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

Abstract

The invention discloses a hydrogen fuel supply pressure control system, method and device and electronic equipment, and relates to the field of hydrogen fuel control. A piping system for connecting a path through which the hydrogen fuel is delivered to the engine; and the electric control system is used for controlling the state that the hydrogen fuel is conveyed to the engine. The method comprises the steps that information of engine hydrogen fuel pressure requirements is obtained; information of the hydrogen fuel flow demand in the pipeline system is obtained; according to the information of the hydrogen fuel pressure requirement and the information of the hydrogen fuel flow requirement, information for adjusting the opening degree of a pressure adjusting valve of the adjusting pipeline system is generated; wherein the pressure closed-loop control is performed according to the information of the hydrogen fuel pressure demand; and flow closed-loop control is carried out according to the information of the hydrogen fuel flow demand. By means of the scheme, the opening degree of the pressure regulator is controlled, pressure and flow are controlled at the same time, and the pressure requirement and the flow requirement are met. The pressure regulating valve and the engine hydrogen ejector are isolated through the pressure stabilizing cavity, so that the pressure and the flow are stably controlled.

Description

Technical Field

[0001] The present application relates to the field of hydrogen fuel control, and particularly to 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. Background Art

[0002] Currently, the main application methods of hydrogen energy are in transportation fields such as hydrogen fuel cells and hydrogen engines. Due to the special characteristics of hydrogen, to ensure use safety, etc., when developing powertrain products that use hydrogen as an energy supply source, manufacturers need to conduct a large number of tests in the early stage. During the test process, ensuring the hydrogen supply pressure is an urgent problem to be solved. Research shows that for a hydrogen engine, the working pressure of the hydrogen injector needs to be strictly controlled. In bench tests, usually one hydrogen source supplies hydrogen for multiple laboratories, and the pressure control system equipped for each bench can only meet the hydrogen supply demand under steady-state conditions. When the pressure required by the hydrogen injector is relatively low, due to the characteristics of low-pressure gas, when the working conditions change greatly, due to the flow rate change at the demand side, it will lead to unstable hydrogen supply pressure control. Too low pressure may cause abnormal combustion such as backfire because the injector cannot be normally opened, and too high pressure may cause damage to the injector, resulting in problems such as leakage.

[0003] Therefore, a hydrogen fuel supply pressure control solution is needed to automatically and reliably regulate pressure and flow rate to enable the engine to operate stably. Summary of the Invention

[0004] The purpose of the present 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, which can at least solve the above technical problem of regulating pressure and flow rate.

[0005] The present invention provides the following solutions:

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

[0007] A pipeline system and an electronic control system;

[0008] The pipeline system is used to connect the path for delivering hydrogen fuel to the engine;

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

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

[0011] The pressure regulating valve is used for hydrogen fuel pressure regulation;

[0012] A pressure stabilizing chamber for stabilizing the pressure fluctuation of hydrogen fuel;

[0013] A flowmeter for feeding back the flow state of hydrogen fuel;

[0014] An engine hydrogen injector for injecting hydrogen fuel into the engine;

[0015] An engine for consuming hydrogen fuel to convert it into driving torque;

[0016] A hydrogen fuel pipeline for guiding hydrogen fuel in the 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 hydrogen fuel pressure demand of the engine;

[0019] The inlet pressure sensor is used to feed back the pressure state at the inlet of the pipeline system;

[0020] The outlet pressure sensor is used to feed back the pressure state at the outlet of the pipeline system;

[0021] The inlet temperature sensor is used to feed back the real-time temperature state at the inlet of the pipeline system;

[0022] The controller is used for the closed-loop control of delivering hydrogen fuel in the pipeline system to the engine;

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

[0024] According to a second aspect of the present invention, a hydrogen fuel supply pressure control method is provided, and the hydrogen fuel supply pressure control method includes:

[0025] Obtain information on the hydrogen fuel pressure demand of the engine;

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

[0027] Generate information for adjusting the opening degree of the pipeline system according to the information on the hydrogen fuel pressure demand and the information on the hydrogen fuel flow demand;

[0028] Among them, pressure closed-loop control is performed according to the information on the hydrogen fuel pressure demand;

[0029] Flow closed-loop control is performed according to the information on the hydrogen fuel flow demand.

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

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

[0032] According to the current flow rate M oit and the flow rate M at the previous moment old , obtain the flow rate change dM;

[0033] Obtain the calibrated gain coefficient kM;

[0034] According to the calibrated gain coefficient kM, the flow rate change dM and the current flow rate M out , predict the flow rate M at the next moment de ;

[0035] Based on predicting the flow rate M at the next moment de , information for the hydrogen fuel flow rate demand.

