WO2010066442A1 - Système de pile à combustible avec plus grande sécurité de fonctionnement - Google Patents

Système de pile à combustible avec plus grande sécurité de fonctionnement Download PDF

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Publication number
WO2010066442A1
WO2010066442A1 PCT/EP2009/008882 EP2009008882W WO2010066442A1 WO 2010066442 A1 WO2010066442 A1 WO 2010066442A1 EP 2009008882 W EP2009008882 W EP 2009008882W WO 2010066442 A1 WO2010066442 A1 WO 2010066442A1
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WO
WIPO (PCT)
Prior art keywords
fuel cell
cell system
supply
fluid
sensors
Prior art date
Application number
PCT/EP2009/008882
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English (en)
Inventor
Sascha Kuehn
Original Assignee
Ezelleron Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ezelleron Gmbh filed Critical Ezelleron Gmbh
Priority to DE112009003591T priority Critical patent/DE112009003591T5/de
Publication of WO2010066442A1 publication Critical patent/WO2010066442A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0432—Temperature; Ambient temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0438—Pressure; Ambient pressure; Flow
    • H01M8/04388—Pressure; Ambient pressure; Flow of anode reactants at the inlet or inside the fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0438—Pressure; Ambient pressure; Flow
    • H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0438—Pressure; Ambient pressure; Flow
    • H01M8/04425—Pressure; Ambient pressure; Flow at auxiliary devices, e.g. reformers, compressors, burners
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0444—Concentration; Density
    • H01M8/04462—Concentration; Density of anode exhausts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0444—Concentration; Density
    • H01M8/0447—Concentration; Density of cathode exhausts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04544—Voltage
    • H01M8/04552—Voltage of the individual fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04544—Voltage
    • H01M8/04559—Voltage of fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04574—Current
    • H01M8/04582—Current of the individual fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04574—Current
    • H01M8/04589—Current of fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04701—Temperature
    • H01M8/04731—Temperature of other components of a fuel cell or fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04746—Pressure; Flow
    • H01M8/04753—Pressure; Flow of fuel cell reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04746—Pressure; Flow
    • H01M8/04761—Pressure; Flow of fuel cell exhausts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04746—Pressure; Flow
    • H01M8/04768—Pressure; Flow of the coolant
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04955—Shut-off or shut-down of fuel cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • H01M2008/1293—Fuel cells with solid oxide electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/1009—Fuel cells with solid electrolytes with one of the reactants being liquid, solid or liquid-charged
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the invention concerns fuel cell systems that achieve an increased level of operating safety.
  • Especially mobile or portable fuel cell systems require special safety in order to be able to prevent incorrect handling on the part of the user.
  • Especially critical for small portable devices is the gas supply.
  • the fuel (oxidizable component) for the fuel cell system are carried and the oxygen as the oxidizing agent is drawn from the surrounding air. If, however, due to incorrect storage, blockage or other circumstances the supply of air becomes impossible or is impermis- sibly prevented, then operating-critical or possibly also system-critical conditions can be reached. The same applies to the exhaust gas of such fuel cell systems.
  • Fuel cells have long been known as tertiary galvanic elements.
  • the solid oxide fuel cells have a prominent position due to the greatest flexibility for the fuel. Because of the high working temperature of mostly above 600 0 C, however, thermal losses, especially with small systems are of decisive importance. This is also the reason why the greater part of the SOFC applications (solid oxide fuel cells) are not designed for small mobile or portable systems (Fuel Cell Handbook 7th edition, EG&G Services, Inc. U.S. Department of Energy, Office of Fossil Energy, National Energy Technology Laboratory, Morgantown, West Virginia, November 2004; Handbook of Fuel Cells Fundamentals, Tech- nology and Application, Wolf Dahlstich, Hubert A. Gasteiger, Arnold Lamm, 2003 John Wiley & Sons, Ltd.) . Potential problems and, above all, critical conditions occur due to storage errors and/or accidental blockage of the gas pathways that cannot be prevented a hundred percent.
  • a fuel cell system there is at least one supply for at least one oxidi- zable fluid, at least one supply for at least one oxidizing fluid and at least one exhaust for at least one exhaust gas and, in addition, a sensor that detects a system- and/or safety critical condition and in this way completely or partially closes and/or opens at least one supply pipe for oxidizable fluid and/or oxidizing fluid and/or the exhaust pipe for exhaust gas with at least one closing device.
  • a system- critical or safety-critical condition can be stopped or prevented by means of closing of valves of the ex- haust gas flow and/or the supply of the oxidizing- acting and/or oxidizable component/ fluid.
  • System- critical and/or safety-critical conditions can be for instance, overheating, overpressure, drop of performance, loss of pressure, uncontrolled fuel exit, tank leak, formation of explosive atmospheres.
  • a supply pipe can be opened for a non- , or hardly oxidizable fluid.
  • the supplied volume flow can be controlled or regulated.
  • the electric load can be reduced, switched off or increased.
  • Sensors can be those that are selected from pressure sensors, flow sensors, electrical sensors for the detection of electrical current and/or electrical voltage, temperature sensors, concentration-determining sensors, contact sensors and inclination sensors.
  • An inclination sensor is preferably used in order to detect unwanted arrangement of the fuel cell system. In this way it can be prevented that the fuel cell system goes into operation or remains in operation when it is placed on an outer surface of the system, whereby the opening for the exhaust gas is closed and/or this leads to the fuel supply, in the case of a liquid fuel (e.g. fluid gas, ethanol, methanol) not being ensured because, for instance, the supply pipe, because of the unsuitable position for operation, is not filled sufficiently with the fluid.
  • a liquid fuel e.g. fluid gas, ethanol, methanol
