EP2258018A1 - Système de piles à combustible et procédé d'exploitation d'un système de piles à combustible - Google Patents

Système de piles à combustible et procédé d'exploitation d'un système de piles à combustible

Info

Publication number
EP2258018A1
EP2258018A1 EP09727278A EP09727278A EP2258018A1 EP 2258018 A1 EP2258018 A1 EP 2258018A1 EP 09727278 A EP09727278 A EP 09727278A EP 09727278 A EP09727278 A EP 09727278A EP 2258018 A1 EP2258018 A1 EP 2258018A1
Authority
EP
European Patent Office
Prior art keywords
fuel cell
space
housing
cell device
medium
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP09727278A
Other languages
German (de)
English (en)
Inventor
Ralf NÜSSLE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
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 Daimler AG filed Critical Daimler AG
Publication of EP2258018A1 publication Critical patent/EP2258018A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • H01M8/2475—Enclosures, casings or containers 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
    • H01M8/0444—Concentration; Density
    • 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
    • H01M8/04447—Concentration; Density 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
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04746—Pressure; Flow
    • 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
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
    • 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
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • 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 relates to a fuel cell device having at least one fuel cell, which has an anode space and a cathode space and is arranged in a housing.
  • a flushing medium for flushing the housing can be introduced into the housing outside the fuel cell.
  • the invention relates to a method for operating a fuel cell device, in which a flushing medium for flushing the housing, in which a fuel cell is arranged, is introduced into the housing outside the fuel cell.
  • Such a fuel cell device and such a method is known from WO 2005/099017 A2. There is supplied as flushing medium ambient air from the outside.
  • the housing serves to catch any leaks in the fuel cell stack, in particular the anode, and the associated hydrogen emissions and to direct it to a specific location in order to protect fuel cell stacks from external influences such as dirt, dust, water, etc.
  • the problem here is that it is due to the leakage of the fuel cell stack Within the housing can come to gas mixtures, which form a combustible or explosive gas mixture due to their composition.
  • the fan of the fuel cell device according to WO 2005/099017 A2 also serves to supply air to the cathode.
  • a discharge line is arranged on the housing, which opens, for example, in an exhaust air or exhaust gas channel.
  • a problem here is that extra a separate blower must be provided in order to realize the flow can. This fan must be driven accordingly with a motor, which has a negative effect on the overall efficiency of the system. However, it does not contribute to energy conversion.
  • the blower usually has a limited capacity and thus can only promote a certain, relatively small air flow, whereby a permanent operation is required.
  • a sensor can be arranged within the housing, which measures the hydrogen concentration in the housing. If this concentration is above a certain limit, the entire fuel cell system is switched off, as the fan may not be able to deliver more or not sufficiently to reduce the hydrogen concentration in the housing accordingly.
  • a flushing with ambient air is, inter alia, disadvantageous because it contains about 21% oxygen, which ultimately represents a component of the gas mixture, which can be potentially explosive with appropriate hydrogen concentration.
  • the noise of the fan can be distracting.
  • fuel cell systems are also known in which, for example, branches behind an air filter unit in the intake of the compressor for the cathode compartment of the fuel cell system, a line which opens into the housing.
  • a fan is also arranged, which promotes the branched air into the housing.
  • the then again derived from the housing medium is introduced before the compressor in the intake path for the cathode compartment.
  • the gas mixture of the housing is thus supplied to the compressor, which sucks the gas mixture and supplies the cathode space of the fuel cell.
  • the possibly very small amount of hydrogen, which is discharged from the housing with, is then diluted again by the intake air of the compressor from the environment.
  • the gas stream is then compressed and fed to the cathode, where then reacts the very small proportion of hydrogen chemically. This is to ensure that no hydrogen emissions come to the outside or into the environment.
  • the blower in this branching line what has already been said above applies, whereby here too the blower is permanently operated at a stationary point and the housing is permanently flushed through.