[0036] Wherein, dM = M out - M old ; M de = M out + dM * kM.

[0037] Furthermore, the generating the information for adjusting the opening degree of the pipeline system according to the information on the hydrogen fuel pressure demand and the information on the hydrogen fuel flow rate demand includes:

[0038] Obtain the opening degree formula:

[0039] Based on and obtain the opening degree formula:

[0040] Wherein,

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

[0042] V represents the volume of the pressure stabilizing chamber;

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

[0044] T in represents the pipeline system inlet temperature information;

[0045] P de represents the pressure demand information;

[0046] M de represents the hydrogen fuel flow rate demand information;

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

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

[0049] represents the pressure ratio before and after the pressure regulating valve as a 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 includes:

[0051] A pressure demand module for obtaining information on the hydrogen fuel pressure demand of the engine;

[0052] A flow demand module for obtaining information on the hydrogen fuel flow demand in the pipeline system;

[0053] An opening information module for generating information for adjusting the opening of the pressure regulating valve in the pipeline system according to the information on the hydrogen fuel pressure demand and the information on the hydrogen fuel flow demand;

[0054] A pressure closed-loop module for performing pressure closed-loop control according to the information on the hydrogen fuel pressure demand;

[0055] A flow closed-loop module for performing flow closed-loop control according to the information on the hydrogen fuel flow demand.

[0056] According to four aspects of the present invention, an electronic device is provided, including: a processor, a communication interface, a memory, and a communication bus. Among them, the processor, the communication interface, and the memory complete mutual communication through the communication bus;

[0057] A computer program is stored in the memory. When the computer program is executed by the processor, the processor executes 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, including: a computer program stored therein that can be executed by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of the hydrogen fuel supply pressure control method.

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

[0060] An electronic device for implementing the steps of the hydrogen fuel supply pressure control method;

[0061] A processor, the processor runs a program, and when the program runs, it executes the steps of the hydrogen fuel supply pressure control method from the data output by 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 for data output from an electronic device.

[0063] Through the above solution, the following beneficial technical effects are obtained:

[0064] In this application, by controlling the opening degree of the pressure regulator, both the pressure and the flow rate are controlled simultaneously, meeting both the pressure demand and the flow rate demand.

[0065] In this application, the pressure regulator and the engine hydrogen injector are isolated by a pressure stabilizing chamber, enabling stable control of both the pressure and the flow rate. Description of the Drawings

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

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

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

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

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

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

[0072] Figure 7 is a block diagram of the structure of an electronic device for hydrogen fuel supply pressure control provided by one or more embodiments of the present invention.

[0073] Reference numerals in the drawings: 1, engine ECU; 2, controller; 3, pressure regulator; 4, pressure stabilizing 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 solution; 12, pressure control line before improvement; 13, flow rate line. Detailed Embodiments

[0075] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

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

[0077] As Figure 1 shown, the hydrogen fuel supply pressure control system includes:

[0078] A pipeline system and an electronic control system;

[0079] The pipeline system is used to connect the path for delivering hydrogen fuel to the engine;

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

[0081] In this embodiment, the pipeline 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] The pressure regulating valve is used for regulating the pressure of hydrogen fuel;

[0083] The pressure stabilizing chamber is used for stabilizing the pressure fluctuation of hydrogen fuel;

[0084] The flow meter is used for feeding back the flow state of hydrogen fuel;

[0085] The engine hydrogen injector is used for injecting hydrogen fuel into the engine;

[0086] The engine is used for consuming hydrogen fuel to convert it into driving torque;

[0087] The hydrogen fuel pipeline is used for guiding the hydrogen fuel in the 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 for generating the hydrogen fuel pressure demand information of the engine;

[0090] The inlet pressure sensor is used for feeding back the pressure state at the inlet of the pipeline system;

[0091] The outlet pressure sensor is used for feeding back the pressure state at the outlet of the pipeline system;

[0092] The inlet temperature sensor is used for feeding back the real-time temperature state at the inlet of the pipeline system;

[0093] A controller for closed-loop control of delivering hydrogen fuel in a pipeline system to an engine;

[0094] A communication bus for data communication for the controller to obtain information and send instructions.

[0095] Specifically, in a specific embodiment, as Figure 4 shown, the hydrogen fuel engine system includes: an engine ECU 1; a controller 2; a pressure regulating valve 3; a pressure stabilizing chamber 4; a flowmeter 5; an inlet pressure sensor 6; an inlet temperature sensor 7; an outlet pressure sensor 8; and an engine hydrogen injector 9.

