Fuel cell purge control method, apparatus, device, and readable storage medium

Abstract

The application provides a fuel cell purging control method, device, equipment and readable storage medium. The fuel cell purging control method comprises the following steps: if the ambient temperature is lower than a first preset temperature, when it is detected that the fuel cell is stopped, the current vehicle speed is obtained; if the current vehicle speed is greater than a preset vehicle speed, a pressure loss purging mode is used to purge the stack of the fuel cell; if the current vehicle speed is not greater than the preset vehicle speed, whether the power battery can continue to supply power alone is detected according to the residual power of the power battery and the power consumption of the vehicle; if yes, when it is detected that the vehicle is powered off, a mixed gas purging mode is used to purge the stack of the fuel cell; and if no, the pressure loss purging mode is used to purge the stack of the fuel cell. Through the application, the stack of the fuel cell can be effectively purged at low temperature, and the energy consumption can be better saved, so that the balance of the energy consumption economy of the whole vehicle is better achieved.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and in particular to a fuel cell purging control method, apparatus, device, and readable storage medium. Background Technology

[0002] A fuel cell system is a device that uses hydrogen as fuel to produce electricity through a chemical reaction with air. It mainly consists of a hydrogen supply system, an air supply system, a fuel cell stack, an exhaust system, and a cooling system. During operation, the reaction product of a fuel cell system is water. Water residue inside the fuel cell stack can affect its output efficiency and, at low temperatures, may even cause icing, preventing the fuel cell system from starting.

[0003] Purging refers to purging a large amount of air into the fuel cell stack to reduce the water content of the stack and blow away residual reactant gases. Purging removes water and reduces the humidity of the stack, which is particularly important for the operation of the fuel cell system, especially at low temperatures where thorough water removal is required to prevent freezing. However, purging the fuel cell stack also incurs certain energy consumption. Current purging strategies are not reasonable enough, resulting in high energy consumption and low overall vehicle economy. Summary of the Invention

[0004] The main objective of this invention is to provide a fuel cell purging control method, apparatus, device, and readable storage medium, aiming to solve the technical problem that purging the fuel cell stack also leads to a certain amount of energy consumption. The current purging strategy is not reasonable enough, resulting in high energy consumption and low overall vehicle economy.

[0005] In a first aspect, the present invention provides a fuel cell purging control method, the fuel cell purging control method comprising:

[0006] If the ambient temperature is lower than the first preset temperature, the current vehicle speed will be obtained when the fuel cell shutdown is detected.

[0007] If the current vehicle speed is greater than the preset vehicle speed, the depressurization purging mode is used to purge the fuel cell stack.

[0008] If the current vehicle speed is not greater than the preset vehicle speed, then based on the remaining charge of the power battery and the vehicle's power consumption, it is determined whether the power battery can continue to supply power independently.

[0009] If so, when the vehicle is detected to be powered down, the fuel cell stack is purged using a mixed-gas purging mode.

[0010] If not, the underpressure purging mode is used to purge the fuel cell stack.

[0011] Optionally, if not, after purging the fuel cell stack using the depressurization purging mode, the process includes:

[0012] After the vehicle is powered off, monitor the temperature of the fuel cell;

[0013] Based on the temperature changes of the fuel cell, an air purging mode is used to purge the fuel cell stack.

[0014] Optionally, the step of purging the fuel cell stack using an air purging mode based on the temperature change of the fuel cell includes:

[0015] When the temperature of the fuel cell is detected to drop to the second preset temperature, the fuel cell stack is purged using the air purging mode.

[0016] When the temperature of the fuel cell is detected to drop to the third preset temperature, the air purging mode is used again to purge the fuel cell stack. The third preset temperature is lower than the second preset temperature.

[0017] Optionally, before purging the fuel cell stack using the mixed gas purging mode, the following steps are included:

[0018] The purging duration of the mixed gas purging mode is determined based on the ambient temperature.

[0019] Optionally, determining the purging duration of the mixed gas purging mode based on the ambient temperature includes:

[0020] When the ambient temperature is higher than or equal to the fourth preset temperature, the purging time of the mixed gas purging mode is determined to be the first preset purging time.

