Comprehensive performance test board for hydrogen subsystem of hydrogen fuel cell

Abstract

The utility model relates to a comprehensive performance test board for a hydrogen subsystem of a hydrogen fuel cell, which relates to the technical field of hydrogen fuel cells and comprises a test loop system. The test loop system comprises a pressure reducing valve, a pilot-operated type electromagnetic valve, a hydrogen ejector / ejector, a containing cavity, a flow adjusting valve, a moisture adjusting mechanism, a hydrogen circulating pump and a second direct-acting type electromagnetic valve which are arranged along a hydrogen conveying path, and the outlet end of the second direct-acting type electromagnetic valve leads to a path between the hydrogen ejector / ejector and the containing cavity; one or more of a pressure transmitter, a mass flow meter, a temperature transmitter and a humidity and temperature sensor is / are arranged near part or all of the hydrogen ejector / ejector, the containing cavity, the flow regulating valve, the humidity regulating mechanism and the hydrogen circulating pump in the pressure reducing valve, the hydrogen ejector / ejector, the containing cavity, the flow regulating valve, the humidity regulating mechanism and the hydrogen circulating pump. The device can be used as an independent system for operation test, can be conveniently transported, even disassembled and assembled, and is convenient for later maintenance and function change.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cells, in particular to a comprehensive performance test bench for a hydrogen subsystem of a hydrogen fuel cell. Background Art

[0002] The hydrogen subsystem is an important part of the hydrogen fuel cell system, and it undertakes many functions such as hydrogen supply, distribution, and regulation of the battery system. Hydrogen itself is a colorless, transparent, odorless and tasteless gas, and it is very easy to burn or explode. In the hydrogen subsystem of the hydrogen fuel cell, hydrogen is mostly in the form of high pressure. If there is a failure of related equipment or hydrogen leakage, it will cause great damage to the equipment and personnel; in addition, in order to improve the reaction efficiency of hydrogen fuel cells and reduce the reaction time of hydrogen fuel cells during acceleration, the general supply of hydrogen will be greater than the theoretical consumption of hydrogen. If the excessive supply of hydrogen in the system is not recycled, but directly discharged into the atmosphere with the tail gas, it will not only cause a large amount of hydrogen waste, but also the concentration of unreacted hydrogen in the atmosphere will produce flammable and explosive safety hazards. Therefore, in the hydrogen fuel system, recycling hydrogen can not only improve the utilization rate of hydrogen, but also improve the safety of hydrogen-related links.

[0003] At present, there are two main forms of hydrogen circulation devices commonly used in hydrogen fuel cell systems, namely the active circulation method of hydrogen injector + hydrogen circulation pump and the passive circulation method of hydrogen ejector. In the active circulation method, the advantage of the hydrogen circulation pump is that it is applicable to a wider power range of hydrogen fuel cells, which can basically cover full power, and has many advantages such as good sealing performance, low vibration and noise, strong low-temperature cold start capability, strong EMC anti-electromagnetic interference capability, and good working stability; in the passive circulation method, the hydrogen ejector pump has no moving parts, simple structure, reliable operation, and no parasitic power during operation, which can well guarantee the system output power of hydrogen fuel cells. Therefore, these two forms of hydrogen circulation methods have certain application scenarios in hydrogen fuel cells.

[0004] The hydrogen subsystem cycle generally includes important components such as hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps, hydrogen exhaust valves, and normally open solenoid valves. Their safety and reliability play a vital role in the stable operation of fuel cell engines.

