Wireless charging and powering of electronic sensors in a vehicle

  • US 10,124,754 B1
  • Filed: 12/30/2014
  • Issued: 11/13/2018
  • Est. Priority Date: 07/19/2013
  • Status: Active Grant
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First Claim
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1. A system for transmitting and receiving wireless power, the system comprising:

  • a vehicle;

    a plurality of sensors coupled to the vehicle;

    a wireless power transmitter coupled to an exterior of the vehicle, wherein;

    the wireless power transmitter includes a housing that houses an integrated circuit and antenna elements of the wireless power transmitter;

    the vehicle is configured to power the wireless power transmitter, andthe wireless power transmitter is configured to;

    transmit, via at least some of the antenna elements of the wireless power transmitter, a plurality of radio frequency (RF) wireless power transmission waves towards each of the plurality of sensors; and

    control, via the integrated circuit, transmission of the plurality of RF wireless power transmission waves through phase and gain adjustments of each of the plurality of RF wireless power transmission waves relative to at least one other RF wireless power transmission wave of the plurality of RF wireless power transmission waves to cause formation of distinct constructive interference patterns near each of the plurality of sensors, wherein (i) some of the antenna elements are configured to transmit a first set of the plurality of RF wireless power transmission waves at a first frequency to form one of the distinct constructive interference patterns near a first respective sensor of the plurality of sensors, and (ii) some of the antenna elements are configured to transmit a second set of the plurality of RF wireless power transmission waves at a second frequency, different from the first frequency, to form one of the distinct constructive interference patterns near a second respective sensor of the plurality of sensors; and

    a plurality of wireless power receivers, each wireless power receiver being coupled to the exterior of the vehicle and one of the plurality of sensors, wherein each of the plurality of wireless power receivers is configured to;

    receive a respective set of RF wireless power transmission waves from the plurality of RF wireless power transmission waves transmitted by the wireless power transmitter, each RF wireless power transmission wave of the respective set converging with another RF wireless power transmission wave of the respective set to form one of the distinct constructive interference patterns near a respective sensor of the plurality of sensors, andconvert, via a rectifier and power converter of the wireless power receiver, the respective set of RF wireless power transmission waves into usable energy for powering one of the plurality of sensors.

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