Patent ID: 9197101
Filing Date: 2015-11-24
Classification: B60L,H02J,Y02T

Abstract:
1. A wireless electric power transmission apparatus comprising: two antennas having the ability to transmit electric power by a non-contact method via resonant magnetic coupling, one of the two antennas being a series resonant circuit, of which the resonant frequency is fs, the other antenna being a parallel resonant circuit, of which the resonant frequency is fp; an oscillator which is connected to one of the two antennas that transmits RF power; and a control section which controls a transmission frequency according to the magnitude of the electric power to be transmitted from one of the two antennas to the other, wherein if a coupling coefficient between the two antennas is k, then fs and fp are set so as to satisfy the inequality fs/fp<−0.6074×k