EP4078706A1 - Dispositif de détection pour système d'éléments à combustible - Google Patents

Dispositif de détection pour système d'éléments à combustible

Info

Publication number
EP4078706A1
EP4078706A1 EP20829191.4A EP20829191A EP4078706A1 EP 4078706 A1 EP4078706 A1 EP 4078706A1 EP 20829191 A EP20829191 A EP 20829191A EP 4078706 A1 EP4078706 A1 EP 4078706A1
Authority
EP
European Patent Office
Prior art keywords
section
flow channel
anode
fuel cell
sensor device
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.)
Pending
Application number
EP20829191.4A
Other languages
German (de)
English (en)
Inventor
Ulla-Valentina KRUSCH
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.)
AVL List GmbH
Original Assignee
AVL List 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 AVL List GmbH filed Critical AVL List GmbH
Publication of EP4078706A1 publication Critical patent/EP4078706A1/fr
Pending 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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04231—Purging of the reactants
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/406—Cells and probes with solid electrolytes
    • G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
    • 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
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the 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
    • H01M8/04313—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
    • H01M8/04313—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
    • H01M8/04537—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
    • H01M8/04544—Voltage
    • H01M8/04567—Voltage of auxiliary devices, e.g. batteries, capacitors
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings 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
    • H01M8/04—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
    • 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 present invention relates to a sensor device for a fuel cell system, a fuel cell system with such a sensor and a method for controlling a flushing process of a fuel cell system.
  • fuel cells recirculate fuel during operation.
  • the fuel is, for example, hydrogen, which is fed to an anode side of the fuel cell and is chemically converted there.
  • a remainder of the fuel remains in the anode exhaust gas after the anode.
  • the disadvantage of the known solutions is that the recirculation described above can cause contamination in the anode feed section and thus in the anode of the fuel cell stack. Diffusion processes make it possible for nitrogen to get into the anode exhaust gas and to be fed back to the anode feed section as a result of the recirculation and also to accumulate as a result. Water or water vapor can also be found in an anode exhaust gas, which is also fed in liquid form as drops through the recirculation to the anode feed section and can also block paths in the hydrogen path there. Furthermore, damage mechanisms can lead to the formation of small amounts of carbon monoxide and carbon dioxide on the anode side.
  • a flushing process is therefore carried out in the known fuel cell systems.
  • Purge processes are short-term letting out or rinsing of the anode feed section, while a bleed process means long-term letting out or rinsing with low volume flows.
  • the point in time of the flushing process is either initiated when the individual cells of the fuel cell stack fall below a certain cell voltage, or it is determined algorithmically on the basis of a simulation model. It is thus simulated over which operating time and under which operating conditions which impurities arise in the anode feed section. The rinsing process is then carried out on the basis of this simulation result. In order to avoid accumulating simulation errors, a larger number of flushing processes is carried out to be on the safe side. On the one hand, this is disadvantageous because it restricts the operation of the fuel cell. Another disadvantage is anode feed gas that is lost in this way, that is, lost fuel that is no longer available for generating electricity.
  • a sensor device for a fuel cell system for determining a flushing parameter for controlling a flushing process of the fuel cell system.
  • the sensor device has a first flow channel for an arrangement in an anode feed section of an anode section of a fuel cell stack.
  • the sensor device is equipped with a second flow channel for an arrangement in a recirculation section of the anode section of the fuel cell stack.
  • the first flow channel and the second flow channel are separated from one another at least in sections by means of a gas-tight membrane. This membrane is made permeable to protons and equipped with an electrode section on both sides.
  • the sensor device also has a measuring device for determining a difference in concentration of fuel, in particular of hydrogen, between the first flow channel and the second flow channel as a flushing parameter based on an electrical voltage between the two electrodes.
  • a sensor device is now designed to carry out an integral determination of the difference in concentration of fuel between the two flow channels and thus between the anode feed section and the recirculation section.
  • concentration in the anode feed section is basically known, since this is the feed of the fuel.
  • the hydrogen concentration in the recirculation section depends on the level of contamination.
  • the impurities add up over the operation of the fuel cell, so that the proportion of the impurity increases, as a result of which the proportion of hydrogen in the recirculation section decreases.
