CN117423857A - Control system and control method of high-capacity hydrogen storage system - Google Patents

Control system and control method of high-capacity hydrogen storage system Download PDF

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Publication number
CN117423857A
CN117423857A CN202311352215.5A CN202311352215A CN117423857A CN 117423857 A CN117423857 A CN 117423857A CN 202311352215 A CN202311352215 A CN 202311352215A CN 117423857 A CN117423857 A CN 117423857A
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China
Prior art keywords
storage system
hydrogen storage
main controller
fault
valve
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CN202311352215.5A
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CN117423857B (en
Inventor
张乐
乐煜
王惠荣
徐毅超
尤成伟
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Shanghai Sunwise Energy System Co ltd
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Shanghai Sunwise Energy System Co ltd
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0432—Temperature; Ambient temperature
    • H01M8/04328—Temperature; Ambient temperature of anode reactants at the inlet or inside the fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0438—Pressure; Ambient pressure; Flow
    • H01M8/04388—Pressure; Ambient pressure; Flow of anode reactants at the inlet or inside the fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0444—Concentration; Density
    • H01M8/04447—Concentration; Density of anode reactants at the inlet or inside the fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04664—Failure or abnormal function
    • H01M8/04671—Failure or abnormal function of the individual fuel cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04955—Shut-off or shut-down of fuel cells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0439—Temperature

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses a control system and a control method of a high-capacity hydrogen storage system, wherein the system comprises the following components: the hydrogen storage system comprises a whole vehicle controller, a hydrogen storage system main controller and a plurality of sub controllers, wherein the main controller is connected with a pressure sensor, a hydrogen concentration sensor and a main valve. The whole vehicle controller is connected with the main controller through an external network CAN interface and is used for sending opening and closing instructions of the bottle valve and the main valve to the main controller and receiving fault alarm signals fed back by the main controller; the main controller is connected with the plurality of sub-controllers through the intranet CAN interface, carries out fault judgment according to the pressure signal, the hydrogen concentration signal and the gas cylinder internal temperature signal and the cylinder valve current signal fed back by the plurality of sub-controllers, and sends a fault alarm signal to the whole vehicle controller when a fault occurs; the sub-controllers are used for monitoring temperature signals and valve current signals in the gas cylinder in real time and sending the temperature signals and the current signals to the main controller. The scheme can reduce the development time and hardware cost of the control system of the high-capacity hydrogen storage system.

Description

Control system and control method of high-capacity hydrogen storage system
Technical Field
The invention relates to the technical field of high-capacity hydrogen storage systems, in particular to a control system and a control method of a high-capacity hydrogen storage system.
Background
Along with the increase of market conservation quantity of hydrogen fuel automobiles in China year by year, the automobile type is expanded from the traditional fields of passenger automobiles and commercial vehicles to the fields of multiple scenes such as mining cards, ships, port and dock transport vehicles, locomotives, fixed power stations and the like, and the demand for a hydrogen storage system with a large volume and multiple bottle groups is also increased.
The controller hardware of the existing hydrogen storage system is mainly compatible with 10 groups of gas cylinders and configurations below, and when more projects requiring the gas cylinders are met, a single controller cannot meet the control requirements of the system. Such as developing new control hardware, the feasibility of both design cost and hardware quality control is low.
Disclosure of Invention
In order to solve the problem that hardware resources of a conventional hydrogen storage system controller cannot meet the requirement of simultaneously controlling a large-capacity multi-bottle-group hydrogen storage system, the scheme provides a control system and a control method of the large-capacity hydrogen storage system, the control of the large-capacity hydrogen storage system is realized through a master-slave control scheme, and the hydrogen storage system controller can be popularized and applied in the field of multiple scenes with lower hardware cost, a more flexible combination scheme and high reliability.
