Back to results
US 10,122,213 B2Granted
Wireless power supplying system
AssigneeSony Corporation
InventorTakaaki Hashiguchi
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a wireless power supplying system, including a power transmission device adapted to transmit power supplied thereto, a repeater device adapted to repeat the transmission power of the power transmission device, and a power reception device adapted to receive the power repeated by said repeater device.
Claims14
A power transmission device comprising:
- a first resonance element;
- a power generation section configured to generate power supplied to the first resonance element;
- a variable matching section coupled between the power generation section and the first resonance element and having an impedance matching function configured to match the impedance at a power supplying point of the first resonance element in accordance with a control signal;
- a directional coupler coupled between the power generation section and the variable matching section and having a detection section configured to detect a state of power transmission by detecting passing power and reflected power and generating a signal indicating a power transmission efficiency based on a comparison of the reflected power and the passing power;
- and
- a first control section coupled to the directional coupler and configured to receive the signal generated by the detection section and coupled to the variable matching circuit and configured output the control signal to the variable matching section so as to raise a power transmission efficiency by impedance matching by the variable matching section based on the received result of the detection.
3 more elements
A power reception device comprising:
- a first resonance element for receiving power wirelessly transmitted thereto;
- a load;
- a variable matching section having an impedance matching function configured to match the impedance at a connection portion of the first resonance element to a load in response to a control signal;
- a directional coupler coupled between the variable matching circuit and the load and having a detection section configured to detect a state of the transmitted power by detecting passing power and reflected power and generating a signal indicating a power reception efficiency based on a comparison of the passing power and the reflected power, the variable matching section coupled between the first resonance element and the directional coupler;
- and
- a first control section coupled to the directional coupler and configured to receive the signal generated by the detection section and coupled to the variable matching circuit and coupled to output the control signal to the variable matching section so as to raise the power reception efficiency by impedance matching by the variable matching section based on the received result of the detection.
3 more elements
Dependencies are inferred from the claim text.