[0021] When the ambient temperature is lower than the fourth preset temperature, the purging time of the mixed gas purging mode is determined to be the second preset purging time, which is greater than the first preset purging time.

[0022] In a second aspect, the present invention also provides a fuel cell purging control device, the fuel cell purging control device comprising:

[0023] The acquisition module is used to acquire the current vehicle speed when the fuel cell shutdown is detected if the ambient temperature is lower than the first preset temperature.

[0024] The first purging module is used to purge the fuel cell stack using the depressurization purging mode if the current vehicle speed is greater than the preset vehicle speed.

[0025] The detection module is used to detect whether the power battery can continue to supply power independently, based on the remaining power of the power battery and the vehicle's power consumption, if the current vehicle speed is not greater than the preset vehicle speed.

[0026] The second purging module is used to purge the fuel cell stack using a mixed gas purging mode when the vehicle is detected to be powered down.

[0027] The third purging module is used to purge the fuel cell stack in the event of a pressure failure purging mode.

[0028] Optionally, the fuel cell purging control device further includes a power-off monitoring module, used for:

[0029] After the vehicle is powered off, monitor the temperature of the fuel cell;

[0030] Based on the temperature changes of the fuel cell, an air purging mode is used to purge the fuel cell stack.

[0031] Optionally, the fuel cell purging control device further includes a purging duration determination module, used for:

[0032] The purging duration of the mixed gas purging mode is determined based on the ambient temperature.

[0033] Thirdly, the present invention also provides a fuel cell purging control device, the fuel cell purging control device including a processor, a memory, and a fuel cell purging control program stored in the memory and executable by the processor, wherein when the fuel cell purging control program is executed by the processor, the steps of the fuel cell purging control method as described above are implemented.

[0034] Fourthly, the present invention also provides a readable storage medium storing a fuel cell purging control program, wherein when the fuel cell purging control program is executed by a processor, it implements the steps of the fuel cell purging control method as described above.

[0035] In this invention, if the ambient temperature is lower than a first preset temperature, when the fuel cell shutdown is detected, the current vehicle speed is obtained; if the current vehicle speed is greater than the preset vehicle speed, the depressurization purging mode is used to purge the fuel cell stack; if the current vehicle speed is not greater than the preset vehicle speed, the remaining power of the power battery and the vehicle's power consumption are used to detect whether the power battery can continue to supply power independently; if so, when the vehicle power is detected to be off, the mixed gas purging mode is used to purge the fuel cell stack; if not, the depressurization purging mode is used to purge the fuel cell stack. This invention addresses the issue of fuel cell system shutdown in low ambient temperatures by selecting an appropriate purging mode based on vehicle speed, remaining battery power capacity, and vehicle power-off status. First, the current vehicle speed is detected. If the current speed exceeds a preset speed, it's determined that the fuel cell has only temporarily stopped and will restart, thus employing a depressurization purging mode for rapid purging. If the current speed is below the preset speed, only the fuel cell is shut down, while the vehicle remains powered by the battery. Further testing checks whether the remaining battery power can continue to supply power independently to support the vehicle's energy consumption. If the test indicates it can, monitoring continues. When the vehicle is detected to be power-off, a mixed-gas purging is performed for better dehumidification. If the test indicates it cannot support the fuel cell, it means the fuel cell will restart, and a depressurization purging mode is executed for rapid purging. This approach effectively purifies the fuel cell stack at low temperatures while simultaneously saving energy, achieving a better balance in overall vehicle energy efficiency. Attached Figure Description

[0036] Figure 1 This is a schematic flowchart of an embodiment of the fuel cell purging control method of the present invention;

[0037] Figure 2 This is a schematic diagram of the power-off monitoring process of an embodiment of the fuel cell purging control method of the present invention;

[0038] Figure 3 for Figure 2 A detailed flowchart of step S70;

[0039] Figure 4 This is a functional module diagram of an embodiment of the fuel cell purging control device of the present invention;

[0040] Figure 5 This is a schematic diagram of the hardware structure of an embodiment of the fuel cell purging control device of the present invention.

