Test system of hydrogen purification membrane electrode

Abstract

The invention provides a test system of a hydrogen purification membrane electrode. A first end of a gas mixing device in the system is connected with an anode hydrogen inlet pipeline through a first mass flow controller, connected with an anode nitrogen inlet pipeline through a second mass flow controller and connected with an anode ammonia inlet pipeline through a first electromagnetic valve and a third mass flow controller; the anode air inlet is connected with the battery through a first electromagnetic valve and a second electromagnetic valve; the second end of the gas mixing device is connected with an anode gas inlet of the battery through a third electromagnetic valve and connected with the first end of the first humidifying device through a fourth electromagnetic valve, and the second end of the first humidifying device is connected with the anode gas inlet of the battery; a cathode gas outlet of the battery is connected with the gas detection interface through the cathode tail gas treatment device, so that the concentration of hydrogen in gas discharged from the gas detection interface is detected through gas detection equipment, and the performance of the hydrogen purification membrane electrode in the battery is tested.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen purification membrane electrode testing, and in particular to a hydrogen purification membrane electrode testing system. Background Art

[0002] Hydrogen energy plays a key role in promoting green energy transformation and has great potential. Hydrogen fuel cells, as an efficient and environmentally friendly hydrogen-electricity conversion device, have been successfully demonstrated and applied in commercial vehicles and other fields due to their significant advantages such as high energy storage density, strong power output and zero emissions. However, the storage and transportation problems of hydrogen, as well as its safety issues, have become bottlenecks that limit the widespread use of fuel cells in the vehicle field.

[0003] Ammonia, as a compound rich in hydrogen, has become a very potential candidate for hydrogen storage due to its excellent hydrogen storage capacity, high-quality energy density, low storage and transportation costs, and high safety. Hydrogen is transported in the form of liquid ammonia and extracted through ammonia cracking technology when needed.

[0004] However, the residual ammonia produced during the cracking of ammonia will have an adverse effect on the performance of the fuel cell, which requires us to adopt advanced hydrogen separation and purification technologies. Although technologies such as pressure swing adsorption and palladium membrane separation are relatively mature in the industry, their high cost, lack of durability and high energy consumption make them unsuitable for direct application in vehicle-mounted systems. In contrast, the electrochemical separation and purification technology of hydrogen has become an ideal choice for vehicle-mounted ammonia hydrogen devices with its compact size, excellent flux, fast dynamic response capability and long-term stable performance.

[0005] In order to further achieve efficient separation and purification of hydrogen, we urgently need to develop efficient and ammonia corrosion-resistant hydrogen purification membrane electrode assemblies. To this end, it is crucial to invent a test system specifically for ammonia-hydrogen conversion and hydrogen purification hydrogen purification membrane electrode. Summary of the invention

[0006] The present invention aims to solve the technical problems in the related art to a certain extent.

[0007] To this end, the purpose of the present invention is to provide a test system for a hydrogen purification membrane electrode, which can detect the concentration of hydrogen in the gas discharged from the gas detection interface through a gas detection device, thereby testing the performance of the hydrogen purification membrane electrode in the battery.

[0008] To achieve the above-mentioned purpose, an embodiment of the present invention proposes a test system for a hydrogen purification membrane electrode, comprising: an anode hydrogen inlet pipeline, an anode nitrogen inlet pipeline, an anode ammonia inlet pipeline, a first mass flow controller, a second mass flow controller, a third mass flow controller, a first solenoid valve to a fourth solenoid valve, a gas mixing device, a first humidifying device, a cathode tail gas treatment device and a gas detection interface; wherein the first end of the gas mixing device is connected to the anode hydrogen inlet pipeline through the first mass flow controller, connected to the anode nitrogen inlet pipeline through the second mass flow controller, connected to the cathode tail gas through the first solenoid valve and the third mass flow controller, respectively. The flow controller is connected to the anode ammonia inlet pipeline, and is connected to the anode air inlet of the battery through the first solenoid valve and the second solenoid valve; the second end of the gas mixing device is connected to the anode air inlet of the battery through the third solenoid valve, and is connected to the first end of the first humidifying device through the fourth solenoid valve, and the second end of the first humidifying device is connected to the anode air inlet of the battery; the cathode gas outlet of the battery is connected to the gas detection interface through the cathode tail gas treatment device, so as to detect the concentration of hydrogen in the gas discharged from the gas detection interface through the gas detection equipment, so as to realize the test of the performance of the hydrogen purification membrane electrode in the battery.

