WO2023041388A1 - Brennstoffzellensystem mit selbsttätiger erkennung eines geleerten wasserabscheiders - Google Patents
Brennstoffzellensystem mit selbsttätiger erkennung eines geleerten wasserabscheiders Download PDFInfo
- Publication number
- WO2023041388A1 WO2023041388A1 PCT/EP2022/074801 EP2022074801W WO2023041388A1 WO 2023041388 A1 WO2023041388 A1 WO 2023041388A1 EP 2022074801 W EP2022074801 W EP 2022074801W WO 2023041388 A1 WO2023041388 A1 WO 2023041388A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water separator
- coupled
- anode
- fuel cell
- hydrogen
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000000446 fuel Substances 0.000 title claims abstract description 49
- 238000001514 detection method Methods 0.000 title claims description 7
- 239000007789 gas Substances 0.000 claims abstract description 79
- 239000001257 hydrogen Substances 0.000 claims abstract description 69
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 69
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims description 15
- 239000002912 waste gas Substances 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
- H01M8/04164—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 condensers, gas-liquid separators or filters
-
- 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
- H01M8/04604—Power, energy, capacity or load
- H01M8/04626—Power, energy, capacity or load of auxiliary devices, e.g. batteries, capacitors
-
- 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 fuel cell system.
- Fuel cells use reaction gases in the form of hydrogen and oxygen to generate electrical power through catalytic bonding while releasing waste heat and water. Air can be used instead of pure oxygen, particularly when used in vehicles.
- the reaction gases are to be fed continuously to the fuel cells, with hydrogen being fed to the fuel cells on the anode side and oxygen on the cathode side.
- anodes and cathodes can be separated from one another by a membrane.
- Several fuel cells can be combined in the form of a stack with common supply and exhaust channels in order to increase the electrical voltage generated and to optimize the operation of the fuel cells.
- the hydrogen supplied on the anode side is at least partially consumed, with water being produced on the cathode side, which also diffuses through to the anode.
- Water separators are usually used to separate liquid water and a gaseous part of the anode waste gas, which often also store separated water in addition to the separation function. When the water separator's reservoir is full, the stored water is discharged by opening a drain valve, also known as a drain valve. Nitrogen can get into the anode through diffusion processes. A further source of nitrogen can also be provided by hydrogen that is not supplied in completely pure form. The presence of nitrogen in the anode can reduce the cell voltage and thus the stack voltage delivered by the fuel cell stack, resulting in efficiency losses. To avoid this, gas is repeatedly discharged from the anode compartment during operation in order to reduce the nitrogen content there. This discharge is done with a flush valve, also known as a purge valve.
- the fuel cells are supplied with hydrogen by means of hydrogen metering valves, which can be designed as proportional valves.
- a possible control strategy envisages using such a valve to adjust the gas pressure within an anode path, measured by a pressure sensor at a defined position, to a defined target pressure as a function of the system operating point. Due to consumption of the hydrogen due to the electrochemical conversion or due to other losses, for example due to the drain valve being opened for too long or due to the flushing valve being opened, fresh hydrogen is always supplied at the desired setpoint pressure. Even draining water leads to a reduction in the water column in the water separator by opening the drain valve and requires an increased flow of fresh gas through the hydrogen metering valve in order to maintain the desired setpoint pressure.
- depleted anode off-gas which still contains useful hydrogen, is recirculated to a hydrogen inlet.
- This is often achieved using a combination of a jet pump and an active gas pumping unit.
- the jet pump uses the pressure of the fresh hydrogen supplied to recirculate gas in the so-called anode path.
- the active gas delivery unit supports this recirculation process.
- the object of the invention is therefore to propose a device or a method with which a state of a water separator can be reliably identified in which no more liquid water is passing through the drain valve during a draining process and a previously formed water column is reduced to a minimum.
- a fuel cell system having at least one fuel cell with an anode and a cathode, a hydrogen supply line, a jet pump coupled to the hydrogen supply line, an anode exhaust gas line, a water separator, a drain valve, a gas delivery unit coupled to the anode exhaust gas line and the jet pump, and a control unit, wherein the water separator is coupled to the anode off-gas line and is configured to separate and collect water from an anode off-gas, wherein the drain valve is coupled to the water separator and is configured to drain separated water from the water separator, wherein the gas delivery unit is configured to collect anode off-gas to recirculate via the jet pump to the hydrogen supply line.
