Hydrogen system control method and hydrogen management system controller

Abstract

The embodiment of the invention provides a hydrogen system control method and a hydrogen management system controller, and relates to the technical field of fuel cells. The hydrogen system control method comprises the following steps: acquiring hydrogen concentration data, temperature data in a hydrogen storage bottle and pressure data in the hydrogen storage bottle; when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet preset abnormal conditions, the safety valve is cut off; the hydrogen management system controller stores safety thresholds of data monitored by the sensor under the following three scenes: a hydrogenation process, a driving process and parking. The hydrogen system control method can cover a comprehensive scene of the fuel cell vehicle, monitoring is accurate, risks are found in time, and efficiency and reliability are both considered.

Description

Technical Field

[0001] The present application relates to the field of fuel cell technology, and in particular to a hydrogen system control method and a hydrogen management system controller. Background Art

[0002] With the in-depth implementation of environmental protection and sustainable development strategies around the world, fuel cell vehicles, with their clean and efficient energy conversion characteristics, are increasingly becoming a key direction for the transformation and upgrading of the automobile industry.

[0003] However, as the main energy carrier of fuel cell vehicles, hydrogen has flammable and explosive properties, which poses a serious challenge to the safety of hydrogen systems. Hydrogen leakage may not only trigger major safety accidents, but also pose a potential threat to the ecological environment.

[0004] Therefore, how to build an efficient and reliable control system to prevent hydrogen leakage and ensure the safe operation of fuel cell vehicles in various usage scenarios is the technical problem to be solved in this application. Summary of the invention

[0005] The purpose of the present application is to provide a hydrogen system control method and a hydrogen management system controller to solve the technical problem of how to build an efficient and reliable control system to prevent hydrogen leakage in the prior art.

[0006] To achieve the above objectives, one or more embodiments of the present application adopt the following technical solutions.

[0007] In a first aspect, an embodiment of the present application provides a hydrogen system control method, which is applied to a hydrogen management system controller in a hydrogen system;

[0008] The hydrogen system includes a fuel cell, a hydrogen storage bottle, a safety valve and a sensor, wherein the sensor includes a hydrogen concentration sensor, a temperature sensor and a pressure sensor; the number of the hydrogen concentration sensors is greater than or equal to 2;

[0009] The hydrogen concentration sensor is arranged above the fuel cell and above the hydrogen storage bottle, and the hydrogen concentration sensor is used to provide hydrogen concentration data;

[0010] The temperature sensor and the pressure sensor are arranged in the hydrogen storage bottle; the temperature sensor is used to provide temperature data in the hydrogen storage bottle; the pressure sensor is used to provide pressure data in the hydrogen storage bottle;

[0011] The hydrogen system control method comprises:

[0012] Acquiring the hydrogen concentration data, the temperature data in the hydrogen storage bottle, and the pressure data in the hydrogen storage bottle;

[0013] When it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet a preset abnormal condition, the safety valve is cut off;

[0014] The hydrogen management system controller stores safety thresholds of data monitored by the sensor in the following three scenarios: hydrogen refueling, driving, and parking;

[0015] The preset abnormal conditions include:

[0016] In any scenario, the data monitored by any one of the sensors exceeds the safety threshold corresponding to the sensor in the scenario.

[0017] Optionally, the preset abnormal condition includes at least one of the following:

[0018] In the case where the hydrogen management system controller communicates with the hydrogenation equipment of the hydrogenation station, during the hydrogenation process, an abnormal signal from the hydrogenation equipment is received or a communication interruption with the hydrogenation equipment is detected;

[0019] In the case where the hydrogen management system controller communicates with the vehicle controller, during the hydrogen refueling process, an abnormal signal from the vehicle controller is received or a communication interruption with the vehicle controller is detected, and the abnormal signal from the vehicle controller includes a hydrogen refueling prohibition instruction;

[0020] During the hydrogenation process, the pressure monitored by any pressure sensor exceeds a preset first threshold;

[0021] During the hydrogenation process, the pressure monitored by any pressure sensor is lower than a preset second threshold; the second threshold is lower than the first threshold;

