Control method, system and equipment of fuel cell vehicle and readable storage medium
By controlling the fuel cell system to maintain and gradually reduce power output when the power battery system of a fuel cell vehicle experiences an abnormal power outage, the problem of system damage caused by emergency shutdown is solved, and the service life of the fuel cell system is extended.
Patent Information
- Application Number
- CN202511743479.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-01-16
AI Technical Summary
Existing fuel cell vehicles employ an emergency shutdown control method when the power battery system is abnormally disconnected, which damages the fuel cell system and affects its service life.
When the power battery system experiences an abnormal power failure, it determines whether the vehicle is in motion. If so, it controls the fuel cell system to maintain power output to the main drive motor controller and electric auxiliary components until the vehicle stops, at which point the power output is gradually reduced. If not, it directly reduces the power output to the electric auxiliary components until the system shuts down.
This avoids emergency shutdown of the fuel cell system, maintains vehicle power, gradually consumes the fuel cell system's energy, and extends the system's lifespan.
Smart Images
Figure CN121340920A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fuel cell vehicle technology, and in particular to a control method, system, device, and readable storage medium for a fuel cell vehicle. Background Technology
[0002] A fuel cell vehicle is a car powered by electricity generated by an onboard fuel cell system. The fuel used in this system is high-purity hydrogen or reformed hydrogen-containing fuel. Unlike conventional electric vehicles, which rely on batteries charged from the grid, fuel cells provide the electricity for the fuel cell system. Therefore, the key component of a fuel cell vehicle is the fuel cell itself, a highly efficient power generation system that converts the chemical energy of fuel into electrical energy directly through an electrochemical reaction without burning fuel. Unlike traditional mechanical power generation principles where a conductor cuts magnetic lines of force, this electrochemical reaction is a static power generation method that generates electricity without any physical movement. Consequently, fuel cells offer advantages such as high efficiency, low noise, and zero pollutant emissions, ensuring that fuel cell vehicles are highly efficient and clean vehicles.
[0003] In addition to the fuel cell system, fuel cell vehicles are also equipped with a power battery system. The fuel cell system is the energy generator of the fuel cell vehicle, while the power battery system is the energy regulator. Their coordinated operation forms the basis for the efficient operation of fuel cell vehicles. The former is a real-time power generation device, and the latter is an energy storage device. In the event of an abnormal disconnection of the power battery system, existing fuel cell vehicles generally handle the situation by taking an emergency shutdown control method. This method is simple and direct, but frequent emergency shutdowns increase the instability of the electrochemical reactions inside the fuel cell stack, leading to the shedding of active materials from the electrode plates or membrane damage, thus shortening the lifespan of the fuel cell system. Summary of the Invention
[0004] This invention provides a control method, system, device, and readable storage medium for fuel cell vehicles to solve the technical problem that in existing fuel cell vehicles, when the power battery system is abnormally disconnected, the emergency shutdown control method used by the fuel cell system can cause a certain degree of damage to the fuel cell system and affect its service life.
[0005] Firstly, a control method for a fuel cell vehicle is provided, comprising the following steps: When the power battery system experiences an abnormal power outage, determine whether the vehicle is in motion. If so, the fuel cell system is controlled to maintain power output to the main drive motor controller and multiple electric auxiliary components. When the vehicle stops, the fuel cell system is controlled to reduce power output to the multiple electric auxiliary components until the fuel cell system shuts down.
[0006] In some embodiments, after determining whether the vehicle is in motion when an abnormal power failure occurs in the power battery system, the method further includes: If not, control the fuel cell system to reduce power output to multiple electric auxiliary components until the fuel cell system shuts down.
[0007] In some embodiments, controlling the fuel cell system to reduce power output to multiple electric auxiliary components until the fuel cell system shuts down includes: Determine whether the net output power of the fuel cell system is greater than the sum of the power of the multiple electric auxiliary components; If so, adjust the air compressor speed of the fuel cell system and adjust the air bypass valve of the fuel cell system.
