Electricity: conductors and insulators – Conduits – cables or conductors – Insulated
Patent
1996-07-26
1998-07-07
Kincaid, Kristine L.
Electricity: conductors and insulators
Conduits, cables or conductors
Insulated
174116, H01B 1102
Patent
active
057772738
ABSTRACT:
An electrical cable for use in high-frequency, high power applications, such as with an inductive charging system used to charge batteries of an electric vehicle. The cable has multiple twisted-pairs of separately insulated stranded wire arranged in a pseudo-Litz wire architecture that surround a coaxial cable. The coaxial cable carries bidirectional RF communication signals between a power source of the charging system and the vehicle. The cable has an outer EMI shield that includes a metalized mylar layer surrounded by a high coverage tinned-copper braid layer. The multiple twisted-pairs of wires and coaxial cable are embedded in a polytetrafluoroethylene filler material that surrounds them inside the outer EMI shield. An outer silicone cover is disposed around the outside of the cable. The cable efficiently transfers power at high-frequency AC power, between 100 KHz to 400 KHz at high-voltage levels, on the order of from 230 V to 430 V. The cable carries bidirectional RF communication signals using a 91.5 MHz carrier frequency. The cable is designed for use in an outdoor operating environment while maintaining its flexibility. The cable also has sufficient shielding to maintain EMI compatibility with other consumer products.
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Downer Scott D.
Woody George R.
Delco Electronics Corp.
Kincaid Kristine L.
Navarre Mark A.
Nguyen Chau N.
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