Method and apparatus for controlling startup of fuel cell system

Abstract

An embodiment of the present invention provides a method for controlling start-up of a fuel cell system, comprising: in response to a wake-up signal, triggering execution of a start-up program of a hydrogen concentration sensor of the fuel cell system, an insulation detection program of an insulation detection module, and a preparation program of an auxiliary electric control component in parallel (S1); after the hydrogen concentration sensor completes the starting program, whether the hydrogen concentration of the fuel cell system is lower than a preset concentration threshold value or not is judged; determining whether the insulation resistance of the fuel cell stack is higher than a preset resistance threshold (S3); and if the hydrogen concentration is lower than a preset concentration threshold value and the insulation resistance is higher than a preset resistance threshold value, executing a power-on program of the fuel cell system to start the fuel cell system after the auxiliary electric control component completes the preparation program (S4). According to the invention, the hydrogen leakage fault and the insulation resistance abnormity of the fuel cell stack can be eliminated in the starting process of the fuel cell system, and the fault duration time when the fuel cell system is started is saved.

Description

Technical Field

[0001] The present invention relates to the field of fuel cells, and particularly to a method for controlling the start-up of a fuel cell system, a device for controlling the start-up of a fuel cell system, and a computer program product for at least assisting in implementing the steps of the method according to the present invention. Background Art

[0002] With the development of new energy technologies, hydrogen fuel cells have been applied in the field of new energy vehicles, which have the advantages of high energy density and pollution-free products. However, considering the flammable and explosive nature of hydrogen itself, a self-diagnosis program of the fuel cell system needs to be executed before the start-up of the fuel cell system to avoid fuel cell failures as much as possible.

[0003] In the existing self-diagnosis program of the fuel cell system, usually only the high-voltage components, low-voltage components, and control unit of the fuel cell system are diagnosed for operating failures. However, especially when the fuel cell system is placed in a low-temperature operating environment, some components in the fuel cell system (such as hydrogen concentration sensors) need to go through a long self-heating stage before they can enter the functional operating state, and the hydrogen concentration sensors cannot monitor the hydrogen concentration of the fuel cell system before entering the functional operating state. Excessive hydrogen concentration will not only cause the start-up failure of the fuel cell system but also may lead to safety accidents of the fuel cell system.

[0004] Therefore, how to control the safe and rapid start-up of the fuel cell system has become a technical problem to be solved currently. Summary of the Invention

[0005] The object of the present invention is to provide a method for controlling the start-up of a fuel cell system, a device for controlling the start-up of a fuel cell system, and a computer program product to at least partially solve the problems in the prior art.

[0006] According to a first aspect of the present invention, there is provided a method for controlling the start-up of a fuel cell system, the method comprising:

[0007] - Step S1: In response to a wake-up signal, triggering the execution of the start-up program of the hydrogen concentration sensor of the fuel cell system, the insulation detection program of the insulation detection module, and the preparatory program of the auxiliary electronic control components in parallel;

[0008] - Step S2: After the hydrogen concentration sensor completes the start-up program, determining whether the hydrogen concentration of the fuel cell system detected by the hydrogen concentration sensor is lower than a preset concentration threshold;

[0009] - Step S3: Determining whether the insulation resistance of the fuel cell stack of the fuel cell system detected by the insulation detection module is higher than a preset resistance threshold; and

[0010] - Step S4: If the hydrogen concentration is lower than a preset concentration threshold and the insulation resistance is higher than a preset resistance threshold, after waiting for the auxiliary electronic control component to complete the preparation procedure, execute the power-on procedure of the fuel cell system to start the fuel cell system.

[0011] The core concept of the present invention is that after receiving a wake-up signal, the start-up procedure of the hydrogen concentration sensor of the fuel cell system, the insulation detection procedure of the insulation detection module, and the preparation procedure of the auxiliary electronic control component are triggered and executed in parallel to ensure that the hydrogen concentration detection result and the insulation resistance detection result of the fuel cell stack meet the preset standards, and the power-on procedure of the fuel cell system is executed only after waiting for the auxiliary electronic control component to complete the preparation procedure. Thus, not only can hydrogen leakage faults and abnormal insulation resistance of the fuel cell stack be excluded during the start-up process of the fuel cell system, but also the fuel cell system can be shut down in advance when various types of start-up faults are detected, saving the fault duration during the start-up of the fuel cell system.

