Systems, methods, and devices for using a battery as an antenna for receiving wirelessly delivered power from radio frequency power waves

  • US 10,714,984 B2
  • Filed: 11/06/2018
  • Issued: 07/14/2020
  • Est. Priority Date: 10/10/2017
  • Status: Active Grant
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First Claim
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1. A method of constructing a wireless power receiver configured to receive wirelessly delivered power, the method comprising:

  • providing power conversion circuitry;

    providing at least one battery having at least two battery terminals including a battery positive terminal and a battery negative terminal, and at least a part of the battery is configured to act as an antenna that wirelessly receives radio frequency (RF) power signals;

    coupling at least one of the at least two battery terminals to the power conversion circuitry, wherein the power conversion circuitry is configured to convert an alternating current (AC) generated by reception of the RF power signals received at the at least one battery into a direct current (DC) voltage; and

    providing charging circuitry having at least two charging circuit terminals, including a charging circuit positive terminal and a charging circuit negative terminalelectrically coupling to the battery positive terminal via a first inductor;

    electrically coupling to the battery negative terminal via a second inductor; and

    electrically coupling the charging circuitry to the power conversion circuitry, wherein;

    the first inductor and the second inductor are configured to block the alternating current from being received by the charging circuitry, andthe charging circuitry is configured to (i) receive the DC voltage from the power conversion circuitry and (ii) charge the at least one battery using the DC voltage.

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