Patent ID: 8030887

Claim:
An apparatus for wirelessly receiving power, comprising: a charge core configured to generate an induced current in response to an electromotive force exerted by a wireless power transmission apparatus; a rectifier connected to the charge core to rectify the induced current and configured to generate a power signal; a charge circuit configured to receive the power signal and charge a battery cell with the power signal; a power monitoring module for monitoring a voltage level of the power signal and determine whether the voltage level is between a lower limit and an upper limit of a predetermined reference range; and a device controller configured to generate a voltage adjustment signal for requesting the transmission apparatus to increase a level of the electromotive force when the voltage level is lower than the lower limit of the predetermined reference range and to decrease the level of the electromotive force when the voltage level is higher than the upper limit of the predetermined reference range, wherein the device controller is configured to transmit the voltage adjustment signal to the transmission apparatus.