CN114152881A - Hydrogen fuel cell testing system - Google Patents
Hydrogen fuel cell testing system Download PDFInfo
- Publication number
- CN114152881A CN114152881A CN202111228256.4A CN202111228256A CN114152881A CN 114152881 A CN114152881 A CN 114152881A CN 202111228256 A CN202111228256 A CN 202111228256A CN 114152881 A CN114152881 A CN 114152881A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- fuel cell
- cell stack
- valve
- outlet end
- 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
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 153
- 239000001257 hydrogen Substances 0.000 title claims abstract description 147
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 147
- 239000000446 fuel Substances 0.000 title claims abstract description 130
- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000010926 purge Methods 0.000 claims abstract description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 64
- 239000007789 gas Substances 0.000 claims description 57
- 229910052757 nitrogen Inorganic materials 0.000 claims description 26
- 230000017525 heat dissipation Effects 0.000 claims description 18
- 238000005984 hydrogenation reaction Methods 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 13
- 239000002826 coolant Substances 0.000 description 10
- 239000000110 cooling liquid Substances 0.000 description 8
- 239000000376 reactant Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
- -1 that is Chemical compound 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
-
- 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
-
- 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
-
- 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
Landscapes
- 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)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fuel Cell (AREA)
Abstract
The embodiment of the invention discloses a hydrogen fuel cell testing system which comprises a fuel cell stack, a hydrogen supply system, an air supply system and a purging system, wherein the hydrogen supply system comprises a hydrogen cylinder, a first temperature and humidity exchanger, a hydrogen circulating pump and a hydrogen concentration sensor, the air outlet end of the hydrogen cylinder is communicated with the air inlet end of the first temperature and humidity exchanger, the hydrogen circulating pump and the fuel cell stack are sequentially communicated to form a first circulating loop, the hydrogen concentration sensor is communicated with the first circulating loop, the air supply system is communicated with the fuel cell stack and used for supplying air to the fuel cell stack, and the purging system is communicated with the hydrogen supply system. The hydrogen fuel cell testing system provided by the embodiment of the invention has the advantage of high safety.
Description
Technical Field
The invention relates to the technical field of testing, in particular to a hydrogen fuel cell testing system.
Background
The hydrogen energy is used as clean, pollution-free, wide-source and high-energy-storage-density secondary energy, and is widely concerned today under increasing pressure of energy crisis. The fuel cell utilizes hydrogen and oxygen to react to generate electric energy and water, and has the advantages of high power generation efficiency, small environmental pollution, high reliability and easy discharge of waste heat for recycling.
The fuel cell engine mainly comprises a fuel cell stack, a hydrogen supply system, an air supply system, a water heat management system and a control system, and the operation reliability of the fuel cell engine depends on the coordination work of all subsystems. In the actual operation process of the fuel cell engine, as the output power changes in real time according to road condition information, power matching needs to be coordinated among subsystems, repeated verification tests are carried out on an actual engine system, the enterprise burden is increased, and the system development period is prolonged. Therefore, the development and research of the testing device and the testing method for matching the fuel cell and the hydrogen supply system have great research significance for the fuel cell industry.
Disclosure of Invention
The present invention is based on the discovery and recognition by the inventors of the following facts and problems:
as the reaction of the fuel cell proceeds, part of nitrogen gas will pass through the proton exchange membrane and enter the anode, so that the hydrogen content of the anode is reduced, and the service life of the proton exchange membrane of the fuel cell is reduced; in the related art, after the hydrogen fuel cell test system finishes the test, the concentration of hydrogen in the air inside the fuel cell stack is higher, and safety accidents are easy to happen.
Therefore, the embodiment of the invention provides a hydrogen fuel cell testing system which has the advantage of high safety.
The hydrogen fuel cell test system of the embodiment of the invention comprises a fuel cell stack; the hydrogen supply system comprises a hydrogen cylinder, a first temperature-humidity exchanger, a hydrogen circulating pump and a hydrogen concentration sensor, wherein the gas outlet end of the hydrogen cylinder is communicated with the gas inlet end of the first temperature-humidity exchanger, the hydrogen circulating pump and the fuel cell stack are sequentially communicated to form a first circulating loop, the hydrogen concentration sensor is communicated with the first circulating loop, and the communication position of the hydrogen concentration sensor and the first circulating loop is positioned between the hydrogen circulating pump and the fuel cell stack; an air supply system in communication with the fuel cell stack for supplying air to the fuel cell stack; and the purging system is communicated with the hydrogen supply system and is used for introducing inert gas into the fuel cell stack to discharge hydrogen in the fuel cell stack.
