WIRELESS POWER SUPPLY APPARATUS
First Claim
1. A wireless power reception apparatus configured to receive an electric power signal, including any one of an electric field, a magnetic field, and an electromagnetic field, frequency-modulated or otherwise phase-modulated according to a given transmission-side code, and transmitted from a power supply apparatus, the wireless power reception apparatus comprising:
- a reception coil configured to receive the electric power signal;
a resonance capacitor that, together with the reception coil, forms a resonance circuit; and
a control unit configured to change the impedance of the resonance circuit based upon a reception-side code that is to correspond to the transmission-side code used in the power supply apparatus such that resonance occurs between the resonance circuit and the electric power signal.
2 Assignments
0 Petitions
Accused Products
Abstract
A wireless power supply apparatus generates an electric signal frequency-modulated or otherwise phase-modulated according to a transmission-side code that is determined beforehand with a wireless power reception apparatus. The electric signal thus generated is transmitted via a transmission coil so as to generate an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field. The wireless power reception apparatus receives the electric power signal using a reception coil. A control unit changes the impedance of a resonance circuit that comprises the reception coil and a resonance capacitor, according to a reception-side code that is to correspond to the transmission-side code.
48 Citations
15 Claims
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1. A wireless power reception apparatus configured to receive an electric power signal, including any one of an electric field, a magnetic field, and an electromagnetic field, frequency-modulated or otherwise phase-modulated according to a given transmission-side code, and transmitted from a power supply apparatus, the wireless power reception apparatus comprising:
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a reception coil configured to receive the electric power signal; a resonance capacitor that, together with the reception coil, forms a resonance circuit; and a control unit configured to change the impedance of the resonance circuit based upon a reception-side code that is to correspond to the transmission-side code used in the power supply apparatus such that resonance occurs between the resonance circuit and the electric power signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless power supply apparatus configured to transmit an electric power signal to a wireless power reception apparatus, the wireless power supply apparatus comprising:
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a modulator configured to generate an electric signal that is frequency-modulated or otherwise phase-modulated according to a transmission-side code that is determined beforehand with the wireless power reception apparatus; and a transmission unit configured to transmit the electric power signal via a transmission coil so as to generate an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field.
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10. A wireless power supply system comprising:
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a wireless power supply apparatus configured to transmit an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field, frequency-modulated or otherwise phase-modulated according to a given transmission-side code; and a wireless power reception apparatus configured to receive the electric power signal, wherein the wireless power supply apparatus comprises; a modulator configured to generate an electric signal that is frequency-modulated or otherwise phase-modulated according to a transmission-side code that is determined beforehand with the wireless power reception apparatus; and a transmission unit configured to transmit the electric power signal via a transmission coil so as to generate an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field, and wherein the wireless power reception apparatus comprises; a reception coil configured to receive the electric power signal; a resonance capacitor that, together with the reception coil, forms a resonance circuit; and a control unit configured to change the impedance of the resonance circuit based upon a reception-side code that is to correspond to the transmission-side code used in the power supply apparatus such that resonance occurs between the resonance circuit and the electric power signal. - View Dependent Claims (11, 12, 13)
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14. A power supply method comprising:
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at a power supply apparatus, generating an electric signal frequency-modulated or otherwise phase-modulated according to a transmission-side code that is determined beforehand with a power reception apparatus; at the power supply apparatus, transmitting the electric signal via a transmission coil, and generating an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field; at the power reception apparatus, receiving the electric power signal via a reception coil; and at the power reception apparatus, changing the impedance of a resonance circuit that comprises the reception coil and a resonance capacitor according to a reception-side code that is to correspond to the transmission-side code, such that resonance occurs between the resonance circuit and the electric power signal. - View Dependent Claims (15)
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Specification