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특허 상세정보

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내보내기 페이스북 공유 카카오톡 공유

Method and apparatus for operating a fuel cell

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H01M-008/04   
미국특허분류(USC) 429/013; 429/022; 429/023
출원번호 US-0455033 (1999-12-06)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    McAndrews, Held & Malloy, Ltd.
인용정보 피인용 횟수 : 75  인용 특허 : 12
초록
▼

The present invention relates to improving the overall efficiency of a fuel cell system by reducing parasitic power consumption. A controller is programmed to decrease oxidant stoichiometry until oxidant starvation is detected or until oxidant stoichiometry is about one. When oxidant starvation is detected, the oxidant stoichiometry is increased until oxidant starvation is no longer detected. The fuel cell system employs a sensor for detecting an operational characteristic such as voltage output, or oxygen or hydrogen concentration in the cathode exhaust...

대표
청구항

1. A method of operating a fuel cell, wherein said fuel cell has a cathode supplied with an oxidant stream and an anode supplied with a fuel stream, said method comprising:(a) monitoring a cathode exhaust stream downstream of said cathode to detect hydrogen gas concentration; and (b) decreasing oxidant stoichiometry when said hydrogen gas concentration is less than a first threshold concentration.

이 특허에 인용된 특허 (12)

  1. Palmer Ian (Cumbria GBX) Seymour Clive M. (Cumbria GBX) Dams Robert A. J. (West Sussex GBX). Application of fuel cells to power generation systems. USP1995035401589.
  2. Scheffler Glenn W. (Tolland CT) Vartanian George (Ellington CT). Cathode flow control for fuel cell power plant. USP1989084859545.
  3. Merritt Robert D. (Vancouver CAX) Blair James D. (Burnaby CAX). Constant voltage fuel cell with improved reactant supply and control system. USP1994115366821.
  4. McIlhenny William F. (Lake Jackson TX). Directly electrically coupled fuel cell-electrolysis cell system. USP1987084689133.
  5. Gordon Arnold Z. (Lyndhurst OH) Yeager Ernest B. (East Cleveland OH) Tryk Donald A. (Cleveland Heights OH) Hossain M. Sohrab (Cleveland OH). Gas diffusion electrodes, electrochemical cells and methods exhibiting improved voltage performance. USP1988114787964.
  6. Reiser Carl A. (Glastonbury CT) Landau Michael B. (West Hartford CT). Method for reducing fuel cell output voltage to permit low power operation. USP1980054202933.
  7. Mufford W. Edward,CAX ; Strasky Douglas G.,CAX. Power control system for a fuel cell powered vehicle. USP1998065771476.
  8. Mufford W. Edward,CAX ; Strasky Douglas G.,CAX. Power control system for a fuel cell powered vehicle. USP1999115991670.
  9. Fleck Wolfram (Erbach DEX). Process and apparatus for humidifying process gas for operating fuel cell systems. USP1995075432020.
  10. Benz Uwe (Uhldingen DEX) Fleck Wolfram (Erbach DEX) Hornburg Gerald (Elchingen DEX). Process and apparatus for supplying air to a fuel cell system. USP1995075434016.
  11. Sonntag Josef,DEX ; Lorenz Helmut,DEX. Process for dynamically adjusting the power for a vehicle having a fuel cell. USP1998075780981.
  12. Benz Uwe (Uhldingen DEX) Fleck Wolfram (Erbach DEX) Hornburg Gerald (Elchingen DEX). Process for supplying air to a fuel cell system. USP1997075645950.

이 특허를 인용한 특허 피인용횟수: 75

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