Method and apparatus for starting a fuel cell engine in a...

Details Method and apparatus for starting a fuel cell engine in a... Method and apparatus for starting a fuel cell engine in a...

2011-01-04

2011-01-04

Crepeau, Jonathan (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

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

Process or means for control of operation

C429S432000

Reexamination Certificate

active

07862943

ABSTRACT:
A hybrid fuel cell system that employs a fuel cell stack and an ultracapacitor. A diode is provided on a high voltage electrical bus between the fuel cell stack and the ultracapacitor so that high voltage from the ultracapacitor does not affect the operation of the fuel cell stack. During system start-up, a by-pass switch is closed to by-pass the ultracapacitor so that power from the ultracapacitor can be used to start various system loads, such as a cathode side air compressor that provides air to the fuel cell stack. A 12 volt-to-high voltage converter is employed to provide a low power, high voltage supply from a low voltage battery to the system loads at start-up when the by-pass switch is opened, but before a fuel cell stack switch is closed.

REFERENCES:
patent: 2006/0076171 (2006-04-01), Donnelly et al.
patent: 2006/0083965 (2006-04-01), Rainville et al.
patent: 2006/0127704 (2006-06-01), Raiser

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