  • a fuel cell device comprises at least one fuel cell, which has an anode space and a cathode space and is arranged in a housing.
  • a flushing medium for flushing the housing can be introduced into the housing in a space outside the fuel cell.
  • the fuel cell device comprises a device for diverting the medium mixture contained in the space and having the flushing medium, the device being connected to the interior of the housing and to an exhaust pipe leading away from the cathode space.
  • the device is designed so that when diverting the medium mixture from the space of the housing, the space and thus also the medium mixture is fluidly coupled to the exhaust gas flowing in the exhaust pipe.
  • a component can be provided by means of which flushing can be carried out more easily and without a quasi-actively operating component, such as a fan, and in addition it can also be achieved that undesired medium mixtures, in particular undesired hydrogen-air mixtures, are produced. Mixtures in which space is created.
  • the device is thus, so to speak, a passive unit, whereby a higher reliability can be achieved compared to actively operating units.
  • the device is thus designed so that it uses fluidic relationships to allow the discharge or the suction of the medium contained in the medium mixture.
  • An active component for example a fan, can therefore be completely dispensed with in order to divert this mixed medium from the housing.
  • the flushing medium is preferably fresh air introduced from the environment.
  • the device is designed so that the exhaust gas flow is a propulsion jet through whose streams the medium mixture is automatically sucked out of the room.
  • the device is designed as a pump, preferably as a jet pump.
  • a jet pump enables the particularly effective implementation of the fluidic relationships with regard to the automatic suction of the medium mixture from the room in conjunction with the flowing exhaust gas flow.
  • the device in particular the jet pump, preferably has a constriction with a flow cross section which is reduced in comparison to the flow cross section before and after the constriction.
  • the device is thus designed with regard to its bottleneck - that widens the flow cross section before the bottleneck and also after the bottleneck respectively. In terms of flow, this can also ensure a nozzle effect, for example as with a Laval nozzle.
  • the device has a line which opens into the space, which branches off from this constriction.
  • the opening into the space opening of the line is oriented to the side.
  • the line can quasi side, in particular horizontally, open into the room. It can also be provided that the opening into the space opening of the line is oriented upward and the line extends in particular vertically upwards (with respect to the direction of gravity).
  • the upwardly settling in the housing fuel, especially hydrogen or hydrogen-containing gas can be particularly suitably sucked and thus the housing can be flushed particularly effective.
  • the device discharges the medium mixture out of the space, in particular the line of this device, above (with respect to the direction of gravity) of the fuel cell in the room.
  • This embodiment also allows the aspect to be taken into account that the fuel settles upwards in the space and thus the upwardly depositing fuel emerging from the fuel cell, for example due to leakages, can be flushed out particularly well.
  • the housing has an opening for supplying the flushing medium, which is formed below (with respect to the direction of gravity) of the fuel cell.
  • the rinsing effect can be favored, as quasi by the inflow from below or at a level below the fuel cell, the fuel can be driven upwards and there accordingly flushed or derived from the housing.
  • the housing has an opening for supplying the flushing medium, which is formed above (with respect to the direction of gravity) of the fuel cell.
  • the opening can advantageously be closed by a closure element, wherein the closure element is in particular electronically controllable.
  • the closure element is in particular electronically controllable.
  • This concentration of the fuel can preferably be determined by means of a device for detecting this concentration, in particular a suitable sensor system.
  • This sensor is preferably arranged in the housing outside of the fuel cell. In particular, this sensor is located from the height level above (with respect to the direction of gravity) of the fuel cell, preferably adjacent to the upper cover of the housing.
  • the device is in particular arranged completely in the housing. As a result, a compact design can be achieved.
  • a bypass line for bypassing this device is formed, which branches off from the exhaust pipe of the cathode chamber.
  • a bypass configuration can be achieved, which makes it possible that the exhaust gas flow is diverted according to the situation and demand.
