EP4616461A2 - Procédé pour déterminer l'humidité d'un flux de gaz au niveau d'un point de mesure d'un système de pile à combustible, système de pile à combustible, véhicule, programme informatique et support lisible par ordinateur - Google Patents

Procédé pour déterminer l'humidité d'un flux de gaz au niveau d'un point de mesure d'un système de pile à combustible, système de pile à combustible, véhicule, programme informatique et support lisible par ordinateur

Info

Publication number
EP4616461A2
EP4616461A2 EP23800798.3A EP23800798A EP4616461A2 EP 4616461 A2 EP4616461 A2 EP 4616461A2 EP 23800798 A EP23800798 A EP 23800798A EP 4616461 A2 EP4616461 A2 EP 4616461A2
Authority
EP
European Patent Office
Prior art keywords
gas flow
fuel cell
measuring point
reference point
cell system
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
EP23800798.3A
Other languages
German (de)
English (en)
Inventor
Stephan Heinrich
Thorsten Knittel
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP4616461A2 publication Critical patent/EP4616461A2/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
    • H01M8/04082—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
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
    • H01M8/04179—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal by purging or increasing flow or pressure of 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
    • H01M8/04082—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
    • 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
    • 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
    • H01M8/04492—Humidity; Ambient humidity; Water content
    • H01M8/045—Humidity; Ambient humidity; Water content 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
    • H01M8/04492—Humidity; Ambient humidity; Water content
    • H01M8/04514—Humidity; Ambient humidity; Water content 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
    • H01M8/04694—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
    • H01M8/04828—Humidity; Water content
    • H01M8/04835—Humidity; Water content 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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • 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
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04126—Humidifying
    • 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 method for determining a humidity of a gas flow at a measuring point of a fuel cell system, a fuel cell system, a vehicle, a computer program and a computer-readable medium.
  • nitrogen can accumulate at the anode of the fuel cell stack. This accumulation disrupts the reaction of hydrogen with oxygen, resulting in a loss of efficiency in the fuel cell.
  • Another aspect that affects the efficiency of the fuel cell is the moisture content of the proton exchange membrane of the fuel cell system. This is in a range of 70% to 80% relative humidity. To achieve these operating conditions, the air on the cathode side is humidified in order to operate the fuel cell at optimum efficiency. However, too high a humidity in the gas flow can hinder gas diffusion. Moisture that is created when hydrogen reacts with oxygen can be an additional disruptive factor that further increases the humidity of the gas flow. The effects that occur are difficult to predict.
  • the publication CN 112490473 A discloses a moisture management system.
  • the publication CN 113346110 A discloses a measuring device.
  • the publication CN 113540529 A discloses a measuring system.
  • a further object is to provide a fuel cell system or a vehicle with which such a method can be carried out.
  • a further object is to provide a computer program which in particular contributes to carrying out the method.
  • a further object is also to provide a computer-readable medium with the computer program. The object with regard to the method is achieved by a method having the features of claim 1.
  • An embodiment of the invention relates to a method for determining a humidity of a gas flow at a measuring point of a fuel cell system, wherein the fuel cell system comprises the measuring point and a reference point, wherein the measuring point and the reference point are selected such that the gas flow at the reference point and the measuring point has approximately the same ratio of hydrogen to nitrogen, wherein the reference point is selected such that the gas flow at the reference point has a known humidity, wherein the method comprises the steps of measuring the ratio of hydrogen to nitrogen of the gas flow at the measuring point by means of a first sensor, measuring the ratio of hydrogen to nitrogen of the gas flow at the reference point by means of a second sensor, and determining the humidity of the gas flow at the measuring point as a function of the difference between the ratios of hydrogen to nitrogen measured by means of the two sensors.
  • the humidity of the gas stream refers to the proportion of liquid vapor or water vapor in the gas stream.
  • Approximately equal, i.e. an approximately equal ratio of hydrogen to nitrogen, is preferably understood to mean a maximum deviation of 8%, 5%, 3% or 1% between the ratios of hydrogen to nitrogen at the two locations.
  • the gas stream is a gas stream mixture, which particularly preferably comprises hydrogen and/or nitrogen.
  • the gas flow is preferably understood to mean a gas volume flow or a gas volume flow.
  • the determination of the humidity of the gas flow at the measuring point as a function of the difference between the hydrogen to nitrogen ratios measured by the two sensors comprises a calculation, in particular based on the two measured hydrogen to nitrogen ratios.
  • a table, a characteristic map or a transfer function, which are preferably predetermined, is used for the determination. These can be determined mathematically or experimentally.
  • the first sensor is arranged at the measuring point and/or the second sensor is arranged at the reference point. In this way, a direct measurement is possible using the sensor or sensors at the respective point.
  • the measuring point is located at the anode of a fuel cell stack of a fuel cell system.
  • the known humidity is preferably understood to mean a constant value, such as 95%, or a range of values, such as 90% to 98%. Preferably, this is understood to mean a value with 100% or approximately 100% humidity.
  • the reference point is a point or position in the area of a water separator or on a water separator.
  • a water separator is preferably part of the fuel cell system and serves to remove moisture from the gas flow.
  • the water separator is preferably arranged in such a way that moisture can be removed from the gas flow by means of the water separator.
  • the second sensor is in front of, in particular immediately before or after, in particular immediately after, the water separator.
  • a preferred embodiment is characterized in that the ratio or ratios of hydrogen to nitrogen are the hydrogen-nitrogen ratio or the hydrogen-nitrogen ratio of the gas stream.
  • the difference between the ratios of hydrogen to nitrogen measured by the two sensors is formed by subtracting the measurement signals from the two sensors.
  • Each of the sensors generates a measurement signal that is representative and/or proportional to the ratio of hydrogen to nitrogen.
  • a further preferred embodiment is characterized in that the two sensors measure or determine the ratios of hydrogen to nitrogen based on the thermal properties of the gas flow.
  • the thermal properties are preferably the heat capacity or the thermal conductivity of the gas flow.
  • the sensors are the same sensors. Irrespective of this, it is advantageous if each of these sensors comprises a heater and a temperature sensor spaced apart from the heater. The gas of the gas flow is heated by means of the heater, whereby conclusions can be drawn about the gas composition or the gas ratio, in particular the ratio of hydrogen to nitrogen, based on the temperature increase measured by the temperature sensor, the temperature increase curve or the time elapsed until a certain temperature is reached.
  • both the first and the second sensor comprise a measuring chamber which is designed in such a way that the gas of the gas flow can penetrate into the measuring chamber, but the gas has no or a negligible flow velocity.
  • a negligible flow velocity is a flow velocity which does not or hardly affects the measurement of the respective sensor.
  • the sensors are designed and/or constructed in such a way that the same or the same flow velocity of the gas flow to be measured results at their heaters and temperature sensors. In this way, the influence of the flow velocity of the gas flow can be eliminated.
  • a further preferred embodiment is characterized in that the two sensors are calibrated in the same way. They are preferably calibrated in the same way and/or using the same gas, the same gas composition or the same ratio of hydrogen to nitrogen.
