Control Method and Device for Power System of Fuel Cell Vehicle

Abstract

The present invention relates to the technical field of new energy vehicle, and particularly to a control method for a power system of a fuel cell vehicle. The method includes: during the driving process of the vehicle, obtaining the driving parameters of the vehicle, wherein the driving parameters include the driving power of the vehicle and the current state of charge of the super capacitor of the vehicle; judging the driving parameters; if the driving power is greater than the set output power of the fuel cell of the vehicle, and the current state of charge is greater than the rated state of charge of the super capacitor, then controlling the super capacitor and the fuel cell to provide driving force, and controlling the power battery of the vehicle to provide auxiliary electric energy. This method realizes enriching the power sources of the fuel cell vehicle, optimizing the power system of the fuel cell vehicle and the management of the energy of the whole vehicle, improving the power performance and control efficiency of the fuel cell vehicle, prolonging the service life of the power system, and improving the response ability of the fuel cell vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and particularly to a control method and device for a power system of a fuel cell vehicle. Background Art

[0002] The power system of a fuel cell is one of the main cores in the research and development of fuel cell vehicles. The existing power system of a fuel cell vehicle includes a fuel cell and a power lithium battery. During the use of a fuel cell vehicle, as an auxiliary energy source, the power battery will be charged and discharged frequently, so that the service life of the power battery is shortened rapidly, resulting in a problem of poor power performance of the fuel cell vehicle. Summary of the Invention

[0003] By providing a control method and device for a power system of a fuel cell vehicle in an embodiment of the present application, the technical problem of poor power performance of a fuel cell vehicle in the prior art is solved, and technical effects such as enriching the power sources of a fuel cell vehicle, optimizing the power system of a fuel cell vehicle and the management of the energy of the whole vehicle, improving the power performance and control efficiency of a fuel cell vehicle, extending the service life of the power system, and improving the response ability of a fuel cell vehicle are achieved.

[0004] In a first aspect, an embodiment of the present invention provides a control method for a power system of a fuel cell vehicle, including:

[0005] During the driving process of the whole vehicle, obtain the driving parameters of the whole vehicle, where the driving parameters include the driving power of the whole vehicle and the current state of charge of the super capacitor of the whole vehicle;

[0006] Judge the driving parameters;

[0007] If the driving power is greater than the set output power of the fuel cell of the whole vehicle, and the current state of charge is greater than the rated state of charge of the super capacitor, then control the super capacitor and the fuel cell to provide driving force, and control the power battery of the whole vehicle to provide auxiliary electric energy.

[0008] Preferably, after judging the driving parameters, it further includes:

[0009] If the driving power is greater than the set output power, and the current state of charge is not greater than the rated state of charge, then control the fuel cell and the power battery to provide driving force, and control the super capacitor to be in a standby state.

[0010] Preferably, after judging the driving parameters, it further includes:

[0011] If the driving power is not greater than the set output power, control the fuel cell to provide driving force, and control the super capacitor and the power battery to be in a standby state.

[0012] Preferably, the driving parameter includes a driving power growth rate, where the driving power growth rate is the growth rate of the driving power;

[0013] After judging the driving parameter, it further includes:

[0014] If the driving power growth rate is not greater than the growth rate of the output power of the fuel cell, and the current state of charge is not greater than the rated state of charge, control the fuel cell to charge the super capacitor.

[0015] Preferably, the driving parameter includes a driving state;

[0016] After judging the driving parameter, it further includes:

[0017] If the driving state is a braking state or a decelerating state, control the super capacitor to recover energy until the current state of charge of the super capacitor meets the set charging condition of the super capacitor, and then control the power battery to recover energy.

[0018] Preferably, during the process of controlling the power battery to recover energy, it further includes:

[0019] If the state of charge of the power battery is greater than the set state of charge of the power battery, output a notification message.