[0008] In some embodiments, the control of the fuel cell system to maintain power output to the main drive motor controller and multiple electric auxiliary components includes: The net output power of the fuel cell system should not exceed the sum of the power of the main drive motor controller and multiple electric auxiliary components.
[0009] Secondly, a control system for a fuel cell vehicle is provided, including a vehicle controller, the vehicle controller comprising: The judgment unit is used to determine whether the vehicle is in a driving state when the power battery system experiences an abnormal power failure. The control unit is used to control the fuel cell system to maintain power output to the main drive motor controller and multiple electric auxiliary components if the vehicle stops, and to control the fuel cell system to reduce power output to the multiple electric auxiliary components until the fuel cell system shuts down.
[0010] In some embodiments, after determining whether the vehicle is in motion when an abnormal power failure occurs in the power battery system, the method further includes: The control unit is also used to, if not, control the fuel cell system to reduce power output to multiple electric auxiliary components until the fuel cell system shuts down.
[0011] In some embodiments, the step of controlling the fuel cell system to reduce power output to multiple electric auxiliary components until the fuel cell system shuts down includes: Determine whether the net output power of the fuel cell system is greater than the sum of the power of the multiple electric auxiliary components; If so, adjust the air compressor speed of the fuel cell system and simultaneously adjust the air bypass valve of the fuel cell system.
[0012] In some embodiments, the control of the fuel cell system to maintain power output to the main drive motor controller and multiple electric auxiliary components includes: The net output power of the fuel cell system should not exceed the sum of the power of the main drive motor controller and multiple electric auxiliary components.
[0013] Thirdly, a computer device is provided, comprising: a memory and a processor, wherein the memory stores at least one instruction, the at least one instruction being loaded and executed by the processor to implement the aforementioned control method for a fuel cell vehicle.
[0014] Fourthly, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions that, when executed by a computer, cause the computer to perform the aforementioned control method for a fuel cell vehicle.
[0015] The beneficial effects of the technical solution provided by this invention include: This invention provides a control method, system, device, and readable storage medium for a fuel cell vehicle. When the power battery system experiences an abnormal power outage, the control method controls the fuel cell system to continue operating without performing an emergency shutdown. It first uses the output power of the fuel cell system to maintain the operation of the main drive motor controller and multiple electric auxiliary components. While consuming the energy of the fuel cell system, it can prevent the vehicle from losing power or having no power steering. Then, it gradually consumes the residual energy of the fuel cell system, which can prevent damage to the fuel cell system and ensure the service life of the fuel cell system. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A schematic flowchart of a control method for a fuel cell vehicle provided in an embodiment of the present invention; Figure 2 This is an architecture diagram of the vehicle high-voltage system provided in an embodiment of the present invention; Figure 3 This is another schematic flowchart illustrating a control method for a fuel cell vehicle provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the control system of a fuel cell vehicle provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a computer device provided in an embodiment of the present invention. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] The fuel cell system is the energy generator of a fuel cell vehicle, while the power battery system is the energy regulator. Their coordinated operation forms the basis for the efficient operation of a fuel cell vehicle; the former is a real-time power generation device, and the latter is an energy storage device. Currently, when the power battery system is abnormally disconnected, existing fuel cell vehicles typically handle the situation with an emergency shutdown. This method is simple and direct, but frequent emergency shutdowns increase the instability of the electrochemical reactions within the fuel cell stack, leading to the shedding of active materials from the electrode plates or membrane damage, thus shortening the lifespan of the fuel cell system.
[0020] This invention provides a control method for fuel cell vehicles, which solves the technical problem that when the power battery system of existing fuel cell vehicles is abnormally disconnected, the emergency shutdown control method of the fuel cell system will cause a certain degree of damage to the fuel cell system and affect the service life of the fuel cell system.
[0021] See Figure 1 As shown, this embodiment of the invention provides a control method for a fuel cell vehicle, including the following steps: Step S10: When the power battery system experiences an abnormal power outage, determine whether the vehicle is in a driving state.
[0022] In step S20, if yes, control the fuel cell system to maintain power output to the main drive motor controller and multiple electric auxiliary components. When the vehicle stops, control the fuel cell system to reduce power output to the multiple electric auxiliary components until the fuel cell system shuts down.
