Hydrogenation control method and device for vehicle

Abstract

According to the hydrogenation control method and device of the vehicle, if a whole vehicle safety state signal indicates that the state of the vehicle meets the hydrogenation condition and a system state signal indicates that the state of a vehicle-mounted hydrogen storage system meets the hydrogenation condition, it is indicated that safe hydrogenation can be conducted at present, and therefore hydrogen is injected into the vehicle-mounted hydrogen storage system. In the hydrogen filling process, the state of the vehicle and the state of the vehicle-mounted hydrogen storage system continue to be detected, and if the detected state does not meet the hydrogen filling condition, it is indicated that other abnormal conditions occur in the hydrogen filling process, so that safety risks possibly exist in continuous filling in the state at the moment, and hydrogen filling is stopped. It can be seen that the state is detected before filling is started, hydrogen filling is started only when both the state and the state meet the hydrogenation condition, the state is continuously detected in the filling process, and hydrogen filling is stopped once the hydrogenation condition is not met. On the basis, the hydrogenation safety in the whole hydrogenation process is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method and device for controlling hydrogen refueling of a vehicle. Background Art

[0002] With the development of vehicle technology and new energy technology, hydrogen, as a clean energy, has been applied to hydrogen energy vehicles, such as hydrogen fuel cell vehicles, hydrogen internal combustion engine vehicles, etc.

[0003] Hydrogen-powered vehicles are equipped with an onboard hydrogen storage system, which refers to devices related to hydrogen filling, storage, transportation, supply and control, such as hydrogen filling through the hydrogen filling port and hydrogen delivery to the fuel cell port. How to control hydrogen filling is of great significance to the safety of hydrogen filling and hydrogen storage. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a vehicle hydrogenation control method and device, which detects the status before starting to refuel, and starts hydrogen refueling only when the hydrogenation conditions are met, and continues to detect the status during the refueling process. Once the hydrogenation conditions are not met, the hydrogen refueling is stopped. Based on this, it is beneficial to improve the hydrogenation safety during the entire hydrogenation process.

[0005] The embodiments of the present application disclose the following technical solutions:

[0006] On the one hand, an embodiment of the present application provides a method for controlling hydrogen refueling of a vehicle, the method comprising:

[0007] In response to a hydrogen refueling request for a vehicle, obtaining a vehicle safety status signal corresponding to the vehicle, and obtaining a system status signal corresponding to an onboard hydrogen storage system of the vehicle;

[0008] If the vehicle safety status signal indicates that the vehicle status satisfies the hydrogen refueling condition, and the system status signal indicates that the vehicle-mounted hydrogen storage system status satisfies the hydrogen refueling condition, hydrogen is refueled into the vehicle-mounted hydrogen storage system;

[0009] During the hydrogen filling process, detecting the state of the vehicle and the state of the on-board hydrogen storage system;

[0010] If the detected state does not satisfy the hydrogenation condition, hydrogen refueling is stopped, and the detected state does not satisfy the hydrogenation condition includes at least one of the detected state of the vehicle does not satisfy the hydrogenation condition and the detected state of the on-board hydrogen storage system does not satisfy the hydrogenation condition.

[0011] On the other hand, an embodiment of the present application provides a hydrogen refueling control device for a vehicle, the device comprising an acquisition unit, a refueling unit, a detection unit and a stop unit:

[0012] The acquisition unit is used to obtain a vehicle safety status signal corresponding to the vehicle and a system status signal corresponding to an on-board hydrogen storage system of the vehicle in response to a hydrogen refueling request for the vehicle;

[0013] The refueling unit is used to refuel the on-board hydrogen storage system with hydrogen if the vehicle safety status signal indicates that the vehicle status satisfies the hydrogen refueling condition, and the system status signal indicates that the on-board hydrogen storage system status satisfies the hydrogen refueling condition;

[0014] The detection unit is used to detect the state of the vehicle and the state of the on-board hydrogen storage system during the process of hydrogen filling;

[0015] The stop unit is used to stop hydrogen filling if the detected state does not meet the hydrogen filling condition, and the detected state does not meet the hydrogen filling condition includes at least one of the detected state of the vehicle does not meet the hydrogen filling condition and the detected state of the on-board hydrogen storage system does not meet the hydrogen filling condition.

[0016] It can be seen from the above technical solution that in response to the hydrogen refueling request for the vehicle, the vehicle safety status signal corresponding to the vehicle and the system status signal corresponding to the on-board hydrogen storage system are first obtained. The vehicle safety status signal focuses on the vehicle as a whole, and can be used to indicate the state of the vehicle. The system status signal focuses on the on-board hydrogen storage system, and can be used to indicate the state of the on-board hydrogen storage system. If the vehicle safety status signal indicates that the state of the vehicle meets the hydrogen refueling conditions, and the system status signal indicates that the state of the on-board hydrogen storage system meets the hydrogen refueling conditions, it indicates that hydrogen can be safely refueled at present, so hydrogen can be refueled to the on-board hydrogen storage system. Based on this, before starting to refuel, the status of the vehicle and the on-board hydrogen storage system are first detected. Only when both states meet the hydrogen refueling conditions, hydrogen refueling is started to ensure the safety of hydrogen refueling. Then, during the process of hydrogen refueling, the state of the vehicle is detected and the state of the on-board hydrogen storage system is detected. If the detected state does not meet the hydrogen refueling conditions, it indicates that other abnormal conditions have occurred during the hydrogen refueling process, so that the state at this time may continue to refuel. There may be safety risks, so hydrogen refueling is stopped. Among them, the detected state does not meet the hydrogenation conditions, including at least one of the detected state of the vehicle does not meet the hydrogenation conditions and the detected state of the on-board hydrogen storage system does not meet the hydrogenation conditions. Based on this, during the filling process, the detection of the aforementioned vehicle and on-board hydrogen storage system states continues. Once a state does not meet the hydrogenation conditions, the hydrogen filling is stopped to ensure the safety of hydrogenation. It can be seen that the present application detects the state before starting the filling, and starts the hydrogen filling only when the hydrogenation conditions are met, and continues to detect the state during the filling process. Once the hydrogenation conditions are not met, the hydrogen filling is stopped. Based on this, it is beneficial to improve the safety of hydrogenation throughout the hydrogenation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A flow chart of a vehicle hydrogen refueling control method provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of an application scenario of communication filling;

[0020] Figure 3 A structural diagram of a hydrogen refueling control device for a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] The vehicle hydrogen refueling control method provided in the embodiment of the present application can be implemented by a computer device, which can be a terminal device or a server, wherein the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. Terminal devices include but are not limited to mobile phones, computers, intelligent voice interaction devices, smart home appliances, vehicle-mounted terminals, etc. The terminal device and the server can be directly or indirectly connected via wired or wireless communication, and this application does not impose any restrictions on this.

