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Thermal barrier for wireless power transfer

  • US 10,097,040 B2
  • Filed: 10/23/2014
  • Issued: 10/09/2018
  • Est. Priority Date: 10/30/2013
  • Status: Active Grant
First Claim
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1. A thermal barrier for a wireless power transfer system, the thermal barrier comprising:

  • a first surface area for coupling to a power receiver to be powered by a first electromagnetic signal;

    a second surface area for coupling to a power transmitter providing a second electromagnetic signal;

    a power repeater comprising a resonance circuit including an inductor and a capacitor, the power repeater being arranged to generate the first electromagnetic signal by concentrating energy of the second electromagnetic signal towards the first surface area;

    a receiver for receiving a temperature measurement; and

    a controller for controlling a first level of the first electromagnetic signal by adapting a property of the resonance circuit, the controller being arranged to reduce the first level to a second level for increasing values of the temperature measurement, wherein the second level is less than the first level and is non-zero.

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