Fuel cell accessory testing system

Abstract

The present application relates to the technical field of fuel cell, and provides a fuel cell auxiliary component test system.The fuel cell auxiliary component test system comprises a hydrogen charging unit, a hydrogen storage unit, a hydrogen supply unit, a simulated fuel cell and a mass flow regulating unit.The hydrogen charging unit is connected with the hydrogen storage unit to charge hydrogen into the hydrogen storage unit.The hydrogen storage unit is connected with the hydrogen supply unit, and the hydrogen supply unit is connected with the simulated fuel cell, so that the hydrogen storage unit supplies hydrogen to the simulated fuel cell through the hydrogen supply unit.The simulated fuel cell is connected with the mass flow regulating unit, and the mass flow regulating unit can regulate the hydrogen consumption mass flow of the simulated fuel cell to change the power of the simulated fuel cell, so that the gas consumption and the required gas consumption for calibration of the simulated fuel cell under different working conditions in the test process are simulated, and the test result is closer to the real working condition.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and in particular to a fuel cell auxiliary component testing system. Background Technology

[0002] Currently, fuel cell accessory testing systems require the simulation of hydrogen flow rate under different power conditions using fuel cell stacks. The entire testing system is expensive, has poor safety, and low integration, and cannot meet the testing needs of different fuel cell accessories. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a fuel cell auxiliary component testing system.

[0004] This invention provides a fuel cell auxiliary component testing system, comprising: a hydrogen charging unit, a hydrogen storage unit, a hydrogen supply unit, a simulated fuel cell, and a mass flow rate regulation unit.

[0005] The hydrogen charging unit is connected to the hydrogen storage unit, the hydrogen storage unit is connected to the hydrogen supply unit, the hydrogen supply unit is connected to the simulated fuel cell, and the simulated fuel cell is connected to the mass flow rate regulating unit.

[0006] The hydrogen charging unit is used to charge the hydrogen storage unit with hydrogen, and the hydrogen storage unit supplies hydrogen to the simulated fuel cell via the hydrogen supply unit. The mass flow rate regulating unit is used to regulate the hydrogen consumption mass flow rate of the simulated fuel cell.

[0007] According to a fuel cell auxiliary component testing system provided by the present invention, the fuel cell auxiliary component testing system further includes an unloading unit, which is connected to the hydrogen supply unit and the hydrogen storage unit and is used to unload the hydrogen supply unit and the hydrogen storage unit.

[0008] According to a fuel cell auxiliary component testing system provided by the present invention, the hydrogen storage unit includes multiple hydrogen storage tanks arranged in parallel, each hydrogen storage tank is equipped with a bottle neck combination valve, the hydrogen charging unit is connected to the corresponding hydrogen storage tank through each bottle neck combination valve, and each hydrogen storage tank is connected to the hydrogen supply unit through the corresponding bottle neck combination valve.

[0009] According to the present invention, a fuel cell auxiliary component testing system includes a bottle neck combination valve comprising a bottle neck check valve, a bottle neck solenoid valve, and a bottle neck shut-off valve.

[0010] The hydrogen storage tank is connected to the bottle neck shut-off valve. The bottle neck check valve and the bottle neck solenoid valve are connected in parallel between the bottle neck shut-off valve and the hydrogen filling unit and the hydrogen supply unit. The hydrogen filling unit can be connected to the bottle neck shut-off valve via the bottle neck check valve, and the bottle neck shut-off valve can be connected to the hydrogen supply unit via the bottle neck solenoid valve.

[0011] According to a fuel cell accessory testing system provided by the present invention, the cylinder valve combination further includes a venting device and a cylinder valve temperature detection device. The cylinder valve temperature detection device is used to detect the internal temperature of the hydrogen storage tank. The venting device is connected between the hydrogen storage tank and the unloading unit. The venting device and the cylinder valve temperature detection device are used to control the connection state between the hydrogen storage tank and the unloading unit based on the detection result of the cylinder valve temperature detection device.

