EP4649537A1 - Kontrollverfahren für die regelung der öffnungsdauer eines ablaufventils eines flüssigkeitsbehälters in einem anodenabgasabschnitt eines brennstoffzellensystems - Google Patents
Kontrollverfahren für die regelung der öffnungsdauer eines ablaufventils eines flüssigkeitsbehälters in einem anodenabgasabschnitt eines brennstoffzellensystemsInfo
- Publication number
- EP4649537A1 EP4649537A1 EP24719042.4A EP24719042A EP4649537A1 EP 4649537 A1 EP4649537 A1 EP 4649537A1 EP 24719042 A EP24719042 A EP 24719042A EP 4649537 A1 EP4649537 A1 EP 4649537A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anode
- drain valve
- anode pressure
- opening
- fuel cell
- 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
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
- H01M8/04097—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
- H01M8/04082—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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04402—Pressure; Ambient pressure; Flow 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
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04432—Pressure differences, e.g. between anode and cathode
-
- 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 present invention relates to a control method for controlling an opening duration of a drain valve of a liquid container in an anode exhaust gas section of a fuel cell system, a control device for carrying out such a control method, a computer program product for carrying out such a control method and a fuel cell system with a corresponding control device.
- the liquid container Because the liquid container has a finite size, it must be emptied at predetermined intervals so that the liquid contained in it can be drained into the environment in the form of the separated water. This process can also be referred to as the drain process. It is also known that, in addition to the discharge process of separated water, a portion of the recirculated anode exhaust gas is released into the environment in order to influence the composition of an anode feed gas in the desired manner and, in particular, to vary the fuel gas content. This process of discharging anode exhaust gas can be referred to as the purge process.
- the known control methods are based on the fact that when the liquid container reaches a defined maximum fill level, a corresponding drain valve is opened and the liquid is drained. This ensures that the liquid container is essentially completely emptied with the known control methods, i.e. the liquid completely leaves the liquid container. This means that at the end of this draining process, no more liquid flows through the drain valve, at least for a short period of time. At this point, there is no more liquid in the liquid container, but the drain valve is still open. This means that during the remaining opening time of the drain valve, anode exhaust gas flows through the drain valve in gaseous form and escapes into the environment.
- a disadvantage of known control methods is that the escape of the anode exhaust gas after the liquid container is completely emptied is not taken into account for subsequent purge processes.
- the fuel cell system With each drain process, i.e. with each opening cycle of the drain valve, the fuel cell system not only loses the liquid from the liquid container in the desired manner, but also anode exhaust gas, which, depending on the operating state, still contains a residual amount of fuel. This loss, which is not taken into account for other control steps, leads to reduced efficiency in the operation of the fuel cell system.
- a control method serves to control an opening duration of a drain valve of a liquid container in an anode exhaust gas section of a of a fuel cell system.
- Such a control procedure is characterized by the following steps:
- a control method according to the invention is based on the fundamental need for liquid which has been separated from the anode exhaust gas into a liquid container and collected there to be drained from this liquid container.
- the fuel cell system as described later, is also part of the present invention, equipped with a liquid container.
- This liquid container serves to receive and collect water which is separated in liquid form from the anode exhaust gas.
- the drain valve can be opened in the manner according to the invention in accordance with the prior art, for example based on a level monitoring in the liquid container. As soon as the drain valve is opened, liquid will pass from the liquid container through the drain valve. Direct drainage to the environment, but also drainage for other post-treatment or use can be provided within the scope of the present invention.
- the time at which the drain valve is opened defines the start of the opening process of the drain valve and, in the sense of the present invention, the start of the opening period of this drain valve.
- the anode pressure is recorded at the time the drain valve is opened.
- the anode pressure is recorded in particular in the anode exhaust gas section, in particular upstream of the drain valve or in particular directly at the anode outlet.
- an indirect determination for example in the anode feed section, is also conceivable in order to ensure indirect recording or determination of the anode pressure.
- the anode pressure at the time the drain valve is opened is therefore the current pressure situation that exists in this defined operating situation when the opening duration and thus the opening process of the drain valve begins.
- this anode pressure recorded at the time the drain valve is opened is used as the basis for an anode pressure reference value.
