Contactless battery charger with wireless control link

  • US 6,184,651 B1
  • Filed: 03/20/2000
  • Issued: 02/06/2001
  • Est. Priority Date: 03/20/2000
  • Status: Expired due to Term
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First Claim
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1. A contactless charging system comprising:

  • an inductive coupler comprising a primary side and a secondary side for transferring charging energy from the primary side to the secondary side;

    a first controller electrically coupled to said primary side of said inductive coupler for controlling charging energy provided to said primary side of said inductive coupler;

    a wireless RF receiver electrically coupled to said first controller;

    a first secondary device electrically coupled to the secondary side of said inductive coupler to receive charging energy transferred from the primary side to the secondary side of said inductive coupler;

    a first sensing device coupled to said secondary side of said inductive coupler for producing a first signal indicative of the transferred charging energy received by said first secondary device;

    a wireless RF transmitter electrically coupled to said first sensing device for transferring a first information signal representative of said first signal from the secondary to the primary side of said inductive coupler, and wherein said first controller being responsive to said first information signal at the primary side for controlling charging energy transferred from the primary side to the secondary side;

    a second secondary device electrically coupled to the secondary side of said inductive coupler;

    a communication controller electrically coupled to said second secondary device;

    a wireless RF transmitter electrically coupled to said first controller for transmitting an RF signal including the third information signal for setting a value of at least one operating parameter of said secondary device; and

    a wireless RF receiver electrically coupled to said communication controller for receiving the RF signal and providing the third information signal to the first controller and for wirelessly transferring the third information signal to the second secondary device.

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