[0012] According to a fuel cell accessory testing system provided by the present invention, the bottle neck combination valve further includes an overflow valve and a bottle valve pressure detection device, and the hydrogen filling unit includes a hydrogen filling check valve and a hydrogen filling pressure detection device.

[0013] A hydrogen source is connected to the hydrogen filling check valve, which is connected to the bottle opening check valve and the bottle opening solenoid valve via the overflow valve. The hydrogen filling pressure detection device is located between the hydrogen filling check valve and the overflow valve. The bottle valve pressure detection device is located between the overflow valve and the bottle opening check valve and the bottle opening solenoid valve. The overflow valve can adjust its opening degree based on the detection results of the bottle valve pressure detection device and the hydrogen filling pressure detection device.

[0014] According to the present invention, a fuel cell auxiliary component testing system includes a hydrogen supply unit comprising a hydrogen supply solenoid valve, a pressure reducing valve, a hydrogen supply shut-off valve, a hydrogen supply proportional valve, an ejector, a gas-liquid separator, and a hydrogen circulation pump.

[0015] Each of the hydrogen storage tanks is connected to the hydrogen supply solenoid valve via a corresponding bottle neck combination valve. The hydrogen supply solenoid valve is connected to the pressure reducing valve, the pressure reducing valve is connected to the hydrogen supply shut-off valve, the hydrogen supply shut-off valve is connected to the hydrogen supply proportional valve, the hydrogen supply proportional valve is connected to the inlet end of the ejector, the outlet end of the ejector is connected to the inlet end of the simulated fuel cell, the return end of the simulated fuel cell is connected to the hydrogen circulation pump via the gas-water separator, and the hydrogen circulation pump is connected to the return end of the ejector.

[0016] According to a fuel cell accessory testing system provided by the present invention, a pressure reducing device is provided between the pressure reducing valve and the hydrogen supply shut-off valve; a first flow detection device and a first pressure detection device are provided between the hydrogen supply proportional valve and the inlet end of the ejector; a second flow detection device and a second pressure detection device are provided between the outlet end of the ejector and the inlet end of the simulated fuel cell; a third flow detection device and a third pressure detection device are provided between the return end of the simulated fuel cell and the gas-liquid separator; a fourth flow detection device and a fourth pressure detection device are provided between the gas-liquid separator and the hydrogen circulation pump; and a fifth pressure detection device is provided between the hydrogen circulation pump and the return end of the ejector.

[0017] According to the present invention, a fuel cell auxiliary component testing system includes an unloading unit comprising an unloading check valve and an unloading pipeline. The unloading check valve is disposed on the unloading pipeline. The outlet end of the pressure reducing valve is connected to the unloading check valve through a safety valve. A discharge shut-off valve is disposed in parallel at the safety valve.

[0018] According to a fuel cell accessory testing system provided by the present invention, the mass flow regulating unit includes a mass flow meter; the simulated fuel cell is also provided with an exhaust shut-off valve, which is used to release the gas inside the simulated fuel cell.

[0019] The fuel cell auxiliary component testing system provided by this invention includes: a hydrogen charging unit, a hydrogen storage unit, a hydrogen supply unit, a simulated fuel cell, and a mass flow rate regulation unit. The hydrogen charging unit is connected to the hydrogen storage unit to charge the storage unit with hydrogen. The hydrogen storage unit is connected to the hydrogen supply unit, which in turn is connected to the simulated fuel cell, allowing the storage unit to supply hydrogen to the simulated fuel cell via the supply unit. The simulated fuel cell unit is connected to the mass flow rate regulation unit, which adjusts the hydrogen consumption mass flow rate of the simulated fuel cell to change its power. This allows the system to simulate the hydrogen consumption of the simulated fuel cell under different operating conditions and to calibrate the required hydrogen consumption during testing, making the test results more closely resemble real-world operating conditions. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the system structure of the fuel cell auxiliary component testing system provided by the present invention.

