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Counter wound inductive power supply

  • US 9,520,226 B2
  • Filed: 04/06/2012
  • Issued: 12/13/2016
  • Est. Priority Date: 04/08/2011
  • Status: Active Grant
First Claim
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1. A contactless power supply comprising:

  • a power transfer surface to receive at least one remote device thereon, wherein the remote device includes an inductive secondary defining a centerline axis generally perpendicular to the power transfer surface;

    a first primary coil array subjacent the power transfer surface and including a plurality of spaced-apart inductive primaries each being wound about an axis generally parallel to the power transfer surface such that the plurality of spaced-apart inductive primaries are co-axial; and

    a power supply electrically connected to each of the plurality of inductive primaries, wherein the power supply is operable to selectively drive a first two of the plurality of inductive primaries to define a first region of cooperative electromagnetic flux between the first two of the plurality of inductive primaries and operable to selectively drive a second two of the plurality of inductive primaries to define a second region of cooperative electromagnetic flux between the second two of the plurality of inductive primaries.

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