[0009] The test system of the hydrogen purification membrane electrode of the embodiment of the present invention comprises an anode hydrogen inlet pipeline, an anode nitrogen inlet pipeline, an anode ammonia inlet pipeline, a first mass flow controller, a second mass flow controller, a third mass flow controller, first to fourth solenoid valves, a gas mixing device, a first humidifying device, a cathode tail gas treatment device and a gas detection interface; wherein the first end of the gas mixing device is connected to the anode hydrogen inlet pipeline through the first mass flow controller, connected to the anode nitrogen inlet pipeline through the second mass flow controller, connected to the anode ammonia inlet pipeline through the first solenoid valve and the third mass flow controller, and connected to the anode air inlet of the battery through the first solenoid valve and the second solenoid valve; the second end of the gas mixing device is connected to the anode air inlet of the battery through the third solenoid valve, and connected to the first end of the first humidifying device through the fourth solenoid valve, and the second end of the first humidifying device is connected to the anode air inlet of the battery; the cathode outlet of the battery is connected to the gas detection interface through the cathode tail gas treatment device, so that the concentration of hydrogen in the gas discharged from the gas detection interface is detected by the gas detection device, thereby realizing the test of the performance of the hydrogen purification membrane electrode in the battery.

[0010] In addition, the test system for the hydrogen purification membrane electrode provided in the embodiment of the present invention may also have the following additional technical features:

[0011] According to one embodiment of the present invention, the process of adjusting the type and ratio of the gas entering the mixing device to obtain the target mixed gas includes:

[0012] Under the condition that the first solenoid valve is opened, the second solenoid valve is closed, the third solenoid valve is closed and the fourth solenoid valve is opened, hydrogen, nitrogen and ammonia enter the mixing device through the corresponding anode hydrogen inlet pipeline, the anode nitrogen inlet pipeline and the anode ammonia inlet pipeline to be mixed, then enter the first humidifying device for humidification treatment, and then enter the battery through the anode air inlet of the battery;

[0013] Under the condition that the first solenoid valve is opened, the second solenoid valve is closed, the third solenoid valve is opened and the fourth solenoid valve is closed, hydrogen, nitrogen and ammonia enter the mixing device through the corresponding anode hydrogen intake pipeline, the anode nitrogen intake pipeline and the anode ammonia intake pipeline to mix, and then enter the battery through the anode intake port of the battery;

[0014] Under the condition that the first solenoid valve is closed, the second solenoid valve is opened, the third solenoid valve is closed and the fourth solenoid valve is opened, hydrogen and nitrogen enter the mixing device through the corresponding anode hydrogen intake pipeline and the anode nitrogen intake pipeline to be mixed, and then pass through the first humidifying device for humidification treatment, and then enter the interior of the battery through the anode air inlet of the battery, and ammonia enters the interior of the battery through the anode ammonia intake pipeline and the anode air inlet of the battery in turn.

[0015] According to one embodiment of the present invention, the system further comprises: a cathode air intake pipeline, a fourth mass flow controller, a fifth solenoid valve, a sixth solenoid valve and a second humidifying device; wherein,

[0016] The cathode air inlet pipeline is connected to the cathode air inlet of the battery through the fourth mass flow controller and the fifth solenoid valve, and is connected to the first end of the second humidifying device through the fourth mass flow controller and the sixth solenoid valve, and the second end of the second humidifying device is connected to the cathode air inlet of the battery;

[0017] The state of the gas entering the cathode gas inlet of the battery is adjusted by controlling the opening and closing states of the fifth solenoid valve and the sixth solenoid valve.

[0018] According to one embodiment of the present invention, the method of adjusting the state of the gas entering the cathode air inlet of the battery by controlling the opening and closing states of the fifth solenoid valve and the sixth solenoid valve includes:

[0019] When the fifth solenoid valve is opened and the sixth solenoid valve is closed, the gas entering the cathode air inlet of the battery is not humidified;

[0020] Under the condition that the fifth solenoid valve is closed and the sixth solenoid valve is opened, the gas entering the cathode air inlet of the battery is humidified by the second humidifying device.

[0021] According to one embodiment of the present invention, the gas in the cathode air inlet pipeline is hydrogen or argon.

