Method, device, equipment, and storage medium for testing fuel cell life

Abstract

Embodiments of the present application disclose a method, device, equipment, and storage medium for testing the lifespan of a fuel cell. The fuel cell is disposed in a fuel cell engine; the method includes: performing multiple start-stop operations on the fuel cell engine; wherein, during the shutdown process of the start-stop operation, hydrogen in the fuel cell is consumed; then, air in the cathode of the fuel cell is controlled to enter the anode of the fuel cell, so as to create a hydrogen-air interface at the anode of the fuel cell during the startup process of the next start-stop operation; when the number of start-stop operations is greater than or equal to a preset first cycle number, the performance of the fuel cell is detected; and a test result of the lifespan of the fuel cell is obtained according to the detection result. The present application can artificially create a hydrogen-air interface at the anode of the fuel cell during the start-stop operation. Compared with naturally placing the fuel cell in the air for a long time after shutdown and then starting the fuel cell, the rate of detecting the lifespan of the fuel cell is accelerated.

Description

Technical Field

[0001] The present application relates to the technical field of fuel cells, and particularly relates to a method, device, equipment, and storage medium for testing the life of a fuel cell. Background Art

[0002] Currently, due to the advantages of high power generation efficiency and low environmental pollution of fuel cells, more and more hybrid power system vehicles choose to install fuel cells as the battery energy source in the vehicle. The fuel cell generates electricity through the reaction between hydrogen and oxygen in the air. At the same time, the reaction between hydrogen and oxygen in the air also generates liquid water in the fuel cell. As long as there is a sufficient hydrogen source and oxygen source, this conversion process can continue indefinitely, achieving zero pollution emissions. However, the operating life, long-term performance, and maintenance cost of fuel cells have become the main factors restricting their further commercial development. Among them, the test of the fuel cell life is beneficial to predicting the life of the fuel cell, so as to ensure the timely maintenance of the hydrogen fuel cell and extend its service life, and further promote the development of the industrial chain of hydrogen energy batteries.

[0003] In the related art, when detecting the life of a fuel cell, after shutdown, the fuel cell needs to be naturally placed in the air for a long time before starting, resulting in a low detection rate and long time consumption. Summary of the Invention

[0004] To solve the above technical problems, embodiments of the present application provide a method, device, equipment, and storage medium for testing the life of a fuel cell to improve the detection rate of the fuel cell life.

[0005] According to one aspect of the embodiments of the present application, a method for testing the life of a fuel cell is provided. The fuel cell is disposed in a fuel cell engine; the method includes: performing multiple start-stop operations on the fuel cell engine; wherein, during the shutdown process of the start-stop operation, consuming the hydrogen in the fuel cell; then controlling the air in the cathode of the fuel cell to enter the anode of the fuel cell to create a hydrogen-air interface at the anode of the fuel cell during the startup process of the next start-stop operation; when the number of start-stop operations is greater than or equal to a preset first cycle number, detecting the performance of the fuel cell; and obtaining a test result of the fuel cell life according to the detection result.

[0006] According to one aspect of the embodiments of the present application, a device for testing the life of a fuel cell is provided. The fuel cell is disposed in a fuel cell engine. The device includes: a start-stop operation module configured to perform multiple start-stop operations on the fuel cell engine. Wherein, during the shutdown process of the start-stop operation, hydrogen in the fuel cell is consumed. Then, air at the cathode of the fuel cell is controlled to enter the anode of the fuel cell, so as to create a hydrogen-air interface at the anode of the fuel cell during the startup process of the next start-stop operation. A detection module configured to detect the performance of the fuel cell when the number of start-stop operations is greater than or equal to a preset first cycle number. An acquisition module configured to obtain a test result of the life of the fuel cell according to the detection result.

[0007] According to one aspect of the embodiments of the present application, an electronic device is provided, including: one or more processors; a storage device for storing one or more programs, which, when executed by the one or more processors, cause the electronic device to implement the method for testing the life of a fuel cell as described above.

[0008] According to one aspect of the embodiments of the present application, a computer-readable storage medium is provided, on which computer-readable instructions are stored. When the computer-readable instructions are executed by a processor of a computer, the computer is caused to execute the method for testing the life of a fuel cell as described above.

[0009] In the technical solution provided by the embodiments of the present application, by performing multiple start-stop operations on the fuel cell engine where the fuel cell is located, and consuming hydrogen in the fuel cell during the shutdown process of the start-stop operation. Then, air at the cathode of the fuel cell is controlled to enter the anode of the fuel cell, so as to create a hydrogen-air interface at the anode of the fuel cell during the startup process of the next start-stop operation. When the number of start-stop operations is greater than or equal to a preset first cycle number, the performance of the fuel cell is detected. The test result of the life of the fuel cell is obtained according to the detection result. In this way, hydrogen in the fuel cell is quickly consumed during the shutdown process of multiple start-stop operations on the fuel cell. Then, after the fuel cell stops, air at the cathode of the fuel cell is controlled to enter the anode of the fuel cell, so as to artificially create a hydrogen-air interface at the anode of the fuel cell during the startup process of the next start-stop operation. Compared with the situation where the fuel cell needs to be naturally placed in the air for a long time after shutdown and then the fuel cell is started, the time consumed for detecting the life of the fuel cell is reduced, and the rate of detecting the life of the fuel cell is accelerated.

[0010] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. Description of the Drawings

[0011] The accompanying drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts. In the accompanying drawings:

[0012] Figure 1 is a schematic diagram of an implementation environment shown in an exemplary embodiment of the present application;

[0013] Figure 2 is a schematic structural diagram of a fuel cell engine test bench system shown in an exemplary embodiment of the present application;

[0014] Figure 3 is a schematic circuit diagram of a fuel cell engine test bench system shown in an exemplary embodiment of the present application;

[0015] Figure 4 is a flowchart of a method for testing the life of a fuel cell shown in an exemplary embodiment of the present application;

[0016] Figure 5 is Figure 4 a flowchart of step S410 in the shown embodiment in an exemplary embodiment;

[0017] Figure 6 is Figure 5 a flowchart of step S530 in the shown embodiment in an exemplary embodiment;

[0018] Figure 7 is Figure 5 a flowchart of step S540 in the shown embodiment in an exemplary embodiment;

[0019] Figure 8 is Figure 7 a flowchart of step S710 in the shown embodiment in an exemplary embodiment;

[0020] Figure 9 is a fuel cell performance degradation curve shown in an exemplary embodiment of the present application;

[0021] Figure 10 is a block diagram of a device for testing the life of a fuel cell shown in an exemplary embodiment of the present application;

[0022] Figure 11 shows a schematic structural diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application.

