CN112349933A - Measurement and control platform and method for fuel cell air supply loop characteristics - Google Patents
Measurement and control platform and method for fuel cell air supply loop characteristics Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04305—Modeling, demonstration models of fuel cells, e.g. for training purposes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04335—Temperature; Ambient temperature of cathode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
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Abstract
The invention discloses a measurement and control platform and a test method for the characteristics of an air supply loop of a fuel cell, wherein an air system is stripped from the whole fuel system in a certain mode, a corresponding measurement and control platform integrating test and control is independently built, and the characteristic simulation under the actual working condition is realized by simulating the chemical parameters of a regulating valve, the volume, the pipe diameter, an electromagnetic valve and the like in the actual application; on one hand, the valve body and the pipe diameter characteristic matching in the gas path design can be realized, and on the other hand, the valve body and the pipe diameter characteristic matching can be used for calibrating the control parameters of the inlet air compression device and the exhaust end valve. The invention can simulate the main working characteristics of the air supply loop and has the characteristics of high reliability and low cost.
Description
Technical Field
The invention belongs to the technical field of application of hydrogen fuel cells, and relates to a measurement and control platform for chemical engineering and control characteristics of a cathode air supply loop of a fuel cell and a test method thereof.
Background
Proper operation of the fuel cell requires the cathode to provide excess oxygen, and if insufficient oxygen is available, the performance and life of the fuel cell can be greatly affected. The air supply system mainly provides oxygen required by the reaction for the cathode of the fuel cell, and ensures that the cathode has proper oxygen flow, oxygen pressure and proper humidity. In order to improve the performance of the fuel cell and ensure that the overall output net power of the fuel cell is optimal, an efficient utilization scheme of an air supply system needs to be designed.
The power consumption of the air system accounts for the most part of the power consumption of the auxiliary components of the whole fuel cell, and in order to ensure that the whole fuel cell system works in the optimal state, the air flow and the pressure of the air system need to be controlled. The control of the air flow and pressure mainly lies in the control of the air compressor and the exhaust end valve of the air supply system, and the cathode is ensured to be in the optimal working state.
However, in an actual fuel cell system, the air supply system has strong nonlinearity and strong parameter coupling, so that the control of the air supply system is difficult. This is mainly based on the following factors:
first, the pressure control of the air circuit is directly related to the pressure difference balance between the anode and cathode, which causes the damage of the stack when the pressure difference between the anode and cathode exceeds the tolerance limit of the proton exchange membrane.
Secondly, the air supply system is a large hysteresis system, and when the load current of the electric pile is disturbed, the response speed of the air flow and the pressure is slow, so that the electric pile is easy to be starved by oxygen, the performance of the electric pile is reduced, and the electric pile is even damaged.
Thirdly, in the practical application process, different air compression devices can be selected for the electric pile with different power requirements, and the performance difference of the air compression devices can cause the difference of the practical control schemes.
Fourthly, if the volume, the pipe diameter and the valve diameter of the chemical part are not matched, the flow and the pressure of the cathode can not be stabilized through control, and the air supply system is frequently adjusted.
Fifthly, the proper back pressure of the whole fuel system can improve the current density of the cell, and the research on the pressure of the air system entering and exiting the stack under the back pressure condition has great significance on the control of the whole system.
Disclosure of Invention
One of the objectives of the present invention is to provide a measurement and control platform for the characteristics of an air supply loop of a fuel cell, which realizes the simulation of conditions or working modes of backpressure, normal pressure, air filter blockage, load change, etc. of the air supply loop, so as to achieve the good effects of low cost, convenience test and analysis of chemical matching and control parameter calibration.
