| 摘要 |
The present invention provides a method for controlling efficient power transmission of a wireless power transmitter. The method includes the steps of: notifying, by a power receiver, a minimum voltage, a maximum voltage, and a reference voltage that is a reference for determining a range for high charging efficiency, and a requirement voltage required by the power receiver of a power transmitter; and supplying, by the power transmitter, transmitting power after determining an optimal efficient voltage range with a high charging efficiency based on the reference voltage, thereby adjusting the transmitting power based on a power reception status of the power receiver. Therefore, the method enables efficient power control for securing optimal charging efficiency of the power receiver, since the power transmitter controls adaptively the transmitting power according to the power reception status of the power receiver. [Reference numerals] (10) Power supply unit; (100) Power transmitter; (110) Power receiver; (12) Amplification unit; (14) Resonance signal generating unit; (16) Voltage/current measuring unit; (18,25) Control unit; (19,26) Wireless communication unit; (20) Resonator; (21) Matching circuit; (22) Rectifier; (23) DC/DC converter; (24) Charging unit/PMIC; (27) Temperature measuring unit; (AA) Communication; (BB) Temperature |