[0023] Explanation of reference numerals:

[0024] 100: Electronic device; 200: Fuel cell engine; 201: Air filter; 202: Air compressor; 203: Intercooler; 204: Humidifier; 205: Inlet valve to stack; 206: Outlet valve to stack; 207: Air inlet pressure sensor to stack; 208: High-pressure gas cylinder; 209: Pressure reducing valve; 210: Hydrogen injection valve; 211: Hydrogen inlet pressure sensor to stack; 212: Steam-water separator; 213: Exhaust and drain valve; 214: Hydrogen circulation pump; 215: Coolant outlet temperature sensor; 216: Water pump; 217: Three-way valve; 218: Heater; 219: Radiator; 220: Fuel cell; 301: Control unit. Detailed implementation mode

[0025] Here, an exemplary embodiment will be described in detail, and its examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0026] The block diagrams shown in the drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0027] The flowcharts shown in the drawings are only exemplary descriptions and do not necessarily include all contents and operations / steps, nor do they necessarily need to be executed in the described order. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined. Therefore, the actual execution order may change according to the actual situation.

[0028] In the present application, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0029] First, please refer to Figure 1 , Figure 1 which is a schematic diagram of an implementation environment related to the present application. This implementation environment includes an electronic device 100 and a fuel cell engine 200, and the electronic device 100 communicates with the fuel cell engine 200 through a wired or wireless network.

[0030] Please refer toFigure 2 and Figure 3 , Figure 2 is a schematic structural diagram of a fuel cell engine involved in the present application. Figure 3 is a schematic circuit diagram of a fuel cell engine involved in the present application.

[0031] The fuel cell engine 200 includes: a fuel cell 220, an air supply subsystem, a hydrogen circulation subsystem, a cooling subsystem, and a control subsystem. Among them, the air supply subsystem includes: an air filter 201, an air compressor 202, an intercooler 203, a humidifier 204, an inlet stack shut-off valve 205, an outlet stack shut-off valve 206, and an air inlet stack pressure sensor 207; the hydrogen circulation subsystem includes: a high-pressure gas cylinder 208, a pressure reducing valve 209, a hydrogen injection valve 210, a hydrogen inlet stack pressure sensor 211, a steam-water separator 212, an exhaust and drain valve 213, and a hydrogen circulation pump 214; the cooling subsystem includes: a coolant outlet stack temperature sensor 215, a water pump 216, a three-way valve 217, a heater (Positive Temperature Coefficient, PTC) 218, a radiator 219; the control subsystem includes: a control unit 301, an air compressor 202, an inlet stack shut-off valve 205, an outlet stack shut-off valve 206, an air inlet stack pressure sensor 207, a pressure reducing valve 209, a hydrogen injection valve 210, a hydrogen inlet stack pressure sensor 211, an exhaust and drain valve 213, a hydrogen circulation pump 214, a coolant outlet stack temperature sensor 215, a water pump 216, a three-way valve 217, and a heater 218.

[0032] The air filter 201, the air compressor 202, and the intercooler 203 are connected in sequence, and the other end of the intercooler 203 is connected to the first air inlet of the humidifier 204; the first air outlet of the humidifier 204 is connected to the atmosphere; the second air inlet of the humidifier 204 is connected to the air outlet of the fuel cell 220 through the outlet stack shut-off valve 206; the second air outlet of the humidifier 204 is connected to the air inlet of the fuel cell 220 through the inlet stack shut-off valve 205; an air inlet stack pressure sensor 207 is provided at the air inlet of the fuel cell 220.

[0033] The hydrogen outlet of the fuel cell 220 is connected to the inlet of the steam-water separator 212; the first outlet of the steam-water separator 212 is connected to the atmosphere through the exhaust and drain valve 213; the second outlet of the steam-water separator 212 is connected to one end of the hydrogen circulation pump 214; the other end of the hydrogen circulation pump 214 and the hydrogen inlet of the fuel cell 220 are respectively connected to one end of the hydrogen injection valve 210; a hydrogen inlet stack pressure sensor 211 is provided at the hydrogen inlet of the fuel cell 220; the other end of the hydrogen injection valve 210 is connected to one end of the pressure reducing valve 209; the other end of the pressure reducing valve 209 is connected to the high-pressure gas cylinder 208.

[0034] A coolant outlet temperature sensor 215 is provided at the liquid outlet of the fuel cell 220; the liquid outlet of the fuel cell 220 is connected to the inlet of the water pump 216; the outlet of the water pump 216 is respectively connected to one end of the radiator 219 and the first port of the three-way valve 217; the other end of the radiator 219 is connected to the second port of the three-way valve 217; the third port of the three-way valve 217 is connected to one end of the heater 218; the other end of the heater 218 is connected to the liquid inlet of the fuel cell 220.

[0035] The air supply subsystem is used to supply air to the cathode of the fuel cell 220. Among them, the air filter 201 is used to filter the air; the air compressor 202 is used to compress the filtered air and send the compressed air into the intercooler 203 so as to input the air into the cathode of the fuel cell; the intercooler 203 is used to cool the air and send the cooled air into the humidifier 204; the humidifier 204 is used to humidify the air and discharge the exhausted gas after the reaction; the inlet stack shut-off valve 205 is used to control the rate of the air input into the air inlet of the fuel cell 220, that is, to control the rate of the air input into the cathode; the outlet stack shut-off valve 206 is used to control the rate of the first exhausted gas discharged from the air outlet of the fuel cell 220 after the reaction; the air inlet stack pressure sensor 207 is used to detect the pressure of the air input into the fuel cell.

[0036] The hydrogen circulation subsystem is used to realize hydrogen circulation to supply hydrogen to the anode of the fuel cell. Among them, a high-pressure gas cylinder 208 stores high-pressure dry hydrogen; the pressure reducing valve 209 is used to reduce the pressure of the hydrogen output from the high-pressure gas cylinder 208; the hydrogen injection valve 210 is used to inject the hydrogen with reduced pressure into the hydrogen inlet of the fuel cell 220 to input the hydrogen into the anode; the hydrogen inlet stack pressure sensor 211 is used to detect the pressure of the hydrogen inlet of the fuel cell 220, that is, to detect the pressure of the hydrogen input into the fuel cell; the steam-water separator 212 is used to separate the unreacted hydrogen, nitrogen permeated from the cathode, and water vapor after the reaction; the exhaust and drain valve 213 includes an exhaust valve and a drain valve; the exhaust and drain valve 213 is used to discharge the second exhausted gas after the reaction, for example, nitrogen permeated from the cathode, water vapor after the reaction, and liquid water after the reaction; the hydrogen circulation pump 214 is used to pump the unreacted hydrogen back into the hydrogen inlet of the fuel cell 220, that is, to pump the hydrogen in the pipeline of the hydrogen circulation subsystem back into the anode to realize hydrogen circulation.

[0037] The fuel cell is used to react hydrogen and oxygen in the air to generate electric energy and water vapor.

[0038] In an embodiment of the present application, a fuel cell is provided with an anode and a cathode. Hydrogen at the anode reacts with oxygen in the air at the cathode to generate electric energy. The hydrogen at the anode is consumed, that is, the oxygen in the air at the cathode reacts with the hydrogen at the anode.

[0039] The cooling subsystem is used to control the temperature of the fuel cell by using the circulating coolant. Among them, the coolant outlet temperature sensor 215 is used to detect the temperature of the coolant at the liquid outlet of the fuel cell 220; the water pump 216 is used to accelerate the circulation rate of the coolant; the radiator 219 is used to cool the high-temperature coolant; the heater 218 is used to heat the coolant; the three-way valve 217 is used to control the flow direction of the coolant to control the temperature of the fuel cell by using the heated / cooled coolant.