[0041] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0043] In a first aspect, embodiments of the present invention provide a fuel cell purging control method.

[0044] To more clearly demonstrate the fuel cell purging control method provided in the embodiments of this application, we will first introduce the application scenarios of the fuel cell purging control method provided in the embodiments of this application.

[0045] The fuel cell purging control method provided in this application is applied when the fuel cell system is working. The reaction product is water, and the water remaining in the stack will affect its output efficiency. At low temperatures, it may also cause icing, which will prevent the fuel cell system from starting. Therefore, the fuel cell needs to be purged to reduce the water content of the stack and blow away the residual reaction gas.

[0046] In one embodiment, reference is made to Figure 1 , Figure 1 This is a schematic flowchart of an embodiment of the fuel cell purging control method of the present invention, as shown below. Figure 1 As shown, the fuel cell purging control method includes:

[0047] Step S10: If the ambient temperature is lower than the first preset temperature, the current vehicle speed is obtained when the fuel cell is detected to have stopped.

[0048] In this embodiment, the main focus is on the shutdown and purging of fuel cells in low-temperature environments. Residual moisture in the fuel cell stack can affect the output efficiency of the fuel cell and may also cause icing at low temperatures, preventing the fuel cell system from starting. The first preset temperature is, for example, 0 degrees Celsius. Therefore, it is required to thoroughly remove water from the fuel cell to prevent freezing. When the fuel cell system shutdown is detected, the current vehicle speed is further obtained to make a judgment based on the current vehicle speed and select an appropriate purging mode.

[0049] Step S20: If the current vehicle speed is greater than the preset vehicle speed, the depressurization purging mode is used to purge the fuel cell stack.

[0050] In this embodiment, the preset vehicle speed is, for example, 0 or a very low speed. When the current vehicle speed is greater than the preset speed, it indicates that the vehicle is still operating at a low speed or idling. Therefore, it is determined that the fuel cell system is only temporarily shut down and will restart later. Thus, the depressurization purging mode is used to quickly purge the fuel cell stack. The depressurization purging mode refers to suddenly reducing the air intake of the air compressor during operation. Under this condition, a brief negative pressure will be created. When the gas pressure decreases, more water vapor will dissolve, thereby removing more moisture. The advantages of the depressurization purging mode are high speed and low energy consumption. However, the depressurization purging mode also requires the internal components of the stack to have high mechanical strength. Under the depressurization purging mode, the pressure difference may cause damage to the internal components.

[0051] Step S30: If the current vehicle speed is not greater than the preset vehicle speed, then based on the remaining power of the power battery and the vehicle's power consumption, detect whether the power battery can continue to supply power independently.

[0052] In this embodiment, if the current vehicle speed is not greater than the preset vehicle speed, it means that the vehicle is in a stopped state or running at a low speed. At this time, although the fuel cell is shut down, the vehicle is still in a powered-on state, and the power battery supplies power to the vehicle alone. Further detection is needed to determine whether the remaining power of the power battery can continue to supply power to support the vehicle's power consumption. It should be noted that the vehicle's power consumption includes the power consumption of related systems such as the vehicle's air conditioning.

[0053] Step S40: If yes, when the vehicle is detected to be powered down, the fuel cell stack is purged using a mixed gas purging mode.

[0054] In this embodiment, if the remaining power of the power battery can continue to supply power independently to support the vehicle's power consumption, the vehicle's status is continuously monitored until the vehicle is detected to be powered down. Then, a mixed gas purging mode is used to purge the fuel cell stack. The mixed gas can be air mixed with hydrogen, which can have a better dehumidification effect. Through the control of the air compressor and hydrogen circulation pump, the amount of hydrogen is gradually reduced during the purging process, so as to reduce the energy consumption of hydrogen while ensuring a better dehumidification effect.

[0055] Step S50: If not, use the depressurization purging mode to purge the fuel cell stack.

[0056] In this embodiment, if the remaining power of the power battery cannot continue to supply power to support the vehicle's electrical energy consumption, it means that the fuel cell system still needs to be started. Therefore, the underpressure purging mode is used to quickly purge the fuel cell stack.

