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Thermal management using a hybrid spiral/helical winding geometry

  • US 5,600,222 A
  • Filed: 12/02/1994
  • Issued: 02/04/1997
  • Est. Priority Date: 10/25/1993
  • Status: Expired due to Fees
First Claim
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1. An inductive charging system for use in charging batteries of an electric vehicle, wherein said inductive charging system comprises a power source, a charge station coupled to the power source, a charge probe that comprises a primary core and a primary winding of a transformer coupled to the charge station by means of an extendable charging cable, a charge port disposed in the electric vehicle that comprises a secondary core and secondary windings of the transformer, and a charge controller coupled between the charge port and the batteries of the electric vehicle, wherein the improvement comprises:

  • a primary winding comprising a predetermined number of turns stacked in a predetermined number of layers and wherein at least one of the turns comprises a spiral multi-turn winding such that the number of layers is less than the number of turns.

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