[0040] In an embodiment of the present application, when the fuel cell is operating normally, the fuel cell engine 200 is located inside the vehicle. Air enters the air compressor after being filtered by the air filter, then is cooled by the intercooler, enters the humidifier for humidification, and then enters the cathode through the inlet stack cut-off valve. The first exhaust gas after the reaction, that is, the unreacted oxygen and nitrogen, flows out of the fuel cell through the outlet stack cut-off valve. Dry hydrogen enters the hydrogen injection valve after being decompressed by the high-pressure gas cylinder through the pressure reducing valve, and the hydrogen injection valve injects the hydrogen. The fuel cell uses the oxygen and hydrogen in the air to react to generate electric energy. The hydrogen outlet of the fuel cell inputs the unreacted hydrogen, the nitrogen permeated from the cathode, and the water vapor after the reaction into the steam-water separator. The steam-water separator discharges the liquid water after the reaction and the second exhaust gas, that is, the nitrogen permeated from the cathode and the separated water vapor, out of the hydrogen circulation subsystem through the exhaust and drainage valve 213; the remaining gas, that is, the unreacted hydrogen, is pumped to the hydrogen inlet of the fuel cell by the hydrogen circulation pump to enter the anode together with the dry hydrogen. At the same time, the cooling subsystem raises the temperature of the fuel cell by turning on the heater and the water pump; the temperature of the fuel cell is reduced by turning off the heater to utilize the coolant circulation to achieve temperature control of the fuel cell.

[0041] The control subsystem is used to control the fuel cell engine test bench system. Among them, the control unit 301 communicates with the electronic device 100 through a wired or wireless network; the control unit 301 is electrically connected to the air compressor 202, the inlet stack cut-off valve 205, the outlet stack cut-off valve 206, the air inlet stack pressure sensor 207, the pressure reducing valve 209, the hydrogen injection valve 210, the hydrogen inlet stack pressure sensor 211, the exhaust and drainage valve 213, the hydrogen circulation pump 214, the coolant outlet temperature sensor 215, the three-way valve 217, and the heater 218 respectively.

[0042] The control unit 301 is used to obtain the values detected by each sensor, such as the air inlet stack pressure sensor 207, the hydrogen inlet stack pressure sensor 211, and the coolant outlet temperature sensor 215, and feedback them to the electronic device 100.

[0043] In this embodiment, the electronic device 100 communicates with the control unit 301 in the fuel cell engine 200 through a wired or wireless network to obtain the values detected by each sensor. And the control unit 301 controls the air compressor 202, the inlet stack shut-off valve 205, the outlet stack shut-off valve 206, the pressure reducing valve 209, the hydrogen injection valve 210, the exhaust and drainage valve 213, the hydrogen circulation pump 214, the three-way valve 217, and the heater 218.

[0044] The electronic device 100 can test the fuel cell life of the vehicle.

[0045] Exemplarily, the electronic device 100 performs multiple start-stop operations on the fuel cell engine; wherein, during the shutdown process of the start-stop operation, the hydrogen in the fuel cell is consumed; then the air in the cathode of the fuel cell is controlled to enter the anode of the fuel cell to create a hydrogen-air interface at the anode of the fuel cell during the start-up process of the next start-stop operation; when the number of start-stop operations is greater than or equal to a preset first cycle number, the performance of the fuel cell is detected; and the test result of the fuel cell life is obtained according to the detected result.

[0046] The electronic device 100 is a control device of the vehicle, for example, a vehicle console, an in-vehicle computer, etc. It can also be a computer, a server, etc. independent of the vehicle. There is no limitation here either.

[0047] Please refer to Figure 4 , Figure 4 is a flowchart of a method for testing the fuel cell life shown in an exemplary embodiment of the present application. This method can be applied to Figure 1 the implementation environment shown, and is specifically executed by the electronic device 100 in this implementation environment. It should be understood that this method can also be applicable to other exemplary implementation environments and be specifically executed by devices in other implementation environments. This embodiment does not limit the implementation environment applicable to this method.

[0048] As Figure 4 shown, in an exemplary embodiment, the method for testing the fuel cell life at least includes steps S410 to S430, which are introduced in detail as follows:

[0049] Step S410, perform multiple start-stop operations on the fuel cell engine; wherein, during the shutdown process of the start-stop operation, the hydrogen in the fuel cell is consumed; then the air in the cathode of the fuel cell is controlled to enter the anode of the fuel cell to create a hydrogen-air interface at the anode of the fuel cell during the start-up process of the next start-stop operation.

[0050] In the embodiments of the present application, one start-stop operation of the fuel cell includes one start-up operation and one shutdown operation; the shutdown process of the start-stop operation is within the shutdown operation.

[0051] In this way, during the shutdown process of the start-stop operation, the hydrogen in the fuel cell is consumed, and then the air in the cathode of the fuel cell is controlled to enter the anode, without the need to wait for a long time by natural placement, which speeds up the rate of the fuel cell life test.

[0052] Figure 5 Yes Figure 4 The flowchart of step S410 in the exemplary embodiment shown. As Figure 5 shown, multiple start-stop operations are performed on the fuel cell, including steps S510 to S550, which are introduced in detail as follows:

[0053] Step S510, start the fuel cell engine and increase the actual operating power of the fuel cell engine to a preset target operating power.

[0054] In an embodiment of the present application, starting the fuel cell engine means starting the control of the air compressor, the inlet stack stop valve, the outlet stack stop valve, the pressure reducing valve, the hydrogen injection valve, the exhaust and drainage valve, the hydrogen circulation pump, the three-way valve, and the heater.

[0055] Further, increasing the actual operating power of the engine to the preset target operating power includes: increasing the actual operating power of the engine to the preset target power at a preset first rate. Wherein, 1kW / s ≤ f1 ≤ 5kW / s, f1 is the preset first rate; 40%Pe ≤ P ≤ 70%Pe, Pe is the rated operating power of the fuel cell, and P is the preset target power. The power range of 40%Pe to 70%Pe is the comfortable working area of the fuel cell, that is, within this power range, the fuel cell can reach the hydrothermal equilibrium state.

[0056] Step S520, after an interval of a preset first duration, reduce the actual operating power of the fuel cell engine to a preset idle power.

[0057] Wherein, 180 seconds ≤ t1 ≤ 300 seconds, t1 is the preset first duration. It should be noted that the engine operates at the target power for the preset first duration, and the temperature of the coolant at the outlet detected by the coolant outlet temperature sensor gradually increases, and after the preset first duration, it is greater than or equal to the best working temperature of the fuel cell. The best working temperature of the fuel cell is the temperature at which the fuel cell generates the highest electrical energy efficiency. In some embodiments, the best working temperature of the fuel cell is between 60 degrees Celsius and 80 degrees Celsius.

[0058] In this way, by simulating the power change of the fuel cell during optimal operation, the reliability and rate of the life test are improved.

[0059] Further, reducing the actual operating power of the engine to a preset idle power includes: reducing the power of the engine to the preset idle power at a preset second rate. Wherein, 1kW / s ≤ f2 ≤ 5kW / s, and f2 is the preset second rate.