According to an aspect of the present invention, there is provided a control system of a high-capacity hydrogen storage system, comprising: the whole vehicle controller, the hydrogen storage system main controller and the hydrogen storage system sub-controllers are connected with the high pressure sensor, the medium pressure sensor, the hydrogen concentration sensor and the main valve,
the whole vehicle controller is connected with the hydrogen storage system main controller through an external network CAN interface and is used for sending opening and closing instructions of the bottle valve and the main valve to the hydrogen storage system main controller through CAN messages and receiving fault alarm signals fed back by the hydrogen storage system main controller;
the hydrogen storage system main controller is connected with a plurality of hydrogen storage system sub-controllers through an intranet CAN interface, the hydrogen storage system sub-controllers are used for monitoring temperature signals of temperature sensors in the gas cylinders and current signals when the cylinder valves are driven in real time and feeding back to the hydrogen storage system main controller through CAN messages, and the hydrogen storage system main controller carries out fault judgment according to pressure signals of the high pressure sensors and the medium pressure sensors, hydrogen concentration signals of the hydrogen concentration sensors and the temperature signals in the gas cylinders and the current signals of the cylinder valves fed back by the hydrogen storage system sub-controllers;
optionally, in the control system of the high-capacity hydrogen storage system provided by the invention, under the condition that the calculation power of the main controller of the hydrogen storage system CAN not meet the current data calculation amount, the sub-controllers of the hydrogen storage system are suitable for carrying out fault diagnosis on the acquired temperature data and the bottle valve current data to determine the fault bit, and the fault bit is fed back to the main controller of the hydrogen storage system through the intranet CAN message so as to inform the main controller of the hydrogen storage system of triggering the corresponding fault code and the corresponding fault grade.
In the control system of the high-capacity hydrogen storage system provided by the invention, a main controller of the hydrogen storage system is suitable for calculating the residual percentage of hydrogen in real time according to the received temperature data, the bottle valve current data, the high-pressure numerical value of the high-pressure sensor and the medium-pressure numerical values of the plurality of medium-pressure sensors, judging whether a high-pressure gas circuit and a medium-pressure gas circuit are faulty according to the received temperature data, the bottle valve current data, the high-pressure numerical value of the high-pressure sensor, the medium-pressure numerical values of the plurality of medium-pressure sensors and other various data, and triggering corresponding fault codes, fault grades and medium-pressure fault circuit setting messages when faults occur; and feeding back the fault code, the fault grade and the medium-voltage fault path setting signal to the whole vehicle controller in real time through an external network CAN interface.
In the control system of the high-capacity hydrogen storage system provided by the invention, the plurality of hydrogen storage system sub-controllers are suitable for sequentially opening the bottle valves when receiving the bottle valve opening command of the hydrogen storage system main controller, and sequentially closing the bottle valves when receiving the bottle valve closing command of the hydrogen storage system main controller.
In the control system of the high-capacity hydrogen storage system, the main controller of the hydrogen storage system is suitable for driving the corresponding main valve to be opened when receiving the main valve opening instruction sent by the whole vehicle controller and the feedback bottle valves of the multiple sub controllers of the hydrogen storage system are in an open state, and when any main valve is opened, the main controller of the hydrogen storage system enters a hydrogen supply state;
the main controller of the hydrogen storage system is suitable for entering a fault state when the main controller fails in a hydrogen supply state, and in the fault state, the main valve is closed and the opening command of the bottle valve and the opening command of the main valve of the whole vehicle controller are not responded.
In the control system of the high-capacity hydrogen storage system provided by the invention, the main controller of the hydrogen storage system is suitable for closing the main valve and then sending the bottle valve closing instruction to the sub-controller of the hydrogen storage system through the intranet CAN interface when receiving the main valve closing instruction and the bottle valve closing instruction of the whole vehicle controller under the normal hydrogen supply state.
In the control system of the high-capacity hydrogen storage system, provided by the invention, a replacement interface is reserved between a main hydrogen storage system controller and a plurality of sub-hydrogen storage system controllers, and when the replacement interface is grounded, the main hydrogen storage system controller and the sub-hydrogen storage system controllers enter a replacement mode, and a bottle valve and a main valve which are respectively controlled are forcedly opened.