[0023] Specifically, see Figure 2 As shown, Figure 2 This is a diagram of the vehicle's high-voltage system architecture. The high-voltage system includes a power battery system, a fuel cell system, a main drive motor controller, and multiple electric auxiliary components. The power battery system has a first relay at its connection to the DC bus, the fuel cell system has a second relay at its connection to the DC bus, the main drive motor controller has a third relay at its connection to the DC bus, and the multiple electric auxiliary components have a fourth relay at their connection to the DC bus. These electric auxiliary components include an electric steering controller, an electric air inflator controller, and a DC / DC converter, among others.
[0024] When the fuel cell system starts up and operates normally, if a serious fault occurs in the power battery system, the first relay will disconnect. The vehicle controller will detect that the high voltage of the power battery system has been disconnected. The vehicle controller will then determine whether the vehicle is in motion, which can generally be determined by the speed sensor.
[0025] If the vehicle speed is not zero, the vehicle controller sends a command to keep the fuel cell system running continuously and keeps the second, third, and fourth relays on, allowing the fuel cell system to operate normally and continuously output power. However, if the vehicle malfunctions at this point, the driver will slow the vehicle down. Once the vehicle stops, the vehicle controller sends another command to reduce the power output of the fuel cell system to multiple electric auxiliary components, i.e., keeping the second and fourth relays on. The remaining power of the fuel cell system is gradually consumed by these electric auxiliary components until the fuel cell system shuts down.
[0026] The control method for fuel cell vehicles in this embodiment of the invention controls the fuel cell system to continue operating when the power battery system experiences an abnormal power outage, without performing an emergency shutdown operation. First, the output power of the fuel cell system is used to maintain the operation of the main drive motor controller and multiple electric auxiliary components. While consuming the energy of the fuel cell system, the loss of vehicle power or lack of power steering can be avoided. Then, the residual energy of the fuel cell system is gradually consumed, which can prevent damage to the fuel cell system and ensure the service life of the fuel cell system.
[0027] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 3 As shown, after determining whether the vehicle is in motion when the power battery system experiences an abnormal power outage, the method further includes: Step S30: If not, control the fuel cell system to reduce power output to multiple electric auxiliary components until the fuel cell system shuts down.
[0028] Specifically, if the vehicle speed is zero, the vehicle controller issues a command to control the fuel cell system to reduce the power output to multiple electric auxiliary components, that is, to control the second and fourth relays to remain on. The remaining power of the fuel cell system is gradually consumed by the multiple electric auxiliary components until the fuel cell system shuts down.
[0029] Similarly, if the fuel cell system has already started and is operating normally when the vehicle is stationary, controlling the fuel cell system to continue operating without performing an emergency shutdown operation and gradually consuming the residual energy of the fuel cell system can prevent damage to the fuel cell system and ensure its service life.
[0030] As an optional implementation, in one embodiment of the invention, controlling the fuel cell system to reduce power output to multiple electric auxiliary components until the fuel cell system shuts down includes: Determine whether the net output power of the fuel cell system is greater than the sum of the power of the multiple electric auxiliary components; If so, adjust the air compressor speed of the fuel cell system and adjust the air bypass valve of the fuel cell system.
[0031] To minimize damage to the fuel cell system, its net output power should be less than the maximum power consumed by the multiple electric auxiliary components. If the actual net output power of the fuel cell system exceeds the maximum power consumed by the multiple electric auxiliary components, considering that the power generation of the fuel cell system is generally low at this time, reducing the power generation by adjusting the electrochemical reaction to reduce the net output power is not effective. Instead, the fuel cell system can be controlled to increase its own power consumption to reduce the net output power to the level of the multiple electric auxiliary components. This can be achieved by adjusting the air compressor speed to increase the air compressor's energy consumption, while simultaneously adjusting the air bypass valve to directly discharge the intake air, increasing the air intake volume and increasing its own energy consumption.
