Method for driving power supply system
First Claim
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1. A method for driving a power supply system comprising:
- detecting a first value of electric power received by a power receiving device in a state where a power source in a power transmitting device outputs a high-frequency voltage with a first frequency, the first value of electric power being received by a magnetic resonance method;
detecting a second value of electric power received by the power receiving device in a state where the power source outputs the high-frequency voltage with a second frequency higher than the first frequency, the second value of electric power being received by the magnetic resonance method; and
setting a frequency of the high-frequency voltage to be output by the power source to the first frequency when the first value of electric power is larger than or equal to the second value of electric power, and to the second frequency when the first value of electric power is smaller than the second value of electric power,wherein detecting the second value of electric power is performed after detecting the first value of electric power is performed,wherein detecting the first value of electric power, detecting the second value of electric power, and setting the frequency of the high-frequency voltage to be output by the power source are repeatedly performed with the frequency of the high-frequency voltage to be output by the power source being the first frequency, until the first value of electric power becomes larger than or equal to the second value of electric power, so that the first frequency and the second frequency are increased in a step-by-step manner, andwherein the first frequency at the time when the first value of electric power is larger than or equal to the second value of electric power is held for a certain period as an optimal frequency.
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Abstract
The frequency of high-frequency voltage which is output by a variable high frequency power source included in a power transmitting device is controlled in accordance with the value of electric power received by a power receiving device. That is to say, the frequency of the high-frequency voltage is controlled in accordance with data directly relating to power supply. Thus, electric power is accurately supplied with high transmission efficiency in the power supply system.
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Citations
24 Claims
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1. A method for driving a power supply system comprising:
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detecting a first value of electric power received by a power receiving device in a state where a power source in a power transmitting device outputs a high-frequency voltage with a first frequency, the first value of electric power being received by a magnetic resonance method; detecting a second value of electric power received by the power receiving device in a state where the power source outputs the high-frequency voltage with a second frequency higher than the first frequency, the second value of electric power being received by the magnetic resonance method; and setting a frequency of the high-frequency voltage to be output by the power source to the first frequency when the first value of electric power is larger than or equal to the second value of electric power, and to the second frequency when the first value of electric power is smaller than the second value of electric power, wherein detecting the second value of electric power is performed after detecting the first value of electric power is performed, wherein detecting the first value of electric power, detecting the second value of electric power, and setting the frequency of the high-frequency voltage to be output by the power source are repeatedly performed with the frequency of the high-frequency voltage to be output by the power source being the first frequency, until the first value of electric power becomes larger than or equal to the second value of electric power, so that the first frequency and the second frequency are increased in a step-by-step manner, and wherein the first frequency at the time when the first value of electric power is larger than or equal to the second value of electric power is held for a certain period as an optimal frequency. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for driving a power supply system comprising:
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detecting a first value of electric power received by a power receiving device in a state where a power source in a power transmitting device outputs a high-frequency voltage with a first frequency, the first value of electric power being received by a magnetic resonance method; detecting a second value of electric power received by the power receiving device in a state where the power source outputs the high-frequency voltage with a second frequency higher than the first frequency, the second value of electric power being received by the magnetic resonance method; and setting a frequency of the high-frequency voltage to be output by the power source to the first frequency when the first value of electric power is larger than or equal to the second value of electric power, and to the second frequency when the first value of electric power is smaller than the second value of electric power, wherein detecting the first value of electric power is performed after detecting the second value of electric power is performed, wherein detecting the first value of electric power, detecting the second value of electric power, and setting the frequency of the high-frequency voltage to be output by the power source are repeatedly performed with the frequency of the high-frequency voltage to be output by the power source being the second frequency, until the first value of electric power becomes smaller than the second value of electric power, so that the first frequency and the second frequency are decreased in a step-by-step manner, and wherein the second frequency at the time when the first value of electric power is smaller than the second value of electric power is held for a certain period as an optimal frequency. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for driving a power supply system comprising:
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detecting a first value of electric power received by a power receiving device in a state where a power source in a power transmitting device outputs a high-frequency voltage with a first frequency, the first value of electric power being received by a magnetic resonance method; detecting a second value of electric power received by the power receiving device in a state where the power source outputs the high-frequency voltage with a second frequency higher than the first frequency, the second value of electric power being received by the magnetic resonance method; and setting a frequency of the high-frequency voltage to be output by the power source to the first frequency when the first value of electric power is larger than the second value of electric power, and to the second frequency when the first value of electric power is smaller than or equal to the second value of electric power, wherein detecting the second value of electric power is performed after detecting the first value of electric power is performed, wherein detecting the first value of electric power, detecting the second value of electric power, and setting the frequency of the high-frequency voltage to be output by the power source are repeatedly performed with the frequency of the high-frequency voltage to be output by the power source being the first frequency, until the first value of electric power becomes larger than the second value of electric power, so that the first frequency and the second frequency are increased in a step-by-step manner, and wherein the first frequency at the time when the first value of electric power is larger than the second value of electric power is held for a certain period as an optimal frequency. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for driving a power supply system comprising:
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detecting a first value of electric power received by a power receiving device in a state where a power source in a power transmitting device outputs a high-frequency voltage with a first frequency, the first value of electric power being received by a magnetic resonance method; detecting a second value of electric power received by the power receiving device in a state where the power source outputs the high-frequency voltage with a second frequency higher than the first frequency, the second value of electric power being received by the magnetic resonance method; and setting a frequency of the high-frequency voltage to be output by the power source to the first frequency when the first value of electric power is larger than the second value of electric power, and to the second frequency when the first value of electric power is smaller than or equal to the second value of electric power, wherein detecting the first value of electric power is performed after detecting the second value of electric power is performed, wherein detecting first value of electric power, detecting the second value of electric power, and setting the frequency of the high-frequency voltage to be output by the power source are repeatedly performed with the frequency of the high-frequency voltage to be output by the power source being the second frequency, until the first value of electric power becomes smaller than or equal to the second value of electric power, so that the first frequency and the second frequency are decreased in a step-by-step manner, and wherein the second frequency at the time when the first value of electric power is smaller than or equal to the second value of electric power is held for a certain period as an optimal frequency. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification