CN110649290A - Testing device for fuel cell humidification system - Google Patents
Testing device for fuel cell humidification system Download PDFInfo
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- CN110649290A CN110649290A CN201910802509.0A CN201910802509A CN110649290A CN 110649290 A CN110649290 A CN 110649290A CN 201910802509 A CN201910802509 A CN 201910802509A CN 110649290 A CN110649290 A CN 110649290A
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- fuel cell
- humidification system
- ball valve
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- cell humidification
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- 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
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- 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
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04373—Temperature; Ambient temperature of auxiliary devices, e.g. reformers, compressors, burners
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- 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
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- 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
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- 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
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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
The invention discloses a testing device of a fuel cell humidification system, which relates to the field of fuel cells and comprises an air source, a water source, a first ball valve, a second ball valve, a mass flow controller, a temperature sensor, a humidity sensor, a first flowmeter and a second flowmeter, wherein the air source is communicated with an inlet of the first ball valve, an outlet of the first ball valve is communicated with an inlet of the mass flow controller, the water source is communicated with an inlet of the second ball valve, and an outlet of the second ball valve is communicated with an inlet of the first flowmeter. Through setting up temperature sensor and humidity transducer, with the gas outlet of temperature sensor and humidity transducer and the fuel cell humidification system who awaits measuring, can detect out the temperature and the humidity of the gas after the humidification, can test fuel cell humidification system's humidification ability according to the volume of air feed, the volume of the water that consumes, the temperature and the humidity of the gas after the humidification, ensure that fuel cell humidification system can satisfy fuel cell's humidification requirement.
Description
Technical Field
The invention relates to the field of fuel cells, in particular to a testing device of a fuel cell humidification system.
Background
The fuel cell is a chemical device which directly converts chemical energy of fuel into electric energy, belongs to electrochemical power generation, and is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation.
Fuel cells generate electrical energy by chemically reacting hydrogen at the anode with oxygen (or air) at the cathode. In order to lubricate the proton exchange membrane reasonably and reduce the resistance of proton conduction during the operation of the fuel cell, the gases involved in the reaction need to be humidified. A fuel cell humidification system is therefore typically provided with the fuel cell.
The humidifying capacity of the fuel cell humidifying system has great influence on the normal operation of the fuel cell, if the humidification is insufficient, the dehydration of the proton exchange membrane can be caused, the performance of the cell is reduced, but if the humidification is excessive, the water drainage load of the fuel cell can be increased, and the flooding of the cell can be caused in severe cases.
Disclosure of Invention
The embodiment of the invention provides a testing device of a fuel cell humidification system, which can test the fuel cell humidification system and ensure that the fuel cell humidification system can meet the humidification requirement of a fuel cell. The technical scheme is as follows:
the embodiment of the invention provides a testing device of a fuel cell humidification system, which comprises a gas source, a water source, a first ball valve, a second ball valve, a mass flow controller, a temperature sensor, a humidity sensor, a first flow meter and a second flow meter, wherein the gas source is communicated with an inlet of the first ball valve, an outlet of the first ball valve is communicated with an inlet of the mass flow controller, an outlet of the mass flow controller is used for being communicated with an air inlet of the fuel cell humidification system to be tested, the temperature sensor and the humidity sensor are used for being communicated with an air outlet of the fuel cell humidification system to be tested, the water source is communicated with an inlet of the second ball valve, an outlet of the second ball valve is communicated with an inlet of the first flow meter, an outlet of the first flow meter is used for being communicated with a water inlet of the fuel cell humidification system to be tested, and the inlet of the second flowmeter is used for communicating with the water outlet of the fuel cell humidification system to be tested.
Optionally, a pressure relief valve is included, the pressure relief valve being connected between the outlet of the first ball valve and the inlet of the mass flow controller.
Optionally, the system further comprises a first pressure sensor connected to the outlet of the mass flow controller.
Optionally, the test device further comprises a second pressure sensor, wherein the second pressure sensor is used for being connected with an air outlet of the fuel cell humidification system to be tested.
