CN112701326A - Fuel cell stack durability accelerated test method and durability accelerated test device - Google Patents

Fuel cell stack durability accelerated test method and durability accelerated test device Download PDF

Info

Publication number
CN112701326A
CN112701326A CN202110014477.5A CN202110014477A CN112701326A CN 112701326 A CN112701326 A CN 112701326A CN 202110014477 A CN202110014477 A CN 202110014477A CN 112701326 A CN112701326 A CN 112701326A
Authority
CN
China
Prior art keywords
fuel cell
cell stack
valve
temperature
coolant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110014477.5A
Other languages
Chinese (zh)
Inventor
罗马吉
赵岩
秦超超
陈奔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan University of Technology WUT
Original Assignee
Wuhan University of Technology WUT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan University of Technology WUT filed Critical Wuhan University of Technology WUT
Priority to CN202110014477.5A priority Critical patent/CN112701326A/en
Publication of CN112701326A publication Critical patent/CN112701326A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385—Arrangements for measuring battery or accumulator variables
    • G01R31/386—Arrangements for measuring battery or accumulator variables using test-loads
    • 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
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
    • 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
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04029—Heat exchange using liquids
    • 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
    • H01M8/0438—Pressure; Ambient pressure; Flow
    • H01M8/04388—Pressure; Ambient pressure; Flow of anode reactants at the inlet or inside the fuel cell
    • 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
    • H01M8/0438—Pressure; Ambient pressure; Flow
    • H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
    • 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
    • H01M8/04664—Failure or abnormal function
    • H01M8/04679—Failure or abnormal function of fuel cell stacks
    • 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
    • H01M8/04701—Temperature
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Abstract

The invention belongs to the technical field of fuel cell detection, and discloses an accelerated durability test method and an accelerated durability test device for a fuel cell stack, which aim to solve the problems that the existing test method cannot realize the function of quickly increasing or decreasing the temperature of the stack during accelerated working condition test, and cannot consider the influence of the quick change of the working temperature of the stack on the durability; controlling the supply of anode reaction gas by adopting a multi-nozzle hydrogen ejector, and controlling the supply of cathode reaction gas by utilizing an air flow controller in combination with a control strategy; and adjusting and controlling the working temperature of the fuel cell stack and the supply temperature of the reaction gas under the accelerated aging working condition in real time by using a temperature control system. And obtaining the durability acceleration test result of the fuel cell stack through the control process. The invention realizes the functions of supplying reaction gas and quickly adjusting the working temperature of the fuel cell stack under the accelerated aging working condition, so that the accelerated durability test system of the fuel cell stack can be used for accelerated aging test to obtain an accurate test result.