In the control system of the high-capacity hydrogen storage system provided by the invention, the high-capacity hydrogen storage system controlled by the control system is used for supplying hydrogen to a plurality of fuel cell systems, and the high-capacity hydrogen storage system is correspondingly matched with a plurality of pressure reducing valves, medium-pressure sensors and main valves; the cylinder valves of each gas cylinder are connected to form a unified high-pressure gas path, and the high-pressure gas path is depressurized by the corresponding depressurization valve to form a plurality of medium-pressure branches; the hydrogen storage system main controller is suitable for controlling the opening of a main valve arranged on each medium-pressure branch to output hydrogen to the corresponding fuel cell system.
In the control system of the high-capacity hydrogen storage system provided by the invention, the main controller of the hydrogen storage system is suitable for setting the setting signal of the medium-voltage fault path to be 1 when a certain medium-voltage branch is in fault, and informing the whole vehicle controller to independently control the normal shutdown or the prohibition of the starting of the fuel cell system corresponding to the faulty medium-voltage branch.
According to another aspect of the present invention, there is provided a control method of a high-capacity hydrogen storage system, the method comprising:
the whole vehicle controller sends opening instructions of the bottle valve and the main valve to the main controller of the hydrogen storage system through the CAN message, and performs corresponding operation according to a fault alarm signal fed back by the main controller of the hydrogen storage system;
the hydrogen storage system main controller sends a bottle valve opening instruction to the hydrogen storage system sub-controllers through the CAN message, and carries out fault judgment on temperature signals and bottle valve current signals fed back by the hydrogen storage system sub-controllers, and sends a fault alarm signal to the whole vehicle controller when faults occur;
the multiple hydrogen storage system sub-controllers receive instructions of the hydrogen storage system main controller through the CAN message, drive respective cylinder valves, and send real-time temperature signals and cylinder valve driving currents in the monitored cylinders to the hydrogen storage system main controller; the method is also suitable for carrying out fault diagnosis on the read temperature and the read current of the cylinder valve, and when faults occur, the main controller of the hydrogen storage system is informed to trigger fault codes and fault grade processing of corresponding faults through the CAN message.
According to the scheme of the invention, the plurality of hydrogen storage system sub-controllers collect the temperature data and the bottle valve current data of the large-capacity multi-bottle group, the plurality of hydrogen storage system sub-controllers can perform fault judgment according to the temperature data and the bottle valve current data, and trigger the corresponding fault position, so that the computational load of the hydrogen storage system main controller can be reduced, the hardware development cost of the large-capacity hydrogen storage system project is reduced, and the flexibility of multi-scene application of the large-capacity hydrogen storage project is improved.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 illustrates a controller diagnostic rights assignment contrast diagram in accordance with one embodiment of the invention;
FIG. 2 illustrates a schematic diagram of the control system electrical principle of a high capacity hydrogen storage system according to one embodiment of the present invention;
FIG. 3 illustrates a schematic diagram of a hydrogen storage system master controller control flow in accordance with one embodiment of the present invention;
FIG. 4 illustrates a schematic diagram of the connection of gas circuit components of a hydrogen storage system in accordance with one embodiment of the present invention;
FIG. 5 illustrates a hydrogen storage system expansion control schematic according to one embodiment of the present invention;
fig. 6 shows a CAN signal data flow diagram according to one embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to solve the problem that hardware resources of a conventional hydrogen storage system controller cannot meet the hardware requirements of simultaneously controlling a plurality of bottle group valves and various sensors, the scheme provides a control system and a control method of a high-capacity hydrogen storage system, the high-capacity hydrogen storage system is flexibly controlled through a master-slave control scheme, and popularization and application in the field of multiple scenes of a hydrogen fuel system can be realized with low hardware cost, flexibility and high reliability.
The control system of the high-capacity hydrogen storage system provided by the invention comprises: the hydrogen storage system comprises a whole vehicle controller, a hydrogen storage system main controller and a plurality of hydrogen storage system sub-controllers, wherein the hydrogen storage system main controller is connected with a high pressure sensor (the number is generally 1-2), a medium pressure sensor (the number is generally 1-4), a hydrogen concentration sensor (the number is generally 1-6) and a main valve.
