Hydrogen fuel supply pressure control system, method, apparatus and electronic equipment

Abstract

This application discloses a hydrogen fuel supply pressure control system, method, apparatus, and electronic equipment, relating to the field of hydrogen fuel control. The system includes a pipeline system and an electronic control system. The pipeline system connects the path for delivering hydrogen fuel to the engine; the electronic control system controls the state of hydrogen fuel delivery to the engine. The method includes: acquiring information on the engine's hydrogen fuel pressure demand; acquiring information on the hydrogen fuel flow demand in the pipeline system; generating information for adjusting the opening of the pressure regulating valve in the pipeline system based on the hydrogen fuel pressure demand and hydrogen fuel flow demand information; wherein, pressure closed-loop control is performed based on the hydrogen fuel pressure demand information; and flow closed-loop control is performed based on the hydrogen fuel flow demand information. Through the above scheme, the opening of the pressure regulator is controlled, simultaneously controlling pressure and flow to meet both pressure and flow demands. The pressure regulating valve and the engine hydrogen injector are isolated by a pressure stabilizing chamber, enabling stable control of pressure and flow.

Description

Technical Field

[0001] This application relates to the field of hydrogen fuel control, and more particularly to hydrogen fuel supply pressure control systems, hydrogen fuel supply pressure control methods, hydrogen fuel supply pressure control devices, electronic equipment, storage media, and vehicles. Background Technology

[0002] Currently, hydrogen energy is mainly used in transportation, particularly in hydrogen fuel cells and hydrogen engines. Due to the unique properties of hydrogen, to ensure safety, manufacturers need to conduct extensive testing and experimentation before developing powertrain products that use hydrogen as an energy source. Maintaining the hydrogen supply pressure during these tests is a critical issue. Research indicates that the operating pressure of the hydrogen injector in hydrogen engines requires strict control. In bench tests, a single hydrogen source typically supplies hydrogen to multiple test chambers, and the pressure control system on each bench can only meet the hydrogen supply requirements under steady-state conditions. When the required pressure for the hydrogen injector is low, the characteristics of low-pressure gases lead to instability in the hydrogen supply pressure control due to changes in demand flow rates when operating conditions vary significantly. Excessively low pressure may cause the injector to fail to open properly, resulting in abnormal combustion such as backfire; excessively high pressure may damage the injector, causing leaks and other problems.

[0003] Therefore, a solution for controlling the hydrogen fuel supply pressure is needed to automatically and reliably regulate the pressure and flow rate to ensure stable engine operation. Summary of the Invention

[0004] The purpose of this invention is to provide a hydrogen fuel supply pressure control system, a hydrogen fuel supply pressure control method, a hydrogen fuel supply pressure control device, an electronic device, a storage medium, and a vehicle, thereby solving at least one of the aforementioned technical problems related to regulating pressure and flow.

[0005] This invention provides the following solution:

[0006] According to one aspect of the present invention, a hydrogen fuel supply pressure control system is provided, the hydrogen supply pressure control system comprising:

[0007] Piping system and electrical control system;

[0008] Piping system, used to connect the hydrogen fuel to the engine;

[0009] The electronic control system is used to control the delivery of hydrogen fuel to the engine.

[0010] Furthermore, the piping system includes: a pressure regulating valve, a pressure stabilizing chamber, a flow meter, an engine hydrogen injector, an engine, and a hydrogen fuel line;

[0011] Pressure regulating valve, used for regulating hydrogen fuel pressure;

[0012] The pressure stabilizing chamber is used to stabilize hydrogen fuel pressure fluctuations;

[0013] Flow meter, used to provide feedback on the hydrogen fuel flow status;

[0014] Engine hydrogen injector, used to inject hydrogen fuel into the engine;

[0015] An engine that consumes hydrogen fuel and converts it into driving torque;

[0016] Hydrogen fuel pipeline, used for guiding hydrogen fuel in a pipeline system.

[0017] Furthermore, the electronic control system includes: an engine ECU, an inlet pressure sensor, an outlet pressure sensor, an outlet temperature sensor, a controller, and a communication bus;

[0018] The engine ECU is used to generate information on the engine's hydrogen fuel pressure requirements.

