IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0165049
(2011-06-21)
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등록번호 |
US-8580448
(2013-11-12)
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발명자
/ 주소 |
- Haas, Herwig
- Berretta, Francine
- Hsieh, Yvonne
- Pepin, Guy
- Roberts, Joy
- Yang, Amy Shun-Wen
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
8 |
초록
▼
By incorporating a selectively conducting component in electrical series with the anode components in a solid polymer fuel cell, degradation during startup and shutdown can be reduced. As a result, the startup and shutdown procedures can be simplified and consequently certain system apparatus may be
By incorporating a selectively conducting component in electrical series with the anode components in a solid polymer fuel cell, degradation during startup and shutdown can be reduced. As a result, the startup and shutdown procedures can be simplified and consequently certain system apparatus may be omitted. The anode does not need to be rapidly purged with hydrogen on startup or with air on shutdown. Additionally, the auxiliary load usually employed during such purging is not required.
대표청구항
▼
1. A method for starting up a fuel cell system to supply power to a primary load, the system comprising a programmable controller for controlling a startup sequence of the system and a series stack of solid polymer electrolyte fuel cells, the fuel cells comprising a solid polymer electrolyte, a cath
1. A method for starting up a fuel cell system to supply power to a primary load, the system comprising a programmable controller for controlling a startup sequence of the system and a series stack of solid polymer electrolyte fuel cells, the fuel cells comprising a solid polymer electrolyte, a cathode, and an anode, the anode comprising anode components connected in series electrically, wherein the anode components comprise a selectively conducting component comprising a selectively conducting material, and the electrical resistance of the selectively conducting component in the presence of hydrogen is more than 100 times lower than the electrical resistance in the presence of air, the method comprising: controlling the fuel cell system according to the startup sequence; andnot purging the anode with hydrogen during the startup sequence. 2. The method of claim 1 comprising not supplying power from the fuel cell stack to an auxiliary load during the startup sequence. 3. A method for shutting down a fuel cell system to supply power to a primary load, the system comprising a programmable controller for controlling a shutdown sequence of the system and a series stack of solid polymer electrolyte fuel cells, the fuel cells comprising a solid polymer electrolyte, a cathode, and an anode, the anode comprising anode components connected in series electrically, wherein the anode components comprise a selectively conducting component comprising a selectively conducting material, and the electrical resistance of the selectively conducting component in the presence of hydrogen is more than 100 times lower than the electrical resistance in the presence of air, the method comprising: controlling the fuel cell stack according to the shutdown sequence; andnot purging the anode with air during the shutdown sequence. 4. The method of claim 3 comprising not supplying power from the fuel cell stack to an auxiliary load during the shutdown sequence. 5. The method of claim 3 comprising not purging the cathode with air during the shut-down sequence. 6. The method of claim 3 wherein the fuel cell system will be subjected to greater than 1000 startup and shutdown sequences over the lifetime of the system. 7. The method of claim 6 wherein the fuel cell system is mounted on board a vehicle and is the traction power supply for the vehicle and the primary load is the drive system for the vehicle. 8. The method of claim 3 wherein the electrical resistance of the selectively conducting component in the presence of hydrogen is more than 1000 times lower than the electrical resistance in the presence of air. 9. A fuel cell system comprising a programmable controller for controlling a startup sequence of the system and a series stack of solid polymer electrolyte fuel cells, the fuel cells comprising a solid polymer electrolyte, a cathode, and an anode, the anode comprising anode components connected in series electrically, wherein the anode components comprise a selectively conducting component comprising a selectively conducting material, and the electrical resistance of the selectively conducting component in the presence of hydrogen is more than 100 times lower than the electrical resistance in the presence of air, wherein the controller is configured to control the fuel cell system according to the startup method comprising: controlling the fuel cell system according to the startup sequence; andnot purging the anode with hydrogen during the startup sequence. 10. The fuel cell system of claim 9 wherein the system is absent an auxiliary load. 11. A fuel cell system comprising a programmable controller for controlling a shutdown sequence of the system and a series stack of solid polymer electrolyte fuel cells, the fuel cells comprising a solid polymer electrolyte, a cathode, and an anode, the anode comprising anode components connected in series electrically, wherein the anode components comprise a selectively conducting component comprising a selectively conducting material, and the electrical resistance of the selectively conducting component in the presence of hydrogen is more than 100 times lower than the electrical resistance in the presence of air, wherein the controller is configured to control/operate the fuel cell system according to the shutdown method comprising: controlling the fuel cell stack according to the shutdown sequence; andnot purging the anode with air during the shutdown sequence. 12. The fuel cell system of claim 11 wherein the system is absent apparatus for providing an anode air purge. 13. The fuel cell system of claim 11 wherein the system is absent an auxiliary load. 14. A fuel cell system comprising a programmable controller for controlling a startup sequence and a shutdown sequence of the system and a series stack of solid polymer electrolyte fuel cells, the fuel cells comprising a solid polymer electrolyte, a cathode, and an anode, the anode comprising anode components connected in series electrically, wherein the anode components comprise a selectively conducting component comprising a selectively conducting material, and the electrical resistance of the selectively conducting component in the presence of hydrogen is more than 100 times lower than the electrical resistance in the presence of air, wherein the controller is configured: i) to control the fuel cell system according to the startup sequence, and not to purge the anode with hydrogen during the startup sequence; andii) to control the fuel cell stack according to the shut-down sequence, and not to purge the anode with air during the shutdown sequence. 15. The fuel cell system of claim 14 wherein the fuel cell system is mounted on board a vehicle and is the traction power supply for the vehicle and the primary load is the drive system for the vehicle. 16. The method of claim 1 wherein the fuel cell system will be subjected to greater than 1000 startup and shutdown sequences over the lifetime of the system. 17. The method of claim 16 wherein the fuel cell system is mounted on board a vehicle and is the traction power supply for the vehicle and the primary load is the drive system for the vehicle. 18. The method of claim 1 wherein the electrical resistance of the selectively conducting component in the presence of hydrogen is more than 1000 times lower than the electrical resistance in the presence of air. 19. The fuel cell system of claim 9 wherein the fuel cell system is mounted on board a vehicle and is the traction power supply for the vehicle and the primary load is the drive system for the vehicle. 20. The fuel cell system of claim 11 wherein the fuel cell system is mounted on board a vehicle and is the traction power supply for the vehicle and the primary load is the drive system for the vehicle.
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