Vehicle-mounted hydrogen storage system control method and related equipment

Abstract

The invention discloses a vehicle-mounted hydrogen storage system control method and related equipment, and relates to the technical field of new energy vehicles, and the method comprises the following steps: detecting a state trigger signal for a vehicle-mounted hydrogen storage system in real time; determining a system working state of the vehicle-mounted hydrogen storage system based on the state trigger signal; and executing a corresponding valve control instruction according to the system working state. According to the vehicle-mounted hydrogen storage system, intelligent control and automatic operation of the vehicle-mounted hydrogen storage system can be realized through standardized system state and real-time signal detection, and the vehicle-mounted hydrogen storage system has high adaptability, easy maintainability and good expansion compatibility.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle technology, and more specifically, to a vehicle-mounted hydrogen storage system control method and related equipment. Background Art

[0002] With the widespread adoption of hydrogen energy in new energy vehicles, onboard hydrogen storage systems, a crucial component in ensuring a safe and efficient hydrogen supply, have become increasingly important. The intelligence of their control strategies is directly linked to the overall vehicle's energy efficiency and operational safety. In fuel cell vehicles, in particular, the coordinated control of the hydrogen storage valve and downstream pressure reducing valve in hydrogen storage tanks, which serve as the storage medium for high-pressure gas, is crucial. This requires ensuring both responsive hydrogen supply under varying operating conditions and ensuring the reliability and safety of the entire system.

[0003] However, the control methods of on-board hydrogen storage systems in the existing technology generally have problems such as single control logic and rough state management. Some systems rely solely on simple electrical signal triggers to realize the opening and closing operations of the bottle valve and the pressure reducing valve, and lack detailed identification and dynamic switching of the system's operating status; for example, in different stages such as vehicle power-on, self-test, hydrogen supply or failure, the control system cannot accurately judge the current state, resulting in a deviation between valve control and actual operating requirements; in addition, the traditional control strategy lacks a closed-loop design for the logic of transition between states, and does not have comprehensive control over the timing, safety and responsiveness of valve operations, thereby affecting the hydrogen supply stability and hydrogen use safety of the entire vehicle in key scenarios such as cold start, dynamic acceleration or abnormal handling. In other words, there are technical problems in the relevant technology such as untimely hydrogen supply response, poor safety, fragile components and insufficient safety of the on-board hydrogen storage system. Summary of the Invention

[0004] The Summary of the Invention section of this application introduces a series of simplified concepts that will be further described in detail in the Detailed Description of the Invention section. The Summary of the Invention section of this application is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] The vehicle-mounted hydrogen storage system control method and related equipment provided in this application can realize intelligent control and automated operation of the vehicle-mounted hydrogen storage system through standardized system status and real-time signal detection, and have high adaptability, easy maintainability and good expansion compatibility.

[0006] In a first aspect, the present application provides a method for controlling a vehicle-mounted hydrogen storage system, which is applied to a vehicle-mounted hydrogen storage system, wherein the vehicle-mounted hydrogen storage system includes a hydrogen storage bottle, a hydrogen storage bottle valve and a pressure reducing valve, wherein the hydrogen storage bottle valve is arranged at the gas outlet end of the hydrogen storage bottle, and the pressure reducing valve is arranged downstream of the hydrogen storage bottle valve. The method for controlling the vehicle-mounted hydrogen storage system includes: real-time detection of a status trigger signal for the vehicle-mounted hydrogen storage system, wherein the status trigger signal includes a power-on signal, a controller wake-up signal, a self-test completion signal, a hydrogen supply request signal, a replacement request signal and a fault level signal; based on the status trigger signal, determining the system working state of the vehicle-mounted hydrogen storage system, wherein the system working state is any one of a sleep state, a self-test state, a self-test timeout state, a ready state, a hydrogen supply state, a fault state and a replacement state; executing corresponding valve control instructions according to the system working state, wherein the valve control instructions are used to instruct the opening and closing operations of the hydrogen storage bottle valve and the pressure reducing valve.

[0007] In some embodiments, the system operating state of the on-board hydrogen storage system is determined based on the state trigger signal, including: when the power-on signal is detected, the system operating state is determined to be the sleep state; after detecting the power-on signal, when the controller wake-up signal is detected, the system operating state is updated to the self-test state; after detecting the controller wake-up signal, when the self-test execution time exceeds a preset time threshold, the system operating state is updated to the self-test timeout state; after detecting the controller wake-up signal, when the self-test completion signal is detected, the system operating state is updated to the ready state; after detecting the self-test completion signal, when the hydrogen supply request signal is detected, the system operating state is updated to the hydrogen supply state; when the fault level signal is detected to indicate a conventional level fault, the system operating state is updated to the fault state; when the replacement request signal is detected, the system operating state is updated to the replacement state.

[0008] In some embodiments, the status trigger signal also includes a key power loss signal; determining the system operating state of the on-board hydrogen storage system based on the status trigger signal also includes: in the hydrogen supply state or the ready state, when the key power loss signal is detected, updating the system operating state to the fault state; in the hydrogen supply state, the ready state or the fault state, when the fault level signal is detected to indicate an emergency stop level fault, updating the system operating state to the self-test state.

[0009] In some embodiments, the corresponding valve control instructions are executed according to the system working state, including: when the system working state is updated from the sleep state to the self-test state, the hydrogen storage bottle valve and the pressure reducing valve are opened in sequence, and the pressure reducing valve and the hydrogen storage bottle valve are closed in sequence after a first preset time period; when the system working state is updated to the ready state or the self-test timeout state, the hydrogen storage bottle valve and the pressure reducing valve are kept in a closed state; when the system working state is updated to the replacement state or the hydrogen supply state, the hydrogen storage bottle valve and the pressure reducing valve are opened in sequence; when the system working state is updated from the self-test state to the hydrogen supply state, the hydrogen storage bottle valve and the pressure reducing valve are opened in sequence.

[0010] In some embodiments, executing corresponding valve control instructions according to the system operating state also includes: when the system operating state is updated to the fault state, closing the pressure reducing valve and the hydrogen storage bottle valve in sequence after the fuel cell system is shut down.

[0011] In some embodiments, when the system operating state is updated to the fault state, the pressure reducing valve and the hydrogen storage bottle valve are closed in sequence after the fuel cell system is shut down, including: when the system operating state is updated to the fault state, the fuel-electric system shutdown signal is detected; when the fuel-electric system shutdown signal is detected, or when the fuel-electric system shutdown signal is still not detected when the second preset time expires, the pressure reducing valve and the hydrogen storage bottle valve are closed in sequence.

[0012] In some embodiments, the vehicle-mounted hydrogen storage system control method further includes: when the system operating state is updated to the replacement state, stopping detection of the fault level signal.

[0013] In some embodiments, the vehicle-mounted hydrogen storage system control method further includes: obtaining the volume parameters and hydrogen flow characteristic parameters of the pipeline between the hydrogen storage bottle valve and the pressure reducing valve; calculating the theoretical time required for hydrogen to fill the pipeline based on the volume parameters and the flow characteristic parameters; and configuring the first preset time to be K times the theoretical time, where K is a safety factor greater than 1.

