METHOD FOR CONTROLLING POWER CHARGE AND WIRELESS POWER CHARGE DEVICE THEREFOR

摘要

PURPOSE: A method for controlling charge power, and a wireless power charge device are provided to sense output power before the output power reaches the boundary frequency of an inband and an outband in frequency tracking, and to obey frequency regulation. CONSTITUTION: A voltage control oscillator(540) outputs resonant frequency according to a first power transmission control value. A wireless power transmission part(500) outputs power by the resonant frequency to a charge object. A first resonator(510) outputs a first power value to the lower limited frequency of the predetermined frequency band. A second resonator(520) outputs the second power value to the upper limited frequency of the predetermined frequency band. A control unit(530) controls a first power transmission control value to control the resonant frequency. [Reference numerals] (500) Wireless power transmission part; (530) Control unit; (540) Voltage control oscillator; (550) Power generation unit; (560) Gate driver; (570) Amplifier; (580) Sensor unit; (590) Wireless communication unit; (AA) Matching L/C