Patent ID: 9225391
Filing Date: 2015-12-29
Classification: H02J,H04B

Abstract:
1. A wireless power transmitting apparatus wirelessly transmitting power to a wireless power receiving apparatus, the wireless power transmitting apparatus comprising: a detector detecting a wireless power transmission state between the wireless power transmitting apparatus and the wireless power receiving apparatus; a transmit power controller generating a control signal to control transmit power based on the detected wireless power transmission state; an AC power generator generating an AC power using first DC power based on the control signal; and a transmission induction coil unit transmitting the AC power to a transmission resonance coil through an electromagnetic induction scheme; wherein the AC power generator comprises: a DC-DC converter converting the first DC power into second DC power based on the control signal; and a DC-AC converter converting the second DC power into the AC power; wherein the detector detects the wireless power transmission state based on a level of an output current of the DC-DC converter.