ELECTRIC POWER FEED APPARATUS, ELECTRIC POWER FEED SYSTEM, AND ELECTRONIC APPARATUS
First Claim
1. An electric power feed apparatus comprising an electric power transmission section including an electric power transmission coil for performing electric power transmission through a magnetic field and an auxiliary resonance section including one or a plurality of resonators,wherein a main resonant frequency in a main resonance operation with use of the electric power transmission coil during the electric power transmission and an auxiliary resonant frequency in the resonator are different from each other.
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Accused Products
Abstract
There are provided an electric power feed apparatus, an electric power feed system, and an electronic apparatus which are capable of performing transmission efficiency control corresponding to positions of apparatuses when electric power transmission is performed between the apparatuses through a magnetic field. The electric power feed apparatus includes an electric power transmission section including an electric power transmission coil for performing electric power transmission through a magnetic field and an auxiliary resonance section including one or a plurality of resonators. A main resonant frequency in a main resonance operation with use of the electric power transmission coil during the electric power transmission and an auxiliary resonant frequency in the resonator are different from each other. A relationship (corresponding characteristics) between a relative position between the electric power feed apparatus (an electric power transmission side) and the electronic apparatus (an electric power reception side) and transmission efficiency during electric power transmission is varied by adjustment of such a difference between the resonant frequencies.
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Citations
20 Claims
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1. An electric power feed apparatus comprising an electric power transmission section including an electric power transmission coil for performing electric power transmission through a magnetic field and an auxiliary resonance section including one or a plurality of resonators,
wherein a main resonant frequency in a main resonance operation with use of the electric power transmission coil during the electric power transmission and an auxiliary resonant frequency in the resonator are different from each other.
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17. An electric power feed system comprising:
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one or a plurality of electronic apparatuses; and an electric power feed apparatus performing electric power transmission to the electronic apparatuses, wherein the electric power feed apparatus includes an electric power transmission section including an electric power transmission coil for performing electric power transmission through a magnetic field, the electronic apparatuses each include an electric power reception section including an electric power reception coil for receiving electric power transmitted from the electric power transmission section, and an auxiliary resonance section is included in one or more of the electric power feed apparatus, the electronic apparatus, and another apparatus as a separate body from the electric power feed apparatus and the electronic apparatus, the auxiliary resonance section including one or a plurality of resonators that each have an auxiliary resonant frequency different from a main resonant frequency in a main resonance operation with use of the electric power transmission coil or the electric power reception coil during the electric power transmission. - View Dependent Claims (18)
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19. An electronic apparatus comprising an electric power reception section including an electric power reception coil for receiving electric power transmitted through a magnetic field and an auxiliary resonance section including one or a plurality of resonators,
wherein a main resonant frequency in a main resonance operation with use of the electric power reception coil during the electric power transmission and an auxiliary resonant frequency in the resonator are different from each other.
Specification