[특허]Fuel cell system and motor vehicle equipped therewith

Eberspächer Climate Control Systems GmbH & Co. KG

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특허 상세정보

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Fuel cell system and motor vehicle equipped therewith

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-008/06 B60H-001/02 H01M-008/04 B60H-001/14
미국특허분류(USC)	429/408; 429/415
출원번호	US-0478959 (2009-06-05)
등록번호	US-8865357 (2014-10-21)
우선권정보	DE-10 2008 027 292 (2008-06-06)
발명자 / 주소	Kaupert, Andreas
출원인 / 주소	Eberspächer Climate Control Systems GmbH & Co. KG
대리인 / 주소	McGlew and Tuttle, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 2

초록

A fuel cell system (1), especially in a motor vehicle, is provided with at least one fuel cell (18) for generating electric current from anode gas and cathode gas, with at least one reformer (22) for generating anode gas from oxidant gas and fuel. At least one residual gas burner (26) is provided for burning anode waste gas with cathode waste gas. A recycling device (48) is provided for recycling burner waste gas to the reformer (22).

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1. A fuel cell system comprising: a reformer for generating anode gas from oxidant gas and fuel;a fuel cell for generating electric current from the anode gas generated and from cathode gas;a residual gas burner for burning anode waste gas with cathode waste gas from said fuel cell, wherein said residual burner generates burner waste gas; anda recycling means for recycling burner waste gas to said reformer, said recycling means comprising a valve arrangement, said valve arrangement having an outlet side and an inlet side, said outlet side being connected to said reformer via at least one first return line section, said inlet side being connected to a burner waste gas tapping point via a second return line section and said inlet side being connected to an anode waste gas tapping point via a third return line section, said anode waste gas tapping point comprising two anode waste gas tapping portions, wherein one of said anode waste gas tapping portions supplies anode waste gas to said residual burner and another one of said anode waste gas tapping portions supplies anode waste gas to said reformer via at least said valve arrangement, said valve arrangement comprising one or more valves, said burner waste gas being transferred from said residual gas burner to said valve arrangement via said second return line section to define at least a portion of a burner waste gas flow path. 2. A fuel cell system in accordance with claim 1, wherein said recycling means is also for recycling anode waste gas to said reformer, said anode waste gas tapping point being located between said fuel cell and said residual gas burner, said anode waste gas being transferred from said anode waste gas tapping point to said valve arrangement via said second return line section to define at least a portion of an anode waste gas flow path. 3. A fuel cell system in accordance with claim 1, further comprising: an air supply means for supplying said fuel cell with cathode gas via a supply line; anda shut-off valve arranged in said supply line for shutting off said supply line when the fuel cell system is turned off. 4. A fuel cell system in accordance with claim 3, further comprising: another air supply means for supplying said reformer with oxidant gas via another supply line; andanother shut-off valve arranged in said another supply line for shutting off said another supply line when the fuel cell system is turned off. 5. A fuel cell system in accordance with claim 4, further comprising: a waste gas line removing the burner waste gas from said residual gas burner; anda further shut-off valve arranged in said waste gas line for shutting off the waste gas line when the fuel cell system is turned off. 6. A fuel cell system in accordance with claim 5, further comprising: a control means coupled with said valve arrangement and at least one of said shut-off valve, said another shut-off valve and said further shut-off valve for shutting off the respective line when the fuel cell system is turned off and for selecting a position of said valve arrangement, wherein said control means switches said valve arrangement between a first position and a second position, at least said first return line section being in communication with said second return line section and said third return line section with said valve arrangement in said first position, said third return line section being in communication with a bypass line with said valve arrangement in said second position, said bypass line being connected to said outlet side, said bypass line bypassing a heat exchanger, wherein non-cooled anode waste gas is transferred to said reformer via said bypass line with said valve arrangement in said second position. 7. A fuel cell system in accordance with claim 5, wherein at least two of said shut-off valve, said another shut-off valve and said further shut-off valve are combined in a common housing to form a shut-off valve arrangement. 8. A fuel cell system in accordance with claim 7, wherein the shut-off valve arrangement has a common actuator with which the at least two shut-off valves of a shut-off valve arrangement are simultaneously actuatable. 