- control unit is coupled to the gas delivery unit, and the control unit is designed to at least temporarily detect a power consumption of the gas delivery unit when the drain valve is open and to generate a control signal and make it available at a control signal output if the power consumption drops by a predeterminable proportion, wherein the control signal represents an empty water trap.
- the fuel cell system preferably has a number of fuel cells which are combined to form a fuel cell stack.
- PEM polymer electrolyte membrane
- PEM polymer electrolyte membrane
- others could Be realized forms of fuel cells, which may include, inter alia, solid oxide and direct methanol fuel cells.
- the fuel cells can be coupled on the cathode side to an air supply unit, which could have one or more compressors, which introduces pressurized air into a cathode path upstream of the fuel cell system.
- the compressor or compressors could be operated by an electric motor that is supplied with a voltage that is provided by the fuel cell system itself and/or an external voltage source, such as a buffer battery.
- a turbine could also be provided, which is arranged downstream of the fuel cells in the cathode path and supports the compressor or compressors.
- the hydrogen supply line supplies hydrogen to the fuel cell system and can consequently be connected to a hydrogen source.
- the jet pump which mixes anode exhaust gas into the hydrogen feed line, is provided downstream of the hydrogen source.
- the anode waste gas which can still contain a proportion of unused hydrogen, is thereby fed back into the anode path and is not lost for use in the fuel cell.
- the jet pump could have a propulsion nozzle for introducing the hydrogen into a mixing comb to produce a mixture of fresh hydrogen and recirculated anode exhaust gas.
- the type of jet pump is irrelevant to the invention. For example, reference is made to DE102016210020A1, in which jet pumps are explained.
- the gas delivery unit which can also be known as a recirculation fan, is provided to support the jet pump. It could be switched on during the flushing process or when the jet pump was expected to deliver insufficient power.
- the anode exhaust line carries anode exhaust away from the fuel cell system.
- the water separator is provided Water removed from the anode exhaust.
- the state of the water separator can be detected in which the water separator is practically completely empty or the water column formed therein is reduced to a minimum. This is achieved by recording and examining the power consumption of the gas delivery unit.
- the input power depends on whether gas leaves an anode path. If, for example, the drain valve is opened and gas escapes from the anode exhaust gas line through the drain valve, the function of the jet pump is supported. Consequently, the gas delivery unit provided to support the jet pump has to apply less mechanical power for this operating state, with the result that its power consumption also decreases rapidly. If the fuel cell system is in stationary operation and the water separator is emptied by opening the drain valve with water flowing out, only a small amount of counter-regulation is required to maintain the target pressure in the anode in order to bring the anode gas volume, which has been increased by the water volume, to the desired target pressure.
- a drop in the power consumption by the predefinable proportion can be precisely detected. If this is detected, this is an indication that the water separator is completely empty. The difference in performance that occurs is more pronounced the larger the opening of the drain valve and consequently the stronger the gas flow that begins from the drain valve.
- this knowledge can be used, for example, to close the drain valve again after the water separator has been emptied. In addition, it can be used to to continuously calibrate complex models for determining the amount of water in the water separator.
- the power consumption of the gas delivery unit after the release valve is closed again could be slightly lower than before it was opened.
- the reason for this could be the changing gas concentration in the anode due to the discharge of gas.
- the reduction in power consumption could be determined depending on the amount of water and gas discharged, as well as the concentration and temperature at the start of the discharge process.
- the predefinable proportion could be at least 10%, preferably at least 25% of the power consumption.
- the proportion by which the power consumption drops can be dependent on the size of the cross section of the discharge valve through which flow occurs.
- the proportion can also be dependent on activation of the drain valve. In the majority of applications of the fuel cell system in motor vehicles, a proportion of around 25% can be a realistic quantity that can be detected easily, reliably and with the exclusion of measurement noise.
- control unit could be designed to actuate the discharge valve to open and/or close and to record the power consumption after the actuation to open the discharge valve. If the control unit controls the discharge valve to open, the control unit can have direct knowledge of when the discharge valve is opened and consequently start recording the power consumption at this point in time or directly before it. Equally, it makes sense for the control unit to also close the drain valve, since the control unit has immediate knowledge of this status from the previously described detection of the desired, emptied state of the water separator and can consequently also implement this immediately to close the drain valve.
- the control unit could be configured to close the drain valve by transmitting the control signal.
- the detection of the emptied State of the water trap is therefore directly implemented to stop draining the water trap.
- a hydrogen source could be coupled to the hydrogen supply line by means of a hydrogen valve, with the hydrogen valve being controlled in order to achieve and/or maintain a setpoint pressure of hydrogen in the anode.