[0012] According to a second aspect of the present invention, there is provided a device for controlling the start-up of a fuel cell system, the device comprising the following components:

[0013] - A hydrogen concentration sensor configured to detect the hydrogen concentration of the fuel cell system;

[0014] - An insulation detection module configured to detect the insulation resistance of the fuel cell stack of the fuel cell system;

[0015] - An auxiliary electronic control component configured to execute a preparation procedure; and

[0016] - A fuel cell control module configured to execute the method according to the present invention.

[0017] According to a third aspect of the present invention, there is provided a computer program product, such as a computer-readable program carrier, comprising computer program instructions that, when executed by a processor, at least assist in implementing the steps of the method according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Hereinafter, the present invention will be described in more detail by referring to the accompanying drawings, and the principles, features, and advantages of the present invention can be better understood. The accompanying drawings include:

[0019] Figure 1 A working flow chart of a method for controlling the start-up of a fuel cell system according to an exemplary embodiment of the present invention is shown;

[0020] Figure 2The working flowchart of a method for controlling the startup of a fuel cell system according to another exemplary embodiment of the present invention is shown;

[0021] Figure 3 The schematic structural block diagram of a fuel cell system according to an exemplary embodiment of the present invention is shown;

[0022] Figure 4 The working flowchart of a method for controlling the startup of a fuel cell system according to another exemplary embodiment of the present invention is shown;

[0023] Figure 5 The working flowchart of a method for controlling the startup of a fuel cell system according to another exemplary embodiment of the present invention is shown; and

[0024] Figure 6 The structural block diagram of a device for controlling the startup of a fuel cell system according to an exemplary embodiment of the present invention is shown. Detailed Description of the Invention

[0025] In order to make the technical problems to be solved, technical solutions and beneficial technical effects of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the protection scope of the present invention.

[0026] Figure 1 The working flowchart of a method for controlling the startup of a fuel cell system according to an exemplary embodiment of the present invention is shown. The following exemplary embodiments describe the method according to the present invention in more detail.

[0027] As Figure 1 shown, the method may include steps S1 to S4. In step S1, in response to a wake-up signal, the startup program of the hydrogen concentration sensor 11 of the fuel cell system 100, the insulation detection program of the insulation detection module 12, and the preparation program of the auxiliary electronic control component 13 are triggered and executed in parallel. In the sense of the present invention, "triggered and executed in parallel" means that these programs are executed synchronously in time, whereby the time consumed for executing these programs can be saved as much as possible during the startup process of the fuel cell system. The following will be described in detail in conjunction with Figure 2 the working flowchart of a method for controlling the startup of a fuel cell system according to another exemplary embodiment of the present invention shown. Only the differences from the Figure 1 embodiment shown will be described here, and the same steps will not be repeated for the sake of brevity.

[0028] As Figure 2As shown, the step S1 may at least include steps S11 to S15. In step S11, in response to a wake-up signal sent by the vehicle controller, the hydrogen concentration sensor 11, the insulation detection module 12, and the fuel cell control module 14 of the fuel cell system 100 are placed in the wake-up state. The fuel cell control module 14 is a key component of the fuel cell system, which is used to control the various operating processes of the entire fuel cell system. Therefore, the fuel cell control module 14 is immediately woken up after receiving the wake-up signal sent by the vehicle controller. At the same time, considering that the hydrogen concentration sensor 11 for monitoring hydrogen leakage of the fuel cell system 100 and the insulation detection module 12 for the fuel cell system 100 are both important components related to fuel cell safety, the hydrogen concentration sensor 11 and the insulation detection module 12 are also immediately woken up after receiving the wake-up signal sent by the vehicle controller.

[0029] In step S12, the auxiliary electronic control components 13 of the fuel cell system 100 are woken up by the fuel cell control module 14. In the context of the present invention, "auxiliary electronic control components" can be understood as various electronic control components associated with the startup of the fuel cell system, such as including an air supply unit, a hydrogen supply unit, a water and heat management unit, etc., which cooperate with each other to execute the startup procedure of the fuel cell system.