  • the same calibration ensures that the sensors deliver the same measurement signal at the same gas concentration. Therefore, the difference between the two measurement signals of the sensors can be used to determine the humidity of the gas flow at the measuring point, since the ratios of hydrogen to nitrogen are the same both at the measuring point and at the reference point, and the difference in the measurement signal at the measuring point differs from the measurement signal at the reference point only due to the difference in the humidity of the gas flow at this point compared to the other point.
  • the two sensors each deliver a measurement signal and are calibrated in the same way, and the difference between the measurement signal of the sensor at the measuring point and the measurement signal of the sensor at the reference point is caused only by the difference between the humidity of the gas flow at the reference point and the humidity of the gas flow at the measuring point.
  • both sensors are calibrated for the reference point and would in particular deliver the same measurement signal there. Therefore, the difference between the measurement signals is preferably based only on the difference between the humidity of the gas flow at the reference point and the measurement point, whereby depending on the The humidity of the gas flow at the measuring point is determined or can be determined by the difference in the measuring signal between the two measuring signals. This is possible even though these are gas concentration sensors and not humidity sensors.
  • the gas flow at the measuring point and the reference point has the same ratio of gases, but differs in its humidity at both points.
  • a further preferred embodiment is characterized in that the method further comprises the step of initiating a flushing process when the humidity of the gas flow at the measuring point exceeds a threshold value for the humidity of the gas flow.
  • This method step is preferably part of an evaluation, in particular an evaluation of the measured values of the two sensors.
  • an evaluation unit which is preferably implemented in a control unit. This is preferably a predetermined threshold value, whereby the threshold value is preferably a limit value.
  • the humidity of the gas flow is reduced because ambient air is supplied to the gas flow.
  • the ambient air can preferably be previously treated ambient air.
  • the treatment is preferably a tempering agent, a filtering or a water separation.
  • the method is preferably a method for initiating a play process for a fuel cell system.
  • the humidity of the gas flow is reduced.
  • the play process is only initialized when it is really necessary, i.e. when the humidity of the gas flow at the measuring point exceeds a predetermined threshold.
  • a further preferred embodiment is characterized in that the method further comprises the step of initiating a load-point-controlled or time-dependent flushing process if it is determined that at least one of the sensors is malfunctioning.
  • initialization of a flushing process is prevented in the event of a defect in one of the two sensors.
  • the time dependency of the purging process means in particular that a purging process is initiated after a certain, predetermined time at the latest, whereby this time period is selected in such a way that it is ensured that the humidity of the gas flow at the measuring point remains below the threshold value or another threshold value.
  • a further preferred embodiment is characterized in that the method further comprises the steps of carrying out a diagnosis of the two sensors by temporarily forming the gas flow using a moisture-free reference gas and during this time determining a malfunction of at least one of the two sensors as a function of a measurement signal difference between the two sensors.
  • the gas flow is preferably formed entirely by the reference gas. Both method steps are preferably carried out simultaneously.
  • the reference gas is preferably hydrogen, in particular pure hydrogen. It is preferred if these method steps are carried out before the fuel cell system is started.
  • a maximum measurement signal difference of 1.5%, 5.5%, 8.5% or 10% is permitted before a malfunction of at least one of the sensors is determined. This means that if the maximum values of the measurement signal difference are exceeded, a malfunction is determined.
  • the measurement signal difference is generated in particular by the difference between the two measurement signals generated by the two sensors.
  • the maximum values of the measurement signal difference from which a malfunction is detected are determined in particular by the difference in the ratios of hydrogen to nitrogen of the gas flow at the measuring point and the reference point that is to be expected and are therefore preferably higher.
  • the task with regard to the fuel cell system is solved by providing a fuel cell system with a control unit, a first and a second sensor as well as a measuring point and a reference point, wherein the first sensor is arranged at the measuring point and the second sensor at the reference point, wherein the measuring point and the reference point are selected such that a gas flowing past the measuring point and the reference point Gas flow at the reference point and the measuring point has the same ratio of hydrogen to nitrogen, wherein the reference point is selected such that the gas flow at the reference point has a known humidity, wherein the control device is designed to carry out the method according to the invention.
  • the object with regard to the vehicle is achieved by providing a vehicle with such a fuel cell system.
  • the vehicle is preferably a motor vehicle, which is designed in particular as a passenger car or truck. Furthermore, it is preferably a vehicle with an electric drive, wherein the electric drive can be supplied with electrical energy in particular by the fuel cell system. In this way, a particularly effective vehicle is provided.
  • the object with regard to the computer program is achieved by providing a computer program comprising instructions which cause the fuel cell system, the vehicle or the control unit to carry out the method steps according to the invention.
  • the task relating to the computer-readable medium is solved by a computer-readable medium on which the computer program is stored.
  • the computer-readable medium is preferably a volatile or permanent memory.
  • the computer-readable medium or such a memory is part of the control unit.
  • Fig. 1 a vehicle
  • Fig. 2 shows a method for initiating a purging process for a fuel cell system.
  • FIG. 1 shows a vehicle 6 according to the invention, which is a motor vehicle with an electric drive and a fuel cell system 7.
  • the fuel cell system 7 supplies the electric drive with electrical energy.
  • the fuel cell system 7 comprises a channel 8 in which a gas stream flows.
  • Two sensors 9, 10 are arranged at a distance from each other, which measure the ratio of hydrogen to nitrogen in the gas flow at the respective locations of the sensors 9, 10.
  • the first sensor 9 is arranged at a measuring point of the channel 8, while the second sensor 10 is arranged at a reference point of the channel 8.
  • the reference point is arranged adjacent to a water separator, which ensures that a known humidity of the gas flow is established at this point.
  • the ratio of hydrogen to nitrogen is identical at the measuring point and the reference point. This makes it possible to determine the humidity of the gas flow at the measuring point based on the different measurement results of both sensors 9, 10.
  • the vehicle comprises 6 a control device 11 which comprises a computer-readable medium 12 on which a computer program 13 is stored.
  • the computer program 13 comprises instructions which enable the device shown in Figure 1 to carry out the method according to the invention and/or the method as shown in Figure 2.
  • Figure 2 shows the method according to the invention, which can be carried out using the device from Figure 1.
  • the explanations of the method according to the invention relate to the device from Figure 2.
  • a measurement 1 is carried out using the first sensor at the measuring point.
  • Measurement 1 is a measurement of the ratio of hydrogen to nitrogen in the gas of the gas stream based on the thermal conductivity of the gas in the gas stream.
  • another measurement 2 is carried out using the second sensor at the reference point.
  • This measurement 2 is also a measurement of the ratio of hydrogen to nitrogen in the gas of the gas stream based on the thermal conductivity of the gas in the gas stream. Based on the two measured ratios of hydrogen to nitrogen at the two different points, the humidity of the gas in the gas stream is now determined 3.
  • An evaluation 4 is then carried out to determine whether the humidity of the gas in the gas stream at the measuring point exceeds a threshold value. If this threshold value is not exceeded, the method is started again. However, if the threshold value is exceeded by the humidity of the gas in the gas stream at the measuring point, a purging process is initiated 5, which purges the gas stream using ambient air, which greatly reduces the humidity of the gas in the gas stream. After the purging process has been initiated 5, the process is started again.

