A hydrogen supply assembly testing device and testing method for a hydrogen fuel cell engine

Abstract

The application provides a hydrogen supply assembly testing device and testing method for a hydrogen fuel cell engine, which comprises a main path gas supply unit, a stack simulation unit, a gas simulation consumption unit, a hydrogen circulation unit, a gas discharge unit, a control device and a power supply device. The application has the beneficial effects that the hydrogen supply assembly testing device and testing method for the hydrogen fuel cell engine can quickly, safely and reliably complete the testing of the basic working characteristics of the hydrogen supply assembly, the pressure regulation characteristics of the hydrogen supply assembly can be tested through the cooperation of the gas simulation consumption unit and the gas discharge unit, and the system development risk and development cost are reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of hydrogen fuel cell testing, and particularly relates to a hydrogen fuel cell engine hydrogen supply assembly testing device and testing method. BACKGROUND

[0002] During the operation of the fuel cell system, water generated on the cathode side will always osmotically penetrate to the anode side, and water management on the anode side plays a crucial role in the performance of the fuel cell. The hydrogen supply assembly, as the core component of the hydrogen supply system of the fuel cell, provides hydrogen gas with a certain pressure and flow rate to meet the use requirements of the stack, and at the same time, circulates and transports the supersaturated hydrogen gas at the outlet of the stack to the inlet of the stack for humidification of the dry hydrogen gas at the inlet of the stack, with the characteristics of low cost and no parasitic power. The application of the hydrogen supply assembly realizes the pressure balance and recycling of hydrogen gas in the stack, which is beneficial to water balance management and improves the hydrogen utilization rate.

[0003] In the actual application of the hydrogen supply assembly in the fuel cell system, with the change of the working condition of the stack, the outlet pressure, hydrogen flow rate and relative humidity of the medium of the hydrogen supply assembly will change. Purely testing the working characteristics of the inlet flow rate and the hydrogen return port flow rate of the hydrogen supply assembly cannot truly reflect the working performance of the hydrogen supply assembly on the engine system. When selecting and matching the hydrogen supply assembly, enterprises often need to perform repeated verification tests on the actual fuel cell system, which increases the risk and development cycle of the test. Therefore, the development of a matching test device and testing method that can simulate the real working environment of the hydrogen supply assembly has great significance for the promotion and application of the hydrogen supply assembly. SUMMARY

[0004] Therefore, the present application aims to provide a hydrogen fuel cell engine hydrogen supply assembly testing device and testing method, which can simulate the real working environment of the hydrogen supply assembly in the engine and safely and reliably test the working characteristics and adjustment performance of the hydrogen supply assembly.

[0005] To achieve the above-mentioned purpose, the technical solution of the present application is as follows:

[0006] A hydrogen fuel cell engine hydrogen supply assembly testing device, comprising a main path gas supply unit, a stack simulation unit, a gas simulation consumption unit, a hydrogen circulation unit, a gas discharge unit, a control device and a power supply device.

[0007] The gas outlet end of the main path gas supply unit is connected to the main path gas inlet end of the measured hydrogen supply assembly, and is used to provide hydrogen gas meeting the inlet pressure requirements of the hydrogen supply assembly for the main path of the hydrogen supply assembly.

[0008] The inlet of the stack simulation unit is connected with the exhaust end of the hydrogen supply assembly of the measured object, the outlet a of the stack simulation unit is connected with the inlet of the gas simulation consumption unit, and the outlet b of the stack simulation unit is connected with the inlet of the hydrogen circulation unit, so as to simulate the volume and flow resistance of the stack.

[0009] The inlet of the gas simulation consumption unit is connected with the outlet b of the stack simulation unit, so as to simulate the hydrogen consumed in the actual operation process of the stack.

[0010] The outlet of the hydrogen circulation unit is connected with the hydrogen return end of the hydrogen supply assembly of the measured object, and the inlet of the hydrogen circulation unit is connected with the outlet b of the stack simulation unit, so as to circulate the hydrogen sucked back by the hydrogen supply assembly of the measured object and humidify the circulating hydrogen through the humidifying device.

[0011] The gas discharge unit is connected with the outlet b of the stack simulation unit, so as to simulate the pressure disturbance of the system in the pulse discharge process.

[0012] The control device and the power supply device are connected with the main road gas supply unit, the stack simulation unit, the gas simulation consumption unit, the hydrogen circulation unit and the gas discharge unit through a wire harness.

