Low voltage power tap on high voltage stack

Details Low voltage power tap on high voltage stack Low voltage power tap on high voltage stack

2011-07-05

2011-07-05

Yuan, Dah-Wei D (Department: 1727)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Electrical current collector

C429S452000, C429S517000

Reexamination Certificate

active

07972749

ABSTRACT:
A fuel cell system that includes a fuel cell stack providing high voltage power. A tap is electrically coupled to the positive end of the stack to provide a positive voltage output terminal of the fuel cell stack, and a tap is electrically coupled to the negative end of the stack to provide a negative output terminal of the fuel cell stack. A low voltage tap is electrically coupled to one or more intermediate bipolar plates of the stack to provide low voltage power. Several intermediate taps can be electrically coupled to the bipolar plates, where a center intermediate tap is designated a reference potential tap. A switching network switches the several voltage potentials to provide an AC signal.

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patent: 2006/0055246 (2006-03-01), Jansen et al.
patent: WO 99/67869 (1999-12-01), None

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