9. A fuel cell system in accordance with claim 1, further comprising: a waste gas line removing the burner waste gas from the residual gas burner; anda main heat exchanger for preheating the cathode waste gas, said main heat exchanger being arranged in said waste gas line, said main heat exchanger receiving said burner waste gas from said residual gas burner via said waste gas line. 10. A fuel cell system in accordance with claim 9, further comprising: a motor vehicle equipped with said fuel cell, said reformer, said residual gas burner and said recycling means as well as a motor vehicle air conditioning unit; anda heating heat exchanger arranged in said air conditioning unit, said heating heat exchanger for heating air fed into the interior space of the motor vehicle, said heating heat exchanger being arranged in the waste gas line downstream of said main heat exchanger. 11. A fuel cell system in accordance with claim 10, wherein said air conditioning unit heats the air fed into the interior space of the vehicle exclusively with the heating heat exchanger. 12. A fuel cell system in accordance with claim 10, wherein the waste gas line is connected to an air conditioning module of said air conditioning unit, said module containing said heating heat exchanger. 13. A fuel cell system in accordance with claim 10, further comprising: an auxiliary heat exchanger arranged in a cooling circuit of an internal combustion engine of said motor vehicle, said auxiliary heat exchanger for heating a coolant of said cooling circuit during a cold start of the internal combustion engine, said auxiliary heat exchanger being arranged in the waste gas line downstream of said main heat exchanger, wherein said auxiliary heat exchanger is arrangable in the waste gas line upstream or downstream of said heating heat exchanger. 14. A fuel cell system in accordance with claim 1, wherein said another one of said anode waste gas tapping portions is located upstream of said fuel cell. 15. A fuel cell system comprising: a reformer for generating anode gas from oxidant gas and fuel;a fuel cell for generating electric current from the anode gas generated and from cathode gas;a residual gas burner for burning anode waste gas with cathode waste gas from said fuel cell, wherein said residual burner generates burner waste gas; anda recycling means for recycling fluid to said reformer, said recycling means comprising a valve arrangement, said valve arrangement having an outlet side and an inlet side, said outlet side being connected to said reformer, said inlet side being connected to a burner waste gas tapping point and an anode waste gas tapping point, said anode waste gas tapping point having a first anode waste gas tapping portion and a second anode waste gas tapping portion, wherein anode waste gas is supplied to said residual burner via said first anode waste gas tapping portion and anode waste gas is supplied to said reformer via at least said second anode waste gas tapping portion and said valve arrangement, said valve arrangement comprising one or more valves, wherein said burner waste gas is transferred from said burner waste gas tapping point to said valve arrangement. 16. A fuel cell system in accordance with claim 15, wherein said second anode waste gas tapping portion is located upstream of said fuel cell. 17. A fuel cell system in accordance with claim 15, wherein said first anode waste gas tapping portion is located between said residual gas burner and said fuel cell. 18. A fuel cell system comprising: a reformer for generating anode gas from oxidant gas and fuel;a fuel cell for generating electric current from the anode gas generated and from cathode gas, said fuel cell generating anode waste gas;a residual gas burner for burning anode waste gas with cathode waste gas from said fuel cell, wherein said residual burner generates burner waste gas; anda recycling means for recycling fluid to said reformer, said recycling means comprising a valve arrangement, said valve arrangement having an outlet side and an inlet side, said outlet side being connected to said reformer, said inlet side being connected to a burner waste gas tapping point and an anode waste gas tapping point, said anode waste gas tapping point comprising two anode waste gas tapping portions, wherein anode waste gas is supplied to said residual burner via one of said two anode waste gas tapping portions and anode waste gas is supplied to said reformer via at least said valve arrangement and another one of said two anode waste gas tapping portions, said valve arrangement comprising one or more valves, said burner waste gas being transferred from said burner waste gas tapping point to at least said valve arrangement. 19. A fuel cell system in accordance with claim 18, wherein said another one of said two anode waste gas tapping portions is located upstream of said fuel cell. 20. A fuel cell system in accordance with claim 18, wherein said one of said anode waste gas tapping portions is located between said residual gas burner and said fuel cell. 21. A fuel cell system in accordance with claim 18, wherein said burner waste gas is transferred from said burner waste gas tapping point to said reformer via at least said valve arrangement.

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Fuel cell system and motor vehicle equipped therewith

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Fuel cell system and motor vehicle equipped therewith

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