[0057] In this embodiment, when the fuel cell system is shut down and the ambient temperature is low, such as 0 degrees Celsius or below, if the fuel cell stack contains moisture, it is prone to freezing. Based on the vehicle speed, the remaining power supply capacity of the power battery, and the vehicle's power-off state, an appropriate purging mode is selected. First, the current vehicle speed is detected. If the current vehicle speed is greater than the preset speed, it is determined that the fuel cell is only temporarily shut down and will restart later. Therefore, the depressurization purging mode is used for rapid purging. If the current vehicle speed is not greater than the preset speed, only the fuel cell is shut down, and the vehicle is still powered by the power battery. Further detection is performed to see if the remaining power battery can continue to supply power independently to support the vehicle's energy consumption. If the detection determines that it can support the vehicle's energy consumption, monitoring continues. When the vehicle is detected to be powered off, a mixed gas purging is performed for better dehumidification. If the detection determines that it cannot support the vehicle's energy consumption, it means that the fuel cell will restart. In this case, the depressurization purging mode is performed for rapid purging. Thus, at low temperatures, the fuel cell stack can be effectively purged, and energy consumption can be better saved, achieving a better balance in the overall vehicle energy economy.

[0058] Furthermore, in one embodiment, reference is made to Figure 2 , Figure 2 This is a schematic diagram of the power-off monitoring process of an embodiment of the fuel cell purging control method of the present invention, as shown below. Figure 2 As shown, after step S50, the following steps are included:

[0059] Step S60: After the vehicle is powered off, monitor the temperature of the fuel cell;

[0060] Step S70: Based on the temperature change of the fuel cell, the fuel cell stack is purged using an air purging mode.

[0061] In this embodiment, when the ambient temperature is low, the temperature of the fuel cell will drop after the vehicle is powered off. The temperature of the fuel cell is monitored. If the temperature of the fuel cell drops to a low level, there may be a risk of water vapor freezing. An air purging mode is used to purge the fuel cell stack to thoroughly dry the moisture and prevent freezing.

[0062] Furthermore, in one embodiment, reference is made to Figure 3 , Figure 3 for Figure 2 A detailed flowchart of step S70 is shown below. Figure 3 As shown, step S70 includes:

[0063] Step S701: When the temperature of the fuel cell is detected to drop to the second preset temperature, the fuel cell stack is purged using an air purging mode.

[0064] Step S702: When the temperature of the fuel cell is detected to drop to the third preset temperature, the air purging mode is used again to purge the fuel cell stack. The third preset temperature is lower than the second preset temperature.

[0065] In this embodiment, when the temperature of the fuel cell is detected to drop to the second preset temperature, the air purging mode is used to purge the fuel cell stack once to dry the moisture. When the temperature of the fuel cell is detected to continue to drop to the third preset temperature, if there is moisture in the stack, the risk of freezing is very high. Therefore, the air purging mode is used again to thoroughly dry the fuel cell stack. After that, the monitoring can be stopped and the vehicle can wait for the next start.

[0066] Further, in one embodiment, before step S40, the following steps are included:

[0067] The purging duration of the mixed gas purging mode is determined based on the ambient temperature.

[0068] In this embodiment, the purging time of the mixed gas purging mode is determined according to the ambient temperature. The lower the ambient temperature, the longer the purging time, so as to better dry the moisture in the fuel cell and prevent freezing.

[0069] Furthermore, in one embodiment, determining the purging duration of the mixed gas purging mode based on the ambient temperature includes:

[0070] When the ambient temperature is higher than or equal to the fourth preset temperature, the purging time of the mixed gas purging mode is determined to be the first preset purging time.

[0071] When the ambient temperature is lower than the fourth preset temperature, the purging time of the mixed gas purging mode is determined to be the second preset purging time, which is greater than the first preset purging time.

[0072] In this embodiment, when the vehicle is powered off, the mixture purging is performed. If the ambient temperature is higher than or equal to the fourth preset temperature, the duration of the mixture purging is the first preset purging duration. If the ambient temperature is lower than the fourth preset duration, the mixture purging duration is extended to the second preset purging duration.