Optionally, the test device further comprises a console connected with the mass flow controller, the temperature sensor, the humidity sensor, the first flow meter and the second flow meter, and the console is further used for being connected with a controller of the fuel cell humidification system to be tested.
Optionally, a timer for measuring the working time of the fuel cell humidification system to be tested is further included, and the timer is connected with the console.
Optionally, a filter is respectively arranged between the air source and the inlet of the first ball valve and between the water source and the inlet of the second ball valve.
Optionally, an air dryer is connected between the air source and the inlet of the first ball valve.
Optionally, the first and second flow meters are both turbine flow meters.
Optionally, the fuel cell humidifier further comprises a water storage bottle, wherein the water storage bottle is used for being communicated with a water outlet of the fuel cell humidification system to be tested, and the water storage bottle is further communicated with the water source.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least: through setting up air supply, first ball valve, mass flow controller, with the import intercommunication of air supply and first ball valve, the export of first ball valve and mass flow controller's import intercommunication to can be through mass flow controller's export to the air inlet air feed of the fuel cell humidification system that awaits measuring, can accurately obtain gaseous mass flow through mass flow controller, be convenient for control to the speed of fuel cell humidification system's air feed. Through setting up the water source, the second ball valve, first flowmeter and second flowmeter, communicate the water source with the import of second ball valve, the export of second ball valve communicates with the import of first flowmeter, thereby can supply water to the fuel cell humidification system that awaits measuring, and accurately obtain the volume of supplying water through first flowmeter, communicate the delivery port of second flowmeter and the fuel cell humidification system that awaits measuring, can accurately obtain the volume of discharged water in the fuel cell humidification system that awaits measuring from awaiting measuring, can obtain the volume of consumed water according to the volume of supplying water and the volume of discharged water. Through setting up temperature sensor and humidity transducer, with the gas outlet of temperature sensor and humidity transducer and the fuel cell humidification system who awaits measuring, can detect out the temperature and the humidity of the gas after the humidification, can test fuel cell humidification system's humidification ability according to the volume of air feed, the volume of the water that consumes, the temperature and the humidity of the gas after the humidification, ensure that fuel cell humidification system can satisfy fuel cell's humidification requirement.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a testing device of a fuel cell humidification system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a testing device of another fuel cell humidification system provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of another testing device for a fuel cell humidification system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a testing apparatus of a fuel cell humidification system according to an embodiment of the present invention. As shown in fig. 1, the testing device of the fuel cell humidification system includes a gas source 21, a water source 31, a first ball valve 22, a second ball valve 32, a mass flow controller 23, a temperature sensor 24, a humidity sensor 25, a first flow meter 33, and a second flow meter 34.
The gas source 21 is in communication with an inlet of a first ball valve 22, an outlet of the first ball valve 22 is in communication with an inlet of a mass flow controller 23, and an outlet of the mass flow controller 23 is adapted to be in communication with an inlet of the fuel cell humidification system 10 to be tested.
A temperature sensor 24 and a humidity sensor 25 are provided in communication with the outlet of the fuel cell humidification system 10 to be tested.
The water source 31 communicates with an inlet of the second ball valve 32, an outlet of the second ball valve 32 communicates with an inlet of the first flow meter 33, and an outlet of the first flow meter 33 is used for communicating with a water inlet of the fuel cell humidification system 10 to be tested.
The inlet of the second flow meter 34 is adapted to communicate with the outlet of the fuel cell humidification system 10 to be tested.
