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특허 상세정보

Process for supplying air to a fuel cell system

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H01M-008/04   
미국특허분류(USC) 429/13 ; 429/17
출원번호 US-0400931 (1995-03-09)
우선권정보 DE-4318818 (1994-06-07)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 73  인용 특허 : 0
초록

A process and an apparatus control output of an air-breathing fuel cell system which consists of an air supply line, a fuel cell, an air exhaust line, and a separate gas supply system for hydrogen gas. To control the fuel cell output, an adjustable rotary speed compressor is located in the air supply line and a variable absorption capacity expander is located in the air exhaust line. The compressor, the expander, and an additional electric motor are positioned on a common shaft. The expander converts the pressure energy contained in the exhaust air into ...

대표
청구항

A process for operating an apparatus controlling output of an air-breathing fuel cell system, comprising the steps of determining, based on measured fuel cell current, a desired value for air volume flow, regulating an actual value of the air volume flow by adjusting rotary speed of a compressor to the desired value, and adjusting pressure in a cathode space of the fuel cell to a predetermined working pressure by adjusting an expander absorption capacity.

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