[0022] Reference numerals: 100, Simulated fuel cell; 200, Mass flow rate regulating unit; 310, Hydrogen storage tank; 320, Bottle neck combination valve; 321, Bottle neck check valve; 322, Bottle neck solenoid valve; 323, Bottle neck shut-off valve; 324, Discharge device; 325, Bottle valve temperature detection device; 326, Overflow valve; 327, Bottle valve pressure detection device; 410, Hydrogen supply solenoid valve; 420, Pressure reducing valve; 430, Hydrogen supply shut-off valve; 440, Hydrogen supply proportional valve; 450, Ejector; 460, Gas-liquid separator; 470, Hydrogen circulation pump; 510, Pressure reducing valve. Force detection device; 520, First pressure detection device; 530, Second pressure detection device; 540, Third pressure detection device; 550, Fourth pressure detection device; 560, Fifth pressure detection device; 610, First flow detection device; 620, Second flow detection device; 630, Third flow detection device; 640, Fourth flow detection device; 710, Unloading pipeline; 720, Unloading check valve; 730, Safety valve; 740, Relief shut-off valve; 800, Exhaust shut-off valve; 910, Hydrogen charging check valve; 920, Hydrogen charging pressure detection device. Detailed Implementation

[0023] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0026] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions 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 suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples and features of different embodiments or examples described in this specification to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The following is combined Figure 1 A fuel cell accessory testing system provided in an embodiment of the present invention will be described. It should be understood that the following description is merely an illustrative embodiment of the present invention and does not constitute any particular limitation on the present invention.

[0029] Embodiments of the present invention provide a fuel cell accessory testing system, such as... Figure 1 As shown, the fuel cell auxiliary testing system includes: a hydrogen charging unit, a hydrogen storage unit, a hydrogen supply unit, a simulated fuel cell 100, and a mass flow rate regulation unit 200.

[0030] The hydrogen charging unit is connected to the hydrogen storage unit, the hydrogen storage unit is connected to the hydrogen supply unit, the hydrogen supply unit is connected to the simulated fuel cell 100, and the simulated fuel cell 100 is connected to the mass flow regulation unit 200.

[0031] The hydrogen charging unit is used to charge the hydrogen storage unit with hydrogen. The hydrogen storage unit supplies hydrogen to the simulated fuel cell 100 via the hydrogen supply unit. The mass flow rate regulating unit 200 is used to regulate the hydrogen consumption mass flow rate of the simulated fuel cell 100.

[0032] In other words, the fuel cell auxiliary component testing system provided by this invention includes: a hydrogen charging unit, a hydrogen storage unit, a hydrogen supply unit, a simulated fuel cell 100, and a mass flow rate regulation unit 200. The hydrogen charging unit is connected to the hydrogen storage unit to charge hydrogen into the storage unit. The hydrogen storage unit is connected to the hydrogen supply unit, which in turn is connected to the simulated fuel cell 100, allowing the storage unit to supply hydrogen to the simulated fuel cell 100 via the supply unit. The simulated fuel cell 100 is connected to the mass flow rate regulation unit 200, which can regulate the hydrogen consumption mass flow rate of the simulated fuel cell 100 to change the power of the simulated fuel cell 100. Therefore, during testing, the system simulates the gas consumption of the simulated fuel cell 100 under different operating conditions and the required gas consumption for calibration, making the test results closer to real-world operating conditions.

[0033] In one embodiment of the present invention, the fuel cell auxiliary testing system further includes an unloading unit. The unloading unit is connected to the hydrogen supply unit and the hydrogen storage unit, and is used to unload the hydrogen supply unit and the hydrogen storage unit.

[0034] For example, when the hydrogen storage unit experiences overheating, it can be connected to the unloading unit to release the hydrogen gas inside the storage unit. Alternatively, when the hydrogen supply unit experiences overpressure or requires system component maintenance, it can be connected to the unloading unit to vent the hydrogen gas from the supply unit through the unloading unit.

