NON-CONTACT POWER SUPPLYING DEVICE AND NON-CONTACT POWER SUPPLYING METHOD
First Claim
1. A non-contact power supplying device comprising:
- a power-receiving resonating section set to have a predetermined resonant frequency;
a power-feeding resonating section set to have a resonance frequency equal to the predetermined resonant frequency;
an oscillating section configured to input an alternating-current power into the power-feeding resonating section;
an impedance detecting section configured to detect impedance within a predetermined frequency range as viewed from a power-feeding side; and
a frequency-variable section configured to set a frequency of the alternating-current power,wherein the oscillating section is configured to supply electric power to the power-receiving resonating section by producing a resonance between the power-receiving resonating section and the power-feeding resonating section,wherein the impedance detecting section is configured to set the predetermined frequency range on the basis of a coupling state between the power-receiving resonating section and the power-feeding resonating section,wherein the frequency-variable section is configured to set the frequency of the alternating-current power in accordance with a value of the impedance detected by the impedance detecting section within the predetermined frequency range.
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Accused Products
Abstract
A non-contact power supplying device includes a power-receiving resonating means set to have a predetermined resonant frequency; a power-feeding resonating means set to have a resonance frequency equal to the predetermined resonant frequency; an oscillating means configured to input an alternating-current power into the power-feeding resonating means; an impedance detecting means configured to detect impedance within a predetermined frequency range as viewed from a power-feeding side; and a frequency-variable means configured to set a frequency of the alternating-current power. The oscillating means is configured to supply electric power to the power-receiving resonating means by producing a resonance between the power-receiving resonating means and the power-feeding resonating means. The frequency-variable means is configured to set the frequency of the alternating-current power in accordance with a value of the impedance detected by the impedance detecting means within the predetermined frequency range.
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Citations
8 Claims
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1. A non-contact power supplying device comprising:
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a power-receiving resonating section set to have a predetermined resonant frequency; a power-feeding resonating section set to have a resonance frequency equal to the predetermined resonant frequency; an oscillating section configured to input an alternating-current power into the power-feeding resonating section; an impedance detecting section configured to detect impedance within a predetermined frequency range as viewed from a power-feeding side; and a frequency-variable section configured to set a frequency of the alternating-current power, wherein the oscillating section is configured to supply electric power to the power-receiving resonating section by producing a resonance between the power-receiving resonating section and the power-feeding resonating section, wherein the impedance detecting section is configured to set the predetermined frequency range on the basis of a coupling state between the power-receiving resonating section and the power-feeding resonating section, wherein the frequency-variable section is configured to set the frequency of the alternating-current power in accordance with a value of the impedance detected by the impedance detecting section within the predetermined frequency range. - View Dependent Claims (4, 5, 6, 7)
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2. A non-contact power supplying device comprising:
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a power-feeding resonating section set to have a resonance frequency equal to a resonant frequency of a power-receiving resonating section; an oscillating section configured to input an alternating-current power into the power-feeding resonating section; an impedance detecting section configured to detect impedance within a predetermined frequency range as viewed from a power-feeding side; and a frequency-variable section configured to set a frequency of the alternating-current power, wherein the oscillating section is configured to supply electric power to the power-receiving resonating section by producing a resonance between the power-receiving resonating section and the power-feeding resonating section, wherein the impedance detecting section is configured to set the predetermined frequency range on the basis of a coupling state between the power-receiving resonating section and the power-feeding resonating section, wherein the frequency-variable section is configured to set the frequency of the alternating-current power in accordance with a value of the impedance detected by the impedance detecting section within the predetermined frequency range.
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3. A non-contact power supplying device comprising:
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a power-receiving resonating section set to have a resonance frequency equal to a resonant frequency of a power-feeding resonating section; an impedance detecting section configured to detect impedance within a predetermined frequency range as viewed from a power-feeding side; and a frequency-variable section configured to set a frequency of alternating-current power which is inputted into the power-feeding resonating section by an oscillating section, wherein the power-receiving resonating section is configured to receive electric power from the oscillating section by a resonance between the power-receiving resonating section and the power-feeding resonating section, wherein the impedance detecting section is configured to set the predetermined frequency range on the basis of a coupling state between the power-receiving resonating section and the power-feeding resonating section, wherein the frequency-variable section is configured to set the frequency of the alternating-current power in accordance with a value of the impedance detected by the impedance detecting section within the predetermined frequency range.
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8. A non-contact power supplying method comprising:
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a step of oscillating an alternating-current power; a step of feeding an electric power by generating a magnetic field based on the alternating-current power; a step of receiving the electric power by use of electromagnetic resonance in the magnetic field; a step of setting a predetermined frequency range on the basis of a coupling state between a power-receiving side and a power-feeding side; a step of detecting an impedance within the predetermined frequency range as viewed from the power-feeding side; and a step of setting a frequency of the alternating-current power in accordance with a value of the detected impedance.
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Specification