  • the required for the realization of the fluidic principle proportion of exhaust gas flow can thus be metered very precisely.
  • the entire exhaust gas flow can be conducted via the device and, on the other hand, it can also be made possible that only a partial flow is passed through the device or the entire exhaust gas flow is conducted via the bypass line.
  • the portions of the exhaust gas stream flowing through the device for discharging the medium mixture and via the bypass line are adjustable.
  • these are Components of the exhaust gas flow depending on a concentration of fuel in the space of the housing adjustable.
  • the fuel cell device has an adjusting element which can change the flow cross sections of the exhaust gas line with the device on the one hand and the flow cross sections of the bypass line on the other hand.
  • this adjustment is electronically controlled and the position can be changed accordingly. This can also be done in particular as a function of the concentration of the fuel in the space in which the medium mixture is located.
  • the adjusting element is arranged at the branch between the exhaust pipe and the bypass line.
  • the fuel cell device has a catalyst, through which the medium mixture derived from the space can be conducted.
  • the catalyst is disposed in the conduit extending between the space and the throat of the device for discharging the mixed medium.
  • the catalyst can also be arranged at a different location on the way between the housing and the environment, whereby the medium mixture is passed over this way.
  • a flushing medium for flushing a space of the housing is introduced into the housing outside the fuel cell.
  • a flowing in an exhaust pipe of the cathode space exhaust stream is fluidly through a device so with the Coupled space that the medium contained in the space and having the flushing medium aspirated from the room, in particular is automatically sucked.
  • the device for discharging the mixed medium from the space is released depending on a concentration of fuel in the space for aspirating the medium mixture.
  • this device is not permanently active, but is used and used only in specific required operating phases accordingly.
  • the space of the housing is flushed with the medium mixture with fresh air.
  • the device for deriving the medium mixture in particular a jet pump
  • no "active" but a “passive” component or concept is used, which causes increased reliability.
  • the use of the advantageous jet pump requires only a minimum of additional weight and space compared to a system without ventilation of the housing and a considerable less effort in terms of space and weight compared to a system with auxiliary fan and drive motor.
  • By not having to permanently drive a fan such a jet pump system is more efficient in terms of energy and thus has an increased efficiency over systems known in the art.
  • the resulting by the jet pump larger pressure drop, which occurs due to the required higher pumping power, can be countered that the exhaust air flow or exhaust gas bypasses the jet pump through the bypass line and so the way of a very low pressure drop in the exhaust air path is selected.
  • the adjusting element, in particular a flap, is in this case then set if necessary so that the exhaust gas flow is passed through the jet pump and the medium mixture, in particular the gas mixture, sucks from the housing.
  • Fuel cell device is designed so that the exhaust gas flow generated in the cathode compartment and the exhaust gas flow generated in the anode compartment are passed through the jet pump and advantageously used catalyst element need not necessarily be arranged in the connecting the space with the medium mixture with the device for discharging the medium mixture suction line, but also somewhere else in the region of the exhaust air line in which the exhaust air of the cathode, the purged fuel of the anode and the intercepted leaks are passed together via such a catalyst element.
  • FIG. 1 shows a first embodiment of a BrennstoffZellen setup invention
  • FIG. 2 shows a second embodiment of a fuel cell device according to the invention
  • FIG. 3 shows a third embodiment of a fuel cell device according to the invention
  • 4 shows a fourth exemplary embodiment of a fuel cell device according to the invention
  • 5 shows a fifth embodiment of a fuel cell device according to the invention
  • 6 shows a sixth embodiment of a fuel cell device according to the invention
  • FIG. 7 shows a seventh exemplary embodiment of a fuel cell device according to the invention.
  • a fuel cell device 1 which is designed as a mobile fuel cell system and arranged in a vehicle.
  • Fuel cell device 1 comprises a fuel cell 2, which has a cathode space 3 and an anode space 4.