[0023] The specific examples are as follows:

[0024] Figure 1 This is a flow chart of a vehicle hydrogen refueling control method provided in an embodiment of the present application, which is described by taking a server as the aforementioned computer device as an example. The method includes S101-S104:

[0025] S101: In response to a hydrogen refueling request for a vehicle, a vehicle safety status signal corresponding to the vehicle is obtained, and a system status signal corresponding to an onboard hydrogen storage system of the vehicle is obtained.

[0026] S102: If the vehicle safety status signal indicates that the vehicle status meets the hydrogen refueling conditions, and the system status signal indicates that the status of the on-board hydrogen storage system meets the hydrogen refueling conditions, hydrogen is refilled into the on-board hydrogen storage system.

[0027] Among them, the vehicle may refer to a hydrogen-powered vehicle with an on-board hydrogen storage system, and the on-board hydrogen storage system refers to a device related to hydrogen filling, storage, transportation, supply and control, wherein the stored hydrogen can provide energy for the vehicle to meet the driving needs of the vehicle, etc.

[0028] In response to a request for hydrogen refueling for the vehicle, it indicates that hydrogen refueling is required to store hydrogen in the on-board hydrogen storage system, which may specifically refer to hydrogen cylinders stored in the on-board hydrogen storage system. In order to ensure the safety of hydrogen refueling, firstly, the vehicle safety status signal corresponding to the vehicle and the system status signal corresponding to the on-board hydrogen storage system may be obtained. Among them, the vehicle safety status signal focuses on the vehicle as a whole, and can specifically be used to indicate the status of the vehicle, and the system status signal focuses on the on-board hydrogen storage system, and can be used to indicate the status of the on-board hydrogen storage system.

[0029] Furthermore, the hydrogen refueling condition can be used to indicate the status of the vehicle and the onboard hydrogen storage system when hydrogen refueling can be safely performed. If the vehicle safety status signal indicates that the vehicle status meets the hydrogen refueling condition, and the system status signal indicates that the onboard hydrogen storage system status meets the hydrogen refueling condition, it indicates that hydrogen refueling is currently safe, so hydrogen refueling can be performed to the onboard hydrogen storage system.

[0030] Based on this, before starting to refuel, the status of both the vehicle and the on-board hydrogen storage system are first checked. Only when the status of both meet the hydrogen refueling conditions will hydrogen refueling begin to ensure the safety of hydrogen refueling.

[0031] It should be noted that the present application does not impose any limitation on the setting of the vehicle safety status signal, the system status signal, and the hydrogenation condition. For ease of understanding, the present application provides the following example description:

[0032] In a possible implementation, the vehicle safety status signal includes at least one of the vehicle speed signal, the vehicle accelerator pedal signal, the vehicle drive motor status signal, the vehicle power-off status signal, the vehicle handbrake signal, the vehicle gear position signal, and the vehicle battery power signal. Based on this, the vehicle situation can be comprehensively considered to evaluate whether the vehicle meets the conditions for safe hydrogen refueling at this time to ensure the safety of hydrogen refueling.

[0033] In practical applications, in some scenarios, the vehicle needs to be powered off before hydrogen can be refueled. The above-mentioned battery power signal can be used to indicate the remaining power of the vehicle's battery, and can supply power during the hydrogenation process when the vehicle is powered off. In order to ensure that the hydrogenation process is not disconnected and the battery is not depleted during the hydrogenation process, in a possible implementation, if the vehicle safety status signal includes the battery power signal of the vehicle, the hydrogenation condition is used to indicate that before the start of hydrogen refueling, the battery power signal is greater than or equal to the first power threshold, and during the hydrogenation process, the battery power signal is greater than or equal to the second power threshold, wherein the first power threshold is greater than the second power threshold. Based on this, before the start of hydrogenation, the remaining power of the battery exceeds the first power threshold (such as 50%), indicating that there is enough power for hydrogenation to ensure that the hydrogenation process is not disconnected. At the same time, during the hydrogenation process, the remaining power of the battery needs to exceed the second power threshold (such as 10%) to avoid the remaining power of the battery being too low due to hydrogenation power consumption, resulting in power loss, etc., thereby ensuring that the battery is not depleted during the hydrogenation process and avoiding the impact of power loss on the battery life.

[0034] In addition, the vehicle safety status signal may also include the vehicle's operating mode, the vehicle's charging gun connection status, etc. For ease of understanding, the present application embodiment illustrates the vehicle safety status signal through the following Table 1:

[0035] Table 1. Example table for vehicle safety status signals

[0036]

[0037] Regarding the system status signal, in one possible implementation, the system status signal may include at least one of a system pressure signal of the on-board hydrogen storage system, a system temperature signal of the on-board hydrogen storage system, a sensor fault signal of the on-board hydrogen storage system, and a system leakage signal of the on-board hydrogen storage system.

[0038] In practical applications, if the system pressure signal indicates that there is no overpressure (such as the system pressure is not higher than the first pressure threshold) or underpressure (such as the system pressure is not lower than the second pressure threshold), then the system pressure is considered to meet the hydrogenation conditions. And if the system temperature signal indicates that there is no overtemperature (such as the system temperature is not higher than the temperature threshold), then it can be considered that the system temperature meets the hydrogenation conditions. And, if the sensor fault signal indicates that all sensors are faulty, then the hydrogenation conditions are met. For example, hydrogen concentration sensor, system pressure sensor, system temperature sensor, etc. Among them, the system pressure sensor can be used to detect the system pressure to determine whether the system pressure is overpressure or underpressure, and the system temperature sensor can be used to detect the system temperature to determine whether the system temperature meets the hydrogenation conditions.

[0039] S103: During the hydrogen filling process, the status of the vehicle and the status of the on-board hydrogen storage system are detected.

[0040] S104: If the detected state does not meet the hydrogenation conditions, stop hydrogen filling.