The technical scheme adopted by the invention for solving the technical problems is as follows: a measurement and control platform for fuel cell air supply loop characteristics comprises an air filtering device, an air compression device, a fuel cell stack simulation device based on a buffer tank, a fuel cell controller and a temperature/pressure/mass flow sensor; the rear end of the air filtering device is connected with an air compressing device; the air compression device comprises an air compressor and a motor, two branches are led out from the rear end of the air compression device through a ball valve I, one branch is connected with the front end of a buffer tank, the other branch is connected with an air outlet through a valve after being connected with a ball valve II, the opening degrees of the ball valve I and the ball valve II are both equal to the size of the minimum flow passage sectional area in the fuel cell stack, the volume of the buffer tank is equal to the volume of a cavity in the fuel cell stack, the rear end of the buffer tank is connected with a proportional valve, the consumption of air in the stack can be simulated by adjusting the proportional valve, and the proportional valve is connected with; the fuel cell controller is connected with the air compression device, the proportional valve, the valve and the temperature/pressure/mass flow sensor, can adjust the air flow entering the fuel cell stack simulation device by controlling the rotating speed of the motor, plays a role in controlling the air flow and the pressure, and meets the flow and pressure requirements of various fuel cells under different working conditions.
The fuel cell controller of the measurement and control platform for the characteristics of the air supply loop of the fuel cell comprises a central control unit, an analog input and output module, a digital input and output module, a CAN communication module, a PWM control module, a power supply module, a power output module and a data storage module; the analog quantity input and output module is used for controlling the temperature/pressure/mass flow sensor and collecting data, the CAN communication module and the PWM control module are used for controlling the rotating speed of the motor, the other path of PWM with power driving capacity is used for controlling the opening degree of a proportional valve of the fuel cell stack analog device, a valve at an exhaust end CAN be controlled by PWM/DO/AO and the like according to model selection, the power supply module and the power output module are used for supplying power to the controller and other parts needing power supply and serving as reference voltages of part sampling signals, and the data storage module is used for storing various data in the experimental process, so that subsequent analysis and research are facilitated.
A measurement and control platform of fuel cell air supply return circuit characteristic, its temperature/pressure/mass flow sensor is including connecting temperature sensor, pressure sensor and the flowmeter I between air filter equipment and air compression device, connect temperature sensor, pressure sensor between air compression device and ball valve I, connect the pressure sensor between ball valve I, ball valve II and buffer tank, connect temperature sensor, pressure sensor and the flowmeter II of connecting in proportional valve exit between ball valve II and valve.
The valve of the measurement and control platform for the characteristics of the air supply loop of the fuel cell is a throttle valve.
The second purpose of the invention is to provide a test method of the measurement and control platform, which mainly performs the test in the following two working modes:
when in a back pressure working mode, the fuel cell controller controls the opening of a valve at an exhaust end to simulate a back pressure environment; the fuel cell controller controls the rotating speed of the motor and regulates the air inlet flow; simulating the volume of a cavity in the fuel cell stack by using a buffer tank; the fuel cell controller controls the opening of the proportional valve, adjusts the gas flow discharged by the buffer tank, and simulates the gas consumption of the current fuel cell stack;
in the normal pressure working mode, the fuel cell controller controls the exhaust end valve to be fully opened; the fuel cell controller controls the rotating speed of the motor and regulates the air inlet flow; simulating the volume of a cavity in the fuel cell stack by using a buffer tank; the fuel cell controller controls the opening of the proportional valve, adjusts the gas flow discharged by the buffer tank, and simulates the gas consumption of the current fuel cell stack.
The method for testing the characteristics of the air supply loop of the fuel cell further comprises simulating the blockage condition of the air inlet by methods such as blocking the inlet of the air filter device aiming at the air filter device, and researching the corresponding characteristics under the condition.
The invention has the beneficial effects that:
the method comprises the following steps of 1, aiming at an air supply system, building a measurement and control platform of an air supply loop of the fuel cell, separating characteristic test and control parameter calibration of the air supply system from the measurement and control platform of the fuel cell, and independently researching relevant performance characteristics of the air supply system.
2, the measurement and control platform is built by the components such as pipelines, valves and air compression devices, the building is simple, the complex structural design is not involved, and the defect that the experiment platform is difficult to build is overcome. Meanwhile, the fuel cell stack is simulated through the fuel cell simulator, and a real fuel cell stack does not need to be added into an experimental platform, so that the research cost is greatly saved.