- the recorded anode pressure is set directly as the anode pressure reference value.
- further processing may also be provided, for example the use of the anode pressure supplemented by a safety margin to set the anode pressure reference value.
- the anode pressure is further monitored for the duration of the drain valve's opening.
- the anode pressure is used once to set the anode pressure reference value at the start of the opening process and is then preferably continuously monitored.
- This further monitoring of the anode pressure serves to determine an anode pressure deviation from the set anode pressure reference value, also preferably continuously. In other words, it is now possible to see to what extent the anode pressure changes from the set anode pressure reference value over the opening process. As soon as the anode pressure deviation exceeds a defined deviation limit, this leads to the drain valve being closed again.
- This closing mechanism by comparison is based on the fact that it can be assumed that the liquid container is empty at the end of the opening process. As soon as the last remaining amount of liquid has been drained from the liquid container through the drain valve, the anode pressure, which is continuously monitored, drops rapidly. This is because there is no longer any remaining liquid in the liquid container to create a pressure blockage against the anode drain. gas section, but rather the anode exhaust gas in the gaseous state begins to escape into the environment through the drain valve at this point in time. This escape leads to the monitored anode pressure falling in comparison to the anode pressure reference value and the anode pressure deviation increasing accordingly. This increase is detected and, by comparing it with the deviation limit value, is used to close the drain valve at this point in time.
- the pressure itself is not taken into account, but only an output from the pressure controller. This tries to regulate its target value. If a gas phase is detected, the pressure controller adjusts the gas supply to keep the pressure constant.
- the control method also serves to ensure the primary function of timely emptying of the liquid container.
- the opening duration is variable, namely as a functional relationship between the anode pressure and a current operating situation of the fuel cell system in the form of the anode pressure reference value.
- a side advantage may be that the number of necessary openings can be reduced, since only the variable necessary opening time must be used to completely empty the liquid container.
- feedback of the information on the amount of liquid drained can also be used to adjust the period until the next opening process so that an optimized opening time and/or an optimized period length can be achieved for each opening of the drain valve.
- the number of opening processes and in particular the duration between the opening processes can be optimized in this way.
- losses are also further reduced. Since the function is based on the detection of the gas phase, some of the gas always flows out. If the opening processes are optimized, the drain valve can be closed before the function is activated.
- the deviation limit can be either a fixed specification or a variable design.
- the deviation limit can be based on the operating situation of the fuel cell system or on the previous fill level of the liquid container.
- a maximum opening duration is specified in a control method according to the invention, whereby the drain valve is closed when the maximum opening duration is reached.
- By providing a maximum opening duration it is now ensured that the drain valve is closed even when this maximum opening duration is reached, but the liquid container has not yet been completely emptied and the anode pressure deviation has therefore not yet exceeded the deviation limit value.
- the maximum opening time is based on at least one an operating parameter of the fuel cell system. Since the maximum opening duration relates in particular to increasing the stability in the operation of the fuel cell system, a variable design can take the actual current operating situation of the fuel cell system into account. In particular, operating parameters such as the current generated by the fuel cell stack, the temperature in the fuel cell stack and/or the different pressures in the fuel cell stack are relevant influencing parameters for a maximum opening duration. Of course, the period, how often or at what time the opening process of the drain valve is started, can also be included in the adjustment of the maximum opening duration.
- a minimum opening duration is specified in a control method according to the invention, with the drain valve remaining open for at least the minimum opening duration.
- the anode pressure deviation already exceeds the deviation limit value earlier, so that in this way it is ensured that the drain valve cannot switch unnecessarily quickly, e.g. due to high dynamics, in particular in a way that damages the valve. This can be done in combination with or separately from the use of the maximum opening duration.
- a discharge amount of liquid is determined during the opening period and/or after the closing of the drain valve on the basis of the opening period. Not only qualitative monitoring and control interventions, but also quantitative control are possible here.
- a determination can be made as to which volume flow and thus which total amount of liquid was discharged through the drain valve during the opening period.
- a known volume flow through a known opening geometry of the drain valve is used.
- additional physical parameters in particular the driving force for the discharge, which for example is a force determined by gravity, can also be used.