[0022] According to one embodiment of the present invention, the system further comprises: a cathode exhaust port, a seventh solenoid valve, an eighth solenoid valve and a fifth mass flow controller; wherein,

[0023] The output port of the cathode tail gas treatment device is connected to the cathode exhaust port through the seventh solenoid valve, and is connected to the gas detection interface through the eighth solenoid valve and the fifth mass flow controller;

[0024] The flow path of the gas at the cathode outlet of the battery is determined by controlling the switch states of the seventh solenoid valve and the eighth solenoid valve.

[0025] According to one embodiment of the present invention, the method of determining the flow path of the cathode gas outlet of the battery by controlling the switch states of the seventh solenoid valve and the eighth solenoid valve includes:

[0026] When the seventh solenoid valve is closed and the eighth solenoid valve is opened, the gas at the cathode gas outlet of the battery is exhausted through the cathode exhaust port;

[0027] When the seventh solenoid valve is opened and the eighth solenoid valve is closed, the gas at the cathode outlet of the battery is sent to the gas detection device through the gas detection interface to detect the concentration of hydrogen in the gas discharged from the gas detection interface.

[0028] According to one embodiment of the present invention, the system further comprises: an anode exhaust port and an anode tail gas treatment device; wherein,

[0029] The anode gas outlet of the battery is connected to the anode exhaust port through the anode tail gas treatment device.

[0030] According to one embodiment of the present invention, the system further comprises:

[0031] A power module is used to supply power to the battery to support the hydrogen purification membrane electrode in the battery to perform an electrolytic hydrogen purification process.

[0032] According to one embodiment of the present invention, the system further comprises:

[0033] An ammonia concentration detection device, used to detect the concentration of ammonia inside the battery;

[0034] A hydrogen concentration detection device, used to detect the concentration of hydrogen inside the battery;

[0035] Wherein, when the concentration of ammonia gas inside the battery and / or the concentration of hydrogen gas inside the battery exceeds the respective set safety concentrations, an audible and / or optical alarm signal is issued.

[0036] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0038] Figure 1 Schematic diagram of a test system for a hydrogen purification membrane electrode according to an embodiment of the present invention.

[0039] As shown in the figure:

[0040] 11. a first mass flow controller; 12. a second mass flow controller; 13. a third mass flow controller; 14. a fourth mass flow controller;

[0041] 21. First solenoid valve; 22. Second solenoid valve; 23. Third solenoid valve; 24. Fourth solenoid valve; 25. Fifth solenoid valve; 26. Sixth solenoid valve; 27. Seventh solenoid valve; 28. Eighth solenoid valve;

[0042] 3. Gas mixing device; 31. Cathode tail gas treatment device; 32. Anode tail gas treatment device; 33. Cathode back pressure control valve; 34. Anode back pressure control valve;

[0043] 41. a first humidifying device; 42. a second humidifying device;

[0044] 51. A first pressure sensor; 52. A second pressure sensor; 53. A third pressure sensor; 54. A fourth pressure sensor;

[0045] 61. A first temperature sensor; 62. A second temperature sensor; 63. A third temperature sensor; 64. A fourth temperature sensor;

[0046] 7. Battery; 71. Anode gas inlet of the battery; 72. Cathode gas inlet of the battery; 73. Anode gas outlet of the battery; 74. Cathode gas outlet of the battery;

[0047] 10. Power module. DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0049] The following describes a test system for a hydrogen purification membrane electrode according to an embodiment of the present invention with reference to the accompanying drawings.

[0050] Figure 1 Schematic diagram of a test system for a hydrogen purification membrane electrode according to an embodiment of the present invention.

[0051] like Figure 1 As shown, the test system of the hydrogen purification membrane electrode according to the embodiment of the present invention includes: an anode hydrogen inlet pipeline, an anode nitrogen inlet pipeline, an anode ammonia inlet pipeline, a first mass flow controller 11, a second mass flow controller 12, a third mass flow controller 13, a first solenoid valve 21 to a fourth solenoid valve 24, a gas mixing device 3, a first humidifying device 41, an anode tail gas treatment device 32 and a gas detection interface.