[0022] During the hydrogenation process, the pressure change rate monitored by any pressure sensor exceeds a preset third threshold value;

[0023] During the hydrogenation process, the temperature monitored by any temperature sensor exceeds a preset fourth threshold value;

[0024] During the hydrogenation process, the temperature monitored by any temperature sensor is lower than a preset fifth threshold; the fifth threshold is lower than the fourth threshold;

[0025] During the hydrogenation process, the temperature change rate monitored by any temperature sensor exceeds a preset sixth threshold value;

[0026] During the hydrogen refueling process, the concentration monitored by any hydrogen concentration sensor exceeds a preset seventh threshold value.

[0027] Optionally, in the case where the hydrogen management system controller communicates with the hydrogen refueling equipment in a wireless manner, the hydrogen system control method further comprises: when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet a preset abnormal condition, stopping sending a wireless signal to the hydrogen refueling equipment; when the hydrogen refueling equipment cannot detect the wireless signal of the hydrogen management system controller, stopping hydrogen refueling;

[0028] In the case where the hydrogen management system controller communicates directly or indirectly with the server, the hydrogen system control method further includes: when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, sending the abnormal situation information to the server directly or via the first transfer device; the server processes the received abnormal situation information and sends it to the user end;

[0029] In the case where the hydrogen management system controller communicates directly or indirectly with the fuel cell system controller, the hydrogen system control method also includes: when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the abnormal situation information is sent directly to the fuel cell system controller or via a second transfer device; the fuel cell system controller reduces power or shuts down according to the abnormal situation information.

[0030] Optionally, the preset abnormal condition includes at least one of the following:

[0031] During driving, the pressure monitored by any pressure sensor exceeds a preset eighth threshold;

[0032] During driving, the pressure monitored by any pressure sensor is lower than a preset ninth threshold; the ninth threshold is lower than the eighth threshold;

[0033] During driving, the pressure change rate monitored by any pressure sensor exceeds the preset tenth threshold;

[0034] During driving, the temperature monitored by any temperature sensor exceeds the preset eleventh threshold;

[0035] During driving, the temperature monitored by any temperature sensor is lower than a preset twelfth threshold; the twelfth threshold is lower than the eleventh threshold;

[0036] During driving, the temperature change rate monitored by any temperature sensor exceeds a preset thirteenth threshold;

[0037] During driving, the concentration monitored by any hydrogen concentration sensor exceeds the preset fourteenth threshold;

[0038] During driving, a communication failure of the safety valve is detected.

[0039] Optionally, during driving, the eighth threshold value decreases in a preset manner; when the power of the fuel cell changes, the tenth threshold value changes.

[0040] Optionally, the preset abnormal condition includes at least one of the following:

[0041] During parking, the pressure monitored by any pressure sensor exceeds a preset fifteenth threshold;

[0042] During parking, the pressure monitored by any pressure sensor is lower than a preset sixteenth threshold; the sixteenth threshold is lower than the fifteenth threshold;

[0043] During parking, the rate of change of pressure monitored by any pressure sensor exceeds a preset seventeenth threshold;

[0044] During parking, the temperature monitored by any temperature sensor exceeds a preset eighteenth threshold;

[0045] During parking, the temperature monitored by any temperature sensor is lower than a preset nineteenth threshold; the nineteenth threshold is lower than the eighteenth threshold;

[0046] During parking, the temperature change rate monitored by any temperature sensor exceeds the preset 20th threshold;

[0047] During parking, the concentration monitored by any hydrogen concentration sensor exceeds the preset 21st threshold;

[0048] During parking, a safety valve communication failure is detected.

[0049] Optionally, the hydrogen system control method further includes:

[0050] During driving, when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the safety valve is cut off and the sound and light alarm of the combination instrument is triggered;

[0051] During parking, when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the abnormal situation information is sent directly to the server or through a transfer device; the server processes the received abnormal situation information and sends it to the user end.