- conditioned discharge function or, based on the anode pressure, a pressurized driving force is used for the discharge function. It is also possible that the discharged and thus determined quantity is compared with the respective quantity of the last opening process, so that a correction of the opening period is possible in order to ensure that the total number of opening processes as well as the period between the individual opening processes can be further optimized for the control process.
- the anode pressure reference value corresponds exactly to the anode pressure recorded at the time the drain valve is opened. This means that no additional algorithmic processing of the anode pressure is necessary, since this can be set directly and precisely as the anode pressure reference value.
- the anode pressure is no longer adjusted when the operating situation changes during the opening process, but rather the anode pressure reference value is kept constant throughout the opening process, even when the operating situations of the fuel cell system are different and change.
- the anode pressure reference value in a control method according to the invention corresponds to the recorded anode pressure at the time the drain valve is opened, plus a safety margin.
- the recorded anode pressure is used, a safety margin is added and then this combination is set as the anode pressure reference value.
- expected fluctuations, latencies or measurement inaccuracies can be directly taken into account and, so to speak, compensated in advance and integrated into the anode pressure reference value optimized in this way.
- the anode pressure reference value is varied over the opening time on the basis of an anode feed pressure in an anode feed section of the fuel cell system. Because the anode pressure is now dependent on the operating state operating state the fuel cell system is in, adjusting the anode pressure reference value can bring advantages if the drain valve is open for longer periods. If, for example, it is detected in the anode feed section via monitoring of an anode feed pressure that the fuel cell system is changing its operating situation, for example with an increased anode feed pressure, it can be assumed that the anode pressure in the area of the anode gas section is also increasing.
- the anode pressure reference value set at the beginning of the opening of the drain valve no longer matches this changed operating situation of the fuel cell system.
- the drain valve is closed immediately when the deviation limit is exceeded.
- An alternative to immediate closure is a defined run-on period, in order to be able to determine a defined gas loss of anode exhaust gas, particularly over this run-on period, as explained later.
- immediate closure leads to further optimization with regard to the advantage of increased efficiency in the operation of the fuel cell system, since the amount of loss of anode exhaust gas can be reduced to a minimum.
- a control method determines a run-on period from when the deviation limit is exceeded until the deviation limit is again undershot after the drain valve is closed, whereby a loss of anode exhaust gas through the opened drain valve is determined in particular on the basis of the run-on period determined.
- a quantitative evaluation of the control method and a corresponding feedback are also possible with regard to the gas phase. integration into the control loop is possible. Because the run-on time is known with regard to the overshoot in the control, i.e. the time until the control step in the form of closing the drain valve takes effect in the form of the deviation limit being undershot, a defined run-on time can be determined.
- the present invention also relates to a control device for controlling an opening duration of a drain valve of a liquid container in an anode exhaust section of a fuel cell system.
- a control device for controlling an opening duration of a drain valve of a liquid container in an anode exhaust section of a fuel cell system.
- Such a control device is characterized in that an opening module is provided for opening the drain valve to drain liquid from the liquid container.
- a detection module is also provided for detecting the anode pressure in an anode exhaust section at the time the drain valve is opened.
- an anode pressure reference value is set based on the detected anode pressure.
- the control device is also equipped with a monitoring module for further monitoring the anode pressure during the opening duration of the drain valve.
- Using a determination module an anode pressure deviation of the monitored anode pressure from the set anode pressure reference value is determined.
- a closing module is provided for closing the drain valve when the determined anode pressure deviation exceeds a deviation limit value.
- the opening module, the detection module, the setting module, the monitoring module, the determination module and/or the closing module are designed in particular for carrying out a control method according to the invention.
- a control device according to the invention therefore brings with it the same advantages as have been explained in detail with reference to a control method according to the invention.
- the present invention also relates to a computer program product comprising instructions which, when executed by a computer, cause the computer to allow the steps of a control method according to the invention to be carried out.
- a computer program product according to the invention therefore also brings with it the same advantages as have been explained in detail with reference to a control method according to the invention.
- the present invention relates to a fuel cell system for generating electrical power.
- This fuel cell system has a fuel cell stack with an anode section and a cathode section.
