Patent ID: 8981599
Filing Date: 2015-03-17
Classification: H01F,H02J

Abstract:
1. A power feeding device comprising: a high-frequency power source; a transmission coil electrically connected to the high-frequency power source; a first resonant circuit comprising a first resonant coil; a detector; a first control circuit electrically connected to the detector; and a first transmission/reception circuit electrically connected to the first control circuit; and a first moving unit electrically connected to the first control circuit; wherein the power feeding device is configured to perform electromagnetic resonance coupling with a power receiving device comprising: a load; a reception coil electrically connected to the load; a second resonant circuit comprising a second resonant coil; a second transmission/reception circuit; a second control circuit electrically connected to the second transmission/reception circuit; and a second moving unit electrically connected to the second control circuit, wherein the high-frequency power source is configured to output an electric power through the transmission coil to the reception coil, wherein the first resonant coil is configured to perform electromagnetic induction coupling with the transmission coil, wherein the detector is configured to detect a reflection component of the electric power reflected at the transmission coil, wherein the first control circuit is configured to output a signal in accordance with the reflection component of the electric power to the first transmission/reception circuit, wherein the first transmission/reception circuit is configured to transmit the signal, wherein the second resonant coil is configured to perform electromagnetic induction coupling with the reception coil, wherein the second transmission/reception circuit is configured to receive the signal and output the signal to the second control circuit, wherein the second control circuit is configured to output the signal to the second moving unit, wherein the second moving unit is configured to control a distance between the reception coil and the second resonant circuit in accordance with the signal, and wherein the second moving unit is configured to control a position of the second resonant circuit in accordance with the signal.