[0032] As an optional implementation, in one embodiment of the invention, the control of the fuel cell system to maintain power output to the main drive motor controller and multiple electric auxiliary components includes: The net output power of the fuel cell system should not exceed the sum of the power of the main drive motor controller and multiple electric auxiliary components.
[0033] To minimize damage to the fuel cell system, its net output power should not exceed the sum of the power of the main drive motor controller and multiple electric auxiliary components. If the actual net output power of the fuel cell system exceeds the sum of the power of the main drive motor controller and multiple electric auxiliary components, the net output power of the fuel cell system can be reduced. Considering that the fuel cell system's power generation is relatively high at this point, the power generation can be reduced by adjusting the electrochemical reaction to decrease the net output power.
[0034] See Figure 4 As shown in the figure, an embodiment of the present invention also provides a control system for a fuel cell vehicle, including a vehicle controller, wherein the vehicle controller includes a judgment unit and a control unit.
[0035] The judgment unit is used to determine whether the vehicle is in a driving state when the power battery system experiences an abnormal power failure.
[0036] The control unit is used to control the fuel cell system to maintain power output to the main drive motor controller and multiple electric auxiliary components if the vehicle stops, and to control the fuel cell system to reduce power output to the multiple electric auxiliary components until the fuel cell system shuts down.
[0037] Specifically, see Figure 2 As shown, Figure 2 This is a diagram of the vehicle's high-voltage system architecture. The high-voltage system includes a power battery system, a fuel cell system, a main drive motor controller, and multiple electric auxiliary components. The power battery system has a first relay at its connection to the DC bus, the fuel cell system has a second relay at its connection to the DC bus, the main drive motor controller has a third relay at its connection to the DC bus, and the multiple electric auxiliary components have a fourth relay at their connection to the DC bus. These electric auxiliary components include an electric steering controller, an electric air inflator controller, and a DC / DC converter, among others.
[0038] When the fuel cell system starts up and operates normally, if a serious fault occurs in the power battery system, the first relay will disconnect. The vehicle controller will detect that the high voltage of the power battery system has been disconnected. The vehicle controller will then determine whether the vehicle is in motion, which can generally be determined by the speed sensor.
[0039] If the vehicle speed is not zero, the vehicle controller sends a command to keep the fuel cell system running continuously and keeps the second, third, and fourth relays on, allowing the fuel cell system to operate normally and continuously output power. However, if the vehicle malfunctions at this point, the driver will slow the vehicle down. Once the vehicle stops, the vehicle controller sends another command to reduce the power output of the fuel cell system to multiple electric auxiliary components, i.e., keeping the second and fourth relays on. The remaining power of the fuel cell system is gradually consumed by these electric auxiliary components until the fuel cell system shuts down.
[0040] The control system of the fuel cell vehicle in this embodiment of the invention controls the fuel cell system to continue operating when the power battery system experiences an abnormal power failure, without performing an emergency shutdown operation. It first uses the output power of the fuel cell system to maintain the operation of the main drive motor controller and multiple electric auxiliary components. While consuming the energy of the fuel cell system, it can avoid loss of vehicle power or lack of power steering. Then, it gradually consumes the residual energy of the fuel cell system, which can avoid damage to the fuel cell system and ensure the service life of the fuel cell system.
[0041] As an optional implementation, in one embodiment of the invention, after determining whether the vehicle is in a driving state when the power battery system experiences an abnormal power outage, the method further includes: The control unit is also used to, if not, control the fuel cell system to reduce power output to multiple electric auxiliary components until the fuel cell system shuts down.
[0042] Specifically, if the vehicle speed is zero, the vehicle controller issues a command to control the fuel cell system to reduce the power output to multiple electric auxiliary components, that is, to control the second and fourth relays to remain on. The remaining power of the fuel cell system is gradually consumed by the multiple electric auxiliary components until the fuel cell system shuts down.
[0043] Similarly, if the fuel cell system has already started and is operating normally when the vehicle is stationary, controlling the fuel cell system to continue operating without performing an emergency shutdown operation and gradually consuming the residual energy of the fuel cell system can prevent damage to the fuel cell system and ensure its service life.
