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1. (WO2018183083) SYSTEM AND METHOD FOR INDUCTIVE CHARGING WITH IMPROVED EFFICIENCY

Pub. No.:    WO/2018/183083    International Application No.:    PCT/US2018/023782
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Fri Mar 23 00:59:59 CET 2018
IPC: B60L 11/18
Applicants: GENERAL ELECTRIC COMPANY
Inventors: FONTANA, Edward, Clark
CATALANO, Robert, James
HARVEY, James, Edward
Title: SYSTEM AND METHOD FOR INDUCTIVE CHARGING WITH IMPROVED EFFICIENCY
Abstract:
A charging system for charging an electric vehicle comprises an inductor-inductor- capacitor (LLC) battery charger that includes an isolation transformer having a transformer primary and a transformer secondary, the transformer primary included in an inductive charger station of the charging system and the transformer secondary included in an inductive power receiver of the charging system, with the inductive power receiver positioned on the electric vehicle. The LLC battery charger also includes a magnetizing inductor circuit element and a leakage inductor circuit element integrated into the isolation transformer on the transformer primary. The isolation transformer is constructed such that the transformer primary and the transformer secondary are separable from one another, with a selective engaging and disengaging of the transformer primary and the transformer secondary based on movement of the inductive power receiver on the electric vehicle relative to the inductive charger station.