Method for controlling output power of fuel cell engine, vehicle, and storage medium

Abstract

The application discloses a fuel cell engine output power control method, a vehicle and a storage medium. The fuel cell engine output power control method comprises the following steps: obtaining the whole vehicle demand power; controlling the fuel cell engine output power to be the whole vehicle demand power and starting timing; judging whether the output power of the fuel cell engine is less than a first preset threshold value and whether the timing time is greater than a first preset time; when the output power of the fuel cell engine is less than the first preset threshold value and the timing time is greater than the first preset time, obtaining the average power of the power battery within the timing time, and adjusting the output power of the fuel cell engine according to the average power. The technical scheme provided by the application can realize long-time and high-efficiency power output of the fuel cell engine, reduce the hydrogen consumption of the whole vehicle, and further reduce the operation cost of the customer.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a method for controlling the output power of a fuel cell engine, a vehicle, and a storage medium. Background Technology

[0002] Fuel cell engines are widely used in passenger and commercial vehicles. When the vehicle speed changes rapidly, the power demand of the vehicle changes significantly. In order to maintain the power balance of the vehicle's power battery, the output power of the fuel cell engine needs to change significantly.

[0003] However, for vehicles used in certain specific areas (such as port tractors or sanitation vehicles), the vehicle speed is low and the power demand of the vehicle is at a low level for a long time. This causes the fuel cell engine to maintain the same power output for a long time. As the fuel cell stack operates at a low power point for a long time, the membrane electrode drying activity will decrease. Excessive operation time will lead to a decline in the performance of the stack until irreversible changes occur. Summary of the Invention

[0004] This invention provides a method for controlling the output power of a fuel cell engine, a vehicle, and a storage medium, so as to enable the fuel cell engine to output high-efficiency power for a long time, reduce the hydrogen consumption of the whole vehicle, and thus reduce the customer's operating costs.

[0005] In a first aspect, embodiments of the present invention provide a method for controlling the output power of a fuel cell engine, comprising:

[0006] Obtain the required power output for the entire vehicle;

[0007] Control the output power of the fuel cell engine to the required power of the entire vehicle and start timing;

[0008] Determine whether the output power of the fuel cell engine is less than a first preset threshold and whether the timing time is greater than a first preset time;

[0009] When the output power of the fuel cell engine is less than the first preset threshold and the timing time is greater than the first preset time, the average charge of the power battery during the timing time is obtained, and the output power of the fuel cell engine is adjusted according to the average charge.

[0010] Optional, also includes:

[0011] When the output power of the fuel cell engine is greater than or equal to the first preset threshold, and / or the timing time is less than the first preset time, the output power of the fuel cell engine is controlled to remain unchanged.

[0012] Optionally, adjusting the output power of the fuel cell engine based on the average battery charge includes:

[0013] Determine whether the average battery level is greater than a first preset battery level value;

[0014] When the average power level is greater than the first preset power level, the fuel cell engine is shut down.

[0015] When the average energy level is less than or equal to the first preset energy level, the output power of the fuel cell engine is controlled to be a first power, which is greater than the required power of the vehicle.

[0016] Optionally, after controlling the fuel cell engine to shut down, the method further includes:

[0017] Detect the rate of change of the charge of the power battery;

[0018] Determine whether the rate of change of the amount of electricity is greater than a second preset threshold;

[0019] When the rate of change of the power quantity is greater than the second preset threshold, it is further determined whether the power quantity of the power battery at the current moment is less than or equal to the second preset power quantity value, and when it is determined that the power quantity of the power battery at the current moment is less than or equal to the second preset power quantity value, the fuel cell engine is controlled to start running.

[0020] When the rate of change of the power quantity is less than or equal to the second preset threshold, it is further determined whether the power quantity of the power battery at the current moment is less than or equal to the third preset power quantity value. When it is determined that the power quantity of the power battery at the current moment is less than or equal to the third preset power quantity value, the fuel cell engine is controlled to start running.

[0021] The third preset power value is less than the second preset power value.

[0022] Optionally, the ratio of the third preset power value to the second preset power value is less than a, wherein 0.05≤a≤0.25.

[0023] Optionally, after controlling the output power of the fuel cell engine to the first power, the method further includes:

[0024] The power battery level is acquired in real time;

[0025] Determine whether the power battery's charge level is greater than a fourth preset charge level;

[0026] When the charge of the power battery is greater than the fourth preset charge value, the fuel cell engine is controlled to shut down;

[0027] Wherein, the first preset power value is less than the fourth preset power value.