3, the measurement and control platform can simulate different power fuel cell galvanic piles to research air circuit performance characteristics by replacing air compressor models, buffer tank volumes, ball valve opening degrees and the like, overcomes the defect that different test systems need to be built for different galvanic piles in the prior art, and plays a positive role in the research of a fuel cell engine system under the actual working condition.
4, the measurement and control platform can simulate different situations in actual working conditions by changing different test conditions, such as air filter blockage, back pressure and the like, so that various parameters of the air system are recorded. Through the analysis of parameters and experimental conditions, the research on the modeling and control method of the air system is promoted to a certain extent.
And 5, by adding and deleting, replacing, modifying and the like of the measurement and control platform components, the research on the characteristics of the air supply system under different application scenes can be realized, and the flexibility of the air circuit matching characteristic test can be realized.
The measurement and control platform effectively simulates the flow-volume-pressure characteristics of the air supply system, and provides a safe, reliable and effective experimental test environment for the model selection and control parameter debugging of the air compression device and the outlet valve;
and 7, selecting the controller according to the actual platform construction condition, and selecting the controller with the matched port.
Drawings
FIG. 1 is a schematic diagram of the system components of the present invention;
FIG. 2 is a diagram of the back pressure mode of operation of the present invention;
fig. 3 is a diagram of the normal pressure operation mode of the present invention.
The figures are numbered: the system comprises an air filtering device, an air compressing device, a fuel cell stack simulating device, a buffer tank, a fuel cell controller, a flow meter I, a flow meter II, a ball valve I, a ball valve II, a proportional valve 15, a valve 16, a temperature sensor T1/T2/T3/T4 and a pressure sensor P1/P2/P3/P4.
Detailed Description
The following description of the embodiments of the present invention is provided in order to better understand the present invention for those skilled in the art with reference to the accompanying drawings. It is to be expressly noted that in the following description, a detailed description of known functions and designs will be omitted when it may obscure the subject matter of the present invention.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in the actual form; in the present embodiment, the terms "front", "rear", "left", "right", "middle", and the like indicate the description of the orientation or positional relationship based on only the orientation or positional relationship shown in the drawings for the purpose of convenience of description and simplification of description, and should not be construed as limiting the present invention.
The air system is stripped from the whole fuel system in a certain mode, a corresponding test and control integrated measurement and control platform is independently built, and the characteristic simulation under the actual working condition is realized by simulating the chemical parameters of a regulating valve, the volume, the pipe diameter, an electromagnetic valve and the like in the actual application; on one hand, the valve body and the pipe diameter characteristic matching in the gas path design can be realized, and on the other hand, the valve body and the pipe diameter characteristic matching can be used for calibrating the control parameters of the inlet air compression device and the exhaust end valve.
Referring to fig. 1, the measurement and control platform for fuel cell air supply loop characteristics disclosed by the invention mainly comprises an air filtering device 1, an air compressing device 2, a fuel cell stack simulation device 3 based on a buffer tank 4 and a fuel cell controller 5.
The rear end of the air filtering device 1 is connected with the air compressing device 2 after being sequentially connected with the temperature sensor T1, the pressure sensor P1 and the flowmeter I11, and the temperature sensor T1 and the pressure sensor P1 are used for recording the temperature and the pressure at the inlet end of the air system.