Description

Fuel cell stack durability accelerated test method and durability accelerated test device
Technical Field
The invention belongs to the technical field of fuel cell detection, and particularly relates to an accelerated durability test method and an accelerated durability test device for a fuel cell stack.
Background
At present, the fuel cell has the advantages of no pollution, high energy conversion efficiency, high starting speed, small vibration in the working process, low working temperature compared with an internal combustion engine and the like. Fuel cells also have difficulties limiting their commercial use, and one of the most critical issues is fuel cell life, i.e., durability. The service life of the fuel cell stack and the mechanism of durability attenuation can be well known through various durability tests of the fuel cell stack, and the method contributes to prolonging the service life of the fuel cell stack. The durability test of the fuel cell stack is extremely time-consuming, usually requires thousands of hours of measurement, and also consumes manpower and material resources, which brings great limitation to the durability test of the fuel cell stack.
The load working condition in the fuel cell stack durability test has two conditions: steady state and dynamic. Various attenuations can appear in the long-term operation of fuel cell pile under the dynamic load operating mode, and the durability test of the dynamic load simulating the real operating mode of the vehicle can reflect the actual situation better. Different dynamic conditions can cause different attenuation speeds, and the method is undoubtedly significant for durability research if the attenuation speed is faster under the condition of changing the dynamic conditions and finally the same attenuation effect is achieved in a shorter time. The prior patent CN111082093A discloses a hydrogen fuel cell durability test system and an operating method, which can test the durability of the fuel cell, but the load change frequency of the durability acceleration test is faster, the change range is larger, and the stack operating conditions also change rapidly, such as gas flow, operating temperature, and operating pressure, so that the test system needs to be improved. In the prior art, the aspect of the durability accelerated test is not mentioned, and in order to shorten the durability test time, a fuel cell stack durability accelerated test system and a working method thereof need to be designed.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) the durability test of the fuel cell stack is extremely time-consuming, generally requires thousands of hours of measurement, and also consumes manpower and material resources, which brings great limitation to the durability test of the fuel cell stack. When the existing fuel cell stack testing system and device are used for the accelerated test of the stack, the supply of reaction gas is delayed and untimely, the time required for temperature control and adjustment is long when the temperature of the stack needs to be greatly changed, and the accelerated test result of the durability of the stack is inaccurate due to the problems.
(2) The existing electric pile testing system and method mainly aim at steady state performance testing, when used for constant current electric pile durability testing, the working parameters such as reaction gas flow, working temperature, working pressure, inlet air humidity and the like are stable and can be well controlled, when used for dynamic working condition durability testing, the working parameters can generate transient change to influence the electric pile performance and further influence the electric pile durability testing result, under the condition of electric pile durability acceleration working condition testing, the existing testing system and method can not meet the requirement of quick response of the testing to the working parameters, the durability testing result can not completely reflect the influence of the acceleration working condition on the electric pile durability, particularly, the existing testing system and method can not realize the function of quickly increasing or reducing the electric pile temperature when in the acceleration working condition testing, and can not consider the influence of the quick change of the electric pile working temperature on the durability, the function is needed by the research of the accelerated test of the durability of the electric pile in the future.
The significance of solving the problems and the defects is as follows:
the invention designs an accelerated test system and device for the durability of the fuel cell stack according to the requirements of the accelerated test of the fuel cell stack on the control of reaction gas and the rapid regulation of temperature, provides a corresponding test method, provides a solution for the accelerated test of the durability of the stack, and eliminates the influence of the supply delay of the reaction gas and the slow regulation of temperature on the inaccurate test result of the durability of the stack.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an accelerated durability test method and an accelerated durability test device for a fuel cell stack.
The invention is realized in such a way that a fuel cell stack durability accelerated test method comprises the following steps:
controlling the supply of anode reaction gas by adopting a multi-nozzle hydrogen ejector, and controlling the supply of cathode reaction gas by utilizing an air flow controller in combination with a control strategy;
the temperature control system is used for adjusting and controlling the working temperature of the fuel cell stack and the supply temperature of the reaction gas under the accelerated aging working condition in real time;
the durability acceleration test result of the fuel cell stack is accurately obtained through the control process.
Further, the controlling the supply of the anode reactant gas with the multi-nozzle hydrogen injector includes;
step 1, performing nitrogen purging, closing a hydrogen air channel by using a first three-way valve and a second three-way valve, and formally operating the fuel cell after the nitrogen purging is finished;
step 2, providing air by a high-pressure air source, passing the air through a first three-way valve, a first pressure reducing valve, a first filter, an air flow controller and a first humidifier to the inside of the fuel cell stack, and finally discharging tail gas through a first back pressure valve;
and 3, providing hydrogen by a high-pressure hydrogen source, enabling the hydrogen to pass through a second three-way valve, a second pressure reducing valve, a second filter and a multi-nozzle hydrogen ejector, enabling a second humidifier to reach the inside of the fuel cell stack, and recovering tail gas generated at the anode of the fuel cell stack through a hydrogen recovery system to finally enter a hydrogen branch.
Further, a method for controlling cathode reactant gas supply using an air flow controller in combination with a control strategy includes:
firstly, setting the initial cathode reaction gas supply quantity to be far greater than the actual demand quantity when the fuel cell is in formal operation, and controlling the air flow controller to provide air according to the set initial cathode reaction gas supply quantity;
and secondly, monitoring and analyzing the working condition change of the electronic load by the data acquisition module and the control module, and sending a control signal to the multi-nozzle hydrogen ejector and the air flow controller to enable the gas supply amount to meet the requirement of the required actual gas supply amount.
Further, the required theoretical air supply quantity is determined according to the current density required by the electronic load, and the required actual air supply quantity is obtained by multiplying the theoretical air supply quantity by an excess coefficient;
the air flow controller adopts an excess coefficient not less than 2.5 on the cathode side, and when the current density of the working condition is changed from low to high, a feed-forward adjusting method is adopted, and the gas flow is changed in advance by 10 s.