[0035] In one embodiment of the present invention, the hydrogen storage unit includes a plurality of hydrogen storage tanks 310 arranged in parallel. Each hydrogen storage tank 310 is equipped with a bottle-mouth combination valve 320. The hydrogen filling unit is connected to the corresponding hydrogen storage tank 310 via each bottle-mouth combination valve 320, and each hydrogen storage tank 310 is connected to the hydrogen supply unit via the corresponding bottle-mouth combination valve 320.

[0036] In one embodiment of the present invention, the bottle neck combination valve 320 includes a bottle neck check valve 321, a bottle neck solenoid valve 322, and a bottle neck shut-off valve 323.

[0037] The hydrogen storage tank 310 is connected to the bottle neck shut-off valve 323. The bottle neck check valve 321 and the bottle neck solenoid valve 322 are connected in parallel between the bottle neck shut-off valve 323 and the hydrogen charging unit and the hydrogen supply unit. The hydrogen charging unit can be connected to the bottle neck shut-off valve 323 through the bottle neck check valve 321, and the bottle neck shut-off valve 323 can be connected to the hydrogen supply unit through the bottle neck solenoid valve 322.

[0038] For example, such as Figure 1As shown, in this embodiment, the hydrogen storage unit includes two hydrogen storage tanks 310 arranged in parallel. Each hydrogen storage tank 310 is equipped with a bottle neck combination valve 320. The hydrogen filling unit passes through a level...

[0039] Taking one set of hydrogen storage tank 310 and bottle neck combination valve 320 as an example, the hydrogen storage tank 310 is provided with inlet and outlet ports. The inlet and outlet ports of the hydrogen storage tank 310 are connected to the bottle neck shut-off valve 323. The bottle neck one-way valve 321 and the bottle neck solenoid valve 322 are arranged in parallel, and the two are connected between the bottle neck shut-off valve 323 and the hydrogen filling unit and the hydrogen supply unit.

[0040] During the hydrogen charging process, the bottle neck shut-off valve 323 is in the normally open state, and the bottle neck solenoid valve 322 is in the closed state. The hydrogen in the hydrogen charging unit enters the hydrogen storage tank 310 through the bottle neck check valve 321 and the bottle neck shut-off valve 323.

[0041] During the hydrogen supply test, the bottle neck shut-off valve 323 is in the normally open state, and the bottle neck solenoid valve 322 is in the open state. The hydrogen in the hydrogen storage tank 310 is supplied to the hydrogen supply unit through the bottle neck shut-off valve 323 and the bottle neck solenoid valve 322.

[0042] In one embodiment of the present invention, the bottle neck combination valve 320 further includes a venting device 324 and a bottle valve temperature detection device 325. The bottle valve temperature detection device 325 is used to detect the internal temperature of the hydrogen storage tank 310. The venting device 324 is connected between the hydrogen storage tank 310 and the unloading unit. The venting device 324 and the bottle valve temperature detection device 325 are used to control the connection state between the hydrogen storage tank 310 and the unloading unit based on the detection result of the bottle valve temperature detection device 325.

[0043] For example, the cylinder valve temperature detection device 325 is a temperature sensor. This temperature sensor can detect the temperature of hydrogen gas inside the hydrogen storage tank 310. In one embodiment of the present invention, the venting device 324 includes a venting valve and a venting control module. The hydrogen storage tank 310 is provided with a vent, and the venting valve is connected between the vent and the unloading unit, which is used to control the communication state between the vent and the unloading unit. The venting control module is connected to the cylinder valve temperature detection device 325 and the venting valve, and the venting control module can control the working state of the venting valve based on the detection result of the cylinder valve temperature detection device 325. Specifically, when the cylinder valve temperature detection device 325 detects that the hydrogen gas inside the hydrogen storage tank 310 is overheating, the venting control module controls the venting valve to open, so as to vent the hydrogen gas inside the hydrogen storage tank 310.