The air compression device 2 comprises an air compressor (air pump), a motor and the like which can compress air and is used for compressing air to an air flow channel, the rear end of the air compression device 2 is sequentially connected with a temperature sensor T2 and a pressure sensor P2 and then connected with a ball valve I13, two branches are led out, one branch is connected with the front end of the buffer tank 4, the other branch is connected with an air outlet through a valve 16 after being sequentially connected with a pressure sensor P3, a ball valve II 14, a temperature sensor T3 and a pressure sensor P4 so as to collect corresponding data, the opening degrees of the ball valve I13 and the ball valve II 14 are equal and equal to the size of the minimum flow channel sectional area in the fuel cell stack, the volume of the buffer tank 4 is equal to the volume of a cavity in the fuel cell stack, the rear end of the buffer tank 4 is connected with a proportional valve 15, and the air consumption in the stack can be simulated by, the proportional valve 15 is connected with a gas consumption outlet through a flow meter II 12. The sensors are respectively used for detecting the temperature pressure and the flow of the air inlet and the temperature pressure and the flow of the air outlet, and the valve at the outlet is used for controlling the pressure and the flow inside the fuel cell stack simulation device 3 to play a role in adjusting the quantity of the outlet gas and the pressure inside the stack.
The fuel cell controller 5 has the functions of collecting data of the whole measurement and control platform and sending out corresponding control instructions, CAN control the rotating speed of a motor through a CAN/PWM module to adjust the air flow entering the fuel cell stack simulation device 3, has the function of controlling the air flow and the pressure, and meets the flow and pressure requirements of various fuel cells under different working conditions, and comprises a central control unit (MCU), an analog input and output module, a digital input and output module, a CAN communication module, a PWM control module, a power supply output module and a data storage module; the analog input/output module is used for controlling the temperature/pressure/mass flow sensor and collecting data, the CAN communication module and the PWM control module are used for controlling the rotating speed of a motor, the other path of PWM with power driving capability is used for controlling the opening of a proportional valve 15 in the fuel cell stack simulation device 3, a valve 16 at an exhaust end CAN be controlled by PWM/DO/AO and the like according to model selection, the power supply module and the power output module are used for supplying power to the controller and other parts needing power supply and serving as reference voltages of part sampling signals, and the data storage module is used for storing various data in the experimental process, so that subsequent analysis and research are facilitated.
The measurement and control platform realizes the simulation of conditions or working modes of air supply loop backpressure, normal pressure, air filter blockage, load change and the like through the combination of an air filtering device 1, an air compressing device 2, a fuel cell stack simulation device 3, a fuel cell controller 5 and various temperature pressure and mass flow sensors, pipeline connectors, valves and chemical pipelines so as to achieve the good effects of low cost and convenience test and analysis of chemical matching and control parameter calibration
According to the power grade of a galvanic pile to be simulated and the minimum sectional area of a flow channel, a buffer tank 4 with the same volume is selected, a ball valve I13 and a ball valve II 14 are adjusted to the diameter equal to the minimum sectional area of the flow channel, in order to achieve the actual control and performance evaluation effects, the values of temperature sensors T1-T4 and the values of pressure sensors P1-P4 are respectively connected into a system controller through AI channels, a proportional valve 15 is controlled by the system controller through a PWM output port with power driving capability, an air compression device 2 CAN select an air pump or an air compressor and the like according to the power requirement, the control is carried out through a PWM port with power driving capability of the system controller or through a CAN communication port, an outlet valve 16 for controlling the internal pressure of a measurement and control platform CAN select a throttle valve and the like, and the PWM port of the controller is used for control.
The invention discloses a method for testing the characteristics of an air supply loop of a fuel cell, which realizes the following two modes by controlling the opening of an outlet end valve 16:
a) the back pressure working mode is as follows: as shown in fig. 2, the opening angle of the tail end valve 16 is adjusted by a controller to control the pressure inside the pipeline, and the gas flow consumed by the fuel cell stack is realized by setting the opening degree of the proportional valve 15; the gas flow rate entering the reactor is realized by adjusting the rotating speed of the air compression device 2, and the pressure in the reactor is related to the volume of the buffer tank 4, the gas flow rate difference of the inlet and the outlet and the opening degree of the valve 16 at the outlet.
b) The normal pressure working mode is as follows: as shown in fig. 3, the end valve 16 is fully open; the gas flow consumed by the fuel cell stack is realized by setting the opening of the proportional valve 15, and the load change can be simulated by adjusting the opening of the proportional valve 15; the flow rate of the gas entering the pile is realized by adjusting the rotating speed of the air compression device 2.