[0096] Among them, the controller 2 is the main control operation component of the hydrogen fuel engine system, receiving various signals and performing calculations. The pressure regulating valve is the main opening execution component for regulating the hydrogen supply pressure and flow rate. The flowmeter 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 with a certain volume, and its purpose is to buffer the pipeline pressure to avoid pipeline pressure instability when the flow rate changes sharply. The main feedback basis for pressure control in the above system is the outlet pressure sensor 8 arranged behind the pressure stabilizing chamber.

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

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

[0100] As Figure 2 shown, the hydrogen fuel supply pressure control method includes:

[0101] Step S1, obtaining information on the hydrogen fuel pressure demand of the engine;

[0102] Step S2, obtaining information on the hydrogen fuel flow rate demand in the pipeline system;

[0103] Step S3, generating information for regulating the opening of the pipeline system according to the information on the hydrogen fuel pressure demand and the information on the hydrogen fuel flow rate demand;

[0104] Step S4, performing pressure closed-loop control according to the information on the hydrogen fuel pressure demand;

[0105] Step S5, performing flow closed-loop control according to the information on the hydrogen fuel flow rate demand.

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

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

[0108] According to the current flow rate M oit and the flow rate M at the previous moment old , obtain the flow rate change dM;

[0109] Obtain the calibrated gain coefficient kM;

[0110] According to the calibrated gain coefficient kM, the flow rate change dM and the current flow rate M out , predict the flow rate M at the next moment de ;

[0111] Based on the predicted flow rate M at the next moment de , for the information of hydrogen fuel flow rate demand.

[0112] Wherein, dM = M out - M old ; M de = M out + dM * kM.

[0113] In this embodiment, according to the information of hydrogen fuel pressure demand and the information of hydrogen fuel flow rate demand, generating the information for adjusting the opening degree of the pipeline system includes:

[0114] Obtain the opening degree formula:

[0115] Based on and obtain the opening degree formula:

[0116] Wherein,

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

[0118] V represents the volume of the pressure stabilizing chamber;

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

[0120] T in represents the pipeline system inlet temperature information;

[0121] P de represents the pressure demand information;

[0122] M de represents the hydrogen fuel flow rate demand information;

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

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

[0125] represents the pressure ratio before and after the pressure regulating valve function.

[0126] Specifically: as Figure 5 shown in the hydrogen fuel engine control system, the following steps are executed.

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

[0128] Step 2: The controller receives the flow signal of the flowmeter and calculates the flow change dM based on the current flow rate M out and the flow rate M old at the previous moment, multiplies it by the calibrated gain coefficient kM, and predicts the flow rate M de at the next moment;

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

[0130] dM = M out - M old ;

[0131] kM: gain coefficient, set to a calibratable value, designed as a curve related to a temperature T in in the present invention.

[0132] Step 3: The controller calculates the opening degree A of the pressure regulating valve according to the pressure demand P de and the flow rate demand M de , and the inlet pressure T in according to the following formula;

[0133]

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

[0135] pressure ratio before and after the pressure regulating valve function;

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

[0137] V: volume of the pressure stabilizing chamber.

[0138] Step 4: The controller based on the actual pressure signal P on the pipeline out and the demand pressure P de, perform PI regulation on the pressure deviation ΔP to calculate P fd , feedback it to step 3, adjust the opening of the pressure regulating valve, and perform pressure closed-loop control;

[0139] ΔP = P de - P out ;

[0140]

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

[0142] Step 5: The controller, based on the flow rate M out fed back by the flow meter and the required flow rate M de , perform PI regulation on the flow rate deviation ΔM to calculate M fd , adjust the opening of the pressure regulating valve, and perform flow rate closed-loop control.

[0143] ΔM = M de - M out ;

[0144]

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

[0146] PI regulation: A regulation method, a linear regulation law with proportional and integral actions, which helps to accelerate the system response speed, reduce overshoot, overcome oscillation, etc. Among them, K p1 and K i1 are the pressure regulation proportional coefficient and integral coefficient in step 4, and K p2 and K i2 are the flow rate regulation proportional coefficient and integral coefficient in step 5.

[0147] Step 6: Calibrate the calibration gain coefficient kM, the pressure closed-loop K p1 and K i1 , the flow rate closed-loop K p2 and K i2 in the above steps, and strive to achieve the control effect of the required pressure line 10 in Figure 6 below.