[0028] Optionally, obtain the required power for the entire vehicle, including:

[0029] To obtain the power battery charge and the vehicle speed;

[0030] The required power of the vehicle is determined based on the charge level of the power battery and the vehicle speed.

[0031] Optionally, the first preset threshold is b times the rated power of the fuel cell engine, where 0.2 ≤ b ≤ 0.4.

[0032] In a second aspect, embodiments of the present invention provide a vehicle, including:

[0033] One or more processors;

[0034] Memory, used to store one or more programs;

[0035] When the one or more programs are executed by the one or more processors, the one or more processors implement the fuel cell engine output power control method as described in the first aspect.

[0036] Thirdly, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for controlling the output power of a fuel cell engine as described in the first aspect.

[0037] The solution provided by this invention obtains the required power of the entire vehicle, controls the output power of the fuel cell engine to the required power of the entire vehicle and starts timing, then determines whether the output power of the fuel cell engine is less than a first preset threshold and whether the timing time is greater than a first preset time. When it is determined that the output power of the fuel cell engine is less than the first preset threshold and the timing time is greater than the first preset time, the average charge of the power battery during the timing time is obtained, and the output power of the fuel cell engine is adjusted according to the average charge. This can avoid the problem of the fuel cell engine's output power remaining at the same low power for a long time, which leads to a decrease in the drying activity of the membrane electrode assembly, thereby improving the performance of the fuel cell, reducing the hydrogen consumption of the entire vehicle, and reducing the customer's operating costs.

[0038] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, although the drawings described below are some specific embodiments of the present invention, those skilled in the art can extend and extend the basic concepts of the device structure, driving method and manufacturing method disclosed and indicated by various embodiments of the present invention to other structures and drawings. Undoubtedly, these should all be within the scope of the claims of the present invention.

[0040] Figure 1 A flowchart illustrating a method for controlling the output power of a fuel cell engine, as provided in an embodiment of the present invention;

[0041] Figure 2 A flowchart illustrating another method for controlling the output power of a fuel cell engine provided in an embodiment of the present invention;

[0042] Figure 3 A flowchart illustrating another method for controlling the output power of a fuel cell engine, provided as an embodiment of the present invention;

[0043] Figure 4 A flowchart illustrating another method for controlling the output power of a fuel cell engine, provided as an embodiment of the present invention;

[0044] Figure 5 This is a structural schematic diagram of a vehicle provided in an embodiment of the present invention. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this invention. Obviously, the described embodiments are only some embodiments of this invention, not all embodiments. Based on the basic concepts disclosed and indicated in the embodiments of this invention, all other embodiments obtained by those skilled in the art are within the scope of protection of this invention.

[0046] Figure 1 A flowchart illustrating a method for controlling the output power of a fuel cell engine, as provided in an embodiment of the present invention, is shown below. Figure 1 As shown, the method for controlling the output power of a fuel cell engine specifically includes the following steps:

[0047] S101, Obtain the required power for the entire vehicle.

[0048] S102, Control the output power of the fuel cell engine to the power required by the vehicle and start timing.

[0049] S103. Determine whether the output power of the fuel cell engine is less than the first preset threshold and whether the timing time is greater than the first preset time.

[0050] The specific value of the first preset threshold can be set according to the actual situation.

[0051] S104. When the output power of the fuel cell engine is less than the first preset threshold and the timing time is greater than the first preset time, the average charge of the power battery during the timing time is obtained, and the output power of the fuel cell engine is adjusted according to the average charge.

[0052] The specific value of the first preset time can be set according to the actual situation, and no specific limit is made here.

[0053] Specifically, when the output power of the fuel cell engine is determined to be less than the first preset threshold, it can be considered that the output power of the fuel cell engine is very low. At this time, the timing time of the fuel cell engine continuously outputting low power can be obtained, and it can be determined whether the timing time is greater than the first preset time. If the timing time is greater than the first preset time when the output power of the fuel cell engine is less than the first preset threshold, it means that the output power of the fuel cell engine has been maintained at a low level for a long time. In this way, by obtaining the average charge of the power battery during the timing time, the output power of the fuel cell engine can be adjusted according to the average charge. This avoids the problem of the membrane electrode drying activity decreasing due to the fuel cell engine's output power being maintained at the same low power for a long time, thereby improving the performance of the fuel cell, reducing the hydrogen consumption of the whole vehicle, and reducing the customer's operating costs.