Further, the adjusting and controlling of the working temperature of the fuel cell stack and the supply temperature of the reaction gas under the accelerated aging working condition in real time by using the temperature control system comprises:
(1) the coolant is driven by an electronic control circulating pump to enter a coolant channel inside the fuel cell stack, the coolant is provided by a first coolant storage tank, and a second valve is closed at the moment;
(2) when the coolant needs to be heated to enable the temperature of the electric pile to quickly reach the working requirement, the heater heats the coolant and then conveys the coolant to a coolant flow passage of the fuel cell, at the moment, a third valve is closed, the coolant directly enters the electric pile through a third bypass pipeline without passing through a radiator, and an electronic fan is closed;
(3) when the coolant does not need to be heated, the heater does not work, the third valve is opened at the moment, the coolant passes through the radiator, and the electronic fan is opened;
(4) when the galvanic pile is cooled, the first valve and the first electronic fan are closed, the second valve and the second electronic fan are opened, and at the moment, the temperature of the coolant of the second temperature control subsystem is the same as the room temperature, so that the galvanic pile is cooled.
In the invention, when the fuel cell stack has hydrogen leakage or abnormal voltage fluctuation, the system judges that the fuel cell stack has a dangerous condition, the alarm device gives an alarm, simultaneously the system cuts off the supply of hydrogen and air, and opens a nitrogen channel to purge the fuel cell stack so as to protect the fuel cell stack;
in the invention, the electrochemical workstation measures and characterizes the aging condition of the fuel cell stack;
in the invention, the hydrogen and air supply is cut off after all the circulation is finished, and the system enters a shutdown state after the nitrogen purging is finished.
Another object of the present invention is to provide an apparatus for accelerated testing of durability of a fuel cell stack, which is provided with a high-pressure air source, a nitrogen source and a high-pressure hydrogen source which are communicated with the fuel cell stack through pipelines, an electronic load and an electrochemical workstation;
a pipeline between the high-pressure air source and the fuel cell stack is sequentially connected with a first three-way valve, a first pressure reducing valve, a first pressure sensor, a first filter, an air flow controller, a first flow sensor, a first bypass valve, a first humidifier, a first temperature sensor and a first humidity sensor;
a pipeline between the high-pressure hydrogen source and the fuel cell stack is sequentially connected with a second three-way valve, a second pressure reducing valve, a second pressure sensor, a second filter, a multi-nozzle hydrogen ejector, a second flow sensor, a second bypass valve, a second humidifier, a second temperature sensor and a second humidity sensor, and the fuel cell stack is communicated with the second three-way valve through a hydrogen recovery system;
the first three-way valve is connected with the second three-way valve through a pipeline, and the nitrogen source is connected with the first three-way valve and the second three-way valve through a connecting pipeline
The fuel cell stack is connected with the first radiator and the second radiator through pipelines, the output end of the first radiator is connected with the fuel cell stack through the first coolant storage box, the first valve, the heater, the third temperature sensor and the electronic control circulating water pump in sequence, and the output end of the second radiator is connected with the fuel cell stack through the second coolant storage box, the second valve, the first valve, the heater, the third temperature sensor and the electronic control circulating water pump in sequence.
Further, a first bypass pipeline is communicated between the first bypass valve and the first temperature sensor, a second bypass pipeline is communicated between the second bypass valve and the second temperature sensor, and a third bypass pipeline is communicated between the second valve and the heater.
Further, the first radiator and the second radiator are respectively connected with a first electronic fan and a second electronic fan.
Further, the high-pressure air source, the nitrogen source and the high-pressure hydrogen source are respectively connected with a first manual safety valve, a second manual safety valve and a third manual safety valve through pipelines.
And furthermore, a data acquisition and control system is also arranged, the data acquisition and control system is connected with each detector group, the electronic load, the electrochemical workstation and the alarm device through a connecting circuit, and the alarm device is connected with the fuel cell stack.
By combining all the technical schemes, the invention has the advantages and positive effects that:
(1) the existing fuel cell testing system air supply device generally adopts a pressure regulating valve for direct supply, does not adopt an injector, is different from the traditional mechanical opening regulation of the pressure regulating valve, the injector is an element based on the time control principle, can regulate the air inflow of hydrogen according to will by changing the opening timing, duty ratio, frequency, quantity and the like of an electromagnetic valve, and has excellent response characteristics.
(2) A multi-nozzle ejector is selected on the basis of the ejector, when the anode flow demand is low, only one valve is opened and a small duty ratio is given, the flow increasing duty ratio is gradually increased until the anode flow demand is full-opened, and if the anode flow demand is high, the valves are opened in sequence. The air inflow is larger in accelerated aging test compared with the air inflow in a common aging test, the multi-nozzle hydrogen injector solves the problem of dynamic following of the anode gas and the problem of gas supply when the flow change range is large, and dynamic response is quicker and more accurate.
(3) Because the flow rate of the cathode side is much larger than that of the anode side, the ejector is not applicable here, so other methods are adopted on the cathode side, for example, the excess coefficient of the cathode reaction gas is not lower than 2.5, so that the actually supplied gas is much larger than the theoretically consumed gas, the problem of gas response lag is relieved to a certain extent, and the influence of insufficient supply of the reaction gas by a test system on the durability test result of the galvanic pile is avoided. If the influence of the reaction gas supply on the durability of the stack needs to be examined, the cathode excess coefficient can be adjusted.
(4) The cathode side air flow controller adopts a feedforward regulation method, when the current density is changed from low to high, the PID controller is used for carrying out feedforward regulation at the moment, the value of the output flow is advanced by 10s, and the problem of gas shortage caused by delayed cathode gas response is well solved through the feedforward regulation method because the operation condition of the galvanic pile is known.
(5) The flow sensor with high precision and high sensitivity is adopted to monitor the reaction gas flow, and whether the supply of the reaction gas can meet the requirement of the accelerated test of the galvanic pile can be judged.
(6) The invention adds a heating device in the temperature control system, so that the temperature control system has the function of heating the coolant. When the fuel cell stack is just started, a long time is needed (especially in winter) for reaching the working temperature by the self working heat of the fuel cell stack, and the durability test result of the fuel cell stack can be influenced; rapid heating of the coolant may also reduce the effect of the warm-up phase on the durability test results when the fuel cell needs to be raised from a certain operating temperature to a higher temperature as required by the durability test.
(7) The temperature control system adopting the two temperature control subsystems has a rapid cooling function. The temperature also has an influence on the durability of the fuel cell stack, and when the stack is required to work from high temperature to low temperature, the first temperature control subsystem can be closed, the second temperature control subsystem is started, and the rapid cooling function is realized.
(8) The cooling mode of the coolant of the temperature control system adopts air cooling, the coolant is cooled by an electronic fan when passing through a radiator, the radiator and the coolant storage tank are positioned at the same height and the same horizontal plane, and the coolant storage tank can also be cooled when the electronic fan cools the coolant in the radiator.
(9) The electronic fan of the temperature control system and the electric control circulating water pump adopt a synchronous control principle when working, and the effect of rapid cooling is achieved.
(10) When heating of the coolant is required, the third valve 43 controls the coolant to flow directly to the water tank. The heating time is saved without a radiator.
(11) The alarm device can detect voltage fluctuation and hydrogen leakage, and can alarm when detecting that the voltage fluctuation exceeds normal conditions or the hydrogen leakage, and simultaneously the nitrogen gas supply system can sweep when each cycle is finished, and can sweep the fuel cell stack when the alarm device alarms, so that the effect of protecting the fuel cell stack is achieved, and the personal safety is ensured.
Technical effect or experimental effect of comparison.
The existing electric pile testing technology mainly aims at the performance test of steady-state working conditions, when the dynamic working condition variation amplitude is not severe, the response speed of reaction gas supply and electric pile working temperature adjustment basically can meet the requirement of electric pile durability test, but when the electric pile durability is tested in an accelerated mode, because the dynamic working condition variation amplitude and frequency are severe, the response speed of reaction gas supply and electric pile working temperature adjustment is difficult to follow, the phenomena of electric pile gas shortage, over-high temperature or over-low temperature and the like occur, and the durability test result under the accelerated aging working condition is inaccurate. The invention adopts the method that the multi-nozzle hydrogen ejector controls the supply of the anode reaction gas, the air flow controller is combined with the control strategy to design and control the supply of the cathode reaction gas, and the temperature control systems of the two temperature control subsystems are used for adjusting the working temperature, so that the functions of the supply of the reaction gas and the rapid adjustment of the working temperature of the electric pile under the accelerated aging working condition are realized, and the accelerated test system for the durability of the electric pile of the fuel cell can be used for accelerated aging test to obtain an accurate test result.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for accelerated testing of durability of a fuel cell stack according to an embodiment of the present invention;
in the figure: 1. a source of high pressure air; 2. a first three-way valve; 3. a first pressure reducing valve; 4. a first pressure sensor; 5. a first filter; 6. an air flow controller; 7. a first flow sensor; 8. a first bypass valve; 9. a first bypass conduit; 10. a first humidifier; 11. a first temperature sensor; 12. a first humidity sensor; 13. a first back pressure valve; 14. a first manual safety valve; 15. a nitrogen source; 16. a second manual safety valve; 17. a source of high pressure hydrogen; 18. a second three-way valve; 19. a second pressure reducing valve; 20. a second pressure sensor; 21. a second filter; 22. a multi-nozzle hydrogen injector; 23. a second flow sensor; 24. a second bypass valve; 25. a second bypass conduit; 26. a second humidifier; 27. a second temperature sensor; 28. a second humidity sensor; 29. a second back pressure valve; 30. a third manual safety valve; 31. a fuel cell stack; 32. an electronic load; 33. an electrochemical workstation; 34. an alarm device; 35. a data acquisition and control system; 36. an electric control circulating water pump; 37. a third temperature sensor; 38. a heater; 39. a first valve; 40. a first coolant storage tank; 41. a first heat sink; 42. a first electronic fan; 43. a third valve; 44. a third bypass line; 45. a second valve; 46. a second coolant storage tank; 47. a second heat sink; 48. a second electronic fan; 49. a fourth temperature sensor; 50. a hydrogen recovery system.
FIG. 2 is a schematic diagram of a reference operating condition provided by an embodiment of the present invention.
FIG. 3 is a schematic diagram of an accelerated aging condition according to an embodiment of the present invention.
Fig. 4 is a flowchart of a control system according to an embodiment of the present invention.
Fig. 5 is a flow chart of a temperature control system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In view of the problems in the prior art, the present invention provides an accelerated durability testing method and an accelerated durability testing apparatus for a fuel cell stack, and the following describes the present invention in detail with reference to the accompanying drawings.
The invention provides a fuel cell stack durability accelerated test method, which comprises the following steps: controlling the supply of anode reaction gas by adopting a multi-nozzle hydrogen ejector, and controlling the supply of cathode reaction gas by utilizing an air flow controller in combination with a control strategy;
the temperature control system is used for adjusting and controlling the working temperature of the fuel cell stack and the supply temperature of the reaction gas under the accelerated aging working condition in real time;
the durability acceleration test result of the fuel cell stack is accurately obtained through the control process.
Preferably, said controlling the supply of anode reactant gas with the multi-nozzle hydrogen injector comprises;
step 1, performing nitrogen purging, closing a hydrogen air channel by using a first three-way valve and a second three-way valve, and formally operating the fuel cell after the nitrogen purging is finished;
step 2, providing air by a high-pressure air source, passing the air through a first three-way valve, a first pressure reducing valve, a first filter, an air flow controller and a first humidifier to the inside of the fuel cell stack, and finally discharging tail gas through a first back pressure valve;
and 3, providing hydrogen by a high-pressure hydrogen source, enabling the hydrogen to pass through a second three-way valve, a second pressure reducing valve, a second filter and a multi-nozzle hydrogen ejector, enabling a second humidifier to reach the inside of the fuel cell stack, and recovering tail gas generated at the anode of the fuel cell stack through a hydrogen recovery system to finally enter a hydrogen branch.
The controlling cathode reactant gas supply with an air flow controller in combination with a control strategy comprises:
firstly, setting the initial cathode reaction gas supply quantity to be far greater than the actual demand quantity when the fuel cell is in formal operation, and controlling the air flow controller to provide air according to the set initial cathode reaction gas supply quantity;
and secondly, monitoring and analyzing the working condition change of the electronic load by the data acquisition module and the control module, and sending a control signal to the multi-nozzle hydrogen ejector and the air flow controller to enable the gas supply amount to meet the requirement of the required actual gas supply amount.