[0041] And, during the process of hydrogen refueling, the vehicle status and the on-board hydrogen storage system status are continuously detected. If the detected status does not meet the hydrogen refueling conditions, it indicates that other abnormal conditions have occurred during the hydrogen refueling process, so that the current status no longer meets the conditions for safe hydrogen refueling. If the refueling continues, there may be safety risks, so the hydrogen refueling is stopped. Among them, the detected status does not meet the hydrogen refueling conditions, including at least one of the detected vehicle status does not meet the hydrogen refueling conditions and the detected on-board hydrogen storage system status does not meet the hydrogen refueling conditions.

[0042] It is understandable that during the hydrogen refueling process, the vehicle status can be detected by repeatedly acquiring the vehicle safety status signal, and the system status signal can be repeatedly acquired to detect the status of the on-board hydrogen storage system.

[0043] Based on this, during the refueling process, the aforementioned status detection of the vehicle and the on-board hydrogen storage system will continue. Once any status does not meet the hydrogen refueling conditions, hydrogen refueling will be stopped to ensure the safety of hydrogen refueling.

[0044] It can be seen that the present application detects the state before starting the hydrogenation, and starts hydrogenation only when the hydrogenation conditions are met, and continues to detect the state during the hydrogenation process, and stops hydrogenation once the hydrogenation conditions are not met. Based on this, it is beneficial to improve the hydrogenation safety during the entire hydrogenation process.

[0045] In another possible implementation, during the process of hydrogen filling, the change trend of the hydrogen parameters corresponding to the on-board hydrogen storage system can also be detected, wherein the hydrogen parameters can be used to indicate the characteristics of the hydrogen stored in the on-board hydrogen storage system, thereby reflecting the changes in the hydrogen stored in the on-board hydrogen storage system during the hydrogen filling process. If the change trend of the hydrogen parameters indicates that the hydrogen parameters remain unchanged for a period of time exceeding the preset period, it indicates that during the hydrogen filling process, the situation of the hydrogen stored in the on-board hydrogen storage system has not changed, and it may be that the hydrogen is not stored in the on-board hydrogen storage system, so the hydrogen filling is stopped at this time. Based on this, the situation of the hydrogen stored in the system during the hydrogen filling process is detected to ensure that hydrogen is effectively filled into the system.

[0046] It is understandable that as hydrogen is continuously added to the on-board hydrogen storage system, the amount of hydrogen stored in the system should be increasing, the mass will be increasing, and the system pressure will also continue to rise. Therefore, in one possible implementation, the aforementioned hydrogen parameters can be used to indicate the quality characteristics of the hydrogen stored in the on-board hydrogen storage system, or the hydrogen parameters can be used to indicate the pressure characteristics of the hydrogen stored in the on-board hydrogen storage system. Based on this, by detecting the changing trend of the quality of hydrogen or the changing trend of the pressure of hydrogen during the hydrogenation process, the purpose of detecting the condition of the hydrogen stored in the system during the hydrogenation process is achieved.

[0047] It can be seen from the above technical solution that in response to the hydrogen refueling request for the vehicle, the vehicle safety status signal corresponding to the vehicle and the system status signal corresponding to the on-board hydrogen storage system are first obtained. The vehicle safety status signal focuses on the vehicle as a whole, and can be used to indicate the state of the vehicle. The system status signal focuses on the on-board hydrogen storage system, and can be used to indicate the state of the on-board hydrogen storage system. If the vehicle safety status signal indicates that the state of the vehicle meets the hydrogen refueling conditions, and the system status signal indicates that the state of the on-board hydrogen storage system meets the hydrogen refueling conditions, it indicates that hydrogen can be safely refueled at present, so hydrogen can be refueled to the on-board hydrogen storage system. Based on this, before starting to refuel, the status of the vehicle and the on-board hydrogen storage system are first detected. Only when both states meet the hydrogen refueling conditions, hydrogen refueling is started to ensure the safety of hydrogen refueling. Then, during the process of hydrogen refueling, the state of the vehicle is detected and the state of the on-board hydrogen storage system is detected. If the detected state does not meet the hydrogen refueling conditions, it indicates that other abnormal conditions have occurred during the hydrogen refueling process, so that the state at this time may continue to refuel. There may be safety risks, so hydrogen refueling is stopped. Among them, the detected state does not meet the hydrogenation conditions, including at least one of the detected state of the vehicle does not meet the hydrogenation conditions and the detected state of the on-board hydrogen storage system does not meet the hydrogenation conditions. Based on this, during the filling process, the detection of the aforementioned vehicle and on-board hydrogen storage system states continues. Once a state does not meet the hydrogenation conditions, the hydrogen filling is stopped to ensure the safety of hydrogenation. It can be seen that the present application detects the state before starting the filling, and starts the hydrogen filling only when the hydrogenation conditions are met, and continues to detect the state during the filling process. Once the hydrogenation conditions are not met, the hydrogen filling is stopped. Based on this, it is beneficial to improve the safety of hydrogenation throughout the hydrogenation process.

[0048] Through the above embodiments, the hydrogen refueling control method for a vehicle provided by the present application is illustrated. For a better understanding, the embodiments of the present application also provide the following examples:

[0049] In practical applications, the common hydrogen refueling process is divided into non-communication refueling and communication refueling. Among them, communication refueling means that during the hydrogen refueling process, an effective data connection is established from the vehicle to the hydrogen station hydrogen refueling machine. The data of the vehicle-side hydrogen system (such as real-time temperature and pressure, number and volume of gas cylinders, working pressure, etc.) can be transmitted to the hydrogen station. The hydrogen station adjusts the refueling strategy (such as refueling rate, temperature, etc.) according to the data on the vehicle side to ensure the safety of the refueling process. Non-communication refueling is different from communication refueling. The corresponding hydrogen refueling process is similar to direct charging. There is no communication interaction between the vehicle side and the station side, and the control of the station side is adjusted by the hydrogen station itself.

[0050] In the communication filling, the vehicle end and the station end are respectively equipped with a communication module (such as an infrared communication module) to realize the data transmission between the two. Figure 2A schematic diagram of an application scenario of communication filling is shown in Figure 2 In the embodiment, the aforementioned vehicle is a fuel cell bus. When hydrogen refueling is needed, the vehicle-side communication module establishes a connection with the station-side communication module. The vehicle-side communication module transmits the relevant data of the vehicle (such as real-time temperature and pressure, number and volume of gas cylinders, working pressure, etc.) to the station-side communication module through infrared signals. The station-side communication module receives data based on infrared signals, and the hydrogen filling machine controls subsequent hydrogenation based on the received data. Specifically, hydrogen can be filled into the vehicle's on-board hydrogen storage system through the hydrogen filling gun and the vehicle's hydrogen filling port. In actual applications, if the vehicle is equipped with an infrared communication module and the hydrogen filling machine is equipped with an infrared communication module, when the hydrogen filling gun of the hydrogen filling machine is connected to the hydrogen filling port of the vehicle, the two can establish a communication connection to achieve infrared communication.