[0014] In the second aspect, the present application also provides a vehicle-mounted hydrogen storage system control device, which is applied to the vehicle-mounted hydrogen storage system, the vehicle-mounted hydrogen storage system including a hydrogen storage bottle, a hydrogen storage bottle valve and a pressure reducing valve, the hydrogen storage bottle valve is arranged at the gas outlet end of the hydrogen storage bottle, and the pressure reducing valve is arranged downstream of the hydrogen storage bottle valve, the vehicle-mounted hydrogen storage system control device includes: a signal detection unit, for detecting in real time a status trigger signal for the vehicle-mounted hydrogen storage system, wherein the status trigger signal includes a power-on signal, a controller wake-up signal, a self-test completion signal, a hydrogen supply request signal, a replacement request signal and a fault level signal; a status determination unit, for determining the system working state of the vehicle-mounted hydrogen storage system based on the status trigger signal, wherein the system working state is any one of a sleep state, a self-test state, a self-test timeout state, a ready state, a hydrogen supply state, a fault state and a replacement state; a valve control unit, for executing corresponding valve control instructions according to the system working state, wherein the valve control instructions are used to instruct the opening and closing operations of the hydrogen storage bottle valve and the pressure reducing valve.

[0015] In a third aspect, the present application further provides an electronic device comprising: a memory and a processor, wherein the processor is configured to implement the steps of the vehicle-mounted hydrogen storage system control method described in the first aspect when executing a computer program stored in the memory.

[0016] In a fourth aspect, the present application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the vehicle-mounted hydrogen storage system control method described in the first aspect.

[0017] In a fifth aspect, the present application also provides a computer program product, including a computer program or computer executable instructions. When the computer program or computer executable instructions are executed by a processor, the vehicle-mounted hydrogen storage system control method provided in the embodiment of the present application is implemented.

[0018] In summary, the present application automatically determines the current state of the system by real-time detection of status trigger signals, such as power-on signals, controller wake-up, self-test completion, etc., and can accurately control the opening and closing of the hydrogen storage bottle valve and the pressure reducing valve without manual intervention, which can realize the intelligent and automated operation of the hydrogen storage system and improve the overall operating efficiency; the system status is standardized into seven states, such as sleep, self-test, preparation, hydrogen supply, replacement, and fault, so that the operation process of the system is more standardized and structured, and each state has a clear valve control logic, so that the response of the system under different working conditions is clearer and controllable, which is helpful for fault diagnosis and function expansion; the control method is applicable to a variety of on-board hydrogen storage system structures, and has good scalability and platform compatibility. The unified state management and universal control strategy enable the method to be applied to different models or hydrogen storage devices, which is convenient for batch deployment and maintenance. In summary, the on-board hydrogen storage system control method provided by the present application can realize the intelligent control and automated operation of the on-board hydrogen storage system by standardizing the system status and real-time signal detection, and has high adaptability, easy maintenance and good expansion compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present description. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0020] Figure 1 A flow chart of a method for controlling a vehicle-mounted hydrogen storage system provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of a vehicle-mounted hydrogen storage system and a fuel cell system provided in an embodiment of the present application;

[0022] Figure 3 A schematic diagram of the structure of a vehicle-mounted hydrogen storage system control device provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0024] Among them, 400 is the on-board hydrogen storage system; 410 is the hydrogen storage bottle; 420 is the hydrogen storage bottle valve; 430 is the first pressure sensor; 440 is the pressure reducing valve; 450 is the second pressure sensor; 460 is the manual discharge valve; 470 is the pipeline; 480 is the fuel cell system. DETAILED DESCRIPTION

[0025] Terms in the specification, claims, and drawings of this application, such as "first," "second," "third," "fourth," and the like (if any), are used to distinguish between similar objects, rather than to describe a particular order or precedence. Therefore, it is understood that these terms can be used interchangeably where appropriate, so that the embodiments described can be implemented in a different order, unless otherwise specified in the drawings or descriptions. In addition, the terms "is" and "has" and any variations thereof in this application are intended to cover all possible constituent elements on a non-exclusive basis. For example, a process, method, system, product, or apparatus that includes several steps or units is not necessarily limited to the steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed, or steps or units that are inherent to the process, method, product, or apparatus.

[0026] In this application, a "module" or "unit" refers to a computer program or part of a computer program that has a specific function and works in conjunction with other related parts to achieve a predetermined goal. These modules or units can be implemented by software, hardware (such as processing circuits or memories), or a combination of the two. One or more processors or memories can implement one or more modules or units. At the same time, each module or unit can also be part of a larger module or unit.

[0027] The technical solutions in this application will be described in detail below in conjunction with the accompanying drawings in the embodiments. It should be noted that the embodiments described are only part of this application, not all embodiments. In the following description, the "some embodiments" mentioned are only a subset of all possible embodiments, which may be the same or different subsets, and different embodiments can be combined with each other without conflict.

[0028] Figure 1 This is a flow chart of a method for controlling a vehicle-mounted hydrogen storage system provided in an embodiment of the present application. Figure 1 The vehicle-mounted hydrogen storage system control method provided in the embodiment of the present application is applied to the vehicle-mounted hydrogen storage system. The vehicle-mounted hydrogen storage system includes a hydrogen storage bottle, a hydrogen storage bottle valve, and a pressure reducing valve. The hydrogen storage bottle valve is arranged at the gas outlet end of the hydrogen storage bottle, and the pressure reducing valve is arranged downstream of the hydrogen storage bottle valve. The vehicle-mounted hydrogen storage system control method may include the following steps 101 to 103:

[0029] Step 101: Real-time detection of status trigger signals for the vehicle-mounted hydrogen storage system, wherein the status trigger signals may include a power-on signal, a controller wake-up signal, a self-test completion signal, a hydrogen supply request signal, a replacement request signal, and a fault level signal;

[0030] In some examples, an on-board hydrogen storage system refers to a complete hardware system used to store, manage, and supply hydrogen in new energy vehicles. It can include components such as hydrogen storage bottles, hydrogen storage bottle valves, pressure reducing valves, pipelines, and sensors. A hydrogen storage bottle refers to a container used to store high-pressure hydrogen in an on-board hydrogen storage system. It can be made of carbon fiber wound composite materials and can withstand operating pressures up to 70 MPa. Multiple hydrogen storage bottles can be integrated into the on-board hydrogen storage system as the energy source required for vehicle endurance. A hydrogen storage bottle valve refers to a valve body assembly installed at the gas outlet of a hydrogen storage bottle. It can include a shut-off valve, check valve, safety valve, and sensor interface to control the flow of hydrogen, ensuring the safety and control of hydrogen storage. The pressure reducing valve is located downstream of the hydrogen storage bottle valve and is used to reduce the high-pressure hydrogen in the hydrogen storage bottle to the operating pressure required by the fuel cell system, such as from 70 MPa to 1 MPa. For example, hydrogen can flow from the hydrogen storage bottle and be stably output to the engine hydrogen supply module through the pressure reducing valve. The value of the hydrogen pressure in the pipeline between the hydrogen storage bottle valve assembly and the pressure reducing valve reflects the actual gas pressure of the current hydrogen storage bottle. It is a key variable for estimating the amount of hydrogen and can be collected by a pressure sensor. The state trigger signal refers to a key control signal triggered by an external or internal event of the system. It is used to trigger the on-board hydrogen storage system to enter or switch to a specific operating state. It serves as the basis for judging the system state and is a prerequisite for realizing automatic control logic. The power-on signal indicates that the vehicle power system starts to supply power to the hydrogen storage system. It can correspond to the state after the vehicle key is turned on or the power control module is started. The state trigger signal can be obtained by reading the voltage change signal on the high-voltage control box (HVDC) or the low-voltage power distribution module (PDU); for example, when the driver presses the start button or inserts the key, the system voltage rises to the set threshold (such as 12V), which is determined to be a power-on signal. The controller wake-up signal is used to indicate that the on-board controller has been activated from sleep or standby mode and is ready to enter the workflow. The controller wake-up signal can be obtained by determining the controller wake-up signal through a wake-up message (Wake-up Frame) on the CAN bus, or by an external control module such as the vehicle controller sending a specific level signal to the hydrogen storage control module to determine the controller wake-up signal. For example, when the vehicle detects a driving intention such as opening a door or stepping on the brakes, it sends a wake-up frame (power-on signal) to the on-board hydrogen storage system via the CAN bus. The self-test completion signal indicates that the on-board hydrogen storage system has completed the self-test process of hydrogen storage devices such as hydrogen storage bottle valves, pressure reducing valves, pressure sensors, and communication links, confirming that there are no major faults and can enter the ready state. The self-test completion signal can be obtained by the on-board hydrogen storage system's own diagnostic program actively setting a flag bit after completing various checks. For example, after power is turned on, if the bottle valve pressure, communication status, and internal temperature are all within the normal range, the self-test completion signal is sent.The hydrogen supply request signal indicates that the fuel cell or other hydrogen energy-consuming system needs to start supplying hydrogen. It is used to start the hydrogen path. The hydrogen supply request signal can be issued by the fuel cell controller or the vehicle controller. For example, when the fuel cell load increases, the fuel cell controller sends a hydrogen supply request signal to the on-board hydrogen storage system. The replacement request signal is used to prompt the system to perform a gas path replacement operation. Generally, it is used to discharge impurities or residual gas before and after maintenance or hydrogenation. It can be issued manually or automatically by the replacement program in the diagnostic tool, maintenance panel or control strategy. For example, the maintenance personnel clicks "Execute Hydrogen Replacement" on the vehicle HMI interface, and the system accepts the command and determines that the hydrogen replacement signal has been received. The fault level signal indicates the abnormal state detected in the system, and is divided into different fault levels such as normal faults and emergency shutdowns according to the severity, which affects the system operation strategy.