[0019] Imported pressure sensors are used to provide feedback on the pressure status at the inlet of the pipeline system;

[0020] An outlet pressure sensor is used to provide feedback on the pressure status at the outlet of a pipeline system.

[0021] Imported temperature sensors are used to provide feedback on the real-time temperature status at the inlet of the pipeline system.

[0022] The controller is used for closed-loop control of hydrogen fuel delivery from the pipeline system to the engine.

[0023] The communication bus is used for data communication for the controller to acquire information and send commands.

[0024] According to a second aspect of the present invention, a method for controlling hydrogen fuel supply pressure is provided, the method comprising:

[0025] Obtain information on the engine's hydrogen fuel pressure requirements;

[0026] Obtain information on hydrogen fuel flow requirements in the pipeline system;

[0027] Based on information on hydrogen fuel pressure demand and hydrogen fuel flow demand, information on regulating the opening of the regulating pipeline system is generated.

[0028] Among them, pressure closed-loop control is performed based on information about hydrogen fuel pressure demand;

[0029] Flow control is implemented in a closed loop based on information about hydrogen fuel flow demand.

[0030] Furthermore, obtaining the information on hydrogen fuel flow demand in the pipeline system includes:

[0031] Get current traffic M out and the flow rate M at the previous moment old ;

[0032] Based on the current flow M oit and the flow rate M at the previous moment old Get traffic changes in dM;

[0033] Obtain the calibrated gain coefficient kM;

[0034] Based on the calibrated gain coefficient kM, flow rate change dM, and current flow rate M out Predict the flow rate M at the next moment. de ;

[0035] Based on the predicted flow M at the next moment de Information used for hydrogen fuel flow requirements.

[0036] Where dM=M out -M old M de =M out +dM*kM.

[0037] Furthermore, the process of generating information for regulating the opening of the pipeline system based on information about hydrogen fuel pressure demand and hydrogen fuel flow rate demand includes:

[0038] Formula for obtaining the opening degree:

[0039] based on and Formula for obtaining the opening degree:

[0040] in,

[0041] R represents the gas constant in the ideal gas law; the ideal gas law is PV = nRT;

[0042] V represents the volume of the voltage regulating chamber;

[0043] A indicates the opening degree of the pressure regulating valve;

[0044] T in This indicates the inlet temperature information of the piping system;

[0045] P de This indicates information about pressure and demand.

[0046] M de This indicates information on hydrogen fuel flow demand.

[0047] M out Indicates the flow rate at the outlet;

[0048] P in This indicates the inlet pressure of the pipeline system;

[0049] Indicates the pressure ratio across the pressure regulating valve The function.

[0050] According to three aspects of the present invention, a hydrogen fuel supply pressure control device is provided, the hydrogen fuel supply pressure control device comprising:

[0051] The pressure demand module is used to obtain information on the engine's hydrogen fuel pressure demand.

[0052] The flow demand module is used to obtain information on the hydrogen fuel flow demand in the pipeline system;

[0053] The opening information module is used to generate information on the opening adjustment of the pressure regulating valve in the regulating pipeline system based on information on hydrogen fuel pressure demand and hydrogen fuel flow demand.

[0054] The pressure closed-loop module is used to perform pressure closed-loop control based on information about hydrogen fuel pressure requirements.

[0055] The flow closed-loop module is used to control the flow closed loop based on information about the hydrogen fuel flow demand.

[0056] According to four aspects of the present invention, an electronic device is provided, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0057] The memory stores a computer program that, when executed by the processor, causes the processor to perform the steps of the hydrogen fuel supply pressure control method.

[0058] According to five aspects of the present invention, a computer-readable storage medium is provided, comprising: storing a computer program executable by an electronic device, wherein when the computer program is run on the electronic device, the electronic device performs the steps of the hydrogen fuel supply pressure control method.

[0059] According to six aspects of the present invention, a vehicle is provided, comprising:

[0060] Electronic equipment for implementing the steps of the hydrogen fuel supply pressure control method;

[0061] The processor runs a program that, when the program is running, executes the steps of the hydrogen fuel supply pressure control method based on data output from the electronic device.