[0052] Optionally, the hydrogen system is located in a fuel cell vehicle, and the fuel cell vehicle includes a vehicle controller and a fuel cell system controller;

[0053] The vehicle controller, the fuel cell system controller and the hydrogen management system controller communicate via a bus;

[0054] The hydrogen system control method further includes: when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle, or the pressure data in the hydrogen storage bottle meets a preset abnormal condition, sending abnormal condition information to the vehicle controller;

[0055] The vehicle controller sends an emergency message to the fuel cell system controller according to the abnormal situation information; the fuel cell system controller shuts down or reduces the power to a preset minimum power according to the emergency message.

[0056] Optionally, the number of the hydrogen concentration sensors is greater than or equal to 4;

[0057] The hydrogen storage bottles are arranged at at least two locations of the fuel cell vehicle, and the hydrogen concentration sensor is arranged above each hydrogen storage bottle; the hydrogen concentration sensor is also arranged in the passenger compartment of the fuel cell vehicle.

[0058] In a second aspect, an embodiment of the present application provides a hydrogen management system controller, in which a computer program or instruction is stored. When the computer program or instruction is executed by the hydrogen management system controller, the hydrogen system control method described in the first aspect is implemented.

[0059] Compared with the prior art, this application has the following beneficial effects:

[0060] In the hydrogen system control method provided in the embodiment of the present application, hydrogen concentration monitoring is performed above the fuel cell and the hydrogen storage bottle. Leakage problems can be detected at any leak in the fuel cell and the hydrogen storage bottle, and the method can cover the comprehensive scenarios of fuel cell vehicles, including the hydrogen refueling process, the driving process and the parking process. Different monitoring schemes and response plans can be designed according to different scenarios, taking into account both efficiency and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0062] Figure 1 A schematic diagram of communication between a vehicle controller, a fuel cell system controller and a hydrogen management system controller provided in an embodiment of the present application;

[0063] Figure 2 A schematic diagram of a temperature sensor and a pressure sensor integrated in a bottle valve provided in an embodiment of the present application;

[0064] Figure 3 A schematic diagram of a hydrogen management system controller connected to an infrared controller provided in an embodiment of the present application;

[0065] Figure 4 A schematic diagram of a hydrogen management system controller connected to a T-BOX provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, 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. The described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described in the drawings here can be arranged and designed in various different configurations.

[0067] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0068] In the description of this application, it should be noted that:

[0069] Relational terms such as first and second, etc., are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations;

[0070] “Connection” should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0071] The embodiment of the present application provides a hydrogen system control method, which is applied to a hydrogen management system controller (HMS) in a hydrogen system. The hydrogen system includes a fuel cell, a hydrogen storage bottle, a safety valve and a sensor.

[0072] The hydrogen system can be applied to a fuel cell vehicle, which may include a vehicle controller and a fuel cell system controller.

[0073] like Figure 1The vehicle control unit (VCU), the fuel cell system controller (FCU) and the hydrogen management system controller can communicate through a bus, such as a CAN bus.

[0074] The sensors of the above hydrogen system include a hydrogen concentration sensor, a temperature sensor and a pressure sensor.

[0075] Regarding the position of the sensors, they can be arranged in the following manner: the number of hydrogen concentration sensors is greater than or equal to 2, at least one hydrogen concentration sensor is arranged above the fuel cell, and at least one hydrogen concentration sensor is arranged above the hydrogen storage bottle. The temperature sensor and the pressure sensor are arranged in the hydrogen storage bottle. The above-mentioned safety valve can be a bottle valve with an integrated temperature sensor and a pressure sensor, such as Figure 2 , the temperature sensor and pressure sensor are integrated in the bottle valve, Figure 2 The solid line in the middle can be a hard line for transmitting switch signals, and the dotted line can be a CAN bus.

[0076] In fuel cell vehicles, hydrogen storage bottles can be set up in at least two locations, such as the front and rear ends or the left and right ends, to avoid concentrating all hydrogen storage bottles and thus reduce risks.

[0077] When the hydrogen storage bottles are divided into at least two locations, a hydrogen concentration sensor may be provided above each hydrogen storage bottle, so as to comprehensively monitor whether the hydrogen storage bottles at each location are leaking.

