Fuel cell engine with activation system and activation method thereof

Abstract

The invention relates to a fuel cell engine with an activation system and an activation method thereof. A hydrogen supply system is used for supplying hydrogen to the activation system when an activation instruction is received and a current activation type is a fault activation type; the oxygen supply system is used for supplying oxygen to the activation system when an activation instruction is received and the current activation type is a fault activation type; the thermal management system is used for heating the activation system when the current environment temperature is lower than the preset temperature; and the activation system is used for sequentially entering an anode humidification purging stage, an anode humidification hydrogen pressure maintaining stage, a cathode humidification purging stage and a standing operation stage until the fuel cell engine is started when an activation instruction is received and the current activation type is a fault activation type. Therefore, the problems that forced activation easily damages the cell, the activation efficiency is low, the cost is high and the user experience is influenced are solved, the activation of the fuel cell stack can be realized without disassembling and assembling the engine, the activation efficiency is high, and the activation cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly to a fuel cell engine with an activation system and an activation method thereof. Background Art

[0002] With the increasing global demand for energy, higher standards for the sustainability of energy use have been proposed. As a clean energy, hydrogen energy is regarded as a field with great development potential by many countries. In China, in order to achieve the goals of carbon peak and carbon neutrality, the application of proton exchange membrane fuel cell (PEMFC) vehicles is actively promoted in the fields of transportation and others. When generating electricity, PEMFC does not involve the combustion reaction of hydrogen and oxygen, and its only by-product is water, so it does not cause any pollution to the environment. In addition, PEMFC generates less noise during operation, which makes it a hot spot in the research of clean energy technology.

[0003] With the popularization and application scenario expansion of fuel cell vehicles, the vehicle's demand for power is increasing continuously, and the rated power of the fuel cell engine is also increasing accordingly. The original rated power of the engine was 80kW and 120kW, and now it has been increased to more than 240kW. The rated power of the fuel cell engines produced by some enterprises even reaches 300kW. This power increase has brought about an increase in the volume and weight of the engine, posing a challenge to the drying problem of the proton exchange membrane when the fuel cell vehicle is parked for a long time. Long-term parking will cause the proton exchange membrane to become thinner and softer, increasing the hydrogen permeability. If the fuel cell engine is started in this state, it may cause local overheating, affecting the service life of the fuel cell stack, and even burning through the proton exchange membrane in severe cases, leading to safety problems.

[0004] In the past, when the fuel cell vehicle was left idle for a long time and the proton exchange membrane was over-dried, resulting in the activation of the fuel cell stack, the solution was that when the fuel cell engine could not be started or operated normally, the manufacturer would remove the fuel cell stack or the engine assembly and transport it to the manufacturer. The manufacturer would use the corresponding activation equipment to activate it and then reinstall the fuel cell stack or the engine back to the whole vehicle. This forced activation method greatly reduced the engine life and health. Research shows that the fuel cell engine should be activated regularly. During the activation process, the oxidized platinum will be reduced to platinum. If the activation is carried out before a small amount of platinum oxide is formed, the activation efficiency will be greatly improved. The activation effect of the currently adopted forced activation technology will be reduced, and the oxidized platinum cannot be reduced to the maximum extent. In addition, due to the increasing power demand of fuel cell vehicles, the fuel cell engine will be larger in volume and heavier in weight. If the forced activation method is adopted, special sites and special equipment are required to remove the fuel cell stack or the engine for factory return activation. This method is time-consuming, laborious, and will increase the maintenance cost of the whole vehicle, affecting the user experience and possibly bringing economic losses to the user. Summary of the Invention

[0005] The present application provides a fuel cell engine with an activation system and an activation method thereof, so as to solve the problems that forced activation is likely to damage the battery, the activation efficiency is low, the cost is high, and the user experience is affected. The present application can realize the activation of the fuel cell stack without disassembling and assembling the engine, with high activation efficiency and low activation cost.

[0006] The first aspect embodiment of the present application provides a fuel cell engine with an activation system, including: a hydrogen supply system, an oxygen supply system, a thermal management system, an activation system, and an electric stack. Among them,

[0007] The hydrogen supply system is used to supply hydrogen to the activation system when receiving an activation instruction and the current activation type is a fault activation type;

[0008] The oxygen supply system is used to supply oxygen to the activation system when receiving an activation instruction and the current activation type is the fault activation type;

[0009] The thermal management system is used to heat the activation system when the current ambient temperature is lower than a preset temperature;

[0010] The activation system is used to sequentially enter an anode humidification purge stage, an anode humidification hydrogen pressure holding stage, a cathode humidification purge stage, and a static operation stage when receiving an activation instruction and the current activation type is the fault activation type, until the fuel cell engine starts.

[0011] Optionally, in some embodiments, the activation system includes: a water tank, a deionization component, a pressurization component, a heat exchange component, a first temperature sensing component, a three-way valve, which are connected in sequence, and a first spray head, a second spray head, a first one-way valve, a first stop valve, a second stop valve, a gas humidification assembly, a second one-way valve, a third one-way valve, and a first thermostat. Among them,

[0012] The input end of the three-way valve is connected to the first temperature sensing component, the first output end of the three-way valve is connected to one end of the first spray head, and the second output end of the three-way valve is connected to one end of the second spray head;

[0013] The other end of the first spray head is connected to one end of the second stop valve, and the other end of the second stop valve is connected to the first input end of the gas humidification assembly;

[0014] The other end of the second spray head is connected to one end of the first one-way valve, and the other end of the first one-way valve is connected to the second input end of the gas humidification assembly;

[0015] One end of the first shut-off valve is connected to the hydrogen supply output end of the hydrogen supply system, and the other end of the first shut-off valve is connected to the third input end of the gas humidification assembly;

[0016] The first output end of the gas humidification assembly is connected to the anode input end of the fuel cell stack through the second one-way valve, and the second output end of the gas humidification assembly is connected to the cathode input end of the fuel cell stack through the third one-way valve;

[0017] The heat exchange component is respectively connected to the pressurizing component, the thermal management system and the hydrogen supply system.