  • the difference in concentration means that the protons and electrons formed from the hydrogen, in particular on a catalyst layer, are moved in the first flow channel through the membrane, which is permeable to protons, and electrodes that are conductive for the electrons, in order to produce a chemical concentration compensation to the second flow channel.
  • an electrical po- potential generated between the electrode section in the first flow channel and the electrode section in the second flow channel can be tapped via the measuring device between the electrode sections and define a flushing parameter as electrical voltage.
  • the measured electrical voltage between the two electrodes can be used directly as a rinsing parameter. However, further processing of this specific voltage value can also take place in order to allow a conclusion to be drawn about the difference in concentration and, in particular, about a determination of the actual concentration of hydrogen in the second flow channel.
  • the sensor device can therefore be integrated into the fuel cell system. It is thus possible to monitor the concentration differences between the first flow channel and the second flow channel integrally within the fuel cell system and in particular in a continuous or essentially continuous manner.
  • a quantitative determination or at least a quantitative approximation of the hydrogen concentration in the recirculation section can even take place on the basis of a known concentration in the anode feed section.
  • a simulation model no longer has to be used to start the flushing processes. It is much more possible to determine the hydrogen concentration and thus also to draw conclusions about the degree of contamination in the recirculation section. The degree of contamination can now be used as a control parameter to trigger a flushing process.
  • the respective flow channels are preferably designed with corresponding inlets and outlets in order to be integrated into the anode feed section and the recirculation section for fluid communication.
  • the first flow channel is formed gas-tight against the second flow channel.
  • the electrode sections cover the entire or essentially the entire membrane on both sides. This means that it is not possible to bypass protons next to the electrodes.
  • a simple production of the membrane can be made available in this way, since it can also be produced over a large area and then cut to size.
  • the first flow channel and the second flow channel are designed to be identical or essentially identical, in particular with regard to the flow conditions.
  • This is to be understood as meaning, for example, the same flow cross-sections as in the flow channels.
  • the same total volumes of the two flow channels can also be understood as an identical or essentially identical design.
  • wall surfaces which influence the flow in the two flow channels and the corresponding inlet and outlet cross-sections are identical or essentially identical. This leads to the fact that a simplified evaluation of the determined concentration differences or the specific electrical voltage is possible by means of the measuring device.
  • the first flow channel and / or the second flow channel have at least one adjusting device for checking the flow conditions in the respective flow channel.
  • an adjusting device can be designed, for example, as a valve or as a pump and results in the flow conditions being matched to one another on both sides.
  • the flow conditions in the two flow channels can now be actively adapted.
  • the adjusting device can be used to adjust the flow conditions in the sensor device. Even if, with different load conditions or load requirements on the fuel cell system, different flow conditions arise due to different feed speeds or feed mass flows in the anode feed section, the corresponding adjustment device in the second flow channel can again make it possible to adjust the flow conditions.
  • the at least one adjusting device has at least one of the following modules:
  • Pressure module for varying the gas pressure in the respective flow channel
  • Mass flow module for varying the mass flow in the respective
  • a pressure module or a mass flow module can be understood to mean, for example, pump devices, pressure regulating devices or control valves. This makes it possible to influence the gas pressure and / or the mass flow, but preferably both, in the respective flow channel and to adapt it to the corresponding conditions in the other flow channel. Such adjusting devices are preferably provided for both flow channels. hen in order to provide greater flexibility in the variation of the flow conditions and in the possibility of matching.
  • the membrane has a catalyst layer on at least one side, in particular on both sides, preferably on the respective electrode section, for an oxidation of gas constituents, in particular hydrogen.
  • This oxidation is to be understood as a chemical oxidation so that protons and electrons are generated from hydrogen, for example.
  • the catalytic conversion by chemical oxidation of gas components leads to the fact that even further improved conditions for the formation of an electrical voltage are made available through a chemical potential between the two flow channels.
  • the catalyst layers are formed identically or essentially identically on both electrode sections.