  • the cathode compartment 3 and the anode compartment 4 are separated from each other by a PEM (proton exchange membrane) 5.
  • the fuel cell 2 is formed in the embodiment as a PEM fuel cell.
  • the fuel cell device 1 comprises a fuel cell stack with preferably a plurality of fuel cells 2. In the exemplary embodiment, for the sake of clarity, only one fuel cell 2 is shown.
  • This fuel cell 2 is arranged in a housing 6, which protects the fuel cell 2 from dirt, external influences and damage.
  • the anode chamber 4 is supplied via an anode branch fuel, in particular hydrogen or a hydrogen-containing gas. This is in one Storage reservoir or container 8 is stored and is supplied via a feed line 9 to the anode compartment 4.
  • the anode exhaust gas can be completely or partially fed back to the anode via a return line and a recirculation device, for example a pump (not shown).
  • An anode exhaust gas generated during operation of the fuel cell 2 in the anode compartment 4 is discharged via an exhaust pipe 10 from the anode compartment 4 and in particular also discharged into the environment.
  • the fuel cell device 1 also comprises a cathode branch with a supply line 11 via which oxidizing agents, in particular oxygen or oxygen-containing gas, such as e.g. Ambient air is conveyed to the cathode compartment 3.
  • oxidizing agents in particular oxygen or oxygen-containing gas, such as e.g. Ambient air
  • an air filter 12 Downstream of the air filter 12, a compressor 13 is arranged, which is driven by a motor 14 and which promotes the oxidant via the supply line 11 to the cathode space 3.
  • the BrennstoffZellen Anlagen 1 and in particular the cathode branch comprises an exhaust pipe 15, via which the cathode exhaust gas generated in the cathode compartment 3 during operation of the fuel cell 2 is derived. This too is derived in the environment.
  • a recirculation device can be provided both on the cathode branch and on the anode branch, by means of which the exhaust gas of the cathode chamber 3 is fed back into the supply line 11 or the anode exhaust gas into the supply line 9.
  • the fuel cell device further comprises a device for discharging the medium formed in the space 7, which comprises the collected fuel and the flushing medium, out of the space 7.
  • the device is designed in the embodiment as a jet pump 16.
  • the jet pump 16 is provided with a sub-element in the exhaust pipe 15 arranged or connected thereto.
  • the jet pump 16 is designed as a passive component. Due to fluidic relationships can be achieved by a suitable design of the jet pump 16 that the medium contained in space 7 can be extracted automatically depending on demand and situation specific.
  • the jet pump 16 is on the one hand connected to the space 7 via a line 17 and on the other hand to the exhaust pipe 15.
  • the effluent from the cathode chamber 3 exhaust gas or the effluent exhaust gas stream flows through the exhaust pipe 15 and thus also through the jet pump 16.
  • the device or jet pump 16 comprises an element 18 which has a constriction 19.
  • the element 18 is designed so that it is formed in an axial direction and thus in its longitudinal direction and in this context also in the longitudinal direction of the exhaust pipe 15 with a varying flow cross-section.
  • the constriction 19 has a flow cross section which is smaller than the flow cross section before and after this constriction 19.
  • the element 18 of the jet pump 16 is thus formed before and after the constriction 19 with a respective expanded flow cross section, whereby a Principle according to a Laval nozzle can be realized.
  • the line 17 opens, see. Entry 20.
  • the conduit 17 branches off from a location of the housing 6 which, with regard to the observation of the height level (y-direction) above (with respect to the direction of gravity) of Fuel cell 2 is located. This is advantageous because the fuel flowing out of the fuel cell 2 rises upwards in the space 7 (positive y-axis). Direction) settles.
  • the line 17 is oriented so that it emerges quasi horizontally from the housing 6 whereby the opening 21 is quasi-side oriented and thus a lateral suction from the space 7 takes place.