[0018] Optionally, in some embodiments, the hydrogen supply system includes: a hydrogen supply component, a first switch component, a hydrogen-gas heat exchanger, a proportional valve, a hydrogen-gas shut-off valve, an ejector and a hydrogen pressure sensing component, wherein,

[0019] One end of the first switch component is connected to the output end of the hydrogen supply component;

[0020] The first input end of the hydrogen-gas heat exchanger is connected to the other end of the first switch component, the first output end of the hydrogen-gas heat exchanger is connected to the input end of the proportional valve, the second input end of the hydrogen-gas heat exchanger is connected to the thermal management component, and the second output end of the hydrogen-gas heat exchanger is connected to the thermal management component;

[0021] The first output end of the proportional valve is connected to one end of the hydrogen-gas shut-off valve, and the second output end of the proportional valve is connected to one end of the first shut-off valve;

[0022] The input end of the ejector is connected to the other end of the first shut-off valve, and the output end of the ejector is connected to the anode input end of the fuel cell stack;

[0023] The hydrogen pressure sensing component is arranged between the output end of the ejector and the anode input end of the fuel cell stack.

[0024] Optionally, in some embodiments, the oxygen supply system includes: an air filter, an air compressor, an air pressure sensing component, a first air temperature sensing component, an intercooler, a second air temperature sensing component, a bypass valve, a third shut-off valve, wherein,

[0025] One ends of the air filter, the air compressor, the air pressure sensing component, the first air temperature sensing component, the intercooler and the second air temperature sensing component are connected in sequence;

[0026] The input end of the bypass valve is connected to the other end of the second air temperature sensing component, the first output end of the bypass valve is connected to one end of the third shut-off valve, and the second output end of the bypass valve is connected to the first input end of the gas humidification assembly;

[0027] The other end of the third cut-off valve is connected to the cathode input end of the stack.

[0028] Optionally, in some embodiments, the thermal management system includes: a heat dissipation component, a second temperature sensing component, a third temperature sensing component, a heating component, a second thermostat, and a water pump, where

[0029] The output end of the heat dissipation component is connected to the input end of the water pump;

[0030] The output end of the water pump is connected to the cathode input end of the stack;

[0031] The input end of the second thermostat is respectively connected to the input end of the first thermostat and the cathode output end of the stack. The first output end of the second thermostat is connected to the input end of the heat dissipation component, and the second output end of the second thermostat is connected to one end of the heat dissipation component;

[0032] The other end of the heat dissipation component is connected to the input end of the water pump;

[0033] The second temperature sensing component is arranged directly between the output end of the heat dissipation component and the input end of the water pump;

[0034] The third temperature sensing component is arranged between the first output end of the second thermostat and the input end of the heat dissipation component.

[0035] The second aspect embodiment of the present application provides an activation method for a fuel cell engine, which uses the fuel cell engine with an activation system as described above. Among them, the method includes the following steps:

[0036] Judge whether a confirmation activation instruction is received;

[0037] If the confirmation activation instruction is received, determine the current activation type based on the confirmation activation instruction;

[0038] If the current activation type is a fault activation type, control the activation system to sequentially enter the anode humidification purge stage, the anode humidification hydrogen pressure holding stage, the cathode humidification purge stage, and the static operation stage until the fuel cell engine starts.

[0039] Optionally, in some embodiments, the controlling the activation system to sequentially enter the anode humidification purge stage, the anode humidification hydrogen pressure holding stage, the cathode humidification purge stage, and the static operation stage includes:

[0040] Judge whether the liquid level of the water tank is greater than the preset liquid level;

[0041] If the liquid level of the water tank is greater than the preset liquid level, close the hydrogen cut-off valve, open the first cut-off valve and the first switch assembly, adjust the three-way valve to conduct the second spray head and the heat exchange element, mix hydrogen with atomized deionized water generated by the second spray head for humidification, and then enter the anodic input end of the fuel cell stack through the second one-way valve for pulsed humidification purge. When the purge meets the first preset condition, adjust the three-way valve to conduct the third spray head and the heat exchange element;

[0042] Close the third cut-off valve, adjust the back pressure valve opening of the fuel cell engine to the first preset opening, open the second cut-off valve, mix oxygen with atomized deionized water generated by the first spray head for humidification, and then enter the cathodic input end of the fuel cell stack through the third one-way valve for cathodic humidification purge. When the purge meets the second preset condition, determine that the anodic humidification hydrogen pressure holding stage is completed, and adjust the back pressure valve opening of the fuel cell engine to the second preset opening;

[0043] After controlling the fuel cell engine to stand still for the first preset time period, control the fuel cell engine to start.

[0044] Optionally, in some embodiments, after determining the current activation type based on the confirmation activation instruction, it further includes:

[0045] If the current activation type is a regular reservation activation type, adjust the hydrogen supply system to operate at a first hydrogen metering ratio, and control the fuel cell engine to load to a first target power and operate for a second preset time period;

[0046] Based on a preset load reduction strategy, control the fuel cell engine to unload and shut down, and adjust the hydrogen supply system from the first hydrogen metering ratio to a preset hydrogen metering ratio.

[0047] Optionally, in some embodiments, after determining the current activation type based on the confirmation activation instruction, it further includes:

[0048] If the current activation type is an online activation type, when the battery SOC is within a preset range, adjust the hydrogen supply system to operate at a second hydrogen metering ratio, and control the fuel cell engine to operate for a third preset time period.

[0049] Optionally, in some embodiments, the determining whether to receive a confirmation activation instruction includes:

[0050] Determine whether an on-power instruction is received;

[0051] If the on-power instruction is received, obtain the duration since the last power-off;

[0052] If the duration is greater than a fourth preset duration and the fuel cell engine is in a preset fault state, send a first activation requirement to a preset mobile terminal, and when a confirmation activation instruction sent by the user based on the first activation requirement is received, determine that the confirmation activation instruction is received;

[0053] In addition, if the duration is less than or equal to the fourth preset duration, when the operating duration of the fuel cell engine is greater than a fifth preset duration, send a second activation requirement to the preset mobile terminal, and when a confirmation activation instruction sent by the user based on the second activation requirement is received, determine that the confirmation activation instruction is received; and when the operating duration of the fuel cell engine is less than the fifth preset duration and the operating duration of the fuel cell engine is greater than or equal to a sixth preset duration, send a third activation requirement to the preset mobile terminal, and when a confirmation activation instruction sent by the user based on the third activation requirement is received, determine that the confirmation activation instruction is received.

