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Resonance coil, electric power transmission device, electric power receiving device, and electric power transmission system

  • US 9,595,382 B2
  • Filed: 02/23/2012
  • Issued: 03/14/2017
  • Est. Priority Date: 02/25/2011
  • Status: Active Grant
First Claim
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1. A resonance coil comprising:

  • a coil wire that forms a plurality of unit coils, each unit coil producing a magnetic field from current flowing therethrough, directions of each magnetic field produced by each unit coil being parallel to each other, the plurality of unit coils being arranged around a coil center line;

    an outer conductor section that is formed with the coil wire, the outer conductor section extending to surround the coil center line and including a first connecting end and a second connecting end;

    an inner conductor section that is formed with the coil wire and is arranged within a first region that is surrounded by the outer conductor section, the inner conductor section having a first end that is connected to the first connecting end and a second end that is connected to the second connecting end; and

    a plurality of second regions formed in the first region that are each surrounded by a portion of the inner conductor section and a portion of the outer conductor section,wherein when the resonance coil is seen in a direction of the coil center line, the coil wire is formed so as not to be overlapped, and each unit coil is formed with the portion of the outer conductor section and the portion of the inner conductor section that surround one of the plurality of second regions.

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