[0062] A storage medium for storing a program that, when running, executes the steps of the hydrogen fuel supply pressure control method in response to data output from an electronic device.

[0063] The above solution achieves the following beneficial technical effects:

[0064] This application controls both pressure and flow by adjusting the opening of the pressure regulator, thereby satisfying both pressure and flow requirements.

[0065] This application achieves stable control of both pressure and flow by isolating the pressure regulating valve and the engine hydrogen injector in a pressure stabilizing chamber. Attached Figure Description

[0066] Figure 1 This is a structural diagram of a hydrogen fuel supply pressure control system provided in one or more embodiments of the present invention.

[0067] Figure 2 This is a flowchart of a hydrogen fuel supply pressure control method provided by one or more embodiments of the present invention.

[0068] Figure 3 This is a structural diagram of a hydrogen fuel supply pressure control device provided in one or more embodiments of the present invention.

[0069] Figure 4 This is a schematic diagram of a hydrogen fuel engine system according to a specific embodiment of the present invention.

[0070] Figure 5 This is a schematic diagram of a hydrogen fuel cell engine control system according to a specific embodiment of the present invention.

[0071] Figure 6 This is a schematic diagram of a hydrogen fuel cell engine control system curve according to a specific embodiment of the present invention.

[0072] Figure 7 This is a block diagram of an electronic device for controlling hydrogen fuel supply pressure, provided in one or more embodiments of the present invention.

[0073] Reference numerals: 1. Engine ECU; 2. Controller; 3. Pressure regulating valve; 4. Pressure regulating chamber; 5. Flow meter; 6. Inlet pressure sensor; 7. Inlet temperature sensor; 8. Outlet pressure sensor; 9. Engine hydrogen injector;

[0074] 10. Demand pressure line; 11. Pressure control line of this scheme; 12. Pressure control line before improvement; 13. Flow line. Detailed Implementation

[0075] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0076] Figure 1 This is a structural diagram of a hydrogen fuel supply pressure control system provided in one or more embodiments of the present invention.

[0077] like Figure 1 The hydrogen fuel supply pressure control system shown includes:

[0078] Piping system and electrical control system;

[0079] Piping system, used to connect the hydrogen fuel to the engine;

[0080] The electronic control system is used to control the delivery of hydrogen fuel to the engine.

[0081] In this embodiment, the piping system includes: a pressure regulating valve, a pressure stabilizing chamber, a flow meter, an engine hydrogen injector, an engine, and a hydrogen fuel pipeline;

[0082] Pressure regulating valve, used for regulating hydrogen fuel pressure;

[0083] The pressure stabilizing chamber is used to stabilize hydrogen fuel pressure fluctuations;

[0084] Flow meter, used to provide feedback on the hydrogen fuel flow status;

[0085] Engine hydrogen injector, used to inject hydrogen fuel into the engine;

[0086] An engine that consumes hydrogen fuel and converts it into driving torque;

[0087] Hydrogen fuel pipeline, used for guiding hydrogen fuel in a pipeline system.

[0088] In this embodiment, the electronic control system includes: an engine ECU, an inlet pressure sensor, an outlet pressure sensor, an outlet temperature sensor, a controller, and a communication bus;

[0089] The engine ECU is used to generate information on the engine's hydrogen fuel pressure requirements.

[0090] Imported pressure sensors are used to provide feedback on the pressure status at the inlet of the pipeline system;

[0091] An outlet pressure sensor is used to provide feedback on the pressure status at the outlet of a pipeline system.

[0092] Imported temperature sensors are used to provide feedback on the real-time temperature status at the inlet of the pipeline system.

[0093] The controller is used for closed-loop control of hydrogen fuel delivery from the pipeline system to the engine.

[0094] The communication bus is used for data communication for the controller to acquire information and send commands.

[0095] Specifically, in one particular embodiment, such as Figure 4 As shown, the hydrogen fuel cell engine system includes: engine ECU1; controller 2; pressure regulating valve 3; pressure regulating chamber 4; flow meter 5; inlet pressure sensor 6; inlet temperature sensor 7; outlet pressure sensor 8; and engine hydrogen injector 9.

