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Method for managing contactless power transfer from a transmitter to a receiver, and corresponding transmitter

  • US 9,991,722 B2
  • Filed: 12/08/2015
  • Issued: 06/05/2018
  • Est. Priority Date: 06/18/2015
  • Status: Active Grant
First Claim
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1. A method for managing contactless power transfer from a transmitter to a receiver that are coupled to one another, comprising:

  • generating a magnetic field by the transmitter from a command at a control frequency for a switching resonant circuit,controlling the switching resonant circuit with a control signal that is internal to an oscillating loop that maintains itself at said control frequency and incorporates said switching resonant circuit,generating the control signal as a delayed signal resulting from detection of the changes of slope of a signal that is internal to the switching resonant circuit,communicating information by the receiver involving modulation of said magnetic field,detecting said modulation by the transmitter so as to extract said information by detecting variations in the control frequency; and

    adjusting said control frequency according to said received information.

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