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Methods for detecting mated coils

  • US 10,594,159 B2
  • Filed: 12/29/2016
  • Issued: 03/17/2020
  • Est. Priority Date: 06/03/2014
  • Status: Active Grant
First Claim
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1. A transmitter of a power transfer system the transmitter comprising:

  • a sensor configured to detect absence of a receiver, the sensor comprising a strain sensor mechanically coupled to an alignment magnet configured to attract the receiver;

    a transmit coil;

    a power supply coupled to the transmit coil and operable in;

    a sustained power transmit mode associated with a first output of the sensor that corresponds to a detected alignment between the transmit coil and a receive coil associated with the receiver; and

    an intermittent power transmit mode associated with a second output of the sensor that corresponds to absence of the receiver;

    whereinthe first output is different from the second output.

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