The hydrogen fuel cell testing system provided by the embodiment of the invention is provided with the purging system, and after the experiment is finished, the inert gas is introduced into the fuel cell stack to discharge the hydrogen in the fuel cell stack, so that the hydrogen fuel cell testing system has the advantage of high safety.
In some embodiments, the purging system comprises a nitrogen cylinder, the gas outlet end of the hydrogen cylinder is communicated with the gas inlet end of the first temperature-humidity exchanger through a first pipeline, and the gas outlet end of the nitrogen cylinder is communicated with the first pipeline.
In some embodiments, a first control valve, a pressure reducing valve and a flow sensor are sequentially arranged in the first pipeline, the gas outlet of the nitrogen cylinder is connected with the gas outlet end of the first control valve, and a second control valve is arranged between the gas outlet of the nitrogen cylinder and the gas outlet end of the first control valve.
In some embodiments, the first control valve and the second control valve each comprise at least one of a shut-off valve and a proportional solenoid valve.
In some embodiments, the purge system further comprises a pressure relief valve, and an air inlet end of the pressure relief valve is connected with an air outlet end of the second control valve.
In some embodiments, the hydrogen fuel cell testing system further comprises a heat dissipation system coupled to the fuel cell stack for dissipating heat from the fuel cell stack.
In some embodiments, the heat dissipation system includes a heat dissipation pump and a radiator, and the heat dissipation pump, the radiator and the fuel cell stack are sequentially communicated to form a second circulation loop, the second circulation loop is connected to the hydrogen supply system, and the second circulation loop is connected to the air supply system.
In some embodiments, the hydrogen fuel cell testing system further comprises a hydrogenation pipeline, wherein a check valve, a third stop valve and a filtering device are arranged on the hydrogenation pipeline, the air outlet end of the check valve is connected with the air inlet end of the third stop valve, the air outlet end of the third stop valve is connected with the air inlet end of the filtering device, and the air outlet end of the filtering device is connected with the air outlet end of the hydrogen cylinder.
In some embodiments, the hydrogen fuel cell testing system further comprises an adjustable load coupled to the power output of the fuel cell stack.
In some embodiments, the hydrogen fuel cell testing system further comprises an electronic control system, wherein a control element is arranged in the electronic control system, and the control element is connected with the hydrogen concentration sensor and the hydrogen circulating pump.
Drawings
FIG. 1 is a block diagram of a hydrogen fuel cell testing system according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a partially enlarged view of the fuel cell stack of fig. 1.
Reference numerals:
a fuel cell stack 1; a cathode gas inlet 11; a cathode exhaust port 12; an anode gas inlet 13; an anode exhaust port 14; a coolant outlet 15; a coolant inlet 16;
a hydrogen gas supply system 2; a hydrogen gas cylinder 21; a first temperature-humidity exchanger 22; a hydrogen circulation pump 23; a hydrogen concentration sensor 24; a first proportional solenoid valve 25; a first control valve 26; a second proportional solenoid valve 27; a first cut-off valve 28; a pressure reducing valve 29; a flow sensor 210; a first circulation loop 201; a first branch 202; a first pipe 203;
a purge system 3; a nitrogen gas cylinder 31; a second control valve 32; a third proportional solenoid valve 33; a second shut-off valve 34; a pressure relief valve 35; a second branch 301; a third branch 302;
an air supply system 4; a second temperature and humidity exchanger 41; a blower 42;
a heat dissipation system 5; a heat-radiating pump 51; a heat sink 52; a second circulation loop 501;
an adjustable load 6;
a hydrogenation line 7; a check valve 71; a filter device 72; a third stop valve 73.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 3, a hydrogen fuel cell testing system of an embodiment of the present invention includes a fuel cell stack 1, a hydrogen gas supply system 2, an air supply system 4, and a purge system 3.