  • the jet pump 16 is thus arranged downstream of the fuel cell 2 and connected to the space 7 and to the exhaust pipe 15.
  • fresh air 22 is introduced via an opening 23 in the housing 6 from the outside or from the environment.
  • the opening 23 is formed on an underside or on a bottom of the housing 6 and thus realized with respect to the height level below (with respect to the direction of gravity) of the fuel cell 2.
  • the jet pump 16 is arranged outside the housing 6. Moreover, in the embodiment of the fuel cell device 1 shown in FIG. 1, a permanent flushing of the housing 6 is realized. In addition, the medium mixture formed in space 7 is permanently sucked by the jet pump 16 and permanently.
  • a catalyst 24 is provided, through which the medium mixture extracted from the space 7 is passed.
  • the catalyst 24 in the conduit 17 which connects the space 7 and the housing 6 with the element 18 of the jet pump 16, respectively.
  • the hydrogen contained in the fuel-oxidizer mixture or hydrogen-air mixture reacts, so that no or only a very small proportion of hydrogen can get into the environment.
  • this catalyst 24 may also be arranged at another point of the flow path of the medium mixture.
  • Fig. 3 a further embodiment is shown, which is realized in contrast to the illustration of FIG. 1 to the effect that the jet pump 16 is arranged in the housing 6.
  • the conduit 17 extends vertically upward (with respect to the direction of gravity) so that the opening 21 is oriented upwardly.
  • This opening 21 is thus located in the upper region of the housing 6, ie where potentially hydrogen accumulates. As a result, the hydrogen accumulated there can be sucked off particularly effectively.
  • an additional bypass line 25 is provided.
  • the bypass line 25 branches off at the branch 26 upstream of the jet pump 16 from the exhaust gas line 15.
  • the jet pump 16 can be bypassed.
  • the exhaust gas stream flowing in the exhaust gas line 15 can thus be at least partially directed as needed.
  • an adjusting element which is designed as a flap 27 in the embodiment, is electronically controlled adjustable.
  • the flap 27 is arranged in the embodiment directly to the branch 26 and can be adjusted by a servomotor 28. The adjustment can be done continuously. It is preferably provided that the portions of the exhaust gas flow are derived in accordance with a concentration of the fuel in the space 7 accordingly.
  • the configuration with the bypass line 25 has the advantage that during the predominant operating time of the fuel cell device 1, the effluent from the cathode compartment 3 exhaust gas flow along the path of the lower flow resistance can be performed, which is realized by the discharge via the bypass line 25.
  • This is the more effective process in terms of compressor performance.
  • intermittent actuation of the flap 27, the exhaust gas stream from the cathode side or the cathode chamber 3 can be repeatedly led over the primary exhaust gas line 15a and thus also via the jet pump 16, so that the medium mixture is sucked out of the chamber 7 or drawn in can be.
  • the jet pump 16 and also the bypass 25 and the branch 26 are arranged outside the housing 6.
  • a further embodiment is shown, in which, in contrast to the illustration of FIG. 4, the branch 26 and the jet pump 16 and a part of the bypass line 25 are disposed within the housing 6.
  • a control unit 29 is shown in Fig. 5, which is electronically connected to the servo motor 28 and with a device for detecting the concentration of the fuel in the space 7, in particular the sensor 30, signal or data leading.
  • the flap 27 can be adjusted depending on demand by the activatable by the control and / or regulating unit 29 servomotor 28.
  • a signal is sent to the control unit. and / or control unit 29.
  • This unit 29 processes the signal and then actuates the flap 27 by means of which the path of the exhaust gas stream from the cathode chamber 3 via the jet pump 16 and thus via the exhaust pipe 15a predetermined and thereby the medium mixture from the space 7 of the housing. 6 can be sucked off.
  • the actuation of the flap 27 and thus the path of the exhaust gas flow of the cathode chamber 3 is thus regulated as a function of the hydrogen concentration in the space 7.