[0013] Further, the main road gas supply unit comprises a main road electromagnetic valve, a pressure controller, a flow meter, a pressure sensor and a temperature sensor connected in sequence.

[0014] The inlet of the main road electromagnetic valve is connected with the hydrogen source through a pipeline, and the flow meter is connected with the main road inlet of the hydrogen supply assembly of the measured object through a pipeline.

[0015] Further, the stack simulation unit comprises a pressure sensor, a temperature sensor, a stack volume simulator, a throttle valve, a pressure sensor and a temperature sensor connected in sequence.

[0016] The inlet of the stack simulation unit is connected with the exhaust port of the hydrogen supply assembly of the measured object, the outlet a of the stack simulation unit is connected with the gas simulation consumption unit, and the outlet b of the stack simulation unit is connected with the inlet of the gas discharge unit.

[0017] Further, the gas simulation consumption unit comprises a mass flow controller, an electromagnetic valve and a flame arrestor connected in sequence.

[0018] The inlet of the mass flow controller is connected with the outlet a of the stack simulation unit.

[0019] Further, the hydrogen circulation unit comprises a flow meter and a humidifying device connected in sequence.

[0020] The inlet of the flow meter is connected with the outlet b of the stack simulation unit through a pipeline, and the humidifying device is connected with the hydrogen return inlet of the hydrogen supply assembly of the measured object through a pipeline.

[0021] Further, the gas discharge unit comprises a tail discharge electromagnetic valve and a flame arrestor connected in sequence.

[0022] The inlet of the tail discharge electromagnetic valve is connected with the outlet b of the stack simulation unit.

[0023] Further, the control device is connected with the main gas supply unit, the stack simulation unit, the gas simulation consumption unit, the hydrogen circulation unit and the gas discharge unit.

[0024] Further, the power supply device supplies power to the control device and the main gas supply unit, the stack simulation unit, the gas simulation consumption unit, the hydrogen circulation unit and the gas discharge unit.

[0025] Further, the present application discloses a hydrogen fuel cell engine hydrogen supply assembly test method, which comprises the following steps.

[0026] According to the application object of the measured object hydrogen supply assembly, the inlet pressure of the hydrogen supply assembly and the pressure range of the outlet of the hydrogen supply assembly and the flow consumption range of the gas simulation consumption unit are determined, and a test working condition point is selected.

[0027] The main electromagnetic valve of the main gas supply unit is opened by the control device, the outlet pressure value of the pressure controller is set according to the inlet pressure of the hydrogen supply assembly;

[0028] The flow resistance of the stack is set by adjusting the opening degree of the throttle valve in the stack simulation unit according to the test working condition point, the flow consumption of the mass flow controller in the gas simulation consumption unit is set according to the working condition point, the humidifying device of the hydrogen circulation unit is adjusted, and the relative humidity value of the hydrogen is set.

[0029] When the test working condition is stable, the ratio of the flow meter of the hydrogen circulation unit to the flow meter of the hydrogen supply unit is recorded.

[0030] The tail discharge electromagnetic valve of the gas discharge unit is opened to generate a pressure disturbance, the fluctuation range and response time of the outlet pressure of the hydrogen supply assembly are tested, and then the adjustment characteristic test of the hydrogen supply assembly is performed.

[0031] Further, the present application discloses a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize a hydrogen fuel cell engine hydrogen supply assembly test method.

[0032] Compared with the prior art, the hydrogen fuel cell engine hydrogen supply assembly test device and test method has the following beneficial effects:

[0033] (1) The hydrogen fuel cell engine hydrogen supply assembly testing device and testing method can simplify the complex hydrogen supply system of the fuel cell engine, can simulate the real working environment of the hydrogen supply assembly in the fuel cell engine system, simulate the flow resistance of the stack during operation through a stack simulation unit, simulate the change of the relative humidity of hydrogen after passing through the stack through a humidification device, test the influence of the gas-liquid two-phase medium of the hydrogen return path of the hydrogen supply assembly on the injection performance of the hydrogen supply assembly, and simulate the ability of the hydrogen supply assembly to follow the load change of the stack by changing the flow consumption of the gas simulation consumption unit.