The hydrogen supply system 2 comprises a hydrogen cylinder 21, a first temperature-humidity exchanger 22, a hydrogen circulating pump 23 and a hydrogen concentration sensor 24, wherein the gas outlet end of the hydrogen cylinder 21 is communicated with the gas inlet end of the first temperature-humidity exchanger 22, the hydrogen circulating pump 23 and the fuel cell stack 1 are sequentially communicated to form a first circulating loop 201, the hydrogen concentration sensor 24 is communicated with the first circulating loop 201, and the communication position of the hydrogen concentration sensor 24 and the first circulating loop 201 is positioned between the hydrogen circulating pump 23 and the fuel cell stack 1.
Specifically, the hydrogen cylinders 21 are provided with an inlet end and an outlet end, the fuel cell stack 1 includes an anode and a cathode, the anode of the fuel cell stack 1 is provided with an anode exhaust port 14 for discharging anode exhaust gas of the fuel cell stack 1, and liquid hydrogen is stored in the hydrogen cylinders 21. The hydrogen circulating pump 23 is provided with an air inlet and an air outlet, the air inlet of the hydrogen circulating pump 23 is connected with the anode exhaust port 14 of the fuel cell stack 1, and the air outlet of the hydrogen circulating pump 23 is connected with the air inlet end of the first temperature-humidity exchanger 22.
Note that the inlet of the hydrogen circulation pump 23 is communicated with the anode exhaust port 14 of the fuel cell stack 1 through a pipe, a first branch 202 is provided in a pipe between the inlet of the hydrogen circulation pump 23 and the anode exhaust port 14 of the fuel cell stack 1, a hydrogen concentration sensor 24 and a first proportional solenoid valve 25 are provided in the first branch 202, and anode off gas discharged from the anode of the fuel cell stack 1 is discharged through the first branch 202.
Therefore, when the hydrogen concentration sensor 24 detects that the hydrogen concentration in the anode tail gas is low, the first proportional electromagnetic valve 25 is opened, the anode tail gas discharged from the anode of the fuel cell stack 1 is discharged through the first proportional electromagnetic valve 25, when the hydrogen concentration sensor 24 detects that the hydrogen concentration in the discharged anode tail gas is high, the first proportional electromagnetic valve 25 is closed, the hydrogen circulating pump 23 is opened, the anode tail gas containing high-concentration hydrogen is introduced into the fuel cell stack 1 again, the hydrogen in the anode tail gas is reduced, and the utilization rate of the hydrogen is improved.
The air supply system 4 communicates with the fuel cell stack 1 for supplying air to the fuel cell stack 1.
Specifically, the air supply system 4 is provided with an air inlet and an air outlet, the cathode of the fuel cell stack 1 is provided with a cathode exhaust port 12 for exhausting the cathode exhaust gas of the fuel cell stack 1 and a cathode air inlet 11 for inputting air into the fuel cell stack 1, the air supply system 4 filters the air at the air inlet and then conveys the filtered air to the air outlet of the air supply system 4, and the air outlet of the air supply system 4 is connected with the cathode air inlet 11 of the fuel cell stack 1. Thus, the air supply system 4 can introduce air into the fuel cell stack 1 as a reactant of the cathode.
In some embodiments, the air supply system 4 comprises a blower 42 and a second temperature and humidity exchanger 41, the second temperature and humidity exchanger 41 comprising a medium input, a medium output, an air input and an air output. The air outlet end of the blower 42 is communicated with the air inlet end of the second temperature-humidity exchanger 41, the air outlet end of the second temperature-humidity exchanger 41 is communicated with the cathode air inlet 11 of the fuel cell stack 1, and the medium input end of the second temperature-humidity exchanger 41 is communicated with the cathode air outlet 12 of the fuel cell stack 1.
