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Inductive charging device and control method

  • US 9,425,639 B2
  • Filed: 06/27/2012
  • Issued: 08/23/2016
  • Est. Priority Date: 07/08/2011
  • Status: Active Grant
First Claim
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1. A charging device for a rechargeable energy store which has a first induction coil, comprising:

  • a contact surface for positioning the energy store;

    a second induction coil for generating a magnetic field in the area of the contact surface to transmit electrical energy between the first and second induction coils; and

    a direction control system for bringing the magnetic field of the second induction coil in alignment with the first induction coil,wherein the direction control system includes multiple differently aligned subcoils which are configured to generate magnetic subfields, and wherein the magnetic subfields are superimposed to form the magnetic field of the second induction coil in the area of the contact surface.

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