[0078] The hydrogen concentration sensor can also be installed in the passenger compartment to better ensure the safety of personnel. For example, if a small amount of hydrogen gas passes through the passenger compartment and leaks inside the passenger compartment, the hydrogen concentration sensor can detect the leak in time.

[0079] The functions of each sensor include providing corresponding data: the hydrogen concentration sensor is used to provide hydrogen concentration data; the temperature sensor is used to provide temperature data inside the hydrogen storage bottle; and the pressure sensor is used to provide pressure data inside the hydrogen storage bottle.

[0080] Hydrogen system control methods include:

[0081] Obtain hydrogen concentration data, temperature data inside the hydrogen storage bottle, and pressure data inside the hydrogen storage bottle;

[0082] When it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the safety valve is cut off.

[0083] The above-mentioned preset abnormal conditions may include: in any scenario, the data monitored by any sensor exceeds the safety threshold corresponding to the sensor in the scenario.

[0084] The hydrogen management system controller can store the safety thresholds of the data monitored by sensors in the following three scenarios: hydrogen refueling, driving and parking. In different scenarios, the safety thresholds of independent sensors can be set. The safety thresholds of some sensors in different scenarios can be the same. For example, the safety threshold of the hydrogen concentration sensor can be the same value in any scenario. When the concentration reaches the safety threshold of the hydrogen concentration sensor in any scenario, it is considered that there is a hydrogen leak, triggering the safety valve to shut off.

[0085] The following is an introduction to the hydrogen refueling process, driving process and parking scenarios respectively.

[0086] In the hydrogenation scenario, the hydrogen management system controller can be set to communicate continuously with the hydrogenation equipment of the hydrogenation station during the hydrogenation process. If the communication is disconnected, it is considered that the hydrogenation needs to be stopped. Therefore, the above-mentioned preset abnormal conditions can include the hydrogen management system controller detecting that the communication with the hydrogenation equipment is interrupted. In terms of the hydrogenation equipment of the hydrogenation station, the hydrogenation equipment can be set to interrupt the hydrogenation process when it detects that the communication is disconnected.

[0087] Before hydrogen refueling begins, the steps for initialization and self-test of the hydrogen management system controller can be set. The pressure sensor and hydrogen concentration sensor start to collect data, and can establish a connection with the hydrogen refueling equipment through CAN communication module or infrared and other wireless communication methods. The hydrogen management system controller checks the working status of all sensors and communication modules to ensure that the hydrogen system is in normal working condition. The vehicle controller can connect the hydrogen refueling switch and the hydrogen refueling cover. When the vehicle controller receives the hydrogen refueling signal from the hydrogen refueling switch, the hydrogen refueling cover is opened. After hydrogen refueling is completed, the closing status of the hydrogen refueling cover can also be monitored.

[0088] The hydrogen concentration sensor can be set to multiple safety thresholds during the hydrogenation process, for example, a first concentration threshold and a second concentration threshold, the first concentration threshold is less than the second concentration threshold, and when the concentration reaches the first concentration threshold, the safety valve is cut off. When the concentration reaches the second concentration threshold, the emergency hydrogen discharge device is activated. The emergency hydrogen discharge device can be set in the hydrogen system or in the hydrogenation equipment.

[0089] During the hydrogenation process, the temperature sensor, pressure sensor and hydrogen concentration sensor continuously collect data and transmit the data to the hydrogen management system controller, which monitors the temperature, pressure and hydrogen concentration changes during the hydrogenation process in real time. The preset abnormal conditions in the hydrogen system control method may include at least one of the following:

[0090] In the case where the hydrogen management system controller communicates with the vehicle controller, during the hydrogen refueling process, an abnormal signal from the vehicle controller is received or a communication interruption with the vehicle controller is detected. The abnormal signal from the vehicle controller may include a hydrogen refueling prohibition instruction;

[0091] During the hydrogenation process, the pressure monitored by any pressure sensor exceeds a preset first threshold value; the first threshold value represents the maximum pressure value;