[0051] In some scenarios, if the hydrogen refueling process is communication refueling, the aforementioned S103 may include in specific implementation: during the hydrogen refueling process, the vehicle status is detected by the vehicle control unit of the vehicle, and the status of the on-board hydrogen storage system is detected by the vehicle's hydrogen safety management system. And the aforementioned S104 may include in specific implementation: if the detected status does not meet the hydrogen refueling conditions, a stop refueling instruction is sent to the hydrogen refueling machine through the vehicle-side communication module of the vehicle, and the hydrogen refueling machine is used to refuel hydrogen into the on-board hydrogen storage system. Accordingly, in response to the stop refueling instruction, the hydrogen refueling machine is controlled to stop hydrogen refueling.

[0052] It can be seen that in communication refueling, the vehicle itself implements status detection, specifically the vehicle control unit detects the vehicle status, and the hydrogen safety management system detects the status of the onboard hydrogen storage system. When the detected status does not meet the hydrogen refueling conditions, based on the communication connection between the vehicle and the station, a stop refueling instruction can be sent to the hydrogen refueling machine through the vehicle communication module, and the refueling is stopped based on this instruction. Based on this, it is suitable for the scenario of communication refueling. The vehicle detects its own status, interacts with the station when there is a problem, and stops refueling in time to ensure safety.

[0053] Among them, the vehicle-side communication module can be an infrared communication module (InfraRed Receiver Module, IRM). In practical applications, the Hydrogen Management System (HMS) can establish a connection with the IRM, and the HMS can transmit data with the Vehicle Control Unit (VCU) based on the vehicle's CAN connection. In specific implementation, when it is detected that the state does not meet the hydrogenation conditions, the HMS can send a stop refueling instruction to the IRM, and then the IRM can transmit the stop refueling instruction to the station end.

[0054] In some other scenarios, if the hydrogen filling process is non-communication filling, the aforementioned S104 may include:

[0055] If the detected state does not meet the hydrogen refueling conditions, a warning prompt message is issued through the vehicle, and the warning prompt message is used to indicate hydrogen refueling abnormality. In response to the user's termination of the hydrogen refueling operation based on the warning prompt message, hydrogen refueling is stopped.

[0056] It can be seen that in non-communication refueling, manual refueling is usually performed, and the vehicle and the station have no direct interaction capabilities. In this regard, the present application provides a method of issuing an early warning by the vehicle itself to remind the user to stop refueling to ensure safety. Among them, the user can be, for example, a staff member of a hydrogen refueling station.

[0057] For a better understanding, the process of hydrogen filling belongs to the scenario of non-communication filling, and the present application also provides the following embodiments for illustration:

[0058] The process of hydrogen refueling belongs to non-communication refueling. The aforementioned S101 may include, in specific implementation: in response to a hydrogen refueling request, obtaining a vehicle safety status signal corresponding to the vehicle through the vehicle control unit of the vehicle, and obtaining a system status signal corresponding to the on-board hydrogen storage system through the vehicle's hydrogen safety management system. Based on this, in non-communication refueling, the vehicle itself still implements status detection. Adaptively, the present application also provides a hydrogen refueling mechanism, that is, the aforementioned S102 may include, in specific implementation: if the vehicle safety status signal indicates that the state of the vehicle meets the hydrogen refueling conditions, and the system status signal indicates that the state of the on-board hydrogen storage system meets the hydrogen refueling conditions, indicating that hydrogen can be refueled, at this time, a refueling start prompt message may be sent by the vehicle to prompt the user (such as a hydrogen station staff) that hydrogen refueling can be started. Accordingly, in response to the user's start of hydrogen refueling operation based on the start refueling prompt message, hydrogen is refueled to the on-board hydrogen storage system.

[0059] Furthermore, the aforementioned S103 may include, in its specific implementation: during the process of hydrogen refueling, detecting the status of the vehicle through the vehicle control unit of the vehicle, and detecting the status of the on-board hydrogen storage system through the vehicle's hydrogen safety management system, that is, the vehicle still detects the status during the refueling process, and once it is detected that the hydrogen refueling conditions are not met, a warning prompt message is directly issued through the vehicle.

[0060] In specific implementation, the aforementioned issuing of warning prompt information and issuing of refueling start prompt information may be implemented by voice broadcast of the vehicle, lighting of the vehicle, etc. This application does not make any limitation on this, and it can be flexibly configured according to actual conditions.

[0061] It should also be noted that the embodiments of the present application do not impose any restrictions on how to determine whether the process of hydrogen filling belongs to communication filling or non-communication filling. In practical applications, first of all, it can be judged based on whether the vehicle and the hydrogen filling station are equipped with a communication module. If at least one end is not equipped with a communication module, it can be considered as non-communication filling. If both are equipped with a communication module and a connection can be established for data transmission, it can be considered as communication filling. In addition, usually, if the hydrogen system pressure level parameter corresponding to the on-board hydrogen storage system is 35MPa, non-communication filling is adopted. If it is 70MPa, communication filling is adopted. Therefore, it can also be judged according to the hydrogen system pressure level parameter corresponding to the on-board hydrogen storage system. In addition, in order to avoid battery depletion due to hydrogen refueling, non-communication filling can be used when the battery power of the vehicle is not high (such as lower than the aforementioned 10%).

[0062] It can be seen that in the present application, the safety of hydrogen refueling is improved by detecting the status before and during refueling, and it is compatible with communication refueling and non-communication refueling. It has higher applicability and can improve the utilization rate of hydrogen refueling resources (such as various hydrogen refueling stations) and avoid waste of hydrogen refueling resources.

[0063] Through the above embodiments, the vehicle hydrogenation control method provided by the present application is described in detail. For better understanding, the present application embodiment is further illustrated as follows based on the above embodiments:

[0064] (1) In response to a hydrogen refueling request, it is first determined whether it is a communication refueling or a non-communication refueling.

[0065] (2) Activate the refueling. There are three ways to activate the refueling. One way is to open the hydrogenation hatch (the hatch can be equipped with a contact activation switch). Another way is to send a hydrogenation command (such as a rocker switch). Another way is hard-wire activation (mostly used in the early stage of functional verification).