Determining the required theoretical air supply quantity according to the current density required by the electronic load, and multiplying the theoretical air supply quantity by an excess coefficient to obtain the required actual air supply quantity;
the air flow controller adopts an excess coefficient not less than 2.5 on the cathode side, and when the current density of the working condition is changed from low to high, a feed-forward adjusting method is adopted, and the gas flow is changed in advance by 10 s.
The real-time adjustment and control of the working temperature of the fuel cell stack and the supply temperature of the reaction gas under the accelerated aging working condition by using the temperature control system comprises the following steps:
(1) the coolant is driven by an electronic control circulating pump to enter a coolant channel inside the fuel cell stack, the coolant is provided by a first coolant storage tank, and a second valve is closed at the moment;
(2) when the coolant needs to be heated to enable the temperature of the electric pile to quickly reach the working requirement, the heater heats the coolant and then conveys the coolant to a coolant flow passage of the fuel cell, at the moment, a third valve is closed, the coolant directly enters the electric pile through a third bypass pipeline without passing through a radiator, and an electronic fan is closed;
(3) when the coolant does not need to be heated, the heater does not work, the third valve is opened at the moment, the coolant passes through the radiator, and the electronic fan is opened;
(4) when the galvanic pile is cooled, the first valve and the first electronic fan are closed, the second valve and the second electronic fan are opened, and at the moment, the temperature of the coolant of the second temperature control subsystem is the same as the room temperature, so that the galvanic pile is cooled.
The method specifically comprises the following steps:
performing nitrogen purging, wherein a first three-way valve and a second three-way valve close a hydrogen air channel, and the fuel cell is formally operated after the nitrogen purging is finished;
step two, air is provided by a high-pressure air source, flows into the fuel cell stack through a first three-way valve, a first pressure reducing valve, a first filter, an air flow controller and a first humidifier, and finally exhausts tail gas through a first back pressure valve;
step three, hydrogen is provided by a high-pressure hydrogen source, the hydrogen passes through a second three-way valve, a second pressure reducing valve, a second filter and a multi-nozzle hydrogen ejector, a second humidifier is arranged inside the fuel cell stack, and tail gas generated at the anode of the fuel cell stack is recovered by a hydrogen recovery system and finally enters a hydrogen branch;
step four, when the circulation is finished, selecting whether nitrogen purging is performed, if the nitrogen purging is selected, providing nitrogen by a nitrogen source, entering the anode and the cathode through a first three-way valve and a second three-way valve, closing the hydrogen and an air inlet by the three-way valve at the moment, opening a nitrogen inlet, opening a bypass valve after passing through an air flow controller, entering the fuel cell stack through a bypass pipeline, discharging cathode nitrogen tail gas through a first back pressure valve, discharging anode nitrogen tail gas through a second back pressure valve, and closing a hydrogen recovery system;
monitoring and analyzing the working condition change of the electronic load by the data acquisition module and the control module, and sending a control signal to the multi-nozzle hydrogen ejector and the air flow controller to enable the gas supply amount to meet the requirement of the required actual gas supply amount;
step six, when the fuel cell stack has hydrogen leakage or abnormal voltage fluctuation, the system judges that the fuel cell stack has a dangerous condition, the alarm device gives an alarm, the system cuts off the supply of hydrogen and air at the same time, and a nitrogen channel is opened to purge the fuel cell stack so as to protect the fuel cell stack;
measuring and representing the aging condition of the fuel cell stack by the electrochemical workstation;
and step eight, cutting off the supply of hydrogen and air after all the circulation is finished, and enabling the system to enter a shutdown state after the nitrogen purging is finished.
The technical solution of the present invention is further described with reference to the accompanying drawings and embodiments.
Examples
As shown in fig. 1, the accelerated durability testing apparatus for a fuel cell stack according to the embodiment of the present invention is provided with a high-pressure air source 1, a nitrogen gas source 15, and a high-pressure hydrogen gas source 17, which are in communication with a fuel cell stack 31 through pipes, an electronic load 32, and an electrochemical workstation 33;
a pipeline between a high-pressure air source 1 and a fuel cell stack 31 is sequentially connected with a first three-way valve 2, a first pressure reducing valve 3, a first pressure sensor 4, a first filter 5, an air flow controller 6, a first flow sensor 7, a first bypass valve 8, a first humidifier 10, a first temperature sensor 11 and a first humidity sensor 12;
a second three-way valve 18, a second pressure reducing valve 19, a second pressure sensor 20, a second filter 21, a multi-nozzle hydrogen injector 22, a second flow sensor 23, a second bypass valve 24, a second humidifier 26, a second temperature sensor 27 and a second humidity sensor 28 are sequentially connected to a pipeline between the high-pressure hydrogen source 17 and the fuel cell stack 31, and the fuel cell stack is communicated with the second three-way valve through a hydrogen recovery system;
the first three-way valve 2 is connected with the second three-way valve 28 through a pipeline, and the nitrogen source 15 is connected with the first three-way valve 2 and the second three-way valve 28 through a connecting pipeline
The fuel cell stack 31 is connected to a first radiator 41 and a second radiator 47 through a pipeline, the output end of the first radiator 41 is connected to the fuel cell stack 31 sequentially through a first coolant storage tank 40, a first valve 39, a heater 38, a third temperature sensor 37, and an electronically controlled circulating water pump 36, and the output end of the second radiator 47 is connected to the fuel cell stack 31 sequentially through a second coolant storage tank 46, a second valve 45, a first valve 49, a heater 38, a third temperature sensor 37, and an electronically controlled circulating water pump 36.
A first bypass duct 9 is communicated between the first bypass valve 8 and the first temperature sensor 11, a second bypass duct 25 is communicated between the second bypass valve 24 and the second temperature sensor 27, and a third bypass duct is communicated between the second valve and the heater.
The first and second electronic fans 42 and 48 are connected to the first and second heat sinks 41 and 47, respectively.
The high-pressure air source 1, the nitrogen source 15 and the high-pressure hydrogen source 17 are respectively connected with a first manual safety valve, a second manual safety valve and a third manual safety valve through pipelines.
The data acquisition and control system 35 is connected with each detector group, the electronic load, the electrochemical workstation and the alarm device through a connecting circuit, and the alarm device 34 is connected with the fuel cell stack.
The first detector group includes a first pressure reducing valve 3, a first pressure sensor 4, an air flow controller, a first flow sensor 7, a first humidifier 10, a first temperature sensor 11, and a first humidity sensor 12.
The second detector group includes a second pressure reducing valve 19, a second pressure sensor 20, a multi-nozzle hydrogen injector 22, a second flow sensor 23, a second humidifier 26, a second temperature sensor 27, and a second humidity sensor 28.