[0092] During the hydrogenation process, the pressure monitored by any pressure sensor is lower than a preset second threshold value; the second threshold value is lower than the first threshold value; the second threshold value represents the minimum pressure value; if the pressure monitored by any pressure sensor is lower than the minimum value, the sensor may be damaged, etc.;

[0093] During the hydrogenation process, the pressure change rate monitored by any pressure sensor exceeds a preset third threshold value;

[0094] During the hydrogenation process, the temperature monitored by any temperature sensor exceeds a preset fourth threshold value; the fourth threshold value represents the maximum temperature;

[0095] During the hydrogenation process, the temperature monitored by any temperature sensor is lower than the preset fifth threshold value; the fifth threshold value is lower than the fourth threshold value; the fifth threshold value represents the minimum temperature value; if the temperature monitored by any temperature sensor is lower than the minimum value, the sensor may be damaged, etc.;

[0096] During the hydrogenation process, the temperature change rate monitored by any temperature sensor exceeds a preset sixth threshold value;

[0097] During the hydrogen refueling process, the concentration monitored by any hydrogen concentration sensor exceeds a preset seventh threshold value.

[0098] During the hydrogenation process, the first threshold value can be set to increase in a preset manner to adapt to the situation where the pressure in the hydrogen storage bottle increases during the hydrogenation process. The preset manner is, for example, that the first threshold value increases linearly with time, then stays for a preset time, and then increases linearly with time, and so on. Corresponding to the hydrogenation method of the hydrogenation equipment, the hydrogenation equipment can first add hydrogen in a manner of increasing pressure linearly, then stay for a preset time, and then add hydrogen in a manner of increasing pressure linearly, and so on.

[0099] Similarly, during the hydrogenation process, the temperature can be set to increase in a preset manner to accommodate the increase in temperature inside the hydrogen storage bottle during the hydrogenation process.

[0100] During the hydrogen refueling process, when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle, or the pressure data in the hydrogen storage bottle meet the above-mentioned preset abnormal conditions, the hydrogen management system controller can execute the action of stopping sending wireless signals to the hydrogen refueling equipment. When the hydrogen refueling equipment cannot detect the wireless signal of the hydrogen management system controller, hydrogen refueling is stopped. Wireless signals save the steps of wiring communication. Wireless signals can be infrared signals, which have cost advantages. Wireless signals can also be Bluetooth signals. Figure 3The hydrogen management system controller can be connected to the infrared controller, and the infrared controller can be connected to the infrared transmitter to transmit signals to the hydrogenation equipment through the infrared transmitter.

[0101] When it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the hydrogen management system controller can also send the abnormal situation information directly to the server or send it via the first transfer device. The server can be the background of the Telematics Service Provider (TSP); the server processes the received abnormal situation information and sends it to the user end; the first transfer device can be a T-BOX, and the user end can be the user's mobile phone, which can display the abnormality or hydrogen leakage risk through the App of the user's mobile phone. Figure 4 , the hydrogen management system controller can be set to connect to T-BOX, send signals to TSP background through T-BOX, and TSP background sends signals to the user's mobile phone.

[0102] When it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle, or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the hydrogen management system controller can also send the abnormal situation information to the fuel cell system controller directly or via the second transfer device; the fuel cell system controller reduces power or shuts down according to the abnormal situation information. The second transfer device can be a vehicle controller. Figure 3 When it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the hydrogen management system controller sends the abnormal situation information to the vehicle controller; the vehicle controller sends an emergency message to the fuel cell system controller according to the abnormal situation information; the fuel cell system controller shuts down or reduces to a preset minimum power according to the emergency message.

[0103] The above-mentioned step of sending abnormal situation information to the user end and the fuel cell system controller is also applicable to the driving process scenario and the parking scenario.