The specific implementation steps are as follows.
1) The method is operated in a backpressure working mode, the rotating speed of an air compressor is changed to a certain value, the opening degree of a proportional valve 15 is adjusted to a corresponding opening degree, the consumption of the galvanic pile is kept unchanged, the opening degree of an outlet valve 16 is adjusted, temperature and pressure data are obtained, and the relation between the pressure and the temperature of an inlet pile and the outlet valve 16 under a specific flow state is analyzed.
2) And when the reactor operates in a back pressure/normal pressure working mode, the valve 16 at the outlet is kept unchanged, the proportional valve 15 is set to a certain opening degree and is kept unchanged, the rotating speed of the air compression device 2 is adjusted, temperature and pressure data are obtained, and the relation between the pressure and the temperature of the reactor and the rotating speed of the air compression device 2 is analyzed.
3) And when the air compressor operates in a back pressure/normal pressure working mode, the opening of the proportional valve 15 is adjusted to simulate load change, and the control parameters of the air compressor 2 are corrected according to parameters such as response time, overshoot and steady-state error of the air compressor 2.
4) And the air filter device 1 is blocked when the air compressor runs in a back pressure/normal pressure working mode, the proportional valve 15 is changed to simulate the load consumption of the electric pile, and the response characteristic of the air compressor 2 is researched.
Through the application of the measurement and control platform, on one hand, the measurement and control platform is used for researching the response characteristic of the air compression device 2 and calibrating the control parameter of the air compression device 2, and the measurement and control platform is effectively helpful for reducing the response time of an air system and improving the overall performance of a galvanic pile in actual operation; in addition, the back pressure characteristic analysis can improve the power density of the fuel cell and improve the performance of the fuel cell. In addition, better chemical characteristic matching can be obtained, and design basis is provided for the selection and the configuration of the valve diameter, the pipe diameter and the pressure stabilizing buffer tank 4.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered in the claims of the present invention.
Also, while for purposes of simplicity of explanation, the various method embodiments described above are shown as a series of acts or combination, it will be appreciated by those skilled in the art that the present invention is not limited by the illustrated ordering of acts, as some steps may occur in other orders or concurrently in accordance with the invention.
Claims (6)
1. The utility model provides a measurement and control platform of fuel cell air supply return circuit characteristic which characterized in that: the system comprises an air filtering device (1), an air compressing device (2), a fuel cell stack simulation device (3) based on a buffer tank (4), a fuel cell controller (5) and a temperature/pressure/mass flow sensor;
the rear end of the air filtering device (1) is connected with an air compression device (2);
the air compression device (2) comprises an air compressor and a motor, two branches are led out from the rear end of the air compression device (2) through a ball valve I (13), one branch is connected with the front end of a buffer tank (4), the other branch is connected with an air outlet through a valve (16) after being connected with a ball valve II (14), the opening degrees of the ball valve I (13) and the ball valve II (14) are both equal to the size of the minimum flow passage sectional area in the fuel cell stack, the volume of the buffer tank (4) is equal to the volume of a cavity in the fuel cell stack, a proportional valve (15) is connected with the rear end of the buffer tank (4), the consumption of the interior of the stack to air is simulated by adjusting the proportional valve (15), and the proportional valve (15) is connected with a gas consumption;
the fuel cell controller (5) is connected with the air compression device (2), the proportional valve (15), the valve (16) and the temperature/pressure/mass flow sensor, and the air flow entering the fuel cell stack simulation device (3) is adjusted by controlling the rotation speed of the motor so as to meet the flow and pressure requirements of various fuel cells under different working conditions.
