WIRELESS POWER SUPPLY SYSTEM AND WIRELESS POWER SUPPLY METHOD

  • US 20100244577A1
  • Filed: 03/11/2010
  • Published: 09/30/2010
  • Est. Priority Date: 03/30/2009
  • Status: Active Grant
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First Claim
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1. A wireless power supply system, comprising:

  • a transmitting coil configured to transmit power in the form of magnetic field energy using magnetic resonance; and

    a power transmitter configured to supply power at a resonant frequency that produces magnetic resonance between the transmitting coil and a receiving coil;

    wherein the power transmitter includesa detector configured to detect current flowing into the transmitting coil, a controller configured to control the frequency of the power supplied to the transmitting coil, anda determining unit configured to determine the coupling strength between the transmitting coil and the receiving coil on the basis of the frequency of the current detected by the detector as well as the frequency of the supplied power.

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