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Device for inductively transmitting power

  • US 9,912,167 B2
  • Filed: 09/29/2014
  • Issued: 03/06/2018
  • Est. Priority Date: 03/30/2012
  • Status: Active Grant
First Claim
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1. A system for inductive power transmission, the system comprising:

  • a primary unit having a primary coil;

    a secondary unit having a secondary coil;

    a metal detector,wherein the primary coil generates a magnetic transmission field in a transmission area between the primary unit and the secondary unit,wherein the metal detector is configured to detect metallic objects in the transmission area,wherein the metal detector comprises;

    a transmitter coil; and

    a signal coil,wherein the transmitter coil generates a detector field which is superimposed on the magnetic transmission field and wherein the signal coil acquires a resulting superimposition field and not the detector field if a metallic object is disposed in the transmission area.

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