Patent ID: 9577466
Date: 2017-02-21
CPC Classifications: B60L,H02J,Y02T

Claim:
1. A wireless charging system which transfers wireless power to a receiving coil mounted on a vehicle through a magnetic coupling, the wireless charging system comprising: a plurality of transmitting coils placed at predetermined different positions on a power transmitter; a plurality of power supply units supplying voltage and current to the plurality of transmitting coils; a plurality of switches connecting each of the plurality of transmitting coils to each of the plurality of power supply units, respectively; a plurality of transmitting coil controllers connecting each of the plurality of transmitting coils to each of the plurality of switches, respectively, wherein each of the plurality of transmitting coil controllers store a preset coordinate value of one of the plurality of transmitting coils, sense a magnitude of voltage or current of one of the plurality of transmitting coils, and control a turn on/off operation of one of the plurality of switches, respectively; and a controller connecting each of the plurality of transmitting coils to each of the plurality of power supply units, receiving the stored coordinate value and information about the magnitude of voltage or current, and applying charging power only to a subset of the plurality of transmitting coils based on the stored coordinate value and the information about the magnitude of voltage or current.