[0054] Thus, when the activation instruction is received and the current activation type is a fault activation type, hydrogen is supplied to the activation system through the hydrogen supply system, oxygen is supplied to the activation system through the oxygen supply system when the activation instruction is received and the current activation type is a fault activation type, and when the current ambient temperature is lower than a preset temperature, heat is supplied to the activation system by the thermal management system; the activation system is configured to sequentially enter an anode humidification purge stage, an anode humidification hydrogen pressure holding stage, a cathode humidification purge stage, and a static operation stage until the fuel cell engine starts when the activation instruction is received and the current activation type is a fault activation type. Thus, the problems that forced activation is likely to damage the battery, the activation efficiency is low, the cost is high, and the user experience is affected are solved. In this application, the activation of the fuel cell stack can be realized without disassembling and assembling the engine, the activation efficiency is high, and the activation cost is low.

[0055] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0056] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings, in which:

[0057] Figure 1 is a schematic diagram of a fuel cell engine with an activation system according to an embodiment of the present application;

[0058] Figure 2 is a flowchart of an activation method for a fuel cell engine according to an embodiment of the present application;

[0059] FIG. 3 is a schematic diagram of the principle of the activation method of a fuel cell engine provided according to an embodiment of the present application. Among them, FIG. 3(a) is a schematic diagram of the principle of the activation method of the fuel cell engine, and FIG. 3(b) is an explanatory schematic diagram of FIG. 3(a);

[0060] Figure 4 FIG. 4 is a schematic diagram of the principle of the activation method of a fuel cell engine provided according to another embodiment of the present application,

[0061] Figure 5 FIG. 5 is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. Detailed Description of the Embodiment

[0062] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0063] A fuel cell engine with an activation system and its activation method according to an embodiment of the present application will be described below with reference to the accompanying drawings. In view of the problems mentioned in the above background art that forced activation is likely to damage the battery, the activation efficiency is low, the cost is high, and the user experience is affected, the present application provides a fuel cell engine with an activation system. In this method, when the activation instruction is received and the current activation type is a fault activation type, hydrogen is supplied to the activation system by the hydrogen supply system, oxygen is supplied to the activation system by the oxygen supply system when the activation instruction is received and the current activation type is a fault activation type, and when the current ambient temperature is lower than the preset temperature, the activation system is heated by the thermal management system; the activation system is configured to sequentially enter the anode humidification purge stage, the anode humidification hydrogen pressure holding stage, the cathode humidification purge stage, and the static operation stage until the fuel cell engine starts when the activation instruction is received and the current activation type is a fault activation type. Thus, the problems that forced activation is likely to damage the battery, the activation efficiency is low, the cost is high, and the user experience is affected are solved. The present application can activate the fuel cell stack without disassembling and assembling the engine, with high activation efficiency and low activation cost.

[0064] Specifically, Figure 1 FIG. 6 is a schematic diagram of a fuel cell engine with an activation system provided according to an embodiment of the present application.

[0065] As Figure 1 shown, the fuel cell 10 with an activation system includes: a hydrogen supply system 100, an oxygen supply system 200, a thermal management system 300, an activation system 400, and a fuel cell stack 500.

[0066] Among them, the hydrogen supply system 100 is used to supply hydrogen to the activation system when receiving an activation instruction and the current activation type is a fault activation type; the oxygen supply system 200 is used to supply oxygen to the activation system when receiving an activation instruction and the current activation type is a fault activation type; the thermal management system 300 is used to heat the activation system when the current ambient temperature is lower than a preset temperature; the activation system 400 is used to sequentially enter the anode humidification purge stage, the anode humidification hydrogen pressure holding stage, the cathode humidification purge stage, and the static operation stage until the fuel cell engine starts when receiving an activation instruction and the current activation type is a fault activation type.

[0067] Among them, the preset temperature can be preset by the user, obtained through a limited number of experiments, or obtained through a limited number of computer simulations, and is not specifically limited here.

[0068] It should be noted that in the embodiments of the present application, the current activation types include fault activation, regular reservation activation, and online activation. Among them, fault activation means that the fuel cell engine of the fuel cell vehicle cannot start due to the proton exchange membrane being overly dry after long-term parking; regular activation means that after the fuel cell engine has been running for a period of time, some platinum (Pt) will be oxidized, resulting in a decrease in the output power of the fuel cell stack and a reduction in the service life of the fuel cell stack. In this case, the fuel cell stack needs to be operated with insufficient hydrogen to reduce the oxidized platinum (Pt) back to platinum (Pt) to restore the fuel cell stack to the optimal state; online activation means that although the operating power of the fuel cell engine does not change significantly after running for a period of time, a small amount of platinum (Pt) will still be oxidized, which will still affect the service life of the fuel cell stack. Therefore, after the fuel cell engine has been running for a period of time, such as 700 h, short-term under-hydrogen activation of the fuel cell stack can further improve the service life of the fuel cell stack.

[0069] Specifically, the hydrogen supply system 100 can supply hydrogen to the activation system 400. In the case of a fault activation type, the system requires additional hydrogen to support the activation process. The hydrogen supply system provides hydrogen conditions for fault activation by adjusting the hydrogen flow rate and pressure. The oxygen supply system 200 can supply oxygen to the activation system 400. In the case of a fault activation type, the activation system 400 requires oxygen to support the electrochemical reaction; the thermal management system 300 is used to monitor the current ambient temperature. If the ambient temperature is lower than the preset temperature, the thermal management system 300 will heat the activation system 400 to ensure that the fuel cell engine can work at an appropriate temperature. After receiving the activation instruction, the activation system 400 enters the following stages: the anode humidification purge stage, the anode humidification hydrogen pressure holding stage, the cathode humidification purge stage, and the static operation stage until the fuel cell engine starts.

[0070] Optionally, combined with Figure 1As shown, in some embodiments, the activation system 400 includes: a water tank 401, a deionization component 402, a pressurization component 403, a heat exchange component 404, a first temperature sensing component 405, a three-way valve 406, as well as a first spray head 407, a second spray head 408, a first one-way valve 409, a first stop valve 410, a second stop valve 411, a gas humidification assembly 412, a second one-way valve 413, a third one-way valve 414, and a first thermostat 415, which are connected in sequence.

