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Power transmitting device, power feeding system, and power feeding method

  • US 9,390,850 B2
  • Filed: 07/03/2013
  • Issued: 07/12/2016
  • Est. Priority Date: 07/13/2012
  • Status: Active Grant
First Claim
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1. A power transmitting device comprising:

  • a plurality of adjacent power transmitting portions; and

    a power source portion electrically connected to the plurality of adjacent power transmitting portions,the plurality of adjacent power transmitting portions each comprising;

    a power transmitting coil configured to be supplied with power from the power source portion and including a first switch;

    a power transmitting resonance coil which is electromagnetically coupled with the power transmitting coil by electromagnetic induction; and

    a directional coupler which inputs reflected power reflected from the power transmitting resonance coil to a second switch and a third switch,wherein the second switch is turned on when the inputted reflected power is smaller than reference power,wherein the third switch is turned on when the inputted reflected power is larger than the reference power,wherein the first switch is turned on when the second switch is turned on,wherein the power transmitting device is in a power transmitting state when the first switch is turned on, andwherein the power transmitting device is in a non-power transmitting state when the first switch is turned off.

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