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Wireless power receiver with multiple receiver coils

  • US 10,523,276 B2
  • Filed: 04/18/2012
  • Issued: 12/31/2019
  • Est. Priority Date: 08/16/2011
  • Status: Active Grant
First Claim
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1. A wireless power receiver configured to receive wireless power from a wireless power transmit coil, the wireless power receiver comprising:

  • a first receive coil having a first mutual coupling with the transmit coil and positioned at a first distance from the transmit coil;

    a second receive coil having a second mutual coupling with the transmit coil and positioned at a second distance from the transmit coil, the first distance different than the second distance, the second receive coil designed for substantially the same frequency of operation as the first receive coil; and

    a load configured to selectively couple to the first receive coil when the second distance is greater than the first distance and selectively couple to the second receive coil when the first distance is greater than the second distance, such that the load is able to receive the wireless power via the first receive coil or the second receive coil,wherein an orientation of the first receive coil is variable with respect to an orientation of the second receive coil and an orientation of the transmit coil.

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