  • Temperature sensors are used for instance for the detection of a fracture of the fuel cell, a sealing failure or a leak in the system in which the mixing of the oxidizable and reducible atmospheres occurs which could lead to the formation of flames .
  • a pressure sensor can be used for detecting insuffi- cient leak- tightness of the pipes and/or the connections between pipes and/or the connections between a preferably replaceable tank and the fuel cell supply system.
  • the detection of the electrical voltage and/or the current of the fuel cells can, for instance, be used as a criterion for insufficient gas supply, too high or too low temperature and/or pressure and/or the composition for the supply media.
  • Concentration sensors are used for instance for the detection of explosive mixtures especially still before the ignition temperature of possibly critical mixtures is reached and preferably also for the de- tection of too high concentrations of poisonous (e.g. carbon-monoxide) and/or very odorous substances in the system exhaust gas .
  • poisonous e.g. carbon-monoxide
  • the checking of the respective conditions of the sen- sors and/or the system can be carried out by means of chemical and/or physical (electrical and/or mechani- cal) control devices.
  • the heat effect of a chemical reaction can be used for detection of injurious components in the fuel cell supply or exhaust pipes.
  • One possibility would be the detec- tion of absorption heat of poisonous (e.g. carbon monoxide) and/or system- injurious (e.g. hydrogen sulphide) substances.
  • poisonous e.g. carbon monoxide
  • system- injurious e.g. hydrogen sulphide
  • Valves can be regulated or controlled. This provides the possibility of completely or only par- tially opening or closing the pipes so that the respective advantageous volume flows are supplied or exhausted.
  • micro- tubular SOFCs should be emphasised, as these - due to their high resistance against thermal shock - for instance in the case of an interrupted fuel supply or an increased supply of oxidizing gas (air or oxygen) on the anode side can be cooled extremely quickly whereby a re-oxidation of the anode and thus damage to the fuel cell can be prevented.
  • these fuel cells can be quickly cooled off, in the case of, for instance, insufficient reforming, disadvantageous fuel mixture, , thus preventing soot formation.
  • the supply of oxidizable fluid/gas can be interrupted in the case of interrupted supply of oxidizing gas. This is possible also for mobile systems and especially also for systems with micro-tubular solid oxide fuel cells .
  • the supply of the oxidizable gas can be closed or reduced by means of a mechanical device, an electrical device, a pneumatic device, a combina- tion of electrical and/or mechanical and/or pneumatic device .
  • a supply pipe may be also closed by a component which is integrated in at least one supply pipe.
  • a component is built from a material having a melting point at a critical temperature for the system or safety such that at will be melt if the critical temperature is reached and thereby the supply pipe will be closed.
  • the incoming oxidizing gas can open a valve that operates a contact switch by means of which a valve for the oxidizable gas can be opened or kept open .
  • the opening and/or keeping open of a valve for the oxidizable gas is possible.
  • the opening or keeping open of at least one valve for the oxidizable gas is possible depending on a measuring signal that can be detected with a flow sensor for the outflowing exhaust gas and/or the incoming oxidizing gas.
  • This can also be achieved in dependence on the measured electrical voltage or the electrical current of one or more fuel cells of the system, in dependence on a temperature measurement, in dependence on a pressure measurement, in dependence of a concentration determination of individual gas components or in dependence of a defined inclination angle of the system.
  • a fuel cell system can be used in which valves at least partly open and/or close the pipes due to control of the influence of temperature and preferably are subjected to a deformation influenced by the temperature which is used for the opening and/or closing of the pipes and especially preferred designed on a bi-metallic basis.
  • valves can be switched or influenced by means of changes in pressure and/or expansion or contraction of a fluid or gaseous component.
  • SOFCs can be cooled down for the prevention of system-critical conditions with corresponding temperature gradients.
  • a critical condition can also be stopped or prevented by the closing of valves of the exhaust gas flow and/or the increase of the flow rate of the oxidizing component to the cathode (s) and in this way the temperature can be correspondingly lowered.
  • System-critical or safety-critical conditions can also be prevented by increasing or reducing the cur- rent taken from the fuel cells.
  • the electrical load can be increased, lowered, minimised or maximised.
  • a non- , or difficult oxidizable gas e.g. nitrogen
  • This medium can be provided in a tank integrated in the system.
  • a further embodiment of the invention exists in that, by means of a sensor, the supply of a cooling and/or thinning fluid, preferably by activating a ventilator and/or a pump, can be activated.
  • the fuel cell system characterised in that at least the hot components of the system are stored in a sprung manner and/or the housing of the system possesses an impact- and/or vibration-damping layer.
  • An uncritical condition can be reached again by cooling when at a particular place such as at the gas outlet or at the system' s shell /housing a too-high temperature was measured which can be caused, for in- stance, by insufficient ventilation.
  • a too-high temperature can be measured which can be caused, for in- stance, by insufficient ventilation.
  • additionally other already mentioned measures can be taken at the same time.
  • Figure 1 A sensor in the form of a contact switch for influencing a valve in the case of exiting fluid
  • Figure 2 An example of a fuel inlet that can be influenced by temperature and pressure.
  • Figure 1 shows how the incoming or outgoing fluid 4 in the system opens a flap 3.
  • This opening leads to a contact between the electrically conducting flap 3 and the sensor 1.
  • the sensor 1 can detect the opening of the flap 3 by transmitting a signal through the line 2 and can trigger, for instance, the opening of the valve 5 for the supply of the fuel (possibly with a time delay) or in the reverse case, the closing of the valve 5 (possibly with a time delay) .
  • FIG. 2 shows a possibility of how the fuel supply can be shut and regulated with an embodiment of the invention.
  • a heat emitting component 7 of a fuel cell system can be a fuel cell and/or burner and/or a reformer.
  • the pressure in the gas stored in the storage 6 increases depending on the heat emitted.
  • This gas exerts a force on the closing device 8.
  • This closing device 8 is linked via a connection 10 with a spring