[0096] The controller 2 is the main control and calculation component of the hydrogen fuel cell engine system, receiving various signals and performing calculations. The pressure regulating valve is the main opening actuator, used to regulate the hydrogen supply pressure and flow rate. The flow meter is used to monitor and measure the hydrogen flow rate. The pressure sensor is used to measure the actual pressure on the pipeline. The inlet temperature sensor 7 is used to measure the actual temperature on the pipeline.

[0097] The pressure stabilizing chamber 4 is a pressure vessel of a certain volume. Its purpose is to buffer the pipeline pressure and prevent pressure instability when the flow rate changes drastically. The main feedback for pressure control in the above system is the outlet pressure sensor 8 located after the pressure stabilizing chamber.

[0098] Closed-loop control includes pressure closed-loop control.

[0099] Figure 2 This is a flowchart of a hydrogen fuel supply pressure control method provided by one or more embodiments of the present invention.

[0100] like Figure 2 The hydrogen fuel supply pressure control method shown includes:

[0101] Step S1: Obtain information on the engine's hydrogen fuel pressure requirements;

[0102] Step S2: Obtain information on the hydrogen fuel flow demand in the pipeline system;

[0103] Step S3: Based on the information on hydrogen fuel pressure demand and hydrogen fuel flow demand, generate information on the adjustment of the opening of the regulating pipeline system;

[0104] Step S4: Perform closed-loop pressure control based on information about hydrogen fuel pressure requirements;

[0105] Step S5: Perform closed-loop control of the flow rate based on the information on hydrogen fuel flow demand.

[0106] In this embodiment, obtaining information on the hydrogen fuel flow demand in the pipeline system includes:

[0107] Get current traffic M out and the flow rate M at the previous moment old ;

[0108] Based on the current flow M oit and the flow rate M at the previous moment old Get traffic changes in dM;

[0109] Obtain the calibrated gain coefficient kM;

[0110] Based on the calibrated gain coefficient kM, flow rate change dM, and current flow rate M out Predict the flow rate M at the next moment. de ;

[0111] Based on the predicted flow M at the next moment de Information used for hydrogen fuel flow requirements.

[0112] Where dM=M out -M old M de =M out +dM*kM.

[0113] In this embodiment, the information for adjusting the opening of the regulating pipeline system, based on the information on hydrogen fuel pressure demand and hydrogen fuel flow demand, includes:

[0114] Formula for obtaining the opening degree:

[0115] based on and Formula for obtaining the opening degree:

[0116] in,

[0117] R represents the gas constant in the ideal gas law; the ideal gas law is PV = nRT;

[0118] V represents the volume of the voltage regulating chamber;

[0119] A indicates the opening degree of the pressure regulating valve;

[0120] T in This indicates the inlet temperature information of the piping system;

[0121] P de This indicates information about pressure and demand.

[0122] M de This indicates information on hydrogen fuel flow demand.

[0123] M out Indicates the flow rate at the outlet;

[0124] P in This indicates the inlet pressure of the pipeline system;

[0125] Indicates the pressure ratio across the pressure regulating valve The function.

[0126] Specifically: such as Figure 5 The hydrogen fuel cell engine control system shown performs the following steps.

[0127] Step 1: The engine ECU sends the injector pressure demand signal P de Transmitted to the controller;

[0128] Step 2: The controller receives the flow signal from the flow meter and determines the flow rate based on the current flow rate M. out and the flow rate M at the previous moment old The flow rate change dM is calculated, multiplied by the calibrated gain coefficient kM, and the flow rate M at the next moment is predicted. de ;

[0129] M de =M out +dM*kM;

[0130] dM=M out -M old ;

[0131] kM: Gain coefficient, set to a calibrable value, which in this invention is designed to be a temperature T. in The relevant curves.

[0132] Step 3: The controller determines the pressure requirement P. de and traffic demand M de Import pressure T in Calculate the opening degree A of the pressure regulating valve using the following formula;

[0133]

[0134] f(A): A function of the opening degree A of the pressure regulating valve;

[0135] Pressure ratio across the pressure regulating valve The function;

[0136] R: The gas constant in the ideal gas law (PV = nRT);

[0137] V: Volume of the voltage regulating chamber.