  • the membrane is designed to be electrically insulating. This can be made available by appropriate material configurations of the membrane. However, it is basically also conceivable that the membrane provides the electrical insulation via a layer or a corresponding connection to walls or a housing. It is particularly preferred if the membrane has a corresponding electrically insulating contact to one or even to both electrode sections.
  • the first flow channel and the second flow channel are guided in cocurrent along the membrane. This leads to the fact that otherwise possibly existing shifts in concentration are avoided by countercurrent and also an undesired variation due to temperature differences within the two flow channels is reduced.
  • the present invention also relates to a fuel cell system, comprising at least one fuel cell stack with an anode section and a cathode section, an anode feed section for feeding anode feed gas to the anode section, a cathode feed section for feeding cathode feed gas to the cathode section, an anode discharge section for discharging at least part of the anode off-gas, a cathode discharge section for discharging cathode off-gas, a recirculation section for returning at least a part of the anode off-gas to the anode off-gas.
  • a sensor device according to the present invention is provided.
  • the anode feed section has the first flow channel of the sensor device and the recirculation section has the second flow channel of the sensor device.
  • a fuel cell system according to the invention brings the same advantages as they have been explained in detail with reference to a sensor device according to the invention.
  • the fuel cell system can also have other features.
  • a reformer device can be arranged upstream of the sensor section, which converts the reformer feed gas that has been fed into a reformed anode feed gas.
  • Further components, such as heat exchangers, afterburner or even rod burner devices, can also be used in such a fuel cell system within the scope of the present invention.
  • a mixing section is arranged downstream of the flow direction of the recirculated anode exhaust gas for introducing the recirculated anode exhaust gas into the anode feed section.
  • mixing of the recirculation gas and the anode feed gas is carried out in the mixing section.
  • a simple and inexpensive mixing and combination of these two gases can thus be possible.
  • the mixing takes place after the flushing parameter has been determined according to the invention.
  • a separate line to the anode section from the second flow channel would in principle also be conceivable within the scope of the present invention.
  • the mixing section in the anode feed section is arranged downstream of the first flow channel in the direction of flow of the anode feed gas. This means that mixing with the recirculation gas takes place only after the anode feed gas has flowed through the first flow channel. The influence of the recirculation gas and thus the resulting mixed concentration therefore only takes place when the first flow channel has already been passed. This means that an exact composition can be determined for the recirculation gas in particular if the pure anode feed gas is known and this also flows in pure form through the first flow channel. Undesired cross influences and deviations that build up over time are avoided in this way for the first flow channel.
  • the mixing section in the anode feed section precedes the first flow channel in the flow direction of the anode feed gas. This does not allow the pure gas component of the anode feed gas, but rather the mixture that has already been set to be compared with the recirculation gas. This is particularly advantageous when not only one sensor device but two sensor devices are provided. It has great advantages if a first sensor device is arranged in front of the mixing section and a second sensor device is arranged after the mixing section, so that it is possible to compare both the pure anode feed gas and the mixed anode feed gas via chemical potential detection and corresponding flushing parameters To make available.
  • the present invention also relates to a method for checking a fuel cell system according to the invention, comprising the following steps:
  • a method according to the invention thus has the same advantages as explained in detail with reference to a fuel cell system according to the invention have been.
  • a rinsing process can be a purge process or a bleed process. It is also conceivable that the rinsing parameter or the degree of deviation from the default value decides whether a purge process or a bleed process should be carried out.
  • a secondary parameter in particular in the form of a nitrogen concentration in the second flow channel, is determined on the basis of the flushing parameter.
  • the secondary parameter can thus generate the exact percentage of pollution, especially in the form of nitrogen, as the difference, without the nitrogen or nitrogen content having to be determined directly.
  • the secondary parameter can be used alone, but also combined with the flushing parameter, for the comparison value in order to control the flushing process.
  • FIG. 1 shows an embodiment of a sensor device according to the invention
  • Fig. 2 shows a further embodiment of a sensor device according to the invention
  • Fig. 3 shows an embodiment of a fuel cell system according to the invention
  • Fig. 5 shows another embodiment of a fuel cell system according to the invention
  • FIG. 6 shows a schematic representation of the method according to the invention.
  • the basic structure of a sensor device according to the invention is shown schematically.