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne des systèmes de pile à combustible qui obtiennent un plus grand niveau de sécurité de fonctionnement. Selon l'invention, la sécurité de fonctionnement de systèmes de pile à combustible dans lesquels se produisent des conditions critiques pour le système et/ou la sécurité peut être augmentée d'une manière simple et économique. Dans un système de pile à combustible selon l'invention, il existe au moins une alimentation en au moins un fluide oxydable, au moins une alimentation en au moins un fluide oxydant, et au moins un échappement pour au moins un gaz d'échappement. À l'aide d'au moins un capteur, une condition critique pour le système et/ou la sécurité peut être détectée et, ainsi, au moins un des tuyaux d'alimentation en fluide oxydable et/ou d’alimentation en fluide oxydant et/ou d'échappement pour les gaz d'échappement peut être complètement ou partiellement fermé et/ou ouvert au moyen d'au moins un dispositif de fermeture. En plus ou indépendamment, un  tuyau d'alimentation en fluide non oxydable ou difficilement oxydable peut être libéré et/ou la charge électrique peut être modifiée ou mise hors tension.
PCT/EP2009/008882 2008-12-11 2009-12-11 Système de pile à combustible avec plus grande sécurité de fonctionnement WO2010066442A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112009003591T DE112009003591T5 (de) 2008-12-11 2009-12-11 Brennstoffzellensystem mit erhöhter Betriebssicherheit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008062616.3 2008-12-11
DE102008062616 2008-12-11

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198664A (en) * 1961-11-30 1965-08-03 United Aircraft Corp Fuel cell system
US4393123A (en) * 1982-02-01 1983-07-12 Energy Research Corporation Fuel cell temperature control assembly
JPH0240865A (ja) * 1988-08-01 1990-02-09 Hitachi Ltd 燃料電池の温度制御装置
JP2001229942A (ja) * 2000-02-14 2001-08-24 Nissan Motor Co Ltd 燃料電池の安全装置
WO2008066817A1 (fr) * 2006-11-29 2008-06-05 Bloom Energy Corporation Systèmes de pile à combustible à utilisation de combustible et contrôle d'oxydation
US20080176121A1 (en) * 2006-10-18 2008-07-24 Olympus Imaging Corp. Fuel battery system and device for terminal using the fuel battery system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198664A (en) * 1961-11-30 1965-08-03 United Aircraft Corp Fuel cell system
US4393123A (en) * 1982-02-01 1983-07-12 Energy Research Corporation Fuel cell temperature control assembly
JPH0240865A (ja) * 1988-08-01 1990-02-09 Hitachi Ltd 燃料電池の温度制御装置
JP2001229942A (ja) * 2000-02-14 2001-08-24 Nissan Motor Co Ltd 燃料電池の安全装置
US20080176121A1 (en) * 2006-10-18 2008-07-24 Olympus Imaging Corp. Fuel battery system and device for terminal using the fuel battery system
WO2008066817A1 (fr) * 2006-11-29 2008-06-05 Bloom Energy Corporation Systèmes de pile à combustible à utilisation de combustible et contrôle d'oxydation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Handbook of Fuel Cells Fundamentals, Technology and Application", November 2004, JOHN WILEY & SONS, article "Handbook 7th edition, EG&G Services, Inc. U.S. Department of Energy, Office of Fossil Energy, National Energy Technology Laboratory"

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