Connection system and connection method for an electric automotive vehicle

  • US 5,821,731 A
  • Filed: 01/30/1997
  • Issued: 10/13/1998
  • Est. Priority Date: 01/30/1996
  • Status: Expired due to Fees
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First Claim
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1. A connection system for charging a battery (21) of an electric automotive vehicle (E) used to drive the vehicle (E), comprising:

  • a primary coil (10) disposed externally of the vehicle (E) and being connectable with an external power source (11);

    a secondary coil (20) disposed on the vehicle (11) and being connectable with the battery (21), said secondary coil (20) being operative for generating an alternating magnetic field by being excited in a specified cycle;

    a plurality of magnetic sensors (50) concentrically disposed around said primary coil (10), said magnetic sensors (50) being equally spaced from one another, and each being operative for detecting intensity of the alternating magnetic field generated by the secondary coil (20); and

    coil moving means (30;


         70) for moving the primary coil (10) and the magnetic sensors (50) in unison until each of the magnetic sensors (50) detects a substantially identical intensity of magnetic field indicative of substantial registration of said primary and secondary coils, wherein the primary coil (10) is electromagnetically coupleable with the secondary coil (20) for inducing a current in the secondary coil (20).

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