[0104] Regarding the driving process scenario, the above-mentioned preset abnormal conditions may include at least one of the following:

[0105] During driving, the pressure monitored by any pressure sensor exceeds a preset eighth threshold;

[0106] During driving, the pressure monitored by any pressure sensor is lower than a preset ninth threshold; the ninth threshold is lower than the eighth threshold;

[0107] During driving, the pressure change rate monitored by any pressure sensor exceeds the preset tenth threshold;

[0108] During driving, the temperature monitored by any temperature sensor exceeds the preset eleventh threshold;

[0109] During driving, the temperature monitored by any temperature sensor is lower than a preset twelfth threshold; the twelfth threshold is lower than the eleventh threshold;

[0110] During driving, the temperature change rate monitored by any temperature sensor exceeds a preset thirteenth threshold;

[0111] During driving, the concentration monitored by any hydrogen concentration sensor exceeds the preset fourteenth threshold;

[0112] During driving, a safety valve communication failure was detected.

[0113] During driving, the eighth threshold value may be decreased in a preset manner, for example, the power of the fuel cell may be recorded by the vehicle control device to obtain the rate of change of the eighth threshold value. As the hydrogen is gradually consumed during driving, the pressure of the hydrogen storage bottle will decrease under normal circumstances, and adjusting the eighth threshold value to decrease according to the power of the fuel cell can better monitor the pressure of the hydrogen storage bottle.

[0114] It is also possible to set the tenth threshold to change when the power of the fuel cell changes. This allows for flexible adjustments based on driving style and better monitoring of the pressure in the hydrogen storage tank.

[0115] It can be set that during driving, when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the safety valve is cut off and the sound and light alarm of the combination instrument is triggered, such as Figure 4 , the hydrogen management system controller can be set to connect to the instrument cluster. The instrument cluster can promptly remind the driver of the risk and facilitate the communication of the alarm information.

[0116] Regarding the parking scenario, the above-mentioned preset abnormal conditions may include at least one of the following:

[0117] During parking, the pressure monitored by any pressure sensor exceeds a preset fifteenth threshold;

[0118] During parking, the pressure monitored by any pressure sensor is lower than a preset sixteenth threshold; the sixteenth threshold is lower than the fifteenth threshold;

[0119] During parking, the pressure change rate monitored by any pressure sensor exceeds a preset seventeenth threshold; the seventeenth threshold is less than the third threshold, and the seventeenth threshold is less than the tenth threshold;

[0120] During parking, the temperature monitored by any temperature sensor exceeds a preset eighteenth threshold;

[0121] During parking, the temperature monitored by any temperature sensor is lower than a preset nineteenth threshold; the nineteenth threshold is lower than the eighteenth threshold;

[0122] During parking, the temperature change rate monitored by any temperature sensor exceeds the preset 20th threshold;

[0123] During parking, the concentration monitored by any hydrogen concentration sensor exceeds the preset 21st threshold;

[0124] During parking, a safety valve communication failure was detected.

[0125] In any scenario, the hydrogen management system controller can also record key data for subsequent analysis. The fluid simulation model can be pre-set in the hydrogen management system controller. The fluid simulation model can be independently designed for different vehicle models. The hydrogen system control method can also include: the hydrogen management system controller combines the fluid simulation model and sensor data to achieve precise positioning of the hydrogen leakage position, which is conducive to targeted maintenance and safety assurance.

[0126] Based on the above embodiments, the embodiments of the present application also provide a hydrogen management system controller, in which a computer program or instruction is stored. When the computer program or instruction is executed by the hydrogen management system controller, the above hydrogen system control method is implemented.

[0127] Based on the above embodiments, the embodiments of the present application also provide a fuel cell vehicle, including the above-mentioned hydrogen management system controller. The hydrogen system control method may include a hydrogen leakage pressure control strategy, which is a core element to ensure the safety of the hydrogen system of the fuel cell vehicle. The strategy is closely combined with the working principle of the fuel cell system and the characteristics of hydrogen, and effectively curbs hydrogen leakage by building a multi-level monitoring and response mechanism. In various usage scenarios such as hydrogen refueling, driving and long-term storage, the hydrogen system control method plays a vital role.

[0128] In summary, the hydrogen system control method can achieve the following beneficial effects:

[0129] 1. Full-scenario coverage: Ensure that the leakage pressure of the hydrogen system can be effectively monitored and controlled in all scenarios such as hydrogen refueling, driving and long-term parking. Compared with traditional solutions, this solution is more accurate in leakage monitoring during the hydrogen refueling process and can promptly detect and deal with potential leakage risks.