[0071] Among them, the input end of the three-way valve 406 is connected to the first temperature sensing component 405, the first output end of the three-way valve 406 is connected to one end of the first spray head 407, and the second output end of the three-way valve 406 is connected to one end of the second spray head 408; the other end of the first spray head 407 is connected to one end of the second stop valve 411, and the other end of the second stop valve 411 is connected to the first input end of the gas humidification assembly 412; the other end of the second spray head 408 is connected to one end of the first one-way valve 409, and the other end of the first one-way valve 409 is connected to the second input end of the gas humidification assembly 412; one end of the first stop valve 410 is connected to the hydrogen supply output end of the hydrogen supply system 100, and the other end of the first stop valve 410 is connected to the third input end of the gas humidification assembly 412; the first output end of the gas humidification assembly 412 is connected to the anode input end of the fuel cell stack through the second one-way valve 413, and the second output end of the gas humidification assembly 412 is connected to the cathode input end of the fuel cell stack 500 through the third one-way valve 414; the heat exchange component 404 is respectively connected to the pressurization component 403, the thermal management system 300, and the hydrogen supply system 100.

[0072] Optionally, in combination Figure 1 As shown, in some embodiments, the hydrogen supply system 10 includes: a hydrogen supply component 101, a first switch component 102, a hydrogen-hydrogen plate heat exchanger 103, a proportional valve 104, a hydrogen stop valve 105, an ejector 106, and a hydrogen pressure sensing component 107.

[0073] Among them, one end of the first switch component 102 is connected to the output end of the hydrogen supply component 101; the first input end of the hydrogen-hydrogen plate heat exchanger 103 is connected to the other end of the first switch component 102, the first output end of the hydrogen-hydrogen plate heat exchanger 103 is connected to the input end of the proportional valve 104, the second input end of the hydrogen-hydrogen plate heat exchanger 103 is connected to the thermal management component, and the second output end of the hydrogen-hydrogen plate heat exchanger 103 is connected to the thermal management component; the first output end of the proportional valve 104 is connected to one end of the hydrogen stop valve 105, and the second output end of the proportional valve 104 is connected to one end of the first stop valve 410; the input end of the ejector 106 is connected to the other end of the first stop valve 410, and the output end of the ejector 106 is connected to the anode input end of the fuel cell stack 500; the hydrogen pressure sensing component 107 is arranged between the output end of the ejector 106 and the anode input end of the fuel cell stack 500.

[0074] Optionally, in combination with Figure 1 As shown, in some embodiments, the oxygen supply system 200 includes: an air filter 201, an air compressor 202, an air pressure sensor 203, a first air temperature sensor 204, an intercooler 205, a second air temperature sensor 206, a bypass valve 207, and a third cut-off valve 208.

[0075] Among them, one ends of the air filter 201, the air compressor 202, the air pressure sensor 203, the first air temperature sensor 204, the intercooler 205, and the second air temperature sensor 206 are connected in sequence; the input end of the bypass valve 207 is connected to the other end of the second air temperature sensor 206, the first output end of the bypass valve 207 is connected to one end of the third cut-off valve 208, and the second output end of the bypass valve 207 is connected to the first input end of the gas humidification assembly 412; the other end of the third cut-off valve 208 is connected to the cathode input end of the fuel cell stack 500.

[0076] Optionally, in combination with Figure 1 As shown, in some embodiments, the thermal management system 300 includes: a heat dissipation component 301, a second temperature sensor 302, a third temperature sensor 303, a heating component 304, a second thermostat 305, and a water pump 306.

[0077] Among them, the output end of the heat dissipation component 301 is connected to the input end of the water pump 306; the output end of the water pump 306 is connected to the cathode input end of the fuel cell stack 500; the input end of the second thermostat 305 is respectively connected to the input end of the first thermostat 415 and the cathode output end of the fuel cell stack 500, the first output end of the second thermostat 305 is connected to the input end of the heat dissipation component 301, and the second output end of the second thermostat 305 is connected to one end of the heat dissipation component 301; the other end of the heat dissipation component 301 is connected to the input end of the water pump 306; the second temperature sensor 302 is disposed directly between the output end of the heat dissipation component 301 and the input end of the water pump 306; the third temperature sensor 303 is disposed between the first output end of the second thermostat 305 and the input end of the heat dissipation component 301.

[0078] Here, the working principle of the fuel cell engine with an activation system is described.

[0079] During the actual execution process, when the driver confirms the forced activation command on the instrument panel, the anode humidification purge and humidification pressure retention functions of the fuel cell stack are activated. The VCU confirms whether the water tank 401 has a normal liquid level. If the liquid level is low, the driver needs to add deionized water. If the liquid level is normal, the hydrogen cut-off valve 105 is closed, the first cut-off valve 410 is opened, and the three-way valve 406 is switched to the hydrogen pipeline. At this time, the first switch assembly 102 of the hydrogen supply system 100 is opened, the hydrogen plate heat exchanger 103 and the proportional valve 104 are opened, and while hydrogen enters, the pressurizing component 403 starts to operate, and the deionized water is pressurized by the pressurizing component 403.

[0080] If the ambient temperature is in a low-temperature state, the first thermostat 415 opens. After the pressurized deionized water is heated by the heat exchange component 404 (the heat of the heat exchanger comes from the fuel cell engine cooling module, and the PTC will be heated when the engine starts in a low-temperature environment), it enters the second spray head 408 through the three-way valve 406. The atomized deionized water is mixed and humidified with hydrogen in the gas humidification assembly 412 and then enters the stack 500 through the third one-way valve 414 for pulsed humidification purge. The purge time is 2 seconds, and the interval time is 1 second (at least 10 purges). After the purge is completed, the humidified hydrogen continues to be supplied. When the pressure of the hydrogen pressure sensor 107 is greater than 150 kPa, the first shut-off valve 410 is closed and the pressurizing component 403 stops working. The three-way valve 406 is adjusted to the cathode pipeline of the fuel cell stack.

[0081] When the anode of the stack enters the hydrogen humidification and pressure-holding state, the third shut-off valve 208 is closed, the back pressure valve of the fuel cell engine is adjusted to an opening of 100%, it is confirmed that the direction of the three-way valve 406 is in the direction of the cathode pipeline of the fuel cell stack, the second shut-off valve 411 is opened, the FCCU sends an air compressor operation command, the air compressor runs and the pressurizing component 403 starts to work, and the deionizing component 402 (deionizer) removes ions. At this time, the air passes through the intercooler and the bypass valve and enters the gas humidification assembly 412. At the same time, the pressurized deionized water is first heated by the heat exchange component 404 (the heat of the heat exchanger comes from the fuel cell engine cooling module, and the PTC will be heated when the engine starts in a low-temperature environment), and enters the first spray head 407 through the three-way valve 406. The atomized deionized water enters the gas humidification assembly 412. (If the ambient temperature is in a low-temperature state, the first thermostat 415 opens, and the deionized water enters the gas humidification assembly 412 after being heated by the heat exchange component 404). The air and the atomized deionized water are mixed and humidified in the gas humidification assembly 412 and then enter the stack through the second one-way valve 413 for cathode humidification purge. The purge time is at least 3 min. When the hydrogen pressure of the hydrogen pressure sensor 107 is less than or equal to the current atmospheric pressure, the second shut-off valve 411 and the back pressure valve of the fuel cell engine are closed and the air compressor stops working at the same time, and the cathode humidification purge of the fuel cell stack ends. When the hydrogen pressure at the anode of the stack is less than or equal to the current atmospheric pressure and after the cathode humidification purge ends, the fuel cell engine stands still in this state for at least 15 min, and then the fuel cell engine starts normally.