[0005] At present, the important components of hydrogen fuel cell systems in China, such as hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps, hydrogen exhaust valves, normally open solenoid valves, etc., are mainly customized and developed based on customer needs. There are certain differences in the design ideas and solutions of different companies, and it is difficult to unify them. Moreover, during the testing process, if there is a mismatch, it is also very easy to damage the core components of the battery system, thereby causing damage to equipment and personnel. There are mainly the following problems:

[0006] 1. Different brands of hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps, hydrogen exhaust valves, normally open solenoid valves, mechanical interfaces, electrical nozzles and other structural requirements are different, making it difficult to directly install them on the vehicle-mounted hydrogen fuel cell system for matching tests;

[0007] 2. Different brands of hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps, hydrogen exhaust valves, and normally open solenoid valves have different test parameter requirements, which makes it difficult to display and feedback directly on the on-board hydrogen fuel cell system. Utility Model Content

[0008] The purpose of this utility model is to provide a simple and safe universal hydrogen fuel cell hydrogen subsystem comprehensive performance test bench, which is of great significance for the selection and verification, development and research, matching test with the system, as well as arrival quality inspection, regular spot check, fault analysis and processing of important parts such as hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps, hydrogen exhaust valves, normally open solenoid valves and other important parts of different brands. Ultimately, it is ensured that the core parts such as hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps, hydrogen exhaust valves, normally open solenoid valves installed on the hydrogen fuel cell system have suitable performance and are safe and reliable.

[0009] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a hydrogen fuel cell hydrogen subsystem comprehensive performance test bench, including a test loop system, wherein the test loop system includes a pressure reducing valve, a pilot solenoid valve, a hydrogen injector / ejector, a chamber, a flow regulating valve, a moisture regulating mechanism, a hydrogen circulation pump, and a second direct-acting solenoid valve arranged along a hydrogen delivery path, wherein the outlet end of the second direct-acting solenoid valve leads to the path between the hydrogen injector / ejector and the chamber, and the outlet end of the moisture regulating mechanism is further provided with a flow regulating valve leading to the hydrogen injector / ejector. The path of the device is provided with a third direct-acting solenoid valve and a fourth direct-acting solenoid valve, a pressure transmitter is provided after the pressure reducing valve, before and after the hydrogen injector / ejector, in front of the chamber, after the flow regulating valve, in front of the moisture regulating mechanism, and before and after the main path of the hydrogen circulation pump, a mass flow meter is provided in front of the hydrogen injector / ejector, after the main path of the hydrogen circulation pump, and in the bypass of the hydrogen circulation pump, a temperature transmitter is provided before and after the hydrogen injector / ejector, and before and after the main path of the hydrogen circulation pump, and a temperature and humidity sensor is provided before and after the main path of the hydrogen circulation pump.

[0010] Preferably, a pipeline is further provided between the chamber and the humidity regulating mechanism, and a hydrogen exhaust valve is provided on the pipeline.

[0011] Preferably, the pressure reducing valve is connected to a high-pressure hydrogen storage tank.

[0012] Preferably, the humidity regulating mechanism uses two manual three-way ball valves connected in series with the main circuit to achieve free switching between the direct main circuit and the humidification bypass.

[0013] Preferably, the hydrogen injector / ejector inlet pipe is connected to the hydrogen injector / ejector and the first mass flow meter by a hose; the hydrogen injector / ejector outlet pipe is connected to the hydrogen injector / ejector, the chamber, and the second direct-acting solenoid valve by a hose; the chamber exhaust pipe is connected to the first direct-acting solenoid valve, the flow regulating valve, and the hydrogen exhaust valve by a hose; the hydrogen circulation pump inlet pipe is connected to the second manual three-way ball valve, the hydrogen circulation pump, and the third direct-acting solenoid valve by a hose; the hydrogen circulation pump outlet pipe is connected to the hydrogen The gas circulation pump and the second mass flow meter are both connected by hoses; the active circulation outlet pipe of the hydrogen circulation pump is connected to the second mass flow meter and the second direct-acting solenoid valve by hoses; the passive circulation outlet straight pipe of the hydrogen circulation pump is a long hose, and both ends are respectively connected to the third mass flow meter and the third direct-acting solenoid valve by plug-in connection; the passive circulation outlet elbow of the hydrogen circulation pump is connected to the third mass flow meter and the fourth direct-acting solenoid valve by hoses; the outlet pipe of the pressure reducing valve is threadedly connected to the pressure reducing valve, and is connected to the pilot solenoid valve by a hose.

