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Power feeding device, power receiving device and wireless power feeding system

  • US 9,153,969 B2
  • Filed: 01/06/2011
  • Issued: 10/06/2015
  • Est. Priority Date: 01/14/2010
  • Status: Expired due to Fees
First Claim
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1. A power feeding device comprising:

  • a power transmitter configured to generate a plurality of transmission signals having different frequencies from each other, the plurality of transmission signals including at least one power signal corresponding to power;

    a power feeding element that is fed with the plurality of transmission signals generated by the power transmitter; and

    a plurality of resonance elements that (i) are separate from each other with each having a unique resonance frequency that is different from that of any other resonance element in the plurality of resonance elements, and that (ii) are coupled with the power feeding element and receive from the power feeding element the plurality of transmission signals by electromagnetic induction,wherein,each resonance element is configured to receive a different transmission signal out of the plurality of transmission signals for transmission at a respective resonance frequency of the resonance element.

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