Accordingly, the blower 42 inputs air into the second temperature-humidity exchanger 41 from the air inlet of the second temperature-humidity exchanger 41, and the cathode exhaust gas discharged from the cathode exhaust port 12 flows into the second temperature-humidity exchanger 41 through the medium inlet of the second temperature-humidity exchanger 41 and flows out of the second temperature-humidity exchanger 41 through the medium outlet of the second temperature-humidity exchanger 41. When the cathode exhaust gas of the fuel cell stack 1 passes through the second temperature and humidity exchanger 41, the heat in the cathode exhaust gas of the fuel cell stack 1 is transferred to the air flowing in from the inlet end of the second temperature and humidity exchanger 41 to heat the air to an optimum temperature, and then the air heated to the optimum temperature enters the cathode of the fuel cell stack 1 through the cathode inlet 11 to participate in the reaction as a cathode reactant.
The purging system 3 is communicated with the hydrogen supply system 2, and the purging system 3 is used for introducing inert gas into the fuel cell stack 1 to exhaust hydrogen in the fuel cell stack 1.
Specifically, the inert gas is nitrogen, that is, nitrogen is stored in the purging system 3, the purging system 3 is provided with an air outlet end, and the air outlet end of the purging system 3 is connected to the hydrogen supply system 2. After the fuel cell stack 1 is tested, the nitrogen in the purging system 3 enters the fuel cell stack 1 through at least a part of the hydrogen supply system 2. Therefore, on one hand, the purging system 3 can regularly remove the anode tail gas containing nitrogen, and the service life of the proton exchange membrane of the fuel cell is prolonged; on the other hand, after the test is finished, the gas in the fuel cell stack 1 is replaced, so that the occurrence of hydrogen leakage safety accidents is avoided.
In some embodiments, the purging system 3 includes a nitrogen gas cylinder 31, the gas outlet end of the hydrogen gas cylinder 21 is communicated with the gas inlet end of the first temperature-humidity exchanger 22 through a first pipeline 203, and the gas outlet end of the nitrogen gas cylinder 31 is communicated with the first pipeline 203.
Specifically, the nitrogen cylinder 31 stores liquid nitrogen therein, the nitrogen cylinder 31 is provided with an air inlet and an air outlet, one end of the first pipeline 203 is communicated with the air outlet end of the hydrogen cylinder 21, and the other end of the first pipeline 203 is communicated with the first temperature-humidity exchanger 22. A second branch 301 is arranged at the middle section of the first pipeline 203, one end of the second branch 301 is communicated with the first pipeline 203, and the other end of the second branch 301 is communicated with the gas outlet of the nitrogen gas cylinder 31. Thereby, the nitrogen gas in the nitrogen gas cylinder 31 enters the first pipe 203 through the second branch 301, thereby feeding the nitrogen gas into the hydrogen gas supply system 2.
In some embodiments, the first pipeline 203 is provided with a first control valve 26, a pressure reducing valve 29 and a flow sensor 210 in sequence, the gas outlet of the nitrogen gas cylinder 31 is connected with the gas outlet end of the first control valve 26, and a second control valve 32 is arranged between the gas outlet of the nitrogen gas cylinder 31 and the gas outlet end of the first control valve 26.
Specifically, the first control valve 26 is used to open and close the gas outlet end of the hydrogen cylinder 21, and the second control valve 32 is used to open and close the gas outlet of the nitrogen cylinder 31. The gas inlet end of the first control valve 26 is communicated with the gas outlet end of the hydrogen cylinder 21, the gas outlet end of the first control valve 26 is communicated with the gas inlet end of the pressure reducing valve 29, the gas inlet end of the second control valve 32 is communicated with the gas outlet of the nitrogen cylinder 31, and the gas outlet end of the second control valve 32 is communicated with the gas outlet end of the first control valve 26.
It should be noted that the first control valve 26 controls the flow of hydrogen into the hydrogen supply system 2, and the second control valve 32 controls the flow of nitrogen in the purge system 3 from the outlet of the nitrogen cylinder 31 into the hydrogen supply system 2. Both hydrogen and nitrogen gas are introduced into the first temperature and humidity exchanger 22 and the fuel cell stack 1 through the pressure reducing valve 29 and the flow sensor 210, the pressure reducing valve 29 adjusts the maximum pressure of the gas when the hydrogen and nitrogen gas pass through the pressure reducing valve 29 and the flow sensor 210, so that the hydrogen and nitrogen gas are introduced into the first temperature and humidity exchanger 22 and the fuel cell stack 1 at an appropriate pressure, and the flow sensor 210 detects the flow of the nitrogen and hydrogen gas introduced into the first temperature and humidity exchanger 22 and the fuel cell stack 1.