[0020] Based on the same inventive concept, in a second aspect, the present invention further provides a control device for a fuel cell vehicle power system, including:

[0021] An acquisition module, configured to acquire driving parameters of the whole vehicle during the driving process of the whole vehicle, where the driving parameters include the driving power of the whole vehicle and the current state of charge of the super capacitor of the whole vehicle;

[0022] A judgment module, configured to judge the driving parameters;

[0023] A control module, configured to, if the driving power is greater than the set output power of the fuel cell of the whole vehicle, and the current state of charge is greater than the rated state of charge of the super capacitor, control the super capacitor and the fuel cell to provide driving force, and control the power battery of the whole vehicle to provide auxiliary electric energy.

[0024] Preferably, the control module is configured to:

[0025] If the driving power is greater than the set output power and the current state of charge is not greater than the rated state of charge, control the fuel cell and the power battery to provide driving force, and control the super capacitor to be in a standby state.

[0026] Based on the same inventive concept, in a third aspect, the present invention provides a fuel cell vehicle, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the control method for the power system of the fuel cell vehicle are implemented.

[0027] Based on the same inventive concept, in a fourth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the steps of the control method for the power system of the fuel cell vehicle are implemented.

[0028] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0029] In the embodiments of the present invention, during the driving process of the whole vehicle, driving parameters of the whole vehicle are acquired, where the driving parameters include the driving power of the whole vehicle and the current state of charge of the super capacitor of the whole vehicle. Here, when a super capacitor is introduced into the power system of the fuel cell vehicle, it is necessary to monitor the current state of charge of the super capacitor of the whole vehicle in real time to control different energy sources of the whole vehicle, improve the control efficiency of the whole vehicle, optimize the power system of the fuel cell vehicle and the management of the energy of the whole vehicle. Then, the driving parameters are judged.

[0030] If the driving power is greater than the set output power of the fuel cell of the whole vehicle and the current state of charge is greater than the rated state of charge of the super capacitor, control the super capacitor and the fuel cell to provide driving force, and control the power battery of the whole vehicle to provide auxiliary electric energy. Here, the embodiments of the present invention implement a control strategy among the fuel cell, the power battery, and the super capacitor, enabling the fuel cell, the power battery, and the super capacitor to provide driving force for the whole vehicle under different conditions, optimizing the power system of the fuel cell vehicle and the management of the energy of the whole vehicle, improving the power performance and control efficiency of the fuel cell vehicle, extending the service life of the power system, and improving the response ability of the fuel cell vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0032] Figure 1Shows the schematic flow chart of the steps of the control method of the fuel cell vehicle power system in the embodiment of the present invention;

[0033] Figure 2 Shows the schematic diagram of the modules of the power system of the fuel cell vehicle in the embodiment of the present invention;

[0034] Figure 3 Shows the schematic diagram of the installation position of the power system of the fuel cell vehicle in the embodiment of the present invention;

[0035] Figure 4 Shows the schematic diagram of the modules of the control device of the fuel cell vehicle power system in the embodiment of the present invention. Detailed implementation manners

[0036] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0037] Embodiment 1

[0038] The first embodiment of the present invention provides a control method for a fuel cell vehicle power system, as Figure 1 shown, including:

[0039] S101, during the driving of the whole vehicle, obtain the driving parameters of the whole vehicle, where the driving parameters include the driving power of the whole vehicle and the current state of charge of the super capacitor of the whole vehicle;

[0040] S102, judge the driving parameters;

[0041] S103, if the driving power is greater than the set output power of the fuel cell of the whole vehicle, and the current state of charge is greater than the rated state of charge of the super capacitor, then control the super capacitor and the fuel cell to provide driving force, and control the power battery of the whole vehicle to provide auxiliary electric energy.

[0042] In this embodiment, the control method of the fuel cell vehicle power system in this embodiment is applied to the power system of the fuel cell. As Figure 2As shown in the figure, the power system of the fuel cell includes: a power battery 201, a fuel cell 202, a super capacitor 203, a busbar 204, a motor controller MCU (Motor Control Unit) 205, a drive motor (Motor) 206, a vehicle controller VCU (Vehicle Control Unit) 207, and a fuel cell-super capacitor controller FCSC (Fuel cell-Supercapacitors control unit) 208. Among them, the FCSC 208 is a controller that coordinates and controls the fuel cell 202 and the super capacitor 203 to achieve simplified related control of the super capacitor 203 and the fuel cell 202 without modifying the vehicle controller VCU 207. Both the super capacitor 203 and the fuel cell 202 are connected to the power distribution unit 209 of the power battery 201 through the busbar 204. Among them, the busbar 204 is used to combine the fuel cell 202 and the super capacitor 203 to form a dual energy source supply, and the power distribution unit is used to coordinate the energy supply among the power battery 201, the fuel cell 202, and the super capacitor 203. One end of the motor controller MCU 205 is connected to the power distribution power supply, and the other end is connected to the drive motor 206. Both the fuel cell 202 and the super capacitor 203 are connected to the fuel cell-super capacitor controller FCSC 208. Among them, the fuel cell-super capacitor controller FCSC 208 is used to control the fuel cell 202 and the super capacitor 203. Both the motor controller MCU 205 and the FCSC 208 are connected to the vehicle controller VCU 207.

[0043] It should be noted that the power battery 201, the fuel cell 202, and the super capacitor 203 in this embodiment all refer to the relevant components of the power battery, the relevant components of the fuel cell, and the relevant components of the super capacitor in the actual application of fuel cell vehicles. For example, the relevant components of the fuel cell in the actual application of fuel cell vehicles include the fuel cell body, the DC / DC (Direct Current, direct current converter) of the fuel cell body, and the fuel cell controller FCCU (Fuel cell controlunit). These relevant components are collectively referred to as the fuel cell 202 in this embodiment.

[0044] The power system is installed on the fuel cell vehicle, and the specific installation location is set according to actual needs. For example, as Figure 3 shown, the fuel cell 202 of the power system and the drive motor 206 are installed in the front cabin of the fuel cell vehicle, the power battery 201 is installed under the front row seats of the fuel cell vehicle, and the super capacitor 203 and the hydrogen storage tank of the fuel cell 202 are installed in the trunk of the fuel cell vehicle.

[0045] Next, in combination with Figure 1The specific implementation steps of the control method of the fuel cell vehicle power system provided by this embodiment are introduced in detail:

[0046] First, step S101 is executed to obtain driving parameters of the whole vehicle during the driving of the whole vehicle, wherein the driving parameters include the driving power of the whole vehicle and the current state of charge of the supercapacitor of the whole vehicle.

[0047] Specifically, during the driving process of the vehicle, the driving parameters of the vehicle are obtained according to the current voltage and current current of the vehicle, and the driving parameters include the driving power of the vehicle, the driving power growth rate, the current state of charge of the supercapacitor of the vehicle, and the driving state. Among them, the driving power is the driving power required by the vehicle during the driving process. For example, the vehicle needs to reach a speed of 80km / h, and the driving power corresponding to the speed is the driving power. The driving power growth rate is the growth rate of the driving power.

[0048] Then, step S102 is executed to judge the driving parameters. Then, step S103 is executed to control the supercapacitor and the fuel cell to provide driving force and the power battery of the vehicle to provide auxiliary power if the driving power is greater than the set output power of the fuel cell of the vehicle and the current state of charge is greater than the rated state of charge of the supercapacitor.

[0049] Specifically, after judging the driving parameters, if the driving power is greater than the set output power of the fuel cell of the whole vehicle, and the current state of charge is greater than the rated state of charge of the supercapacitor, it means that the driving force provided by the fuel cell fails to meet the actual driving force required by the whole vehicle, and the power of the supercapacitor is sufficient, then the supercapacitor and the fuel cell are controlled to provide driving force, and the power battery of the whole vehicle is controlled to provide auxiliary power, that is, the supercapacitor is controlled to discharge so that the superflash provides driving force first, and then the fuel cell is controlled to supplement the driving force, and the power battery is controlled to provide auxiliary power for the whole vehicle to meet the actual driving force required by the whole vehicle.