[0014] Preferably, all pressure transmitters, temperature transmitters, humidity sensors and pipes in the system loop are connected by threads or plug-in.

[0015] Preferably, the test loop system is connected to a main control system, an auxiliary controller system, an actuator driver system, a high voltage power supply system, a low voltage power supply system, and a humidity control module, wherein the humidity control module is connected to the humidity regulating mechanism.

[0016] Preferably, it also includes a test bench cabinet that is convenient for integrated installation of all structural components.

[0017] The utility model designs a hydrogen fuel cell hydrogen subsystem comprehensive performance test bench, which has the following beneficial effects:

[0018] 1. Able to meet the performance test of important components such as hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps, hydrogen exhaust valves, normally open solenoid valves for fuel cells of 10-150KW level;

[0019] 2. With a few minor modifications to a small number of mechanical and electrical components, it can be compatible with the mechanical interfaces, electrical interfaces and other installation requirements of hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps, hydrogen exhaust valves, and normally open solenoid valves of different brands;

[0020] 3. With a slight addition or modification to the system and software, the parameter testing requirements of hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps, hydrogen exhaust valves, and normally open solenoid valves of different brands can be met, and the control and detection interfaces remain consistent.

[0021] The test bench can be run as a separate system for testing. It can be easily transported and even disassembled and assembled. It is easy to maintain and change functions later. The test bench test, control, data acquisition and processing related software are open source to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the system layout diagram of the comprehensive performance test bench for the hydrogen subsystem of the hydrogen fuel cell;

[0023] Figure 2 This is the test circuit schematic diagram of the comprehensive performance test bench for the hydrogen subsystem of the hydrogen fuel cell;

[0024] Figure 3 This is the test circuit structure diagram of the hydrogen fuel cell hydrogen subsystem comprehensive performance test bench.

[0025] Reference numerals:

[0026] 100. Test loop system; 101. Hydrogen injector / ejector; 1011. Hydrogen injector / ejector inlet pipe; 1012. Hydrogen injector / ejector outlet pipe; 102. Cavity; 1021. Cavity exhaust pipe; 103. Humidity regulating mechanism; 1031. Humidification inlet pipe of humidity module; 1032. First manual three-way ball valve; 1033. Second manual three-way ball valve; 1034. Humidification outlet pipe of humidity module; 104. Hydrogen circulation pump; 1041. Hydrogen circulation pump inlet pipe; 1042. Hydrogen circulation pump outlet pipe; 1043. Active circulation outlet pipe of hydrogen circulation pump; 1044. Passive circulation outlet straight pipe of hydrogen circulation pump; 1045. Passive circulation outlet elbow of hydrogen circulation pump; 105. First pressure transmitter; 106. Second pressure transmitter; 107. Third pressure transmitter transmitter; 108, fourth pressure transmitter; 109, fifth pressure transmitter; 110, sixth pressure transmitter; 111, seventh pressure transmitter; 112, eighth pressure transmitter; 113, first temperature transmitter; 114, second temperature transmitter; 115, third temperature transmitter; 116, fourth temperature transmitter; 117, first temperature and humidity sensor; 118, second temperature and humidity sensor; 119, first mass flow meter; 120, second mass flow meter; 121, third mass flow meter; 122, pilot solenoid valve; 123, first direct-acting solenoid valve; 124, second direct-acting solenoid valve; 125, third direct-acting solenoid valve; 126, fourth direct-acting solenoid valve; 127, pressure reducing valve; 1271, pressure reducing valve outlet pipe; 128, flow regulating valve; 129, hydrogen exhaust valve;

[0027] 200, main control system; 300, auxiliary controller system; 400, actuator driver system; 500, high voltage power supply system; 600, low voltage power supply system; 700, moisture control module; 800, high pressure hydrogen storage tank; 900, test bench cabinet;