[0130] 2. Multi-sensor fusion: Integrate multiple data sources such as pressure sensors and concentration sensors, use data mining and intelligent algorithms to achieve fusion processing of multi-source information, and improve the accuracy and reliability of leak detection.

[0131] 3. Accurate positioning and early warning: Combine fluid simulation models and sensor data to achieve accurate positioning and early warning of hydrogen leaks.

[0132] 4. Rapid emergency response and remote monitoring: Build a rapid response mechanism to ensure prompt action in the event of a sudden hydrogen leak, and ensure the safety of vehicles and personnel through remote monitoring and alarm functions to reduce the risk and consequences of accidents.

[0133] The above-described device and system embodiments are merely illustrative, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. A person skilled in the art may understand and implement the present embodiment without creative effort.

[0134] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A hydrogen system control method, characterized in that: Hydrogen management system controller used in hydrogen systems; The hydrogen system includes a fuel cell, a hydrogen storage bottle, a safety valve and a sensor, wherein the sensor includes a hydrogen concentration sensor, a temperature sensor and a pressure sensor; the number of the hydrogen concentration sensors is greater than or equal to 2; The hydrogen concentration sensor is arranged above the fuel cell and above the hydrogen storage bottle, and the hydrogen concentration sensor is used to provide hydrogen concentration data; The temperature sensor and the pressure sensor are arranged in the hydrogen storage bottle; The temperature sensor is used to provide temperature data inside the hydrogen storage bottle; the pressure sensor is used to provide pressure data inside the hydrogen storage bottle; The hydrogen system control method comprises: Acquiring the hydrogen concentration data, the temperature data in the hydrogen storage bottle, and the pressure data in the hydrogen storage bottle; When it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet a preset abnormal condition, the safety valve is cut off; The hydrogen management system controller stores safety thresholds of data monitored by the sensor in the following three scenarios: hydrogen refueling, driving, and parking; The preset abnormal conditions include: In any scenario, the data monitored by any one of the sensors exceeds the safety threshold corresponding to the sensor in the scenario.

2. The hydrogen system control method according to claim 1, characterized in that: The preset abnormal condition includes at least one of the following: In the case where the hydrogen management system controller communicates with the hydrogenation equipment of the hydrogenation station, during the hydrogenation process, an abnormal signal from the hydrogenation equipment is received or a communication interruption with the hydrogenation equipment is detected; In the case where the hydrogen management system controller communicates with the vehicle controller, during the hydrogen refueling process, an abnormal signal from the vehicle controller is received or a communication interruption with the vehicle controller is detected, and the abnormal signal from the vehicle controller includes a hydrogen refueling prohibition instruction; During the hydrogenation process, the pressure monitored by any pressure sensor exceeds a preset first threshold; During the hydrogenation process, the pressure monitored by any pressure sensor is lower than a preset second threshold; the second threshold is lower than the first threshold; During the hydrogenation process, the pressure change rate monitored by any pressure sensor exceeds a preset third threshold value; During the hydrogenation process, the temperature monitored by any temperature sensor exceeds a preset fourth threshold value; During the hydrogenation process, the temperature monitored by any temperature sensor is lower than a preset fifth threshold; the fifth threshold is lower than the fourth threshold; During the hydrogenation process, the temperature change rate monitored by any temperature sensor exceeds a preset sixth threshold value; During the hydrogen refueling process, the concentration monitored by any hydrogen concentration sensor exceeds a preset seventh threshold value.

3. The hydrogen system control method according to claim 1, characterized in that: In the case where the hydrogen management system controller communicates with the hydrogen refueling equipment in a wireless manner, the hydrogen system control method further includes: when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle, or the pressure data in the hydrogen storage bottle meet a preset abnormal condition, stopping sending a wireless signal to the hydrogen refueling equipment; when the hydrogen refueling equipment cannot detect the wireless signal of the hydrogen management system controller, stopping hydrogen refueling; In the case where the hydrogen management system controller communicates directly or indirectly with the server, the hydrogen system control method further includes: when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, sending the abnormal situation information to the server directly or via the first transfer device; the server processes the received abnormal situation information and sends it to the user end; In the case where the hydrogen management system controller communicates directly or indirectly with the fuel cell system controller, the hydrogen system control method also includes: when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the abnormal situation information is sent directly to the fuel cell system controller or via a second transfer device; the fuel cell system controller reduces power or shuts down according to the abnormal situation information.