[0073] Secondly, embodiments of the present invention also provide a fuel cell purging control device.

[0074] Reference Figure 4 , Figure 4 This is a functional module diagram of an embodiment of the fuel cell purging control device of the present invention.

[0075] In this embodiment, the fuel cell purging control device includes:

[0076] The acquisition module 10 is used to acquire the current vehicle speed when the fuel cell is detected to have stopped if the ambient temperature is lower than the first preset temperature.

[0077] The first purging module 20 is used to purge the fuel cell stack using the depressurization purging mode if the current vehicle speed is greater than the preset vehicle speed.

[0078] The detection module 30 is used to detect whether the power battery can continue to supply power independently, based on the remaining power of the power battery and the vehicle's power consumption, if the current vehicle speed is not greater than the preset vehicle speed.

[0079] The second purging module 40 is used to purge the fuel cell stack using a mixed gas purging mode when the vehicle power is detected to be off.

[0080] The third purging module 50 is used to purge the fuel cell stack in the underpressure purging mode if not.

[0081] Furthermore, in one embodiment, the fuel cell purging control device further includes a power-off monitoring module, comprising:

[0082] The monitoring unit is used to monitor the temperature of the fuel cell after the vehicle is powered off;

[0083] The purging unit is used to purge the fuel cell stack using an air purging mode based on the temperature changes of the fuel cell.

[0084] Furthermore, in one embodiment, the purging unit is used for:

[0085] When the temperature of the fuel cell is detected to drop to the second preset temperature, the fuel cell stack is purged using the air purging mode.

[0086] When the temperature of the fuel cell is detected to drop to the third preset temperature, the air purging mode is used again to purge the fuel cell stack. The third preset temperature is lower than the second preset temperature.

[0087] Furthermore, in one embodiment, the fuel cell purging control device further includes a purging duration determination module, comprising:

[0088] The purging duration determination unit is used to determine the purging duration of the mixed gas purging mode based on the ambient temperature.

[0089] Furthermore, in one embodiment, the purging duration determination unit is used for:

[0090] When the ambient temperature is higher than or equal to the fourth preset temperature, the purging time of the mixed gas purging mode is determined to be the first preset purging time.

[0091] When the ambient temperature is lower than the fourth preset temperature, the purging time of the mixed gas purging mode is determined to be the second preset purging time, which is greater than the first preset purging time.

[0092] The functions of each module in the aforementioned fuel cell purging control device correspond to the steps in the aforementioned fuel cell purging control method embodiment, and their functions and implementation processes will not be described in detail here.

[0093] Thirdly, embodiments of the present invention provide a fuel cell purging control device, which can be a device with data processing capabilities such as a personal computer (PC), a laptop computer, or a server.

[0094] Reference Figure 5 , Figure 5 This is a schematic diagram of the hardware structure of an embodiment of the fuel cell purging control device of the present invention. In this embodiment, the fuel cell purging control device may include a processor 1001 (e.g., a Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize communication between these components; the user interface 1003 may include a display screen or an input unit such as a keyboard; the network interface 1004 may optionally include a standard wired interface or a wireless interface (e.g., Wireless Fidelity, Wi-Fi); the memory 1005 may be high-speed random access memory (RAM) or stable memory (non-volatile memory), such as a disk storage device. Alternatively, the memory 1005 may also be a storage device independent of the aforementioned processor 1001. Those skilled in the art will understand that… Figure 5 The hardware structure shown does not constitute a limitation of the invention and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0095] Continue to refer to Figure 5 , Figure 5 The memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a fuel cell purging control program. The processor 1001 can call the fuel cell purging control program stored in the memory 1005 and execute the fuel cell purging control method provided in this embodiment of the invention.

[0096] Fourthly, embodiments of the present invention also provide a readable storage medium.

[0097] The present invention provides a fuel cell purging control program stored on a readable storage medium, wherein when the fuel cell purging control program is executed by a processor, the steps of the fuel cell purging control method described above are implemented.

[0098] The method implemented when the fuel cell purging control program is executed can be referred to in various embodiments of the fuel cell purging control method of the present invention, and will not be repeated here.