[0034] (2) The hydrogen fuel cell engine hydrogen supply assembly testing device and testing method can quickly, safely and reliably complete the testing of the basic working characteristics of the hydrogen supply assembly, can perform pressure regulation characteristic testing of the hydrogen supply assembly through the cooperation of the gas simulation consumption unit and the gas discharge unit, and reduce the system development risk and development cost. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which form a part of the present application, are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explanations rather than limiting the present application. In the drawings:

[0036] Figure 1 A hydrogen fuel cell engine hydrogen supply assembly testing device according to an embodiment of the present application.

[0037] Legend of reference signs:

[0038] 1 - main path gas supply unit; 11 - main path electromagnetic valve; 12 - pressure controller; 13 - flow meter; 14 - pressure sensor; 15 - temperature sensor; 2 - stack simulation unit; 21 - pressure sensor; 22 - temperature sensor; 23 - stack volume simulator; 24 - throttle valve; 25 - pressure sensor; 26 - temperature sensor; 3 - gas simulation consumption unit; 31 - mass flow controller; 32 - electromagnetic valve; 33 - flame arrestor; 4 - hydrogen circulation unit; 41 - flow meter; 42 - humidification device; 5 - gas discharge unit; 51 - tail discharge electromagnetic valve; 52 - flame arrestor; 6 - control device; 7 - power supply device; 8 - hydrogen supply assembly. DETAILED DESCRIPTION

[0039] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0040] The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] A hydrogen fuel cell engine hydrogen supply assembly testing device, comprising a main path gas supply unit 1, a stack simulation unit 2, a gas simulation consumption unit 3, a hydrogen circulation unit 4, a gas discharge unit 5, a control device 6 and a power supply device 7;

[0042] The main path gas supply unit 1 comprises a main path electromagnetic valve 11, a pressure controller 12, a flow meter 13, a pressure sensor 14 and a temperature sensor 15 connected in sequence. The inlet end of the main path electromagnetic valve 11 is connected to a hydrogen source through a pipeline, and the flow meter 13 is connected to the main path gas inlet end of the hydrogen supply assembly 8 of the measured object through a pipeline. The main path electromagnetic valve 11 is used to control the on-off of the gas path of the main path gas supply unit, and to cut off the main path gas source in emergency. The pressure controller 12 is used for the outlet pressure of the main path gas supply unit 1. The flow meter 13 is used to measure the flow of hydrogen circulating in the main path gas supply unit 1. The pressure sensor 14 and the temperature sensor 15 are used to measure the pressure and temperature of the main path gas supply.

[0043] The stack simulation unit 2 comprises a pressure sensor 21, a temperature sensor 22, a stack volume simulator 23, a throttle valve 24, a pressure sensor 25 and a temperature sensor 26 connected in sequence. The inlet end of the stack simulation unit 2 is connected to the exhaust port of the hydrogen supply assembly 8 of the measured object. The outlet a of the stack simulation unit 2 is connected to the gas simulation consumption unit 3, and the outlet b of the stack simulation unit 2 is connected to the inlet end of the gas discharge unit 3. The pressure sensor 21 and the temperature sensor 22 are used to measure the pressure and temperature of the exhaust port of the hydrogen supply assembly 8. The stack volume simulator 23 is used to simulate the volume of the stack and buffer the influence of pressure fluctuation on the test results. The throttle valve 24 is used to adjust the path of the hydrogen circulation loop, thereby simulating the pressure loss of the stack. The pressure sensor 25 and the temperature sensor 26 are used to monitor the pressure and temperature of the gas after flowing through the throttle valve.

[0044] The gas simulation consumption unit 3 comprises a mass flow controller 31, an electromagnetic valve 32 and a flame arrestor 33 connected in sequence. The inlet of the mass flow controller 31 is connected to the outlet a of the stack simulation unit 2. The mass flow controller 31 is used for air gas discharge, thereby simulating the hydrogen consumption of the stack. The electromagnetic valve 32 is used to cut off the path of the gas simulation consumption unit. The flame arrestor 33 is used to prevent backflow of fire after the exhaust port of the gas simulation consumption unit catches fire

[0045] The hydrogen circulation unit 4 comprises a flow meter 41 and a humidifying device 42 connected in sequence. The inlet of the flow meter is connected to the outlet b of the stack simulation unit through a pipeline, and the humidifying device is connected to the hydrogen inlet end of the hydrogen supply assembly of the measured object through a pipeline.

[0046] The flow meter 41 is used to measure the flow of hydrogen circulating in the hydrogen circulation unit, and the humidifying device 42 is used to humidify the hydrogen in the hydrogen return path.