[0044] In addition, a filter can be installed between the bottle neck shut-off valve 323 and the inlet and outlet of the hydrogen storage tank 310 to ensure the cleanliness of the hydrogen in the hydrogen storage tank 310.

[0045] In another embodiment of the present invention, the bottle neck combination valve 320 further includes an overflow valve 326 and a bottle valve pressure detection device 327, and the hydrogen filling unit includes a hydrogen filling check valve 910 and a hydrogen filling pressure detection device 920.

[0046] A hydrogen source is connected to a hydrogen filling check valve 910. The hydrogen filling check valve 910 is connected to a bottle opening check valve 321 and a bottle opening solenoid valve 322 via an overflow valve 326. A hydrogen filling pressure detection device 920 is installed between the hydrogen filling check valve 910 and the overflow valve 326. A bottle valve pressure detection device 327 is installed between the overflow valve 326 and the bottle opening check valve 321 and the bottle opening solenoid valve 322. The overflow valve 326 can adjust its opening degree based on the detection results of the bottle valve pressure detection device 327 and the hydrogen filling pressure detection device 920.

[0047] Hydrogen is supplied to the hydrogen storage tank 310 via a hydrogen filling check valve 910, a bottle neck check valve 321, and a bottle neck shut-off valve 323. A hydrogen filling pressure detection device 920 is installed at the inlet end of the overflow valve 326, and a bottle neck pressure detection device is installed at the outlet end of the overflow valve 326. The overflow valve 326 can adjust its opening degree based on the detection results of the hydrogen filling pressure detection device 920 and the bottle neck pressure detection device to prevent overpressure hydrogen filling from damaging the test system.

[0048] In one embodiment of the present invention, the hydrogen supply unit includes a hydrogen supply solenoid valve 410, a pressure reducing valve 420, a hydrogen supply shut-off valve 430, a hydrogen supply proportional valve 440, an ejector 450, a gas-liquid separator 460, and a hydrogen circulation pump 470.

[0049] Each hydrogen storage tank 310 is connected to a hydrogen supply solenoid valve 410 via a corresponding bottle-mouth combination valve 320. The hydrogen supply solenoid valve 410 is connected to a pressure reducing valve 420. The pressure reducing valve 420 is connected to a hydrogen supply shut-off valve 430. The hydrogen supply shut-off valve 430 is connected to a hydrogen supply proportional valve 440. The hydrogen supply proportional valve 440 is connected to the inlet end of the ejector 450. The outlet end of the ejector 450 is connected to the inlet end of the simulated fuel cell 100. The return end of the simulated fuel cell 100 is connected to a hydrogen circulation pump 470 via a gas-water separator 460. The hydrogen circulation pump 470 is connected to the return end of the ejector 450.

[0050] In one embodiment of the present invention, a pressure reducing valve 420 and a hydrogen supply shut-off valve 430 are provided with a pressure reducing device 510; a first flow rate detection device 610 and a first pressure detection device 520 are provided between the hydrogen supply proportional valve 440 and the inlet end of the ejector 450; a second flow rate detection device 620 and a second pressure detection device 530 are provided between the outlet end of the ejector 450 and the inlet end of the simulated fuel cell 100; a third flow rate detection device 630 and a third pressure detection device 540 are provided between the return end of the simulated fuel cell 100 and the gas-liquid separator 460; a fourth flow rate detection device 640 and a fourth pressure detection device 550 are provided between the gas-liquid separator 460 and the hydrogen circulation pump 470; and a fifth pressure detection device 560 is provided between the hydrogen circulation pump 470 and the return end of the ejector 450.