[0082] It should be noted that if the fuel cell engine fails to start, repeat the above actions until the fuel cell engine starts and enters the idle state. After entering the idle state, the FCCU performs self-power loading according to the current fuel cell stack voltage, impedance and other information. After loading to the rated power and running stably for 1 h, the engine unloads and shuts down, and the activation device ends its operation.

[0083] According to the fuel cell engine with an activation system proposed in the embodiments of the present application, the hydrogen supply system supplies hydrogen to the activation system when receiving an activation instruction and the current activation type is a fault activation type, the oxygen supply system supplies oxygen to the activation system when receiving an activation instruction and the current activation type is a fault activation type, and the thermal management system heats the activation system when the current ambient temperature is lower than a preset temperature; the activation system is used to sequentially enter the anode humidification purge stage, the anode humidification hydrogen pressure holding stage, the cathode humidification purge stage, and the static operation stage until the fuel cell engine starts when receiving an activation instruction and the current activation type is a fault activation type. Thus, the problems that forced activation is likely to damage the battery, the activation efficiency is low, the cost is high, and the user experience is affected are solved. The present application can activate the fuel cell stack without disassembling and assembling the engine, with high activation efficiency and low activation cost.

[0084] Next, a method for activating a fuel cell engine proposed in the embodiments of the present application will be described with reference to the accompanying drawings.

[0085] The method for activating the fuel cell engine in the embodiments of the present application uses the above-mentioned fuel cell engine with an activation system, as Figure 2 shown. The method for activating the fuel cell engine includes the following steps:

[0086] In step S201, it is judged whether a confirmation activation instruction is received.

[0087] Optionally, in some embodiments, judging whether a confirmation activation instruction is received includes: judging whether a power-on instruction is received; if a power-on instruction is received, obtaining the duration since the last power-off; if the duration is greater than a fourth preset duration and the fuel cell engine is in a preset fault state, sending a first activation requirement to a preset mobile terminal, and judging that a confirmation activation instruction is received when receiving a confirmation activation instruction sent by the user based on the first activation requirement; and, if the duration is less than or equal to the fourth preset duration, sending a second activation requirement to the preset mobile terminal when the running duration of the fuel cell engine is greater than a fifth preset duration, and judging that a confirmation activation instruction is received when receiving a confirmation activation instruction sent by the user based on the second activation requirement; and sending a third activation requirement to the preset mobile terminal when the running duration of the fuel cell engine is less than the fifth preset duration and the running duration of the fuel cell engine is greater than or equal to a sixth preset duration, and judging that a confirmation activation instruction is received when receiving a confirmation activation instruction sent by the user based on the third activation requirement.

[0088] Among them, the first activation requirement is a fault activation requirement, the second activation requirement is a regular activation requirement, and the third activation requirement is an online activation requirement.

[0089] The preset fault state may be an engine fault. For example, the engine fails to start. The preset mobile terminal may be a vehicle-mounted terminal, a mobile phone, a computer, etc. The fourth preset duration, the fifth preset duration, and the sixth preset duration may be preset by the user, obtained through a limited number of experiments, or obtained through a limited number of computer simulations. Specific limitations are not provided here.

[0090] The embodiments of the present application can determine whether to send an activation requirement based on time and the engine state, and wait for the user's confirmation instruction to perform the activation operation, ensuring that the fuel cell engine can be properly maintained and activated under different conditions to maintain its performance and extend its service life.

[0091] Specifically, as shown in FIGS. 3 and 4, when the vehicle is powered on, the VCU determines that the vehicle has been parked for a long time. At this time, if the fuel cell engine fails to start after the VCU instrument prompts the activation requirement, the VCU reads the current vehicle state while the BMS adjusts the SOC. After the VCU completes reading the vehicle state, it enters the forced activation mode. The FCCU enters the forced activation preparation state and the instrument prompts the user to turn on one-key activation. When the user confirms the activation instruction, it is determined that the confirmation activation instruction has been received.

[0092] Regular activation means that after the fuel cell engine runs for a period of time, some platinum (Pt) will be oxidized, resulting in a decrease in the output power of the fuel cell stack and a reduction in the service life of the fuel cell stack. In this case, it is necessary to perform under-hydrogen operation on the fuel cell stack to reduce the oxidized platinum (Pt) back to platinum (Pt) to restore the fuel cell stack to the optimal state. When the vehicle is powered on, the VCU determines that the vehicle is not in a long-term parking state and the running time of the fuel cell engine has reached 2000h. The instrument prompts the driver that regular activation is required. When the SOC is between 30% and 50%, the driver is prompted to turn on one-key activation. After the driver turns on one-key activation, the FCCU adjusts the hydrogen metering ratio and sends a fuel cell engine operation instruction. After the fuel cell engine runs, it automatically loads the operating power according to the power consumption of the vehicle and information such as the voltage and impedance of the fuel cell stack. After loading to the rated power and running for 1h, the fuel cell engine unloads and shuts down, and the FCCU restores the hydrogen metering ratio. After the regular activation is completed, it reports to the VCU.

[0093] Online activation means that although the operating power of the fuel cell engine does not change significantly after running for a period of time, a small part of platinum (Pt) will still be oxidized, which will still affect the service life of the fuel cell stack. Therefore, after the fuel cell engine runs for 700h, short-term under-hydrogen activation of the fuel cell stack can further improve the service life of the fuel cell stack. After the fuel cell engine runs for 700h, the VCU instrument prompts the driver for the online activation requirement. After the driver turns on the reserved activation through the instrument, when the SOC is between 30% and 50%, the fuel cell engine can be started without stopping to adjust the hydrogen metering ratio by the FCCU. The fuel cell engine can complete the online activation by running at any power for 10 minutes, and report to the VCU after the activation is completed.