[0047] The gas discharge unit 5 comprises a tail discharge electromagnetic valve 51 and a flame arrestor 52 connected in sequence. The inlet of the tail discharge electromagnetic valve 51 is connected with the outlet b of the stack simulation unit 2.

[0048] The tail discharge electromagnetic valve 51 is used to generate pressure disturbance for pulse discharge, and to test the pressure regulating characteristics of the hydrogen supply assembly 8. The flame arrestor 52 is used to prevent backflow of flame after the exhaust port of the gas discharge unit catches fire.

[0049] The control device 6 is used to control the electrical elements of the test device and to collect temperature, pressure and flow. The power supply device 7 is used to supply power to the electrical elements of the test device.

[0050] The test method of the hydrogen supply assembly test device for hydrogen fuel cell engine shown in Figure 1 The test method of the hydrogen supply assembly test device for hydrogen fuel cell engine shown in

[0051] (1) According to the application object of the hydrogen supply assembly 8 to be tested, determine the inlet pressure of the hydrogen supply assembly 8, the pressure range of the outlet of the hydrogen supply assembly 8 and the flow consumption range of the gas simulation consumption unit, and select the test working condition point.

[0052] (2) Open the main electromagnetic valve 11 of the main gas supply unit by the control device 6, and set the outlet pressure value of the pressure controller 12 according to the inlet pressure of the hydrogen supply assembly 8.

[0053] (3) Adjust the opening degree of the throttle valve 24 in the stack simulation unit 2 to set the flow resistance of the stack according to the test working condition point, and set the flow consumption of the mass flow controller 31 in the gas simulation consumption unit 3 according to the working condition point. Adjust the humidifier 42 of the hydrogen circulation unit 4 to set the relative humidity value of the hydrogen.

[0054] (4) When the test working condition is stable, record the ratio of the flow meter 41 of the hydrogen circulation unit 4 to the flow meter 13 of the hydrogen supply unit 1.

[0055] (5) Open the tail discharge electromagnetic valve 51 of the gas discharge unit 5 to generate pressure disturbance, test the fluctuation range and response time of the outlet pressure of the hydrogen supply assembly 8, and then test the pressure regulating characteristics of the hydrogen supply assembly 8.

[0056] Those skilled in the art can understand that the units and method steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been described in general terms in the above description. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0057] In several embodiments provided in the present application, it should be understood that the disclosed method and system can be implemented in other ways. For example, the division of the above-described units is only a logical function division, and actual implementation can have another division manner, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. The above units can be or can not be physically separated, and the components displayed as units can be or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment of the present application.

[0058] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.

[0059] The above only describes the preferred embodiments of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A hydrogen supply assembly testing device for a hydrogen fuel cell engine, characterized by: The main road gas supply unit (1), the stack simulation unit (2), the gas simulation consumption unit (3), the hydrogen circulation unit (4), the gas exhaust unit (5), the control device (6) and the power supply device (7) are connected through the wire harness; The gas outlet end of the main road gas supply unit (1) is connected with the main road gas inlet end of the hydrogen supply assembly (8) of the measured object, for providing hydrogen gas meeting the inlet pressure requirement of the hydrogen supply assembly (8) main road; The gas inlet end of the stack simulation unit (2) is connected with the gas exhaust end of the hydrogen supply assembly (8) of the measured object, the outlet a of the stack simulation unit (2) is connected with the inlet of the gas simulation consumption unit (3), and the outlet b of the stack simulation unit (2) is connected with the inlet of the hydrogen circulation unit (4), for simulating the volume and flow resistance of the stack; The inlet of the gas simulation consumption unit (3) is connected with the outlet b of the stack simulation unit (2), for simulating the hydrogen gas consumed in the actual operation process of the stack; The outlet of the hydrogen circulation unit (4) is connected with the hydrogen return end of the hydrogen supply assembly (8) of the measured object, the inlet of the hydrogen circulation unit (4) is connected with the outlet b of the stack simulation unit (2), and the hydrogen circulation unit (4) is used for circulating the hydrogen gas sucked back by the hydrogen supply assembly (8) of the measured object and humidifying the circulating hydrogen gas through the humidifying device (42); The gas exhaust unit (5) is connected with the outlet b of the stack simulation unit (2), for simulating the pressure disturbance of the system in the pulse exhaust process; The control device (6) and the power supply device (7) are connected with the main road gas supply unit (1), the stack simulation unit (2), the gas simulation consumption unit (3), the hydrogen circulation unit (4) and the gas exhaust unit (5) through the wire harness; The main road gas supply unit (1) comprises a main road electromagnetic valve (11), a pressure controller (12), a flow meter, a pressure sensor and a temperature sensor connected in sequence; The inlet end of the main road electromagnetic valve (11) is connected with the hydrogen source through a pipeline, and the flow meter is connected with the main road gas inlet end of the hydrogen supply assembly (8) of the measured object through a pipeline; The stack simulation unit (2) comprises a pressure sensor, a temperature sensor, a stack volume simulator (23), a throttle valve (24), a pressure sensor and a temperature sensor connected in sequence; The inlet end of the stack simulation unit (2) is connected with the gas exhaust port of the hydrogen supply assembly (8) of the measured object, the outlet a of the stack simulation unit (2) is connected with the gas simulation consumption unit (3), and the outlet b of the stack simulation unit (2) is connected with the inlet end of the gas exhaust unit (5).