[0060] In this way, after starting the engine of the fuel cell, by first increasing the actual operating power of the engine to the preset target operating power and, after a preset first duration, reducing the actual operating power of the engine to the preset idle power, the power change of the fuel cell during optimal operation can be simulated, improving the rate and reliability of the life test.

[0061] Step S530, in response to a preset shutdown instruction, stop supplying hydrogen to the fuel cell and maintain the air supply to the fuel cell to consume the hydrogen in the fuel cell; then shut down the fuel cell engine.

[0062] In an embodiment of the present application, the preset shutdown instruction is an instruction sent by an electronic device to the control unit of the fuel cell engine for shutting down the fuel cell engine, or an instruction actively sent by the control unit for shutting down the fuel cell engine. Wherein, shutting down the fuel cell engine means shutting down the air compressor, the inlet stack isolation valve, the outlet stack isolation valve, the pressure reducing valve, the hydrogen injection valve, the exhaust and drainage valve, the hydrogen circulation pump, the three-way valve, and the heater.

[0063] Further, shutting down the fuel cell engine includes: obtaining the third hydrogen pressure of the fuel cell; stopping the air supply to the fuel cell according to the third hydrogen pressure and shutting down the fuel cell engine. Wherein, the third hydrogen pressure is the hydrogen pressure at the anode after consuming the hydrogen in the fuel cell.

[0064] The third hydrogen pressure is detected and obtained by a hydrogen inlet stack pressure sensor after consuming the hydrogen in the fuel cell.

[0065] Further, stopping the air supply to the fuel cell according to the third hydrogen pressure includes: closing the air compressor, the inlet stack isolation valve, and the outlet stack isolation valve to stop the air supply to the fuel cell when the third hydrogen pressure is less than or equal to a preset second target pressure. Wherein, the preset second target pressure is greater than or equal to an absolute pressure of 70 kPa and less than or equal to 80 kPa.

[0066] Further, when closing the air compressor, the inlet stack isolation valve, and the outlet stack isolation valve, it also includes: closing the water pump.

[0067] In this way, oxygen is conserved and hydrogen is consumed during the shutdown process, eliminating the need to add nitrogen purging equipment. As a result, the consumption of anode hydrogen can be rapidly achieved without generating high potential, improving the reliability of the life test while accelerating the rate of the life test.

[0068] It should be noted that after the air compressor, the inlet stack stop valve, and the outlet stack stop valve, it is also necessary to control the air compressor, the inlet stack stop valve, the outlet stack stop valve, the pressure reducing valve, the hydrogen injection valve, the exhaust and drainage valve, the hydrogen circulation pump, the three-way valve, and the heater to be in the closed state to shut down the engine.

[0069] Figure 6 Yes Figure 5 The flowchart of step S530 in the illustrated embodiment in an exemplary embodiment. As Figure 6 shown, stopping the supply of hydrogen to the fuel cell and maintaining the air supply to the fuel cell includes steps S610 to S630, which are introduced in detail as follows:

[0070] Step S610, controlling the fuel cell to discharge according to a preset target current.

[0071] In the embodiment of the present application, controlling the fuel cell to discharge at a preset target current means controlling the output current of the fuel cell to be the preset target current. Among them, the preset target current is greater than or equal to 10 A and less than or equal to 50 A. In this way, when hydrogen reacts with oxygen in the air, the high voltage generated during the reaction can be eliminated through discharge, thus not causing additional attenuation to the life of the fuel cell and increasing the reliability of the test results.

[0072] Step S620, obtaining the first hydrogen pressure of the fuel cell; where the first hydrogen pressure is the hydrogen pressure at the anode after controlling the fuel cell to discharge at a preset target current.

[0073] Among them, the first hydrogen pressure is detected and obtained by a hydrogen inlet stack pressure sensor after controlling the fuel cell to discharge at a preset target current.

[0074] In the embodiment of the present application, it is also necessary to control the hydrogen-air pressure difference of the fuel cell within a preset pressure difference range. The hydrogen-air pressure difference is the pressure difference between the hydrogen pressure at the anode and the air pressure at the cathode, and the air pressure at the cathode is detected and obtained by an air inlet stack pressure sensor.

[0075] Step S630, controlling the hydrogen circulation subsystem to stop supplying hydrogen to the fuel cell according to the first hydrogen pressure; and controlling the air supply subsystem to continuously supply air to the cathode of the fuel cell.

[0076] Further, controlling the hydrogen circulation subsystem to stop supplying hydrogen to the fuel cell according to the first hydrogen pressure includes: closing the hydrogen injection valve in the hydrogen circulation subsystem according to the first hydrogen pressure to stop supplying hydrogen to the fuel cell.

[0077] Further, closing the hydrogen injection valve in the hydrogen circulation subsystem according to the first hydrogen pressure includes: closing the hydrogen injection valve in the hydrogen circulation subsystem when the third hydrogen pressure is less than or equal to a preset first target pressure. Wherein, the preset first target pressure is greater than or equal to 120 kPa absolute pressure and less than or equal to 140 kPa.

[0078] Further, controlling the air supply subsystem to continuously supply air to the cathode of the fuel cell includes: controlling the air compressor of the fuel cell to operate according to a preset lower limit pressure and a preset first lower limit speed; wherein, the lower limit pressure is the lowest pressure when the air compressor operates normally; the preset first lower limit speed is the lowest speed when the air compressor operates normally.

[0079] In this way, controlling the hydrogen circulation subsystem to stop supplying hydrogen to the fuel cell according to the first hydrogen pressure, and then controlling the air supply subsystem to continuously supply air to the cathode of the fuel cell to quickly consume the hydrogen in the fuel cell. At the same time, the high voltage generated during the reaction is eliminated through discharging, so that no additional attenuation will be brought to the life of the fuel cell. While quickly consuming the hydrogen at the anode, the reliability of the test results is increased.

[0080] Step S540, controlling the air at the cathode of the fuel cell to enter the anode of the fuel cell.

[0081] It should be noted that by controlling the air at the cathode of the fuel cell to enter the anode of the fuel cell, compared with the fuel cell placed naturally, the air can be accelerated to quickly penetrate from the cathode of the fuel cell into the anode of the fuel cell, thereby improving the rate of fuel cell life detection.

[0082] Figure 7 Yes Figure 5 The flowchart of step S540 in the shown embodiment in an exemplary embodiment. As Figure 7 shown, controlling the air at the cathode of the fuel cell to enter the anode of the fuel cell includes steps S710 to S730, which are introduced in detail as follows:

[0083] Step S710, consuming the hydrogen in the pipeline of the hydrogen circulation subsystem.

[0084] It should be noted that the above method of stopping the supply of hydrogen to the fuel cell and maintaining the air supply to the fuel cell can only consume the hydrogen present in the anode. There is still a small amount of unreacted hydrogen in the pipeline of the hydrogen circulation subsystem of the fuel cell. Therefore, it is necessary to consume the hydrogen in the pipeline.

[0085] Figure 8 Yes Figure 7 It is a flowchart of step S710 in the exemplary embodiment shown. As Figure 8 shown, consuming the hydrogen in the pipeline of the hydrogen circulation subsystem includes steps S810 to S840, which are introduced in detail as follows:

[0086] Step S810, start the hydrogen circulation pump in the hydrogen circulation subsystem.

