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Wireless power transfer

  • US 9,444,270 B2
  • Filed: 08/02/2012
  • Issued: 09/13/2016
  • Est. Priority Date: 08/02/2012
  • Status: Active Grant
First Claim
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1. A method performed by a wireless power transfer device, the method comprising:

  • applying a cascading charging mechanism to allocate wirelessly transmitted power to one or more wireless devices, wherein applying the cascading charging mechanism comprises, performing;

    determining that a percentage of battery charge of each of the one or more wireless devices is at or below a threshold;

    identifying a priority order of charging of each of the one or more wireless devices, wherein a first priority order of a first wireless device of the one or more wireless devices is based on a first percentage of battery charge of the first wireless device; and

    repeating, according to the priority order, for each particular wireless device of the one or more wireless devices other than a lowest-priority wireless device;

    determining an amount of remaining power available for wireless transfer; and

    assigning to the particular wireless device a portion of the remaining power,wherein the lowest-priority wireless device is assigned a remaining portion of available power.

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