[0051] During the testing of the bottle neck combination valve 320, the bottle neck shut-off valve 323, bottle neck solenoid valve 322, hydrogen supply solenoid valve 410, and hydrogen supply shut-off valve 430 are opened. High-pressure hydrogen gas in the hydrogen storage tank 310 enters the pressure reducing valve 420 through these valves. After pressure reduction by the pressure reducing valve 420, it reaches the hydrogen supply proportional valve 440 through the hydrogen supply shut-off valve 430. By adjusting the mass flow rate regulating unit 200, the test conditions are changed, thereby enabling performance testing of the bottle neck combination valve 320 under different conditions. This performance testing includes, but is not limited to, testing the airtightness, switching performance, and lifespan of each component of the bottle neck combination valve 320. Furthermore, the bottle neck pressure detection device can also monitor the pressure of the bottle neck combination valve 320.

[0052] During the testing of pressure reducing valve 420, bottle neck shut-off valve 323, bottle neck solenoid valve 322, hydrogen supply solenoid valve 410 and hydrogen supply shut-off valve 430 are also opened. The pressure reducing performance is judged by the test results of hydrogen charging pressure detection device 920 and pressure reducing pressure detection device 510. In other words, the pressure reducing performance under different working conditions is determined based on the pressure comparison before and after pressure reducing valve 420.

[0053] During the testing of the hydrogen supply proportional valve 440, the bottle neck shut-off valve 323, bottle neck solenoid valve 322, hydrogen supply solenoid valve 410, and hydrogen supply shut-off valve 430 are opened. By adjusting the mass flow rate regulating unit 200, the mass flow rate in the pipeline can be adjusted, thereby measuring the performance of the hydrogen supply proportional valve 440 under different operating conditions. For example, the pressure-flow characteristics of the hydrogen supply proportional valve 440 can be determined by the first pressure detection device 520 and the first flow rate detection device 610.

[0054] During the testing of ejector 450, by opening the bottle neck shut-off valve 323, bottle neck solenoid valve 322, hydrogen supply solenoid valve 410, and hydrogen supply shut-off valve 430, and adjusting the mass flow rate adjustment unit 200, the mass flow rate in the pipeline can be adjusted, thereby measuring the performance of ejector 450 under different operating conditions. For example, the pressure-flow characteristics of ejector 450 can be determined by the second pressure detection device 530 and the second flow detection device 620.

[0055] During the testing of the gas-liquid separator 460, the bottle neck shut-off valve 323, bottle neck solenoid valve 322, hydrogen supply solenoid valve 410, and hydrogen supply shut-off valve 430 are opened. By adjusting the mass flow rate adjustment unit 200, the mass flow rate in the pipeline can be adjusted, thereby measuring the performance of the gas-liquid separator 460 under different operating conditions. For example, the pressure loss and flow resistance of the gas-liquid separator 460 can be determined by the third pressure detection device 540, the third flow detection device 630, the fourth pressure detection device 550, and the fourth flow detection device 640.

[0056] During the testing of the hydrogen circulation pump 470, the bottle neck shut-off valve 323, bottle neck solenoid valve 322, hydrogen supply solenoid valve 410, and hydrogen supply shut-off valve 430 are opened. By adjusting the mass flow rate adjustment unit 200, the mass flow rate in the pipeline can be adjusted, thereby measuring the performance of the hydrogen circulation pump 470 under different operating conditions. For example, the pressurization performance of the hydrogen circulation pump 470 can be determined by the fourth pressure detection device 550 and the fifth pressure detection device 560.

[0057] In addition, temperature sensors can be installed at the upstream and downstream locations of each component of the hydrogen supply unit to monitor the temperature at each location in real time during the test and prevent overheating.

[0058] In one embodiment of the present invention, such as Figure 1 As shown, the unloading unit includes an unloading check valve 720 and an unloading pipeline 710. The unloading check valve 720 is installed on the unloading pipeline 710. The outlet end of the pressure reducing valve 420 is connected to the unloading check valve 720 through a safety valve 730. A relief shut-off valve 740 is installed in parallel at the safety valve 730.

