Patent ID: 9203475
Filing Date: 2015-12-01
Classification: B60L,H02H,H02J,H04B,Y02T

Abstract:
1. A wireless power receiving apparatus comprising: a power receiving coil for receiving a power signal wirelessly transmitted; a rectifier circuit for rectifying the wirelessly received power signal into direct current (DC) output power; a switching unit for controlling input of the power signal to the rectifier circuit at an rear end of the power receiving coil; and a control unit for measuring a voltage of the DC output power rectified by the rectifier, comparing the voltage with a predetermined allowable voltage, and controlling an operation of the switching unit, wherein the control unit lowers a voltage of the power signal being input into the rectifier by controlling a duty ratio about periods of time that the switching unit is turned on and off, when the measured voltage of the DC output power exceeds the allowable voltage.