4. The hydrogen system control method according to claim 1, characterized in that: The preset abnormal condition includes at least one of the following: During driving, the pressure monitored by any pressure sensor exceeds a preset eighth threshold; During driving, the pressure monitored by any pressure sensor is lower than a preset ninth threshold; the ninth threshold is lower than the eighth threshold; During driving, the pressure change rate monitored by any pressure sensor exceeds the preset tenth threshold; During driving, the temperature monitored by any temperature sensor exceeds the preset eleventh threshold; During driving, the temperature monitored by any temperature sensor is lower than a preset twelfth threshold; the twelfth threshold is lower than the eleventh threshold; During driving, the temperature change rate monitored by any temperature sensor exceeds a preset thirteenth threshold; During driving, the concentration monitored by any hydrogen concentration sensor exceeds the preset fourteenth threshold; During driving, a communication failure of the safety valve is detected.

5. The hydrogen system control method according to claim 4, characterized in that: During driving, the eighth threshold value decreases in a preset manner; when the power of the fuel cell changes, the tenth threshold value changes.

6. The hydrogen system control method according to claim 1, characterized in that: The preset abnormal condition includes at least one of the following: During parking, the pressure monitored by any pressure sensor exceeds a preset fifteenth threshold; During parking, the pressure monitored by any pressure sensor is lower than a preset sixteenth threshold; the sixteenth threshold is lower than the fifteenth threshold; During parking, the rate of change of pressure monitored by any pressure sensor exceeds a preset seventeenth threshold; During parking, the temperature monitored by any temperature sensor exceeds a preset eighteenth threshold; During parking, the temperature monitored by any temperature sensor is lower than a preset nineteenth threshold; the nineteenth threshold is lower than the eighteenth threshold; During parking, the temperature change rate monitored by any temperature sensor exceeds the preset 20th threshold; During parking, the concentration monitored by any hydrogen concentration sensor exceeds the preset 21st threshold; During parking, a safety valve communication failure is detected.

7. The hydrogen system control method according to claim 1, characterized in that: The hydrogen system control method further includes: During driving, when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the safety valve is cut off and the sound and light alarm of the combination instrument is triggered; During the parking process, when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle or the pressure data in the hydrogen storage bottle meet the preset abnormal conditions, the abnormal situation information is sent directly to the server or through a transfer device; the server processes the received abnormal situation information and sends it to the user end.

8. The hydrogen system control method according to claim 1, characterized in that: The hydrogen system is located in a fuel cell vehicle, and the fuel cell vehicle includes a vehicle controller and a fuel cell system controller; The vehicle controller, the fuel cell system controller and the hydrogen management system controller communicate via a bus; The hydrogen system control method further includes: when it is determined that the hydrogen concentration data, the temperature data in the hydrogen storage bottle, or the pressure data in the hydrogen storage bottle meets a preset abnormal condition, sending abnormal condition information to the vehicle controller; The vehicle controller sends an emergency message to the fuel cell system controller according to the abnormal situation information; the fuel cell system controller shuts down or reduces the power to a preset minimum power according to the emergency message.

9. The hydrogen system control method according to claim 8, characterized in that: The number of the hydrogen concentration sensors is greater than or equal to 4; The hydrogen storage bottles are arranged at at least two locations of the fuel cell vehicle, and the hydrogen concentration sensor is arranged above each hydrogen storage bottle; the hydrogen concentration sensor is also arranged in the passenger compartment of the fuel cell vehicle.

10. A hydrogen management system controller, characterized in that: A computer program or instruction is stored in the hydrogen management system controller. When the computer program or instruction is executed by the hydrogen management system controller, the hydrogen system control method according to any one of claims 1 to 9 is implemented.

Images