  • the sensor device has two individual cells, which are characterized by a first flow channel 20 and a second flow channel 30.
  • the first flow channel 20 is part of an anode feed section 122 and the second flow channel 30 is part of a recirculation section 126.
  • Pure anode feed gas for example pure hydrogen
  • Pure anode feed gas preferably flows through the first flow channel 20.
  • Recirculation gas contaminated by the anode exhaust gas is passed through the second flow channel 30, so that a chemical concentration difference between hydrogen in the first flow channel 20 and in the second flow channel 30 is established.
  • the two flow channels 20 and 30 are separated by a gas-tight membrane 40, as shown in FIG. Protons can penetrate this membrane 40, however, so that a chemical concentration difference leads to an electrically measurable voltage between the first flow channel 20 and the second flow channel 30.
  • This voltage is tapped via the electrode sections 42 and 44 arranged on both sides of the membrane 40 and can be detected on the measuring device 50.
  • the detected concentration difference or the measured voltage value can now be output as the flushing parameter SP.
  • the first flow channel 20 and the second flow channel 30 are guided in cocurrent here.
  • FIG. 2 is a further development of a sensor device according to the invention. This is basically based on the solution in FIG. 1. However, adjusting devices 60 are additionally provided here, which are formed from pumping devices. It is thus possible to vary the flow conditions in the first flow channel 20 and in the second flow channel 30. In particular with different load requirements, but also with different recirculation quantities, an adjustment of the flow ratio in the respective other flow channel 20 or 30 can take place in this way, so that an adjustment and in particular an equalization of the flow conditions between the two flow channels 20 and 30 is possible.
  • Figure 3 shows the integration of a sensor device 10 according to the invention in a fuel cell system 100 according to the invention.
  • a fuel cell stack 110 with an anode section 120 and a cathode section 130 shown.
  • the anode section 120 is provided with an anode feed section for feeding anode feed gas and an anode discharge section 124 for discharging anode exhaust gas.
  • the cathode section 130 is designed with a cathode feed section 132 for feeding in cathode feed gas and a cathode discharge section 134 for discharging cathode exhaust gas.
  • FIG. 3 now shows how a sensor device 10 is integrated into the anode feed section 122 and the recirculation section 126.
  • the recirculated anode exhaust gas through the recirculation section 126 is fed into the second flow channel 30 and is there at a concentration difference to the anode feed gas of the first flow channel 20.
  • the recirculation gas can also be fed downstream of the sensor device 10. This enables the integral determination of the differences in concentration so that a purge or bleed process can be carried out precisely.
  • FIG. 4 shows a further development of the embodiment of FIG. 1.
  • control valves or control valves are provided as adjusting devices 60 in this embodiment in order to adjust the flow conditions in the first flow channel 20 and in the second flow channel 30 to one another.
  • a mixing section 140 is also provided, which allows the recirculation gas to be mixed with the pure feed gas in a targeted manner.
  • the mixing section 140 can of course also be located downstream of the second flow channel 20 in the anode feed section 122.
  • FIG. 5 shows an embodiment with a further improvement of the fuel cell system 100.
  • two sensor devices 10 are provided here, which carry out their determination at two different points with respect to the mixing section 140.
  • the left sensor device 10 is able to determine the difference in concentration between the pure anode feed gas and the recirculation gas.
  • the right sensor device 10 allows a determination between the recirculation gas and the already mixed anode feed gas. With that, a even more precise integral determination and thus an even more precise control of the purge and / or bleed processes can be made available.
  • FIG. 6 shows schematically how a method according to the invention can be carried out.
  • a hundred percent hydrogen concentration H2 is preferably present in the first flow channel 20.
  • the second flow channel 30 there is contamination by a residue, for example by water vapor and / or by nitrogen and / or by carbon monoxide and / or carbon dioxide, so that the hydrogen concentration H2 is lower than in the first flow channel 20.
  • the hydrogen concentration can now can be determined as the flushing parameter SP.
  • a secondary parameter SP for the remainder for example a nitrogen concentration.
  • This can also be compared with a default value VW which, according to FIG. 6, is too large in this example, so that there is too much contamination and a flushing process is also necessary.
  • these two comparison steps can also be combined with one another in a method according to the invention.
  • sensor device 20 first flow channel 30 second flow channel 40 membrane 42 electrode section 44 electrode section 50 measuring device 60 adjusting device
  • fuel cell system 110 fuel cell stack 120 anode section 122 anode feed section 124 anode discharge section 126 recirculation section 130 cathode section 132 cathode feed section 134 cathode discharge section 140 mixing section