[0094] In step S202, if a confirmation activation instruction is received, the current activation type is determined based on the confirmation activation instruction.

[0095] Among them, the current activation types include: fault activation type, regular reservation activation type, and online activation type.

[0096] Specifically, fault activation type: If the confirmation activation instruction is triggered because of a fault or performance degradation of the fuel cell engine, then the current activation type is determined to be the fault activation type. This type of activation usually requires emergency treatment to restore the normal operation of the engine; regular reservation activation type: If the confirmation activation instruction is triggered based on the regular activation requirement, then the current activation type is determined to be the regular reservation activation type. This type of activation is to prevent potential problems and maintain the best performance of the engine; online activation type: If the confirmation activation instruction is triggered based on the online activation requirement, then the current activation type is determined to be the online activation type.

[0097] In step S303, if the current activation type is the fault activation type, control the activation system to enter the anode humidification purge stage, anode humidification hydrogen pressure holding stage, cathode humidification purge stage, and static operation stage in sequence until the fuel cell engine starts.

[0098] Specifically, as shown in Figures 3 and 4, when the current activation type is the fault activation type, the FCCU enters the forced activation preparation state and the instrument prompts the driver to turn on one-key activation. After the driver activates it with one key, the fuel cell engine performs anode humidification blowing, anode humidification hydrogen pressure holding, cathode humidification purge, and static operation. After completing the above operations, the FCCU sends a fuel cell engine operation instruction. If the engine cannot start, repeat the anode humidification blowing, anode humidification hydrogen pressure holding, cathode humidification purge, and static operation until the fuel cell engine starts. After the fuel cell engine enters the idle power operation, the FCCU loads the power by itself according to the current fuel cell stack voltage, impedance and other information until it is loaded to the rated power and runs for 60 minutes, then the forced activation is completed and reported to the VCU.

[0099] It should be noted that if the fuel cell engine can operate with power limitation after the vehicle is powered on, the anode humidification blowing, anode humidification hydrogen pressure maintaining, cathode humidification purging, and static operation are omitted.

[0100] Optionally, in some embodiments, controlling the activation system to sequentially enter the anode humidification purging stage, anode humidification hydrogen pressure maintaining stage, cathode humidification purging stage, and static operation stage, includes: judging whether the liquid level of the water tank is greater than a preset liquid level; if the liquid level of the water tank is greater than the preset liquid level, closing the hydrogen cut-off valve, opening the first cut-off valve and the first switch assembly, adjusting the three-way valve to conduct the second spray head and the heat exchange element, mixing hydrogen and atomized deionized water generated by the second spray head for humidification, and then entering the anode input end of the fuel cell stack through the second one-way valve for pulsed humidification purging, and when the purging meets the first preset condition, adjusting the three-way valve to conduct the third spray head and the heat exchange element; closing the third cut-off valve, adjusting the back pressure valve opening of the fuel cell engine to the first preset opening, opening the second cut-off valve, mixing oxygen and atomized deionized water generated by the first spray head for humidification, and then entering the cathode input end of the fuel cell stack through the third one-way valve for cathode humidification purging, and when the purging meets the second preset condition, determining that the anode humidification hydrogen pressure maintaining stage is completed, and adjusting the back pressure valve opening of the fuel cell engine to the second preset opening; controlling the fuel cell engine to be static for the first preset duration, and then controlling the fuel cell engine to start.

[0101] Among them, the preset liquid level and the first preset duration can be preset by the user, can be obtained through a limited number of experiments, or can be obtained through a limited number of computer simulations, and are not specifically limited herein. The first preset opening is 100% opening, the second preset opening is closed, the first preset condition can be that the purging time is 2 seconds, the interval time is 1 second and at least 10 purgings are performed, and the second preset condition can be that the purging time is at least 3 minutes.

[0102] Specifically, as shown in FIGS. 3 and 4, after the driver confirms the forced activation instruction on the instrument panel, the anode humidification purge and humidification pressure holding functions of the fuel cell stack are turned on. It is determined whether the liquid level in the water tank is greater than the preset liquid level to judge whether the liquid level is normal. If the liquid level is low, the user needs to add water. If the liquid level is normal, the hydrogen cut-off valve is closed, the first cut-off valve and the first switch assembly are opened, and the three-way valve is adjusted so that the second spray head and the heat exchange element are conducted. The hydrogen pipeline is switched, and hydrogen is mixed and humidified with the atomized deionized water generated through the second spray head and then enters the anode input end of the fuel cell stack through the second one-way valve for pulsed humidification purge. When the purge meets the first preset condition, the three-way valve is adjusted so that the third spray head and the heat exchange element are conducted, and it is adjusted to the cathode pipeline of the fuel cell stack; the third cut-off valve is closed, the back pressure valve opening of the fuel cell engine is adjusted to the first preset opening, the second cut-off valve is opened, and oxygen is mixed and humidified with the atomized deionized water generated through the first spray head and then enters the cathode input end of the fuel cell stack through the third one-way valve for cathode humidification purge. When the purge meets the second preset condition, it is determined that the anode humidification hydrogen pressure holding stage is completed, and the back pressure valve of the fuel cell engine is closed; after controlling the fuel cell engine to stand still for the first preset duration, the fuel cell engine is controlled to start.

[0103] It should be noted that if the fuel cell engine fails to start, the above actions are repeated until the fuel cell engine starts and enters the idle state. After entering the idle state, the FCCU automatically performs power loading according to information such as the current fuel cell stack voltage and impedance. After loading to the rated power and operating stably for 1 h, the engine unloads and shuts down, and the activation device ends its operation.

[0104] Optionally, in some embodiments, after determining the current activation type based on the confirmed activation instruction, it further includes: if the current activation type is the regular reservation activation type, adjusting the hydrogen supply system to operate at the first hydrogen metering ratio, and controlling the fuel cell engine to load to the first target power and operate for the second preset duration; based on the preset unloading strategy, controlling the fuel cell engine to unload and shut down, and adjusting the hydrogen supply system from the first hydrogen metering ratio to the preset hydrogen metering ratio.

[0105] Preferably, the second preset duration is 1 h.