[0066] (3) HMS and IRM wake up and enable, and perform self-test. Specifically, HMS wakes up, starts and performs self-test (no system failure), and IRM is enabled, the module starts and detects its own status (no failure), such as the power supply voltage and power supply current.

[0067] For communication refilling, after step (3), step (4) can be implemented, specifically:

[0068] (4) After the HMS and IRM self-check and find no faults, the HMS sends a standby signal to the IRM (recorded as message 1), including: infrared communication protocol ( It may refer to the special symbol in the infrared communication protocol), the customized version number (such as VN=01.10), the total volume of the hydrogen system (such as TV=0140.0, unit: L), the filling port type (such as RT=H70), the start filling instruction 0x00 (such as FC=Reserved), the maximum pressure of the gas cylinder (such as MP=043.7, unit: MPa), the temperature of the gas cylinder (such as MT=293.00, unit: K), etc. Among them, the total volume of the hydrogen system may refer to the hydrogen storage capacity of the vehicle-mounted hydrogen storage system, which can indicate the amount of hydrogen when it is full, and can usually be determined based on the single bottle volume of the hydrogen cylinder and the number of hydrogen cylinders.

[0069] (5) After receiving the HMS message, IRM sends a feedback message to HMS (referred to as message 2), including: version number customization, infrared communication protocol Fault signal (such as short circuit, open circuit, etc.) IRM feeds back message 2 to HMS to confirm whether the communication between HMS and IRM is established.

[0070] (6) After the HMS and IRM complete the mutual feedback, the two establish a connection.

[0071] (7) Before starting to refuel, that is, before sending the command to start refueling, the VCU determines the status of the vehicle, specifically including detecting the vehicle safety status signal as shown in Table 1 above, which will not be repeated here. Also, the HMS detects the status of the on-board hydrogen storage system, which may specifically include detecting hydrogen leakage (such as no hydrogen leakage alarm), and no system failure of the hydrogen system (such as no overvoltage, undervoltage, overtemperature, sensor failure, etc.). For details, please refer to the description of the above embodiment, which will not be repeated here. Also, the HMS can also detect whether a fault feedback from the IRM is received. If it is determined that there is no IRM feedback fault, it is determined that the hydrogenation conditions are met. In addition, the ambient temperature can also be detected, such as -40℃≤ambient temperature Tamb≤50℃, to ensure that the ambient temperature of the hydrogenation process is suitable.

[0072] (8) When the detection determines that the hydrogenation conditions are met, the HMS sends a start filling instruction to the IRM, and the IRM forwards the start filling instruction to the hydrogenation station. After the hydrogenation machine receives the start filling instruction sent by the IRM, it can control the hydrogenation machine to start hydrogen filling. Among them, the start filling instruction can be FC=Dyna (dynamic filling).

[0073] (9) During the hydrogen refueling process, the HMS begins to detect the changing trends of the hydrogen parameters corresponding to the on-board hydrogen storage system in real time (such as periodically). If the quality characteristics of hydrogen do not change for more than a preset time (such as 10s), it is determined whether there are the following problems: leakage, bottle valve not opened, etc. In addition, the battery power can be detected to ensure that the battery is not depleted during the hydrogen refueling process. The hydrogen filling rate corresponding to the on-board hydrogen storage system can also be detected to prevent overcharging. In addition, the VCU begins to detect the status of the vehicle in real time (such as periodically). Among them, the hydrogen filling rate (Hydrogen State of Charge, H2SOC) can refer to the ratio of the current storage capacity of hydrogen in the on-board hydrogen storage system to its total storage capacity, that is, it can intuitively reflect the hydrogen storage capacity in the on-board hydrogen storage system.

[0074] (10) Stop hydrogen refueling. When the hydrogen filling rate is ≥100%, or a fault occurs (such as the aforementioned state does not meet the hydrogen refueling conditions, the hydrogen parameters remain unchanged for longer than the preset time, etc.), the HMS sends a stop refueling instruction to the IRM, and the IRM feeds back to the hydrogen refueling station. After the hydrogen refueling machine receives the stop refueling instruction sent by the IRM, it controls to stop hydrogen refueling. Among them, the stop refueling instruction can be FC=Abort. And, when the IRM cannot receive the HMS message, it can also stop sending. In actual applications, after the hydrogen refueling is completed, the hydrogen refueling gun is pulled out of the hydrogen refueling port, and the infrared communication between the vehicle end and the station end is disconnected.

[0075] For non-communication refilling, after step (3), step (11) may be implemented, specifically:

[0076] (10) Before starting to refuel, the VCU determines the status of the vehicle, specifically including detecting the vehicle safety status signal as shown in Table 1 above, which will not be repeated here. Also, the HMS detects the status of the on-board hydrogen storage system, which may specifically include detecting hydrogen leakage (such as no hydrogen leakage alarm), and no system failure of the hydrogen system (such as no overvoltage, undervoltage, overtemperature, sensor failure, etc.). For details, please refer to the description of the above embodiment, which will not be repeated here. Also, the HMS can also detect whether a fault feedback from the IRM is received. If it is determined that there is no IRM feedback fault, it is determined that the hydrogenation conditions are met. In addition, the ambient temperature can also be detected to ensure that the ambient temperature of the hydrogenation process is suitable. It can be understood that this step is consistent with step (7) in communication refueling.

[0077] (11) When the tests determine that the conditions for hydrogen refueling are met, the vehicle can send a prompt message to start refueling (such as a voice announcement that hydrogen refueling can begin) to remind the staff of the hydrogen refueling station to start refueling.

[0078] (12) During the hydrogen refueling process, the HMS begins to detect the changing trends of the hydrogen parameters corresponding to the on-board hydrogen storage system in real time (such as periodically). If the quality characteristics of the hydrogen do not change for more than a preset time (such as 10s), it is determined whether there are the following problems: leakage, bottle valve not opened, etc. In addition, the battery power can be detected to ensure that the battery is not depleted during the hydrogen refueling process. The hydrogen filling rate corresponding to the on-board hydrogen storage system can also be detected to prevent overcharging. In addition, the VCU begins to detect the status of the vehicle in real time (such as periodically). It can be understood that this step is consistent with step (9) in communication refueling.