[0028] A1, hydrogen inlet; A2, hydrogen outlet; B1, main hydrogen; C1, bypass moisture module humidification inlet; C2, bypass moisture module humidification outlet; K1, first manual three-way ball valve shaft; K2, second manual three-way ball valve shaft. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The embodiment of the utility model discloses a comprehensive performance test bench for a hydrogen fuel cell hydrogen subsystem, and its system layout specifically includes: a test loop system 100, a main control system 200, an auxiliary controller system 300, an actuator driver system 400, a high-voltage power supply system 500, a low-voltage power supply system 600, and a moisture control module 700, which are composed of seven parts in total.

[0031] The main control system 200 mainly includes a control cabinet, a test bench controller, a main control computer, control software and other parts, and is interconnected and controlled with various modules in the test loop system 100 through the CAN protocol.

[0032] The auxiliary controller system 300 is responsible for controlling the start, stop, speed regulation and other functions of the equipment in the hydrogen subsystem.

[0033] The actuator driver system 400 is responsible for controlling the actuation of each driving structure in the hydrogen subsystem.

[0034] The high voltage power supply system 500 is responsible for providing DC power to the hydrogen circulation pump 104 and other equipment of the hydrogen subsystem.

[0035] The low-voltage power supply system 600 is responsible for providing the required control power to each controller in the hydrogen subsystem.

[0036] The humidity control module 700 is mainly used to humidify the hydrogen in the hydrogen subsystem. When the hydrogen fuel cell is undergoing a chemical reaction, hydrogen releases electrons and becomes hydrogen ions that reach the cathode, and then combines with oxygen ions to generate reactant water. In this process, the proton membrane must be at a certain humidity to effectively conduct hydrogen ions. Too low humidity will cause the conductivity of the proton membrane to be too low, and too high humidity will cause water to flood the electrodes, resulting in increased resistance for hydrogen ions to pass through the proton membrane, greatly affecting battery performance. In this test bench, the humidity control module 700 humidifies the hydrogen at the inlet of equipment such as the hydrogen circulation pump 104 to simulate the working conditions on the hydrogen side of the proton membrane in the hydrogen fuel cell system. The module can simultaneously realize hydrogen humidification and temperature control, and has functions such as data control, collection, transmission, and recording.

[0037] Reference Figure 2 The utility model relates to a comprehensive performance test bench for a hydrogen subsystem of a hydrogen fuel cell. The test loop system 100 specifically includes: a hydrogen injector / ejector 101, a chamber 102, a moisture regulating mechanism 103, a hydrogen circulation pump 104, and a hydrogen exhaust valve 129, which are composed of five parts in total.

[0038] The humidity regulating mechanism 103 can realize free switching between the direct main route and the humidification bypass, that is, when the hydrogen does not need to be humidified, it switches to the main hydrogen B1 to directly connect to the main route; when the hydrogen needs to be humidified, the hydrogen will enter the humidity control module 700 from the humidification inlet C1 of the bypass humidity module, and the humidified hydrogen will return to the system from the humidification outlet C2 of the bypass humidity module.

[0039] Hydrogen active circulation loop test: The loop is mainly composed of a hydrogen injector / ejector 101, a chamber 102, a moisture regulating mechanism 103, a hydrogen circulation pump 104, a hydrogen exhaust valve 129, and related instruments and valves.

[0040] The hydrogen active circulation loop is installed with a hydrogen injector as the object to be measured, the third direct-acting solenoid valve 125 and the fourth direct-acting solenoid valve 126 are closed, and the first direct-acting solenoid valve 123 and the second direct-acting solenoid valve 124 are opened, and the hydrogen active circulation loop is opened.