Thereby, on the one hand, the pressure reducing valve 29 is able to regulate the maximum pressure of the gas entering the first circulation circuit 201, and thus the maximum pressure of the gas entering the fuel cell stack 1; on the other hand, the flow sensor 210 can monitor the amount of hydrogen and nitrogen entering the fuel cell stack 1, and can obtain accurate information on the input amount of reactants when testing the hydrogen fuel cell.
In some embodiments, the first control valve 26 includes at least one of a first shutoff valve 28 and a second proportional solenoid valve 27, and the second control valve 32 includes at least one of a second shutoff valve 34 and a third proportional solenoid valve 33.
Specifically, the first control valve 26 is provided with an inlet end and an outlet end, and the second control valve 32 is provided with an inlet end and an outlet end. A first stop valve 28 is arranged at the air inlet end of the first control valve 26, and a second proportional solenoid valve 27 is arranged at the air outlet end of the first control valve 26; the air inlet end of the second control valve 32 is provided with a second stop valve 34, and the air outlet end of the second control valve 32 is provided with a third proportional solenoid valve 33. Thus, the first stop valve 28 that is opened and closed manually can be regarded as the manual safety of the second proportional solenoid valve 27, and the second stop valve 34 that is opened and closed manually can be regarded as the manual safety of the third proportional solenoid valve 33. Thereby reducing the risk of leakage of the hydrogen supply system 2 and the purge system 3 and improving safety.
In some embodiments, the purging system 3 further comprises a pressure relief valve 35, and an inlet end of the pressure relief valve 35 is connected to an outlet end of the second control valve 32.
Specifically, a third branch 302 is arranged in the middle section of the second branch 301, one end of the third branch 302 is communicated with the second branch 301, and the other end of the third branch 302 is communicated with the air inlet of the pressure release valve 35. Thus, the second branch 301 is communicated with the third branch 302, when the high-pressure nitrogen stored in the nitrogen cylinder 31 flows through the second branch 301, the pressure in the third branch 302 is the same as that in the second branch 301, and the pressure relief valve 35 is automatically opened when the pressure of the nitrogen in the second branch 301 and the third branch 302 is too high, so as to limit the highest pressure of the nitrogen in the second branch 301 when the purging system 3 is working, therefore, when the purging system 3 is working, the pressure of the nitrogen in the second branch 301 and the hydrogen supply system 2 is always lower than the maximum allowable pressure of the hydrogen supply system 2, and the safety when the purging system 3 is working is improved.
In some embodiments, the hydrogen fuel cell testing system further comprises a heat dissipation system 5, and the heat dissipation system 5 is connected to the fuel cell stack 1 to dissipate heat of the fuel cell stack 1.
Specifically, distilled water is used as a cooling liquid in the fuel cell stack 1, the fuel cell stack 1 is provided with a cooling liquid inlet 16 and a cooling liquid outlet 15, one end of the heat dissipation system 5 is communicated with the cooling liquid inlet 16, and the other end of the heat dissipation system 5 is communicated with the cooling liquid outlet 15. Thereby, the coolant flows into the heat dissipation system 5 from the coolant outlet 15, and enters the fuel cell stack 1 from the coolant inlet 16, thereby taking excess heat in the fuel cell stack 1 out and dissipating the heat of the coolant in the air through the heat dissipation system 5.
In some embodiments, the heat dissipation system 5 includes a heat dissipation pump 51 and a radiator 52, the heat dissipation pump 51, the radiator 52 and the fuel cell stack 1 are sequentially communicated to form a second circulation loop 501, the second circulation loop 501 is connected to the hydrogen supply system 2, and the second circulation loop 501 is connected to the air supply system 4.