[0079] (13) Stop hydrogen refueling. When the hydrogen filling rate is ≥100%, or a fault occurs (such as the aforementioned status does not meet the hydrogen refueling conditions, the hydrogen parameters remain unchanged for a period of time exceeding the preset time, etc.), the vehicle will send out an early warning message (such as a voice announcement that a fault has occurred and please stop hydrogen refueling, etc.) to remind the hydrogen station staff to stop hydrogen refueling in time to ensure safety.

[0080] In actual applications, HMS can transmit relevant data to IRM (such as the relevant data carried in the aforementioned message 1). In addition, HMS can transmit relevant data to VCU based on CAN connection (such as the number of hydrogenation times, hydrogenation quality, hydrogenation speed and hydrogen system boost rate, etc.). VCU can display it in real time through the vehicle's dashboard, etc., so that the owner can understand the hydrogenation situation in a timely manner.

[0081] Through the above embodiments, the hydrogen refueling control method for the vehicle provided by the present application is described in detail. In order to further improve the safety of hydrogen refueling, in another possible implementation, during the hydrogen refueling process, the vehicle-end hydrogen system pressure boost rate determined by the vehicle is obtained, and the station-end hydrogen system pressure boost rate determined by the hydrogen refueling machine is obtained. In addition, the on-board hydrogen storage system can be tested according to the vehicle-end hydrogen system pressure boost rate and the station-end hydrogen system pressure boost rate to obtain the test results.

[0082] Among them, the hydrogen system pressure boost rate can be used to indicate the rate of increase of the system pressure of the on-board hydrogen storage system during the hydrogen filling process, and can reflect the instantaneous hydrogen filling rate. The vehicle-side hydrogen system pressure boost rate is determined by the vehicle, and is used to indicate the rate of increase of the system pressure during the hydrogen filling process evaluated by the vehicle itself. The station-side hydrogen system pressure boost rate is determined by the hydrogen filling machine, and is used to indicate the rate of increase of the system pressure during the hydrogen filling process evaluated by the hydrogen filling station.

[0083] It is understandable that, ideally, for the same hydrogen refueling process, the rate of increase of system pressure evaluated at both the vehicle end and the hydrogen refueling station end should be similar or even the same. When there is a leak in the on-board hydrogen storage system, there will be a significant difference between the two. Therefore, the on-board hydrogen storage system can be tested based on the vehicle-end hydrogen system pressure increase rate and the station-end hydrogen system pressure increase rate to obtain a test result, which can be used to indicate whether there is a leak in the on-board hydrogen storage system during hydrogen refueling.

[0084] It can be seen that during the hydrogen refueling process, based on the hydrogen system boost rate determined on both the vehicle side and the hydrogen refueling station side, the on-board hydrogen storage system is tested for leaks. Based on this, leakage problems in the on-board hydrogen storage system can be discovered in a timely manner to ensure the reliability of the on-board hydrogen storage system and better ensure safety during subsequent use.

[0085] Among them, the hydrogen system pressure ramp rate (PRR) is used to reflect the instantaneous hydrogenation rate, and the unit can be MPa / min. For the vehicle-side PRR, it can be determined by the following formula:

[0086] PRR=dP / dt

[0087] In the above formula, P can be used to represent the system pressure of the on-board hydrogen storage system, and t can be used to represent time. PRR can indicate the rate of increase of the pressure of the on-board hydrogen storage system at a certain moment during the hydrogen refueling process, reflecting the instantaneous hydrogen refueling rate.

[0088] In practical applications, for station-side PRR, hydrogen refueling stations are usually equipped with flow meters, pressure gauges, etc. Therefore, the relevant parameters in the hydrogen refueling process can be detected according to the configuration of the hydrogen refueling station to calculate the corresponding PRR.

[0089] It is understandable that if the test results indicate a leak, hydrogen filling is stopped and a leak prompt message is generated. The leak prompt message is used to prompt that there is a leak in the on-board hydrogen storage system during the hydrogen filling process so that relevant users can perform maintenance in a timely manner.

[0090] For ease of understanding, for the communication refueling scenario, the embodiment of the present application uses the following Table 2 to illustrate the output signal of the infrared communication module IRM:

[0091] Table 2. Example table of output signals for infrared communication module IRM

[0092]

[0093]

[0094] It can be understood that the above-mentioned embodiments basically correspond to the method embodiments, so the relevant parts can refer to the partial description of the method embodiments.

[0095] Figure 3 This is a structural diagram of a vehicle hydrogen refueling control device provided in an embodiment of the present application, wherein the device includes an acquisition unit 301, a refueling unit 302, a detection unit 303, and a stop unit 304:

[0096] The acquisition unit 301 is used to obtain a vehicle safety status signal corresponding to the vehicle and a system status signal corresponding to the on-board hydrogen storage system of the vehicle in response to a hydrogen refueling request for the vehicle;

[0097] The refueling unit 302 is used to refuel the on-board hydrogen storage system with hydrogen if the vehicle safety status signal indicates that the vehicle status satisfies the hydrogen refueling condition, and the system status signal indicates that the on-board hydrogen storage system status satisfies the hydrogen refueling condition;

[0098] The detection unit 303 is used to detect the state of the vehicle and the state of the on-board hydrogen storage system during the hydrogen filling process;

[0099] The stop unit 304 is used to stop hydrogen filling if the detected state does not meet the hydrogen filling condition, and the detected state does not meet the hydrogen filling condition includes at least one of the detected state of the vehicle does not meet the hydrogen filling condition and the detected state of the on-board hydrogen storage system does not meet the hydrogen filling condition.

[0100] In a possible implementation, if the hydrogen filling process is non-communication filling, the stopping unit is further used to:

[0101] If the detected state does not meet the hydrogenation condition, a warning prompt message is issued through the vehicle, and the warning prompt message is used to indicate hydrogenation abnormality;

[0102] In response to the user ending the hydrogenation operation based on the early warning prompt information, hydrogen filling is stopped.

[0103] In a possible implementation manner, the acquiring unit is further configured to:

[0104] In response to the hydrogen refueling request, obtaining the vehicle safety status signal corresponding to the vehicle through the vehicle control unit of the vehicle, and obtaining the system status signal corresponding to the on-board hydrogen storage system through the hydrogen safety management system of the vehicle;

[0105] The filling unit is also used for:

[0106] If the vehicle safety status signal indicates that the vehicle status satisfies the hydrogen refueling condition, and the system status signal indicates that the vehicle-mounted hydrogen storage system status satisfies the hydrogen refueling condition, a refueling start prompt message is sent through the vehicle;

[0107] In response to the user starting a hydrogen filling operation based on the start filling prompt information, filling the vehicle-mounted hydrogen storage system with hydrogen;

[0108] The detection unit is also used to detect the state of the vehicle through the vehicle control unit of the vehicle during the process of hydrogen filling, and to detect the state of the on-board hydrogen storage system through the hydrogen safety management system of the vehicle.