[0041] The high-pressure hydrogen (about 70MPa) in the high-pressure hydrogen storage tank 800 is depressurized to about 1.0-1.5MPa through the pressure reducing valve 127 at the hydrogen inlet A1, enters the pilot solenoid valve 122 for adjustment, and then passes through the hydrogen injector 101 to reduce the pressure to the pressure required for the operation of the hydrogen fuel cell (40kPa-300kPa). The low-pressure hydrogen then enters the chamber 102 for deceleration, and the hydrogen flow rate is adjusted through the flow regulating valve 128. If the depressurized hydrogen does not need to be humidified, it will directly go through the main hydrogen B1 main gas path, and the high-pressure hydrogen at D1, which is pressurized by the hydrogen circulation pump 104, is directly mixed with the high-speed hydrogen at D2 ejected by the hydrogen injector 101 at the three-way, and the mixed hydrogen enters the chamber 102 through the D3 pipeline for deceleration, and the hydrogen flow rate is adjusted through the flow regulating valve 128, and then enters the circulation system again;

[0042] If the depressurized hydrogen needs to be humidified, it is sent to the humidity control module 700 from the humidification inlet C1 of the bypass humidity module through the humidity regulating mechanism 103 for humidification treatment. The humidified hydrogen enters the circulation from the humidification outlet C2 of the bypass humidity module. The high-pressure humidified hydrogen at D1 after being pressurized by the hydrogen circulation pump 104 is mixed with the high-speed dry hydrogen at D2 sprayed by the hydrogen injector 101 at the three-way. The mixed hydrogen enters the cavity 102 through the D3 pipeline for deceleration, and the hydrogen flow is adjusted by the flow regulating valve 128, and enters the circulation system again, so as to simulate the real state of hydrogen humidification, dry and wet hydrogen mixing in the hydrogen fuel cell. When the hydrogen concentration or pressure in the system is too high, the hydrogen exhaust valve 129 is opened to discharge the excess mixed hydrogen into the atmosphere from the hydrogen outlet A2.

[0043] Hydrogen passive circulation loop test: The loop is mainly composed of a hydrogen ejector 101, a container chamber 102, a moisture regulating mechanism 103, a hydrogen exhaust valve 129, and related instruments and valves.

[0044] A hydrogen ejector is installed as the object to be measured in the hydrogen passive circulation loop, the second direct-acting solenoid valve 124 is closed, and the first direct-acting solenoid valve 123, the third direct-acting solenoid valve 125, and the fourth direct-acting solenoid valve 126 are opened, and the hydrogen passive circulation loop is opened.

[0045] The high-pressure hydrogen (about 70MPa) in the high-pressure hydrogen storage tank 800 is reduced in pressure to about 1.0-1.5MPa through the pressure reducing valve 127 at the hydrogen inlet A1, enters the pilot solenoid valve 122 for regulation, and then is ejected through the hydrogen ejector 101 to eject the high-pressure hydrogen at E2. The high-pressure hydrogen in the ejector 101 is ejected backward at a high speed and forms a low-pressure area, sucking in the circulating hydrogen at E1. The mixed hydrogen is ejected from the E3 port into the chamber 102 for deceleration, and the hydrogen flow is adjusted through the flow regulating valve 128. If the hydrogen in the system is not needed, For humidification, the main hydrogen B1 main gas path is directly used, and the main hydrogen B1 gas path is directly returned to the hydrogen ejector 101, and the hydrogen after the pressure reducing valve 127 is re-injected, and the hydrogen enters the circulation system again; if the hydrogen in the system needs to be humidified, the humidification control module 700 is sent to the humidification control module 700 from C1 through the humidification adjustment mechanism 103 for humidification treatment, and the humidified hydrogen enters the circulation from C2, and then flows back to the hydrogen ejector 101, and is re-injected to mix with the dry hydrogen after the pressure reducing valve 127, and enters the circulation system again, so as to simulate the real state of hydrogen humidification, dry and wet hydrogen mixing in hydrogen fuel cells. When the hydrogen concentration or pressure in the system is too high, the hydrogen exhaust valve 129 is opened, and the excess mixed hydrogen is discharged into the atmosphere from the hydrogen outlet A2.

