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US 10,320,235 B2Granted
Power feeding device, power receiving device and wireless power feeding system
AssigneeSony Corporation
InventorOsamu Kozakai
Life of this patent
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Abstract
Disclosed herein is a power feeding device including a power transmitter adapted to generate a plurality of transmission signals at different frequencies including at least power to be fed; a power feeding element that is fed with transmission signals including power generated by the power transmitter; and a plurality of resonance elements that have different resonance frequencies and are provided where they can be coupled with the power feeding element by electromagnetic induction.
Claims11
A power feeding device comprising:
- a power transmitter configured to generate a plurality of transmission signals having different frequencies from each other, the plurality of transmission signals including at least one power signal corresponding to power;
- a power feeding element that is fed with the plurality of transmission signals generated by the power transmitter;
- and
- a plurality of resonance elements that (i) are separate from each other with each having a unique resonance frequency that is different from that of any other resonance element in the plurality of resonance elements, (ii) radiate respective magnetic fields using magnetic field resonance, and (iii) are coupled with the power feeding element and receive from the power feeding element the plurality of transmission signals by electromagnetic induction.
1 more element
A wireless power feeding system comprising:
- a power feeding device, the power feeding device including
- (a) a power transmitter configured to generate the plurality of transmission signals having different frequencies from each other, the plurality of transmission signals including at least one power signal corresponding to power,
- (b) a power feeding element that is fed with the plurality of transmission signals generated by the power transmitter, and
- (c) a plurality of resonance elements that (i) are separate from each other with each having a unique resonance frequency that is different from that of any other resonance element in the plurality of resonance elements, and that (ii) are coupled with the power feeding element and receive from the power feeding element the plurality of transmission signals by electromagnetic induction;
- and
- a power receiving device configured to receive from the power feeding device, via magnetic field resonance, the plurality of transmission signals,
- wherein,
- in the power feeding device, each resonance element is configured to receive a different transmission signal out of the plurality of transmission signals for transmission at a respective resonance frequency of the resonance element, and
- the power receiving device includes at least a second plurality of resonance elements that are separate from each other and configured to receive the plurality of transmission signals from the first plurality of resonance elements via the magnetic field resonance, each resonance element in the second plurality of resonance elements having a unique resonance frequency corresponding to one of the resonance frequencies of the resonance elements in the first plurality of resonance elements.
6 more elements
Dependencies are inferred from the claim text.