[0109] In a possible implementation, if the hydrogen filling process is communication filling, the detection unit is further used to:

[0110] During the hydrogen filling process, the vehicle control unit of the vehicle detects the state of the vehicle, and the hydrogen safety management system of the vehicle detects the state of the on-board hydrogen storage system;

[0111] The stopping unit is also used for:

[0112] If the detected state does not meet the hydrogenation condition, a stop filling instruction is sent to the hydrogenation machine through the vehicle-side communication module of the vehicle, and the hydrogenation machine is used to fill hydrogen into the vehicle-mounted hydrogen storage system;

[0113] In response to the stop filling instruction, the hydrogen filling machine is controlled to stop hydrogen filling.

[0114] In a possible implementation, the detection unit is further used for:

[0115] During the hydrogen filling process, detecting a change trend of a hydrogen parameter corresponding to the on-board hydrogen storage system, wherein the hydrogen parameter is used to indicate a characteristic of the hydrogen stored in the on-board hydrogen storage system;

[0116] If the variation trend of the hydrogen parameter indicates that the hydrogen parameter remains unchanged for a period exceeding a preset period, hydrogen filling is stopped.

[0117] In a possible implementation, the hydrogen parameter is used to indicate a quality characteristic of the hydrogen stored in the on-board hydrogen storage system, or the hydrogen parameter is used to indicate a pressure characteristic of the hydrogen stored in the on-board hydrogen storage system.

[0118] In one possible implementation, the vehicle safety status signal includes at least one of the vehicle speed signal, the vehicle accelerator pedal signal, the vehicle drive motor status signal, the vehicle power-off status signal, the vehicle handbrake signal, the vehicle gear signal, and the vehicle battery power signal.

[0119] In one possible implementation, if the vehicle safety status signal includes a battery power signal of the vehicle, the hydrogen refueling condition is used to indicate that before starting hydrogen refueling, the battery power signal is greater than or equal to a first power threshold, and during the hydrogen refueling process, the battery power signal is greater than or equal to a second power threshold, wherein the first power threshold is greater than the second power threshold.

[0120] In a possible implementation, the system status signal includes at least one of a system pressure signal of the on-board hydrogen storage system, a system temperature signal of the on-board hydrogen storage system, a sensor fault signal of the on-board hydrogen storage system, and a system leakage signal of the on-board hydrogen storage system.

[0121] It can be seen from the above technical solution that in response to the hydrogen refueling request for the vehicle, the vehicle safety status signal corresponding to the vehicle and the system status signal corresponding to the on-board hydrogen storage system are first obtained. The vehicle safety status signal focuses on the vehicle as a whole, and can be used to indicate the state of the vehicle. The system status signal focuses on the on-board hydrogen storage system, and can be used to indicate the state of the on-board hydrogen storage system. If the vehicle safety status signal indicates that the state of the vehicle meets the hydrogen refueling conditions, and the system status signal indicates that the state of the on-board hydrogen storage system meets the hydrogen refueling conditions, it indicates that hydrogen can be safely refueled at present, so hydrogen can be refueled to the on-board hydrogen storage system. Based on this, before starting to refuel, the status of the vehicle and the on-board hydrogen storage system are first detected. Only when both states meet the hydrogen refueling conditions, hydrogen refueling is started to ensure the safety of hydrogen refueling. Then, during the process of hydrogen refueling, the state of the vehicle is detected and the state of the on-board hydrogen storage system is detected. If the detected state does not meet the hydrogen refueling conditions, it indicates that other abnormal conditions have occurred during the hydrogen refueling process, so that the state at this time may continue to refuel. There may be safety risks, so hydrogen refueling is stopped. Among them, the detected state does not meet the hydrogenation conditions, including at least one of the detected state of the vehicle does not meet the hydrogenation conditions and the detected state of the on-board hydrogen storage system does not meet the hydrogenation conditions. Based on this, during the filling process, the detection of the aforementioned vehicle and on-board hydrogen storage system states continues. Once a state does not meet the hydrogenation conditions, the hydrogen filling is stopped to ensure the safety of hydrogenation. It can be seen that the present application detects the state before starting the filling, and starts the hydrogen filling only when the hydrogenation conditions are met, and continues to detect the state during the filling process. Once the hydrogenation conditions are not met, the hydrogen filling is stopped. Based on this, it is beneficial to improve the safety of hydrogenation throughout the hydrogenation process.

[0122] In another aspect, an embodiment of the present application provides a computer device, the computer device comprising a processor and a memory:

[0123] The memory is used to store program code and transmit the program code to the processor;

[0124] The processor is used to execute the vehicle hydrogen refueling control method provided by the above embodiment according to the instructions in the program code.

[0125] The computer device may include a terminal device or a server, and the aforementioned vehicle hydrogen refueling control device may be configured in the computer device.

[0126] On the other hand, an embodiment of the present application further provides a storage medium, wherein the storage medium is used to store a computer program, and the computer program is used to execute the vehicle hydrogen refueling control method provided in the above embodiment.

[0127] In addition, an embodiment of the present application also provides a computer program product including instructions, which, when executed on a computer, enables the computer to execute the vehicle hydrogen refueling control method provided in the above embodiment.

[0128] A person of ordinary skill in the art can understand that: all or part of the steps of implementing the above-mentioned method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above-mentioned method embodiment; and the aforementioned storage medium can be at least one of the following media: read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc., various media that can store program codes.

[0129] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can refer to the partial description of the method embodiment. The device embodiment described above is only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

[0130] It should be noted that, in this article, relational terms such as "first" and "second", etc. (if any) are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0131] The above is a detailed introduction to a vehicle hydrogenation control method and device provided in the embodiment of the present application. The principle and implementation method of the present application are described in detail using specific examples. The description of the above embodiment is only used to help understand the method of the present application. At the same time, for those skilled in the art, according to the method of the present application, there will be changes in the specific implementation method and application scope.

[0132] In summary, the content of this specification should not be understood as limiting the present application, and any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in this application should be included in the protection scope of this application. Moreover, based on the implementations provided in the above aspects, this application can also be further combined to provide more implementations.