[0059] During testing, if the pressure of the hydrogen supply unit exceeds the set pressure of safety valve 730, safety valve 730 will open, allowing high-pressure hydrogen from hydrogen storage tank 310 to be discharged through safety valve 730 and unloading check valve 720. If the pressure of the hydrogen supply unit does not exceed the set pressure of safety valve 730, high-pressure hydrogen from hydrogen storage tank 310 can be supplied to the simulated fuel cell 100 through hydrogen supply shut-off valve 430, hydrogen supply proportional valve 440, and ejector 450. Furthermore, when system equipment maintenance is required, vent shut-off valve 740 can be opened to allow hydrogen in the hydrogen supply unit pipeline to be discharged through vent shut-off valve 740 and unloading check valve 720.

[0060] In one embodiment of the present invention, the mass flow rate regulating unit 200 includes a mass flow meter; the simulated fuel cell 100 is also provided with an exhaust shut-off valve 800, which is used to release the gas inside the simulated fuel cell 100.

[0061] The fuel cell auxiliary component testing system provided by this invention can meet the performance testing requirements of key components of the high-pressure hydrogen supply system, such as the bottle neck combination valve 320 and the pressure reducing valve 420. Simultaneously, it can also test components in the low-pressure end of the fuel cell, such as the hydrogen supply proportional valve 440, ejector 450, hydrogen circulation pump 470, and gas-liquid separator 460. It can test individual components or different combinations, and the testing system is flexible in its setup and can simulate complex systems. This testing system can simulate the gas consumption of the fuel cell stack under different operating conditions, making the test conditions closer to actual operating conditions, resulting in highly reliable test calibration results and accurate measurement data. By adjusting the volume of the simulated fuel cell 100, the internal space of fuel cells with different power ratings can be simulated. Combined with a downstream mass flow meter, the internal gas consumption of the fuel cell 100 can be simulated, thereby enabling precise control of the entire system.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fuel cell accessory testing system, characterized in that, include: Hydrogen charging unit, hydrogen storage unit, hydrogen supply unit, simulated fuel cell (100) and mass flow regulation unit (200); The hydrogen charging unit is connected to the hydrogen storage unit, the hydrogen storage unit is connected to the hydrogen supply unit, the hydrogen supply unit is connected to the simulated fuel cell (100), and the simulated fuel cell (100) is connected to the mass flow rate regulating unit (200). The hydrogen charging unit is used to charge the hydrogen storage unit with hydrogen, the hydrogen storage unit supplies hydrogen to the simulated fuel cell (100) via the hydrogen supply unit, and the mass flow rate regulating unit (200) is used to regulate the hydrogen consumption mass flow rate of the simulated fuel cell (100). The hydrogen storage unit includes multiple hydrogen storage tanks (310) arranged in parallel. Each hydrogen storage tank (310) is equipped with a bottle mouth combination valve (320). The hydrogen filling unit is connected to the corresponding hydrogen storage tank (310) through each bottle mouth combination valve (320). Each hydrogen storage tank (310) is connected to the hydrogen supply unit through the corresponding bottle mouth combination valve (320). The bottle neck combination valve (320) includes a bottle neck check valve (321), a bottle neck solenoid valve (322), and a bottle neck shut-off valve (323). The hydrogen storage tank (310) is connected to the bottle neck shut-off valve (323). The bottle neck check valve (321) and the bottle neck solenoid valve (322) are arranged in parallel between the bottle neck shut-off valve (323) and the hydrogen charging unit and the hydrogen supply unit. The hydrogen charging unit can be connected to the bottle neck shut-off valve (323) via the bottle neck check valve (321). The bottle neck shut-off valve (323) can be connected to the hydrogen supply unit via the bottle neck solenoid valve (322). The bottle neck combination valve (320) also includes an overflow valve (326) and a bottle valve pressure detection device (327), and the hydrogen filling unit includes a hydrogen filling check valve (910) and a hydrogen filling pressure detection device (920). A hydrogen source is connected to the hydrogen filling check valve (910). The hydrogen filling check valve (910) is connected to the bottle opening check valve (321) and the bottle opening solenoid valve (322) via the overflow valve (326). The hydrogen filling pressure detection device (920) is located between the hydrogen filling check valve (910) and the overflow valve (326). The bottle valve pressure detection device (327) is located between the overflow valve (326) and the bottle opening check valve (321) and the bottle opening solenoid valve (322). The overflow valve (326) can adjust its opening degree based on the detection results of the bottle valve pressure detection device (327) and the hydrogen filling pressure detection device (920).