[0052] Among them, the first end of the mixing device 3 is connected to the anode hydrogen inlet pipeline through the first mass flow controller 11, connected to the anode nitrogen inlet pipeline through the second mass flow controller 12, connected to the anode ammonia inlet pipeline through the first solenoid valve 21 and the third mass flow controller 13, and connected to the anode air inlet 71 of the battery 7 through the first solenoid valve 21 and the second solenoid valve 22; the second end of the mixing device 3 is connected to the anode air inlet 71 of the battery 7 through the third solenoid valve 23, and connected to the first end of the first humidifying device 41 through the fourth solenoid valve 24, and the second end of the first humidifying device 41 is connected to the anode air inlet 71 of the battery 7; the cathode outlet 74 of the battery 7 is connected to the gas detection interface through the anode tail gas treatment device 32, so that the concentration of hydrogen in the gas discharged from the gas detection interface is detected by the gas detection equipment, so as to realize the test of the performance of the hydrogen purification membrane electrode in the battery 7.

[0053] In the embodiment of the present invention, the type and proportion of gas entering the mixing device can be adjusted by controlling the opening and closing states of the first mass flow controller 11, the second mass flow controller 12 and the third mass flow controller 13, and the first solenoid valve 21, the second solenoid valve 22 and the third solenoid valve 23 to obtain the target mixed gas. The specific process includes:

[0054] When the three gases of hydrogen, nitrogen and ammonia need to be humidified, the first solenoid valve 21 is controlled to be opened, the second solenoid valve 22 is closed, the third solenoid valve 23 is closed and the fourth solenoid valve 24 is controlled to be opened, hydrogen enters the gas mixing device 3 through the anode hydrogen gas inlet pipeline and the first mass flow controller 11 in sequence, nitrogen enters the gas mixing device 3 through the anode nitrogen gas inlet pipeline and the second mass flow controller 12 in sequence, and ammonia enters the gas mixing device 3 through the anode ammonia gas inlet pipeline and the third mass flow controller 13 in sequence, and the three gases are mixed evenly after the gas mixing device 3 and enter the first humidifying device 41 for humidification treatment, and then enter the battery 7 through the anode gas inlet 71 of the battery 7;

[0055] When it is necessary that none of the three gases, hydrogen, nitrogen and ammonia, are humidified, the first solenoid valve 21 is controlled to be opened, the second solenoid valve 22 is controlled to be closed, the third solenoid valve 23 is controlled to be opened and the fourth solenoid valve 24 is controlled to be closed, and hydrogen enters the gas mixing device 3 through the anode hydrogen gas inlet pipeline and the first mass flow controller 11 in sequence, nitrogen enters the gas mixing device 3 through the anode nitrogen gas inlet pipeline and the second mass flow controller 12 in sequence, and ammonia enters the gas mixing device 3 through the anode ammonia gas inlet pipeline and the third mass flow controller 13 in sequence for mixing, and these three gases are evenly mixed after the gas mixing device 3 and directly enter the interior of the battery 7 through the anode gas inlet 71 of the battery 7;

[0056] When hydrogen and nitrogen need to be humidified but ammonia is not humidified, the first solenoid valve 21 is controlled to be closed, the second solenoid valve 22 is controlled to be opened, the third solenoid valve 23 is controlled to be closed and the fourth solenoid valve 24 is controlled to be opened, and hydrogen enters the mixing device 3 through the anode hydrogen intake pipeline and the first mass flow controller 11 in turn, and nitrogen enters the mixing device 3 through the anode nitrogen intake pipeline and the second mass flow controller 12 in turn, and the hydrogen and nitrogen are uniformly mixed after the mixing device 3 and then enter the first humidifying device 41 for humidification treatment, and then the humidified ammonia and nitrogen enter the battery 7 through the anode intake port 71 of the battery 7, and the ammonia directly enters the battery 7 after passing through the anode ammonia intake pipeline and the third mass flow controller 13 in turn, and the humidified ammonia and nitrogen are mixed with the unhumidified ammonia inside the battery 7.

[0057] It should be noted that the present invention may also provide a first pressure sensor 51 and a first temperature sensor 61 on a pipeline close to the anode air inlet 71 of the battery 7 to obtain the pressure and temperature of the gas entering the battery 7 through the anode air inlet 71 .