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Abstract

L'invention concerne un dispositif de détection (10) destiné à un système (100) d'éléments à combustible et permettant de déterminer un paramètre de purge (SP) servant à commander un traitement de purge du système (100) d'éléments à combustible, le dispositif comprenant un premier canal d'écoulement (20) destiné à être disposé dans une section d'apport (122) d'une section anode (120) d'un empilement d'éléments à combustible (110), et un second canal d'écoulement (130) destiné à être disposé dans une section de recirculation (126) de la section anode (120) de l'empilement d'éléments à combustible (110), séparés entre eux au moins en sections au moyen d'une membrane étanche aux gaz (40), la membrane (40) étant conçue pour être perméable aux protons et comportant une section d'électrode (42, 44) des deux côtés ; et comprenant un dispositif de mesure (50) permettant de déterminer une différence de concentration du combustible entre le premier canal d'écoulement (20) et le second canal d'écoulement (30), en tant que paramètre de purge (SP), en fonction d'une tension électrique entre les deux sections d'électrode (42, 44).
EP20829191.4A 2019-12-18 2020-12-18 Dispositif de détection pour système d'éléments à combustible Pending EP4078706A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA51114/2019A AT523373B1 (de) 2019-12-18 2019-12-18 Sensorvorrichtung für ein Brennstoffzellensystem
PCT/AT2020/060482 WO2021119714A1 (fr) 2019-12-18 2020-12-18 Dispositif de détection pour système d'éléments à combustible

Publications (1)

Publication Number Publication Date
EP4078706A1 true EP4078706A1 (fr) 2022-10-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20829191.4A Pending EP4078706A1 (fr) 2019-12-18 2020-12-18 Dispositif de détection pour système d'éléments à combustible

Country Status (5)

Country Link
US (1) US20230022392A1 (fr)
EP (1) EP4078706A1 (fr)
CN (1) CN114762155A (fr)
AT (1) AT523373B1 (fr)
WO (1) WO2021119714A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT526461B1 (de) 2022-08-19 2024-08-15 Avl List Gmbh Konzentrationsmessvorrichtung und Verwendung derselben in einem Brennstoffzellensystem
AT526143B1 (de) 2022-08-19 2023-12-15 Avl List Gmbh Strömungsmessvorrichtung und Verwendung derselben in einem Brennstoffzellensystem

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EP3133686B1 (fr) * 2003-07-25 2018-03-14 Nissan Motor Co., Ltd. Procédé pour commander un système de pile à combustible et système de pile à combustible
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AT523373B1 (de) 2021-10-15
US20230022392A1 (en) 2023-01-26
CN114762155A (zh) 2022-07-15
AT523373A1 (de) 2021-07-15
WO2021119714A1 (fr) 2021-06-24

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