COIL UNIT, AND POWER TRANSMISSION DEVICE AND POWER RECEPTION DEVICE USING THE COIL UNIT

  • US 20100244579A1
  • Filed: 03/19/2010
  • Published: 09/30/2010
  • Est. Priority Date: 03/26/2009
  • Status: Active Grant
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First Claim
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1. A coil unit comprising:

  • a first coil having an outer diameter of D1; and

    at least one second coil having an outer diameter of D2 (D2<

    D1),the at least one second coil being arranged on a transmission surface side of the first coil, and a part or whole of the at least one second coil being overlapped with the first coil when viewed from the transmission surface side.

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