2. The fuel cell accessory testing system according to claim 1, characterized in that, The fuel cell auxiliary component testing system also includes an unloading unit, which is connected to the hydrogen supply unit and the hydrogen storage unit and is used to unload the hydrogen supply unit and the hydrogen storage unit.

3. The fuel cell accessory testing system according to claim 2, characterized in that, The bottle neck combination valve (320) also includes a venting device (324) and a bottle valve temperature detection device (325). The bottle valve temperature detection device (325) is used to detect the internal temperature of the hydrogen storage tank (310). The venting device (324) is connected between the hydrogen storage tank (310) and the unloading unit. The venting device (324) and the bottle valve temperature detection device (325) are used to control the connection state between the hydrogen storage tank (310) and the unloading unit based on the detection result of the bottle valve temperature detection device (325).

4. The fuel cell accessory testing system according to claim 2 or 3, characterized in that, The hydrogen supply unit includes a hydrogen supply solenoid valve (410), a pressure reducing valve (420), a hydrogen supply shut-off valve (430), a hydrogen supply proportional valve (440), an ejector (450), a gas-liquid separator (460), and a hydrogen circulation pump (470). Each of the hydrogen storage tanks (310) is connected to the hydrogen supply solenoid valve (410) via the corresponding bottle neck combination valve (320). The hydrogen supply solenoid valve (410) is connected to the pressure reducing valve (420). The pressure reducing valve (420) is connected to the hydrogen supply shut-off valve (430). The hydrogen supply shut-off valve (430) is connected to the hydrogen supply proportional valve (440). The hydrogen supply proportional valve (440) is connected to the inlet end of the ejector (450). The outlet end of the ejector (450) is connected to the inlet end of the simulated fuel cell (100). The return end of the simulated fuel cell (100) is connected to the hydrogen circulation pump (470) via the gas-water separator (460). The hydrogen circulation pump (470) is connected to the return end of the ejector (450).

5. The fuel cell accessory testing system according to claim 4, characterized in that, A pressure reducing detection device (510) is provided between the pressure reducing valve (420) and the hydrogen supply shut-off valve (430). A first flow detection device (610) and a first pressure detection device (520) are provided between the hydrogen supply proportional valve (440) and the inlet end of the ejector (450). A second flow detection device (620) and a second pressure detection device (530) are provided between the outlet end of the ejector (450) and the inlet end of the simulated fuel cell (100). A third flow detection device (630) and a third pressure detection device (540) are provided between the return end of the simulated fuel cell (100) and the gas-water separator (460). A fourth flow detection device (640) and a fourth pressure detection device (550) are provided between the gas-water separator (460) and the hydrogen circulation pump (470). A fifth pressure detection device (560) is provided between the hydrogen circulation pump (470) and the return end of the ejector (450).

6. The fuel cell accessory testing system according to claim 5, characterized in that, The unloading unit includes an unloading check valve (720) and an unloading pipeline (710). The unloading check valve (720) is installed on the unloading pipeline (710). The outlet end of the pressure reducing valve (420) is connected to the unloading check valve (720) through a safety valve (730). A discharge shut-off valve (740) is installed in parallel at the safety valve (730).

7. The fuel cell accessory testing system according to any one of claims 1 to 3, characterized in that, The mass flow rate regulating unit (200) includes a mass flow meter; The simulated fuel cell (100) is also provided with an exhaust shut-off valve (800), which is used to release the gas inside the simulated fuel cell (100).

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