[0030] After the hydrogen concentration sensor 11, the insulation detection module 12, and the auxiliary electronic control components 13 are all placed in the wake-up state, steps S13, S14, and S15 are executed in parallel to synchronously execute the startup procedure of the hydrogen concentration sensor 11, the insulation detection procedure of the insulation detection module 12, and the preparation procedure of the auxiliary electronic control components 13 in terms of time. In step S14, the hydrogen concentration sensor 11 in the wake-up state autonomously triggers the execution of its startup procedure, which especially includes a self-heating procedure for increasing the temperature of the hydrogen concentration sensor 11. Especially in the case of low ambient temperature, this self-heating procedure may last for, for example, 1 second to 10 seconds. At the same time, in step S15, the fuel cell control module 14 triggers the execution of the insulation detection procedure of the insulation detection module 12 to detect the insulation resistance of the fuel cell stack 21. Figure 3 The structural block diagram of a fuel cell system according to an exemplary embodiment of the present invention is shown. The insulation detection module 12 is arranged, for example, between the fuel cell stack 21 and the relay of the DC / DC converter 22 and is configured to detect the insulation resistance of the fuel cell stack 21 of the fuel cell system 100. Wherein, in the initial state, the positive and negative poles of the relay of the DC / DC converter 22 are kept off.

[0031] In step S13, the auxiliary electronic control components 13 in the wake-up state autonomously trigger the execution of their preparation procedure. The following is combined with Figure 4The working flowchart of the method for controlling the startup of a fuel cell system according to another exemplary embodiment of the present invention shown elaborates step S13. For clarity, only the steps S131 to S135 that step S13 at least includes are shown in Figure 4 and other steps are not shown again.

[0032] In step S131, the auxiliary electronic control component 13 in the wake-up state independently triggers and executes a low-voltage self-diagnosis program and determines whether the low-voltage self-diagnosis fault occurs. Here, the auxiliary electronic control component 13 includes a low-voltage auxiliary electronic control component powered by the vehicle-mounted low-voltage power supply network and a high-voltage auxiliary electronic control component powered by the vehicle-mounted high-voltage power supply network. In the initial condition of the fuel cell system 100, only the vehicle-mounted low-voltage power supply network supplies low-voltage power to the wake-up auxiliary electronic control component 13, so the low-voltage self-diagnosis process and the high-voltage self-diagnosis process are executed separately. Here, it is necessary to execute the low-voltage self-diagnosis program for all auxiliary electronic control components 13 (including low-voltage auxiliary electronic control components and high-voltage auxiliary electronic control components). If no operation faults of the auxiliary electronic control component 13 occur during the entire low-voltage self-diagnosis program, and there are no fault signals in the status feedback signals of all auxiliary electronic control components 13 in the low-voltage power supply state, and there are no error signals in the control logic monitoring parameters of all auxiliary electronic control components 13 (for example, evaluating the rationality of the output parameters of each sensor through the control logic self-check process of the fuel cell control module 14), it is determined that the low-voltage self-diagnosis fault has not occurred. In other cases, it is determined that the low-voltage self-diagnosis fault has occurred.

[0033] If the low-voltage self-diagnosis fault occurs, then in step S132, the fuel cell system 100 is shut down, that is, the startup program of the fuel cell system is terminated in advance. If the low-voltage self-diagnosis fault does not occur, then in step S133, the vehicle-mounted high-voltage power supply network is enabled to supply power to the high-voltage auxiliary electronic control component, for example, by closing the positive and negative poles of the relay in the high-voltage power distribution unit 23. The high-voltage auxiliary electronic control component in the wake-up state independently triggers and executes a high-voltage self-diagnosis program and determines whether the high-voltage self-diagnosis fault occurs. Here, only the high-voltage auxiliary electronic control component executes the high-voltage self-diagnosis program. If no operation faults of the high-voltage auxiliary electronic control component occur during the entire high-voltage self-diagnosis program, and there are no fault signals in the status feedback signals of the high-voltage auxiliary electronic control component in the high-voltage power supply state, and there are no error signals in the control logic monitoring parameters of the high-voltage auxiliary electronic control component (for example, evaluating the rationality of the control logic of the high-voltage auxiliary electronic control component in the high-voltage power supply state through the control logic self-check process of the fuel cell control module 14), it is determined that the high-voltage self-diagnosis fault has not occurred. In other cases, it is determined that the high-voltage self-diagnosis fault has occurred.

[0034] If the high-voltage auxiliary self-diagnosis fault occurs, the fuel cell system 100 is shut down in step S134, that is, the subsequent startup procedure of the fuel cell system 100 is no longer executed. If the self-diagnosis fault of the high-voltage auxiliary electronic control component does not occur, the preheating procedure of the fuel cell system 100 is started in step S135, and after the preheating procedure is completed, the hydrogen purge procedure of the fuel cell system 100 is started. Especially when the fuel cell system 100 is started at a relatively low ambient temperature, the water existing in the recirculation stream may solidify. For example, the water may solidify when it initially enters the injector and contacts a cold surface, or the water may solidify in the mixing chamber of the fuel cell stack 21 when it encounters the cold fresh hydrogen stream flowing in from the injector inlet, and the temperature of the fresh hydrogen stream largely depends on the temperature of the fuel storage tank. Therefore, it is necessary to heat some components of the fuel cell system 100 (such as including the injector, hydrogen supply valve, fuel storage tank, etc.) through the preheating procedure. After the preheating procedure is completed, the hydrogen purge procedure of the fuel cell system 100 is started to increase the hydrogen purity in the anode of the fuel cell. After the hydrogen purge process is completed, the preparatory procedure of the auxiliary electronic control component 13 is completed.

[0035] It should be noted that the preparatory procedure of the auxiliary electronic control component 13 is not only completed by the auxiliary electronic control component 13, but also requires the assistance of other non-electronic control components. For example, a pressure gauge for detecting the hydrogen pressure in the hydrogen circulation pipeline will send an error signal when detecting hydrogen leakage, and the hydrogen pressure in the hydrogen circulation pipeline is usually greater than the atmospheric pressure when there is no leakage.

[0036] In step S2, after the hydrogen concentration sensor 11 completes the startup procedure, it is judged whether the hydrogen concentration of the fuel cell system 100 detected by the hydrogen concentration sensor 11 is lower than a preset concentration threshold. Here, the hydrogen concentration sensor 11 may include: a first hydrogen concentration sensor arranged at the purge port of the fuel cell stack 21, which is used to detect the first hydrogen concentration at the purge port of the fuel cell stack 21; a second hydrogen concentration sensor arranged at the top area of the engine of the fuel cell system 100 (where the leaked hydrogen may accumulate the most), which is used to detect the second hydrogen concentration at the top area of the engine of the fuel cell system 100; and / or a third hydrogen concentration sensor arranged at the exhaust port of the fuel cell system 100, which is used to detect the third hydrogen concentration at the exhaust port of the fuel cell system 100. When the first hydrogen concentration, the second hydrogen concentration, and / or the third hydrogen concentration are all lower than the corresponding preset concentration thresholds, it is judged that the hydrogen concentration of the fuel cell system 100 is lower than the preset concentration threshold.

[0037] In step S3, it is determined whether the insulation resistance of the fuel cell stack 21 of the fuel cell system 100 detected by the insulation detection module 12 is higher than a preset resistance threshold. Considering that it is necessary to first establish the open-circuit voltage of the fuel cell stack 21 before closing the relay of the DC / DC converter 22 during the startup process of the fuel cell system 100, if the insulation resistance of the fuel cell stack 21 is too small, an electric breakdown phenomenon will occur during the process of establishing the open-circuit voltage, thereby triggering a failure of the fuel cell system 100. For safety reasons, the insulation resistance between the anode and cathode of the fuel cell stack 21 and any position on the housing of the fuel cell stack 21 needs to reach the preset resistance threshold. For example, the leakage of the reaction gas (including hydrogen and air) with a high humidity in the fuel cell stack 21 or the leakage of the coolant may cause the insulation resistance of the fuel cell stack 21 to decrease.

[0038] If the hydrogen concentration is lower than the preset concentration threshold and the insulation resistance is higher than the preset resistance threshold, then in step S4, after waiting for the auxiliary electronic control component 13 to complete the preparatory procedure of the auxiliary electronic control component 13 (i.e., the preparatory procedure consisting of steps S131 to S135), the power-on procedure of the fuel cell system 100 is executed to start the fuel cell system 100.

[0039] The power-on procedure of the fuel cell system 100 is elaborated in detail below. In the power-on procedure, the hydrogen supply unit and the air supply unit of the fuel cell system 100 can be turned on. The hydrogen input into the anode of the fuel cell by the hydrogen supply unit is dissociated into hydrogen ions H+ and electrons e- under the action of the anode catalyst. Since the anode and cathode of the fuel cell are not connected through an external circuit, the hydrogen ions H+ pass through the electrolyte layer of the fuel cell and accumulate at the cathode of the fuel cell, thereby forming a positive potential at the cathode of the fuel cell. The electrons e- accumulate at the anode of the fuel cell because they cannot pass through the electrolyte layer, thereby forming a negative potential at the anode of the fuel cell. Thus, the open-circuit voltage of the fuel cell stack 21 of the fuel cell system 100 is established.

[0040] After establishing the open-circuit voltage of the fuel cell stack 21, the relay of the DC / DC converter 22 of the fuel cell system 100 is closed to connect the power supply circuit of the fuel cell stack 21 to the vehicle-mounted high-voltage power supply network 3. Here, the positive and negative poles of the relay of the DC / DC converter 22 can be closed, so that the output voltage of the fuel cell stack 21 is provided to the vehicle-mounted high-voltage power supply network 3 through the boost conversion of the boost module 221 via the high-voltage power distribution unit 23, thereby completing the startup process of the fuel cell system 100.

[0041] According to an embodiment of the present invention, after receiving a wake-up signal, the startup procedures of the hydrogen concentration sensor of the fuel cell system, the insulation detection procedures of the insulation detection module, and the preparation procedures of the auxiliary electronic control components are triggered in parallel to ensure that the hydrogen concentration detection result and the insulation resistance detection result of the fuel cell stack meet the preset standards, and the power-on procedure of the fuel cell system is executed only after waiting for the auxiliary electronic control components to complete the preparation procedures. Thus, not only can hydrogen leakage faults and abnormal insulation resistance of the fuel cell stack be excluded during the startup process of the fuel cell system, but also the fuel cell system can be shut down in advance in the case of detecting various types of startup faults, saving the fault duration during the startup of the fuel cell system.

[0042] Figure 5 The working flowchart of a method for controlling the startup of a fuel cell system according to another exemplary embodiment of the present invention is shown. Only the differences from the Figure 1 embodiment shown are described below, and the same steps are not repeated for the sake of brevity.

[0043] The method may further include step S5. If the hydrogen concentration is not lower than the preset concentration threshold or the insulation resistance is not higher than the preset resistance threshold, the fuel cell system 100 is shut down in step S5, that is, the subsequent startup procedures of the fuel cell system 100 are no longer executed, the startup process of the fuel cell system 100 is terminated in advance, the startup fault duration of the fuel cell system 100 is reduced, and the occurrence of more serious startup faults is effectively avoided.

[0044] In addition, it should be noted that the step numbers described herein do not necessarily represent the order of sequence, but are merely a kind of reference numeral. According to the specific situation, the order can be changed as long as the technical purpose of the present invention can be achieved.

[0045] Figure 6 The structural block diagram of a device 1 for controlling the startup of a fuel cell system according to an exemplary embodiment of the present invention is shown.

[0046] As Figure 6 shown, the device 1 may include the following components:

[0047] - A hydrogen concentration sensor 11, which is configured to detect the hydrogen concentration of the fuel cell system 100. Among them, the hydrogen concentration sensor 11 includes, for example, a first hydrogen concentration sensor arranged at the purge port of the fuel cell stack 21, a second hydrogen concentration sensor arranged at the top area of the engine of the fuel cell system 100, and / or a third hydrogen concentration sensor arranged at the exhaust port of the fuel cell system 100;

[0048] - An insulation detection module 12, which is configured to detect the insulation resistance of the fuel cell stack 21 of the fuel cell system 100;

[0049] - An auxiliary electronic control component 13, which is configured to execute a preparatory program of the fuel cell system 100; and

[0050] - A fuel cell control module 14, which is configured to execute the method according to the present invention.

[0051] It should be understood that in this text, the expressions "first", "second", "third", etc. are only for descriptive purposes, and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly specifying the quantity of the indicated technical features.

[0052] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when describing a single embodiment with respect to a specific feature only. The feature examples provided in the present disclosure are for illustrative purposes only and not for limitation, unless otherwise stated. In specific implementations, multiple features may be combined with each other according to actual needs and where technically feasible. Various substitutions, changes, and modifications can also be conceived without departing from the spirit and scope of the present invention.

Claims

1. A method for controlling the startup of a fuel cell system (100), the method comprising: Step S1: In response to a wake-up signal, trigger and execute in parallel the startup program of the hydrogen concentration sensor (11) of the fuel cell system (100), the insulation detection program of the insulation detection module (12), and the preparation program of the auxiliary electronic control component (13); Step S2: After the hydrogen concentration sensor (11) completes the startup program, determine whether the hydrogen concentration of the fuel cell system (100) detected by the hydrogen concentration sensor (11) is lower than a preset concentration threshold; Step S3: Determine whether the insulation resistance of the fuel cell stack (21) of the fuel cell system (100) detected by the insulation detection module (12) is higher than a preset resistance threshold; and Step S4: If the hydrogen concentration is lower than the preset concentration threshold and the insulation resistance is higher than the preset resistance threshold, wait for the auxiliary electronic control component (13) to complete the preparation program, and then execute the power-on program of the fuel cell system (100) to start the fuel cell system (100).

2. The method according to claim 1, wherein The step S1 at least includes: Step S11: In response to a wake-up signal sent by the vehicle controller, place the hydrogen concentration sensor (11), the insulation detection module (12), and the fuel cell control module (14) of the fuel cell system (100) in a wake-up state; Step S12: Wake up the auxiliary electronic control component (13) of the fuel cell system (100) through the fuel cell control module (14); Step S13: The auxiliary electronic control component (13) in the wake-up state independently triggers and executes its preparation program; Step S14: The hydrogen concentration sensor (11) in the wake-up state independently triggers and executes its startup program; and Step S15: Trigger and execute the insulation detection program of the insulation detection module (12) through the fuel cell control module (14) to detect the insulation resistance of the fuel cell stack (21); wherein, the step S13, the step S14, and the step S15 are executed in parallel.

3. The method according to claim 2, wherein The step S13 at least includes: Step S131: The auxiliary electronic control component (13) in the wake-up state independently triggers and executes a low-voltage self-diagnosis program, and determines whether a low-voltage self-diagnosis fault occurs; Step S132: If a low-voltage self-diagnosis fault occurs, shut down the fuel cell system (100); Step S133: If no low-voltage self-diagnosis fault occurs, activate the in-vehicle high-voltage power supply network (3) to supply power to the high-voltage auxiliary electronic control component, and the high-voltage auxiliary electronic control component in the wake-up state independently triggers and executes a high-voltage self-diagnosis program, and determines whether a high-voltage self-diagnosis fault occurs; Step S134: If a high-voltage self-diagnosis fault occurs, shut down the fuel cell system (100); and Step S135: If no high-voltage self-diagnosis fault occurs, start the preheating program of the fuel cell system (100), and start the hydrogen purge program of the fuel cell system (100) after completing the preheating program.

4. The method according to any one of claims 1 to 3, characterized in that, The power-on program of the fuel cell system (100) includes: Turn on the hydrogen supply unit and air supply unit of the fuel cell system (100) to establish the open-circuit voltage of the fuel cell stack (21) of the fuel cell system (100); and Close the relay of the DC / DC converter (22) of the fuel cell system (100) to connect the power supply circuit of the fuel cell stack (21) to the in-vehicle high-voltage power supply network (3).

5. The method according to any one of claims 1 to 3, characterized in that The hydrogen concentration detected by the hydrogen concentration sensor (11) includes a first hydrogen concentration at the purge port of the fuel cell stack (21), a second hydrogen concentration at the top region of the engine of the fuel cell system (100), and / or a third hydrogen concentration at the exhaust port of the fuel cell system (100). Wherein, when the first hydrogen concentration, the second hydrogen concentration, and / or the third hydrogen concentration are all lower than the corresponding preset concentration thresholds, it is determined that the hydrogen concentration of the fuel cell system (100) is lower than the preset concentration threshold.

6. The method according to any one of claims 1 to 3, characterized in that, The method further includes: Step S5: If the hydrogen concentration is not lower than the preset concentration threshold or the insulation resistance is not higher than the preset resistance threshold, turn off the fuel cell system (100).

7. A device (1) for controlling the start of a fuel cell system (100), the device (1) includes the following components: A hydrogen concentration sensor (11) configured to detect the hydrogen concentration of the fuel cell system (100); An insulation detection module (12) configured to detect the insulation resistance of the fuel cell stack (21) of the fuel cell system (100); An auxiliary electronic control component (13) configured to execute a preparatory program; and A fuel cell control module (14) configured to execute the method according to any one of claims 1 to 6.

8. The device (1) according to claim 7, characterized in that, The hydrogen concentration sensor (11) includes a first hydrogen concentration sensor arranged at the purge port of the fuel cell stack (21), a second hydrogen concentration sensor arranged at the top region of the engine of the fuel cell system (100), and / or a third hydrogen concentration sensor arranged at the exhaust port of the fuel cell system (100).

9. A computer program product, such as a computer-readable program carrier, containing computer program instructions that, when executed by a processor, at least assist in implementing the steps of the method according to any one of claims 1 to 6.

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