  • the control of the flap 27 can also be controlled or regulated by other or further parameters.
  • the air mass flow and the compressor speed of the compressor 13 may be mentioned.
  • the inflow of fresh air 22 takes place here via the attached opening 23 in the bottom of the housing.
  • Fig. 6 another embodiment is shown in which no opening 23 is formed in the bottom of the housing 6, but an opening 31 at a lateral location of the housing 6, which in terms of height level above (with respect to the direction of gravity ) of the fuel cell 2 is arranged.
  • the opening 31 can be closed by means of a closure element 32, wherein the closure element 32 can be controlled by means of the control and / or regulating unit 29.
  • the closure element 32 can be actuated magnetically.
  • a signal or data-conducting connection is realized by means of a signal line, as in the signal or data-conducting connection to the sensor 30 and the servomotor 28.
  • FIG. 7 an embodiment of the fuel cell device 1 is shown, in which, in contrast to the embodiment in Fig. 6, the closure element 32 is shown in the open state.
  • the flap 27 is shown in a state in which the bypass line 25 is completely closed and the exhaust gas flow emerging from the cathode chamber 3 is conducted completely via the exhaust gas line 15a and thus also via the jet pump 16.

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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 un système de piles à combustible comprenant au moins une pile à combustible (2), qui présente une chambre anodique (4) et une chambre cathodique (3) et est disposée dans un boîtier (6). Un milieu de nettoyage pour nettoyer le boîtier (6) peut être introduit dans un compartiment (7) en dehors de la pile à combustible (2). Selon l'invention, il est prévu un dispositif (16, 17, 18, 19) pour évacuer le mélange de milieux contenu dans le compartiment (7) et présentant le milieu de nettoyage, ledit dispositif étant raccordé au compartiment (7) et à une conduite de gaz brûlés (15, 15a) partant de la chambre cathodique (3). Ledit dispositif est conçu de sorte que l'évacuation du mélange de milieux soit couplée selon la technique des fluides au flux de gaz brûlés s'écoulant dans la conduite de gaz brûlés (15, 15a). L'invention concerne également un procédé pour faire fonctionner un système de piles à combustible de ce type.
EP09727278A 2008-04-01 2009-03-31 Système de piles à combustible et procédé d'exploitation d'un système de piles à combustible Withdrawn EP2258018A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008016579A DE102008016579A1 (de) 2008-04-01 2008-04-01 Brennstoffzelleneinrichtung und Verfahren zum Betreiben einer Brennstoffzelleneinrichtung
PCT/EP2009/002338 WO2009121560A1 (fr) 2008-04-01 2009-03-31 Système de piles à combustible et procédé d'exploitation d'un système de piles à combustible

Publications (1)

Publication Number Publication Date
EP2258018A1 true EP2258018A1 (fr) 2010-12-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09727278A Withdrawn EP2258018A1 (fr) 2008-04-01 2009-03-31 Système de piles à combustible et procédé d'exploitation d'un système de piles à combustible

Country Status (6)

Country Link
US (1) US20110045369A1 (fr)
EP (1) EP2258018A1 (fr)
JP (1) JP2011517020A (fr)
CN (1) CN101981746A (fr)
DE (1) DE102008016579A1 (fr)
WO (1) WO2009121560A1 (fr)

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AT507763B1 (de) 2008-12-30 2010-12-15 Fronius Int Gmbh Verfahren und vorrichtung zum austragen verbrauchter und zum teil explosionsfähiger betriebsmedien einer brennstoffzelle
DE102010023671A1 (de) * 2010-06-12 2011-12-15 Daimler Ag Brennstoffzellensystem mit einer in einem Gehäuse angeordneten Brennstoffzelle
JP5589623B2 (ja) * 2010-07-08 2014-09-17 トヨタ自動車株式会社 燃料電池搭載車両
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WO2009121560A1 (fr) 2009-10-08

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