Through setting up air supply, first ball valve, mass flow controller, with the import intercommunication of air supply and first ball valve, the export of first ball valve and mass flow controller's import intercommunication to can be through mass flow controller's export to the air inlet air feed of the fuel cell humidification system that awaits measuring, can accurately obtain gaseous mass flow through mass flow controller, be convenient for control to the speed of fuel cell humidification system's air feed. Through setting up the water source, the second ball valve, first flowmeter and second flowmeter, communicate the water source with the import of second ball valve, the export of second ball valve communicates with the import of first flowmeter, thereby can supply water to the fuel cell humidification system that awaits measuring, and accurately obtain the volume of supplying water through first flowmeter, communicate the delivery port of second flowmeter and the fuel cell humidification system that awaits measuring, can accurately obtain the volume of discharged water in the fuel cell humidification system that awaits measuring from awaiting measuring, can obtain the volume of consumed water according to the volume of supplying water and the volume of discharged water. Through setting up temperature sensor and humidity transducer, with the gas outlet of temperature sensor and humidity transducer and the fuel cell humidification system who awaits measuring, can detect out the temperature and the humidity of the gas after the humidification, can test fuel cell humidification system's humidification ability according to the volume of air feed, the volume of the water that consumes, the temperature and the humidity of the gas after the humidification, ensure that fuel cell humidification system can satisfy fuel cell's humidification requirement.
Alternatively, the gas source 21 may be a hydrogen source or an air source.
Fig. 2 is a schematic structural diagram of another testing device for a fuel cell humidification system according to an embodiment of the present invention. An air dryer 70 may also be connected between the air supply 21 and the inlet of the first ball valve 22, as shown in fig. 2. The desiccant in the air dryer 70 can dry the gas provided by the gas source 21, so as to prevent the original water in the gas provided by the gas source 21 from affecting the test result.
Optionally, a filter 60 may be disposed between the gas source 21 and the inlet of the first ball valve 22. The gas supplied by the gas source 21 can be filtered by the filter 60, so as to remove solid impurities, such as dust, which may be present in the gas, and prevent the problem of blockage of the equipment, such as the mass flow controller 23, after the testing device is used for a long time.
The water source 31 may be a deionized water source.
As shown in fig. 2, a filter 60 may also be provided between the water source 31 and the inlet of the second ball valve 32. The water supplied from the water source 31 is filtered by the filter 60 to remove solid impurities possibly existing therein, so as to prevent the solid impurities from damaging the first flow meter 33, the fuel cell humidification system 10 to be tested, and the like.
As shown in fig. 2, the test apparatus may also include a pressure relief valve 26. A pressure reducing valve 26 is connected between the outlet of the first ball valve 22 and the inlet of the mass flow controller 23. The pressure of the gas provided by the gas source 21 is typically high and the pressure of the gas provided by the gas source 21 can be reduced by providing a pressure reducing valve 26 to avoid damage to the mass flow controller 23 or the fuel cell humidification system 10 to be tested.
Optionally, the testing device may further comprise a first pressure sensor 27. A first pressure sensor 27 is connected to the outlet of the mass flow controller 23. From the detection of the first pressure sensor 27, the pressure of the gas discharged from the mass flow controller 23 can be accurately known, so that the gas is supplied at an appropriate pressure into the fuel cell humidification system 10. If the pressure is too low, the pressure reducing valve 26 may be adjusted to increase the pressure of the gas entering the mass flow controller 23 to increase the pressure of the gas supplied to the fuel cell humidification system 10; if the pressure is too high, the pressure reducing valve 26 may be adjusted to reduce the pressure of the gas entering the mass flow controller 23, thereby reducing the pressure of the gas supplied to the fuel cell humidification system 10.
As shown in fig. 2, the test device may also include a second pressure sensor 28. A second pressure sensor 28 is provided for connection to the outlet of the fuel cell humidification system 10 to be tested. At the time of the test, the pressure of the gas humidified by the fuel cell humidification system 10 can be accurately known from the detection by the second pressure sensor 28. The gas may change to some extent when passing through the fuel cell humidification system 10, and the change may be different for different fuel cell humidification systems 10, and the gas may need to have a certain pressure when being supplied to the fuel cell after being humidified, and according to the measurements of the first pressure sensor 27 and the second pressure sensor 28, the pressure of the inlet gas required for the humidified gas to meet the requirements of the fuel cell may be conveniently determined.
Alternatively, the first flow meter 33 and the second flow meter 34 may both be turbine flow meters. The turbine flowmeter has higher precision and higher anti-interference capability, can accurately measure the supplied water quantity and the discharged water quantity, is convenient for being connected with a computer for data processing, and can also reset the recorded flow numerical value.
