WIRELESS POWER TRANSFER SYSTEM AND A LOAD APPARATUS IN THE SAME WIRELESS POWER TRANSFER SYSTEM

  • US 20100164295A1
  • Filed: 11/16/2009
  • Published: 07/01/2010
  • Est. Priority Date: 12/26/2008
  • Status: Active Grant
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First Claim
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1. A wireless power transfer system, comprising:

  • a supply-side power supply coil;

    a supply-side magnetic resonance coil;

    a load-side power supply coil; and

    a load-side magnetic resonance coil, whereinsaid supply-side magnetic resonance coil is excited, by supplying transmission electric powers of frequencies equal to magnetic resonance frequencies of said supply-side magnetic resonance coil and said load-side magnetic resonance coil to said supply-side power supply coil, thereby transferring an electric power, wirelessly, with applying a magnetic resonance phenomenon between said supply-side power supply coil and said load-side power supply coil, so as to take out the transmission electric power transferred to said supply-side magnetic resonance coil by said load-side power supply coil, and whereinsaid coils are so disposed that a distance between said supply-side magnetic resonance coil and said load-side power supply coil is shorter than a distance between said supply-side magnetic resonance coil and said load-side magnetic resonance coil.

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