| 摘要 |
PURPOSE: A wireless power transceiving system capable of performing multi-charge is provided to retransmit surplus power in a wireless high power receiver to a wireless low power receiver, thereby being easily applied in many wireless power receivers. CONSTITUTION: A wireless power transmitting device(100) generates a first wireless power signal having a first resonant frequency band when supplying commercial power and transmits the first wireless power signal to outside through a magnetic resonance method. A first power receiving device(200) receives the first wireless power signal through the magnetic resonance method, converts the first wireless power signal into use power, converts a surplus wireless power signal which is not converted into the use power into a second wireless power signal and retransmits the surplus wireless power signal to outside through the magnetic resonance method. A second wireless power receiving device(300) receives the second wireless power signal through the magnetic resonance method and converts the second wireless power signal into the use power. [Reference numerals] (120) Power supply unit; (131) Wireless power signal generating unit; (132,233) Wireless power signal transmitting unit; (133,234) Wireless power signal detecting unit; (140,240) Control unit; (221,321) Wireless power signal receiving unit; (222,322) Power converting unit; (223) Power detecting unit; (230,330) Power supply unit; (231) Wireless power signal distribution unit; (232) Wireless power signal converting unit; (AA) AC power
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