[0031] See also Figure 2, the figure shows the composition structure of a vehicle-mounted hydrogen storage system 400 and a fuel cell system 480 provided in an embodiment of the present application. Among them, the vehicle-mounted hydrogen storage system 400 includes a hydrogen storage bottle 410, a hydrogen storage bottle valve 420, a first pressure sensor 430, a pressure reducing valve 440, a second pressure sensor 450, a manual discharge valve 460, and a pipe 470 connecting the various components. The fuel cell system 480 is connected to the downstream of the manual discharge valve 460 for receiving hydrogen supply and performing electrical energy conversion. Specifically, the hydrogen storage bottle 410 is a high-pressure container for storing high-pressure hydrogen and is the core gas storage component of the vehicle-mounted hydrogen storage system 400. The hydrogen storage bottle valve 420 is installed at the outlet of the hydrogen storage bottle 410, and its interior can integrate functional modules such as electromagnetic shut-off valves, safety valves, and one-way valves to realize functions such as opening and closing control of hydrogen, safe pressure relief, and one-way flow blocking, to ensure the safe management of hydrogen under different operating conditions. The first pressure sensor 430 is installed downstream of the hydrogen storage bottle valve 420, in the high-pressure section, and is used to detect the hydrogen pressure at the outlet of the hydrogen storage bottle in real time, and upload the detection data to the control system to provide a basis for system status identification, hydrogen remaining estimation, etc. The pressure reducing valve 440 is connected in series in the high-pressure hydrogen pipeline, which can adjust the high-pressure hydrogen released by the hydrogen storage bottle to medium- and low-pressure hydrogen, ensuring that the subsequent system can safely receive and use hydrogen. The second pressure sensor 450 is set in the medium-pressure section between the pressure reducing valve 440 and the manual discharge valve 460. It is mainly used to detect the hydrogen pressure after pressure regulation. Its output signal can reflect whether the hydrogen supply is stable and whether the pressure reducing valve is working properly. The manual discharge valve 460 is installed at the end of the medium-pressure pipe section and is used to manually release the residual hydrogen in the medium-pressure section when the system is overhauled, maintained or abnormally shut down to improve system safety. The pipeline 470 runs through all the above-mentioned key components and constitutes a flow channel for hydrogen from high-pressure storage to low-pressure supply. Under this system structure, hydrogen is finally delivered from the hydrogen storage bottle 410 to the fuel cell system 480 via the hydrogen storage bottle valve 420, the pressure reducing valve 440 and the manual discharge valve 460. The fuel cell system 480 serves as a downstream gas consumption system for hydrogen. After receiving stable hydrogen, it can generate electrical energy through electrochemical reactions to provide energy for the vehicle's power system. During actual operation, the on-board controller can dynamically identify the operating status of the hydrogen storage system 400 based on the pressure data changes of the first pressure sensor 430 and the second pressure sensor 450, such as whether hydrogen is supplied, whether the self-test is completed, and whether the pressure reduction is normal; and accordingly control the opening and closing status of the hydrogen storage bottle valve 420 and the pressure reducing valve 440 to achieve precise regulation and supply of high-pressure hydrogen. At the same time, if it is detected that the fuel cell system 480 stops running, the control system can execute the corresponding shutdown process and release the residual gas through the manual discharge valve 460, thereby ensuring the safety and reliability of the entire hydrogen supply path.

[0032] By implementing step 101, the status trigger signal of the on-board hydrogen storage system is detected in real time, which can achieve rapid response and accurate identification of system status changes, and provide the necessary input premise for subsequent control strategies; step 101 covers a variety of trigger scenarios from power-on, controller wake-up to hydrogen supply request, replacement request and fault level, ensuring that the system can obtain accurate control basis in different operation stages; the judgment mechanism based on multi-source status signals helps to improve the system perception capability and automation level, reduce manual intervention, and improve the overall response efficiency and operation safety of the system, especially in the application scenario of multi-state complex switching of new energy vehicles.

[0033] Step 102: determining a system operating state of the on-vehicle hydrogen storage system based on the state trigger signal, wherein the system operating state is any one of a dormant state, a self-test state, a self-test timeout state, a ready state, a hydrogen supply state, a fault state, and a replacement state;

[0034] In some examples, the system operating state refers to the operating stage or control mode that the on-board hydrogen storage system is in at a specific moment. It is the basic judgment basis for the system's behavioral logic. The system operating state can be dynamically judged and switched by the controller based on sensor data, control signals, communication feedback, etc., to guide the execution of subsequent actions such as valve opening and closing, fault response, and hydrogen supply process. The sleep state is a low-power standby state when the on-board hydrogen storage system is powered on but not awakened. In the sleep state, the on-board hydrogen storage system control logic is not activated, all solenoid valves remain closed, and only the controller enters the monitoring mode, waiting for the wake-up signal input. The self-test state is the operating state in which the on-board hydrogen storage system performs a functional and safety self-test after receiving the wake-up signal. During the self-test process, the controller will test whether the hydrogen storage bottle valve, pressure reducing valve, and sensor modules are working properly, detect air tightness and electrical signal integrity, and determine whether the hydrogen supply preparation conditions are met. The self-test timeout state indicates that the self-test process is not completed within the set time (such as 60 seconds), and the on-board hydrogen storage system automatically enters a safety protection state. The self-test timeout state is used to avoid a self-test dead loop or potential risk expansion due to an abnormality in a certain module. The controller will actively terminate the hydrogen supply preparation process and keep the valve closed. The ready state is the standby state entered after the self-test is successfully completed, indicating that the on-board hydrogen storage system has the ability to supply hydrogen but has not yet received a hydrogen supply request signal; in the ready state, the on-board hydrogen storage system keeps the valve closed, maintains standby, and continuously monitors the hydrogen demand signal of the fuel cell or the entire vehicle. The hydrogen supply state is the operating state entered by the on-board hydrogen storage system after receiving the hydrogen supply request signal. The controller will open the hydrogen storage bottle valve and the pressure reducing valve in sequence to provide a stable hydrogen flow for the fuel cell. In the hydrogen supply state, the system needs to implement closed-loop regulation and safety monitoring to ensure that the hydrogen supply pressure, flow and temperature are within the set range. The fault state is a protective state entered upon detecting component anomalies, leaks, or communication anomalies in the on-board hydrogen storage system. The controller will terminate the hydrogen supply process, wait for confirmation of the fuel cell system shutdown signal, and then sequentially close the pressure reducing valve and hydrogen storage bottle valve to prevent further risk spread. The replacement state is a special operating mode in which the on-board hydrogen storage system performs gas replacement tasks (such as hydrogen discharge or nitrogen filling). It is commonly used in pre-hydrogenation preparation, inspection and maintenance, or safety switching scenarios. In the replacement state, the on-board hydrogen storage system will temporarily stop detecting fault-level signals to avoid false alarms caused by unstable gas signals during the replacement process.