[0050] Here, it should be noted that after controlling the supercapacitor and fuel cell to provide driving force, the actual driving force required by the vehicle is still not met at this time, and then the power battery is controlled to provide auxiliary electric energy for the vehicle to meet the actual driving force required by the vehicle. After controlling the supercapacitor and fuel cell to provide driving force, the actual driving force required by the vehicle is met at this time, and there is no need to control the power battery to provide auxiliary electric energy for the vehicle. Under the condition that the driving power is greater than the set output power of the fuel cell of the vehicle, and the current state of charge is greater than the rated state of charge of the supercapacitor, the priority of the supercapacitor providing driving force is greater than the priority of the fuel cell providing driving force, and the priority of the fuel cell providing driving force is greater than the priority of the power battery providing driving force.

[0051] In this embodiment, the set output power of the fuel cell and the rated state of charge of the super capacitor can both be set according to actual requirements. The set output power of the fuel cell is generally the minimum output power of the fuel cell, and the rated state of charge of the super capacitor is generally the minimum state of charge of the super capacitor.

[0052] In this embodiment, a super capacitor is introduced into the power system of a fuel cell vehicle, enabling the fuel cell, power battery, and super capacitor to all provide driving force for the vehicle. Moreover, this embodiment also implements a control strategy among the fuel cell, power battery, and super capacitor, enabling them to provide driving force for the vehicle under different conditions, optimizing the power system of the fuel cell vehicle and the management of the vehicle's overall energy, improving the power performance and control efficiency of the fuel cell vehicle, extending the lifespan of the power system, and enhancing the response ability of the fuel cell vehicle.

[0053] After judging the driving parameters, if the driving power is greater than the set output power and the current state of charge of the super capacitor is not greater than the rated state of charge of the super capacitor, it indicates that the driving force provided by the fuel cell fails to meet the actual driving force required by the vehicle and the power of the super capacitor is insufficient. Then, control the fuel cell and the power battery to provide driving force, and control the super capacitor to be in a standby state.

[0054] After judging the driving parameters, if the driving power is not greater than the set output power, it indicates that the driving force provided by the fuel cell can meet the actual driving force required by the vehicle and the power of the super capacitor is insufficient. Then, control the fuel cell to provide driving force, and control the super capacitor and the power battery to be in a standby state.

[0055] After judging the driving parameters, if the growth rate of the driving power is not greater than the growth rate of the output power of the fuel cell and the current state of charge of the super capacitor is not greater than the rated state of charge of the super capacitor, it indicates that the output power of the fuel cell not only meets the actual power required by the vehicle but also has surplus output power. Then, control the fuel cell to charge the super capacitor. Among them, the growth rate of the output power of the fuel cell is set according to actual requirements. For example, the growth rate of the output power of the fuel cell is an increase of 400W in output power per second.

[0056] After judging the driving parameters, if the driving state is a braking state or a decelerating state, then control the super capacitor to recover energy. After the current state of charge of the super capacitor meets the set charging condition of the super capacitor, then control the power battery to recover energy. Among them, the set charging condition of the super capacitor is that the current state of charge of the super capacitor is not less than the maximum state of charge of the super capacitor. The maximum state of charge of the super capacitor is set according to actual requirements and is generally set to 95%.

[0057] During the process of controlling the power battery for energy recovery, if the state of charge of the power battery is greater than the set state of charge of the power battery, it is determined that the energy recovery of the whole vehicle is completed, and a notification message is output. Wherein, the set state of charge is the maximum state of charge of the electric vehicle, and it can be set according to actual requirements.

[0058] In this embodiment, when the whole vehicle is in a braking state or a decelerating state, the super capacitor is preferentially used for energy recovery. Under the condition that the state of charge of the super capacitor is not less than the maximum state of charge of the super capacitor, the power battery is controlled for energy recovery, so as to extend the service life of the power battery and improve the endurance of the whole vehicle.

[0059] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0060] In this embodiment, during the driving process of the whole vehicle, the driving parameters of the whole vehicle are obtained. Wherein, the driving parameters include the driving power of the whole vehicle and the current state of charge of the super capacitor of the whole vehicle. Here, when a super capacitor is introduced into the power system of a fuel cell vehicle, it is necessary to monitor the current state of charge of the super capacitor of the whole vehicle in real time to control different energy sources of the whole vehicle, improve the control efficiency of the whole vehicle, optimize the power system of the fuel cell vehicle and the management of the energy of the whole vehicle. Then, the driving parameters are judged.

[0061] If the driving power is greater than the set output power of the fuel cell of the whole vehicle, and the current state of charge is greater than the rated state of charge of the super capacitor, the super capacitor and the fuel cell are controlled to provide driving force, and the power battery of the whole vehicle is controlled to provide auxiliary electric energy. Here, this embodiment realizes the control strategy among the fuel cell, the power battery and the super capacitor, enables the fuel cell, the power battery and the super capacitor to provide driving force for the whole vehicle under different conditions, optimizes the power system of the fuel cell vehicle and the management of the energy of the whole vehicle, improves the power performance and control efficiency of the fuel cell vehicle, extends the service life of the power system, and improves the response ability of the fuel cell vehicle.

[0062] Embodiment 2

[0063] Based on the same inventive concept, the second embodiment of the present invention also provides a control device for a fuel cell vehicle power system, as Figure 4 shown, including:

[0064] An acquisition module 301, configured to obtain driving parameters of the whole vehicle during the driving process of the whole vehicle, where the driving parameters include the driving power of the whole vehicle and the current state of charge of the super capacitor of the whole vehicle;

[0065] A judgment module 302, configured to judge the driving parameters;

[0066] The control module 303 is configured to, if the driving power is greater than the set output power of the fuel cell of the whole vehicle and the current state of charge is greater than the rated state of charge of the super capacitor, control the super capacitor and the fuel cell to provide driving force, and control the power battery of the whole vehicle to provide auxiliary electric energy.

[0067] As an optional embodiment, the control module 303 is configured to:

[0068] If the driving power is greater than the set output power and the current state of charge is not greater than the rated state of charge, control the fuel cell and the power battery to provide driving force, and control the super capacitor to be in a standby state.

[0069] As an optional embodiment, the control module 303 is configured to:

[0070] If the driving power is not greater than the set output power, control the fuel cell to provide driving force, and control the super capacitor and the power battery to be in a standby state.

[0071] As an optional embodiment, the driving parameter includes a driving power growth rate, where the driving power growth rate is the growth rate of the driving power;

[0072] The control module 303 is configured to:

[0073] If the driving power growth rate is not greater than the growth rate of the output power of the fuel cell and the current state of charge is not greater than the rated state of charge, control the fuel cell to charge the super capacitor.

[0074] As an optional embodiment, the driving parameter includes a driving state;

[0075] The control module 303 is configured to:

[0076] If the driving state is a braking state or a decelerating state, control the super capacitor to perform energy recovery until the current state of charge of the super capacitor meets the set charging condition of the super capacitor, and then control the power battery to perform energy recovery.

[0077] As an optional embodiment, during the process of controlling the power battery to perform energy recovery, it further includes:

[0078] If the state of charge of the power battery is greater than the set state of charge of the power battery, output a notification message.

[0079] Since the control device of the fuel cell vehicle power system introduced in this embodiment is the device adopted for implementing the control method of the fuel cell vehicle power system in Embodiment 1 of the present application, based on the control method of the fuel cell vehicle power system introduced in Embodiment 1 of the present application, those skilled in the art can understand the specific implementation manners and various variations of the control device of the fuel cell vehicle power system in this embodiment. Therefore, the implementation of how the control device of the fuel cell vehicle power system realizes the method in Embodiment 1 of the present application will not be described in detail here. As long as those skilled in the art implement the device adopted for implementing the control method of the fuel cell vehicle power system in Embodiment 1 of the present application, it falls within the scope protected by the present application.

[0080] Embodiment 3

[0081] Based on the same inventive concept, the third embodiment of the present invention also provides a fuel cell vehicle, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the steps of any one of the control methods of the fuel cell vehicle power system described above.

