无线电力传送装置;WIRELESS POWER TRANSMISSION APPARATUS

摘要

于本发明的无线电力传送装置中，仅于二次线圈侧构成谐振电路，对流入至谐振电路的谐振电流的相位资讯进行检测，并基于上述相位资讯，以使流入至一次线圈的驱动电流的电流相位较电压相位略微延迟的方式规定驱动频率而驱动一次线圈。另外，将由二次线圈的漏电感、谐振电容器的电容、及等效负载电阻所决定的Q值设定为由Q=2/k 2 (k为耦合系数)规定的值以上的值。; phase information of a resonant current flowing to the resonant circuit is detected; and based on the phase information, a driving frequency is determined and a primary coil is driven such that a current phase of a driving current flowing to the primary coil is slightly delayed relative to a voltage phase. In addition, a Q value determined by a leakage inductance of the secondary coil, a capacitance of a resonant capacitor, and an equivalent load resistance is set to a value equal to or larger than a value determined by Q=2/k 2 (k is a coupling coefficient).