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

[0149] In this application, the opening calculation of the pressure regulating valve has two-layer closed-loop regulation, namely the closed-loop based on pressure and the closed-loop based on flow rate.

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

[0151] Among them, the volume of the voltage stabilizing chamber affects the control of the final pressure, and it needs to be selected according to conditions such as the actual control performance of the actual pressure and the maximum flow rate.

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

[0153] Such as 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 hydrogen fuel pressure demand of the engine;

[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 for adjusting the opening of the pipeline system according to the information on the hydrogen fuel pressure demand and the information on the hydrogen fuel flow demand;

[0157] The pressure closed-loop module is used to perform pressure closed-loop control according to the information on the hydrogen fuel pressure demand;

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

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

[0160] Figure 7 is a structural block diagram of an electronic device for hydrogen fuel supply pressure control provided by one or more embodiments of the present invention.

[0161] Such as Figure 7As shown, the present application provides an electronic device, including: a processor, a communication interface, a memory, and a communication bus. Among them, the processor, the communication interface, and the memory complete mutual communication through the communication bus;

[0162] The memory stores a computer program. When the computer program is executed by the processor, the processor is caused to execute the steps of a hydrogen fuel supply pressure control method.

[0163] The present application also provides a computer-readable storage medium that stores a computer program executable by an electronic device. When the computer program runs on the electronic device, the electronic device is caused to execute the steps of a hydrogen fuel supply pressure control method.

[0164] The present application also provides a vehicle, including:

[0165] An electronic device for implementing the steps of a hydrogen fuel supply pressure control method;

[0166] A processor that runs a program. When the program runs, it executes the steps of a hydrogen fuel supply pressure control method on the data output from the electronic device;

[0167] A storage medium for storing a program. When the program runs, it executes the steps of a hydrogen fuel supply pressure control method on the data output from the electronic device.

[0168] The communication bus mentioned in the above electronic device may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience in representation, only a thick line is shown in the figure, but it does not mean that there is only one bus or one type of bus.

[0169] The electronic device includes 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, Central Processing Unit), a memory management unit (MMU, Memory Management Unit), and memory. The operating system can be any one or more computer operating systems that control the electronic device through processes. For example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system, etc. And in the embodiments of the present invention, the electronic device can be a handheld device such as a smart phone or a tablet computer, or an electronic device such as a desktop computer or a portable computer. The embodiments of the present invention do not particularly limit this.

[0170] The execution subject of the electronic device control in the embodiments of the present invention can be the electronic device, or a functional module in the electronic device that can call and execute a program. The electronic device can obtain the firmware corresponding to the storage medium, and the firmware corresponding to the storage medium is provided by the supplier. The firmware corresponding to different storage media can be the same or different, and this is not limited here. After the electronic device obtains the firmware corresponding to the storage medium, it can write the firmware corresponding to the storage medium 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 by existing technologies and will not be elaborated in the embodiments of the present invention.

[0171] The electronic device can also obtain the reset command corresponding to the storage medium, and the reset command corresponding to the storage medium is provided by the supplier. The reset commands corresponding to different storage media can be the same or different, and this is not limited here.

[0172] At this time, the storage medium of the electronic device is the storage medium written with the corresponding firmware. The electronic device can respond to the reset command corresponding to the storage medium in the storage medium written with the corresponding firmware, so that the electronic device resets the storage medium written with the corresponding firmware according to the reset command corresponding to the storage medium. The process of resetting the storage medium according to the reset command can be implemented by existing technologies and will not be elaborated in the embodiments of the present invention.

[0173] For the convenience of description, when describing the above device, it is divided into various units and modules according to functions for description. Of course, when implementing the present application, the functions of each unit and module can be implemented in the same or multiple software and / or hardware.

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

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

[0176] From the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present 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 for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of the present application.

[0177] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements 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 system, characterized in that, The hydrogen supply pressure control system includes: a pipeline system and an electronic control system; The pipeline system is used to connect the path for hydrogen fuel to be transmitted to the engine; The electronic control system is used to control the state of hydrogen fuel transmitted to the engine.

2. The hydrogen fuel supply pressure control system according to claim 1, characterized in that The pipeline system includes: 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 regulating the pressure of hydrogen fuel; The pressure stabilizing chamber is used for stabilizing the pressure fluctuation of hydrogen fuel; The flow meter is used to feedback the flow state of hydrogen fuel; The engine hydrogen injector is used to inject hydrogen fuel into the engine; The engine is used to consume hydrogen fuel and convert it into driving torque; The hydrogen fuel pipeline is used for guiding the hydrogen fuel in the pipeline system.