[0044] As an optional implementation, in one embodiment of the invention, the step of controlling the fuel cell system to reduce power output to multiple electric auxiliary components until the fuel cell system shuts down includes: Determine whether the net output power of the fuel cell system is greater than the sum of the power of the multiple electric auxiliary components; If so, adjust the air compressor speed of the fuel cell system and simultaneously adjust the air bypass valve of the fuel cell system.
[0045] To minimize damage to the fuel cell system, its net output power should be less than the maximum power consumed by the multiple electric auxiliary components. If the actual net output power of the fuel cell system exceeds the maximum power consumed by the multiple electric auxiliary components, considering that the power generation of the fuel cell system is generally low at this time, reducing the power generation by adjusting the electrochemical reaction to reduce the net output power is not effective. Instead, the fuel cell system can be controlled to increase its own power consumption to reduce the net output power to the level of the multiple electric auxiliary components. This can be achieved by adjusting the air compressor speed to increase the air compressor's energy consumption, while simultaneously adjusting the air bypass valve to directly discharge the intake air, increasing the air intake volume and increasing its own energy consumption.
[0046] As an optional implementation, in one embodiment of the invention, the control of the fuel cell system to maintain power output to the main drive motor controller and multiple electric auxiliary components includes: The net output power of the fuel cell system should not exceed the sum of the power of the main drive motor controller and multiple electric auxiliary components.
[0047] To minimize damage to the fuel cell system, its net output power should not exceed the sum of the power of the main drive motor controller and multiple electric auxiliary components. If the actual net output power of the fuel cell system exceeds the sum of the power of the main drive motor controller and multiple electric auxiliary components, the net output power of the fuel cell system can be reduced. Considering that the fuel cell system's power generation is relatively high at this point, the power generation can be reduced by adjusting the electrochemical reaction to decrease the net output power.
[0048] This invention also provides a computer device, including: a memory, a processor, and a network interface connected via a system bus, wherein the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement all or part of the steps of the aforementioned control method for fuel cell vehicles.
[0049] The network interface is used for network communication, such as sending assigned tasks. Those skilled in the art will understand that... Figure 5 The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the computer device to which the present invention is applied. A specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.
[0050] A processor can be a CPU, or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. A general-purpose processor can be a microprocessor, or any conventional processor. The processor is the control center of a computer device, connecting all parts of the computer device through various interfaces and lines.
[0051] Memory can be used to store computer programs and / or modules. The processor implements various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and by accessing data stored in the memory. Memory can mainly include a program storage area and a data storage area. The program storage area can store the operating system, application programs required for at least one function (such as video playback, image playback, etc.), etc.; the data storage area can store data created based on the use of the mobile phone (such as video data, image data, etc.). In addition, memory can include high-speed random access memory, and can also include non-volatile memory, such as hard disks, RAM, plug-in hard disks, SmartMedia Cards (SMC), Secure Digital (SD) cards, Flash Cards, at least one disk storage device, flash memory device, or other volatile solid-state storage devices.
[0052] In one embodiment of the invention, the processor is used to run a computer program stored in a memory to perform the following steps: Step S10: When the power battery system experiences an abnormal power failure, determine whether the vehicle is in a driving state. In step S20, if yes, control the fuel cell system to maintain power output to the main drive motor controller and multiple electric auxiliary components. When the vehicle stops, control the fuel cell system to reduce power output to the multiple electric auxiliary components until the fuel cell system shuts down.
[0053] As an optional implementation, in one embodiment of the invention, after determining whether the vehicle is in a driving state when the power battery system experiences an abnormal power outage, the method further includes: Step S30: If not, control the fuel cell system to reduce power output to multiple electric auxiliary components until the fuel cell system shuts down.
[0054] As an optional implementation, in one embodiment of the invention, controlling the fuel cell system to reduce power output to multiple electric auxiliary components until the fuel cell system shuts down includes: Determine whether the net output power of the fuel cell system is greater than the sum of the power of the multiple electric auxiliary components; If so, adjust the air compressor speed of the fuel cell system and adjust the air bypass valve of the fuel cell system.