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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 a pour objet un procédé pour déterminer (3) l'humidité d'un flux de gaz au niveau d'un point de mesure d'un système de pile à combustible (7), l'humidité du flux de gaz au niveau du point de mesure étant déterminée (3) en fonction d'une différence entre des rapports hydrogène/azote du flux de gaz mesurés par deux capteurs (9, 10). L'invention concerne en outre un véhicule (6) et un système de pile à combustible (7). L'invention se rapporte également à un programme d'ordinateur (12) et à un support lisible par ordinateur (13).
EP23800798.3A 2022-11-08 2023-11-01 Procédé pour déterminer l'humidité d'un flux de gaz au niveau d'un point de mesure d'un système de pile à combustible, système de pile à combustible, véhicule, programme informatique et support lisible par ordinateur Pending EP4616461A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022211807.3A DE102022211807A1 (de) 2022-11-08 2022-11-08 Verfahren zur Ermittlung einer Feuchtigkeit eines Gasstroms an einer Messstelle eines Brennstoffzellensystem, Brennstoffzellensystem, Fahrzeug, Computerprogramm und computerlesbares Medium
PCT/EP2023/080445 WO2024099840A2 (fr) 2022-11-08 2023-11-01 Procédé pour déterminer l'humidité d'un flux de gaz au niveau d'un point de mesure d'un système de pile à combustible, système de pile à combustible, véhicule, programme informatique et support lisible par ordinateur