[0087] It should be noted that after starting the hydrogen circulation pump in the hydrogen circulation subsystem, control the hydrogen circulation pump to operate at a preset second lower limit speed; wherein, the preset second lower limit speed is the lowest speed when the hydrogen circulation pump works normally.

[0088] Step S820, when the running duration of the hydrogen circulation pump is greater than or equal to a preset second duration, turn off the hydrogen circulation pump; and during the running of the hydrogen circulation pump, obtain the first change trend of the first single-cell voltage of the fuel cell.

[0089] Among them, 2 seconds ≤ thp1 ≤ 10 seconds, and thp1 is the preset second duration.

[0090] It should be noted that the fuel cell has multiple battery cells, and the first single-cell voltage is the voltage across one battery cell during the operation of the hydrogen circulation pump.

[0091] Step S830, control the air supply subsystem to supply air to the cathode of the fuel cell according to the first change trend; and during the process of supplying air, obtain the second change trend of the second single-cell voltage of the fuel cell. Among them, the second single-cell voltage is the voltage across one battery cell of the fuel cell during the operation of the air compressor.

[0092] Furthermore, controlling the air supply subsystem to supply air to the cathode of the fuel cell according to the first change trend includes: when the first change trend does not include an upward trend, control the air supply subsystem to supply air to the cathode; when the duration of the air supply subsystem supplying air to the cathode is greater than or equal to a preset third duration, control the air supply subsystem to stop supplying air to the cathode. In this way, through the first change trend of the first single-cell voltage of the fuel cell, it can be accurately determined whether there is a reaction between oxygen and hydrogen, so as to determine the reaction situation between oxygen and hydrogen and be used to assist in judging the consumption situation of hydrogen.

[0093] Further, controlling the air supply subsystem to supply air to the cathode includes: starting the air compressor, the in-stack isolation valve, and the out-of-stack isolation valve of the fuel cell to supply air to the cathode;

[0094] Further, controlling the air supply subsystem to stop supplying air to the cathode includes: closing the air compressor, the in-stack isolation valve, and the out-of-stack isolation valve to stop supplying air to the cathode of the fuel cell.

[0095] Wherein, 1 second ≤ tac1 ≤ 5 seconds, and tac1 is a preset third duration.

[0096] In the embodiment of the present application, when the first change trend includes an upward trend, restart the hydrogen circulation pump in the hydrogen circulation subsystem until the first change trend of the first single cell voltage does not include an upward trend.

[0097] It should be noted that the reasons for the non-rise of the first single cell voltage include: the hydrogen in the hydrogen circulation subsystem has been completely consumed, or there is still hydrogen pumped into the anode from the hydrogen circulation subsystem at the anode, but there is a lack of oxygen for reaction with hydrogen at the cathode. Therefore, it is necessary to open the air compressor, the in-stack isolation valve, and the out-of-stack isolation valve to introduce air into the cathode so that there is oxygen at the cathode to react with the hydrogen at the anode.

[0098] Among them, opening the air compressor, the in-stack isolation valve, and the out-of-stack isolation valve means controlling the air compressor to operate at a preset lower limit pressure and a preset first lower limit speed; controlling the valve opening of the in-stack isolation valve to be a preset first valve opening; controlling the valve opening of the out-of-stack isolation valve to be a preset second valve opening; 10% ≤ k1 ≤ 30%; k1 is the preset first valve opening; 10% ≤ k2 ≤ 30%; k2 is the preset second valve opening. In this way, by controlling the air compressor to operate at a preset lower limit pressure and a preset first lower limit speed, and controlling the valve openings of both the in-stack isolation valve and the out-of-stack isolation valve within 10% to 30%, while ensuring the fresh control input at the cathode, energy is saved.

[0099] In the embodiment of the present application, if the first single cell voltage first rises and then falls, that is, the first change trend of the first single cell voltage includes an upward trend and a downward trend, it means that hydrogen is consumed at the anode, that is, there is hydrogen in the hydrogen circulation subsystem that is pumped into the anode by the hydrogen circulation pump. Therefore, after the first single cell voltage drops, confirm that the hydrogen currently pumped into the anode by the hydrogen circulation pump is consumed. Then, reuse the hydrogen circulation pump to pump the remaining hydrogen in the hydrogen circulation subsystem into the anode for consumption until the first single cell voltage does not rise, that is, it keeps falling.

[0100] Step S840: When the second change trend includes an upward trend, consume the hydrogen in the pipeline of the hydrogen circulation subsystem again; and / or when the second change trend does not include an upward trend, determine that the consumption of hydrogen in the pipeline of the hydrogen circulation subsystem of the fuel cell is completed.

[0101] In the embodiment of the present application, if the second change trend includes an upward trend, it indicates that there is still hydrogen in the anode reacting with the oxygen in the newly input air at the cathode, that is, there is still hydrogen in the hydrogen circulation subsystem. Therefore, when the second monomer voltage shows an upward trend, it is necessary to pump the hydrogen in the hydrogen circulation subsystem into the anode again for consumption. If the second change trend does not include an upward trend, it means that there is no hydrogen in the anode that can react with the oxygen in the freshly input air, that is, the hydrogen in the hydrogen circulation subsystem has been consumed.

[0102] It should be noted that after closing the air compressor, the inlet stack stop valve, and the outlet stack stop valve, the number of times of closing the air compressor, the inlet stack stop valve, and the outlet stack stop valve can be obtained; when the number is less than the preset number threshold, it is determined whether the hydrogen consumption is completed by whether the second change trend includes an upward trend; when the number is greater than or equal to the preset number threshold, it is directly determined that the consumption of hydrogen in the pipeline of the hydrogen circulation subsystem of the fuel cell is completed. Among them, the preset number threshold is greater than or equal to 2 and less than or equal to 7. It should be noted that the setting of the number threshold can be adjusted according to the actual situation. Generally speaking, when the number reaches the number threshold, it can be confirmed that the hydrogen in the hydrogen circulation subsystem has been consumed.

[0103] In this way, the hydrogen in the hydrogen circulation subsystem is input into the anode by the hydrogen circulation pump to react with the oxygen at the cathode. When the oxygen at the cathode is insufficient, the air supply subsystem is controlled to supply air to the cathode of the fuel cell to input fresh oxygen, so that the hydrogen pumped into the anode by the hydrogen circulation pump can react with sufficient oxygen, thereby realizing the rapid consumption of hydrogen in the hydrogen circulation subsystem. At the same time, during the above hydrogen consumption process, since the hydrogen in the hydrogen circulation subsystem is the residual hydrogen during the normal operation of the fuel cell, that is, the hydrogen content is low. Therefore, when the hydrogen pumped into the anode by the hydrogen circulation pump can react with sufficient oxygen, the stack will not have a high potential and will not cause additional attenuation to the life of the stack, thereby increasing the reliability of the test results. At the same time, by consuming the hydrogen, it can be ensured that no hydrogen-oxygen interface will be generated during the subsequent process of controlling the air at the cathode of the fuel cell to enter the anode of the fuel cell, thereby protecting the fuel cell.