- the inlet pressure can therefore be regulated by appropriately controlling the hydrogen valve.
- a corresponding sensor could be provided in particular downstream of the jet pump.
- the hydrogen valve could be located upstream of the jet pump. It is particularly preferred if the hydrogen valve is arranged upstream of a mixing chamber which is coupled to the jet pump. The hydrogen valve is therefore an independent device for regulating the pressure.
- the water separator could be arranged upstream of the gas transport unit.
- the gas delivery unit is arranged downstream of the water separator and is only supplied with anode waste gas that has been largely freed from water.
- the invention also relates to a method for operating a fuel cell system, comprising supplying hydrogen to an anode of at least one fuel cell via a hydrogen supply line, recirculation of anode waste gas from an anode waste gas line via a jet pump coupled to the hydrogen supply line and a gas delivery unit coupled to the anode waste gas line and the jet pump into the Hydrogen supply, separating and collecting water from the anode off-gas by means of a water separator coupled to the anode off-gas line, and at least temporarily draining water from the water separator.
- the predefinable proportion could be at least 25% of the power consumption.
- the method may include closing the dump valve by transmitting the control signal through the control unit.
- FIG. 1 shows a schematic representation of the fuel cell system
- FIG. 2 shows a diagram showing the fill level, the opening state of the drain valve and the power consumption of the gas delivery unit
- FIG. 3 shows a block-based representation of a method for operating a fuel cell system.
- FIG. 1 shows part of a fuel cell system 2 with a fuel cell 4 with an anode 6, a cathode 8 and a membrane 10 lying between them.
- the anode 6 is connected to a hydrogen feed line 12, via which the anode 6 is supplied with hydrogen.
- a jet pump 14 is coupled to the hydrogen supply line 12 which, for example, is preceded by a mixing chamber 16 upstream.
- the anode 6 is further connected to an anode exhaust line 18 to which a water separator 20 is coupled.
- the water separator 20 can separate and collect water from anode off-gas.
- a drain valve 22 is coupled to the water separator 20 to drain water collected therein and direct it to an outlet 24 .
- a gas delivery unit 26 is coupled to the anode exhaust gas line 18 and the jet pump 14 and supports the jet pump 14 in the recirculation of the anode exhaust gas.
- a control unit 28 is coupled to the gas delivery unit 26 and is designed to at least temporarily detect a power consumption of the gas delivery unit 26 when the drain valve 22 is open and to generate a control signal 30 and make it available at a control signal output 32 if the power consumption drops by a predeterminable proportion represents an emptied water trap 20.
- the drop in power consumption could be at least 25%.
- the water separator 20 is in a condition where the collected water is drained and gas begins to flow out of the water separator 20 through the drain valve. This state can be detected precisely and used in particular to close the drain valve 22 .
- the control signal 30 could be transmitted to the drain valve 22 .
- the gas delivery unit 26 is an electrically operated gas delivery unit 26 whose power consumption can be easily detected.
- a flushing valve 34 is provided, for example, which is provided for flushing the anode 6 in order to remove nitrogen.
- the purge valve 34 is also connected to the outlet 24 .
- a hydrogen source 36 is provided upstream of the jet pump 14 , which is coupled to the hydrogen supply line 12 via the mixing chamber 16 via a hydrogen valve 38 .
- the hydrogen valve 38 is controlled to achieve and/or maintain a setpoint pressure of hydrogen in the anode 6 .
- 2 shows an example of a diagram in which a fill level 40 of the water separator 20, an opening state 42 of the drain valve 22 and a power consumption 44 of the gas delivery unit 26 are shown one above the other over time.
- the fill level 40 of the water separator 20 is 100%, for example.
- the drain valve 22 is open, the opening state is "1" here.
- the fill level 40 consequently decreases continuously.
- the power consumption 44 of the gas delivery unit 26 is “H1” here, which corresponds to a higher power consumption.
- the power consumption 44 drops abruptly to a lower level “LO”.
- the fill level 40 remains at 0% while the drain valve 22 is still open. This state can be recognized by the control unit 28 and used to close the drain valve 22 .
- the opening state 42 of the drain valve 22 changes to "0", after which the level 40 starts to rise continuously and the power consumption 44 returns to the previous level "H1".
- the drop from “HI” to “LO” can be about 50% here, for example.