The whole vehicle controller is connected with the hydrogen storage system main controller through an external network CAN interface and is used for sending opening and closing instructions of the bottle valve and the main valve to the hydrogen storage system main controller through CAN messages and receiving fault alarm signals fed back by the hydrogen storage system main controller.
The hydrogen storage system main controller is connected with the hydrogen storage system sub-controllers through an intranet CAN interface, the hydrogen storage system sub-controllers are used for monitoring temperature signals of temperature sensors in the gas cylinders and current signals when the cylinder valves are driven in real time, and feeding back the temperature signals to the hydrogen storage system main controller through CAN messages, and the hydrogen storage system main controller carries out fault judgment according to pressure signals of the high pressure sensors and the medium pressure sensors, hydrogen concentration signals of the hydrogen concentration sensors and the temperature signals in the gas cylinders and the current signals of the cylinder valves fed back by the hydrogen storage system sub-controllers.
Specifically, the main controller of the hydrogen storage system is suitable for calculating the residual percentage of hydrogen in real time according to the received temperature data, the bottle valve current data, the high pressure value of the high pressure sensor and the medium pressure values of the plurality of medium pressure sensors; judging whether the high-voltage gas circuit and the medium-voltage gas circuit are faulty according to the received various data, and triggering corresponding fault codes, fault grades and medium-voltage fault circuit setting signals when faults occur; and feeding back the fault code, the fault grade and the medium-voltage fault path setting signal to the whole vehicle controller in real time through an external network CAN interface.
Because the hardware computing power of the hydrogen storage system main controller is limited, the more the number of gas cylinders, the more data the hydrogen storage system main controller needs to compute and process. When the data calculation and processing amount reaches the calculation force boundary of the main controller of the hydrogen storage system, the main controller of the hydrogen storage system can not complete the calculation flow of all data in one calculation period, so that obvious period deviation occurs to the outgoing message signal.
Therefore, the scheme CAN directly read the temperature of the gas cylinder and the current of the cylinder valve by the plurality of hydrogen storage system sub-controllers, and the hydrogen storage system sub-controllers are suitable for carrying out fault diagnosis on the acquired temperature data and the current data of the cylinder valve to determine fault positions under the condition that the calculation power of the hydrogen storage system main controller cannot meet the current data calculation power, and the fault positions are fed back to the hydrogen storage system main controller through an intranet CAN message so as to inform the hydrogen storage system main controller of triggering the corresponding fault codes and the corresponding fault grades. This reduces the computational load on the hydrogen storage system master controller.
FIG. 1 illustrates a controller diagnostic rights assignment versus schematic diagram in accordance with one embodiment of the invention. As shown in fig. 1, in the case where the hardware computing power of the hms_m is sufficient, software design is generally performed using the upper-side flow of fig. 1. The hydrogen storage system sub-controller HMS_J1 feeds back the acquired temperature data and the bottle valve current data to the main control HMS_M through an intranet CAN message, the HMS_M performs unified temperature numerical analysis, temperature sensor fault diagnosis, temperature overrun fault diagnosis and bottle valve fault diagnosis, and if faults exist, the corresponding fault codes and fault grades are triggered, and the fault codes and the fault grades are sent to the VCU through the VCAN message.
The design and expansion workload of the hydrogen storage system subcontroller software is small, and the hydrogen storage system subcontroller software is convenient for personnel to apply and develop between hydrogen system projects with different configurations.
However, since the chip configurations of the various controllers in the market are different, and the calculation power of the main control chip of the controller is limited, the flow scheme at the lower side of fig. 1 can be adopted for design under the condition that the calculation power of the controller cannot meet the requirement of a large amount of data calculation.
And (3) the diagnosis authority is lowered to each hydrogen storage system sub-controller, and each hydrogen storage system sub-controller diagnoses corresponding temperature data and bottle valve current data which are responsible for monitoring, wherein the diagnosis processes are the same. A set of interaction logic is newly defined in an interaction message between a main controller of the hydrogen storage system and a sub-controller of the hydrogen storage system.
For example, a specific fault is set to correspond to a fault bit, the fault bit defaults to a fault-free state to send 0 and sends 1 when a fault occurs, so that the main controller of the hydrogen storage system is informed to trigger a corresponding fault code and a fault grade, and the operation load of the main controller of the hydrogen storage system can be greatly reduced.
Fig. 2 shows a schematic diagram of the electrical principle of the control system of the high-capacity hydrogen storage system according to one embodiment of the present invention. As shown in fig. 2, the control system includes a vehicle control unit VCU, a hydrogen storage system main controller hms_m, and a plurality of hydrogen storage system sub-controllers hms_j (hms_j1 and hms_j2).
The main controller HMS_M of the hydrogen storage system is connected with the high pressure sensor, the 2 medium pressure sensors, the hydrogen concentration sensor and the main valve. Two hydrogen storage system sub-controllers HMS_J1 and HMS_J2 are adopted to respectively connect the bottle valves 1-10 and the bottle valves 11-20.
The whole Vehicle Controller (VCU) is used for supplying power to the main hydrogen storage system controller and the sub hydrogen storage system controllers, so that the HMS_ M, HMS _J1 and the HMS_J2 are awakened from a dormant state to work normally.
HMS_M communicates with VCU through CAN interface of external network (VCAN, refer to two communication lines VCANL, VCANH in the figure); meanwhile, the communication interaction between the HMS_J1 and the HMS_J2 is realized through an intranet CAN interface (FCAN, which refers to two communication lines of FCANL and FCANH in the figure).
HMS_ M, HMS _J1 and HMS_J2 are reserved with replacement interfaces, when the replacement interfaces are communicated with the ground wire, the replacement interfaces are in a replacement mode, the bottle valve and the main valve which are controlled by the replacement interfaces are forced to be opened, and engineering personnel can use the replacement modes to carry out maintenance work such as debugging, hydrogen replacement and the like more conveniently.
The plurality of hydrogen storage system sub-controllers are adapted to sequentially open the bottle valves upon receiving a bottle valve opening command of the hydrogen storage system main controller, and sequentially close the bottle valves upon receiving a bottle valve closing command of the hydrogen storage system main controller.
When the main controller of the hydrogen storage system receives a main valve opening instruction sent by the whole vehicle controller and the feedback bottle valves of the multiple sub controllers of the hydrogen storage system are in an opening state, the corresponding main valve is driven to be opened, and when any main valve is opened, the main controller of the hydrogen storage system enters a hydrogen supply state.
The main controller of the hydrogen storage system is suitable for entering a fault state when the main controller fails in a hydrogen supply state, and in the fault state, the main valve is closed and the opening command of the bottle valve and the opening command of the main valve of the whole vehicle controller are not responded. When a main valve closing instruction and a bottle valve closing instruction of the whole vehicle controller are received in a normal hydrogen supply state, the main valve is closed first, and then the bottle valve closing instruction is sent to a hydrogen storage system sub-controller through an intranet CAN interface.
Fig. 3 shows a schematic diagram of a control flow of a hydrogen storage system main controller of the hydrogen storage system according to one embodiment of the invention. As shown in fig. 3, after the main controller of the hydrogen storage system is powered on, step S101 is executed first, under the normal condition of power supply, the hms_m is awakened to perform a Self-checking process, the hydrogen system status value is reported to Self-Check, whether the signal feedback values of the sensors and the bottle valve components are within the defined interval range is confirmed, and whether the communication between the intranet CAN and the sub-controls hms_j1 and hms_j2 is normal is confirmed. And after the self-checking flow is finished, default entering an automatic mode.
S102, monitoring whether faults exist at any time in an automatic mode, if not, keeping the HMS_M in standby, and sending a Ready state value; if a serious fault exists, the HMS enters a fault state, and the state value sends Error.
And S103, in the HMS_M standby state, the bottle valve command sent by the VCU is received as the opening, and the sub-control bottle valve opening command is sent through the intranet CAN to inform the HMS_J1 and HMS_J2 of opening the bottle valves.