[0046] During the operation of the hydrogen subsystem, it is necessary to continuously collect and transmit performance parameters through pressure transmitters, temperature transmitters, flow meters, temperature and humidity sensors, etc. The performance parameters mainly include: the pressure of the first pressure transmitter 105 after the pressure reducing valve 127; the flow of the first mass flow meter 119 before the hydrogen injector / ejector 101, the pressure of the second pressure transmitter 106, the temperature of the first temperature transmitter 113, the pressure of the third pressure transmitter 107 after the hydrogen injector / ejector 101, the temperature of the second temperature transmitter 114; the pressure of the fourth pressure transmitter 108 before the cavity 102; the pressure of the fifth pressure transmitter 109 after the flow regulating valve 128; the humidity regulator The pressure of the sixth pressure transmitter 110 before the mechanism 103; the pressure of the seventh pressure transmitter 111 before the main circuit of the hydrogen circulation pump 104, the humidity and temperature of the first temperature and humidity sensor 117, the temperature of the third temperature transmitter 115, the pressure of the eighth pressure transmitter 112 after the main circuit of the hydrogen circulation pump 104, the humidity and temperature of the second temperature and humidity sensor 118, the temperature of the fourth temperature transmitter 116, the flow of the second mass flow meter 120; the flow of the third mass flow meter 121 bypassing the hydrogen circulation pump 104. Finally, the data can be sorted according to actual needs, and the characteristic maps of the hydrogen injector / ejector 101, the hydrogen circulation pump 104, and the hydrogen exhaust valve 129 can be drawn, stored and printed in document format.

[0047] Reference Figure 3The humidity regulating mechanism 103 uses two manual three-way ball valves (the first manual three-way ball valve 1032 and the second manual three-way ball valve 1033) in series with the main circuit, which can realize free switching between the direct main circuit and the humidification bypass. When the hydrogen in the test bench passage does not need humidification treatment, the first manual three-way ball valve shaft K1 and the second manual three-way ball valve shaft K2 are maintained at the current horizontal position, and the air does not pass through the moisture control module 700, but directly enters the direct main road, flows into the hydrogen circulation pump inlet pipe 1041, and enters the circulation system; when the hydrogen in the test bench passage needs humidification treatment, the first manual three-way ball valve shaft K1 rotates 90° clockwise to a vertical position, and at the same time, the second manual three-way ball valve shaft K2 rotates 90° clockwise to a vertical position, and the hydrogen will enter the moisture control module 700 from the moisture module humidification inlet pipe 1031 through the bypass moisture module humidification inlet C1. The wet hydrogen after humidification treatment flows from the bypass moisture module humidification outlet C2 through the moisture module humidification outlet pipe 1034 into the hydrogen circulation pump inlet pipe 1041 and enters the circulation system.

[0048] The hydrogen injector / ejector inlet pipe 1011 is connected to the hydrogen injector / ejector 101 and the first mass flowmeter 119 by a hose; the hydrogen injector / ejector outlet pipe 1012 is connected to the hydrogen injector / ejector 101, the chamber 102, and the second direct-acting solenoid valve 124 by a hose; the chamber exhaust pipe 1021 is connected to the first direct-acting solenoid valve 123, the flow regulating valve 128, and the hydrogen exhaust valve 129 by a hose; the hydrogen circulation pump inlet pipe 1041 is connected to the second manual three-way ball valve 1033, the hydrogen circulation pump 104, and the third direct-acting solenoid valve 125 by a hose; the hydrogen circulation pump outlet pipe 1042 is connected to the hydrogen The gas circulation pump 104 and the second mass flow meter 120 are both connected by hoses; the active circulation outlet pipe 1043 of the hydrogen circulation pump is connected to the second mass flow meter 120 and the second direct-acting solenoid valve 124 by hoses; the passive circulation outlet straight pipe 1044 of the hydrogen circulation pump is a long hose, and its two ends are respectively connected to the third mass flow meter 121 and the third direct-acting solenoid valve 125 by plug-in type; the passive circulation outlet elbow pipe 1045 of the hydrogen circulation pump is connected to the third mass flow meter 121 and the fourth direct-acting solenoid valve 126 by hoses; the pressure reducing valve outlet pipe 1271 is threadedly connected to the pressure reducing valve 127, and is connected to the pilot solenoid valve 122 by a hose. All pressure transmitters, temperature transmitters, humidity sensors and pipelines in the system loop are threaded or plug-in connected.

