Inductive power supply system and intruding metal detection method thereof

  • US 9,413,197 B2
  • Filed: 03/08/2013
  • Issued: 08/09/2016
  • Est. Priority Date: 05/31/2010
  • Status: Active Grant
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First Claim
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1. An inductive power supply system, utilized for processing an inductive power transmission operation and detecting whether an intruding metal exists inside the inductive power supply system, comprising:

  • an input power module for receiving a stable voltage source;

    a storage module for storing a predetermined information;

    a processing module coupled to the input power module and the storage module for generating a control signal according to the predetermined information and a feedback signal;

    a driving module coupled to the input power module and the processing module for transforming the stable voltage source into a driving voltage according to the control signal;

    an inductive coil coupled to the driving module for electrically transmitting the driving voltage to a receipt power device, so as to process the inductive power transmission operation; and

    a feedback module coupled to the inductive coil for generating the feedback signal according to the driving voltage received by the inductive coil;

    wherein the predetermined information represents an initial state of the inductive power supply system comprising a sinusoidal amplitude corresponding to the driving voltage, and the intruding metal can affect another sinusoidal amplitude of the feedback signal to make the processing module correspondingly generate the control signal during the inductive power transmission operation.

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