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Magnetic field shaping for inductive power transfer

  • US 10,263,466 B2
  • Filed: 09/07/2012
  • Issued: 04/16/2019
  • Est. Priority Date: 09/07/2011
  • Status: Active Grant
First Claim
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1. An IPT system magnetic flux device for generating or receiving a magnetic flux for coupling with another device to transfer power inductively, the magnetic flux device comprising:

  • a magnetically permeable core;

    at least two coils provided on a first side of the core and magnetically associated with the core; and

    a flux shaping structure for shaping the magnetic flux for coupling provided on a side of the core opposite to the first side, the flux shaping structure comprising an outer portion that extends beyond at least part of the perimeter of the core, and a lip extending from the outer portion at an angle greater than 90 degrees relative to the outer portion,wherein the at least two coils are substantially on the same plane.

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