Systems and methods for determining when to transmit power waves to a wireless power receiver

  • US 10,554,052 B2
  • Filed: 01/30/2018
  • Issued: 02/04/2020
  • Est. Priority Date: 07/14/2014
  • Status: Active Grant
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First Claim
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1. A wireless power transmitter, comprising:

  • an antenna array configured to transmit radio frequency (RF) power waves;

    a communications component configured to;

    establish a communication connection with a respective wireless power receiver of one or more wireless power receivers located within a transmission field of the wireless power transmitter; and

    after establishing the communication connection, receive device data from the respective wireless power receiver, wherein the device data includes data used to determine a location of the respective wireless power receiver; and

    a controller in communication with the antenna array and the communications component, the controller configured to;

    determine whether the respective wireless power receiver is authorized to receive wireless power from the wireless power transmitter;

    in accordance with determining that the respective wireless power receiver is authorized to receive wireless power from the wireless power transmitter, determine a particular time at which RF power waves should be transmitted to the respective wireless power receiver, the particular time based at least in part on a charging schedule for the wireless power transmitter; and

    instruct the antenna array to transmit radio frequency RF power waves at the particular time, the RF power waves being transmitted so that the RF power waves constructively interfere near the location of the wireless power receiver.

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