[0054] In this embodiment, by acquiring the required power of the entire vehicle, controlling the output power of the fuel cell engine to be the required power of the entire vehicle and starting the timing, it is then determined whether the output power of the fuel cell engine is less than a first preset threshold and whether the timing time is greater than a first preset time. When it is determined that the output power of the fuel cell engine is less than the first preset threshold and the timing time is greater than the first preset time, the average charge of the power battery during the timing time is acquired. The output power of the fuel cell engine is adjusted according to the average charge. This can avoid the problem of the fuel cell engine's output power remaining at the same low power for a long time, which leads to a decrease in the drying activity of the membrane electrode assembly, thereby improving the performance of the fuel cell, reducing the hydrogen consumption of the entire vehicle, and reducing the customer's operating costs.

[0055] Optional, continue to refer to Figure 1 The method for controlling the output power of a fuel cell engine also includes the following steps:

[0056] S105. When the output power of the fuel cell engine is greater than or equal to the first preset threshold, and / or the timing time is less than the first preset time, the output power of the fuel cell engine is controlled to remain unchanged.

[0057] Specifically, when the output power of the fuel cell engine is greater than or equal to the first preset threshold, it indicates that the output power of the fuel cell engine is at a high level. In this case, regardless of whether the timing period exceeds the first preset time, it will not affect the performance of the fuel cell, thus maintaining the output power of the fuel cell engine at a constant level. Similarly, regardless of whether the output power of the fuel cell engine is less than the first preset threshold, if the timing period is less than the first preset time, it means that the fuel cell engine needs to maintain its output power at the current vehicle power requirement for a shorter period. In this situation, the output power of the fuel cell engine can also be kept constant. That is, when the duration of the fuel cell engine outputting lower power is short, it will not have a significant impact on the performance of the fuel cell. Therefore, when the output power of the fuel cell engine is greater than or equal to the first preset threshold, and / or the timing period is less than the first preset time, the output power of the fuel cell engine can be kept constant.

[0058] Optionally, the first preset threshold is b times the rated power of the fuel cell engine, where 0.2 ≤ b ≤ 0.4.

[0059] Specifically, when the output power of the fuel cell engine is less than b times its rated power, the fuel cell engine can be considered to be in a low-power operating state. Here, b can be any value that satisfies 0.2≤b≤0.4, without specific limitation. For example, b=0.3. In this case, it is necessary to further determine whether the timing time is greater than the first preset time. If the timing time is greater than the first preset time, the output power of the fuel cell engine is adjusted according to the average charge of the current power motor during the timing period to avoid long-term water shortage of the membrane electrode of the fuel cell, which would lead to irreversible performance degradation of the fuel cell engine.

[0060] Optional, Figure 2 A flowchart of another method for controlling the output power of a fuel cell engine provided in an embodiment of the present invention is shown below. Figure 2 As shown, in Figure 1 Based on this, the output power of the fuel cell engine is adjusted according to the average battery charge, including: determining whether the average battery charge is greater than a first preset battery charge value; when the average battery charge is greater than the first preset battery charge value, controlling the fuel cell engine to shut down; when the average battery charge is less than or equal to the first preset battery charge value, controlling the output power of the fuel cell engine to a first power, which is greater than the power required by the vehicle. Therefore, this control method mainly includes the following steps:

[0061] S201, Obtain the required power for the entire vehicle.

[0062] S202, Control the output power of the fuel cell engine to the power required by the vehicle and start timing.

[0063] S203. Determine whether the output power of the fuel cell engine is less than the first preset threshold and whether the timing time is greater than the first preset time.

[0064] S204. When the output power of the fuel cell engine is less than the first preset threshold and the timing time is greater than the first preset time, the average charge of the power battery during the timing time is obtained.

[0065] The sampling time for the power battery charge can be set according to the actual situation, and no specific limit is set here.

[0066] Specifically, during the timing period, the power battery charge at each moment is collected in real time. The average power battery charge during the timing period can be calculated by dividing the sum of the power battery charge at each moment by the number of samples.

[0067] S205. Determine whether the average battery level is greater than the first preset battery level value.

[0068] The specific value of the first preset power level can be set according to the actual situation, and this embodiment of the invention does not impose any specific limitations on it.

[0069] S206. When the average battery charge is greater than the first preset battery charge value, control the fuel cell engine to shut down.

[0070] S207. When the average energy level is less than or equal to the first preset energy level, the output power of the fuel cell engine is controlled to be the first power, which is greater than the power required by the vehicle.

[0071] In this embodiment, after obtaining the average charge of the power battery during the timing period, the average charge can be compared with a first preset charge value to determine whether the average charge maintained by the power battery during the timing period is sufficient. If the average charge is greater than the first preset charge value, it indicates that the power battery has a high charge value. At this time, the fuel cell engine can be shut down, that is, the output power of the fuel cell engine can be controlled to be zero, so that the power battery continues to provide power and ensure the normal operation of the vehicle. If the average charge is less than or equal to the first preset charge value, the output power of the fuel cell engine can be increased from the power required by the vehicle to the first power, so that the power output of the fuel cell engine is used to charge the power battery, improve the performance of the power battery, and avoid the power battery maintaining a low charge for a long time, which would reduce performance.

[0072] Optional, Figure 3A flowchart illustrating another method for controlling the output power of a fuel cell engine provided in an embodiment of the present invention is shown below. Figure 3 As shown, after controlling the fuel cell engine to shut down, the method further includes: detecting the rate of change of the battery charge; determining whether the rate of change of the battery charge is greater than a second preset threshold; when the rate of change of the battery charge is greater than the second preset threshold, further determining whether the current charge of the battery is less than or equal to a second preset charge value, and controlling the fuel cell engine to start running when the current charge of the battery is determined to be less than or equal to the second preset charge value; when the rate of change of the battery charge is less than or equal to the second preset threshold, further determining whether the current charge of the battery is less than or equal to a third preset charge value, and controlling the fuel cell engine to start running when the current charge of the battery is determined to be less than or equal to the third preset charge value; wherein, the third preset charge value is less than the second preset charge value. Therefore, this control method mainly includes the following steps:

[0073] S301, Obtain the required power for the entire vehicle.

[0074] S302, Control the output power of the fuel cell engine to the power required by the vehicle and start timing.

[0075] S303. Determine whether the output power of the fuel cell engine is less than the first preset threshold and whether the timing time is greater than the first preset time.

[0076] S304. When the output power of the fuel cell engine is less than the first preset threshold and the timing time is greater than the first preset time, the average charge of the power battery during the timing time is obtained.

[0077] S305. Determine whether the average battery level is greater than the first preset battery level value.

[0078] S306. When the average battery charge is greater than the first preset battery charge value, control the fuel cell engine to shut down.

[0079] S307, Detect the rate of change of power battery charge.

[0080] Among them, the rate of change of the power battery charge can refer to the rate of change of the power battery charge at any two moments.

[0081] S308. Determine whether the rate of change of power consumption is greater than the second preset threshold.

[0082] The specific value of the second preset threshold can be set according to the actual situation, and the present invention does not impose a specific limitation here.

[0083] S309. When the rate of change of power quantity is greater than the second preset threshold, continue to determine whether the power quantity of the power battery at the current moment is less than or equal to the second preset power quantity value, and when it is determined that the power quantity of the power battery at the current moment is less than or equal to the second preset power quantity value, control the fuel cell engine to start running.

[0084] The specific value of the second preset power level can be set according to the actual situation.

[0085] S310. When the rate of change of power is less than or equal to the second preset threshold, continue to determine whether the power battery's current power is less than or equal to the third preset power value, and when it is determined that the power battery's current power is less than or equal to the third preset power value, control the fuel cell engine to start running; wherein, the third preset power value is less than the second preset power value.

[0086] Specifically, after the fuel cell engine shuts down, the vehicle's operation is powered by the battery. At this time, the rate of change of the battery's charge level can be compared to a second preset threshold. If the rate of change is greater than the second preset threshold, it indicates that the battery's charge is rapidly decreasing. In this case, it can be further determined whether the battery's current charge level is less than or equal to the second preset value. When the battery's charge level drops to less than or equal to the second preset value, the fuel cell engine needs to be restarted to continue meeting the vehicle's power requirements while charging the battery. If the rate of change is less than or equal to the second preset threshold, it indicates that the battery's charge is decreasing slowly. The fuel cell engine can be restarted only after the battery's charge level drops to less than or equal to a third preset value to meet the vehicle's power requirements and charge the battery. It is important to note that the second preset value must be greater than the third preset value; the specific setting can be adjusted according to actual conditions. In this way, by adaptively controlling whether the fuel cell engine starts after it is shut down, based on the rate of change of the power battery's charge and the actual change in the power battery's charge, the reliability and stability of the vehicle's operation can be guaranteed, while also preventing the fuel cell engine from running in a low output power range for a long time, thus improving the performance of the fuel cell.