[0049] The utility model also designs a test bench cabinet 900, in which all mechanical equipment, pipelines and other structural parts of the test bench can be integrated and installed, and fixed by various types of pipe clamps to ensure that the hydrogen subsystem passage can operate normally. If the test bench needs to be transferred, transported, or modified, the test bench cabinet 900 can be easily disassembled and reassembled.

[0050] The utility model provides a universal hydrogen fuel cell hydrogen subsystem comprehensive performance test bench, which can meet the performance test of important parts such as hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps 104, hydrogen exhaust valves 129, normally open solenoid valves for hydrogen fuel cells of 10 to 150KW level; by slightly modifying a small number of mechanical and electrical components, it can be compatible with the mechanical interface, electrical interface and other installation requirements of hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps 104, hydrogen exhaust valves 129, and normally open solenoid valves of different brands; by slightly adding or modifying the system and software, it can meet the parameter test requirements of hydrogen injectors, hydrogen ejectors, hydrogen circulation pumps 104, hydrogen exhaust valves 129, and normally open solenoid valves of different brands, and the control and detection interfaces are consistent. The bench can be used as a separate system for operation testing, can be conveniently transported or even disassembled and assembled, and is convenient for later maintenance and function changes. The bench test, control, data acquisition and processing related software are open source to users. The operating condition test in the characteristic test can be controlled manually or automatically, and the experimental data can be automatically collected, processed, displayed, stored and printed out in excel / pdf documents.

[0051] The test bench can complete the following test functions:

[0052] 1. Characteristic test of hydrogen injector / ejector 101: adjust the inlet pressure, duty cycle, injection cycle, and outlet pressure target value of hydrogen injector / ejector 101 according to demand, and monitor the intake pressure, outlet pressure, intake flow rate, response time, and duty cycle changes under automatic operation at the same time; test the characteristics of hydrogen injector / ejector 101 and automatically draw performance curves;

[0053] 2. Characteristic test of hydrogen circulation pump 104: the inlet pressure, temperature and humidity of hydrogen circulation pump 104 can be adjusted to test the characteristics of hydrogen circulation pump 104 in hydrogen and hydrogen / water vapor mixed working gas, and the performance curve can be automatically drawn;

[0054] 3. Characteristic test of the hydrogen exhaust valve 129: the opening and closing time of the hydrogen exhaust valve 129 can be adjusted according to demand, and the change of flow rate under different intake pressures can be tested; the characteristics of the hydrogen exhaust valve 129 can be tested, and the performance curve can be automatically drawn.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydrogen fuel cell hydrogen subsystem comprehensive performance test bench, characterized in that: The invention comprises a test loop system (100), wherein the test loop system (100) comprises a pressure reducing valve (127) arranged along a hydrogen transport path, a pilot electromagnetic valve (122), a hydrogen injector / ejector (101), a chamber (102), a flow regulating valve (128), a moisture regulating mechanism (103), a hydrogen circulation pump (104), and a second direct-acting electromagnetic valve (124), wherein the outlet end of the second direct-acting electromagnetic valve (124) leads to a path between the hydrogen injector / ejector (101) and the chamber (102), and the outlet end of the moisture regulating mechanism (103) is further provided with a path leading to the hydrogen injector / ejector (101) and a third direct-acting electromagnetic valve is provided thereon. (125) and a fourth direct-acting solenoid valve (126); pressure transmitters are provided behind the pressure reducing valve (127), before and after the hydrogen injector / ejector (101), before the chamber (102), after the flow regulating valve (128), before the moisture regulating mechanism (103), and before and after the main path of the hydrogen circulation pump (104); mass flow meters are provided in front of the hydrogen injector / ejector (101), after the main path of the hydrogen circulation pump (104), and in the bypass of the hydrogen circulation pump (104); temperature transmitters are provided before and after the hydrogen injector / ejector (101), before and after the main path of the hydrogen circulation pump (104); and temperature and humidity sensors are provided before and after the main path of the hydrogen circulation pump (104).