[0058] According to one embodiment of the present invention, the above-mentioned system also includes: a cathode air inlet pipeline, a fourth mass flow controller 14, a fifth solenoid valve 25, a sixth solenoid valve 26 and a second humidifying device 42; wherein the cathode air inlet pipeline is connected to the cathode air inlet 72 of the battery 7 through the fourth mass flow controller 14 and the fifth solenoid valve 25, and is connected to the first end of the second humidifying device 42 through the fourth mass flow controller 14 and the sixth solenoid valve 26, and the second end of the second humidifying device 42 is connected to the cathode air inlet 72 of the battery 7; by controlling the opening and closing states of the fifth solenoid valve 25 and the sixth solenoid valve 26, the gas state entering the cathode air inlet 72 of the battery 7 is adjusted.

[0059] In the embodiment of the present invention, after the cathode gas (such as hydrogen or argon) passes through the cathode air inlet pipeline, the gas flow rate input into the battery 7 is controlled by the fourth mass flow controller 14. When the fifth solenoid valve 25 is opened and the sixth solenoid valve 26 is closed, the gas entering the cathode air inlet 72 of the battery 7 is not humidified; when the fifth solenoid valve 25 is closed and the sixth solenoid valve 26 is opened, the gas entering the cathode air inlet 72 of the battery 7 is humidified by the second humidifying device 42. It should be noted that the present invention can also control the fifth solenoid valve 25 and the sixth solenoid valve 26 to be closed, that is, control the cathode to have no gas inside the battery 7.

[0060] It should also be noted that the present invention can also set a second pressure sensor 52 and a second temperature sensor 62 on the pipeline close to the cathode air inlet 72 of the battery 7 to obtain the pressure and temperature of the gas entering the battery 7 through the cathode air inlet 72.

[0061] According to one embodiment of the present invention, the above-mentioned system also includes: a cathode exhaust port, a seventh solenoid valve 27, an eighth solenoid valve 28 and a fifth mass flow controller 15; wherein the output port of the cathode exhaust gas treatment device 31 is connected to the cathode exhaust port through the seventh solenoid valve 27, and is connected to the gas detection interface through the eighth solenoid valve 28 and the fifth mass flow controller 15; by controlling the switching states of the seventh solenoid valve 27 and the eighth solenoid valve 28, the flow path of the gas at the cathode outlet 74 of the battery 7 is determined.

[0062] In an embodiment of the present invention, when the seventh solenoid valve 27 is closed and the eighth solenoid valve 28 is opened, the gas at the cathode gas outlet 74 of the battery 7 is exhausted through the cathode exhaust port; when the seventh solenoid valve 27 is opened and the eighth solenoid valve 28 is closed, the gas at the cathode gas outlet 74 of the battery 7 is sent to the gas detection device through the gas detection interface to detect the concentration of hydrogen in the gas discharged from the gas detection interface.

[0063] According to one embodiment of the present invention, the system further comprises: an anode exhaust port and an anode tail gas treatment device 32 ; wherein the anode gas outlet 73 of the battery 7 is connected to the anode exhaust port through the anode tail gas treatment device 32 .

[0064] According to one embodiment of the present invention, the system further comprises: a power module 10, which is used to supply power to the battery 7 to support the hydrogen purification membrane electrode in the battery 7 to perform an electrolytic hydrogen purification process.

[0065] In the embodiment of the present invention, after the hydrogen, nitrogen and ammonia in the ammonia cracking product enter the battery 7 from the anode air inlet 71 of the battery 7 according to the set ratio, the voltage is input to the battery 7 through the power module 10. Under the voltage drive and the action of the anode catalyst, the hydrogen in the anode mixed gas is oxidized into protons, transferred to the cathode through the proton membrane, and then reduced to hydrogen under the action of the cathode catalyst, while the nitrogen and ammonia do not react and are directly discharged from the anode exhaust port, thereby realizing low-energy consumption and high-throughput hydrogen separation and purification. The hydrogen generated at the cathode is discharged together with the gas entering the battery 7 from the cathode air inlet 72.

[0066] According to one embodiment of the present invention, the system further includes: an ammonia concentration detection device and a hydrogen concentration detection device; wherein the ammonia concentration detection device is used to detect the concentration of ammonia inside the battery 7, and the hydrogen concentration detection device is used to detect the concentration of hydrogen inside the battery 7. When the concentration of ammonia inside the battery 7 and / or the concentration of hydrogen inside the battery 7 exceeds the respective set safety concentrations, an audible and / or optical alarm signal is issued, thereby realizing the linkage between the numerical value and the emergency stop function of the test system.