Specifically, an inlet of the heat-radiating pump 51 communicates with the coolant outlet 15, an outlet of the heat-radiating pump 51 communicates with an inlet of the radiator 52, and an outlet of the radiator 52 communicates with the coolant inlet 16. The coolant circulates through the fuel cell stack 1, the radiator pump 51, and the radiator 52 in this order. The outlet of the heat-radiating pump 51 is communicated with the first temperature-humidity exchanger 22, and the coolant is used as a heating and humidifying medium of the first temperature-humidity exchanger 22 to heat and humidify the hydrogen flowing through the first temperature-humidity exchanger 22. The outlet of the heat-radiating pump 51 is also communicated with the second temperature-humidity exchanger 41, and the cooling liquid is used as a humidifying medium of the second temperature-humidity exchanger 41 to humidify the air flowing through the second temperature-humidity exchanger 41.
Thus, the used cooling liquid heats and humidifies the hydrogen and the air flowing into the fuel cell stack 1, on one hand, the heat generated in the fuel cell stack 1 is recycled, on the other hand, the water in the reaction products in the fuel cell stack 1 is injected into the cooling liquid to be used as a humidifying agent of the reactants of the fuel cell stack 1, and the recycling of the products is realized.
In some embodiments, the hydrogen fuel cell testing system further includes a hydrogenation pipeline 7, the hydrogenation pipeline 7 is provided with a check valve 71, a third stop valve 73 and a filtering device 72, an air outlet end of the check valve 71 is connected with an air inlet end of the third stop valve 73, an air outlet end of the third stop valve 73 is connected with an air inlet end of the filtering device 72, and an air outlet end of the filtering device 72 is connected with an air outlet end of the hydrogen cylinder 21.
Specifically, the hydrogenation pipeline 7 is provided with an air inlet end and an air outlet end, the air inlet end of the hydrogenation pipeline 7 is connected with a stable hydrogen source, the air outlet end of the hydrogenation pipeline 7 is connected with the first pipeline 203, the check valve 71 is provided with an air inlet end and an air outlet end, the air inlet end of the check valve 71 is the air inlet end of the hydrogenation pipeline 7, the air outlet end of the check valve 71 is connected with the air inlet end of the third stop valve 73, the air outlet end of the third stop valve 73 is connected with the air inlet end of the filtering device 72, and the air outlet end of the filtering device 72 is the air outlet end of the hydrogenation pipeline 7.
It should be noted that the hydrogenation circuit 7 is used to provide hydrogen gas for the hydrogen fuel cell testing system through an independent hydrogen source when the hydrogen cylinder 21 cannot provide a stable hydrogen gas flow. The check valve 71 has the function of one-way conduction and reverse blocking, so that the hydrogenation pipeline 7 can only add hydrogen into the hydrogen supply system 2, and the gas in the hydrogen supply system 2 is prevented from leaking from the hydrogenation pipeline 7.
Therefore, when the hydrogen cylinder 21 is replaced, the hydrogenation pipeline 7 replaces the hydrogen cylinder 21 and leads air into the fuel cell stack 1 through at least one part of the hydrogen supply system 2, and the stability of hydrogen supply is improved when the hydrogen fuel cell test system works.
In some embodiments, the hydrogen fuel cell testing system further comprises an adjustable load 6, and the adjustable load 6 is connected to the power supply output terminal of the fuel cell stack 1.
Specifically, a power output end is arranged in the fuel cell stack 1, the power output end is used for modulating electric energy generated in the fuel cell stack 1 and outputting the modulated electric energy as a power supply, the adjustable load 6 is connected with the power output end of the fuel cell stack 1, and the adjustable load 6 is used for testing the efficiency of the fuel cell stack 1 under different load working conditions by using the fuel cell stack 1 as the power supply.
In some embodiments, the hydrogen fuel cell testing system further comprises an electronic control system, wherein a control part is arranged in the electronic control system, and the control part is connected with the hydrogen concentration sensor 24 and the hydrogen circulating pump 23.