[0035] By implementing step 102, the current system working status can be accurately determined based on the status trigger signal, and a clear operation process management mechanism can be established, so that the on-board hydrogen storage system can intelligently switch between multiple states such as sleep, self-test, hydrogen supply, fault, replacement, etc., to ensure that the actions in each stage are orderly and safe; this status determination logic can support the system to automatically adjust the strategy mode according to the operating environment and control requirements, thereby improving the stability, fault tolerance and adaptability of the entire system operation.

[0036] Step 103: Execute corresponding valve control instructions according to the system working state, wherein the valve control instructions are used to instruct the opening and closing operations of the hydrogen storage bottle valve and the pressure reducing valve;

[0037] In some examples, the valve control instruction is a specific opening and closing control signal issued to control the hydrogen storage bottle valve and the pressure reducing valve. It can exist in the form of a high / low level digital signal, a PWM signal, or a control frame of the CAN communication protocol. It is used to accurately control the on-off path of hydrogen in the on-board hydrogen storage system. The valve control instruction can be generated according to the preset logic or table lookup strategy (such as the state-action comparison table). The control software then automatically calls the corresponding control strategy according to the current system working state, outputs it to the drive circuit, and then controls the on-off of the solenoid valve; for example, if it is judged to be in the self-test state, a sequence of instructions is issued to open the hydrogen storage bottle valve first and then the pressure reducing valve. After judging the current working state of the system, the preset valve control logic will be automatically matched, and the corresponding opening and closing instructions will be issued, thereby dynamically controlling the hydrogen storage bottle valve and the pressure reducing valve to achieve intelligent management of the hydrogen pathway.

[0038] For example, when the on-board controller recognizes that the system has entered the "self-test state", it will obtain the corresponding control instructions through the table lookup logic, first control the electromagnetic driver to open the hydrogen storage bottle valve, delay for several milliseconds, and then open the pressure reducing valve. After a set period of time, the valve will be closed in the opposite direction. This allows hydrogen to flow briefly in the pipeline so that the sensor can collect pressure data for status confirmation or safety verification.

[0039] By implementing step 103, corresponding valve control instructions are executed according to the system working status, which can realize automatic opening and closing control of the hydrogen storage bottle valve and the pressure reducing valve under various working conditions, ensuring that the hydrogen flow process is accurate, safe and controllable; and can dynamically adjust the execution sequence, delay time and opening and closing actions according to the state machine or table lookup rules, thereby avoiding safety risks such as misfilling, leakage or overpressure.

[0040] In summary, the embodiment of the present application automatically determines the current state of the system by real-time detection of status trigger signals, such as power-on signals, controller wake-up, self-test completion, etc., and can accurately control the opening and closing of the hydrogen storage bottle valve and the pressure reducing valve without manual intervention, which can realize the intelligent and automated operation of the hydrogen storage system and improve the overall operating efficiency; the system status is standardized into seven states, such as sleep, self-test, preparation, hydrogen supply, replacement, and fault, so that the operation process of the system is more standardized and structured, and each state has a clear valve control logic, so that the response of the system under different working conditions is clearer and controllable, which is helpful for fault diagnosis and function expansion; the control method is applicable to a variety of on-board hydrogen storage system structures, and has good scalability and platform compatibility. The unified state management and universal control strategy enable the method to be applied to different models or hydrogen storage devices, which is convenient for batch deployment and maintenance. In summary, the on-board hydrogen storage system control method provided by the embodiment of the present application can realize the intelligent control and automated operation of the on-board hydrogen storage system by standardizing the system status and real-time signal detection, and has high adaptability, easy maintenance and good expansion compatibility.

[0041] In some embodiments, the aforementioned step 102 may include: when a power-on signal is detected, determining the system working state to be a sleep state; after detecting the power-on signal, when a controller wake-up signal is detected, updating the system working state to a self-test state; after detecting the controller wake-up signal, when the self-test execution time exceeds a preset time threshold, updating the system working state to a self-test timeout state; after detecting the controller wake-up signal, when a self-test completion signal is detected, updating the system working state to a ready state; after detecting the self-test completion signal, when a hydrogen supply request signal is detected, updating the system working state to a hydrogen supply state; when a fault level signal indicating a conventional level fault is detected, updating the system working state to a fault state; when a replacement request signal is detected, updating the system working state to a replacement state.

[0042] In some examples, when a power-on signal is detected, it indicates that the on-board hydrogen storage system is ready for power supply, but has not yet received an operation to wake up the controller. At this time, the system operating state is determined to be dormant and on standby for subsequent operations. For example, when the owner inserts the key or presses the start button, the 12V low-voltage system is powered on, which is determined to have received a power-on signal, and the system operating state is determined to be dormant. After detecting the power-on signal, when the controller wake-up signal is detected, the main control module of the on-board hydrogen storage system is activated from the dormant state and enters the functional preparation stage. It then executes a self-test process, that is, updates the system operating state to the self-test state. After updating to the self-test state, it automatically performs valve function tests, sensor reading verification, communication link detection, etc. to ensure the reliability and safety of the subsequent hydrogen supply process. After detecting a controller wake-up signal, if the self-test execution time exceeds a preset threshold, the system's self-test execution time exceeds a safe tolerance, potentially exposing potential issues such as lag, failure, or abnormal response. The system then enters a protective state, updating the system's operating state to a self-test timeout. This self-test timeout can trigger an error report, issue a warning, or interrupt subsequent hydrogen supply, prompting maintenance personnel to investigate potential hardware or communication issues. This is a critical safety mechanism for ensuring stable system startup. The preset timeout threshold is the maximum allowable self-test duration and can be set based on hardware performance and the complexity of the test process, for example, from 30 to 90 seconds, to prevent the system from becoming stuck or unresponsive. The preset timeout threshold can be a static parameter or dynamically configured through vehicle configuration or the HMI interface. After detecting a controller wake-up signal and a self-test completion signal, the system completes health checks on key components such as valves, sensors, and communications, confirming normal functionality. The system's operating state is then updated to a ready state. Once in the ready state, the system enters standby operation, maintaining power but not supplying hydrogen. This saves energy while ensuring rapid response to subsequent commands, improving vehicle startup efficiency. After detecting the self-test completion signal and the hydrogen supply request signal, it means that the fuel cell system is ready to accept hydrogen supply. The on-board hydrogen supply system needs to open the hydrogen passage and update the system working state to the hydrogen supply state. In the hydrogen supply state, the on-board hydrogen supply system will control the bottle valve and the pressure reducing valve to open in sequence to achieve continuous hydrogen supply to the fuel cell. This is the core operation stage for achieving power output.The fault level signal indicates an abnormal state identified by the system and can be categorized into multiple levels, such as routine and emergency stop. Routine faults are non-critical faults that do not affect safety. Routine faults can include faults that require only warnings and faults that require shutdown. The fault level value can be set based on the diagnostic module reading sensor abnormalities, communication interruptions, temperature deviations, and other conditions. For example, a delayed sensor response is marked as a fault that requires only warnings, i.e., a routine fault. When a fault level signal indicating a routine fault is detected, the system operating state is updated to a fault state. After entering the fault state, hydrogen supply can be prohibited or enter a restricted mode, while prompting the host computer or displaying an alarm message, thereby improving the safety, robustness, and maintenance convenience of the on-board hydrogen supply system. When a replacement request signal is detected, the system operating state is updated to a replacement state. After entering the replacement state, the on-board hydrogen supply system controls the opening and closing of the bottle valve and the replacement pipeline according to the set process, achieving multiple rounds of gas purging, improving hydrogen purity and pipeline safety. It is suitable for initial hydrogen refueling or resuming operation after maintenance.