As shown in fig. 2, the testing device may also include a reservoir bottle 80. The water storage bottle 80 is used for communicating with the water outlet of the fuel cell humidification system 10 to be tested, and the water storage bottle 80 is also communicated with the water source 31. The water discharged by the fuel cell humidification system 10 to be tested can be recovered through the water storage bottle 80, and the waste of the water is reduced. A de-ionized water device may be connected between the water bottle 80 and the water source 31 to de-ionize the recovered water.
Fig. 3 is a schematic structural diagram of another testing device for a fuel cell humidification system according to an embodiment of the present invention. As shown in fig. 3, the test apparatus may further include a console 40. The console 40 may be connected with the mass flow controller 23, the temperature sensor 24, the humidity sensor 25, the first flow meter 33, and the second flow meter 34. The console 40 is also adapted to be connected to the controller 11 of the fuel cell humidification system 10 to be tested. The mass flow controller 23, the temperature sensor 24, the humidity sensor 25, the first flow meter 33, and the second flow meter 34 can be controlled by the console 40. For example, the console 40 may adjust the mass flow rate of the gas entering the fuel cell humidification system 10 to be tested through the mass flow controller 23, and the console 40 may further be configured to calculate an accumulated flow rate according to the mass flow rate fed back by the mass flow controller 23, where the accumulated flow rate is a total flow rate in a period of time, and the accumulated flow rate may be manually cleared, so that a tester can know the total flow rate of the gas entering the fuel cell humidification system 10 to be tested in the whole testing process. The console 40 may obtain the total water consumed by the testing apparatus according to the data fed back by the first flow meter 33, obtain the total water consumed by the fuel cell humidification system 10 to be tested according to the data fed back by the second flow meter 34, and obtain the total water consumed by the fuel cell humidification system 10 to be tested, where the total water consumed by the testing apparatus obtained by the console 40, the total water consumed by the fuel cell humidification system 10 to be tested, and the total water consumed by the fuel cell humidification system 10 to be tested may all be manually cleared. The console 40 is connected to the controller 11 of the fuel cell humidification system 10 to be tested to adjust the operating state of the fuel cell humidification system 10 to be tested, for example, to adjust the humidity target value and the dew point temperature set value of the fuel cell humidification system 10 to be tested.
Optionally, the console 40 may have a display device, and the display device may be used to display the data detected by the temperature sensor 24, the humidity sensor 25, the first flow meter 33, the second flow meter 34, the first pressure sensor 27, and the second pressure sensor 28, so as to facilitate the tester to obtain various data.
Optionally, the testing device may further include a timer 50 for measuring the operating time of the fuel cell humidification system 10 to be tested, the timer 50 being connected to the console 40. The time length of the operation of the fuel cell humidification system 10 to be tested during the test can be accurately obtained by the timer 50, and the timer 50 can also be connected to the console 40.
Illustratively, in testing the fuel cell humidification system 10, the humidification response time, i.e., the time required from when the fuel cell humidification system 10 starts operating to when the fuel cell humidification system 10 is able to provide gas having a humidity that reaches a humidity target value, may be tested. The timing is started when the air and water are supplied to the fuel cell humidification system 10 to be tested, and the timing is stopped when the humidity detected by the humidity sensor 25 reaches the humidity target value, and the required time period is the humidification response time. The fuel cell humidification system 10 also heats water and gas introduced therein during humidification to raise the temperature of the gas after humidification, and since the required temperature may differ for different fuel cells, the temperature of the humidified gas can be detected by the temperature sensor 24 to meet the requirements of the fuel cells.