[0138] Step 4: The controller determines the actual pressure signal P on the pipeline. out and demand pressure P deThe pressure deviation ΔP is adjusted using a PI control to calculate P. fd The feedback is sent to step 3 to adjust the opening of the pressure regulating valve and perform pressure closed-loop operation;

[0139] ΔP=P de -P out ;

[0140]

[0141] P de =P de +P fd ;

[0142] Step 5: The controller calculates the flow rate M based on the feedback from the flow meter. out and demand flow M de The flow deviation ΔM is adjusted using PI control to calculate M. fd Adjust the opening of the pressure regulating valve to achieve flow closed-loop control.

[0143] ΔM=M de -M out ;

[0144]

[0145] M de =M de +M fd ;

[0146] PI regulation: A type of regulation that uses a linear control law with proportional and integral actions. It helps to accelerate system response, reduce overshoot, and overcome oscillations. K... p1 and K i1 K represents the proportional and integral coefficients for pressure regulation in step 4. p2 and K i2 These are the proportional and integral coefficients for flow regulation in step 5.

[0147] Step 6: Calculate the gain coefficient kM and pressure closed-loop K from the above steps. p1 and K i1 Flow closed loop K p2 and K i2 Perform calibration and strive to achieve the following Figure 6 The control effect of the medium demand pressure line 10.

[0148] This application uses the flow rate change rate to predict the flow rate change at the next moment and adjusts the opening of the pressure regulating valve in a timely manner, thereby improving the stability of the hydrogen supply pressure control on the test bench.

[0149] In this application, the opening calculation of the pressure regulating valve has two layers of closed-loop regulation: a pressure-based closed loop and a flow-based closed loop.

[0150] Among them, the gain coefficient kM needs to be calibrated, which can be designed as a one-dimensional curve related to temperature, or a two-dimensional map related to temperature and pressure.

[0151] The volume of the pressure stabilizing chamber affects the control of the final pressure and needs to be selected based on the actual pressure control performance, maximum flow rate, and other conditions.

[0152] Figure 3 This is a structural diagram of a hydrogen fuel supply pressure control device provided in one or more embodiments of the present invention.

[0153] like Figure 3 The hydrogen fuel supply pressure control device shown includes: a pressure demand module, a flow demand module, an opening information module, a pressure closed-loop module, and a flow closed-loop module.

[0154] The pressure demand module is used to obtain information on the engine's hydrogen fuel pressure demand.

[0155] The flow demand module is used to obtain information on the hydrogen fuel flow demand in the pipeline system;

[0156] The opening information module is used to generate information on the opening adjustment of the regulating pipeline system based on information on hydrogen fuel pressure demand and hydrogen fuel flow demand.

[0157] The pressure closed-loop module is used to perform pressure closed-loop control based on information about hydrogen fuel pressure requirements.

[0158] The flow closed-loop module is used to control the flow closed loop based on information about the hydrogen fuel flow demand.

[0159] It is worth noting that although this system only discloses the pressure demand module, flow demand module, opening information module, pressure closed-loop module, and flow closed-loop module, it does not mean that this device is limited to the above-mentioned basic functional modules. On the contrary, what this invention intends to express is that, based on the above-mentioned basic functional modules, those skilled in the art can add one or more functional modules in combination with existing technology to form an infinite number of embodiments or technical solutions. That is to say, this system is open rather than closed. It should not be assumed that the scope of protection of the claims of this invention is limited to the above-disclosed basic functional modules just because this embodiment only discloses a few basic functional modules.

[0160] Figure 7 This is a block diagram of an electronic device for controlling hydrogen fuel supply pressure, provided in one or more embodiments of the present invention.

[0161] like Figure 7As shown, this application provides an electronic device, including: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0162] The memory stores a computer program that, when executed by a processor, causes the processor to perform steps of a hydrogen fuel supply pressure control method.

[0163] This application also provides a computer-readable storage medium storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of a hydrogen fuel supply pressure control method.