Specifically, the electronic control system includes a control element and an electric circuit (not shown in the figure), and the control element is connected with at least a part of the hydrogen concentration sensor 24, the first proportional solenoid valve 25, the second proportional solenoid valve 27, the flow sensor 210, the third proportional solenoid valve 33, the heat dissipation pump 51 and the hydrogen circulation pump 23 in any of the above embodiments through the electric circuit. Therefore, the electric control system is suitable for detecting the working conditions of all parts of the hydrogen fuel cell test system during working and controlling the hydrogen fuel cell test system according to the working conditions of all parts of the hydrogen fuel cell test system.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A hydrogen fuel cell testing system, comprising:
a fuel cell stack;
the hydrogen supply system comprises a hydrogen cylinder, a first temperature-humidity exchanger, a hydrogen circulating pump and a hydrogen concentration sensor, wherein the gas outlet end of the hydrogen cylinder is communicated with the gas inlet end of the first temperature-humidity exchanger, the hydrogen circulating pump and the fuel cell stack are sequentially communicated to form a first circulating loop, the hydrogen concentration sensor is communicated with the first circulating loop, and the communication position of the hydrogen concentration sensor and the first circulating loop is positioned between the hydrogen circulating pump and the fuel cell stack;
an air supply system in communication with the fuel cell stack for supplying air to the fuel cell stack;
and the purging system is communicated with the hydrogen supply system and is used for introducing inert gas into the fuel cell stack to discharge hydrogen in the fuel cell stack.
2. The hydrogen fuel cell testing system of claim 1, wherein the purging system comprises a nitrogen cylinder, the gas outlet end of the hydrogen cylinder is communicated with the gas inlet end of the first temperature-humidity exchanger through a first pipeline, and the gas outlet end of the nitrogen cylinder is communicated with the first pipeline.
3. The hydrogen fuel cell testing system of claim 2, wherein a first control valve, a pressure reducing valve and a flow sensor are sequentially arranged in the first pipeline, the gas outlet of the nitrogen cylinder is connected with the gas outlet end of the first control valve, and a second control valve is arranged between the gas outlet of the nitrogen cylinder and the gas outlet end of the first control valve.
4. The hydrogen fuel cell testing system of claim 3, wherein the first control valve and the second control valve each comprise at least one of a shut-off valve and a proportional solenoid valve.
5. The hydrogen fuel cell testing system of claim 3, wherein the purging system further comprises a pressure relief valve, and an inlet end of the pressure relief valve is connected to an outlet end of the second control valve.
6. The hydrogen fuel cell testing system of claim 1 further comprising a heat removal system coupled to the fuel cell stack for removing heat from the fuel cell stack.
7. The hydrogen fuel cell testing system according to claim 6, wherein the heat dissipation system comprises a heat dissipation pump and a heat sink, the heat dissipation pump, the heat sink and the fuel cell stack are sequentially communicated to form a second circulation loop, the second circulation loop is connected to the hydrogen gas supply system, and the second circulation loop is connected to the air supply system.
8. The hydrogen fuel cell testing system according to any one of claims 1 to 7, further comprising a hydrogenation pipeline, wherein a check valve, a third stop valve and a filtering device are arranged on the hydrogenation pipeline, an air outlet end of the check valve is connected with an air inlet end of the third stop valve, an air outlet end of the third stop valve is connected with an air inlet end of the filtering device, and an air outlet end of the filtering device is connected with an air outlet end of the hydrogen cylinder.
9. The hydrogen fuel cell testing system according to any one of claims 1-7, further comprising an adjustable load connected to a power output of the fuel cell stack.