[0043] Through the implementation of the above embodiments, different signals are mapped one-to-one with specific system states, such as sleep mode upon power-on and readiness mode upon self-test completion, etc., to establish a clear state flow logic, so that the hydrogen storage system has clear state judgment rules, which can ensure that new energy vehicles can be connected in an orderly manner in key links such as startup, self-test, and hydrogen supply, improve system stability, and provide a standardized basis for subsequent fault management and function expansion.

[0044] In some embodiments, the aforementioned status trigger signal may also include a key power loss signal; the aforementioned step 102 may also include: in the hydrogen supply state or the ready state, when the key power loss signal is detected, the system working state is updated to a fault state; in the hydrogen supply state, the ready state or the fault state, when the fault level signal indicating an emergency stop level fault is detected, the system working state is updated to a self-test state.

[0045] In some examples, the key power loss signal indicates that the vehicle control system cannot detect a continuous power signal from the key switch, which usually means that the vehicle has been turned off, the driver has left, or the power system has failed. It can be judged by reading the voltage status of the key power circuit. When the voltage is lower than the set threshold (such as 2V) for a certain period of time (such as 1 second), the key power loss signal is issued; the key power loss signal can be used to prevent the on-board hydrogen storage system from continuing to supply hydrogen after the driver leaves the vehicle, avoid hydrogen leakage or malfunction, and improve the consistency and coordination of vehicle safety control. In the hydrogen supply state or preparation state, when the key power loss signal is detected, it indicates that the vehicle state is abnormal. Updating the system working state to the fault state can effectively prevent the system from failing to shut down the gas source in time due to abnormal power failure, thereby improving the emergency response capability and operational safety of the hydrogen system. In the hydrogen supply state, preparation state or fault state, when the fault level signal indicating an emergency stop level fault is detected, the system working state is updated to the self-test state to perform a comprehensive safety diagnosis process and terminate the current operation. An emergency stop-level fault refers to a serious abnormality that directly endangers the safety of people and vehicles or the integrity of the system. The current hydrogen supply action must be terminated immediately and the protection process must be entered. It can be triggered by the controller based on the following situations: hydrogen leak alarm, bottle valve sticking, pressure reducing valve not closed, fire sensor alarm, continuous overpressure, etc.; emergency stop-level faults can include faults that only require emergency stop processing and faults that require emergency stop and the entire vehicle is not allowed to be processed under high pressure.

[0046] For example, if the vehicle is in the ready state and the driver suddenly turns off the power or the battery is powered off, the system controller will detect the disappearance of the key detection voltage and immediately identify it as a "key power loss signal", and update the state from ready to "fault state"; at this time, the on-board hydrogen storage system stops all hydrogen supply processes, records the fault information, and closes the bottle valve and the pressure reducing valve; if it is subsequently detected that the hydrogen leakage concentration exceeds the standard or the bottle valve is stuck and not closed, the system will upgrade the fault level to the emergency stop level, immediately enter the "self-test state", re-execute safety checks and trigger a high-level alarm or limit restart to ensure the safety of people and vehicles.

[0047] Through the implementation of the above embodiments, the key power loss signal and emergency stop level fault response logic are introduced to further improve the system's automatic identification and processing capabilities for sudden power outages and emergency fault situations; when a new energy vehicle encounters a power outage or major fault during operation, it can automatically switch to a fault state or re-self-check to ensure the safety of the entire vehicle and personnel, and enhance the system's fault tolerance and emergency response capabilities.

[0048] In some embodiments, the aforementioned step 103 may include: when the system working state is updated from the sleep state to the self-test state, opening the hydrogen storage bottle valve and the pressure reducing valve in sequence, and closing the pressure reducing valve and the hydrogen storage bottle valve in sequence after a first preset time; when the system working state is updated to the ready state or the self-test timeout state, keeping the hydrogen storage bottle valve and the pressure reducing valve in the closed state; when the system working state is updated to the replacement state or the hydrogen supply state, opening the hydrogen storage bottle valve and the pressure reducing valve in sequence; when the system working state is updated from the self-test state to the hydrogen supply state, opening the hydrogen storage bottle valve and the pressure reducing valve in sequence.

[0049] In some examples, when the system operating state is updated from the dormant state to the self-test state, the hydrogen storage bottle valve (to allow hydrogen to flow) and the pressure reducing valve (to allow gas to enter the downstream) are opened in sequence, and the pressure reducing valve and the hydrogen storage bottle valve are closed in sequence after the first preset time to check whether the valve action delay, current feedback or sensor response are normal. If the expected action or pressure change is not detected within the specified time, it can be determined that the valve has failed, thereby improving the safety and reliability of the on-board hydrogen storage system before startup. The first preset time refers to the time period during which the valve remains open during the self-test process, which is used to simulate the gas path state in order to detect whether the valve control, electromagnetic coil, electrical interface or pressure change are normal. The first preset time can be set to a fixed value or a configurable parameter (such as 2 seconds, 5 seconds, etc.). When the system working status is updated to the ready status or the self-test timeout status, the on-board hydrogen storage system will not supply hydrogen. It should be ensured that the gas source is completely isolated. Therefore, the hydrogen storage bottle valve and the pressure reducing valve will be kept in the closed state. This can prevent the gas line from being opened by mistake due to incomplete detection or timeout errors. It is a safety strategy to prevent hydrogen leakage and accidental hydrogen supply, especially in actual deployment. When the system working status is updated to the replacement status or hydrogen supply status, the hydrogen storage bottle valve and the pressure reducing valve are opened in sequence to prevent the sudden change in pressure difference from causing an impact on the downstream system. It also helps to monitor the system pressure changes by opening the valves in sequence, thereby assisting in judging the integrity of the pipeline. It is a standard control logic for high-pressure media such as hydrogen. When the system working status is updated from the self-test status to the hydrogen supply status, the hydrogen storage bottle valve and the pressure reducing valve are opened in sequence to ensure that the gas line is allowed to open only after the self-test is passed.

[0050] For example, after the fuel cell vehicle is powered on for the first time, the on-board hydrogen storage system enters the self-test state from the dormant state. In the self-test state, the hydrogen storage bottle valve and the pressure reducing valve are controlled to open in sequence, and the gas supply time is maintained for 3 seconds to detect the downstream pressure change; then the valve is closed, and the on-board hydrogen storage system enters the ready state on standby; when the driver starts the vehicle and the controller issues a hydrogen supply request, the on-board hydrogen storage system switches from the ready state to the hydrogen supply state, opens the bottle valve and the pressure reducing valve again, and realizes continuous hydrogen supply; if the self-test fails and enters the timeout state, the valve remains closed, the on-board hydrogen storage system no longer responds to the hydrogen supply command, and prompts that the equipment status needs to be checked.