Further, since the temperature and humidity of the humidified gas have a relationship with the flow rate of water supplied to the fuel cell humidification system 10 and the mass flow rate of the gas when the fuel cell humidification system 10 is in operation, the temperature and humidity that the humidified gas can reach at different flow rates of water and gas can be detected by the mass flow controller 23, the temperature sensor 24, the humidity sensor 25, the first flow meter 33, and the second flow meter 34.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A testing device of a fuel cell humidification system is characterized by comprising an air source (21), a water source (31), a first ball valve (22), a second ball valve (32), a mass flow controller (23), a temperature sensor (24), a humidity sensor (25), a first flowmeter (33) and a second flowmeter (34),
the gas source (21) is communicated with an inlet of the first ball valve (22), an outlet of the first ball valve (22) is communicated with an inlet of the mass flow controller (23), an outlet of the mass flow controller (23) is used for being communicated with an air inlet of a fuel cell humidification system (10) to be tested,
the temperature sensor (24) and the humidity sensor (25) are used for communicating with an air outlet of the fuel cell humidification system (10) to be tested,
the water source (31) is communicated with an inlet of the second ball valve (32), an outlet of the second ball valve (32) is communicated with an inlet of the first flow meter (33), an outlet of the first flow meter (33) is used for being communicated with a water inlet of the fuel cell humidification system (10) to be tested,
the inlet of the second flowmeter (34) is used for communicating with the water outlet of the fuel cell humidification system (10) to be tested.
2. The testing device according to claim 1, further comprising a pressure relief valve (26), the pressure relief valve (26) being connected between an outlet of the first ball valve (22) and an inlet of the mass flow controller (23).
3. The testing device according to claim 1, further comprising a first pressure sensor (27), the first pressure sensor (27) being connected to an outlet of the mass flow controller (23).
4. The testing device of claim 2, further comprising a second pressure sensor (28), the second pressure sensor (28) being adapted to be connected to an air outlet of the fuel cell humidification system (10) to be tested.
5. The testing device according to claim 1, further comprising a console (40), the console (40) being connected with the mass flow controller (23), the temperature sensor (24), the humidity sensor (25), the first flow meter (33) and the second flow meter (34), the console (40) being further adapted to be connected with a controller (11) of the fuel cell humidification system (10) to be tested.
6. The testing device according to claim 5, further comprising a timer (50) for measuring an operating time period of the fuel cell humidification system (10) to be tested, the timer (50) being connected to the console (40).
7. Testing device according to claim 1, characterized in that a filter (60) is arranged between the air source (21) and the inlet of the first ball valve (22) and between the water source (31) and the inlet of the second ball valve (32), respectively.
8. A testing device according to claim 1, characterized in that an air dryer (70) is further connected between the air source (21) and the inlet of the first ball valve (22).
9. The testing device according to claim 1, wherein the first flow meter (33) and the second flow meter (34) are both turbine flow meters.
10. The testing device of claim 1, further comprising a water reservoir bottle (80), the water reservoir bottle (80) being adapted to communicate with a water outlet of the fuel cell humidification system (10) to be tested, the water reservoir bottle (80) further communicating with the water source (31).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910802509.0A CN110649290A (en) | 2019-08-28 | 2019-08-28 | Testing device for fuel cell humidification system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910802509.0A CN110649290A (en) | 2019-08-28 | 2019-08-28 | Testing device for fuel cell humidification system |
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| CN110649290A true CN110649290A (en) | 2020-01-03 |
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| CN201910802509.0A Pending CN110649290A (en) | 2019-08-28 | 2019-08-28 | Testing device for fuel cell humidification system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113921871A (en) * | 2021-10-13 | 2022-01-11 | 中氢铭创测控科技(武汉)有限公司 | Humidity detection system and method for high-power fuel cell stack reaction gas |
| CN114914487A (en) * | 2022-05-10 | 2022-08-16 | 西安交通大学 | Device and method for measuring supplied air humidity of hydrogen fuel cell test board |
-
2019
- 2019-08-28 CN CN201910802509.0A patent/CN110649290A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113921871A (en) * | 2021-10-13 | 2022-01-11 | 中氢铭创测控科技(武汉)有限公司 | Humidity detection system and method for high-power fuel cell stack reaction gas |
| CN114914487A (en) * | 2022-05-10 | 2022-08-16 | 西安交通大学 | Device and method for measuring supplied air humidity of hydrogen fuel cell test board |
| CN114914487B (en) * | 2022-05-10 | 2024-05-17 | 西安交通大学 | Device and method for measuring air supply humidity of hydrogen fuel cell test bench |
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