| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wireless power transmission system which efficiently performs wireless power transmission and data communications between a transmitter and a receiver with the minimum configuration, and a power transmission device and a power reception device of the system. <P>SOLUTION: The power transmission device of the wireless power transmission system includes a first resonator for magnetic field resonance which resonates at a predetermined resonance frequency such that a Q factor of the resonance can be switched between high and low, and first control means which performs power transmission and communications in a time-division manner by setting the Q factor of the first resonator high during power transmission and setting the Q factor of the first resonator low during communications. The power reception device includes a second resonator for magnetic field resonance which resonates at a frequency same as the resonance frequency of the first resonator such that a Q factor of the resonance can be switched between high and low, and second control means which performs power transmission and communications in a time-division manner by setting the Q factor of the second resonator high during power reception and setting the Q factor of the second resonator low during communications. <P>COPYRIGHT: (C)2012,JPO&INPIT |