10. The hydrogen fuel cell testing system according to any one of claims 1 to 7, further comprising an electronic control system in which a control member is provided, the control member being connected to the hydrogen concentration sensor and the hydrogen circulation pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111228256.4A CN114152881A (en) | 2021-10-21 | 2021-10-21 | Hydrogen fuel cell testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111228256.4A CN114152881A (en) | 2021-10-21 | 2021-10-21 | Hydrogen fuel cell testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114152881A true CN114152881A (en) | 2022-03-08 |
Family
ID=80458501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111228256.4A Pending CN114152881A (en) | 2021-10-21 | 2021-10-21 | Hydrogen fuel cell testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114152881A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006061194A1 (en) * | 2004-12-08 | 2006-06-15 | Renault S.A.S. | Purge management in fuel cell power plants |
| CN109411784A (en) * | 2018-12-11 | 2019-03-01 | 中国重汽集团济南动力有限公司 | A kind of commercial vehicle fuel battery engines air supply system |
| CN109768302A (en) * | 2018-12-29 | 2019-05-17 | 北京建筑大学 | A kind of fuel battery test system and working method with waste heat recovery plant |
| CN110931829A (en) * | 2019-12-06 | 2020-03-27 | 吉林大学 | Fuel cell cold start system with purging device and control method |
| CN111082093A (en) * | 2019-12-27 | 2020-04-28 | 武汉理工大学 | Hydrogen fuel cell stack durability test system and method |
| CN112701326A (en) * | 2021-01-06 | 2021-04-23 | 武汉理工大学 | Fuel cell stack durability accelerated test method and durability accelerated test device |
| CN113161579A (en) * | 2021-04-01 | 2021-07-23 | 中汽研汽车检验中心（天津）有限公司 | Multifunctional proton exchange membrane fuel cell component in-loop test bench |
-
2021
- 2021-10-21 CN CN202111228256.4A patent/CN114152881A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006061194A1 (en) * | 2004-12-08 | 2006-06-15 | Renault S.A.S. | Purge management in fuel cell power plants |
| CN109411784A (en) * | 2018-12-11 | 2019-03-01 | 中国重汽集团济南动力有限公司 | A kind of commercial vehicle fuel battery engines air supply system |
| CN109768302A (en) * | 2018-12-29 | 2019-05-17 | 北京建筑大学 | A kind of fuel battery test system and working method with waste heat recovery plant |
| CN110931829A (en) * | 2019-12-06 | 2020-03-27 | 吉林大学 | Fuel cell cold start system with purging device and control method |
| CN111082093A (en) * | 2019-12-27 | 2020-04-28 | 武汉理工大学 | Hydrogen fuel cell stack durability test system and method |
| CN112701326A (en) * | 2021-01-06 | 2021-04-23 | 武汉理工大学 | Fuel cell stack durability accelerated test method and durability accelerated test device |
| CN113161579A (en) * | 2021-04-01 | 2021-07-23 | 中汽研汽车检验中心（天津）有限公司 | Multifunctional proton exchange membrane fuel cell component in-loop test bench |
Non-Patent Citations (1)
| Title |
|---|
| 陶诗涌 等: "多功能燃料电池测试平台的设计与开发", 《东方电气评论》, vol. 25, no. 4, 25 December 2011 (2011-12-25), pages 13 - 19 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102005053698B4 (en) | System and method for drying a fuel cell stack at system shutdown | |
| EP2517293B1 (en) | Management of operation of a pem fuel cell stack back-up electric generator | |
| CN112635793B (en) | Double-stack double-circulation fuel cell system | |
| JP3823181B2 (en) | Fuel cell power generation system and waste heat recirculation cooling system for power generation system | |
| JPS6016705B2 (en) | Fuel cell device and its operation method | |
| DE112006000867T5 (en) | Procedure for starting coolant circulation to prevent MEA overheating during cold start | |
| CN114068997B (en) | High-efficiency energy-saving fuel cell stack test system | |
| CN114068986B (en) | Solid alloy hydrogen storage and multi-stack fuel cell thermal management system | |
| US20040091761A1 (en) | Fuel cell and method of controlling same | |
| CN217955921U (en) | Purging control device for fuel cell system | |
| CN113097535A (en) | Water heat management system of self-humidifying fuel cell and control method thereof | |
| US7261960B2 (en) | Apparatus and method for internal stack temperature control | |
| US8962203B2 (en) | Fuel cell system and method of operating the system outside of desired thermal operating conditions | |
| CN114152881A (en) | Hydrogen fuel cell testing system | |
| US7846603B2 (en) | Coolant reservoir purge system for fuel cell systems and vehicles | |
| US7919209B2 (en) | System stability and performance improvement with anode heat exchanger plumbing and re-circulation rate | |
| CN112751058B (en) | Performance recovery device and control method thereof | |
| CN114024004A (en) | Fuel cell cold start device, control method thereof and vehicle | |
| CN217060440U (en) | Hydrogen fuel cell test system | |
| CN114447474A (en) | Power battery thermal management system and method thereof | |
| CN112993321A (en) | Cooling liquid circulating system for fuel cell | |
| CN101079484B (en) | Fuel cell system with the moisture-making device at the end reaction gas exhaust pipe | |
| CN217134432U (en) | Fuel cell offline testing equipment | |
| CN110190300A (en) | The control system and its control method of fuel cell | |
| CN220155570U (en) | Fuel cell system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |