WIRELESS POWER APPARATUS AND WIRELESS POWER-RECEIVING METHOD

  • US 20100244583A1
  • Filed: 03/31/2010
  • Published: 09/30/2010
  • Est. Priority Date: 03/31/2009
  • Status: Active Grant
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First Claim
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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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