3. The hydrogen fuel supply pressure control system according to claim 1, characterized in that, 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; The engine ECU is used to generate the hydrogen fuel pressure demand information of the engine; The inlet pressure sensor is used to feedback the pressure state at the inlet of the pipeline system; The outlet pressure sensor is used to feedback the pressure state at the outlet of the pipeline system; The inlet temperature sensor is used to feedback the real-time temperature state at the inlet of the pipeline system; The controller is used for the closed-loop control of hydrogen fuel transmitted from the pipeline system to the engine; The communication bus is used for data communication for the controller to obtain information and send instructions.

4. A hydrogen fuel supply pressure control method, characterized in that, The hydrogen fuel supply pressure control method includes: Obtaining the information of the hydrogen fuel pressure demand of the engine; Obtaining the information of the hydrogen fuel flow demand in the pipeline system; Generating the information for adjusting the opening of the pressure regulating valve in the pipeline system according to the information of the hydrogen fuel pressure demand and the information of the hydrogen fuel flow demand; Among them, pressure closed-loop control is performed according to the information of the hydrogen fuel pressure demand; Flow closed-loop control is performed according to the information of the hydrogen fuel flow demand.

5. The hydrogen fuel supply pressure control method according to claim 4, characterized in that, The obtaining of the information of the hydrogen fuel flow demand in the pipeline system includes: Obtain the current traffic M out and the traffic M at the previous moment old ; According to the current traffic M out and the traffic M at the previous moment old , obtain the traffic change dM; Obtaining the calibrated gain coefficient kM; Based on the calibrated gain coefficient kM, the flow rate change dM, and the current flow rate M out , predict the flow rate M at the next moment de ; Based on predicting the flow rate M at the next moment de , information on the hydrogen fuel flow rate demand. where dM = M out - M old ; M de = M out + dM * kM.

6. The hydrogen fuel supply pressure control method according to claim 5, characterized in that The generating of the information for adjusting the opening of the pipeline system according to the information of the hydrogen fuel pressure demand and the information of the hydrogen fuel flow demand includes: Obtaining the opening formula: Based on and obtain the opening formula: Among them, R represents the gas constant in the ideal gas state equation; the ideal gas state equation is PV = nRT; V represents the volume of the pressure stabilizing chamber; A represents the opening of the pressure regulating valve; T in Indicates the inlet temperature information of the pipeline system; P de Indicates pressure demand information; M de represents hydrogen fuel flow demand information; M out represents the flow rate at the outlet; P in represents the inlet pressure of the pipeline system; Indicates the pressure ratio before and after the pressure regulating valve of the function.

7. A hydrogen fuel supply pressure control device, characterized in that, The hydrogen fuel supply pressure control device includes: A pressure demand module, which is used to obtain the information of the hydrogen fuel pressure demand of the engine; A flow demand module, which is used to obtain the information of the hydrogen fuel flow demand in the pipeline system; An opening information module, which is used to generate the information for adjusting the opening of the pressure regulating valve in the pipeline system according to the information of the hydrogen fuel pressure demand and the information of the hydrogen fuel flow demand; A pressure closed-loop module, which is used to perform pressure closed-loop control according to the information of the hydrogen fuel pressure demand; A flow closed-loop module, which is used to perform flow closed-loop control according to the information of the hydrogen fuel flow demand.

8. An electronic device, characterized in that, It includes: A processor, a communication interface, a memory, and a communication bus. Among them, the processor, the communication interface, and the memory complete mutual communication through the communication bus; The memory stores a computer program. When the computer program is executed by the processor, the processor executes the steps of the hydrogen fuel supply pressure control method according to any one of claims 4 to 6.

9. A computer-readable storage medium, characterized in that, It includes: It stores a computer program executable by an electronic device. When the computer program runs on the electronic device, it causes the electronic device to execute the steps of the hydrogen fuel supply pressure control method described in any one of claims 4 to 6.

10. A vehicle, characterized in that, It includes: An electronic device for implementing the steps of the hydrogen fuel supply pressure control method described in any one of claims 4 to 6; A processor that runs a program. When the program runs, it executes the steps of the hydrogen fuel supply pressure control method described in any one of claims 4 to 6 on the data output from the electronic device; A storage medium for storing a program. When the program runs, it executes the steps of the hydrogen fuel supply pressure control method described in any one of claims 4 to 6 on the data output from the electronic device.

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