[0055] As an optional implementation, in one embodiment of the invention, the control of the fuel cell system to maintain power output to the main drive motor controller and multiple electric auxiliary components includes: The net output power of the fuel cell system should not exceed the sum of the power of the main drive motor controller and multiple electric auxiliary components.
[0056] This invention also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements all or part of the steps of the aforementioned control method for a fuel cell vehicle.
[0057] The embodiments of the present invention can implement all or part of the aforementioned processes, or they can be accomplished by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various methods described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added to or subtracted according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.
[0058] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, servers, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.
[0059] 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.
[0060] The serial numbers in the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0061] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0062] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.
Claims
1. A control method of a fuel cell vehicle, characterized by, The method comprises the following steps: When the power battery system is abnormally powered off, it is determined whether the vehicle is in a driving state; If yes, the fuel cell system is controlled to maintain power output to the main drive motor controller and the plurality of electric auxiliary components, and after the vehicle stops, the fuel cell system is controlled to reduce power output to the plurality of electric auxiliary components until the fuel cell system is shut down.
2. The control method of the fuel cell vehicle according to claim 1, characterized by After the step of determining whether the vehicle is in a driving state when the power battery system is abnormally powered off, the method further comprises: If no, the fuel cell system is controlled to reduce power output to the plurality of electric auxiliary components until the fuel cell system is shut down.
3. The control method of the fuel cell vehicle according to claim 2, characterized by The step of controlling the fuel cell system to reduce power output to the plurality of electric auxiliary components until the fuel cell system is shut down comprises: It is determined whether the net output power of the fuel cell system is greater than the sum of the powers of the plurality of electric auxiliary components; If yes, the air compressor speed of the fuel cell system is adjusted and the air path bypass valve of the fuel cell system is adjusted.
4. The control method of the fuel cell vehicle according to claim 1, characterized by The step of controlling the fuel cell system to maintain power output to the main drive motor controller and the plurality of electric auxiliary components comprises: The net output power of the fuel cell system is controlled to be not greater than the sum of the powers of the main drive motor controller and the plurality of electric auxiliary components.
5. A control system for a fuel cell vehicle, characterized by The vehicle controller comprises: A determination unit configured to determine whether the vehicle is in a driving state when the power battery system is abnormally powered off; A control unit configured to, if yes, control the fuel cell system to maintain power output to the main drive motor controller and the plurality of electric auxiliary components, and after the vehicle stops, control the fuel cell system to reduce power output to the plurality of electric auxiliary components until the fuel cell system is shut down.
6. The control system of the fuel cell vehicle according to claim 5, characterized by After the step of determining whether the vehicle is in a driving state when the power battery system is abnormally powered off, the method further comprises: The control unit is further configured to, if no, control the fuel cell system to reduce power output to the plurality of electric auxiliary components until the fuel cell system is shut down.
7. The control system of the fuel cell vehicle according to claim 6, characterized by The step of controlling the fuel cell system to reduce power output to the plurality of electric auxiliary components until the fuel cell system is shut down comprises: It is determined whether the net output power of the fuel cell system is greater than the sum of the powers of the plurality of electric auxiliary components; If yes, the air compressor speed of the fuel cell system is adjusted and the air path bypass valve of the fuel cell system is adjusted.
8. The control system of the fuel cell vehicle according to claim 5, characterized by The step of controlling the fuel cell system to maintain power output to the main drive motor controller and the plurality of electric auxiliary components comprises: The net output power of the fuel cell system is controlled to be not greater than the sum of the powers of the main drive motor controller and the plurality of electric auxiliary components.
9. A computer device, comprising: It comprises: A memory and a processor, the memory stores at least one instruction, the at least one instruction is loaded and executed by the processor to realize the control method of the fuel cell vehicle in any one of claims 1-4.
10. A computer-readable storage medium, characterized in that: The computer readable storage medium stores computer instructions, when the computer instructions are executed by a computer, the computer readable storage medium executes the control method of the fuel cell vehicle in any one of claims 1-4.