[0104] Step S720: Maintain the input of air at the cathode, heat the fuel cell, and obtain the second hydrogen pressure of the fuel cell.

[0105] At this time, the input of air to the cathode is maintained, that is, the air compressor, the in-pile cut-off valve, and the out-of-pile cut-off valve remain open to maintain the input of air.

[0106] The second hydrogen pressure is the hydrogen pressure at the anode after the fuel cell is heated. The second hydrogen pressure at the anode is detected and obtained by the hydrogen in-pile pressure sensor after the fuel cell is heated.

[0107] In the embodiment of the present application, the air at the cathode of the fuel cell enters the anode of the fuel cell through the proton exchange membrane of the fuel cell. Since the oxygen permeability in the fuel cell is the product of its diffusivity and solubility. Both the diffusivity and solubility are related to temperature, so the higher the temperature, the greater the permeability. Therefore, by increasing the temperature of the fuel cell, the oxygen in the air can be accelerated to permeate from the cathode to the anode. At the same time, at this time, the pressure at the cathode is higher than that at the anode, and under the action of the pressure difference, it is also beneficial to the permeation of oxygen. Therefore, by heating the fuel cell, the rate of air entering the anode of the fuel cell through the proton exchange membrane of the fuel cell can be increased.

[0108] Further, heating the fuel cell includes: turning on the water pump and the heater to heat the fuel cell with the heated coolant.

[0109] In one embodiment of the present application, after the water pump is turned on, the water pump is controlled to operate at a preset target speed. Wherein, the target speed is greater than or equal to 2000 rpm and less than or equal to 4000 rpm.

[0110] Heating the fuel cell with the heated coolant, that is, using the heated coolant to raise the temperature of the fuel cell to a preset target temperature, and then maintaining the temperature of the fuel cell at the preset target temperature.

[0111] Step S730, stop heating the fuel cell according to the second hydrogen pressure.

[0112] In the case where the second hydrogen pressure is greater than or equal to a preset pressure threshold, the heater is controlled to be in the off state to stop heating the fuel cell.

[0113] At this time, since the fuel cell is not heated, as time goes by, the temperature of the fuel cell will gradually decrease.

[0114] It should be noted that since the hydrogen has been consumed, therefore, the second hydrogen pressure characterizes the volume of air permeating from the cathode to the anode. Since the oxygen permeability is greater than the nitrogen permeability, most of the gas at the anode is oxygen.

[0115] Further, 85 kPa ≤ pa3 ≤ 95 kPa, or 95 kPa ≤ pa3 ≤ 105 kPa, where pa3 is a preset pressure threshold. By setting the preset pressure threshold, it represents that different volumes of oxygen penetrate into the anode, simulating the situation where the anode is penetrated by oxygen at different shutdown times in actual conditions, which is more in line with the actual vehicle usage situation.

[0116] In this embodiment, after the heater is turned off, in order to accelerate the cooling rate of the fuel cell, the radiator can be used to cool the coolant to achieve the cooling of the fuel cell.

[0117] In the embodiment of the present application, first, the hydrogen in the pipeline of the hydrogen circulation subsystem is consumed, then the input of air at the cathode is maintained to heat the fuel cell, and the second hydrogen pressure of the fuel cell is obtained to stop heating the fuel cell according to the second hydrogen pressure. In this way, by consuming the hydrogen in the pipeline, it can be ensured that no hydrogen-oxygen interface is generated during the subsequent process of controlling the air at the cathode of the fuel cell to enter the anode of the fuel cell, thereby protecting the fuel cell. Then, through heating, the rate of air infiltrating from the cathode into the anode can be accelerated, and then the fuel cell is stopped from being heated according to the second hydrogen pressure to achieve the cooling of the fuel cell, simulating the cold start under normal usage conditions, so that the rate of fuel cell life detection can be accelerated while improving the reliability of the test results.

[0118] Step S550: Restart the fuel cell engine to perform the next start-stop operation until the number of start-stop operations is greater than or equal to a preset second cycle number.

[0119] In the embodiment of the present application, in each cycle, the fuel cell engine is started to increase the actual operating power of the fuel cell engine to a preset target operating power and then decrease it to a preset idle power to simulate the power change when the fuel cell is operating at its best. Then, in response to a preset shutdown instruction, the supply of hydrogen to the fuel cell is stopped, and the air supply to the fuel cell is maintained to consume the hydrogen in the fuel cell, and then the fuel cell engine is turned off. Then, the air at the cathode of the fuel cell is controlled to enter the anode of the fuel cell to artificially create a hydrogen-air interface at the anode of the fuel cell during the starting process of the next start-stop operation. Compared with the need to naturally place the fuel cell in the air for a long time after shutdown and then start the fuel cell, the time-consuming of fuel cell life detection is reduced, and the rate of fuel cell life detection is accelerated.

[0120] Further, restarting the fuel cell engine includes: obtaining the temperature of the fuel cell and the ambient temperature; controlling the fuel cell engine to start when the temperature of the fuel cell is less than or equal to the ambient temperature. In this way, it can ensure the cold start of the fuel cell engine to simulate the normal starting situation and guarantee the accuracy of life detection.

[0121] Further, obtaining the temperature of the fuel cell and the ambient temperature includes: obtaining the temperature detected by the coolant outlet temperature sensor of the stack, and determining this temperature as the temperature of the fuel cell.

[0122] Step S420, when the number of start-stop operations is greater than or equal to a preset first cycle number, detecting the performance of the fuel cell.

[0123] It should be noted that detecting the performance of the fuel cell means detecting the voltage of the fuel cell under different current densities.

[0124] Step S430, obtaining the test result of the fuel cell life according to the detected result.

[0125] Wherein, the test result of the fuel cell life is the performance degradation amplitude of the fuel cell after experiencing multiple start-stop tests.

[0126] In the embodiment of the present application, the preset second cycle number is 500, and the preset first cycle number is 100, that is, 500 start-stop tests are performed on the fuel cell. Among them, the performance of the fuel cell is detected every 100 start-stop tests, and the fuel cell performance degradation curve as shown in Figure 9 is obtained. Wherein, the x-axis is the current density output by a single cell of the fuel cell, and the y-axis is the voltage across both ends of a single cell of the fuel cell. Curve 1 is the voltage curve of a single cell of the fuel cell under different current densities before the life test; Curve 2 is the voltage curve of a single cell of the fuel cell under different current densities after 100 start-stop tests; Curve 3 is the voltage curve of a single cell of the fuel cell under different current densities after 200 start-stop tests; Curve 4 is the voltage curve of a single cell of the fuel cell under different current densities after 300 start-stop tests; Curve 5 is the voltage curve of a single cell of the fuel cell under different current densities after 400 start-stop tests; Curve 6 is the voltage curve of a single cell of the fuel cell under different current densities after 500 start-stop tests. As Figure 9 can be seen, after multiple start-stop tests, the single cells in the fuel cell can no longer work at a relatively high current density. By Figure 9It can be calculated that the performance degradation amplitude of the fuel cell under different current densities. For example, when the current density is 1.1 A / cm2, after 500 start-stop tests of a single cell of the fuel cell, the performance degradation amplitude is (0.67 - 0.57) × 100% / 0.67 = 14.9%. Among them, 0.67 is the voltage value of a single cell of the fuel cell at a current density of 1.1 A / cm2 before the life test, and 0.57 is the voltage value of a single cell of the fuel cell at a current density of 1.1 A / cm2 after 500 start-stop tests. This performance degradation amplitude can not only reflect the life of a single cell of the fuel cell but also characterize the life of the fuel cell.