The third detector group includes a third temperature sensor 37 and a fourth temperature sensor 49. The fourth detector group is an alarm device. The temperature control system comprises an electronic control circulating water pump 36, a heater 38, a third temperature sensor 37, a first valve 39, a first coolant storage tank 40, a first radiator 41, a first electronic fan 42, a second valve 45, a second coolant storage tank 46, a second radiator 47, a second electronic fan 48, a third valve 43, a third bypass pipeline 44 and a fourth temperature sensor 49.
The first radiator 41, the first electronic fan 42, the first coolant reservoir tank 40, the third valve 43, and the third bypass conduit 44 are a first temperature control subsystem; the second radiator 47, second electronic fan 48, second coolant reservoir 46 are a second temperature control subsystem.
The durability test of the fuel cell stack consumes time and labor and has high test cost, and if the existing test is to be relatively fit with the actual situation, the circulation working condition adopted by the electronic load is generally obtained by refining according to the actual operation data of the fuel cell automobile (hereinafter referred to as a reference circulation working condition). In order to reduce the duration of the durability test, accelerate the decay rate of the fuel cell and reduce the test cost, an accelerated aging test condition can be adopted during the test. The accelerated aging test working condition can be designed according to an aging mechanism and is calculated and analyzed through an aging simulator, and the accelerated aging test working condition corresponding to the accelerated multiple is finally obtained, so that the time is saved, and the same aging effect can be achieved.
When the fuel cell operates, nitrogen purging is firstly carried out, at the moment, the first three-way valve 2 and the second three-way valve 18 close the hydrogen air channel, and the fuel cell operates formally after the nitrogen purging is finished. Air is provided by a high-pressure air source, firstly passes through a first three-way valve 2, a first pressure reducing valve 3, a first filter 5, an air flow controller and a first humidifier 10 to the interior of the fuel cell stack, and finally tail gas is discharged through a first back pressure valve 13. Meanwhile, hydrogen is provided by a high-pressure hydrogen source, the hydrogen passes through a second three-way valve 18, a second pressure reducing valve 19, a second filter 21, a multi-nozzle hydrogen injector 22 and a second humidifier 26 to the inside of the fuel cell stack 31, and tail gas generated at the anode of the fuel cell stack 31 is recovered by a hydrogen recovery system and finally enters a hydrogen branch. At the end of a cycle, whether nitrogen purging is performed or not can be selected, if nitrogen purging is selected, nitrogen is provided by a nitrogen source and enters the anode and the cathode through the first three-way valve 2 and the second three-way valve 18, at the moment, the three-way valve closes hydrogen and an air inlet to open a nitrogen inlet, after passing through the air flow controller, the bypass valve is opened and enters the fuel cell stack through a bypass pipeline, the cathode nitrogen tail gas is discharged through the first back pressure valve 13, the anode nitrogen tail gas is discharged through the second back pressure valve 29, and at the moment, the hydrogen recovery system is closed. The high-pressure air source, the nitrogen source and the high-pressure hydrogen source are all provided with manual safety valves.
When the fuel cell stack operates, because the change frequency of the accelerated aging test working condition is high, the change amplitude is large, and the dynamic regulation and control with better following performance on the gas supply system and the temperature control system are needed. In the aspect of the gas supply system: the data acquisition and control system monitors and analyzes the working condition change of the electronic load, the current density required by the electronic load can determine the theoretical air supply quantity required at the moment, the theoretical air supply quantity is multiplied by an excess coefficient to obtain the required actual air supply quantity, and the control signal is sent to the multi-nozzle hydrogen ejector and the air flow controller at the moment to ensure that the air supply quantity meets the requirement; the current density required by the electronic load varies, and the gas supply amount also varies. The multi-nozzle hydrogen injector on the anode side can achieve a good dynamic response effect, and the following improvements are made on the cathode side in order to avoid the occurrence of an air shortage condition caused by rapid change of working conditions: 1) in the existing experiment, the cathode side generally adopts an excess coefficient of 1.5-2.5, and in order to relieve the situation of gas shortage, an excess coefficient not lower than 2.5 is adopted; 2) when the current density of the working condition is changed from low to high, the gas flow is changed by 10s in advance by adopting a feed-forward adjusting method. In terms of a temperature control system: coolant is driven by an electronically controlled circulation pump into the coolant passages inside the fuel cell stack and is supplied from the first coolant storage tank 40, with the second valve 45 closed. When the coolant needs to be heated to enable the temperature of the stack to quickly reach the working requirement, the heater heats the coolant and then conveys the coolant to the fuel cell coolant flow passage, at the moment, the third valve 43 is closed, the coolant directly enters the stack through the third bypass pipe 44 without passing through the radiator, and the electronic fan is closed. When it is not necessary to heat the coolant, the heater does not operate, and at this time, the third valve 43 is opened, the coolant passes through the radiator, and the electronic fan is opened. The temperature measured by the fourth temperature sensor 49 defaults to the stack operating temperature and the temperature measured by the third temperature sensor 37 is the coolant entering fuel cell stack 31 temperature. The accelerated aging test also needs to consider the influence of temperature on the durability of the stack, when the stack needs to be cooled, the first valve 39 and the first electronic fan 42 are closed, the second valve 45 and the second electronic fan 48 are opened, and at this time, the temperature of the coolant of the second temperature control subsystem is approximately the same as the room temperature, so that the effect of rapid cooling can be achieved.
When the fuel cell stack has hydrogen leakage or abnormal voltage fluctuation, the system judges that the fuel cell stack has dangerous conditions, the alarm device gives an alarm, the system cuts off the supply of hydrogen and air, and the nitrogen channel is opened to purge the fuel cell stack so as to protect the fuel cell stack.
The electrochemical workstation can be used to measure and characterize the aging of the fuel cell stack.
And after all circulation is finished, the supply of hydrogen and air is cut off, and the system enters a shutdown state after the nitrogen purging is finished. The flow chart of the whole control system is shown in FIG. 4, and the flow chart of the temperature control system is shown in FIG. 5.
In the embodiment of the invention, the gas supply of the test system changes along with the electronic load, in order to relieve the problem of the dynamic response lag of the supplied gas, a multi-nozzle hydrogen injector is used for supplying hydrogen, and meanwhile, because the flow rate of the cathode gas is relatively large and is not suitable for the injector, the gas is supplied by adopting an excess coefficient not less than 2.5 and a feedforward regulation method; the temperature control system not only can realize the heating function, but also can realize the rapid cooling function.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. An accelerated durability test method for a fuel cell stack, the accelerated durability test method comprising:
controlling the supply of anode reaction gas by adopting a multi-nozzle hydrogen ejector, and controlling the supply of cathode reaction gas by utilizing an air flow controller in combination with a control strategy;