- Fig. 3 also shows a schematic representation of the method explained above for operating the fuel cell system 2 and has the steps of supplying 46 hydrogen to the anode 6 via the hydrogen supply line 12, the recirculation 48 of anode exhaust gas from the anode exhaust gas line 18 via the hydrogen supply line 12 coupled jet pump 14 and the gas delivery unit 26 coupled to the anode exhaust gas line 18 and the jet pump 14 into the hydrogen supply line 12, separating 50 and collecting 52 water from the anode exhaust gas by means of the water separator 20 coupled to the anode exhaust gas line 18, and at least temporarily draining 54 water from the water separator 20 on.
- the method also includes detecting 56 the power consumption 44 of the gas delivery unit 26 when the drain valve 22 is open by the control unit 28 coupled to the gas delivery unit 26 and, if the power consumption 44 drops by a predeterminable proportion, generating 58 the control signal 30 and providing it 60 at the control signal output 32 , wherein the control signal 30 represents an emptied water separator 20.
- the method also includes, for example, the closing 62 of the drain valve 22 by transmission 64 of the control signal 30 by the control unit 28.
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- 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
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280062155.0A CN117941111A (zh) | 2021-09-15 | 2022-09-07 | 具有对被清空的水分离器的自动识别的燃料电池系统 |
JP2024515093A JP2024535763A (ja) | 2021-09-15 | 2022-09-07 | 空になった水分離器を自動で認識する燃料電池システム |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021210194.1 | 2021-09-15 | ||
DE102021210194.1A DE102021210194A1 (de) | 2021-09-15 | 2021-09-15 | Brennstoffzellensystem mit selbsttätiger Erkennung eines geleerten Wasserabscheiders |
Publications (1)
Publication Number | Publication Date |
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WO2023041388A1 true WO2023041388A1 (de) | 2023-03-23 |
Family
ID=83271227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2022/074801 WO2023041388A1 (de) | 2021-09-15 | 2022-09-07 | Brennstoffzellensystem mit selbsttätiger erkennung eines geleerten wasserabscheiders |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2024535763A (de) |
CN (1) | CN117941111A (de) |
DE (1) | DE102021210194A1 (de) |
WO (1) | WO2023041388A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11955674B1 (en) * | 2023-03-07 | 2024-04-09 | Chevron Phillips Chemical Company Lp | Use of a fuel cell to decarbonize a hydrocarbon cracking system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016210020A1 (de) | 2016-06-07 | 2017-12-07 | Robert Bosch Gmbh | Strahlpumpe für eine Brennstoffzelle, Brennstoffzelle und Verfahren |
DE102018109743A1 (de) * | 2017-04-26 | 2018-10-31 | GM Global Technology Operations LLC | Brennstoffzellenarchitekturen, Überwachungs-Systeme und Steuerlogik zur Charakterisierung des Fluidstroms in Brennstoffzellenstapeln |
DE102019201183A1 (de) * | 2019-01-30 | 2020-07-30 | Robert Bosch Gmbh | Förderaggregat für einen Anodenkreislauf eines Brennstoffzellen-Systems zur Förderung eines gasförmigen Medium |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011102336A1 (de) | 2011-05-25 | 2012-11-29 | Daimler Ag | Rezirkulationseinrichtung für ein Brennstoffzellensystem |
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2021
- 2021-09-15 DE DE102021210194.1A patent/DE102021210194A1/de active Pending
-
2022
- 2022-09-07 WO PCT/EP2022/074801 patent/WO2023041388A1/de active Application Filing
- 2022-09-07 CN CN202280062155.0A patent/CN117941111A/zh active Pending
- 2022-09-07 JP JP2024515093A patent/JP2024535763A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016210020A1 (de) | 2016-06-07 | 2017-12-07 | Robert Bosch Gmbh | Strahlpumpe für eine Brennstoffzelle, Brennstoffzelle und Verfahren |
DE102018109743A1 (de) * | 2017-04-26 | 2018-10-31 | GM Global Technology Operations LLC | Brennstoffzellenarchitekturen, Überwachungs-Systeme und Steuerlogik zur Charakterisierung des Fluidstroms in Brennstoffzellenstapeln |
DE102019201183A1 (de) * | 2019-01-30 | 2020-07-30 | Robert Bosch Gmbh | Förderaggregat für einen Anodenkreislauf eines Brennstoffzellen-Systems zur Förderung eines gasförmigen Medium |
Also Published As
Publication number | Publication date |
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DE102021210194A1 (de) | 2023-03-16 |
JP2024535763A (ja) | 2024-10-02 |
CN117941111A (zh) | 2024-04-26 |
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