2. The measurement and control platform for the characteristics of the air supply loop of the fuel cell as claimed in claim 1, wherein the fuel cell controller (5) comprises a central control unit, an analog input and output module, a digital input and output module, a CAN communication module, a PWM control module, a power supply module, a power output module and a data storage module; the analog input and output module is used for controlling the temperature/pressure/mass flow sensor and collecting data, the CAN communication module and the PWM control module are used for controlling the rotating speed of the motor and the opening degree of the proportional valve (15), the power supply module and the power output module are used for supplying power and serving as reference voltages of component sampling signals, and the data storage module is used for storing various data in the experimental process, so that the subsequent analysis and research are facilitated.
3. The measurement and control platform for the characteristics of the air supply loop of the fuel cell as claimed in claim 1, wherein the temperature/pressure/mass flow sensors comprise a temperature sensor (T1), a pressure sensor (P1) and a flow meter I (11) which are connected between the air filtering device (1) and the air compressing device (2), a temperature sensor (T2) and a pressure sensor (P2) which are connected between the air compressing device (2) and the ball valve I (13), a pressure sensor (P3) which is connected between the ball valve I (13), the ball valve ii (14) and the buffer tank (4), a temperature sensor (T3) and a pressure sensor (P4) which are connected between the ball valve ii (14) and the valve (16), and a flow meter ii (12) which is connected at the outlet of the proportional valve (15).
4. A fuel cell air supply circuit characterization measurement and control platform according to claim 1, 2 or 3, characterized in that the valve (16) is a throttle valve.
5. A method for testing the measurement and control platform according to claim 1, comprising the steps of:
when in the back pressure working mode, the fuel cell controller (5) controls the opening of the valve (16) to simulate a back pressure environment; the fuel cell controller (5) controls the rotating speed of the motor and regulates the air inlet flow; simulating the volume of a cavity in the fuel cell stack through a buffer tank (4); the fuel cell controller (5) controls the opening of the proportional valve (15), adjusts the gas flow discharged by the buffer tank (4), and simulates the current gas consumption of the fuel cell stack;
in the normal pressure working mode, the fuel cell controller (5) controls the valve (16) to be fully opened; the fuel cell controller (5) controls the rotating speed of the motor and regulates the air inlet flow; simulating the volume of a cavity in the fuel cell stack through a buffer tank (4); the fuel cell controller (5) controls the opening of the proportional valve (15), adjusts the gas flow discharged by the buffer tank (4), and simulates the current gas consumption of the fuel cell stack.
6. A method for testing the characteristics of a fuel cell air supply circuit according to claim 5, characterized in that the condition of air inlet blockage is simulated by blocking the inlet of the air filter device (1).
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| CN113959486A (en) * | 2021-09-18 | 2022-01-21 | 江苏凌氢新能源科技有限公司 | Single-tank type air inlet and outlet simulation system for fuel cell system and control method thereof |
| CN113964347A (en) * | 2021-10-21 | 2022-01-21 | 上海重塑能源科技有限公司 | Air supply integrated device of multi-stack fuel cell system and working method thereof |
| CN114094149A (en) * | 2021-09-30 | 2022-02-25 | 东风汽车集团股份有限公司 | Fuel cell pressurization control system and method |
| CN114497633A (en) * | 2022-02-24 | 2022-05-13 | 煤炭科学研究总院有限公司 | Fuel cell air supply system and control method |
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| CN113959486A (en) * | 2021-09-18 | 2022-01-21 | 江苏凌氢新能源科技有限公司 | Single-tank type air inlet and outlet simulation system for fuel cell system and control method thereof |
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| CN114094149A (en) * | 2021-09-30 | 2022-02-25 | 东风汽车集团股份有限公司 | Fuel cell pressurization control system and method |
| CN114094149B (en) * | 2021-09-30 | 2023-12-19 | 东风汽车集团股份有限公司 | Fuel cell pressurization control system and method |
| CN113964347A (en) * | 2021-10-21 | 2022-01-21 | 上海重塑能源科技有限公司 | Air supply integrated device of multi-stack fuel cell system and working method thereof |
| CN114497633A (en) * | 2022-02-24 | 2022-05-13 | 煤炭科学研究总院有限公司 | Fuel cell air supply system and control method |
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