WIRELESS POWER APPARATUS AND WIRELESS POWER-RECEIVING METHOD
First Claim
Patent Images
1. A wireless power apparatus comprising:
- a power receiver coil which receives power, as magnetic field energy, from a power transmitter coil by magnetic field resonance produced between the power transmitter coil and the power receiver coil;
a power pickup coil which derives power from the power receiver coil by electromagnetic induction;
a detector which detects current flowing through the power pickup coil; and
a controller which controls a coupling strength between the power pickup coil and the power receiver coil based on the current detected by the detector.
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Abstract
A wireless power apparatus includes: a power receiver coil which receives power, as magnetic field energy, from a power transmitter coil by magnetic field resonance produced between the power transmitter coil and the power receiver coil; a power pickup coil which derives power from the power receiver coil by electromagnetic induction; a detector which detects current flowing through the power pickup coil; and a controller which controls a coupling strength between the power pickup coil and the power receiver coil based on the current detected by the detector.
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Citations
12 Claims
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1. A wireless power apparatus comprising:
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a power receiver coil which receives power, as magnetic field energy, from a power transmitter coil by magnetic field resonance produced between the power transmitter coil and the power receiver coil; a power pickup coil which derives power from the power receiver coil by electromagnetic induction; a detector which detects current flowing through the power pickup coil; and a controller which controls a coupling strength between the power pickup coil and the power receiver coil based on the current detected by the detector. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless power-receiving method comprising:
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supplying power, as magnetic field energy, to a power receiver coil from a power transmitter coil by use of magnetic field resonance produced between the power transmitter coil and the power receiver coil; deriving power from the power receiver coil to the power pickup coil by electromagnetic induction; detecting current flowing through the power pickup coil; and controlling a coupling strength between the power pickup coil and the power receiver coil based on amplitude of the current detected by the detector. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification