Interaction method and device of hydrogen supply system and hydrogen engine control system and vehicle

Abstract

The invention discloses an interaction method and device of a hydrogen supply system and a hydrogen engine control system and a vehicle. The method comprises the steps that in the operation process, a hydrogen supply system obtains the system fault level of the hydrogen supply system, and a hydrogen engine control system obtains the hydrogen leakage fault level; when the hydrogen leakage fault level is greater than or equal to a first preset fault level, the hydrogen engine control system outputs a first control signal to control the hydrogen supply system to stop supplying hydrogen; and when the system fault level is larger than or equal to a second preset fault level, the hydrogen supply system outputs a second control signal to control the hydrogen engine to run in a torque limiting mode. Through a system interactive monitoring and feedback mechanism, the hydrogen engine control system can control the hydrogen supply system to stop supplying hydrogen, and the hydrogen supply system controls the hydrogen engine to run in a torque limiting manner. Hydrogen supply and engine operation states can be monitored in real time, and faults can be detected and diagnosed. And harm and potential safety problems possibly caused by hydrogen are effectively avoided, and the driving safety of the vehicle is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to an interaction method and device between a hydrogen supply system and a hydrogen engine control system, and a vehicle. Background Art

[0002] As the global demand for carbon reduction and energy transformation grows, hydrogen engine vehicles have broad development prospects. However, the use of hydrogen has potential safety risks, such as leakage and explosion, which makes hydrogen engine vehicles have safety issues. Summary of the invention

[0003] The present invention provides an interaction method and device for a hydrogen supply system and a hydrogen engine control system, and a vehicle, so as to solve the hazards and potential safety problems that may be caused by hydrogen.

[0004] In a first aspect, an embodiment of the present invention provides an interaction method between a hydrogen supply system and a hydrogen engine control system, wherein the hydrogen supply system is communicatively connected to the hydrogen engine control system; the interaction method comprises: during operation, the hydrogen supply system obtains a system fault level of the hydrogen supply system, and the hydrogen engine control system obtains a hydrogen leakage fault level; when the hydrogen leakage fault level is greater than or equal to a first preset fault level, the hydrogen engine control system outputs a first control signal to control the hydrogen supply system to stop supplying hydrogen; when the system fault level is greater than or equal to a second preset fault level, the hydrogen supply system outputs a second control signal to control the hydrogen engine to operate with limited torque.

[0005] Optionally, after the hydrogen supply system obtains the system fault level of the hydrogen supply system and the hydrogen engine control system obtains the hydrogen leakage fault level, it also includes: when the system fault level is greater than or equal to a third preset fault level, the hydrogen supply system stops supplying hydrogen; wherein the third preset fault level is greater than the second preset fault level.

[0006] Optionally, after the hydrogen supply system obtains the system fault level of the hydrogen supply system and the hydrogen engine control system obtains the hydrogen leakage fault level, it also includes: when the system fault level is less than or equal to a fourth preset fault level, the hydrogen supply system controls the hydrogen engine to operate normally; wherein the fourth preset fault level is less than the second preset fault level.

[0007] Optionally, when the system fault level is less than or equal to a fourth preset fault level, the hydrogen supply system outputs a third control signal to control the normal operation of the hydrogen engine, and also includes: if the system fault includes the remaining hydrogen being less than a preset hydrogen value, the hydrogen supply system sends a low gas volume signal to the hydrogen engine control system; the hydrogen engine control system controls the hydrogen engine to shut down after a first preset time delay according to the low gas volume signal.

[0008] Optionally, after the hydrogen supply system obtains the system fault level of the hydrogen supply system and the hydrogen engine control system obtains the hydrogen leakage fault level, it also includes: when the hydrogen leakage fault level is greater than or equal to a fifth preset fault level, the hydrogen engine control system controls the hydrogen engine to operate with limited torque; wherein the fifth preset fault level is lower than the first preset fault level.

[0009] Optionally, after the hydrogen supply system obtains the system fault level of the hydrogen supply system and the hydrogen engine control system obtains the hydrogen leakage fault level, it also includes: when the hydrogen leakage fault level is less than the fifth preset fault level, the hydrogen engine control system obtains the hydrogen gas rail pressure; when the gas rail pressure is greater than or equal to a first preset pressure and less than or equal to a second preset pressure, the hydrogen engine control system controls the hydrogen engine to operate normally; wherein, the first preset pressure is less than the second preset pressure.

[0010] Optionally, after obtaining the hydrogen rail pressure, the method further includes: when the rail pressure is less than the first preset pressure or greater than the second preset pressure, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen after a delay of a second preset time.

[0011] Optionally, when the hydrogen leakage fault level is greater than or equal to a first preset fault level, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen, including: when the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen engine control system controls the bottle valve of the hydrogen supply system to close after a delay of a third preset time.

[0012] Optionally, before the hydrogen supply system obtains the system fault level of the hydrogen supply system and the hydrogen engine control system obtains the hydrogen leakage fault level, it also includes: verifying the communication status of the hydrogen supply system and the hydrogen engine control system; when the communication status is abnormal, the hydrogen engine control system controls the hydrogen engine to shut down after a delay of a fourth preset time, and the hydrogen supply system stops supplying hydrogen after a delay of a fifth preset time.

[0013] Optionally, when the hydrogen supply system fails and / or the hydrogen leaks, the method further includes: the hydrogen engine control system outputting an alarm signal.

[0014] Optionally, the interaction method between the hydrogen supply system and the hydrogen engine control system also includes: when power is turned on, the hydrogen engine control system and the hydrogen supply system are powered on according to a start-up instruction; after power is turned on, the hydrogen engine control system controls the hydrogen supply system to start supplying hydrogen; when the start-up instruction lasts for more than a sixth preset time, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen.

[0015] Optionally, the method of interaction between the hydrogen supply system and the hydrogen engine control system also includes: when shutting down, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen according to the shutdown instruction; the hydrogen engine control system controls the hydrogen engine to shut down and purge.

[0016] In a second aspect, an embodiment of the present invention further provides an interactive device between a hydrogen supply system and a hydrogen engine control system, wherein the hydrogen supply system is communicatively connected with the hydrogen engine control system; the device comprises:

[0017] The hydrogen supply system includes a first acquisition module and a first control module, and the hydrogen engine control system includes a second acquisition module and a second control module; the first acquisition module is used to obtain the system fault level of the hydrogen supply system during operation; the second acquisition module is used to obtain the hydrogen leakage fault level during operation; the first control module is used to control the hydrogen engine to operate with limited torque when the system fault level is greater than or equal to a second preset fault level, and the second control module is used to control the hydrogen supply system to stop supplying hydrogen when the hydrogen leakage fault level is greater than or equal to the first preset fault level.

[0018] In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method of interaction between the hydrogen supply system and the hydrogen engine control system described in any of the above embodiments when executed.

[0019] In a fourth aspect, an embodiment of the present invention further provides a vehicle, comprising an interactive device between the hydrogen supply system and the hydrogen engine control system as described in any of the above embodiments.

[0020] The technical solution of the embodiment of the present invention, by setting the hydrogen supply system to interact with the hydrogen engine control system, can control the hydrogen supply system to stop supplying hydrogen when the hydrogen leakage fault level is greater than or equal to the first preset fault level; when the system fault level is greater than or equal to the second preset fault level, the hydrogen supply system controls the hydrogen engine to operate with limited torque. This can ensure the safe operation of the hydrogen engine. The hydrogen supply and engine operating status can be monitored in real time, and faults can be detected and diagnosed. It effectively avoids the hazards and potential safety issues that may be caused by hydrogen, which is beneficial to the driving safety of the vehicle.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A flowchart of an interaction method between a hydrogen supply system and a hydrogen engine control system provided according to an embodiment of the present invention;

[0024] Figure 2 A flowchart of another method for interaction between a hydrogen supply system and a hydrogen engine control system provided according to an embodiment of the present invention;

[0025] Figure 3 A flow chart of another method for interaction between a hydrogen supply system and a hydrogen engine control system provided by an embodiment of the present invention;

[0026] Figure 4 A flow chart of another method for interaction between a hydrogen supply system and a hydrogen engine control system provided by an embodiment of the present invention;

[0027] Figure 5 A flowchart of a method for interaction between a hydrogen supply system and a hydrogen engine control system when a vehicle is powered on according to an embodiment of the present invention;

[0028] Figure 6 The figure is a schematic diagram of the structure of an interactive device between a hydrogen supply system and a hydrogen engine control system provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] An embodiment of the present invention provides an interaction method between a hydrogen supply system and a hydrogen engine control system, which can be applied to a situation where the hydrogen supply system provides hydrogen to a hydrogen engine controlled by the hydrogen engine control system as an energy source for the hydrogen engine. Exemplarily, the hydrogen supply system and the hydrogen engine control system are arranged in a vehicle, and the hydrogen engine control system controls the operating state of the hydrogen engine. When the hydrogen engine is running, the hydrogen supply system provides hydrogen to the hydrogen engine as an energy source for the hydrogen engine, so that the hydrogen engine can drive the vehicle to operate. The method can be executed by an interaction device between the hydrogen supply system and the hydrogen engine control system, which can be implemented in the form of hardware and / or software, and which can be configured in a vehicle equipped with a hydrogen engine. The hydrogen supply system is communicatively connected to the hydrogen engine control system, Figure 1 A flow chart of an interaction method between a hydrogen supply system and a hydrogen engine control system provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the method includes:

[0032] S101. During operation, the hydrogen supply system obtains a system fault level of the hydrogen supply system, and the hydrogen engine control system obtains a hydrogen leakage fault level;

[0033] Among them, the system fault level of the hydrogen supply system is used to characterize the degree of fault of the hydrogen supply system itself. The higher the system fault level of the hydrogen supply system, the more serious the system fault of the hydrogen supply system can be characterized. The hydrogen supply system may include a hydrogen cylinder, a first hydrogen supply pipeline, a first detection device and a first control device. The hydrogen cylinder is used to store hydrogen, and the hydrogen supply pipeline is used to control the amount of hydrogen provided by the hydrogen cylinder. Exemplarily, the hydrogen supply pipeline includes a bottle valve and a pressure reducing valve, etc. The first detection device is used to detect the state of the hydrogen cylinder and the hydrogen supply pipeline. Exemplarily, the first detection device may include a first hydrogen leakage concentration sensor, a first temperature sensor and a first pressure sensor, etc. The first control device is connected to the first detection device, and is used to determine the system fault level according to the detection signal provided by the first detection device, and control the state of the hydrogen supply system according to the system fault level. For example, when the hydrogen supply pipeline includes a bottle valve, the opening state of the bottle valve can be controlled. Exemplarily, the system fault level of the hydrogen supply system can be divided into three levels. The system fault represented by the level 1 fault is relatively small, for example, it may include the hydrogen supply system bottle valve temperature sensor failure, the hydrogen supply system bottle valve coil open circuit, the hydrogen supply system output 5V power supply failure, the hydrogen supply system dynamic gas supply pipe pressure is too low and the hydrogen supply system low pressure pressure sensor failure, etc.; the system fault severity represented by the level 2 fault is greater than the system fault severity represented by the level 1 fault. For example, it may include the hydrogen supply system controller and the fieldbus control system (FieldbusControl System, FCS) communication failure, the hydrogen supply system controller power supply failure, the hydrogen supply system hydrogen leakage concentration sensor failure, the hydrogen supply system high pressure pressure sensor failure, the hydrogen supply system output 12V power failure, the hydrogen supply system hydrogen supply pipeline pressure reducing valve solenoid valve open circuit, the hydrogen supply system gas tank pressure is too high, the hydrogen supply system gas bottle temperature is too high and the hydrogen supply system gas tank pressure is too low, etc.; the system fault severity represented by the level 3 fault is greater than the system fault severity represented by the level 2 fault. For example, it may include the hydrogen leakage concentration is too high fault.

[0034] The hydrogen leakage fault level is used to characterize the degree of hydrogen leakage in the hydrogen transmission pipeline. The higher the hydrogen leakage fault level, the more serious the degree of hydrogen leakage can be characterized. The hydrogen engine control system may include a second hydrogen supply pipeline, a second detection device, and a second control device. The second hydrogen supply pipeline is used to supply hydrogen to the hydrogen engine. The second detection device is used for the hydrogen engine control system and the state of the second hydrogen supply pipeline. Exemplarily, the second detection device may include a second hydrogen leakage concentration sensor, a second temperature sensor, and a second pressure sensor. The second control device is connected to the second detection device, and is used to determine the hydrogen leakage fault level according to the detection signal provided by the second detection device, and control the state of the hydrogen engine according to the hydrogen leakage fault level. Exemplarily, the hydrogen leakage fault level can be divided into two levels, the hydrogen leakage fault characterized by the first-level fault is relatively small, which is a general leakage fault; the hydrogen leakage fault characterized by the second-level fault is more serious than the hydrogen leakage fault characterized by the first-level hydrogen leakage fault, which is a serious leakage fault.

[0035] S102, when the hydrogen leakage fault level is greater than or equal to a first preset fault level, the hydrogen engine control system outputs a first control signal to control the hydrogen supply system to stop supplying hydrogen;

[0036] Among them, the first preset fault level can be set according to the safety level of the hydrogen leakage. The higher the first preset fault level, the lower the safety level, and the operating efficiency of the system may not be restricted by strict safety requirements. Therefore, the operating efficiency may be higher. Exemplarily, when the hydrogen leakage fault level includes at least two levels, the first preset fault level can be a fault greater than or equal to the secondary hydrogen leakage fault. After obtaining the hydrogen leakage fault level, it can be determined whether the hydrogen leakage fault level is greater than or equal to the first preset fault level. When the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen engine control system outputs a first control signal to control the hydrogen supply system to stop supplying hydrogen, thereby realizing the interaction between the hydrogen engine control system and the hydrogen supply system, so that when the hydrogen leakage fault level is relatively high, the hydrogen supply system can be controlled to stop supplying hydrogen, ensuring the safety of the vehicle operation process.

[0037] S103: When the system fault level is greater than or equal to a second preset fault level, the hydrogen supply system outputs a second control signal to control the hydrogen engine to operate with limited torque.

[0038] Among them, the second preset fault level can be set according to the safety level of the system fault. The higher the second preset fault level, the lower the safety level, and the operating efficiency of the system may not be restricted by strict safety requirements. Therefore, the operating efficiency may be higher. Exemplarily, when the system fault level includes at least three levels, the second preset fault level is a fault that is greater than or equal to level 2 and less than level 3. After obtaining the system fault level, it can be determined whether the system fault level is greater than or equal to the second preset fault level. When the system fault level is greater than or equal to the second preset fault level, the hydrogen supply system outputs a second control signal to control the hydrogen engine to operate with limited torque, thereby realizing the interaction between the hydrogen supply system and the hydrogen engine control system to ensure the safe operation of the hydrogen engine.

[0039] The technical solution of the embodiment of the present invention, by setting the hydrogen supply system to interact with the hydrogen engine control system, can make the hydrogen engine control system output a first control signal to control the hydrogen supply system to stop supplying hydrogen when the hydrogen leakage fault level is greater than or equal to the first preset fault level; when the system fault level is greater than or equal to the second preset fault level, the hydrogen supply system outputs a second control signal to control the hydrogen engine to operate with limited torque. Thereby, the safe operation of the hydrogen engine can be ensured. The hydrogen supply and engine operating status can be monitored in real time, and faults can be detected and diagnosed. The hazards and potential safety issues that may be caused by hydrogen are effectively avoided, which is beneficial to the driving safety of the vehicle.

[0040] Figure 2 This is a flow chart of another method for interaction between a hydrogen supply system and a hydrogen engine control system provided by an embodiment of the present invention. This embodiment is based on the above embodiment and further adds a method for processing hydrogen supply systems and hydrogen engine control systems with other fault levels. Figure 2 As shown, the method includes:

[0041] S201. During operation, the hydrogen supply system obtains a system fault level of the hydrogen supply system, and the hydrogen engine control system obtains a hydrogen leakage fault level.

[0042] S202, when the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen engine control system outputs a first control signal to control the hydrogen supply system to stop supplying hydrogen;

[0043] S203: When the system fault level is greater than or equal to a third preset fault level, the hydrogen supply system stops supplying hydrogen; wherein the third preset fault level is greater than the second preset fault level.

[0044] Exemplarily, when the system fault level includes at least three levels, the third preset fault level is a fault greater than or equal to level 3. After obtaining the system fault level, it can be determined whether the system fault level is greater than or equal to the third preset fault level. The third preset fault level is greater than the second preset fault level. When the system fault level is greater than or equal to the third preset fault level, the system fault corresponding to the system fault level is more serious. At this time, the hydrogen supply system can be controlled to stop supplying hydrogen, thereby ensuring the safety of the vehicle operation process.

[0045] S204: When the system fault level is greater than or equal to a second preset fault level, the hydrogen supply system outputs a second control signal to control the hydrogen engine to operate with limited torque.

[0046] S205. When the system fault level is less than or equal to a fourth preset fault level, the hydrogen supply system outputs a third control signal to control the normal operation of the hydrogen engine; wherein the fourth preset fault level is less than the second preset fault level.

[0047] Exemplarily, when the system fault level includes at least three levels, the fourth preset fault level is a fault greater than or equal to level 1 and less than level 2. After obtaining the system fault level, it can be determined whether the system fault level is less than or equal to the fourth preset fault. The fourth preset fault level is less than the second preset fault level. When the system fault level is less than or equal to the fourth preset fault level, the system fault corresponding to the system fault level is relatively minor, and the hydrogen supply system outputs a third control signal to control the normal operation of the hydrogen engine, so that the vehicle can drive normally, and only the fault is recorded without restriction.

[0048] In some embodiments, if the system failure includes the remaining hydrogen being less than a preset hydrogen value, the hydrogen supply system outputs a third control signal to control the normal operation of the hydrogen engine, and also includes: the hydrogen supply system sends a low gas volume signal to the hydrogen engine control system; the hydrogen engine control system controls the hydrogen engine to shut down after a first preset time delay according to the low gas volume signal. Among them, the first preset time is a pre-set time within which the initial reaction or action must be completed. If the hydrogen supply system detects that the remaining hydrogen volume is extremely low, it will send a low gas volume signal to the hydrogen engine control system. After the hydrogen engine control system recognizes the signal and continues for the first preset time, it will send a valve closing command to control the hydrogen engine to shut down. Exemplarily, when the hydrogen supply system detects that the remaining hydrogen volume is extremely low, it sends a low gas volume signal to the hydrogen engine control system in the form of a message.

[0049] Figure 3 This is a flow chart of another method for interaction between a hydrogen supply system and a hydrogen engine control system provided by an embodiment of the present invention. This embodiment is based on the above embodiment and further adds a method for processing hydrogen supply systems and hydrogen engine control systems with other fault levels. Figure 3 As shown, the method includes:

[0050] S301. During operation, the hydrogen supply system obtains a system fault level of the hydrogen supply system, and the hydrogen engine control system obtains a hydrogen leakage fault level.

[0051] S302, when the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen engine control system outputs a first control signal to control the hydrogen supply system to stop supplying hydrogen;

[0052] S303: When the system fault level is greater than or equal to a second preset fault level, the hydrogen supply system outputs a second control signal to control the hydrogen engine to operate with limited torque.

[0053] S304. When the hydrogen leakage fault level is greater than or equal to the fifth preset fault level, the hydrogen engine control system controls the hydrogen engine to operate with limited torque; wherein the fifth preset fault level is less than the first preset fault level.

[0054] Exemplarily, when the hydrogen leakage fault level includes at least two levels, the fifth preset fault level is a fault that is greater than or equal to the first level hydrogen leakage fault and less than the second level hydrogen leakage fault. After obtaining the hydrogen leakage fault level, it can be determined whether the hydrogen leakage fault level is greater than or equal to the fifth preset fault level. The fifth preset fault level is less than the first preset fault level. When the hydrogen leakage fault level is greater than or equal to the fifth preset fault level, the hydrogen leakage fault corresponding to the hydrogen leakage fault level is lighter. At this time, the hydrogen engine control system controls the hydrogen engine to operate with limited torque. Ensure the safe operation of the hydrogen engine.

[0055] S305: When the hydrogen leakage fault level is less than the fifth preset fault level, the hydrogen engine control system obtains the hydrogen rail pressure.

[0056] Among them, the hydrogen rail pressure refers to the pressure of hydrogen in the hydrogen pipeline. Hydrogen needs to be stored and transported under a certain pressure to ensure the stable operation and performance of the engine. Exemplarily, after obtaining the hydrogen leakage fault level, it can be determined whether the hydrogen leakage fault level is less than the fifth preset fault level. When the hydrogen leakage fault level is less than the fifth preset fault level, the hydrogen leakage fault corresponding to the hydrogen leakage fault level is lighter, and the hydrogen engine runs normally. At this time, the hydrogen engine control system obtains the hydrogen rail pressure. In some optional embodiments of the present invention, after obtaining the hydrogen rail pressure, it also includes:

[0057] S306: When the gas rail pressure is greater than or equal to the first preset pressure and less than or equal to the second preset pressure, the hydrogen engine control system controls the hydrogen engine to run normally; wherein the first preset pressure is less than the second preset pressure.

[0058] The first preset pressure is a set pressure threshold for controlling or protecting the system. The second preset pressure refers to the second set pressure threshold, and the first preset pressure is less than the second preset pressure. When the hydrogen rail pressure is between the first preset pressure and the second preset pressure, it means that the hydrogen rail pressure is normal, and the hydrogen engine control system controls the hydrogen engine to operate normally.

[0059] S307: When the gas rail pressure is less than the first preset pressure or greater than the second preset pressure, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen after a delay of a second preset time.

[0060] Among them, if the pressure of the gas rail is less than the first preset pressure, it means that the pressure of the gas rail is too low, and if the pressure of the gas rail is greater than the second preset pressure, it means that the pressure of the gas rail is too high. The second preset time is another preset time within which the initial reaction or action must be completed. If the pressure is too high or too low, the fault protection mechanism will be triggered while reporting the obstacle. After the second preset time, the hydrogen engine control system will issue a valve closing command to the hydrogen supply system to stop supplying hydrogen.

[0061] In some optional embodiments of the present invention, when the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen, including: when the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen engine control system controls the bottle valve of the hydrogen supply system to close after a delay of a third preset time.

[0062] The third preset time is another preset time within which the initial reaction or action must be completed. When the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen leakage fault corresponding to the hydrogen leakage fault level is more serious. At this time, the hydrogen engine control system delays the third preset time to control the bottle valve of the hydrogen supply system to close and stop hydrogen supply.

[0063] In some optional embodiments of the present invention, before the hydrogen supply system obtains the system fault level of the hydrogen supply system and the hydrogen engine control system obtains the hydrogen leakage fault level, it also includes verifying the communication status of the hydrogen supply system and the hydrogen engine control system; when the communication status is abnormal, the hydrogen engine control system controls the hydrogen engine to shut down after a delay of a fourth preset time, and the hydrogen supply system stops supplying hydrogen after a delay of a fifth preset time.

[0064] Among them, the fourth preset time refers to a pre-set time, and the fifth preset time is a time subtracted from the fourth preset time. Exemplarily, the fourth preset time is 15S, and the subtracted time can be 5S, then the fifth preset time is 10S. That is, when the communication status is abnormal, the hydrogen engine control system reports a specific fault and triggers the fault protection mechanism. After the fourth preset time, the hydrogen engine is controlled to shut down. After the hydrogen supply system reports a specific fault and continues for the fifth preset time, it automatically closes the valve and stops hydrogen supply. Shutting down the hydrogen supply system after shutting down the hydrogen engine helps to ensure complete combustion of the fuel, avoid residual fuel accumulation and hydrogen leakage, and reduce safety risks.

[0065] In some optional embodiments of the present invention, when a hydrogen supply system failure and / or a hydrogen leakage failure occurs, the hydrogen engine control system outputs an alarm signal.

[0066] Among them, when the hydrogen supply system fails and / or hydrogen leaks, the hydrogen engine control system will output an alarm signal. Exemplarily, if the hydrogen supply system fails and / or hydrogen leaks, the hydrogen engine control system outputs an alarm signal including lighting up the hydrogen leak alarm indicator light on the vehicle instrument and sending a signal to the instrument for a text + voice reminder of "hydrogen leakage". When it involves a more serious hydrogen supply system failure and / or hydrogen leakage failure, it is necessary to stop the hydrogen supply and close the valve. The hydrogen engine control system will send a signal to the vehicle instrument for a text + voice reminder "The vehicle will be turned off in xx seconds, please pull over and repair as soon as possible."

[0067] The technical solution of the embodiment of the present invention obtains the system fault level of the hydrogen supply system through the hydrogen supply system, and the hydrogen engine control system obtains the hydrogen leakage fault level and the hydrogen gas rail pressure. According to different fault levels and different hydrogen gas rail pressures, different interactions between the hydrogen supply system and the hydrogen engine control system and the respective system's processing methods for different faults are realized. When the hydrogen gas rail pressure is too high or too low, the hydrogen engine control system can control the hydrogen supply system to stop supplying hydrogen. The hydrogen supply and engine operating status can be monitored in real time, and faults can be detected and diagnosed. It effectively avoids various safety issues that may be encountered by hydrogen-related vehicles, which is beneficial to the driving safety of vehicles.

[0068] Figure 4 A flowchart of another method for interaction between a hydrogen supply system and a hydrogen engine control system provided by an embodiment of the present invention is shown in FIG. Figure 4As shown, during the interaction between the hydrogen supply system and the hydrogen engine control system, it is possible to first verify whether the hydrogen supply system and the hydrogen engine control system can communicate normally. That is, the hydrogen supply system verifies whether it communicates normally with the hydrogen engine control system, and the hydrogen engine control system verifies whether it communicates normally with the hydrogen supply system. When the hydrogen supply system and the hydrogen engine control system cannot communicate normally, the hydrogen supply system stops supplying hydrogen automatically after reporting an error and delaying the fifth preset time. When the hydrogen engine control system and the hydrogen supply system cannot communicate normally, the hydrogen engine control system performs fault diagnosis (Fault Isolation and Diagnosis, FID) after reporting an error, and controls the hydrogen engine to shut down after delaying the fourth preset time. When the hydrogen supply system and the hydrogen engine control system can communicate normally, the hydrogen supply system obtains the system fault level of the hydrogen supply system, and the hydrogen engine control system obtains the hydrogen leakage fault level.

[0069] When the system fault level is greater than or equal to the third preset fault level, the hydrogen supply system stops supplying hydrogen; wherein the third preset fault level is greater than the second preset fault level. When the system fault level is greater than or equal to the second preset fault level, the hydrogen supply system outputs a second control signal to control the hydrogen engine to operate with limited torque. When the system fault level is less than or equal to the fourth preset fault level, the hydrogen supply system outputs a third control signal to control the normal operation of the hydrogen engine; wherein the fourth preset fault level is less than the second preset fault level. When the system fault level is less than the fourth preset fault level, the hydrogen supply system outputs a third control signal to control the normal operation of the hydrogen engine, and also includes: if the system fault includes the remaining hydrogen being less than the preset hydrogen value, the hydrogen supply system sends a low gas volume signal to the hydrogen engine control system; the hydrogen engine control system controls the hydrogen engine to shut down after a first preset time delay according to the low gas volume signal.

[0070] When the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen engine control system outputs a first control signal to control the hydrogen supply system to stop supplying hydrogen; when the hydrogen leakage fault level is greater than or equal to the fifth preset fault level, the hydrogen engine control system controls the hydrogen engine to operate with limited torque; wherein the fifth preset fault level is less than the first preset fault level. When the hydrogen leakage fault level is less than the fifth preset fault level, the hydrogen engine control system obtains the hydrogen rail pressure; when the rail pressure is greater than or equal to the first preset pressure and less than or equal to the second preset pressure, the hydrogen engine control system controls the hydrogen engine to operate normally; wherein the first preset pressure is less than the second preset pressure. When the rail pressure is less than the first preset pressure or greater than the second preset pressure, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen after a delay of a second preset time. When the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen, including when the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen engine control system controls the bottle valve of the hydrogen supply system to close after a delay of a third preset time.

[0071] Figure 5 The flowchart of the method for interaction between the hydrogen supply system and the hydrogen engine control system when the vehicle is powered on according to an embodiment of the present invention is shown in FIG. Figure 5 As shown, the method includes:

[0072] S401, when power is turned on, the hydrogen engine control system and the hydrogen supply system are powered on according to the start-up instruction;

[0073] Among them, after the vehicle key door is turned to the ON position, the hydrogen engine control system and the hydrogen supply system are powered on.

[0074] S402, after power-on, the hydrogen engine control system controls the hydrogen supply system to start supplying hydrogen;

[0075] Among them, the hydrogen engine control system sends a valve opening command to the hydrogen supply system. After the hydrogen supply system receives the valve opening command, it opens the bottle valve and the hydrogen supply system starts to supply hydrogen.

[0076] S403: When the duration of the start instruction is greater than a sixth preset time, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen.

[0077] The sixth preset time refers to a preset time, which may be 15S, 30S, or 60S, for example. The start command duration refers to the time from when the hydrogen engine control system and the hydrogen supply system are powered on to when the key door is in the ST gear. If the start command duration is greater than the sixth preset time, the hydrogen engine control system sends a valve closing command to the hydrogen supply system. After receiving the valve closing command, the hydrogen supply system closes the bottle valve and stops supplying hydrogen.

[0078] In some optional embodiments of the present invention, the interaction method between the hydrogen supply system and the hydrogen engine control system also includes: when shutting down, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen according to the shutdown instruction; the hydrogen engine control system controls the hydrogen engine to shut down and purge.

[0079] When the key door is turned OFF, the hydrogen engine control system will send a valve closing command. After receiving the valve closing command, the hydrogen supply system will close the bottle valve and stop supplying hydrogen. The hydrogen engine control system will shut down and purge. After sending the valve closing command, it will actively control the gas nozzle to continue to switch on and off several times to empty the residual hydrogen in the hydrogen pipeline and discharge it into the cylinder with the exhaust of the hydrogen engine.

[0080] The technical solution of the embodiment of the present invention is to interact with the hydrogen supply system and the hydrogen engine control system during power-on and power-off, and to handle different problems in each system. The hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen, effectively avoiding safety issues when hydrogen-related vehicles are powered on and off.

[0081] Figure 6 The structure diagram of the interactive device between a hydrogen supply system and a hydrogen engine control system provided by an embodiment of the present invention is shown in FIG. Figure 6 As shown, the hydrogen supply system is connected to the hydrogen engine control system in communication; the device includes:

[0082] The hydrogen supply system includes a first acquisition module and a first control module, and the hydrogen engine control system includes a second acquisition module and a second control module; the first acquisition module is used to acquire the system fault level of the hydrogen supply system during operation; the second acquisition module is used to acquire the hydrogen leakage fault level during operation; the first control module is used to output a second control signal to control the hydrogen engine to operate with limited torque when the system fault level is greater than or equal to the second preset fault level, and the second control module is used to output a first control signal to control the hydrogen supply system to stop supplying hydrogen when the hydrogen leakage fault level is greater than or equal to the first preset fault level. An interactive device for a hydrogen supply system and a hydrogen engine control system provided in an embodiment of the present invention can execute an interactive method for a hydrogen supply system and a hydrogen engine control system provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

[0083] In some embodiments, the second control module is specifically used to control the bottle valve of the hydrogen supply system to close after the hydrogen engine control system delays for a third preset time when the hydrogen leakage fault level is greater than or equal to the first preset fault level.

[0084] In some embodiments, the first control module is further used to control the hydrogen supply system to stop supplying hydrogen when the system fault level is greater than or equal to a third preset fault level; wherein the third preset fault level is greater than the second preset fault level.

[0085] In some embodiments, the first control module is also used to output a third control signal to the hydrogen supply system to control the normal operation of the hydrogen engine when the system fault level is less than or equal to a fourth preset level fault; wherein the fourth preset level fault is less than the second preset level fault.

[0086] In some embodiments, the first control module is also used to control the hydrogen engine to operate normally when the system fault level is less than or equal to a fourth preset level of fault, and the hydrogen supply system controls the hydrogen engine to operate normally. If the system fault includes the remaining hydrogen being less than a preset hydrogen value, the hydrogen supply system sends a low gas volume signal to the hydrogen engine control system; the hydrogen engine control system controls the hydrogen engine to shut down after a first preset time delay according to the low gas volume signal.

[0087] In some embodiments, the second control module is also used to control the hydrogen engine to operate with limited torque when the hydrogen leakage fault level is greater than or equal to a fifth preset fault level, and the hydrogen engine control system controls the hydrogen engine to operate with limited torque; wherein the fifth preset fault level is less than the first preset fault level.

[0088] In some embodiments, the hydrogen engine control system also includes a third acquisition module, which is used for the hydrogen engine control system to obtain the hydrogen rail pressure when the hydrogen leakage fault level is less than the fifth preset level fault; the second control module is also used for the hydrogen engine control system to control the hydrogen engine to operate normally when the rail pressure is greater than or equal to the first preset pressure and less than or equal to the second preset pressure; wherein the first preset pressure is less than the second preset pressure.

[0089] In some embodiments, the second control module is further configured to control the hydrogen supply system to stop supplying hydrogen after a second preset time delay when the gas rail pressure is less than a first preset pressure or greater than a second preset pressure.

[0090] In some embodiments, the interaction device between the hydrogen supply system and the hydrogen engine control system also includes a communication verification module, which is used to verify the communication status of the hydrogen supply system and the hydrogen engine control system before the hydrogen supply system obtains the system fault level of the hydrogen supply system and the hydrogen engine control system obtains the hydrogen leakage fault level; when the communication status is abnormal, the second control module is also used for the hydrogen engine control system to control the hydrogen engine to stop after a fourth preset delay time, and the first control module is also used for the hydrogen supply system to stop supplying hydrogen after a fifth preset delay time.

[0091] In some embodiments, the interaction device between the hydrogen supply system and the hydrogen engine control system further includes an alarm display module, which is used for the hydrogen engine control system to output an alarm signal when there is a hydrogen supply system failure and / or a hydrogen leakage failure.

[0092] In some embodiments, the first control module and the second control module are also used to power on the hydrogen engine control system and the hydrogen supply system according to the start-up instruction when power is turned on; the second control module is also used to control the hydrogen engine control system to start supplying hydrogen after power is turned on; the second module is also used to control the hydrogen engine control system to stop supplying hydrogen when the duration of the start-up instruction is greater than a sixth preset time.

[0093] In some embodiments, the second module is also used for the hydrogen engine control system to control the hydrogen supply system to stop supplying hydrogen according to the shutdown instruction when the engine is shut down; the second module is also used for the hydrogen engine control system to control the hydrogen engine to shut down and perform purging.

[0094] In some embodiments, the interaction device between the hydrogen supply system and the hydrogen engine control system also includes a timing module, which is used to stop the hydrogen supply after timing to a specific preset time when a more serious hydrogen supply system failure and / or hydrogen leakage failure requires stopping the hydrogen supply and closing the valve.

[0095] An embodiment of the present invention also provides a computer storage medium storing a computer program, which, when executed by a computer processor, is used to execute the method of interaction between the hydrogen supply system and the hydrogen engine control system described in any of the above embodiments of the present invention. The computer program for implementing the method of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flowchart and / or block diagram are implemented. The computer program can be executed entirely on the machine, partially on the machine, partially on the machine as an independent software package and partially on a remote machine, or entirely on a remote machine or server.

[0096] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device, or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0097] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0098] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0099] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0100] An embodiment of the present invention further provides a vehicle, comprising the interactive device between the hydrogen supply system and the hydrogen engine control system described in any one of the above embodiments of the present invention.

[0101] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for interaction between a hydrogen supply system and a hydrogen engine control system, characterized in that: The hydrogen supply system is communicatively connected with the hydrogen engine control system; the interaction method comprises: During operation, the hydrogen supply system obtains the system fault level of the hydrogen supply system, and the hydrogen engine control system obtains the hydrogen leakage fault level; When the hydrogen leakage fault level is greater than or equal to a first preset fault level, the hydrogen engine control system outputs a first control signal to control the hydrogen supply system to stop supplying hydrogen; When the system fault level is greater than or equal to a second preset fault level, the hydrogen supply system outputs a second control signal to control the hydrogen engine to operate with limited torque.

2. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to claim 1, characterized in that: After the hydrogen supply system acquires the system fault level of the hydrogen supply system and the hydrogen engine control system acquires the hydrogen leakage fault level, the method further includes: When the system fault level is greater than or equal to a third preset fault level, the hydrogen supply system stops supplying hydrogen; wherein the third preset fault level is greater than the second preset fault level.

3. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to claim 2, characterized in that: After the hydrogen supply system acquires the system fault level of the hydrogen supply system and the hydrogen engine control system acquires the hydrogen leakage fault level, the method further includes: When the system fault level is less than or equal to a fourth preset fault level, the hydrogen supply system outputs a third control signal to control the normal operation of the hydrogen engine; wherein the fourth preset fault level is lower than the second preset fault level.

4. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to claim 3, characterized in that: When the system fault level is less than the fourth preset fault level, the hydrogen supply system outputs a third control signal to control the normal operation of the hydrogen engine, further comprising: If the system failure includes the remaining hydrogen being less than a preset hydrogen value, the hydrogen supply system sends a low gas volume signal to the hydrogen engine control system; The hydrogen engine control system controls the hydrogen engine to stop after a first preset time delay according to the low gas volume signal.

5. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to any one of claims 1 to 4, characterized in that: After the hydrogen supply system acquires the system fault level of the hydrogen supply system and the hydrogen engine control system acquires the hydrogen leakage fault level, the method further includes: When the hydrogen leakage fault level is greater than or equal to a fifth preset fault level, the hydrogen engine control system controls the hydrogen engine to operate with limited torque; wherein the fifth preset fault level is lower than the first preset fault level.

6. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to claim 5, characterized in that: After the hydrogen supply system acquires the system fault level of the hydrogen supply system and the hydrogen engine control system acquires the hydrogen leakage fault level, the method further includes: When the hydrogen leakage fault level is less than the fifth preset fault level, the hydrogen engine control system acquires the hydrogen rail pressure; When the gas rail pressure is greater than or equal to a first preset pressure and less than or equal to a second preset pressure, the hydrogen engine control system controls the hydrogen engine to operate normally; wherein the first preset pressure is less than the second preset pressure.

7. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to claim 6, characterized in that: After obtaining the hydrogen rail pressure, it also includes: When the gas rail pressure is less than the first preset pressure or greater than the second preset pressure, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen after a delay of a second preset time.

8. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to claim 1, characterized in that: When the hydrogen leakage fault level is greater than or equal to a first preset fault level, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen, including: When the hydrogen leakage fault level is greater than or equal to the first preset fault level, the hydrogen engine control system controls the bottle valve of the hydrogen supply system to close after a delay of a third preset time.

9. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to claim 1, characterized in that: Before the hydrogen supply system acquires the system fault level of the hydrogen supply system and the hydrogen engine control system acquires the hydrogen leakage fault level, the method further includes: Verifying the communication status between the hydrogen supply system and the hydrogen engine control system; When the communication state is abnormal, the hydrogen engine control system controls the hydrogen engine to stop after a delay of a fourth preset time, and the hydrogen supply system stops supplying hydrogen after a delay of a fifth preset time.

10. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to claim 1, characterized in that: When the hydrogen supply system fails and / or the hydrogen leaks, the method further comprises: The hydrogen engine control system outputs an alarm signal.

11. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to claim 1, characterized in that: Also includes: When powered on, the hydrogen engine control system and the hydrogen supply system are powered on according to the start-up instruction; After power-on, the hydrogen engine control system controls the hydrogen supply system to start supplying hydrogen; When the duration of the start instruction is greater than a sixth preset time, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen.

12. The method for interaction between a hydrogen supply system and a hydrogen engine control system according to claim 1, characterized in that: Also includes: When shutting down, the hydrogen engine control system controls the hydrogen supply system to stop supplying hydrogen according to the shutdown instruction; The hydrogen engine control system controls the hydrogen engine to stop and perform purging.

13. An interactive device between a hydrogen supply system and a hydrogen engine control system, characterized in that: The hydrogen supply system is communicatively connected with the hydrogen engine control system; the hydrogen supply system includes a first acquisition module and a first control module, and the hydrogen engine control system includes a second acquisition module and a second control module; the first acquisition module is used to obtain the system fault level of the hydrogen supply system during operation; the second acquisition module is used to obtain the hydrogen leakage fault level during operation; the first control module is used to output a second control signal to control the hydrogen engine to operate with limited torque when the system fault level is greater than or equal to a second preset fault level, and the second control module is used to output a first control signal to control the hydrogen supply system to stop supplying hydrogen when the hydrogen leakage fault level is greater than or equal to the first preset fault level.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for interacting between a hydrogen supply system and a hydrogen engine control system according to any one of claims 1 to 12 when executed.

15. A vehicle, characterized in that: It includes the interactive device between the hydrogen supply system and the hydrogen engine control system as described in claim 13.

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