- the anode section is equipped with an anode feed section for feeding anode feed gas and an anode discharge section for discharging anode exhaust gas.
- the cathode section is designed with a cathode feed section for feeding cathode feed gas and a cathode discharge section for discharging cathode exhaust gas.
- Such a fuel cell system is characterized in that a liquid container is arranged in the anode discharge section for collecting separated liquid from the anode exhaust gas with a drain valve for draining the collected liquid.
- a control device according to the present invention is also arranged there.
- a fuel cell system according to the invention thus brings with it the same advantages as have been explained in detail with reference to a control method according to the invention.
- Fig. 1 shows an embodiment of a fuel cell system according to the invention
- Fig. 2 shows another embodiment of a fuel cell system according to the invention
- Fig. 3 shows an embodiment of a control device according to the invention
- FIG. 4 a possible run of a method according to the invention
- Fig. 5 another possible run of a method according to the invention
- Fig. 6 shows another possible run of a method according to the invention.
- FIG. 1 shows a schematic of a fuel cell system 100 with a fuel cell stack 110.
- This fuel cell stack 110 is schematically divided into an anode section 120 and a cathode section 130.
- Anode supply gas AZG is supplied to the anode section 120 via an anode supply section 122.
- the anode supply gas AZG here has in particular a defined proportion of fuel, which can now chemically react within the fuel cell stack 110 with cathode supply gas KZG supplied via the cathode supply section 132 in a defined manner to generate electricity.
- cathode exhaust gas KAG which can be discharged in particular to the environment via the cathode discharge section 134.
- the resulting anode exhaust gas AAG is led out of the anode section 120 of the fuel cell stack 110 via the anode discharge section 124 and returned via a recirculation section 128.
- the recirculated anode exhaust gas AAG which can also be referred to as recirculation gas, is loaded with water due to the chemical reaction processes within the fuel cell stack 110. This water can be present in both the liquid and gaseous phases.
- a water separator (not shown) is provided, which is particularly integrated into the liquid container 140.
- the liquid container 140 therefore serves at least to receive and collect the liquid F, but in particular also to separate this liquid from the anode exhaust gas AAG in the recirculation section 128.
- a control device 10 is provided, which can be designed, for example, according to Figure 3.
- the control device 10 is therefore connected in a signal-communicating manner not only to the drain valve 142, but also to an anode pressure sensor 126.
- Figure 2 is based on the embodiment of Figure 1 and also shows a similar fuel cell system 100. However, this is supplemented in that a degassing valve 144 for a separate purge process is now provided in the recirculation section 128, here at the end of the water-separating liquid container 140.
- the control device 10 starts when, for example, the opening module 20 opens the drain valve 142 in response to an external command, for example based on a defined maximum fill level within the liquid container 140.
- the liquid F can now leave the liquid container 140 via the drain valve 142, for example by means of gravity or the excess pressure in the anode discharge section 124.
- the anode pressure AP is detected by the detection module 30 via the anode pressure sensor 126. This detected anode pressure AP is passed on to a setting module 40 and set there either directly or with a safety margin as the anode pressure reference value APR.
- the anode pressure AP is preferably continuously monitored again via the anode pressure sensor 126, now with the aid of the monitoring module 50.
- the monitoring module 50 then transfers the recorded and continuously monitored anode pressure AP to a determination module 60, which can also continuously determine an anode pressure deviation APA in comparison with the set anode pressure reference value APR.
- a comparison is now made with the aid of the closing module. of the determined anode pressure deviation APA from an anode pressure deviation limit value AG and a closing command is sent to the drain valve 142 as soon as the anode pressure deviation APA exceeds the predetermined anode pressure limit value.
- Figure 4 shows a possible progression of the parameters in a control method according to the invention.
- the time axes are plotted from left to right, with different parameters being considered.
- the upper diagram shows the progression of the anode pressure AP.
- the left dashed vertical line represents the start of the opening process and thus the beginning of the opening duration OD.
- the anode pressure AP recorded exactly at the time of opening is set here without any surcharge as the anode pressure reference value APR, as can be seen in the upper diagram.
- the anode pressure AP increases slightly and then drops sharply after a certain duration. This respective difference is continuously monitored as the anode pressure deviation APA and is plotted separately in the lower diagram over the same period of time.
