Wireless power transmission device for detecting external object and method thereof

Abstract

An electronic device is provided. The electronic device includes a resonator in which a first slot is formed, a first inverter connected to a first point and a second point on the first slot of the resonator and configured to provide power to the first slot for detecting a foreign material, the first point and the second point on the first slot being located opposite to each other with the first slot therebetween, a second inverter connected to a third point and a fourth point of the resonator different from the first point and the second point and configured to transfer power to the resonator, and a controller configured to control the first inverter to apply the first power having the first frequency to the first slot, identify at least one first impedance of the first point and the second point while the first power is applied to the first slot, identify, based on the at least one first impedance, an external object adjacent to the electronic device, and control the second inverter to apply a second power having a second frequency different from the first frequency to the third point and the fourth point so as to wirelessly provide power to an external wireless power reception device for a period at least partially overlapping with a period for which the first power is applied to the resonator.

CPC Classifications