the temperature control system is used for adjusting and controlling the working temperature of the fuel cell stack and the supply temperature of the reaction gas under the accelerated aging working condition in real time;
the durability acceleration test result of the fuel cell stack is accurately obtained through the control process.
2. The fuel cell stack durability acceleration test method according to claim 1, characterized in that the controlling of the anode reaction gas supply with the multi-nozzle hydrogen injector includes;
step 1, performing nitrogen purging, closing a hydrogen air channel by using a first three-way valve and a second three-way valve, and formally operating the fuel cell after the nitrogen purging is finished;
step 2, providing air by a high-pressure air source, passing the air through a first three-way valve, a first pressure reducing valve, a first filter, an air flow controller and a first humidifier to the inside of the fuel cell stack, and finally discharging tail gas through a first back pressure valve;
and 3, providing hydrogen by a high-pressure hydrogen source, enabling the hydrogen to pass through a second three-way valve, a second pressure reducing valve, a second filter and a multi-nozzle hydrogen ejector, enabling a second humidifier to reach the inside of the fuel cell stack, and recovering tail gas generated at the anode of the fuel cell stack through a hydrogen recovery system to finally enter a hydrogen branch.
3. The fuel cell stack durability acceleration test method according to claim 1, characterized in that the controlling of the cathode reaction gas supply method using the air flow controller in combination with the control strategy includes:
firstly, setting the initial cathode reaction gas supply quantity to be far greater than the actual demand quantity when the fuel cell is in formal operation, and controlling the air flow controller to provide air according to the set initial cathode reaction gas supply quantity;
and secondly, monitoring and analyzing the working condition change of the electronic load by the data acquisition module and the control module, and sending a control signal to the multi-nozzle hydrogen ejector and the air flow controller to enable the gas supply amount to meet the requirement of the required actual gas supply amount.
4. The fuel cell stack durability acceleration test method according to claim 3,
determining the required theoretical air supply quantity according to the current density required by the electronic load, and multiplying the theoretical air supply quantity by an excess coefficient to obtain the required actual air supply quantity;
the air flow controller adopts an excess coefficient not less than 2.5 on the cathode side, and when the current density of the working condition is changed from low to high, a feed-forward adjusting method is adopted, and the gas flow is changed in advance by 10 s.
5. The method for accelerated testing of fuel cell stack durability according to claim 1, wherein the real-time adjustment and control of the operating temperature of the fuel cell stack and the reactant gas supply temperature under the accelerated aging condition by the temperature control system comprises:
(1) the coolant is driven by an electronic control circulating pump to enter a coolant channel inside the fuel cell stack, the coolant is provided by a first coolant storage tank, and a second valve is closed at the moment;
(2) when the coolant needs to be heated to enable the temperature of the electric pile to quickly reach the working requirement, the heater heats the coolant and then conveys the coolant to a coolant flow passage of the fuel cell, at the moment, a third valve is closed, the coolant directly enters the electric pile through a third bypass pipeline without passing through a radiator, and an electronic fan is closed;
(3) when the coolant does not need to be heated, the heater does not work, the third valve is opened at the moment, the coolant passes through the radiator, and the electronic fan is opened;
(4) when the galvanic pile is cooled, the first valve and the first electronic fan are closed, the second valve and the second electronic fan are opened, and at the moment, the temperature of the coolant of the second temperature control subsystem is the same as the room temperature, so that the galvanic pile is cooled.
6. The accelerated durability test device for the fuel cell stack is characterized by being provided with a high-pressure air source, a nitrogen source and a high-pressure hydrogen source which are communicated with the fuel cell stack through pipelines, an electronic load and an electrochemical workstation;
a pipeline between the high-pressure air source and the fuel cell stack is sequentially connected with a first three-way valve, a first pressure reducing valve, a first pressure sensor, a first filter, an air flow controller, a first flow sensor, a first bypass valve, a first humidifier, a first temperature sensor and a first humidity sensor;
a pipeline between the high-pressure hydrogen source and the fuel cell stack is sequentially connected with a second three-way valve, a second pressure reducing valve, a second pressure sensor, a second filter, a multi-nozzle hydrogen ejector, a second flow sensor, a second bypass valve, a second humidifier, a second temperature sensor and a second humidity sensor, and the fuel cell stack is communicated with the second three-way valve through a hydrogen recovery system;
the first three-way valve is connected with the second three-way valve through a pipeline, and the nitrogen source is connected with the first three-way valve and the second three-way valve through a connecting pipeline;
the fuel cell stack is connected with the first radiator and the second radiator through pipelines, the output end of the first radiator is connected with the fuel cell stack through the first coolant storage box, the first valve, the heater, the third temperature sensor and the electronic control circulating water pump in sequence, and the output end of the second radiator is connected with the fuel cell stack through the second coolant storage box, the second valve, the first valve, the heater, the third temperature sensor and the electronic control circulating water pump in sequence.
7. The accelerated durability test apparatus for a fuel cell stack according to claim 6, wherein a first bypass line is connected between the first bypass valve and the first temperature sensor, a second bypass line is connected between the second bypass valve and the second temperature sensor, and a third bypass line is connected between the second valve and the heater.
8. The accelerated durability test apparatus of a fuel cell stack according to claim 6, wherein a first electronic fan and a second electronic fan are connected to the first heat sink and the second heat sink, respectively.
9. The accelerated durability test apparatus of a fuel cell stack according to claim 6, wherein the high-pressure air source, the nitrogen source, and the high-pressure hydrogen source are connected to a first manual safety valve, a second manual safety valve, and a third manual safety valve, respectively, through pipes.
10. The accelerated durability test device of a fuel cell stack according to claim 6, further comprising a data acquisition and control system, wherein the data acquisition and control system is connected with each detector set, the electronic load, the electrochemical workstation and the alarm device through connecting lines, and the alarm device is connected with the fuel cell stack.
CN202110014477.5A 2021-01-06 2021-01-06 Fuel cell stack durability accelerated test method and durability accelerated test device Pending CN112701326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110014477.5A CN112701326A (en) 2021-01-06 2021-01-06 Fuel cell stack durability accelerated test method and durability accelerated test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110014477.5A CN112701326A (en) 2021-01-06 2021-01-06 Fuel cell stack durability accelerated test method and durability accelerated test device