[0087] Optionally, the ratio of the third preset power value to the second preset power value is less than a, where 0.05≤a≤0.25.

[0088] Specifically, the values ​​of the third preset energy value and the second preset energy value can be set according to the actual situation. By setting the ratio of the third preset energy value to the second preset energy value to be less than a, where a can be any value that satisfies 0.05≤a≤0.25, there is no specific limitation here. For example, a=0.1 can ensure that after the fuel cell engine is turned off, no matter how large the rate of change of the power battery's charge is, the fuel cell engine can be quickly restarted after the power battery's charge drops to a certain range, thereby ensuring the stability of the vehicle's operation.

[0089] S311. When the average energy level is less than or equal to the first preset energy level, the output power of the fuel cell engine is controlled to be the first power, which is greater than the power required by the vehicle.

[0090] Optional, continue to refer to Figure 3 After controlling the output power of the fuel cell engine to the first power, the following steps are also included:

[0091] S312: Real-time acquisition of the power battery's charge level.

[0092] S313. Determine whether the power battery charge is greater than the fourth preset charge value.

[0093] S314. When the power battery charge is greater than the fourth preset charge value, control the fuel cell engine to shut down; wherein the first preset charge value is less than the fourth preset charge value.

[0094] The specific value of the fourth preset power level can be set according to the actual situation, and no specific limit is set here.

[0095] In this embodiment, after controlling the output power of the fuel cell engine to increase from the power required by the vehicle to the first power, the output power of the fuel cell engine can meet the power required by the vehicle while also charging the power battery. At this time, the change in the power battery charge can be detected by acquiring the power battery charge in real time, and it can be determined whether the power battery charge is greater than the fourth preset charge value. When the power battery charge is greater than the fourth preset charge value, it can be determined that the power battery charge is relatively high. In this way, the fuel cell engine can be shut down, and only the power battery provides power for the normal operation of the vehicle.

[0096] Optional, Figure 4 A flowchart illustrating another method for controlling the output power of a fuel cell engine provided in an embodiment of the present invention is shown below. Figure 4 As shown, in Figure 1 Based on this, the required power for the entire vehicle is obtained, including: obtaining the battery charge and the vehicle speed; and determining the required power for the entire vehicle based on the battery charge and vehicle speed. Therefore, this control method mainly includes the following steps:

[0097] S401: Obtain the power battery charge and the vehicle speed.

[0098] S402. Determine the required power of the entire vehicle based on the battery charge and vehicle speed.

[0099] S403, control the output power of the fuel cell engine to the power required by the vehicle and start timing.

[0100] S404. Determine whether the output power of the fuel cell engine is less than the first preset threshold and whether the timing time is greater than the first preset time.

[0101] S405. When the output power of the fuel cell engine is less than the first preset threshold and the timing time is greater than the first preset time, the average charge of the power battery during the timing time is obtained, and the output power of the fuel cell engine is adjusted according to the average charge.

[0102] In this embodiment, after the vehicle starts running, the required power of the vehicle can be determined by obtaining the current power battery charge and the vehicle speed. The specific calculation method can adopt existing methods and is not specifically limited here. After controlling the output power of the fuel cell engine to be the required power of the vehicle, in order to avoid the fuel cell engine running at a low output power for a long time, it is necessary to further determine whether the output power is less than a first preset threshold and whether the timing time is greater than a first preset time. When it is determined that the output power of the fuel cell engine is less than the first preset threshold and the timing time is greater than the first preset time, the average charge of the power battery during the timing time is obtained. Then, the output power of the fuel cell engine is adjusted according to the average charge. This avoids the problem of the membrane electrode drying activity decreasing due to the fuel cell engine output power remaining at the same low power for a long time, thereby improving the performance of the fuel cell, reducing the hydrogen consumption of the vehicle, and reducing the customer's operating costs.