[0127] It can be seen that in this application, multiple start-stop operations are performed on the fuel cell engine where the fuel cell is located. During the shutdown process of the start-stop operation, the hydrogen in the fuel cell is consumed. Then, the air in the cathode of the fuel cell is controlled to enter the anode of the fuel cell to create a hydrogen-air interface at the anode of the fuel cell during the startup process of the next start-stop operation. When the number of start-stop operations is greater than or equal to a preset first cycle number, the performance of the fuel cell is detected. According to the detection result, the test result of the fuel cell life is obtained. In this way, the hydrogen in the fuel cell is quickly consumed during the shutdown process of multiple start-stop operations on the fuel cell. Then, after the fuel cell stops, the air in the cathode of the fuel cell is controlled to enter the anode of the fuel cell, so that a hydrogen-air interface is artificially created at the anode of the fuel cell during the startup process of the next start-stop operation. Compared with the situation where the fuel cell needs to be naturally placed in the air for a long time after shutdown and then the fuel cell is started, the time-consuming of the fuel cell life detection is reduced, and the rate of the fuel cell life detection is accelerated. At the same time, by consuming the hydrogen in the fuel cell and controlling the air in the cathode of the fuel cell to enter the anode of the fuel cell, no high potential appears during the process of creating the hydrogen-air interface, avoiding additional attenuation of the life of the stack during this process, thereby improving the reliability of the test result.

[0128] Figure 10 is a block diagram of a device for testing the life of a fuel cell shown in an exemplary embodiment of this application. This device can be applied to Figure 1 the shown implementation environment and is specifically configured in the electronic device 100. This device can also be applicable to other exemplary implementation environments and is specifically configured in other devices. This embodiment does not limit the implementation environment applicable to this device.

[0129] As Figure 10 shown, this exemplary device for testing the life of a fuel cell includes:

[0130] The start-stop operation module 1001 is configured to perform multiple start-stop operations on the fuel cell engine; wherein, during the shutdown process of the start-stop operation, hydrogen in the fuel cell is consumed; then, air at the cathode of the fuel cell is controlled to enter the anode of the fuel cell, so as to create a hydrogen-air interface at the anode of the fuel cell during the startup process of the next start-stop operation.

[0131] The detection module 1002 is configured to detect the performance of the fuel cell when the number of start-stop operations is greater than or equal to a preset first cycle number.

[0132] The acquisition module 1003 is configured to obtain the test result of the fuel cell life according to the detection result.

[0133] In an exemplary embodiment, the start-stop operation module 1001 includes:

[0134] The power boost unit is configured to start the fuel cell engine and boost the actual operating power of the fuel cell engine to a preset target operating power.

[0135] The power reduction unit is configured to reduce the actual operating power of the fuel cell engine to a preset idle power at intervals of a preset first time period.

[0136] The response unit is configured to respond to a preset shutdown instruction, stop supplying hydrogen to the fuel cell, and maintain the air supply to the fuel cell to consume hydrogen in the fuel cell; then shut down the fuel cell engine.

[0137] The control unit is configured to control air at the cathode of the fuel cell to enter the anode of the fuel cell.

[0138] The restart unit is configured to restart the fuel cell engine to perform the next start-stop operation until the number of start-stop operations is greater than or equal to a preset second cycle number.

[0139] In an exemplary embodiment, the response unit includes:

[0140] The discharge unit is configured to control the fuel cell to discharge according to a preset target current.

[0141] The first hydrogen pressure acquisition unit is configured to acquire the first hydrogen pressure of the fuel cell.

[0142] The supply control unit is configured to control the hydrogen circulation subsystem to stop supplying hydrogen to the fuel cell according to the first hydrogen pressure; and control the air supply subsystem to continuously supply air to the cathode of the fuel cell.

[0143] In an exemplary embodiment, the control unit includes:

[0144] Consumption unit, configured to consume hydrogen in the pipeline of the hydrogen circulation subsystem;

[0145] Heating unit, configured to heat the fuel cell and obtain the second hydrogen pressure of the fuel cell;

[0146] Stop heating unit, configured to stop heating the fuel cell according to the second hydrogen pressure.

[0147] In an exemplary embodiment, the consumption unit includes:

[0148] Hydrogen circulation pump start unit, configured to close the hydrogen circulation pump when the running duration of the hydrogen circulation pump is greater than or equal to a preset second duration; and during the running process of the hydrogen circulation pump, obtain the first change trend of the first single-cell voltage of the fuel cell;

[0149] Air supply unit, configured to control the air supply subsystem to supply air to the cathode of the fuel cell according to the first change trend; and during the process of supplying air, obtain the second change trend of the second single-cell voltage of the fuel cell;

[0150] Hydrogen consumption confirmation unit, configured to re-consume hydrogen in the pipeline of the hydrogen circulation subsystem when the second change trend includes an upward trend; and / or, determine that the hydrogen consumption in the pipeline of the hydrogen circulation subsystem is completed when the second change trend does not include an upward trend.

[0151] In an exemplary embodiment, the air supply unit includes:

[0152] Cathode supply unit, configured to control the air supply subsystem to supply air to the cathode when the first change trend does not include an upward trend.

[0153] In an exemplary embodiment, the restart unit includes:

[0154] Temperature acquisition unit, configured to acquire the temperature of the fuel cell and the ambient temperature;

[0155] Start unit, including: controlling the fuel cell engine to start when the temperature of the fuel cell is less than or equal to the ambient temperature.

[0156] It should be noted that the device for testing the life of a fuel cell provided in the above embodiments and the method for testing the life of a fuel cell provided in the above embodiments belong to the same concept. The specific ways in which each module and unit perform operations have been described in detail in the method embodiments and will not be elaborated here. In practical applications, the device for testing the life of a fuel cell provided in the above embodiments can, according to needs, allocate the above functions to different functional modules, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above. This is not limited here either.

[0157] An embodiment of the present application also provides an electronic device, including: one or more processors; a storage device for storing one or more programs, which, when executed by the one or more processors, cause the electronic device to implement the method for testing the life of a fuel cell provided in each of the above embodiments.

[0158] Figure 11 The structural schematic diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application is shown. It should be noted that Figure 11 The computer system 1100 of the electronic device shown is only an example and should not impose any limitations on the functions and usage scope of the embodiments of the present application.

[0159] As Figure 11 shown, the computer system 1100 includes a central processing unit (CPU) 1101, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 1102 or the program loaded from the storage section 1108 into the random access memory (RAM) 1103, such as executing the method described in the above embodiments. In the RAM 1103, various programs and data required for system operations are also stored. The CPU 1101, ROM 1102, and RAM 1103 are connected to each other through a bus 1104. The input / output (I / O) interface 1105 is also connected to the bus 1104.