[0164] This application also provides a vehicle, including:

[0165] Electronic equipment for implementing steps in a method for controlling hydrogen fuel supply pressure;

[0166] The processor runs a program that, when running, executes the steps of a hydrogen fuel supply pressure control method based on data output from electronic devices.

[0167] A storage medium for storing a program that, when running, executes steps of a hydrogen fuel supply pressure control method based on data output from an electronic device.

[0168] The communication bus mentioned in the above electronic devices can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not mean that there is only one bus or one type of bus.

[0169] The electronic device comprises a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on the operating system. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory. The operating system can be any one or more computer operating systems that control the electronic device through processes, such as Linux, Unix, Android, iOS, or Windows. Furthermore, in this embodiment of the invention, the electronic device can be a smartphone, tablet computer, or other handheld device, or a desktop computer, portable computer, or other electronic device; there is no particular limitation in this embodiment.

[0170] In this embodiment of the invention, the executing entity for electronic device control can be an electronic device itself, or a functional module within an electronic device capable of calling and executing a program. The electronic device can obtain the firmware corresponding to the storage medium. This firmware is provided by the supplier, and different storage media may have the same or different firmware; no limitation is made here. After obtaining the firmware corresponding to the storage medium, the electronic device can write this firmware into the storage medium; specifically, it burns the firmware corresponding to the storage medium into the storage medium. The process of burning the firmware into the storage medium can be implemented using existing technology, and will not be elaborated upon in this embodiment of the invention.

[0171] Electronic devices can also obtain reset commands corresponding to the storage media. The reset commands corresponding to the storage media are provided by the supplier. The reset commands corresponding to different storage media can be the same or different, and no restrictions are imposed here.

[0172] At this time, the storage medium of the electronic device is a storage medium on which the corresponding firmware has been written. The electronic device can respond to the reset command corresponding to the storage medium on which the corresponding firmware has been written, thereby resetting the storage medium on which the corresponding firmware has been written according to the reset command. The process of resetting the storage medium according to the reset command can be implemented by existing technology and will not be described in detail in this embodiment of the invention.

[0173] For ease of description, the above devices are described separately by function as various units and modules. Of course, in implementing this application, the functions of each unit and module can be implemented in one or more software and / or hardware.

[0174] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined.

[0175] For the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0176] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0177] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen fuel supply pressure control method characterized by, The hydrogen fuel supply pressure control method comprises: acquiring information of hydrogen fuel pressure demand of the engine; acquiring information of hydrogen fuel flow demand in the pipeline system; generating information of adjusting the opening degree of the pressure regulating valve of the pipeline system according to the information of hydrogen fuel pressure demand and the information of hydrogen fuel flow demand; wherein, the pressure closed loop control is performed according to the information of hydrogen fuel pressure demand; the flow closed loop control is performed according to the information of hydrogen fuel flow demand; wherein, the information of adjusting the opening degree of the pressure regulating valve of the pipeline system is generated according to the information of hydrogen fuel pressure demand and the information of hydrogen fuel flow demand, specifically comprising: acquiring the opening degree formula: Based on and , the opening degree formula is obtained: ; wherein, R represents the gas constant in the ideal gas state equation; the ideal gas state equation is PV = nRT; Vp represents the volume of the pressure stabilization chamber; represents the opening degree of the pressure regulating valve; represents the pipeline system inlet temperature information; represents pressure demand information; represents hydrogen fuel flow demand information; represents the flow rate of the outlet; P represents represents line system inlet pressure; represents a function of the pressure ratio before and after the pressure regulating valve. represents a function of the pressure ratio before and after the pressure regulating valve.

2. The hydrogen fuel supply pressure control method according to claim 1, characterized by the information of hydrogen fuel flow demand in the pipeline system comprises: acquiring current traffic and traffic at a previous time ; According to the current flow and the flow at the previous moment , the flow change is obtained; Acquiring a gain factor for calibration ; According to the calibrated gain coefficient , the flow change , and the current flow , the flow at the next time is predicted ; based on predicting the flow at the next time information for hydrogen fuel flow demand; wherein ; .

