POWER TRANSMITTING APPARATUS, POWER TRANSMISSION SYSTEM, AND POWER TRANSMISSION METHOD
First Claim
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1. A power transmitting apparatus, comprising:
- a power transmission or reception circuit;
a first coil connected to the power transmission or reception circuit through wires;
a plurality of resonance coils having respective, different diameters one of which is selectively coupled to the first coil through electromagnetic induction; and
a position control apparatus configured to control the positions of the resonance coils,wherein the position control apparatus is configured to selectively align an axial direction of one of the resonance coils with an axial direction of the first coil.
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Abstract
A power transmitting apparatus includes a power transmission or reception circuit, a first coil connected to the power transmission or reception circuit through wires, a plurality of resonance coils having respective, different diameters one of which is selectively coupled to the first coil through electromagnetic induction, and a position control apparatus configured to control the positions of the resonance coils, wherein the position control apparatus is configured to selectively align an axial direction of one of the resonance coils with an axial direction of the first coil.
33 Citations
10 Claims
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1. A power transmitting apparatus, comprising:
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a power transmission or reception circuit; a first coil connected to the power transmission or reception circuit through wires; a plurality of resonance coils having respective, different diameters one of which is selectively coupled to the first coil through electromagnetic induction; and a position control apparatus configured to control the positions of the resonance coils, wherein the position control apparatus is configured to selectively align an axial direction of one of the resonance coils with an axial direction of the first coil. - View Dependent Claims (2, 3, 4)
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5. A power transmission system, comprising:
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a power transmitting apparatus; and a power receiving apparatus configured to receive power from the power transmitting apparatus via magnetic resonance, wherein at least one of the power transmitting apparatus and the power receiving apparatus includes; a power transmission or reception circuit; a first coil connected to the power transmission or reception circuit through wires; a plurality of resonance coils having respective, different diameters one of which is selectively coupled to the first coil through electromagnetic induction; and a position control apparatus configured to control the positions of the resonance coils, wherein the position control apparatus is configured to selectively align an axial direction of one of the resonance coils with an axial direction of the first coil. - View Dependent Claims (6, 7, 8, 9)
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10. A power transmission method, comprising:
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selecting one of a plurality of resonance coils having respective, different diameters; aligning an axial direction of the selected one of the resonance coils with an axial direction of a first coil; placing an axial direction of each of one or more resonance coils other than the selected one of the resonance coils in a direction perpendicular to the axial direction of the first coil; supplying alternating-current power to the first coil through wire connections; supplying alternating-current power from the first coil to the selected one of the resonance coils through electromagnetic induction; and transmitting power from the selected one of the resonance coils to a resonance coil on a receiver side through magnetic resonance.
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Specification