[0160] The following components are connected to the I / O interface 1105: an input section 1106 including a keyboard, a mouse, etc.; an output section 1107 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 1108 including a hard disk, etc.; and a communication section 1109 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 1109 performs communication processing via a network such as the Internet. A drive 1110 is also connected to the I / O interface 1105 as needed. A removable medium 1111, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 1110 as needed so that a computer program read from it can be installed into the storage section 1108 as needed.

[0161] Specifically, according to an embodiment of the present application, the processes described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for performing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication section 1109, and / or installed from the removable medium 1111. When the computer program is executed by a central processing unit (CPU) 1101, various functions defined in the system of the present application are executed.

[0162] It should be noted that the computer-readable medium shown in the embodiments of the present application may be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. A computer-readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable computer program. Such a propagated data signal may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted by any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0163] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. Among them, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and the above module, program segment, or part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order from that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram or flowchart, and the combination of blocks in the block diagram or flowchart, may be implemented by a dedicated hardware-based system for performing the specified functions or operations, or may be implemented by a combination of dedicated hardware and computer instructions.

[0164] The units involved in the embodiments described in this application can be implemented in software or in hardware, and the described units can also be provided in a processor. Among them, the names of these units do not, in some cases, constitute a limitation on the units themselves.

[0165] Another aspect of this application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the road condition refreshing method as described above is implemented. The computer-readable storage medium can be included in the electronic device described in the above embodiments, or can exist alone without being assembled into the electronic device.

[0166] Another aspect of this application also provides a computer program product or a computer program. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the road condition refreshing method provided in the above various embodiments.

[0167] The above content is only a preferred exemplary embodiment of this application and is not used to limit the implementation of this application. Those of ordinary skill in the art can easily make corresponding adaptations or modifications according to the main concept and spirit of this application. Therefore, the protection scope of this application should be subject to the protection scope required by the claims.

Claims

1. A method for testing the life of a fuel cell, characterized in that: The fuel cell is arranged in a fuel cell engine; the method comprises: Starting the fuel cell engine and increasing the actual operating power of the fuel cell engine to a preset target operating power; At a preset first time interval, reducing the actual operating power of the fuel cell engine to a preset idle power; In response to a preset shutdown instruction, the supply of hydrogen to the fuel cell is stopped, and the air supply to the fuel cell is maintained to consume the hydrogen in the fuel cell; then a third hydrogen pressure of the fuel cell is obtained, the air supply to the fuel cell is stopped according to the third hydrogen pressure, and the fuel cell engine is shut down; Controlling the air at the cathode of the fuel cell to enter the anode of the fuel cell to create a hydrogen-air interface at the anode of the fuel cell during the start-up process of the next start-stop operation; Restarting the fuel cell engine to perform the next start-stop operation until the number of start-stop operations is greater than or equal to a preset second cycle number; When the number of the start-stop operations is greater than or equal to a preset first cycle number, detecting the performance of the fuel cell; The test result of the fuel cell life is obtained according to the detection result.

2. The method according to claim 1, characterized in that The fuel cell engine further comprises a hydrogen circulation subsystem and an air supply subsystem; the hydrogen circulation subsystem is used to supply hydrogen to the anode of the fuel cell; the air supply subsystem is used to supply air to the cathode of the fuel cell; The stopping of supplying hydrogen to the fuel cell and maintaining air supply to the fuel cell comprises: Controlling the fuel cell to discharge according to a preset target current; obtaining a first hydrogen pressure of the fuel cell; The hydrogen circulation subsystem is controlled to stop supplying hydrogen to the fuel cell according to the first hydrogen pressure; and the air supply subsystem is controlled to continuously supply air to the cathode of the fuel cell.

3. The method according to claim 1, characterized in that The fuel cell engine further comprises a hydrogen circulation subsystem and an air supply subsystem; the hydrogen circulation subsystem is used to supply hydrogen to the anode of the fuel cell; the air supply subsystem is used to supply air to the cathode of the fuel cell; The method of controlling the air at the cathode of the fuel cell to enter the anode of the fuel cell comprises: consuming the hydrogen in the pipeline of the hydrogen circulation subsystem; Maintaining air input to the cathode, heating the fuel cell, and obtaining a second hydrogen pressure of the fuel cell; The heating of the fuel cell is stopped according to the second hydrogen pressure.

4. The method according to claim 3, characterized in that The consuming of hydrogen in the pipeline of the hydrogen circulation subsystem comprises: Starting a hydrogen circulation pump in the hydrogen circulation subsystem; the hydrogen circulation pump is used to pump hydrogen in the pipeline of the hydrogen circulation subsystem into the anode; When the running time of the hydrogen circulation pump is greater than or equal to a preset second time period, shutting down the hydrogen circulation pump; and obtaining a first change trend of the first cell voltage of the fuel cell during the running of the hydrogen circulation pump; Controlling the air supply subsystem to supply air to the cathode of the fuel cell according to the first change trend; and obtaining a second change trend of the second cell voltage of the fuel cell during the process of supplying air; When the second change trend includes an upward trend, the hydrogen in the pipeline of the hydrogen circulation subsystem is consumed again; and / or, when the second change trend does not include an upward trend, it is determined that the consumption of hydrogen in the pipeline of the hydrogen circulation subsystem is completed.

5. The method according to claim 4, characterized in that The controlling the air supply subsystem to supply air to the cathode of the fuel cell according to the first change trend comprises: In a case where the first change trend does not include an upward trend, the air supply subsystem is controlled to supply air to the cathode.

6. The method according to claim 1, characterized in that The restarting of the fuel cell engine comprises: Acquiring the temperature of the fuel cell and the ambient temperature; When the temperature of the fuel cell is less than or equal to the ambient temperature, the fuel cell engine is controlled to start.

7. A device for testing the life of a fuel cell, characterized in that: The fuel cell is arranged in a fuel cell engine; the device comprises: a power boosting unit, configured to start the fuel cell engine and boost the actual operating power of the fuel cell engine to a preset target operating power; A power reduction unit is configured to reduce the actual operating power of the fuel cell engine to a preset idle power at intervals of a preset first time length; A response unit is configured to, in response to a preset shutdown instruction, stop supplying hydrogen to the fuel cell and maintain air supply to the fuel cell to consume the hydrogen in the fuel cell; then obtain a third hydrogen pressure of the fuel cell, stop air supply to the fuel cell according to the third hydrogen pressure, and shut down the fuel cell engine; A control unit configured to control the air at the cathode of the fuel cell to enter the anode of the fuel cell, so as to create a hydrogen-air interface at the anode of the fuel cell during the start-up process of the next start-stop operation; a restart unit configured to restart the fuel cell engine to perform the next start-stop operation until the number of start-stop operations is greater than or equal to a preset second cycle number; a detection module configured to detect the performance of the fuel cell when the number of the start-stop operations is greater than or equal to a preset first cycle number; The acquisition module is configured to acquire the test result of the fuel cell life according to the detection result.

8. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, enables the electronic device to implement the method for testing the life of a fuel cell as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: Computer readable instructions are stored thereon, and when the computer readable instructions are executed by a processor of a computer, the computer is caused to execute the method for testing the life of a fuel cell according to any one of claims 1 to 6.

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