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Electricity supply apparatus and electricity reception apparatus

  • US 10,576,842 B2
  • Filed: 01/26/2018
  • Issued: 03/03/2020
  • Est. Priority Date: 03/14/2012
  • Status: Active Grant
First Claim
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1. An electricity supply apparatus that supplies electricity in a contactless manner to an electricity reception section provided in a vehicle, the apparatus comprising:

  • an electricity supply coil configured to supply electricity to an electricity reception coil of the electricity reception section, said electricity supply coil having a ring shape, an in-edge, an out-edge, and a mid-point, the in-edge being adjacent to a hollow portion of the ring shape in a radial direction of the electricity supply coil, the out-edge being outer than the in-edge in the radial direction, and the mid-point being between the in-edge and the out-edge in the radial direction; and

    a casing which houses the electricity supply coil, said casing having a first surface configured to face the electricity reception section and a second surface on which the electricity supply coil is located,wherein the first surface has an inclined portion with a first region and a second region, the first region overlapping at least a part of an inner portion of the electricity supply coil in a center axis direction of the electricity supply coil, the inner portion being between the in-edge and the mid-point, the second region overlapping at least a part of an outer portion of the electricity supply coil in the center axis direction of the electricity supply coil, the outer portion being between the out-edge and the mid-point, a first distance between the first region of the inclined portion of the first surface and the second surface being larger than a second distance between the second region of the inclined portion of the first surface and the second surface, andwherein the inclined portion of the first surface has one angle with respect to a radial direction of the electricity supply coil over the first region and the second region.

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