[0082] Embodiment 4

[0083] Based on the same inventive concept, the fourth embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, it implements the steps of any one of the control methods of the fuel cell vehicle power system described in Embodiment 1 above.

[0084] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0085] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present invention. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate for implementing in the process Figure 1 one process or multiple processes and / or blocks Figure 1means for the functions specified in one or more boxes.

[0086] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce a manufacture including an instruction means that implements the functions specified in one Figure 1 or more processes and / or boxes Figure 1 or more boxes.

[0087] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, so that the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one Figure 1 or more processes and / or boxes Figure 1 or more boxes.

[0088] Although the preferred embodiments of the present invention have been described, additional changes and modifications can be made by those skilled in the art once they learn of the basic inventive concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the present invention.

[0089] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A control method for a power system of a fuel cell vehicle, characterized in that, including: During the driving process of the whole vehicle, obtain the driving parameters of the whole vehicle, where the driving parameters include the driving power of the whole vehicle and the current state of charge of the super capacitor of the whole vehicle; Judge the driving parameters; If the driving power is greater than the set output power of the fuel cell of the whole vehicle, and the current state of charge is greater than the rated state of charge of the super capacitor, then control the super capacitor and the fuel cell to provide driving force. If the actual driving force required by the whole vehicle is still not satisfied at this time, then control the power battery of the whole vehicle to provide auxiliary electric energy; The driving parameters include the driving power growth rate, where the driving power growth rate is the growth rate of the driving power; After judging the driving parameters, it further includes: If the driving power growth rate is not greater than the growth rate of the output power of the fuel cell, and the current state of charge is not greater than the rated state of charge, then control the fuel cell to charge the super capacitor.

2. The method according to claim 1, wherein After judging the driving parameters, it further includes: If the driving power is greater than the set output power, and the current state of charge is not greater than the rated state of charge, then control the fuel cell and the power battery to provide driving force, and control the super capacitor to be in a standby state.

3. The method according to claim 1, wherein After judging the driving parameters, it further includes: If the driving power is not greater than the set output power, then control the fuel cell to provide driving force, and control the super capacitor and the power battery to be in a standby state.

4. The method according to claim 1, wherein The driving parameters include the driving state; After judging the driving parameters, it further includes: If the driving state is a braking state or a decelerating state, then control the super capacitor to recover energy until the current state of charge of the super capacitor meets the set charging condition of the super capacitor, and then control the power battery to recover energy.

5. The method according to claim 4, wherein During the process of controlling the power battery to recover energy, it further includes: If the state of charge of the power battery is greater than the set state of charge of the power battery, then output a notification message.

6. A control device for a power system of a fuel cell vehicle, characterized in that, including: An acquisition module, used to obtain the driving parameters of the whole vehicle during the driving process of the whole vehicle, where the driving parameters include the driving power of the whole vehicle and the current state of charge of the super capacitor of the whole vehicle; A judgment module, used to judge the driving parameters; A control module, used to control the super capacitor and the fuel cell to provide driving force if the driving power is greater than the set output power of the fuel cell of the whole vehicle, and the current state of charge is greater than the rated state of charge of the super capacitor. If the actual driving force required by the whole vehicle is still not satisfied at this time, then control the power battery of the whole vehicle to provide auxiliary electric energy; The control module is further used for: If the driving power growth rate is not greater than the growth rate of the output power of the fuel cell, and the current state of charge is not greater than the rated state of charge, then control the fuel cell to charge the super capacitor.

7. The device according to claim 6, characterized in that, The control module is used for: If the driving power is greater than the set output power and the current state of charge is not greater than the rated state of charge, control the fuel cell and the power battery to provide driving force, and control the super capacitor to be in a standby state.

8. A fuel cell vehicle, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the computer program, the method described in any one of claims 1-5 is implemented.

9. A computer-readable storage medium, on which a computer program is stored, characterized in that, When the computer program is executed by a processor, the method described in any one of claims 1-5 is implemented.

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