2. The hydrogen supply assembly testing device for a hydrogen fuel cell engine according to claim 1, characterized by: The gas simulation consumption unit (3) comprises a mass flow controller (31), an electromagnetic valve (32) and a flame arrestor valve connected in sequence; The inlet of the mass flow controller (31) is connected with the outlet a of the stack simulation unit (2).

3. The hydrogen supply assembly testing device for a hydrogen fuel cell engine of claim 1, wherein: The hydrogen circulation unit (4) comprises a flow meter and a humidifying device (42) connected in sequence. The inlet of the flowmeter is connected with the outlet b of the stack simulation unit (2) through a pipeline, and the humidifying device is connected with the hydrogen return inlet of the hydrogen supply assembly (8) of the measured object through a pipeline.

4. The hydrogen supply assembly testing device for a hydrogen fuel cell engine of claim 1, wherein: The gas discharge unit (5) comprises a tail discharge electromagnetic valve (51) and a flame arrestor valve connected in sequence. The inlet of the tail discharge electromagnetic valve (51) is connected with the outlet b of the stack simulation unit (2).

5. The hydrogen supply assembly testing device for a hydrogen fuel cell engine of claim 1, wherein: The control device (6) is connected with the main path gas supply unit (1), the stack simulation unit (2), the gas simulation consumption unit (3), the hydrogen circulation unit (4) and the gas discharge unit (5).

6. The hydrogen supply assembly testing device for a hydrogen fuel cell engine of claim 1, wherein: The power supply device (7) supplies power to the control device (6), the main path gas supply unit (1), the stack simulation unit (2), the gas simulation consumption unit (3), the hydrogen circulation unit (4) and the gas discharge unit (5).

7. A method for testing a hydrogen supply assembly for a hydrogen fuel cell engine, and a testing apparatus for a hydrogen supply assembly for a hydrogen fuel cell engine according to any one of claims 1-6, characterized in that, The method comprises the following steps: According to the application object of the hydrogen supply assembly (8) of the measured object, the inlet pressure of the hydrogen supply assembly (8) and the pressure range of the outlet of the hydrogen supply assembly (8) and the flow consumption range of the gas simulation consumption unit (3) are determined, and a test working condition point is selected; The main electromagnetic valve (32) of the main path gas supply unit (1) is opened by the control device (6), and the outlet pressure value of the pressure controller (12) is set according to the inlet pressure of the hydrogen supply assembly (8); The flow resistance of the stack is set according to the opening degree of the throttle valve (24) in the stack simulation unit (2), the flow consumption of the mass flow controller (31) in the gas simulation consumption unit (3) is set according to the working condition point, the humidifying device (42) of the hydrogen circulation unit (4) is adjusted, and the relative humidity value of the hydrogen is set; When the test working condition is stable, the ratio of the flowmeter of the hydrogen circulation unit (4) to the flowmeter of the hydrogen supply unit is recorded; The tail discharge electromagnetic valve (51) of the gas discharge unit (5) is opened to generate a pressure disturbance, the fluctuation range and response time of the outlet pressure of the hydrogen supply assembly (8) are tested, and then the adjustment characteristic test of the hydrogen supply assembly (8) is performed.

8. A computer readable storage medium storing a computer program, characterized in that: The computer program is executed by the processor to realize the hydrogen supply assembly test method for the hydrogen fuel cell engine according to claim 7.

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