[0051] Through the implementation of the above embodiments, a precise correspondence is established between different working states and the opening and closing operations of the hydrogen storage bottle valve and the pressure reducing valve, thus realizing dynamic closed-loop control of the valve action. In the process of the system entering the self-test state from the dormant state, the bottle valve is opened first and then the pressure reducing valve is opened, and after a certain period of time, the pressure reducing valve is closed first and then the bottle valve. This can effectively fill the pipeline between the bottle valve and the pressure reducing valve with hydrogen, and provide a stable measurement basis for subsequent monitoring of the high pressure in the bottle and the medium pressure after pressure reduction, thereby supporting the estimation of the remaining hydrogen mass and the determination of the working status of the pressure reducing valve; in the operation of new energy vehicles, the system can automatically control the valve in the order of opening first and then closing, which not only improves the safety of hydrogen supply, but also reduces the system impact caused by sudden pressure changes, and helps to extend the service life of key components such as valves and pipelines.

[0052] In some embodiments, the aforementioned step 103 may further include: when the system operating state is updated to a fault state, closing the pressure reducing valve and the hydrogen storage bottle valve in sequence after the fuel cell system is shut down.

[0053] In some examples, when the system operating status is updated to a fault state, the valve is not closed immediately. Instead, the system waits for the fuel cell system to complete the shutdown process to avoid abnormal shutdown of the energy system due to hydrogen supply interruption. After the shutdown is completed, the pressure reducing valve is closed first (cutting off the downstream gas supply) and then the bottle valve is closed (disconnecting the upstream gas source) in sequence to achieve safe pressure relief and isolation of the gas circuit, preventing instantaneous hydrogen interruption from affecting the stability of the fuel cell. Closing in steps can reduce valve shock and avoid back pressure. The fuel cell system (FCS) is the core of the vehicle's power system and can be composed of a fuel cell stack, air compressor, hydrogen humidifier, stack controller, thermal management system, etc. It is responsible for reacting hydrogen with oxygen in the air to generate electricity. The fuel cell system requires a stable hydrogen supply for operation and is highly sensitive to hydrogen supply interruptions.

[0054] For example, when the on-board controller recognizes that the on-board hydrogen storage system has entered a fault state, it does not cut off the gas immediately, but continues to monitor the shutdown completion signal from the fuel cell system. After confirming that the fuel cell is completely shut down, the controller performs the gas cutting action according to the set sequence: first issue a command to close the pressure reducing valve, delay to confirm the valve response, and then close the hydrogen storage bottle valve to ensure the safe segmentation of the hydrogen path and safe depressurization of the system.

[0055] Through the implementation of the above embodiment, when the system enters a fault state, the hydrogen channel is not closed immediately. Instead, the pressure reducing valve and the bottle valve are closed in sequence after the fuel cell system is shut down. This ensures that the flow of hydrogen does not interrupt the normal shutdown process of the fuel-electric system. This can ensure the smooth decommissioning of new energy vehicles under abnormal conditions, prevent system damage or false alarms caused by sudden hydrogen outage, and improve the robustness and reliability of operation.

[0056] In some embodiments, when the system operating state is updated to a fault state, the pressure reducing valve and the hydrogen storage bottle valve are closed in sequence after the fuel cell system is shut down, which may include: when the system operating state is updated to a fault state, detecting the fuel-electric system shutdown signal; when the fuel-electric system shutdown signal is detected, or when the fuel-electric system shutdown signal is still not detected when the second preset time expires, closing the pressure reducing valve and the hydrogen storage bottle valve in sequence.

[0057] In some examples, the fuel cell system shutdown signal refers to the status confirmation signal output by the fuel cell system (FCS) after completing the safe shutdown process, which is used to notify the hydrogen storage system that the FCS has completed operations such as shutdown, cooling, and unloading, and the hydrogen supply can be safely interrupted. It can be read and judged through the CAN bus, such as the fuel cell system controller determines that the fuel cell system shutdown signal is received after sending the shutdown status word through the CAN frame. It can also be judged by power output, such as continuously detecting the output current and voltage of the fuel cell system stack. When it is continuously lower than the threshold (such as current <1A) and stabilizes for a certain period of time, it is determined that the fuel cell system shutdown signal is received. When a fuel-electric system shutdown signal is detected, the pressure reducing valve and hydrogen storage bottle valve are closed in sequence. If the fuel-electric system shutdown signal is still not detected at the end of the second preset time, it is considered that the fuel cell system response is abnormal or the signal is lost, and the gas cut-off operation is still forced to ensure system safety, and the pressure reducing valve and hydrogen storage bottle valve are closed in sequence. For example, if the on-board hydrogen storage system waits for 10 seconds and still does not receive the fuel-electric system shutdown signal, the controller assumes that the fuel-electric system shutdown signal has stopped or cannot communicate, and starts the backup shutdown process, closing the pressure reducing valve and bottle valve in sequence. The second preset time is the maximum tolerance time for waiting for the fuel cell shutdown signal from the time the fault state is entered. Once the timeout is exceeded, the safety shutdown strategy is triggered. It can be 5 seconds, 10 seconds or 15 seconds, and can be set based on the evaluation of the vehicle shutdown response time.

[0058] For example, when the system status is identified as a fault state, it immediately starts monitoring the fuel-electric system shutdown signal from the fuel cell controller and starts a timeout countdown (for example, 10 seconds); if the fuel-electric system shutdown signal is successfully received within 10 seconds, the valve closing command is immediately issued: first close the pressure reducing valve, and then close the hydrogen storage bottle valve after a delayed confirmation response; if the fuel-electric system shutdown signal is still not received after the timeout, it is considered that there is a communication anomaly or the fuel cell system fails to respond normally, and the controller will force the gas cut-off process to ensure the safe isolation of the hydrogen storage system and prevent the risk of continued hydrogen leakage.

[0059] Through the implementation of the above embodiment, when the fuel-electric shutdown signal detection fails, the valve closing operation is forced to be executed after setting the maximum waiting time (the second preset time length), thereby enhancing the coverage capability of extreme or abnormal situations; this dual protection mechanism ensures that the system can still be shut down safely in the event of communication interruption or controller abnormality, preventing safety accidents such as hydrogen leakage, and improving the overall safety level of new energy vehicles.

[0060] In some embodiments, the aforementioned vehicle-mounted hydrogen storage system control method may further include: when the system operating state is updated to a replacement state, stopping detection of a fault level signal.

[0061] In some examples, when the system working state is updated to the replacement state, since such operations may manually or programmatically trigger pressure anomalies, flow anomalies, increased hydrogen concentration, etc., these phenomena may be regarded as faults in the normal hydrogen supply mode, but they are normal phenomena during the replacement process. Therefore, stopping the detection of fault level signals can avoid the on-board hydrogen storage system from entering unnecessary control states such as false protection and false shutdown; for example, when the on-board hydrogen storage system receives a hydrogen replacement instruction issued by maintenance personnel through the HMI, the on-board hydrogen storage system enters the replacement state. During this process, the detection value of the hydrogen concentration sensor at the exhaust port increases, but the controller recognizes that the current operation is a replacement operation, so it suspends fault signal processing to avoid triggering hydrogen leakage alarms, emergency hydrogen shut-off and other unnecessary actions.

[0062] Through the implementation of the above embodiment, when entering the replacement state, the detection of the fault level signal is stopped, so as to avoid unnecessary fault alarms during the replacement process from interfering with subsequent operation processes, thereby improving the independence and operation efficiency of the replacement operation, and facilitating the rapid completion of hydrogen replacement during daily maintenance or repair of new energy vehicles, thereby reducing downtime.

