US Patent 10158243 Wireless charger having automatic alignment function and method thereof

A wireless charger having an automatic alignment function includes: a charge sensor sensing charging of a portable device disposed on a wireless charging pad within a vehicle; a position regulator regulating positions of the portable device and the charge sensor; and a position sensor sensing the position of the portable device. A controller is configured to move the portable device to a plurality of reference positions on the wireless charging pad sequentially, to detect a charging position on the wireless charging pad based on an induced voltage that is measured in each of the plurality of reference positions and to move the portable device to the charging position.