P101, after the HMS_J1 and the HMS_J2 are awakened, message information is interacted with the HMS_M in real time through the intranet CAN, and the temperature value and the bottle valve state of each bottle valve are sent to the HMS_M. After confirming that the bottle valve command of the hms_m is on, the hms_j1 and the hms_j2 sequentially open the bottle valves. After confirming that the bottle valve command of the hms_m is switched from open to closed, the hms_j1 and hms_j2 sequentially close the bottle valves.
S104, after the HMS_M confirms that the bottle valve is in an open state through the intranet CAN, if the main valve instruction of the VCU is received to be open, the corresponding main valve is opened, and in the example, two main valves are used, so that the two main valve instructions exist. When any main valve is opened, the HMS_M enters a hydrogen supply state, and the state value sends Work.
S105, if serious faults occur in the HMS_M hydrogen supply state, the HMS_M hydrogen supply state enters a fault state, a state value is fed back to Error, the main valve is kept closed, the internal network CAN keeps sending a sub-bottle control valve command to be closed, the bottle valve opening command and the main valve opening command sent by the VCU are not responded any more, and the fault state is maintained before the fault is eliminated.
S106, if the hydrogen supply state of the HMS_M is normal, the VCU sends a main valve closing instruction and a bottle valve closing instruction until receiving. The HMS_M firstly closes the main valve, and then sends a sub-control bottle valve command to be closed through the intranet CAN. After all the bottle valves are confirmed to be closed, the HMS_M exits the hydrogen supply state and returns to the automatic mode judgment to complete one working cycle.
Special projects generally require a plurality of fuel cell systems (hereinafter referred to as fuel cell systems) in addition to a hydrogen storage system requiring a large hydrogen storage amount to provide high-power peak generated power, the fuel cell systems correspondingly matching a plurality of pressure reducing valves, a medium-pressure sensor and a main valve; the cylinder valve of each gas cylinder is connected to form a high-pressure gas path, and the high-pressure gas path is formed into a plurality of medium-pressure branches through a pressure reducing valve; the hydrogen storage system main controller is suitable for controlling the opening of the main valve to output hydrogen to the corresponding fuel cell system.
In one embodiment of the invention, two fuel cell systems are adopted, each fuel cell system needs one air inlet, and two pressure reducing valves, two medium pressure sensors and two main valves are correspondingly matched.
FIG. 4 illustrates a schematic diagram of the connection of the gas circuit components of the hydrogen storage system according to one embodiment of the invention. As shown in FIG. 4, HMS_J1 and HMS_J2 control gas cylinders 1-10 and 11-20 respectively, and the cylinder valves of each gas cylinder are connected to form a high-pressure gas path, and a high-pressure sensor is arranged on the high-pressure gas path.
The high-pressure gas path is divided into two paths, namely a medium-pressure branch 1 and a medium-pressure branch 2 through a pressure reducing valve No. 1 and a pressure reducing valve No. 2, and the main valve is controlled to be opened by the HMS_M and is output to the corresponding fuel cell system 1 and the corresponding fuel cell system 2.
The conventional hydrogen storage system failure determination is set to 3 levels as follows:
grade 1 failed slightly and was not handled.
The 2-stage middle-stage fault can be not processed or can be contracted with a manufacturer of the fuel cell system to ensure that the longest valve opening time is ensured, for example, 300s valve opening can be ensured at the longest under the condition of setting 2-stage faults, and when the 2-stage faults exist and last 300s, the HMS_M is required to forcedly close the bottle valve, and the valve opening instruction is not responded before the faults are eliminated.
The 3-stage catastrophic failure is typically handled by immediately closing all of the cylinder valves and the main valve or delaying the 2-5s closure.
Compared with the conventional hydrogen storage system, the fault judgment of the hydrogen storage system of the double medium pressure gas circuit design needs to be distinguished aiming at the related faults of the single medium pressure gas circuit. The hydrogen storage system main controller is suitable for setting a medium voltage fault path setting signal to be 1 when a certain medium voltage branch circuit fails, and informing the whole vehicle controller to independently control the normal shutdown of the fuel cell system or inhibit the startup of the fuel cell system.
