WIRELESS CHARGER, AND CHARGING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a wireless charger and a charging method therefor, having a high charging efficiency.SOLUTION: A wireless charger includes a coil and a control unit which are mutually electrically connected. The coil transmits a signal transmitted from the control unit to an electronic apparatus having a wireless charging function based on Faraday's law of electromagnetic wave. The control unit includes a comparison module and a selection module. The comparison module compares a battery residual amount of the wireless charger with electric energy necessary for the electronic apparatus having the wireless charging function. The selection module selects an electric energy to be charged to the electronic apparatus having the wireless charging function. The wireless charger charges the electronic apparatus having the wireless charging function by electromagnetic induction via the coil.