Claims

1. A method for controlling hydrogen refueling of a vehicle, characterized in that: The method comprises: In response to a hydrogen refueling request for a vehicle, obtaining a vehicle safety status signal corresponding to the vehicle, and obtaining a system status signal corresponding to an onboard hydrogen storage system of the vehicle; If the vehicle safety status signal indicates that the vehicle status satisfies the hydrogen refueling condition, and the system status signal indicates that the vehicle-mounted hydrogen storage system status satisfies the hydrogen refueling condition, hydrogen is refueled into the vehicle-mounted hydrogen storage system; During the hydrogen filling process, detecting the state of the vehicle and the state of the on-board hydrogen storage system; If the detected state does not satisfy the hydrogenation condition, hydrogen refueling is stopped, and the detected state does not satisfy the hydrogenation condition includes at least one of the detected state of the vehicle does not satisfy the hydrogenation condition and the detected state of the on-board hydrogen storage system does not satisfy the hydrogenation condition.

2. The method according to claim 1, characterized in that: If the hydrogen filling process is non-communication filling, if the detected state does not meet the hydrogen filling condition, stopping the hydrogen filling includes: If the detected state does not meet the hydrogenation condition, a warning prompt message is issued through the vehicle, and the warning prompt message is used to indicate hydrogenation abnormality; In response to the user ending the hydrogenation operation based on the early warning prompt information, hydrogen filling is stopped.

3. The method according to claim 2, characterized in that The step of obtaining, in response to a hydrogen refueling request for a vehicle, a vehicle safety status signal corresponding to the vehicle, and a system status signal corresponding to an onboard hydrogen storage system of the vehicle includes: In response to the hydrogen refueling request, obtaining the vehicle safety status signal corresponding to the vehicle through the vehicle control unit of the vehicle, and obtaining the system status signal corresponding to the on-board hydrogen storage system through the hydrogen safety management system of the vehicle; If the vehicle safety status signal indicates that the vehicle status satisfies the hydrogen refueling condition, and the system status signal indicates that the vehicle-mounted hydrogen storage system status satisfies the hydrogen refueling condition, hydrogen is refueled into the vehicle-mounted hydrogen storage system, comprising: If the vehicle safety status signal indicates that the vehicle status satisfies the hydrogen refueling condition, and the system status signal indicates that the vehicle-mounted hydrogen storage system status satisfies the hydrogen refueling condition, a refueling start prompt message is sent through the vehicle; In response to the user starting a hydrogen filling operation based on the start filling prompt information, filling the vehicle-mounted hydrogen storage system with hydrogen; During the process of hydrogen filling, the state of the vehicle and the state of the on-board hydrogen storage system are detected, including: During the process of hydrogen filling, the state of the vehicle is detected by the vehicle control unit of the vehicle, and the state of the on-board hydrogen storage system is detected by the hydrogen safety management system of the vehicle.

4. The method according to claim 1, characterized in that: If the hydrogen filling process is communication filling, during the hydrogen filling process, the state of the vehicle and the state of the on-board hydrogen storage system are detected, including: During the hydrogen filling process, the vehicle control unit of the vehicle detects the state of the vehicle, and the hydrogen safety management system of the vehicle detects the state of the on-board hydrogen storage system; If the detected state does not meet the hydrogenation condition, stopping hydrogen filling includes: If the detected state does not meet the hydrogenation condition, a stop filling instruction is sent to the hydrogenation machine through the vehicle-side communication module of the vehicle, and the hydrogenation machine is used to fill hydrogen into the vehicle-mounted hydrogen storage system; In response to the stop filling instruction, the hydrogen filling machine is controlled to stop hydrogen filling.

5. The method according to claim 1, characterized in that The method further comprises: During the hydrogen filling process, detecting a change trend of a hydrogen parameter corresponding to the on-board hydrogen storage system, wherein the hydrogen parameter is used to indicate a characteristic of the hydrogen stored in the on-board hydrogen storage system; If the variation trend of the hydrogen parameter indicates that the hydrogen parameter remains unchanged for a period exceeding a preset period, hydrogen filling is stopped.

6. The method according to claim 5, characterized in that The hydrogen parameter is used to indicate the quality characteristics of the hydrogen stored in the on-board hydrogen storage system, or the hydrogen parameter is used to indicate the pressure characteristics of the hydrogen stored in the on-board hydrogen storage system.

7. The method according to any one of claims 1 to 6, characterized in that: The vehicle safety status signal includes at least one of the vehicle speed signal of the vehicle, the accelerator pedal signal of the vehicle, the drive motor status signal of the vehicle, the vehicle power-off status signal of the vehicle, the handbrake signal of the vehicle, the gear signal of the vehicle, and the battery power signal of the vehicle.

8. The method according to claim 7, characterized in that If the vehicle safety status signal includes a battery power signal of the vehicle, the hydrogen refueling condition is used to indicate that before starting hydrogen refueling, the battery power signal is greater than or equal to a first power threshold, and during hydrogen refueling, the battery power signal is greater than or equal to a second power threshold, wherein the first power threshold is greater than the second power threshold.

9. The method according to any one of claims 1 to 6, characterized in that: The system status signal includes at least one of a system pressure signal of the on-board hydrogen storage system, a system temperature signal of the on-board hydrogen storage system, a sensor fault signal of the on-board hydrogen storage system, and a system leakage signal of the on-board hydrogen storage system.

10. A vehicle hydrogen refueling control device, characterized in that: The device comprises an acquisition unit, a filling unit, a detection unit and a stop unit: The acquisition unit is used to obtain a vehicle safety status signal corresponding to the vehicle and a system status signal corresponding to an on-board hydrogen storage system of the vehicle in response to a hydrogen refueling request for the vehicle; The refueling unit is used to refuel the on-board hydrogen storage system with hydrogen if the vehicle safety status signal indicates that the vehicle status satisfies the hydrogen refueling condition, and the system status signal indicates that the on-board hydrogen storage system status satisfies the hydrogen refueling condition; The detection unit is used to detect the state of the vehicle and the state of the on-board hydrogen storage system during the process of hydrogen filling; The stop unit is used to stop hydrogen filling if the detected state does not meet the hydrogen filling condition, and the detected state does not meet the hydrogen filling condition includes at least one of the detected state of the vehicle does not meet the hydrogen filling condition and the detected state of the on-board hydrogen storage system does not meet the hydrogen filling condition.

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