3. A hydrogen fuel supply pressure control system characterized by comprising: a hydrogen fuel supply pressure control system for realizing the hydrogen fuel supply pressure control method according to claim 1 or 2, comprising: a pipeline system and an electronic control system; the pipeline system is used for connecting the path of hydrogen fuel transmission to the engine; the electronic control system is used for controlling the state of hydrogen fuel transmission to the engine.

4. The hydrogen fuel supply pressure control system according to claim 3, characterized by the pipeline system comprises: a pressure regulating valve, a pressure stabilizing chamber, a flow meter, an engine hydrogen injector, an engine and a hydrogen fuel pipeline; the pressure regulating valve is used for hydrogen fuel pressure regulation; the pressure stabilizing chamber is used for stabilizing hydrogen fuel pressure fluctuation; the flow meter is used for feeding back the hydrogen fuel flow state; the engine hydrogen injector is used for injecting hydrogen fuel to the engine; the engine is used for consuming hydrogen fuel to convert into driving torque; 5. The hydrogen fuel supply pressure control system according to claim 4, characterized by the hydrogen fuel pipeline is used for guiding hydrogen fuel in the pipeline system. the electronic control system comprises: an engine ECU, an inlet pressure sensor, an outlet pressure sensor, an outlet temperature sensor, a controller and a communication bus; the engine ECU is used for generating hydrogen fuel pressure demand information of the engine; the inlet pressure sensor is used for feeding back the pressure state of the inlet of the pipeline system; the outlet pressure sensor is used for feeding back the pressure state of the outlet of the pipeline system; the inlet temperature sensor is used for feeding back the real-time temperature state of the inlet of the pipeline system; 6. A hydrogen fuel supply pressure control device characterized by comprising: the controller is used for closed loop control of hydrogen fuel transmission to the engine in the pipeline system; the communication bus is used for data communication of the controller to acquire information and send instructions. the hydrogen fuel supply pressure control device comprises: a pressure demand module for acquiring information of hydrogen fuel pressure demand of the engine; a flow demand module for acquiring information of hydrogen fuel flow demand in the pipeline system; an opening degree information module for generating information of adjusting the opening degree of the pressure regulating valve of the pipeline system according to the information of hydrogen fuel pressure demand and the information of hydrogen fuel flow demand; a pressure closed loop module for performing pressure closed loop control according to the information of hydrogen fuel pressure demand; a flow closed loop module for performing flow closed loop control according to the information of hydrogen fuel flow demand; Based on and , the opening degree formula is obtained: ; wherein, the information of adjusting the opening degree of the pressure regulating valve of the pipeline system is generated according to the information of hydrogen fuel pressure demand and the information of hydrogen fuel flow demand, specifically comprising: R represents the gas constant in the ideal gas state equation; the ideal gas state equation is PV = nRT; Vp represents the volume of the pressure stabilization chamber; represents the opening degree of the pressure regulating valve; represents the pipeline system inlet temperature information; represents pressure demand information; represents hydrogen fuel flow demand information; represents the flow rate of the outlet; P represents represents line system inlet pressure; represents a function of the pressure ratio across the pressure regulating valve. represents a function of the pressure ratio across the pressure regulating valve.

7. An electronic device, comprising: acquiring the opening degree formula: wherein, comprising: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete mutual communication through the communication bus; The memory stores a computer program which, when executed by the processor, causes the processor to execute the steps of the hydrogen fuel supply pressure control method according to any one of claims 1 to 2.

8. A computer-readable storage medium, characterized in that, comprising: The memory stores a computer program which, when executed by the processor, causes the processor to execute the steps of the hydrogen fuel supply pressure control method according to any one of claims 1 to 2.

9. A vehicle characterized by comprising: comprising: The memory stores a computer program which, when executed by the processor, causes the processor to execute the steps of the hydrogen fuel supply pressure control method according to any one of claims 1 to 2. The memory stores a computer program which, when executed by the processor, causes the processor to execute the steps of the hydrogen fuel supply pressure control method according to any one of claims 1 to 2. The memory stores a computer program which, when executed by the processor, causes the processor to execute the steps of the hydrogen fuel supply pressure control method according to any one of claims 1 to 2.

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