[0106] Specifically, as shown in FIGS. 3 and 4, when the current activation type is the regular reservation activation type, it is necessary to operate the fuel cell stack with insufficient hydrogen to reduce the oxidized platinum (Pt) to platinum (Pt) to restore the fuel cell stack to the optimal state. When the vehicle is powered on, the VCU determines that the vehicle is not in long-term parking and the running time of the fuel cell engine has reached 2000 h. The instrument prompts the driver that regular activation is required. When the SOC is between 30% and 50%, the driver is prompted to turn on one-key activation. After the driver turns on one-key activation, the FCCU adjusts the hydrogen metering ratio and sends a fuel cell engine operation command. After the fuel cell engine runs, it automatically loads the operating power according to the power consumption of the vehicle and information such as the voltage and impedance of the fuel cell stack. After loading to the rated power and running for 1 h, the fuel cell engine unloads and shuts down, and the FCCU restores the hydrogen metering ratio. After the regular activation is completed, it reports to the VCU.

[0107] Optionally, in some embodiments, after determining the current activation type based on the confirmation activation instruction, it further includes: if the current activation type is the online activation type, when the battery SOC is within a preset range, adjust the hydrogen supply system to operate at a second hydrogen metering ratio, and control the fuel cell engine to run for a third preset duration.

[0108] Specifically, when the current activation type is the online activation type, for example, short-term insufficient hydrogen activation of the fuel cell stack after the fuel cell engine has run for 700 h can further improve the service life of the fuel cell stack. After the fuel cell engine has run for 700 h, the VCU instrument prompts the driver of the online activation requirement. After the driver turns on the reservation activation through the instrument, when the SOC is between 30% and 50%, there is no need to stop the vehicle. After the FCCU adjusts the hydrogen metering ratio, it starts the fuel cell engine. The fuel cell engine can complete the online activation by running at any power for 10 min. After the activation is completed, it reports to the VCU.

[0109] It should be noted that the foregoing explanation of the embodiments of the fuel cell engine with an activation system also applies to the activation method of the fuel cell engine in this embodiment, and will not be elaborated here.

[0110] According to the activation method of the fuel cell engine proposed in the embodiments of the present application, by determining whether a confirmation activation instruction is received, if a confirmation activation instruction is received, the current activation type is determined based on the confirmation activation instruction. If the current activation type is the fault activation type, control the activation system to sequentially enter the anode humidification purge stage, the anode humidification hydrogen pressure holding stage, the cathode humidification purge stage, and the static operation stage until the fuel cell engine starts. Thus, the problems that forced activation is likely to damage the battery, the activation efficiency is low, the cost is high, and the user experience is affected are solved. The present application can achieve the activation of the fuel cell stack without disassembling and assembling the engine, with high activation efficiency and low activation cost.

[0111] Figure 5 This is a schematic structural diagram of the electronic device provided by the embodiment of the present application. The electronic device may include:

[0112] A memory 501, a processor 502, and a computer program stored on the memory 501 and executable on the processor 502.

[0113] When the processor 502 executes the program, it implements the activation method of the fuel cell engine provided in the above embodiment.

[0114] Furthermore, the electronic device further includes:

[0115] A communication interface 503 for communication between the memory 501 and the processor 502.

[0116] The memory 501 is used to store a computer program executable on the processor 502.

[0117] The memory 501 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0118] If the memory 501, the processor 502, and the communication interface 503 are implemented independently, the communication interface 503, the memory 501, and the processor 502 may be interconnected through a bus and communicate with each other. The bus may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 5 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0119] Optionally, in a specific implementation, if the memory 501, the processor 502, and the communication interface 503 are integrated on a chip, the memory 501, the processor 502, and the communication interface 503 may communicate with each other through an internal interface.

[0120] The processor 502 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0121] An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the activation method of the fuel cell engine as described above is implemented.

[0122] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0123] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0124] Any process or method description shown in the flowchart or described in other ways herein can be understood to represent a module, segment, or part of code including one or more executable instructions for implementing a customized logic function or process, and the scope of the preferred embodiments of the present application includes additional implementations, where the functions may be executed in a manner not shown or discussed, including in a substantially simultaneous manner according to the involved functions or in a reverse order, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0125] It should be understood that each part of the present application can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one of the following techniques well known in the art or a combination of them can be used: discrete logic circuits with logic gate circuits for implementing logic functions on data signals, application-specific integrated circuits with appropriate combinational logic gate circuits, programmable gate arrays, field programmable gate arrays, etc.

[0126] Those of ordinary skill in the art can understand that all or part of the steps carried out in implementing the above-described embodiment methods can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0127] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A fuel cell engine having an activation system, characterized in that: include: Hydrogen supply system, oxygen supply system, thermal management system, activation system and fuel cell stack, among which, The hydrogen supply system is used to supply hydrogen to the activation system when an activation instruction is received and the current activation type is a fault activation type; The oxygen supply system is used to supply oxygen to the activation system when an activation instruction is received and the current activation type is the fault activation type; The thermal management system is used to heat the activation system when the current ambient temperature is lower than a preset temperature; The activation system is used to sequentially enter the anode humidification and purge stage, the anode humidification and hydrogen pressure maintenance stage, the cathode humidification and purge stage and the static operation stage when receiving an activation instruction and the current activation type is the fault activation type, until the fuel cell engine is started.

2. The fuel cell engine with an activation system according to claim 1, characterized in that: The activation system comprises: a water tank, a deionizing element, a pressurizing element, a heat exchange element, a first temperature sensor, a three-way valve, a first nozzle, a second nozzle, a first check valve, a first stop valve, a second stop valve, a gas humidification assembly, a second check valve, a third check valve and a first thermostat, which are connected in sequence. The input end of the three-way valve is connected to the first temperature sensor, the first output end of the three-way valve is connected to one end of the first nozzle, and the second output end of the three-way valve is connected to one end of the second nozzle; The other end of the first nozzle is connected to one end of the second stop valve, and the other end of the second stop valve is connected to the first input end of the gas humidification assembly; The other end of the second nozzle is connected to one end of the first one-way valve, and the other end of the first one-way valve is connected to the second input end of the gas humidification assembly; One end of the first stop valve is connected to the hydrogen supply output end of the hydrogen supply system, and the other end of the first stop valve is connected to the third input end of the gas humidification assembly; The first output end of the gas humidification assembly is connected to the anode input end of the stack through the second one-way valve, and the second output end of the gas humidification assembly is connected to the cathode input end of the stack through the third one-way valve; The heat exchange element is connected to the pressurizing element, the thermal management system and the hydrogen supply system respectively.