- the anode pressure AP runs just above or just below the anode pressure reference value APR, so that the anode pressure deviation APA also remains essentially constant.
- APR anode pressure reference value
- the anode pressure deviation APA becomes significantly larger, it continues to rise so that a deviation limit value AG is exceeded, as can be seen in the diagram below.
- the point in time at which the deviation limit value AG is exceeded now represents the signal that leads to the closing of the drain valve 142 and thus to the end of the opening period OD.
- the anode pressure AP rises again and the anode pressure deviation APA falls again accordingly.
- Figure 5 shows a similar situation to Figure 4, but the anode pressure AP does not drop so far that an anode pressure deviation APA would exceed the deviation limit value AG. Nevertheless, a control method according to the invention closes the drain valve 142 after a defined opening time OD, namely when the maximum opening time of OD-MAX has been reached.
- a minimum opening time OD-MIN is also specified here, so that in this embodiment of the control method a minimum OD-MIN and a maximum opening time OD-MAX are each specified as a limiting corridor for the control procedure.
- Figure 6 also shows a further development of a control method according to the invention with regard to several features, which can of course be freely combined with one another.
- the anode pressure AP prevailing at this opening time is not set directly as the anode pressure reference value APR. Instead, a safety margin is provided and the anode pressure reference value APR is higher by this safety margin than the anode pressure AP recorded at this opening time.
- the opening duration OD is accordingly shorter than in Figure 4.
- an overrun time ND is also recorded, namely the period of time remaining after the deviation limit AG has been exceeded and the drain valve 142 has been closed as a result, until the anode pressure deviation APA falls below the deviation limit value AG again.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50223/2023A AT526831B1 (de) | 2023-03-27 | 2023-03-27 | Kontrollverfahren für eine Kontrolle einer Öffnungsdauer eines Ablaufventils eines Flüssigkeitsbehälters in einem Anodenabgasabschnitt eines Brennstoffzellensystems |
| PCT/AT2024/060108 WO2024197327A1 (de) | 2023-03-27 | 2024-03-26 | Kontrollverfahren für die regelung der öffnungsdauer eines ablaufventils eines flüssigkeitsbehälters in einem anodenabgasabschnitt eines brennstoffzellensystems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4649537A1 true EP4649537A1 (de) | 2025-11-19 |
Family
ID=90731353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24719042.4A Pending EP4649537A1 (de) | 2023-03-27 | 2024-03-26 | Kontrollverfahren für die regelung der öffnungsdauer eines ablaufventils eines flüssigkeitsbehälters in einem anodenabgasabschnitt eines brennstoffzellensystems |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4649537A1 (de) |
| CN (1) | CN120981944A (de) |
| AT (1) | AT526831B1 (de) |
| WO (1) | WO2024197327A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005091397A2 (en) * | 2004-03-16 | 2005-09-29 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system and control method of same |
| US9105888B2 (en) * | 2011-10-07 | 2015-08-11 | GM Global Technology Operations LLC | Anode purge and drain valve strategy for fuel cell system |
| DE102017219045A1 (de) * | 2017-10-25 | 2019-04-25 | Robert Bosch Gmbh | Verfahren zur Entfernung von Produktwasser aus einer Brennstoffzelle |
| DE102021118047A1 (de) * | 2021-07-13 | 2023-01-19 | Ekpo Fuel Cell Technologies Gmbh | Brennstoffzellensystem und Verfahren zum Austragen von Wasser aus einem Brennstoffzellensystem |
-
2023
- 2023-03-27 AT ATA50223/2023A patent/AT526831B1/de active
-
2024
- 2024-03-26 WO PCT/AT2024/060108 patent/WO2024197327A1/de not_active Ceased
- 2024-03-26 CN CN202480022440.9A patent/CN120981944A/zh active Pending
- 2024-03-26 EP EP24719042.4A patent/EP4649537A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AT526831B1 (de) | 2024-08-15 |
| AT526831A4 (de) | 2024-08-15 |
| WO2024197327A1 (de) | 2024-10-03 |
| CN120981944A (zh) | 2025-11-18 |
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