Initiating operation of an electric vehicle or other load powered by a fuel cell at sub-freezing temperature
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-008/04
H01M-008/10
출원번호
US-0390439
(2003-03-17)
발명자
/ 주소
Reiser, Carl A.
Resnick, Gennady
Popovich, Neil A.
출원인 / 주소
UTC Fuel Cells, LLC
대리인 / 주소
Williams, M. P.
인용정보
피인용 횟수 :
8인용 특허 :
2
초록▼
A vehicle (150) includes a fuel cell stack (151) started when the stack is below freezing, by connection (158) to the vehicle propulsion system (159) within a few seconds of starting the flow of fuel (179) and oxidant (173), or when open circuit voltage (155, 156) is detected. The fuel is in excess
A vehicle (150) includes a fuel cell stack (151) started when the stack is below freezing, by connection (158) to the vehicle propulsion system (159) within a few seconds of starting the flow of fuel (179) and oxidant (173), or when open circuit voltage (155, 156) is detected. The fuel is in excess of stochiometry requirement and the oxidant is in excess of at least twice stochiometric requirement, either may be at about atmospheric pressure or at 4 kPa (0.6 psi) or more above the pressure of any water in said water passages, and either may be below freezing. Water transport plates (84, 86, 88, 89) have water passages connected to a water circulation loop (170) including a reservoir (164) having an auxiliary heater (161) connected (160) to the stack. Warming of cell stack materials and ice in the water transport plates, heat of fusion of melting ice, warming of melted water, and evaporative cooling of water melted in the water transport plates keep the fuel cell cool until liquid coolant can be circulated.
대표청구항▼
A vehicle (150) includes a fuel cell stack (151) started when the stack is below freezing, by connection (158) to the vehicle propulsion system (159) within a few seconds of starting the flow of fuel (179) and oxidant (173), or when open circuit voltage (155, 156) is detected. The fuel is in excess
A vehicle (150) includes a fuel cell stack (151) started when the stack is below freezing, by connection (158) to the vehicle propulsion system (159) within a few seconds of starting the flow of fuel (179) and oxidant (173), or when open circuit voltage (155, 156) is detected. The fuel is in excess of stochiometry requirement and the oxidant is in excess of at least twice stochiometric requirement, either may be at about atmospheric pressure or at 4 kPa (0.6 psi) or more above the pressure of any water in said water passages, and either may be below freezing. Water transport plates (84, 86, 88, 89) have water passages connected to a water circulation loop (170) including a reservoir (164) having an auxiliary heater (161) connected (160) to the stack. Warming of cell stack materials and ice in the water transport plates, heat of fusion of melting ice, warming of melted water, and evaporative cooling of water melted in the water transport plates keep the fuel cell cool until liquid coolant can be circulated. d. along with a magnetic recording medium using the medium substrate and a magnetic disk device. 10/636; US-4895685, 19900100, Honda et al., 264/045.5; US-4908137, 19900300, Chen et al., 210/679; US-4915839, 19900400, Marinaccio et al., 210/500.23; US-4925572, 19900500, Pall, 210/767; US-4936998, 19900600, Nishimura et al., 210/638; US-4944879, 19900700, Steuck, 210/500.27; US-4946603, 19900800, Laugharn et al., 210/807; US-4950549, 19900800, Rolando et al., 428/500; US-4981591, 19910100, Ostreicher, 210/502.1; US-5004543, 19910400, Pluskal et al., 210/490; US-5039797, 19910800, Clack et al., 528/405; US-5049275, 19910900, Gillberg-LaForce et al., 210/500.27; US-5049282, 19910900, Linder et al., 210/651; US-5059654, 19911000, Hou et al., 525/054.1; US-5085780, 19920200, Ostreicher, 210/683;
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이 특허에 인용된 특허 (2)
Fletcher Nicholas J.,CAX ; Boehm Gustav A.,DEX ; Pow Eric G.,CAX, Method and apparatus for commencing operation of a fuel cell electric power generation system below the freezing temper.
Joy A. Roberts CA; Jean St-Pierre CA; Marian E. van der Geest CA; Abderrahmane Atbi CA; Nicholas J. Fletcher CA, Method for improving the cold starting capability of an electrochemical fuel cell.
Breault,Richard D., PEM fuel cell with high porosity hydrophilic water transport plates and temperature increase before shutdown in environment which may reach subfreezing temperatures.
Darling, Robert M.; Evans, Craig E.; Reiser, Carl A.; Skiba, Tommy; Balliet, Ryan J., Retaining water in a fuel cell stack for cooling and humidification during frozen startup.
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