[0099] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0100] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0101] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of the present invention.

[0102] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A fuel cell purging control method, characterized in that, The fuel cell purging control method includes: If the ambient temperature is lower than the first preset temperature, the current vehicle speed is obtained when the fuel cell shutdown is detected; wherein, the first preset temperature is 0°C. If the current vehicle speed is greater than the preset vehicle speed, the depressurization purging mode is used to purge the fuel cell stack; wherein, the preset vehicle speed is 0 km / h; If the current vehicle speed is not greater than the preset vehicle speed, then based on the remaining charge of the power battery and the vehicle's power consumption, it is determined whether the power battery can continue to supply power independently. If so, when the vehicle is detected to be powered down, the fuel cell stack is purged using a mixed-gas purging mode. If not, the underpressure purging mode is used to purge the fuel cell stack.

2. The fuel cell purging control method as described in claim 1, characterized in that, If not, then after purging the fuel cell stack using the depressurization purging mode, the process includes: After the vehicle is powered off, monitor the temperature of the fuel cell; Based on the temperature changes of the fuel cell, an air purging mode is used to purge the fuel cell stack.

3. The fuel cell purging control method as described in claim 2, characterized in that, The step of purging the fuel cell stack using an air purging mode based on the temperature change of the fuel cell includes: When the temperature of the fuel cell is detected to drop to the second preset temperature, the fuel cell stack is purged using the air purging mode. When the temperature of the fuel cell is detected to drop to the third preset temperature, the air purging mode is used again to purge the fuel cell stack. The third preset temperature is lower than the second preset temperature.

4. The fuel cell purging control method as described in claim 1, characterized in that, Before purging the fuel cell stack using the mixed gas purging mode, the following steps are included: The purging duration of the mixed gas purging mode is determined based on the ambient temperature.

5. The fuel cell purging control method as described in claim 4, characterized in that, The determination of the purging duration for the mixed gas purging mode based on ambient temperature includes: When the ambient temperature is higher than or equal to the fourth preset temperature, the purging time of the mixed gas purging mode is determined to be the first preset purging time. When the ambient temperature is lower than the fourth preset temperature, the purging time of the mixed gas purging mode is determined to be the second preset purging time, which is greater than the first preset purging time.

6. A fuel cell purging control device, characterized in that, The fuel cell purging control device includes: The acquisition module is used to acquire the current vehicle speed when the fuel cell shutdown is detected if the ambient temperature is lower than a first preset temperature; wherein the first preset temperature is 0°C. The first purging module is used to purge the fuel cell stack using a depressurization purging mode if the current vehicle speed is greater than a preset vehicle speed; wherein the preset vehicle speed is 0 km / h. The detection module is used to detect whether the power battery can continue to supply power independently, based on the remaining power of the power battery and the vehicle's power consumption, if the current vehicle speed is not greater than the preset vehicle speed. The second purging module is used to purge the fuel cell stack using a mixed gas purging mode when the vehicle is detected to be powered down. The third purging module is used to purge the fuel cell stack in the event of a pressure failure purging mode.

7. The fuel cell purging control device as described in claim 6, characterized in that, The fuel cell purging control device also includes a power-off monitoring module, used for: After the vehicle is powered off, monitor the temperature of the fuel cell; Based on the temperature changes of the fuel cell, an air purging mode is used to purge the fuel cell stack.

8. The fuel cell purging control device as described in claim 6, characterized in that, The fuel cell purging control device further includes a purging duration determination module, used for: The purging duration of the mixed gas purging mode is determined based on the ambient temperature.

9. A fuel cell purging control device, characterized in that, The fuel cell purging control device includes a processor, a memory, and a fuel cell purging control program stored in the memory and executable by the processor, wherein when the fuel cell purging control program is executed by the processor, it implements the steps of the fuel cell purging control method as described in any one of claims 1 to 5.

10. A readable storage medium, characterized in that, The readable storage medium stores a fuel cell purging control program, wherein when the fuel cell purging control program is executed by a processor, it implements the steps of the fuel cell purging control method as described in any one of claims 1 to 5.

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