2. A hydrogen fuel cell hydrogen subsystem comprehensive performance test bench according to claim 1, characterized in that: A pipeline is further provided between the chamber (102) and the humidity regulating mechanism (103), and a hydrogen discharge valve (129) is provided on the pipeline.

3. A hydrogen fuel cell hydrogen subsystem comprehensive performance test bench according to claim 1, characterized in that: The pressure reducing valve (127) is connected to a high-pressure hydrogen storage tank (800).

4. A hydrogen fuel cell hydrogen subsystem comprehensive performance test bench according to claim 1, characterized in that: The humidity regulating mechanism (103) uses two manual three-way ball valves connected in series with the main path to achieve free switching between the direct main path and the humidification bypass.

5. A hydrogen fuel cell hydrogen subsystem comprehensive performance test bench according to claim 2, characterized in that: The hydrogen injector / ejector inlet pipe (1011) is connected to the hydrogen injector / ejector (101) and the first mass flow meter (119) by a hose; the hydrogen injector / ejector outlet pipe (1012) is connected to the hydrogen injector / ejector (101), the chamber (102) and the second direct-acting solenoid valve (124) by a hose; the chamber exhaust pipe (1021) is connected to the first direct-acting solenoid valve (123), the flow regulating valve (128) and the hydrogen exhaust valve (129) by a hose; the hydrogen circulation pump inlet pipe (1041) is connected to the second manual three-way ball valve (1033), the hydrogen circulation pump (104) and the third direct-acting solenoid valve (125) by a hose; the hydrogen circulation pump outlet pipe (1042) The hydrogen circulation pump (104) and the second mass flow meter (120) are all connected by hoses; the active circulation outlet pipe (1043) of the hydrogen circulation pump is connected by hoses to the second mass flow meter (120) and the second direct-acting solenoid valve (124); the passive circulation outlet straight pipe (1044) of the hydrogen circulation pump is a long hose, and its two ends are respectively connected to the third mass flow meter (121) and the third direct-acting solenoid valve (125) by plug-in connection; the passive circulation outlet elbow pipe (1045) of the hydrogen circulation pump is connected to the third mass flow meter (121) and the fourth direct-acting solenoid valve (126) by hoses; the pressure reducing valve outlet pipe (1271) is threadedly connected to the pressure reducing valve (127), and is connected to the pilot solenoid valve (122) by a hose.

6. A hydrogen fuel cell hydrogen subsystem comprehensive performance test bench according to claim 5, characterized in that: All pressure transmitters, temperature transmitters, humidity sensors and pipes in the system loop are connected by thread or plug-in.

7. A hydrogen fuel cell hydrogen subsystem comprehensive performance test bench according to claim 1, characterized in that: The test loop system (100) is connected to a main control system (200), an auxiliary controller system (300), an actuator driver system (400), a high voltage power supply system (500), a low voltage power supply system (600), and a humidity control module (700), wherein the humidity control module (700) is connected to the humidity regulating mechanism (103).

8. A hydrogen fuel cell hydrogen subsystem comprehensive performance test bench according to claim 1, characterized in that: Also included is a test bench cabinet (900) that facilitates the integrated installation of all structural components.

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