3. The fuel cell engine with an activation system according to claim 2, characterized in that: The hydrogen supply system comprises: a hydrogen supply component, a first switch component, a hydrogen-to-hydrogen plate exchanger, a proportional valve, a hydrogen shut-off valve, an ejector and a hydrogen pressure sensor, wherein: One end of the first switch component is connected to the output end of the hydrogen supply component; The first input end of the hydrogen-hydrogen plate exchanger is connected to the other end of the first switch component, the first output end of the hydrogen-hydrogen plate exchanger is connected to the input end of the proportional valve, the second input end of the hydrogen-hydrogen plate exchanger is connected to the thermal management component, and the second output end of the hydrogen-hydrogen plate exchanger is connected to the thermal management component; The first output end of the proportional valve is connected to one end of the hydrogen shut-off valve, and the second output end of the proportional valve is connected to one end of the first shut-off valve; The input end of the ejector is connected to the other end of the first shut-off valve, and the output end of the ejector is connected to the anode input end of the stack; The hydrogen pressure sensor is arranged between the output end of the ejector and the anode input end of the fuel cell stack.

4. The fuel cell engine with an activation system according to claim 2, characterized in that: The oxygen supply system includes: an air filter, an air compressor, an air pressure sensor, a first air temperature sensor, an intercooler, a second air temperature sensor, a bypass valve, and a third stop valve, wherein: The air filter, the air compressor, the air pressure sensor, the first air temperature sensor, the intercooler and one end of the second air temperature sensor are connected in sequence; The input end of the bypass valve is connected to the other end of the second air temperature sensor, the first output end of the bypass valve is connected to one end of the third stop valve, and the second output end of the bypass valve is connected to the first input end of the gas humidification assembly; The other end of the third stop valve is connected to the cathode input end of the fuel cell stack.

5. The fuel cell engine with an activation system according to claim 2, characterized in that: The thermal management system comprises: a heat sink, a second temperature sensor, a third temperature sensor, a heating element, a second thermostat and a water pump, wherein: The output end of the heat sink is connected to the input end of the water pump; The output end of the water pump is connected to the cathode input end of the fuel cell stack; The input end of the second thermostat is connected to the input end of the first thermostat and the cathode output end of the stack respectively, the first output end of the second thermostat is connected to the input end of the heat sink, and the second output end of the second thermostat is connected to one end of the heat sink; The other end of the heat sink is connected to the input end of the water pump; The second temperature sensor is arranged directly between the output end of the heat sink and the input end of the water pump; The third temperature sensor is disposed between the first output end of the second thermostat and the input end of the heat sink.

6. A method for activating a fuel cell engine, characterized in that: A fuel cell engine with an activation system according to any one of claims 1 to 5, wherein the method comprises the following steps: Determine whether a confirmation activation instruction is received; If the confirmation activation instruction is received, determining the current activation type based on the confirmation activation instruction; If the current activation type is a fault activation type, the activation system is controlled to sequentially enter the anode humidification and purging stage, the anode humidification and hydrogen pressure maintenance stage, the cathode humidification and purging stage and the static operation stage until the fuel cell engine is started.

7. The method according to claim 6, characterized in that The controlling of the activation system to sequentially enter the anode humidification and purge stage, the anode humidification and hydrogen pressure maintenance stage, the cathode humidification and purge stage and the static operation stage includes: Determine whether the liquid level of the water tank is greater than the preset liquid level; If the liquid level of the water tank is greater than the preset liquid level, the hydrogen shut-off valve is closed, the first shut-off valve and the first switch assembly are opened, and the three-way valve is adjusted to make the second nozzle and the heat exchange element conductive, and the hydrogen and the atomized deionized water generated by the second nozzle are mixed and humidified and then enter the anode input end of the fuel cell stack through the second one-way valve for pulse humidification and purging, and when the purging meets the first preset condition, the three-way valve is adjusted to make the third nozzle and the heat exchange element conductive; The third stop valve is closed, and the opening of the back pressure valve of the fuel cell engine is adjusted to the first preset opening, and the second stop valve is opened, and the oxygen and the atomized deionized water generated by the first nozzle are mixed and humidified and then enter the cathode input end of the stack through the third one-way valve for cathode humidification and purge, and when the purge meets the second preset condition, it is determined that the anode humidification hydrogen pressure maintenance stage is completed, and the opening of the back pressure valve of the fuel cell engine is adjusted to the second preset opening; After controlling the fuel cell engine to rest for a first preset time period, controlling the fuel cell engine to start.

8. The method according to claim 6, characterized in that After determining the current activation type based on the confirmation activation instruction, the method further includes: If the current activation type is a periodic scheduled activation type, adjusting the hydrogen supply system to operate at a first hydrogen metering ratio, and controlling the fuel cell engine to be loaded to a first target power and operate for a second preset time; Based on the preset load reduction strategy, the fuel cell engine is controlled to be shut down during load reduction, and the hydrogen supply system is adjusted from the first hydrogen stoichiometric ratio to a preset hydrogen stoichiometric ratio.

9. The method according to claim 6, characterized in that After determining the current activation type based on the confirmation activation instruction, the method further includes: If the current activation type is an online activation type, when the battery SOC is in a preset interval, the hydrogen supply system is adjusted to operate at a second hydrogen stoichiometric ratio, and the fuel cell engine is controlled to operate for a third preset time.

10. The method according to claim 6, characterized in that The determining whether the activation confirmation instruction is received includes: Determine whether a power-on command is received; If the power-on instruction is received, the duration from the last power-off is obtained; If the duration is greater than a fourth preset duration and the fuel cell engine is in a preset fault state, a first activation requirement is sent to a preset mobile terminal, and upon receiving a confirmation activation instruction sent by a user based on the first activation requirement, it is determined that the confirmation activation instruction is received; Furthermore, if the duration is less than or equal to the fourth preset duration, then when the fuel cell engine operating time is greater than the fifth preset time, a second activation request is sent to the preset mobile terminal, and when the confirmation activation instruction sent by the user based on the second activation request is received, it is determined that the confirmation activation instruction has been received; and when the fuel cell engine operating time is less than the fifth preset time and the fuel cell engine operating time is greater than or equal to the sixth preset time, a third activation request is sent to the preset mobile terminal, and when the confirmation activation instruction sent by the user based on the third activation request is received, it is determined that the confirmation activation instruction has been received.

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