[0067] It should be noted that the present invention also sets a third temperature sensor 63 and a third pressure sensor 53 on the pipeline near the anode outlet 73 of the battery 7 to detect the temperature and pressure of the anode outlet 73 of the battery 7, and sets an anode back pressure control valve 34 on the pipeline between the anode tail gas treatment device 32 and the anode exhaust port to control the gas pressure of the anode exhaust port. A fourth temperature sensor 64 and a fourth pressure sensor 54 are set on the pipeline near the cathode outlet 74 of the battery 7 to detect the temperature and pressure of the cathode outlet 74 of the battery 7, and a cathode back pressure control valve 33 is set on the pipeline near the cathode tail gas treatment device 31 to control the gas pressure of the cathode exhaust port.

[0068] It should also be noted that the anode exhaust gas treatment device 32 and the cathode exhaust gas treatment device 31 in the embodiment of the present invention are exhaust gas cooling and gas-water separation devices, which are used to cool and separate the exhaust gas. The exhaust gas treatment device can also automatically drain water according to the liquid level, and a heating device is added before the exhaust gas treatment device. When the exhaust gas from the anode outlet 73 and the cathode outlet 74 of the battery 7 is lower than the respective set temperatures, the heating device works to ensure that no condensation occurs.

[0069] In summary, the test system of the hydrogen purification membrane electrode of the embodiment of the present invention includes an anode hydrogen inlet pipeline, an anode nitrogen inlet pipeline, an anode ammonia inlet pipeline, a first mass flow controller, a second mass flow controller, a third mass flow controller, a first solenoid valve to a fourth solenoid valve, a gas mixing device, a first humidifying device, a cathode tail gas treatment device and a gas detection interface; wherein the first end of the gas mixing device is respectively connected to the anode hydrogen inlet pipeline through the first mass flow controller, connected to the anode nitrogen inlet pipeline through the second mass flow controller, connected to the anode ammonia inlet pipeline through the first solenoid valve and the third mass flow controller, and connected to the anode inlet of the battery through the first solenoid valve and the second solenoid valve. The second end of the gas mixing device is connected to the anode air inlet of the battery through the third solenoid valve and to the first end of the first humidifying device through the fourth solenoid valve, and the second end of the first humidifying device is connected to the anode air inlet of the battery; the cathode gas outlet of the battery is connected to the gas detection interface through the cathode tail gas treatment device, so that the concentration of hydrogen in the gas discharged from the gas detection interface can be detected by the gas detection equipment, so as to realize the test of the performance of the hydrogen purification membrane electrode in the battery, and then provide a test and evaluation means for components such as ammonia-resistant catalysts, ammonia-resistant proton membranes and ammonia-resistant hydrogen purification membrane electrodes for hydrogen purification, determine the influence mechanism of each key component and material, effectively guide the development of related materials and processes, and improve the performance of electrochemical hydrogen separation and purification.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0071] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

Claims

1. A test system for a hydrogen purification membrane electrode, characterized in that: include: Anode hydrogen inlet pipeline, anode nitrogen inlet pipeline, anode ammonia inlet pipeline, a first mass flow controller, a second mass flow controller, a third mass flow controller, a first solenoid valve to a fourth solenoid valve, a gas mixing device, a first humidifying device, a cathode tail gas treatment device and a gas detection interface; wherein, The first end of the gas mixing device is connected to the anode hydrogen inlet pipeline through the first mass flow controller, connected to the anode nitrogen inlet pipeline through the second mass flow controller, connected to the anode ammonia inlet pipeline through the first solenoid valve and the third mass flow controller, and connected to the anode air inlet of the battery through the first solenoid valve and the second solenoid valve; The second end of the gas mixing device is connected to the anode air inlet of the battery through the third solenoid valve, and is connected to the first end of the first humidifying device through the fourth solenoid valve, and the second end of the first humidifying device is connected to the anode air inlet of the battery; The cathode gas outlet of the battery is connected to the gas detection interface through the cathode tail gas treatment device, so that the concentration of hydrogen in the gas discharged from the gas detection interface can be detected by the gas detection equipment, thereby testing the performance of the hydrogen purification membrane electrode in the battery.

2. The system according to claim 1, characterized in that The process of adjusting the type and ratio of the gas entering the mixing device to obtain the target mixed gas includes: Under the condition that the first solenoid valve is opened, the second solenoid valve is closed, the third solenoid valve is closed and the fourth solenoid valve is opened, hydrogen, nitrogen and ammonia enter the mixing device through the corresponding anode hydrogen inlet pipeline, the anode nitrogen inlet pipeline and the anode ammonia inlet pipeline to be mixed, then enter the first humidifying device for humidification treatment, and then enter the battery through the anode air inlet of the battery; Under the condition that the first solenoid valve is opened, the second solenoid valve is closed, the third solenoid valve is opened and the fourth solenoid valve is closed, hydrogen, nitrogen and ammonia enter the mixing device through the corresponding anode hydrogen intake pipeline, the anode nitrogen intake pipeline and the anode ammonia intake pipeline to mix, and then enter the battery through the anode intake port of the battery; Under the condition that the first solenoid valve is closed, the second solenoid valve is opened, the third solenoid valve is closed and the fourth solenoid valve is opened, hydrogen and nitrogen enter the mixing device through the corresponding anode hydrogen intake pipeline and the anode nitrogen intake pipeline to be mixed, and then pass through the first humidifying device for humidification treatment, and then enter the interior of the battery through the anode air inlet of the battery, and ammonia enters the interior of the battery through the anode ammonia intake pipeline and the anode air inlet of the battery in turn.

3. The system according to claim 1, characterized in that The system further comprises: a cathode air intake pipeline, a fourth mass flow controller, a fifth solenoid valve, a sixth solenoid valve and a second humidifying device; wherein, The cathode air inlet pipeline is connected to the cathode air inlet of the battery through the fourth mass flow controller and the fifth solenoid valve, and is connected to the first end of the second humidifying device through the fourth mass flow controller and the sixth solenoid valve, and the second end of the second humidifying device is connected to the cathode air inlet of the battery; The state of the gas entering the cathode gas inlet of the battery is adjusted by controlling the opening and closing states of the fifth solenoid valve and the sixth solenoid valve.

4. The system according to claim 3, characterized in that The method of adjusting the state of the gas entering the cathode air inlet of the battery by controlling the opening and closing states of the fifth solenoid valve and the sixth solenoid valve comprises: When the fifth solenoid valve is opened and the sixth solenoid valve is closed, the gas entering the cathode air inlet of the battery is not humidified; Under the condition that the fifth solenoid valve is closed and the sixth solenoid valve is opened, the gas entering the cathode air inlet of the battery is humidified by the second humidifying device.

5. The system according to claim 1, characterized in that The gas in the cathode air inlet pipeline is hydrogen or argon.

6. The system according to claim 1, characterized in that The system further comprises: a cathode exhaust port, a seventh solenoid valve, an eighth solenoid valve and a fifth mass flow controller; wherein, The output port of the cathode tail gas treatment device is connected to the cathode exhaust port through the seventh solenoid valve, and is connected to the gas detection interface through the eighth solenoid valve and the fifth mass flow controller; The flow path of the gas at the cathode outlet of the battery is determined by controlling the switch states of the seventh solenoid valve and the eighth solenoid valve.

7. The system according to claim 6, characterized in that The method of determining the flow path of the cathode gas outlet of the battery by controlling the switch states of the seventh solenoid valve and the eighth solenoid valve comprises: When the seventh solenoid valve is closed and the eighth solenoid valve is opened, the gas at the cathode gas outlet of the battery is exhausted through the cathode exhaust port; When the seventh solenoid valve is opened and the eighth solenoid valve is closed, the gas at the cathode outlet of the battery is sent to the gas detection device through the gas detection interface to detect the concentration of hydrogen in the gas discharged from the gas detection interface.

8. The system according to claim 1, characterized in that The system further comprises: an anode exhaust port and an anode tail gas treatment device; wherein, The anode gas outlet of the battery is connected to the anode exhaust port through the anode tail gas treatment device.

9. The system according to claim 1, characterized in that The system further comprises: A power module is used to supply power to the battery to support the hydrogen purification membrane electrode in the battery to perform an electrolytic hydrogen purification process.

10. The system according to claim 1, characterized in that The system further comprises: An ammonia concentration detection device, used to detect the concentration of ammonia inside the battery; A hydrogen concentration detection device, used to detect the concentration of hydrogen inside the battery; Wherein, when the concentration of ammonia gas inside the battery and / or the concentration of hydrogen gas inside the battery exceeds the respective set safety concentrations, an audible and / or optical alarm signal is issued.

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