Publications (1)

Publication Number Publication Date
CN112701326A true CN112701326A (en) 2021-04-23

Family

ID=75514965

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110014477.5A Pending CN112701326A (en) 2021-01-06 2021-01-06 Fuel cell stack durability accelerated test method and durability accelerated test device

Country Status (1)

Country Link
CN (1) CN112701326A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113687666A (en) * 2021-08-19 2021-11-23 上海智能新能源汽车科创功能平台有限公司 Gas supply method, system and device of fuel cell testing system
CN113970412A (en) * 2021-10-21 2022-01-25 上海捷氢科技有限公司 Open-circuit state detection device and method for fuel cell
CN114152881A (en) * 2021-10-21 2022-03-08 北京天玛智控科技股份有限公司 Hydrogen fuel cell testing system
CN114865008A (en) * 2022-06-09 2022-08-05 一汽解放汽车有限公司 Reliability testing device and method for fuel cell hydrogen injector
CN114914494A (en) * 2022-06-27 2022-08-16 北京亿华通科技股份有限公司 Durability control method and device for fuel cell stack
CN115000468A (en) * 2022-06-10 2022-09-02 潍柴动力股份有限公司 Method for testing durability of fuel cell stack under accelerated start-stop working condition
CN115000459A (en) * 2022-06-09 2022-09-02 一汽解放汽车有限公司 Reliability testing device and testing method for fuel cell hydrogen injector
CN115184815A (en) * 2022-06-22 2022-10-14 中汽创智科技有限公司 Fuel cell monocell test system
CN116558999A (en) * 2023-07-07 2023-08-08 韵量燃料电池(广东)有限公司 Method and system for testing cross pressure cycle life of fuel cell stack

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113687666A (en) * 2021-08-19 2021-11-23 上海智能新能源汽车科创功能平台有限公司 Gas supply method, system and device of fuel cell testing system
CN113687666B (en) * 2021-08-19 2023-11-03 上海智能新能源汽车科创功能平台有限公司 Gas supply method, system and device of fuel cell test system
CN113970412A (en) * 2021-10-21 2022-01-25 上海捷氢科技有限公司 Open-circuit state detection device and method for fuel cell
CN114152881A (en) * 2021-10-21 2022-03-08 北京天玛智控科技股份有限公司 Hydrogen fuel cell testing system
CN114865008A (en) * 2022-06-09 2022-08-05 一汽解放汽车有限公司 Reliability testing device and method for fuel cell hydrogen injector
CN115000459A (en) * 2022-06-09 2022-09-02 一汽解放汽车有限公司 Reliability testing device and testing method for fuel cell hydrogen injector
CN115000468A (en) * 2022-06-10 2022-09-02 潍柴动力股份有限公司 Method for testing durability of fuel cell stack under accelerated start-stop working condition
CN115184815A (en) * 2022-06-22 2022-10-14 中汽创智科技有限公司 Fuel cell monocell test system
CN114914494A (en) * 2022-06-27 2022-08-16 北京亿华通科技股份有限公司 Durability control method and device for fuel cell stack
CN114914494B (en) * 2022-06-27 2023-11-10 北京亿华通科技股份有限公司 Durability control method and device for fuel cell stack
CN116558999A (en) * 2023-07-07 2023-08-08 韵量燃料电池(广东)有限公司 Method and system for testing cross pressure cycle life of fuel cell stack
CN116558999B (en) * 2023-07-07 2023-09-26 韵量燃料电池(广东)有限公司 Method and system for testing cross pressure cycle life of fuel cell stack

Similar Documents

Publication Publication Date Title
CN112701326A (en) Fuel cell stack durability accelerated test method and durability accelerated test device
CN110764011B (en) Fuel cell testing platform
CN110190306B (en) Online fault diagnosis method for fuel cell system
CN109346745B (en) Method and system for judging internal water state of fuel cell based on impedance
CN214313266U (en) Fuel cell stack durability acceleration testing device
CN111755720A (en) Purging and dewatering low-temperature storage control method for fuel cell engine
CN111640965A (en) High-low temperature starting test system and test method for fuel cell
CN202948632U (en) Proton exchange membrane fuel cell engine system testing platform for automobile
CN109713334A (en) Fuel cell pile testboard and its application method
CN113067018A (en) Fuel cell hydrogen circulation test system
CN213583883U (en) Thermal management test system for vehicle hydrogen fuel cell
CN215731802U (en) Fuel cell test system
CN113782778B (en) Electric pile water management regulation and control method and device based on fixed frequency impedance and gas pressure drop
CN109728331B (en) Proton exchange membrane fuel cell dynamic performance test system and working method thereof
CN209675411U (en) Fuel cell pile testboard
CN111082108B (en) Device and method for testing start-stop accelerated life of fuel cell
CN112290060A (en) Thermal management test system for vehicle hydrogen fuel cell
CN113161579A (en) Multifunctional proton exchange membrane fuel cell component in-loop test bench
CN111811825A (en) Multifunctional engine cooling temperature control system and control method thereof
CN113250947B (en) Fuel cell air compressor durability test system and method
CN214471694U (en) Ejector performance testing device
CN114744256B (en) Hydrogen fuel cell thermal radiation and wind environment adaptability test system and method
CN113675433B (en) Multi-mode fuel cell test bench thermal management system and control method thereof
CN115377461A (en) Anode pulse tail row simulation system for fuel cell stack test
CN115706247A (en) Fuel cell test system and control method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination