Startup control method and apparatus for fuel cell system, electronic device and medium

Abstract

The present application relates to a startup control method and apparatus for a fuel cell system, an electronic device and a medium, which are applied to the technical field of fuel cells. The method comprises: introducing hydrogen and air into a cell stack; setting the load current as a first current value, and measuring the single-cell voltage value of the cell stack; if the single-cell voltage value is greater than or equal to a first voltage value and less than or equal to a second voltage value, starting a fuel cell system; if the single-cell voltage value is greater than the second voltage value, increasing the load current, and returning to measure the single-cell voltage value of the cell stack; if the single-cell voltage value is less than the first voltage value, decreasing the load current; if the decreased load current is greater than a second current value, measuring the single-cell voltage value of the cell stack, and, if the single-cell voltage value is greater than or equal to the first voltage value, returning to set the load current as the first current value after the fuel cell system runs for a period of time at the decreased load current; and if a duration in which the decreased load current is less than or equal to the second current value and the single-cell voltage value is less than the first voltage value is longer than a preset period of time, stopping startup. The present application can prolong the service life of fuel cell systems.

Description

Fuel cell system startup control method, device, electronic equipment and medium Technical Field

[0001] The present application relates to the field of fuel cell technology, and in particular to a startup control method, device, electronic equipment, and medium for a fuel cell system. Background Art

[0002] A fuel cell system consists of a stack, hydrogen subsystem, air subsystem, cooling subsystem, and electronic control system. The stack is a key component of the fuel cell system, and its performance directly determines the quality of the fuel cell system. The dynamic operation of the fuel cell system can affect stack performance degradation, especially during the startup phase. Improper startup methods can directly lead to stack performance degradation and even damage. Therefore, the startup control method for the fuel cell system is crucial, affecting the stack's performance, service life, and startup failure rate.

[0003] In related technologies, during the startup process, hydrogen and air are introduced into the fuel cell system in sequence, and then the current is quickly loaded to start the fuel cell system. During the startup process, the air stoichiometric ratio is reduced to avoid the generation of high potential in the stack. However, this method still causes the stack to be at high potential for a long time during the system startup process, which accelerates the corrosion of the stack catalyst, gas diffusion, and electrode plates.

[0004] In addition, when the fuel cell system is used again after being stored for a long time, the system is still started using the quick load method. This method cannot determine whether the status of the battery stack supports the normal startup of the system. If the system cannot start normally, this method will extend the system startup time, and in severe cases will cause the system to malfunction and shut down.

[0005] Summary of the Invention

[0006] In order to solve the above technical problems, the present application provides a startup control method, device, electronic equipment and medium for a fuel cell system.

[0007] According to a first aspect of the present application, a startup control method for a fuel cell system is provided, comprising:

[0008] When the fuel cell system is started, hydrogen and air are introduced into the fuel cell stack;

[0009] Setting the load current of the fuel cell system to a first current value, detecting a single-chip voltage value of the fuel cell stack, and comparing the single-chip voltage value with the first voltage value and the second voltage value, wherein the second voltage value is greater than the first voltage value;

[0010] When the single-chip voltage value is greater than or equal to a first voltage value and less than or equal to a second voltage value, starting the fuel cell system;

[0011] When the single-chip voltage value is greater than the second voltage value, increasing the load current of the fuel cell system to reduce the single-chip voltage value of the stack, and returning to the step of detecting the single-chip voltage value of the stack;

[0012] When the single-chip voltage value is less than the first voltage value, reducing the load current of the fuel cell system to increase the single-chip voltage value of the stack;

[0013] detecting a single-chip voltage value of the battery stack, and determining whether the single-chip voltage value is less than a first voltage value;

[0014] When the single chip voltage value is less than the first voltage value, determining whether the reduced load current is greater than a second current value; wherein the second current value is less than the first current value;

[0015] When the reduced load current is greater than the second current value, reducing the load current of the fuel cell system to increase the single-cell voltage value of the stack, and returning to the step of detecting the single-cell voltage value of the stack and determining whether the single-cell voltage value is less than the first voltage value;

[0016] When the single-chip voltage value is greater than or equal to the first voltage value, operating the fuel cell system at the reduced load current for a preset first period of time, and then returning to the step of setting the load current of the fuel cell system to the first current value;

[0017] When the reduced load current is less than or equal to the second current value and the duration of the single chip voltage being less than the first voltage value is greater than a preset second time period, the fuel cell system is stopped.

[0018] Optionally, the introducing hydrogen and air into the fuel cell stack includes:

[0019] Introduce hydrogen into the fuel cell stack and detect the hydrogen pressure;

[0020] When the hydrogen pressure reaches the preset pressure, air is introduced into the fuel cell stack.

[0021] Optionally, the method further includes:

[0022] Before the pressure of the hydrogen reaches a preset pressure, the gas on the hydrogen side of the fuel cell stack is periodically discharged.

[0023] Optionally, increasing or decreasing the load current of the fuel cell system includes:

[0024] The load current of the fuel cell system is increased or decreased according to a preset current difference.

[0025] According to a second aspect of the present application, a startup control device for a fuel cell system is provided, comprising:

[0026] A gas inlet module is used to introduce hydrogen and air into the fuel cell stack when the fuel cell system is started;

[0027] A load current setting module, configured to set the load current of the fuel cell system to a first current value;

[0028] a first single-chip voltage value judgment module, configured to detect a single-chip voltage value of the stack and compare the single-chip voltage value with a first voltage value and a second voltage value, wherein the second voltage value is greater than the first voltage value;

[0029] a fuel cell system startup module, configured to start the fuel cell system when the single-chip voltage value is greater than or equal to a first voltage value and less than or equal to a second voltage value;

[0030] a load current increasing module, configured to increase the load current of the fuel cell system to reduce the single-chip voltage value of the stack when the single-chip voltage value is greater than the second voltage value, and return the single-chip voltage value to the first determination module;

[0031] a load current reducing module, configured to reduce the load current of the fuel cell system to increase the single-cell voltage value of the stack when the single-cell voltage value is less than a first voltage value;

[0032] a second single-chip voltage value judgment module, configured to detect a single-chip voltage value of the stack and determine whether the single-chip voltage value is less than a first voltage value;

[0033] a load current judgment module, configured to judge whether the reduced load current is greater than a second current value when the single chip voltage value is less than the first voltage value; wherein the second current value is less than the first current value;

[0034] The load current reducing module is further configured to reduce the load current of the fuel cell system when the reduced load current is greater than a second current value, so as to increase the single-chip voltage value of the stack, and return the single-chip voltage value to the second determining module;

[0035] a fuel cell system operation module, configured to operate the fuel cell system at the reduced load current for a preset first time period when the single-chip voltage value is greater than or equal to the first voltage value, and return to the load current setting module;

[0036] The stop-start module is used to stop starting the fuel cell system when the reduced load current is less than or equal to the second current value and the duration of the single-chip voltage value being less than the first voltage value is greater than a preset second time period.

[0037] Optionally, the gas introduction module is specifically used to introduce hydrogen into the fuel cell stack and detect the pressure of the hydrogen; when the pressure of the hydrogen reaches a preset pressure, air is introduced into the fuel cell stack.

[0038] Optionally, the device further comprises:

[0039] The hydrogen tail gas emission module is used to periodically emit gas from the hydrogen side of the fuel cell stack before the pressure of the hydrogen reaches a preset pressure.

[0040] Optionally, the load current increasing module is specifically configured to increase the load current of the fuel cell system according to a preset current difference when the single-chip voltage value is greater than the second voltage value;

[0041] The load current reduction module is used to reduce the load current of the fuel cell system according to a preset current difference when the single-chip voltage value is less than the first voltage value.

[0042] According to a third aspect of the present application, an electronic device is provided, comprising: a processor, wherein the processor is configured to execute a computer program stored in a memory, wherein the computer program implements the method described in the first aspect when executed by the processor.

[0043] According to a fourth aspect of the present application, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method described in the first aspect is implemented.

[0044] According to a fifth aspect of the present application, a computer program product is provided. When the computer program product is run on a computer, the computer is caused to execute the method described in the first aspect.

[0045] The technical solution provided by the embodiments of the present application has the following advantages compared with the prior art:

[0046] During the startup of the fuel cell system, the load current of the fuel cell system is set to a first current value, and the single-chip voltage value of the stack is detected. Based on the single-chip voltage value, the health status of the stack during the startup process is detected to protect the stack. Specifically, when the single-chip voltage value is greater than or equal to the first voltage value and less than or equal to the second voltage value, it indicates that the stack is in a healthy state and the fuel cell system is started. When the single-chip voltage value is greater than the second voltage value, it indicates that the single-chip voltage value of the stack is too high and the stack is in an unhealthy state. The load current of the fuel cell system can be increased once or multiple times to make the single-chip voltage value of the stack less than or equal to the second voltage value, effectively reducing the time the stack is at a high potential and avoiding the generation of high potential in the stack, thereby avoiding carbon corrosion of the catalyst, gas diffusion layer, and electrode plates caused by the high potential of the stack, ensuring the performance of the stack, and improving the life and reliability of the stack. When the single-chip voltage value is less than the first voltage value, the load current of the fuel cell system can be reduced once or multiple times to increase the single-chip voltage value of the stack. If the cell voltage is greater than or equal to the first voltage value, the fuel cell system is operated at the reduced load current for a preset first period of time, and then the process returns to the step of setting the fuel cell system load current to the first current value. In other words, the stack is controlled to operate at the maximum tolerable current for a period of time, which allows the stack to quickly reach a healthy state and reduces system startup time. If the reduced load current is less than or equal to the second current value, and the cell voltage remains below the first voltage value for longer than the preset second period of time, this indicates a performance issue with the stack and fails to meet startup requirements, and the fuel cell system is stopped. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0049] FIG1 is a flow chart of a startup control method for a fuel cell system according to an embodiment of the present application;

[0050] FIG2 is a schematic structural diagram of a startup control device for a fuel cell system according to an embodiment of the present application;

[0051] FIG3 is a schematic structural diagram of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION

[0052] In order to more clearly understand the above-mentioned objectives, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0053] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present application, not all of the embodiments.

[0054] Referring to FIG. 1 , FIG. 1 is a flow chart of a method for starting and controlling a fuel cell system according to an embodiment of the present application, which may include the following steps:

[0055] Step S102: When the fuel cell system is started, hydrogen and air are introduced into the fuel cell stack.

[0056] When the fuel cell system is started, hydrogen is usually introduced into the anode of the stack first, and then air is introduced into the cathode. The hydrogen and oxygen undergo an electrochemical reaction under the catalytic action, and the stack generates voltage.

[0057] In some embodiments, after hydrogen is introduced into the stack, the hydrogen pressure is detected, and when the hydrogen pressure reaches a preset pressure, air is introduced into the stack. This prevents air from the cathode side from penetrating into the anode side.

[0058] Optionally, before the hydrogen pressure reaches the preset pressure, the gas on the hydrogen side of the stack can be periodically discharged to ensure that when air is introduced into the cathode, the air and other gases remaining on the anode side are completely discharged, avoiding the formation of a hydrogen-air interface at the anode and accelerating the performance degradation of the catalyst.

[0059] Step S104: setting the load current of the fuel cell system to a first current value.

[0060] The first current value may be different for different scenarios. For example, the first current value may be 0.2A / cm 2 wait.

[0061] Step S106 , detecting a single-chip voltage value of the stack, and comparing the single-chip voltage value with the first voltage value and the second voltage value.

[0062] The first voltage value and the second voltage value are preset thresholds for detecting whether the battery stack is healthy, and the second voltage value is greater than the first voltage value. The magnitudes of the first voltage value and the second voltage value may also change with the change of the first current value.

[0063] Step S108 , when the single-chip voltage value is greater than or equal to the first voltage value and less than or equal to the second voltage value, starting the fuel cell system.

[0064] When the single-chip voltage value is greater than or equal to the first voltage value and less than or equal to the second voltage value, it means that the single-chip voltage value is neither too high nor too low, and the fuel cell stack is neither at a high potential nor at a low potential, that is, the fuel cell stack is in a healthy state and the fuel cell system can be started directly.

[0065] Step S110 , when the single-chip voltage value is greater than the second voltage value, increasing the load current of the fuel cell system to reduce the single-chip voltage value of the stack, and returning to step 106 .

[0066] When the single-chip voltage value is greater than the second voltage value, it indicates that the stack is at a high potential and the stack is in an unhealthy state. The single-chip voltage value of the stack can be reduced by increasing the load current of the fuel cell system. Alternatively, the load current of the fuel cell system can be increased by a preset current difference. For example, the preset current difference can be 0.02A / cm 2 The increased load current is 0.22A / cm 2 By cyclically executing steps S106 to S110, the load current can be increased multiple times, and accordingly, the voltage value of the single cell of the stack will gradually decrease. When the single cell voltage value is less than or equal to the second voltage value, it indicates that the stack is in a healthy state and the fuel cell system is started.

[0067] Step S112 , when the single-chip voltage value is less than the first voltage value, reducing the load current of the fuel cell system to increase the single-chip voltage value of the fuel cell stack.

[0068] When the single-chip voltage value is less than the first voltage value, it indicates that the stack is at a low potential and the stack is in an unhealthy state. The load current of the fuel cell system can be reduced to increase the single-chip voltage value of the stack. Alternatively, the load current of the fuel cell system can be reduced according to a preset current difference. For example, the preset current difference can be 0.02A / cm 2 The reduced load current is 0.18A / cm 2 .

[0069] Step S114 , detecting the voltage value of a single cell of the stack, and determining whether the voltage value of the single cell is less than a first voltage value.

[0070] After reducing the load current of the fuel cell system, the voltage value of the single cell of the stack will increase. If the voltage value of the single cell is still less than the first voltage value, step S116 is executed. If the voltage value of the single cell is greater than or equal to the first voltage value, step S120 is executed.

[0071] Step S116 , determining whether the reduced load current is greater than a second current value; wherein the second current value is less than the first current value.

[0072] If the reduced load current is greater than the second current value, step S118 is executed; if the reduced load current is less than or equal to the second current value, it indicates that the reduced load current is too small, and step S122 is executed.

[0073] Step S118 , reducing the load current of the fuel cell system to increase the single-chip voltage value of the fuel cell stack, and returning to step 114 .

[0074] Step S120 , operating the fuel cell system at the reduced load current for a preset first period of time, and then returning to step 104 .

[0075] In this embodiment of the present application, although the single-chip voltage value is greater than or equal to the first voltage value, the reduced load current is less than the first current value. However, the reduced load current is the maximum tolerable current of the fuel cell stack. In this case, the fuel cell stack is controlled to operate at the maximum tolerable current for a period of time. This process can increase the humidity in the fuel cell stack, allowing the stack to quickly reach a healthy state and reducing the startup time of the fuel cell system. Thereafter, the process returns to step S104 and re-executes the above startup process.

[0076] Step S122 , when the duration of the single-chip voltage value being less than the first voltage value is greater than a preset second time period, the fuel cell system is stopped.

[0077] If the duration of the single chip voltage value being less than the first voltage value is greater than the preset second time period, it indicates that the fuel cell system fails to meet the startup requirements and there is a problem with the performance of the fuel cell system. The system may report a fault and stop starting.

[0078] In the startup control method for a fuel cell system according to an embodiment of the present application, when a single-chip voltage value is greater than a second voltage value, indicating that the stack's single-chip voltage value is too high, the fuel cell system's load current can be increased once or multiple times to reduce the stack's single-chip voltage value to less than or equal to the second voltage value. This effectively reduces the time the stack is at a high potential and avoids the generation of high stack potential, thereby avoiding carbon corrosion of the catalyst, gas diffusion layer, and plate caused by the stack being at a high potential, ensuring the stack's performance, and improving the stack's lifespan and reliability. When the single-chip voltage value is less than the first voltage value, the fuel cell system's load current can be reduced once or multiple times to increase the stack's single-chip voltage value. When the single-chip voltage value is greater than or equal to the first voltage value, the fuel cell system is operated at the reduced load current for a preset first period of time, and then the process returns to the step of setting the fuel cell system's load current to the first current value. In other words, the stack is controlled to operate at its maximum tolerable current for a period of time, thereby enabling the stack to quickly reach a healthy state and reducing system startup time. When the reduced load current is less than or equal to the second current value, and the duration of the single-chip voltage value being less than the first voltage value is greater than the preset second time period, it indicates that there is a problem with the performance of the fuel cell stack and the startup requirements are not met, and the fuel cell system is stopped.

[0079] Corresponding to the above method embodiment, the embodiment of the present application further provides a startup control device for a fuel cell system. Referring to FIG. 2 , the startup control device 200 for the fuel cell system includes:

[0080] The gas introduction module 202 is used to introduce hydrogen and air into the fuel cell stack when the fuel cell system is started;

[0081] A load current setting module 204, configured to set the load current of the fuel cell system to a first current value;

[0082] A single-chip voltage value first judgment module 206 is used to detect the single-chip voltage value of the stack and compare the single-chip voltage value with the first voltage value and the second voltage value, wherein the second voltage value is greater than the first voltage value;

[0083] The fuel cell system startup module 208 is configured to start the fuel cell system when the single-chip voltage value is greater than or equal to the first voltage value and less than or equal to the second voltage value;

[0084] The load current increasing module 210 is configured to increase the load current of the fuel cell system to reduce the single-chip voltage value of the stack when the single-chip voltage value is greater than the second voltage value, and return the single-chip voltage value to the first determining module 206;

[0085] The load current reducing module 212 is configured to reduce the load current of the fuel cell system to increase the single-cell voltage value of the stack when the single-cell voltage value is less than the first voltage value;

[0086] A second single-chip voltage value determination module 214 is configured to detect a single-chip voltage value of the stack and determine whether the single-chip voltage value is less than a first voltage value;

[0087] The load current determination module 216 is configured to determine whether the reduced load current is greater than a second current value when the single chip voltage value is less than the first voltage value; wherein the second current value is less than the first current value;

[0088] The load current reducing module 212 is further configured to reduce the load current of the fuel cell system to increase the single-chip voltage value of the stack when the reduced load current is greater than the second current value, and return the result to the second single-chip voltage value determining module 214;

[0089] The fuel cell system operation module 218 is configured to operate the fuel cell system at the reduced load current for a preset first time period when the single-chip voltage value is greater than or equal to the first voltage value, and return to the load current setting module 204;

[0090] The stop-start module 220 is configured to stop starting the fuel cell system when the reduced load current is less than or equal to the second current value and the duration of the single-chip voltage value being less than the first voltage value is greater than a preset second time period.

[0091] Optionally, the gas introduction module 202 is specifically used to introduce hydrogen into the fuel cell stack and detect the pressure of the hydrogen; when the pressure of the hydrogen reaches a preset pressure, air is introduced into the fuel cell stack.

[0092] Optionally, the startup control device 200 of the fuel cell system further includes:

[0093] The hydrogen tail gas emission module is used to periodically discharge the gas on the hydrogen side of the fuel cell stack before the hydrogen pressure reaches the preset pressure.

[0094] Optionally, the load current increasing module 210 is specifically configured to increase the load current of the fuel cell system according to a preset current difference when the single-chip voltage value is greater than the second voltage value;

[0095] The load current reducing module 212 is configured to reduce the load current of the fuel cell system according to a preset current difference when the single-chip voltage value is less than the first voltage value.

[0096] The specific details of each module or unit in the above device have been described in detail in the corresponding method, so they will not be repeated here.

[0097] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiment of the application, the features and functions of two or more modules or units described above can be concretized in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be concretized.

[0098] In an exemplary embodiment of the present application, an electronic device is further provided, comprising: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to execute the startup control method of the fuel cell system described above in this exemplary embodiment.

[0099] Figure 3 is a schematic diagram of the structure of an electronic device in an embodiment of the present application. It should be noted that the electronic device 300 shown in Figure 3 is only an example and should not bring any limitation to the functions and scope of use of the embodiment of the present application.

[0100] As shown in Figure 3, electronic device 300 includes a central processing unit (CPU) 301, which can perform various appropriate actions and processes according to the program stored in a read-only memory (ROM) 302 or the program loaded from a storage part 308 into a random access memory (RAM) 303. Various programs and data required for system operation are also stored in RAM 303. Central processing unit 301, ROM 302 and RAM 303 are connected to each other via a bus 304. Input / output (I / O) interface 305 is also connected to bus 304.

[0101] The following components are connected to the I / O interface 305: an input section 306 including a keyboard, a mouse, and the like; an output section 307 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 308 including a hard disk; and a communication section 309 including a network interface card such as a local area network (LAN) card or a modem. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to the I / O interface 305 as needed. Removable media 311, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, is installed in the drive 310 as needed, so that computer programs read therefrom can be installed into the storage section 308 as needed.

[0102] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via the communication section 309 and / or installed from a removable medium 311. When the computer program is executed by the central processing unit 301, the various functions defined in the apparatus of the present application are performed.

[0103] In an embodiment of the present application, a computer-readable storage medium is further provided, on which a computer program is stored. When the computer program is executed by a processor, the startup control method of the fuel cell system is implemented.

[0104] It should be noted that the computer-readable storage medium shown in this application can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination thereof. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, device or device. The program code contained on the computer-readable storage medium can be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, radio frequency, etc., or any suitable combination thereof.

[0105] In an embodiment of the present application, a computer program product is further provided. When the computer program product is run on a computer, the computer executes the above-mentioned startup control method of the fuel cell system.

[0106] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0107] The foregoing description is intended only to provide specific embodiments of the present application, which will enable those skilled in the art to understand and implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments described herein, but is intended to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A startup control method for a fuel cell system, characterized in that: include: When the fuel cell system is started, hydrogen and air are introduced into the fuel cell stack; The load current of the fuel cell system is set to a first current value, and a single-chip voltage value of the fuel cell stack is detected, and the single-chip voltage value is compared with the first voltage value and the second voltage value, wherein the second voltage value is greater than the first voltage value; When the single-chip voltage value is greater than or equal to the first voltage value and less than or equal to the second voltage value, starting the fuel cell system; In the case where the single-chip voltage value is greater than the second voltage value, increasing the load current of the fuel cell system to reduce the single-chip voltage value of the stack, and returning to the step of detecting the single-chip voltage value of the stack; When the single-chip voltage value is less than the first voltage value, reducing the load current of the fuel cell system to increase the single-chip voltage value of the stack; Detecting a single-chip voltage value of the battery stack, and determining whether the single-chip voltage value is less than a first voltage value; In the case where the single-chip voltage value is less than the first voltage value, determining whether the reduced load current is greater than a second current value; wherein the second current value is less than the first current value; When the reduced load current is greater than the second current value, reducing the load current of the fuel cell system to increase the single-chip voltage value of the stack, and returning to the step of detecting the single-chip voltage value of the stack and determining whether the single-chip voltage value is less than the first voltage value; When the single-chip voltage value is greater than or equal to the first voltage value, after the fuel cell system is operated at the reduced load current for a preset first period of time, returning to the step of setting the load current of the fuel cell system to the first current value; When the reduced load current is less than or equal to the second current value, and the duration of the single chip voltage value being less than the first voltage value is greater than a preset second time period, the fuel cell system is stopped.

2. The method according to claim 1, characterized in that The step of introducing hydrogen and air into the fuel cell stack comprises: Introduce hydrogen into the fuel cell stack and detect the pressure of hydrogen; When the pressure of hydrogen reaches the preset pressure, air is introduced into the fuel cell stack.

3. The method according to claim 1, characterized in that The method further comprises: Before the pressure of the hydrogen reaches a preset pressure, the gas on the hydrogen side of the fuel cell stack is periodically discharged.

4. The method according to claim 1, characterized in that: Increasing or decreasing the load current of the fuel cell system, comprising: The load current of the fuel cell system is increased or decreased according to a preset current difference.

5. A startup control device for a fuel cell system, characterized in that: The device comprises: A gas supply module is used to supply hydrogen and air to the fuel cell stack when the fuel cell system is started; A load current setting module, used to set the load current of the fuel cell system to a first current value; A first single-chip voltage value judgment module is used to detect the single-chip voltage value of the battery stack, and compare the single-chip voltage value with a first voltage value and a second voltage value, wherein the second voltage value is greater than the first voltage value; A fuel cell system start-up module, used to start the fuel cell system when the single-chip voltage value is greater than or equal to the first voltage value and less than or equal to the second voltage value; A load current increasing module, used for increasing the load current of the fuel cell system to reduce the single-chip voltage value of the stack when the single-chip voltage value is greater than the second voltage value, and returning the single-chip voltage value to the first judgment module; A load current reduction module, used to reduce the load current of the fuel cell system when the single-chip voltage value is less than the first voltage value, so as to increase the single-chip voltage value of the stack; A second single-chip voltage value judgment module, used to detect the single-chip voltage value of the battery stack and judge whether the single-chip voltage value is less than the first voltage value; A load current judgment module is used to judge whether the reduced load current is greater than a second current value when the single chip voltage value is less than the first voltage value; wherein the The second current value is smaller than the first current value; The load current reduction module is further used to reduce the load current of the fuel cell system when the reduced load current is greater than the second current value, so as to increase the single-chip voltage value of the stack, and return the single-chip voltage value to the second judgment module; a fuel cell system operation module, configured to operate the fuel cell system at the reduced load current for a preset first time period when the single chip voltage value is greater than or equal to the first voltage value, and return to the load current setting module; The stop-start module is used to stop starting the fuel cell system when the reduced load current is less than or equal to the second current value and the duration of the single-chip voltage value being less than the first voltage value is greater than a preset second time period.

6. The device according to claim 5, characterized in that The gas introduction module is specifically used to introduce hydrogen into the fuel cell stack and detect the pressure of the hydrogen; when the pressure of the hydrogen reaches a preset pressure, air is introduced into the fuel cell stack.

7. The device according to claim 6, characterized in that The device also includes: The hydrogen tail gas emission module is used to periodically emit the gas on the hydrogen side of the fuel cell stack before the pressure of the hydrogen reaches a preset pressure.

8. The device according to claim 5, characterized in that The load current increasing module is specifically used to increase the load current of the fuel cell system according to a preset current difference when the single chip voltage value is greater than the second voltage value; The load current reduction module is used to reduce the load current of the fuel cell system according to a preset current difference when the single chip voltage value is less than the first voltage value.

9. An electronic device, characterized in that: include: A processor, wherein the processor is used to execute a computer program stored in a memory, wherein the computer program, when executed by the processor, implements the method according to any one of claims 1 to 4.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 4 is implemented.

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