[0103] Based on the same inventive concept, this embodiment also provides a vehicle. Figure 5 This is a schematic diagram of the structure of a vehicle provided in an embodiment of the present invention, such as... Figure 5 As shown, the vehicle includes a processor 510, a memory 520, an input device 530, and an output device 540; the number of processors 510 in the vehicle can be one or more, and the processors 510, memory 520, input devices 530, and output devices 540 in the vehicle can be connected by a bus or other means.

[0104] The memory 520, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the program instructions or modules corresponding to the fuel cell engine output power control method in this embodiment of the invention. The processor 510 executes various vehicle functions and data processing by running the software programs, instructions, and modules stored in the memory 520, thereby realizing the aforementioned fuel cell engine output power control method.

[0105] The memory 520 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on terminal usage. Furthermore, the memory 520 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 520 may further include memory remotely located relative to the processor 510, which can be connected to the vehicle via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0106] Input device 530 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the vehicle. Output device 540 may include display devices such as a display screen.

[0107] This invention also provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the fuel cell engine output power control method provided in any of the above embodiments.

[0108] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0109] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for controlling the output power of a fuel cell engine, characterized in that, include: Obtain the required power output for the entire vehicle; Control the output power of the fuel cell engine to the required power of the entire vehicle and start timing; Determine whether the output power of the fuel cell engine is less than a first preset threshold and whether the timing time is greater than a first preset time; When the output power of the fuel cell engine is less than the first preset threshold and the timing time is greater than the first preset time, the average charge of the power battery during the timing time is obtained, and the output power of the fuel cell engine is adjusted according to the average charge. Adjusting the output power of the fuel cell engine based on the average battery charge includes: determining whether the average battery charge is greater than a first preset battery charge value; when the average battery charge is greater than the first preset battery charge value, controlling the fuel cell engine to shut down; when the average battery charge is less than or equal to the first preset battery charge value, controlling the output power of the fuel cell engine to a first power, wherein the first power is greater than the required power of the vehicle. The average battery power is obtained by collecting the battery power at multiple times within the time period, and calculating the average battery power based on the sum of the battery power at multiple times and the number of samples.

2. The method for controlling the output power of a fuel cell engine according to claim 1, characterized in that, Also includes: When the output power of the fuel cell engine is greater than or equal to the first preset threshold, and / or the timing time is less than the first preset time, the output power of the fuel cell engine is controlled to remain unchanged.

3. The method for controlling the output power of a fuel cell engine according to claim 1, characterized in that, After shutting down the fuel cell engine, the following is also included: Detect the rate of change of the charge of the power battery; Determine whether the rate of change of the amount of electricity is greater than a second preset threshold; When the rate of change of the power quantity is greater than the second preset threshold, it is further determined whether the power quantity of the power battery at the current moment is less than or equal to the second preset power quantity value, and when it is determined that the power quantity of the power battery at the current moment is less than or equal to the second preset power quantity value, the fuel cell engine is controlled to start running. When the rate of change of the power quantity is less than or equal to the second preset threshold, it is further determined whether the power quantity of the power battery at the current moment is less than or equal to the third preset power quantity value. When it is determined that the power quantity of the power battery at the current moment is less than or equal to the third preset power quantity value, the fuel cell engine is controlled to start running. The third preset power value is less than the second preset power value.

4. The method for controlling the output power of a fuel cell engine according to claim 3, characterized in that, The ratio of the third preset power value to the second preset power value is less than a, wherein 0.05≤a≤0.

25.

5. The method for controlling the output power of a fuel cell engine according to claim 1, characterized in that, After controlling the output power of the fuel cell engine to a first power, the method further includes: The power battery level is acquired in real time; Determine whether the power battery's charge level is greater than a fourth preset charge level; When the charge of the power battery is greater than the fourth preset charge value, the fuel cell engine is controlled to shut down; Wherein, the first preset power value is less than the fourth preset power value.

6. The method for controlling the output power of a fuel cell engine according to claim 1, characterized in that, Obtain the required power output for the entire vehicle, including: To obtain the power battery charge and the vehicle speed; The required power of the vehicle is determined based on the charge level of the power battery and the vehicle speed.

7. The method for controlling the output power of a fuel cell engine according to claim 1, characterized in that, The first preset threshold is b times the rated power of the fuel cell engine, where 0.2 ≤ b ≤ 0.

4.

8. A vehicle, characterized in that, include: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method for controlling the output power of the fuel cell engine as described in any one of claims 1-7.

9. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the method for controlling the output power of a fuel cell engine as described in any one of claims 1-7.

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