APPARATUS AND METHOD FOR CONTROLLING A CHARGING CURRENT OF A WIRELESS POWER RECEIVER, CAPABLE OF CONTROLLING A SUPPLIED POWER IN CASE A TOTAL POWER WHICH IS SUPPLIED TO THE WIRELESS POWER RECEIVER EXCEEDS A SUPPLIABLE MAXIMUM SUPPLY POWER

摘要

PURPOSE: An apparatus and a method for controlling a charging current of a wireless power receiver are provided to wirelessly charge without a required power of each wireless power receiver.;CONSTITUTION: A wireless power transmitter includes a power source(100), a signal modulator(140), and a transmission controller(160). The power source outputs a power signal. The signal modulator modulates the power signal and generates a data signal. The transmission controller calculates a total sum of a charging request power about each wireless power receiver if a packet data signal is received for a wireless charging from one or more wireless power receivers. The transmission controller generates a charging power control signal and transmits to each wireless power receiver if the calculated total sum exceeds a maximum supply power which is capable of providing in a transmitter.;COPYRIGHT KIPO 2013;[Reference numerals] (100) DC power source; (110) Inverter; (120) Resonant frequency matching unit; (130) Transmission resonance unit; (140) Signal modulator; (150) Signal demodulator; (160) Transmission controller