Publications (1)

Publication Number Publication Date
EP4616461A2 true EP4616461A2 (fr) 2025-09-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP23800798.3A Pending EP4616461A2 (fr) 2022-11-08 2023-11-01 Procédé pour déterminer l'humidité d'un flux de gaz au niveau d'un point de mesure d'un système de pile à combustible, système de pile à combustible, véhicule, programme informatique et support lisible par ordinateur

Country Status (4)

Country Link
EP (1) EP4616461A2 (fr)
CN (1) CN120092336A (fr)
DE (1) DE102022211807A1 (fr)
WO (1) WO2024099840A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024131229A1 (de) * 2024-10-25 2026-04-30 Bayerische Motoren Werke Aktiengesellschaft Verfahren, Steuereinheit und Abluftanlage mit Steuereinheit zur Bestimmung der Wasserstoffkonzentration

Family Cites Families (9)

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US6777120B2 (en) * 2001-05-23 2004-08-17 General Motors Corporation Relative humidity sensor with compensation for changes in pressure and gas composition
US20060134480A1 (en) 2004-10-07 2006-06-22 Ford Motor Company A sensor assembly for measuring humidity, pressure and temperature
US7858258B2 (en) 2006-03-03 2010-12-28 Gm Global Technology Operations, Inc. Cascaded fuel cell stack operation with anode gas recirculation
JP5581890B2 (ja) 2010-08-20 2014-09-03 トヨタ自動車株式会社 燃料電池システム、および、燃料電池システムの制御方法
CN112490473B (zh) 2020-10-28 2022-09-27 广州汽车集团股份有限公司 质子交换膜燃料电池的电堆动态水管理系统及其工作方法
EP4027417A1 (fr) * 2021-01-07 2022-07-13 AVL List GmbH Capteur à double fonction de mesure d'hydrogène et de l'humidité dans la boucle anodique d'un système de pile à combustible
CN113346110B (zh) 2021-05-20 2022-08-30 东风汽车集团股份有限公司 测定燃料电池气液分离器分离效率的装置及其控制方法
CN113540529A (zh) 2021-07-15 2021-10-22 中汽创智科技有限公司 氢气过量系数的测量系统及测量方法
US12381238B2 (en) * 2021-09-10 2025-08-05 Cummins Inc. Systems and methods to measure or control fuel cell stack excess hydrogen flow using humidity

Also Published As

Publication number Publication date
CN120092336A (zh) 2025-06-03
DE102022211807A1 (de) 2024-05-08
WO2024099840A3 (fr) 2024-07-04
WO2024099840A2 (fr) 2024-05-16

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