[0063] In some embodiments, the aforementioned vehicle-mounted hydrogen storage system control method may further include: obtaining the volume parameters and hydrogen flow characteristic parameters of the pipeline between the hydrogen storage bottle valve and the pressure reducing valve; calculating the theoretical time required for hydrogen to fill the pipeline based on the volume parameters and the flow characteristic parameters; configuring the first preset time to be K times the theoretical time, where K is a safety factor greater than 1.

[0064] In some examples, the volume parameter refers to the internal effective volume of the gas pipeline between the hydrogen storage bottle valve and the pressure reducing valve, which can be expressed in liters (L) or cubic centimeters (cm 3 ) is a unit used to represent the volume of gas that the enclosed space can accommodate during inflation. The volume parameters can be calculated from the design drawings of known pipe diameters and lengths. For example, if the pipe diameter is 10 mm and the length is 0.8 m, the volume is approximately 62.8 cm 3. Hydrogen flow characteristic parameters are parameters that describe the behavioral characteristics of hydrogen flow in a pipeline. They may include initial pressure, flow rate, temperature, viscous friction coefficient, gas compressibility factor, etc., and are used to predict the time required for hydrogen to fill the volume; for example, if the initial bottle valve opening flow rate is 0.5L / s and the pipeline volume is 0.06L, the theoretical filling time is 0.12s. The theoretical time refers to the calculated time required for hydrogen to be filled from the hydrogen storage bottle to the end of the pipeline under ideal conditions such as constant flow rate, no leakage, and constant temperature. It is a key time parameter in the valve control strategy; for example, if the volume is 100cm 3 , with an estimated flow rate of 1 L / s, the theoretical duration is approximately 0.1 seconds. K is the magnification factor to ensure the safety of the on-board hydrogen storage system and adapt to actual fluctuations. It can be set between 1.5 and 3 to account for uncertainties such as measurement errors, temperature changes, and gas flow instability, ensuring that the pipeline is filled with hydrogen within the time limit and that effective testing is completed.

[0065] For example, during the initialization phase of the control software, the pipeline volume and flow parameters under different vehicle models or hydrogen storage module configurations can be read through the built-in database to calculate the theoretical inflation time (such as 0.12 seconds), which is then multiplied by the safety factor K (such as K=2) to obtain a first preset time (such as 0.24 seconds), which is used to control the valve opening time during the self-test phase to ensure that the pipeline is fully inflated so that subsequent pressure collection is accurate, thereby improving the accuracy of state recognition and system reliability.

[0066] Through the implementation of the above embodiment, the theoretical time required for hydrogen filling can be accurately calculated based on the volume of the pipeline between the hydrogen storage bottle and the pressure reducing valve and the hydrogen flow characteristics, and the safety factor K is introduced to optimize the configuration of the first preset time, thereby ensuring that the pipeline is fully filled with hydrogen during the self-test process. This not only helps to accurately obtain the high-pressure pressure value at the outlet of the hydrogen storage bottle for evaluating the quality of the remaining hydrogen, but also can determine whether the pressure reducing valve is working properly by monitoring the medium-pressure after decompression; while ensuring the safety and adequacy of hydrogen filling, it improves the accuracy and reliability of the system self-test, lays a precise foundation for subsequent hydrogen supply control, and is an important supporting means for realizing intelligent control and status monitoring of the hydrogen storage system.

[0067] Furthermore, as an implementation of the aforementioned method embodiment, the present application also provides a vehicle-mounted hydrogen storage system control device for implementing the aforementioned method embodiment. This device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this vehicle-mounted hydrogen storage system control device embodiment will no longer describe the details of the aforementioned method embodiment one by one, but it should be clear that the device in the embodiment of the present application can correspond to and implement all the contents of the aforementioned method embodiment. Figure 3As shown, the vehicle-mounted hydrogen storage system control device 20 is applied to the vehicle-mounted hydrogen storage system. The vehicle-mounted hydrogen storage system includes a hydrogen storage bottle, a hydrogen storage bottle valve and a pressure reducing valve. The hydrogen storage bottle valve is arranged at the gas outlet end of the hydrogen storage bottle, and the pressure reducing valve is arranged downstream of the hydrogen storage bottle valve. The vehicle-mounted hydrogen storage system control device 20 includes: a signal detection unit 201, a state determination unit 202 and a valve control unit 203, wherein the signal detection unit 201 is used to detect the state trigger signal for the above-mentioned vehicle-mounted hydrogen storage system in real time, wherein the state trigger signal may include a power-on signal, a controller Wake-up signal, self-test completion signal, hydrogen supply request signal, replacement request signal and fault level signal; a state determination unit 202, used to determine the system working state of the on-board hydrogen storage system based on the state trigger signal, wherein the system working state is any one of the sleep state, self-test state, self-test timeout state, ready state, hydrogen supply state, fault state and replacement state; a valve control unit 203, used to execute the corresponding valve control instruction according to the system working state, wherein the valve control instruction is used to instruct the opening and closing operations of the hydrogen storage bottle valve and the pressure reducing valve.

[0068] In some embodiments, the state determination unit 202 is also used to determine the system working state as the sleep state when a power-on signal is detected; after detecting the power-on signal, when a controller wake-up signal is detected, the system working state is updated to the self-test state; after detecting the controller wake-up signal, when the self-test execution time exceeds a preset time threshold, the system working state is updated to the self-test timeout state; after detecting the controller wake-up signal, when a self-test completion signal is detected, the system working state is updated to the ready state; after detecting the self-test completion signal, when a hydrogen supply request signal is detected, the system working state is updated to the hydrogen supply state; when a fault level signal indicating a conventional level fault is detected, the system working state is updated to the fault state; when a replacement request signal is detected, the system working state is updated to the replacement state.

[0069] In some embodiments, the status trigger signal also includes a key power loss signal; the status determination unit 202 is also used to update the system working state to a fault state when a key power loss signal is detected in the hydrogen supply state or the ready state; in the hydrogen supply state, the ready state or the fault state, when a fault level signal indicating an emergency stop level fault is detected, the system working state is updated to a self-test state.

[0070] In some embodiments, the valve control unit 203 is also used to open the hydrogen storage bottle valve and the pressure reducing valve in sequence when the system working state is updated from the sleep state to the self-test state, and close the pressure reducing valve and the hydrogen storage bottle valve in sequence after a first preset time period; when the system working state is updated to the ready state or the self-test timeout state, keep the hydrogen storage bottle valve and the pressure reducing valve in the closed state; when the system working state is updated to the replacement state or the hydrogen supply state, open the hydrogen storage bottle valve and the pressure reducing valve in sequence; when the system working state is updated from the self-test state to the hydrogen supply state, open the hydrogen storage bottle valve and the pressure reducing valve in sequence.

[0071] In some embodiments, the valve control unit 203 is also used to close the pressure reducing valve and the hydrogen storage bottle valve in sequence after the fuel cell system is shut down when the system working state is updated to a fault state.

[0072] In some embodiments, the valve control unit 203 is also used to detect the shutdown signal of the fuel-fired power system when the system working state is updated to a fault state; when the shutdown signal of the fuel-fired power system is detected, or when the shutdown signal of the fuel-fired power system is not detected when the second preset time expires, the pressure reducing valve and the hydrogen storage bottle valve are closed in sequence.

[0073] In some embodiments, the signal detection unit 201 is further configured to stop detecting the fault level signal when the system operating state is updated to the replacement state.

