• wherein the electric power output of the charging device is adapted to be operably disengaged from the rechargeable power unit, and the motorized assembly controls the movement of the covering material of the electric window covering without the charging device coupled to the rechargeable power unit.