Contactless battery charging system with high voltage cable

Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries

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333 12, H01M 1046

Patent

active

055680364

ABSTRACT:
A high voltage cable system for use with a contactless battery charging system that charge propulsion batteries of an electric vehicle, and the like. The contactless battery charging system includes a primary power converter coupled to a power source and a secondary power converter located on the electric vehicle that is coupled propulsion batteries of the electric vehicle. The primary and secondary power converters are connected by way of a coaxial power cable. An isolation transformer is coupled between the output of the primary power converter and the coaxial power cable. This transformer allows one of the two outputs of the primary power converter to be connected to ground potential. The isolation transformer improves the safety and reduces electromagnetic interference (EMI) when coupling power to the secondary power converter. The isolation transformer 30 allows for the use of a stepped-up voltage level to be used in the primary power converter, which reduces the amount of current in the coaxial power cable required to deliver power to the secondary converter. This allows a much higher charge power to be delivered to the electric vehicle using a reasonably sized coaxial power cable.

REFERENCES:
patent: 2708719 (1955-05-01), Roach
patent: 5157319 (1992-10-01), Klontz et al.
patent: 5216402 (1993-06-01), Carosa
patent: 5301096 (1994-04-01), Klontz et al.
patent: 5323099 (1994-06-01), Bruni et al.
patent: 5327065 (1994-07-01), Bruni et al.
patent: 5341281 (1994-08-01), Skibinski
patent: 5461299 (1995-10-01), Bruni
1991 IEEE Industry Applications Society Annual Meeting, 28 Oct. 1991-1 Nov. 1991 Dearborn, pp. 1263-1269, XP 000299576 Klontz et al.

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