[0074] In some embodiments, the valve control unit 203 is also used to obtain the volume parameters and hydrogen flow characteristic parameters of the pipeline between the hydrogen storage bottle valve and the pressure reducing valve; based on the volume parameters and flow characteristic parameters, calculate the theoretical time required for hydrogen to fill the pipeline; and configure the first preset time to be K times the theoretical time, where K is a safety factor greater than 1.

[0075] The present application also provides a computer-readable storage medium, which stores computer-executable instructions or computer programs. When the computer-executable instructions or computer programs are executed by a processor, the processor will be caused to execute any step of the on-board hydrogen storage system control method provided in the present application.

[0076] In some embodiments, the computer-readable storage medium may be a random access memory (RAM), a read-only memory (ROM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); or it may be various devices including one or any combination of the above memories.

[0077] In some embodiments, computer-executable instructions may be in the form of a program, software, software module, script, or code, written in any form of programming language (including compiled or interpreted languages, or declarative or procedural languages), and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment.

[0078] In some embodiments, computer-executable instructions may, but need not, correspond to a file in a file system, may be stored as part of a file that stores other programs or data, for example, in one or more scripts in a HyperText Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinating files (for example, files storing one or more modules, subroutines, or code portions).

[0079] In some embodiments, computer-executable instructions may be deployed to be executed on one electronic device, or on multiple electronic devices located at one site, or on multiple electronic devices distributed across multiple sites and interconnected by a communication network.

[0080] like Figure 4 As shown, the present application also provides an electronic device 30, including a memory 310, a processor 320 and a computer program 311 stored in the memory 310 and executable on the processor. When the processor 320 executes the computer program 311, any step of the above-mentioned vehicle-mounted hydrogen storage system control method is implemented.

[0081] The present application also provides a computer program product, which includes a computer program or computer-executable instructions stored in a computer-readable storage medium. A processor of an electronic device reads the computer program or computer-executable instructions from the computer-readable storage medium and executes the computer program or computer-executable instructions, causing the electronic device to perform any step of the vehicle-mounted hydrogen storage system control method described above.

[0082] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling a vehicle-mounted hydrogen storage system, characterized in that: Applied to a vehicle-mounted hydrogen storage system, the vehicle-mounted hydrogen storage system includes a hydrogen storage bottle, a hydrogen storage bottle valve and a pressure reducing valve, the hydrogen storage bottle valve is arranged at the gas outlet end of the hydrogen storage bottle, and the pressure reducing valve is arranged downstream of the hydrogen storage bottle valve. The vehicle-mounted hydrogen storage system control method includes: Real-time detection of status trigger signals for the on-board hydrogen storage system, wherein the status trigger signals include a power-on signal, a controller wake-up signal, a self-test completion signal, a hydrogen supply request signal, a replacement request signal, and a fault level signal; Determining a system operating state of the on-board hydrogen storage system based on the state trigger signal, wherein the system operating state is any one of a dormant state, a self-test state, a self-test timeout state, a ready state, a hydrogen supply state, a fault state, and a replacement state; According to the working status of the system, the corresponding valve control instructions are executed, wherein the valve control instructions are used to instruct the opening and closing operations of the hydrogen storage bottle valve and the pressure reducing valve.

2. The vehicle-mounted hydrogen storage system control method according to claim 1, characterized in that: The determining, based on the status trigger signal, the system operating state of the on-board hydrogen storage system includes: When the power-on signal is detected, determining the system operating state as the sleep state; After detecting the power-on signal, when detecting the controller wake-up signal, updating the system working state to the self-test state; After detecting the controller wake-up signal, when the self-test execution time exceeds a preset time threshold, updating the system working state to the self-test timeout state; After detecting the controller wake-up signal, when detecting the self-test completion signal, updating the system working state to the ready state; After detecting the self-test completion signal, when detecting the hydrogen supply request signal, updating the system operating state to the hydrogen supply state; When it is detected that the fault level signal indicates a normal level fault, updating the system operating state to the fault state; When the replacement request signal is detected, the system operating state is updated to the replacement state.

3. The vehicle-mounted hydrogen storage system control method according to claim 2, characterized in that: The state trigger signal further includes a key power loss signal; and determining the system operating state of the on-board hydrogen storage system based on the state trigger signal further includes: In the hydrogen supply state or the ready state, when the key power loss signal is detected, updating the system working state to the fault state; In the hydrogen supply state, the preparation state or the fault state, when it is detected that the fault level signal indicates an emergency stop level fault, the system operating state is updated to the self-test state.

4. The vehicle-mounted hydrogen storage system control method according to claim 3, characterized in that: The executing corresponding valve control instructions according to the system working state includes: When the system working state is updated from the dormant state to the self-test state, the hydrogen storage bottle valve and the pressure reducing valve are opened in sequence, and the pressure reducing valve and the hydrogen storage bottle valve are closed in sequence after a first preset time period; When the system working state is updated to the ready state or the self-test timeout state, the hydrogen storage bottle valve and the pressure reducing valve are kept in a closed state; When the system working state is updated to the replacement state or the hydrogen supply state, the hydrogen storage bottle valve and the pressure reducing valve are opened in sequence; When the system operating state is updated from the self-check state to the hydrogen supply state, the hydrogen storage bottle valve and the pressure reducing valve are opened in sequence.

5. The vehicle-mounted hydrogen storage system control method according to claim 4, characterized in that: The executing of the corresponding valve control instruction according to the system working state further includes: When the system operating state is updated to the fault state, the pressure reducing valve and the hydrogen storage bottle valve are closed in sequence after the fuel cell system is shut down.

6. The vehicle-mounted hydrogen storage system control method according to claim 5, characterized in that: When the system operating state is updated to the fault state, closing the pressure reducing valve and the hydrogen storage bottle valve in sequence after the fuel cell system is shut down, includes: When the system operating state is updated to the fault state, detecting a shutdown signal of the fuel-electric system; When the shutdown signal of the fuel-electricity system is detected, or when the shutdown signal of the fuel-electricity system is not detected when the second preset time expires, the pressure reducing valve and the hydrogen storage bottle valve are closed in sequence.

7. The vehicle-mounted hydrogen storage system control method according to claim 6, characterized in that: The vehicle-mounted hydrogen storage system control method further includes: When the system operating state is updated to the replacement state, detection of the fault level signal is stopped.

8. A vehicle-mounted hydrogen storage system control device, applied to a vehicle-mounted hydrogen storage system, the vehicle-mounted hydrogen storage system comprising a hydrogen storage bottle, a hydrogen storage bottle valve, and a pressure reducing valve, the hydrogen storage bottle valve being disposed at the gas outlet end of the hydrogen storage bottle, the pressure reducing valve being disposed downstream of the hydrogen storage bottle valve, the vehicle-mounted hydrogen storage system control device comprising: A signal detection unit, configured to detect in real time a status trigger signal for the on-board hydrogen storage system, wherein the status trigger signal includes a power-on signal, a controller wake-up signal, a self-test completion signal, a hydrogen supply request signal, a replacement request signal, and a fault level signal; a state determination unit, configured to determine a system operating state of the on-board hydrogen storage system based on the state trigger signal, wherein the system operating state is any one of a dormant state, a self-test state, a self-test timeout state, a ready state, a hydrogen supply state, a fault state, and a replacement state; A valve control unit is used to execute corresponding valve control instructions according to the working status of the system, wherein the valve control instructions are used to instruct the opening and closing operations of the hydrogen storage bottle valve and the pressure reducing valve.

9. An electronic device comprising: A memory and a processor, characterized in that the processor is used to implement the steps of the vehicle-mounted hydrogen storage system control method according to any one of claims 1 to 7 when executing the computer program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the vehicle-mounted hydrogen storage system control method according to any one of claims 1 to 7 are implemented.

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