WIRELESS ENERGY TRANSFER FOR VEHICLES

  • US 20120119575A1
  • Filed: 10/18/2011
  • Published: 05/17/2012
  • Est. Priority Date: 09/27/2008
  • Status: Active Grant
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First Claim
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1. A vehicle powering wireless receiver for use with a first electromagnetic resonator coupled to a power supply, the first electromagnetic resonator having a mode with a resonant frequency ω

  • 1, an intrinsic loss rate Γ

    1, and a first Q-factor Q1

    1/2Γ

    1, the wireless receiver comprising;

    a load configured to power the drive system of a vehicle using electrical power; and

    a second electromagnetic resonator adapted to be housed upon the vehicle and configured to be coupled to the load, the second electromagnetic resonator having a mode with a resonant frequency ω

    2, an intrinsic loss rate Γ

    2, and a second Q-factor Q2

    2/2Γ

    2;

    wherein the second electromagnetic resonator is configured to be wirelessly coupled to the first electromagnetic resonator to provide resonant, non-radiative wireless power to the second electromagnetic resonator from the first electromagnetic resonator; and

    wherein the field of at least one of the first electromagnetic resonator and the second electromagnetic resonator is shaped using a conducting surface to avoid a loss-inducing object.

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