Specifically, when an abnormality exists in a single medium-voltage branch, the medium-voltage branch fault is defined as a 1-level fault, a corresponding fault trigger signal is set, the set signal of the medium-voltage fault is sent to 0 by default, and 1 is sent when the medium-voltage branch fault occurs.
For example, when it is detected that the medium pressure value of the medium pressure branch 1 is too high or too low, or that an abnormality exists in the corresponding main valve, the normal operation of the fuel cell system 1 is affected. At this time, the high-pressure gas path has no fault and the medium-pressure branch 2 can normally supply hydrogen. The hms_m notifies the VCU of the above-described set signal to individually control the normal shutdown of the fuel cell system 1 (in operation of the fuel cell system 1) or to prohibit the startup of the fuel cell system 1 (when the fuel cell system 1 is not started).
Similarly, when the medium-voltage branch circuit 2 is abnormal, the process is also carried out according to the flow.
Fig. 5 shows a schematic diagram of the expansion control of the hydrogen storage system according to an embodiment of the present invention. As shown in fig. 5, the hms_m is mainly responsible for wiring of the high pressure sensor, the medium pressure sensor, the hydrogen concentration sensor and the main valve, and the hms_jx can be connected with a fixed number of bottle valves according to hardware pin resources, and all the hms_jx are communicated with the hard wire replacement interface of the hms_m, so that the personnel can perform maintenance operation uniformly.
In the case that the hardware resources of the hms_m are sufficient, the control scheme of the present invention can be extended continuously in theory, but is limited by the practical hardware pin resources, and in some cases, a medium pressure sensor which cannot be monitored by the hms_m can be allocated to the hms_jx to monitor and forward through the intranet. The special hms_jx needs to send the medium voltage value responsible for monitoring to the hms_m through an intranet CAN defined communication protocol.
Fig. 6 shows a CAN signal data flow diagram according to one embodiment of the invention. As shown in fig. 6, when the hms_m receives the bottle valve control command sent by the VCU, the hms_m switches from closed to open in the hydrogen storage system subcontroller bottle valve control command sent by the FCAN. After the HMS_J1 and the HMS_J2 receive the instruction, the valves 1-10 and 11-20 are opened in sequence, and the valve current is monitored.
Meanwhile, the temperature sensor is integrated in the cylinder valve, the temperature value of each gas cylinder can be monitored in real time through the HMS_J1 and the HMS_J2, and the temperature value and the cylinder valve current value are sent to the HMS_M in real time through the FCAN.
When the HMS_M receives a main valve control command sent by the VCU and is switched from closed to open, and the HMS_J1 and the HMS_J2 feed back that the bottle valve is in an open state, the HMS_M drives the main valve corresponding to the command and starts to formally supply hydrogen.
The HMS_M analyzes the temperature value and the bottle valve current value received by the FCAN, and in combination with the high-pressure value fed back by the high-pressure sensor and the two medium-pressure values fed back by the two medium-pressure sensors, diagnoses the high-pressure gas path fault and the medium-pressure gas path fault in real time, and calculates the residual percentage SOC of the hydrogen.
When faults occur, corresponding fault codes, fault grades and medium-voltage fault path setting signals are triggered, and fed back to the VCU on the VCAN in real time. If the single-channel medium pressure has a fault, the VCU can switch the control instruction of the main valve corresponding to the medium-pressure gas channel, and only the main valve installed in the section of fault medium-pressure gas channel is closed for load reduction operation.
According to the control scheme of the high-capacity hydrogen storage system, the plurality of hydrogen storage system sub-controllers collect the temperature data and the bottle valve current data of the high-capacity multi-bottle group, the plurality of hydrogen storage system sub-controllers can perform fault judgment according to the temperature data and the bottle valve current data, corresponding fault positions are triggered, the calculation load of the main controller of the hydrogen storage system can be reduced, the hardware development cost of the high-capacity hydrogen storage system project is reduced, and the flexibility of multi-scene application of the high-capacity hydrogen storage project is improved.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules or units or components of the devices in the examples disclosed herein may be arranged in a device as described in this embodiment, or alternatively may be located in one or more devices different from the devices in this example. The modules in the foregoing examples may be combined into one module or may be further divided into a plurality of sub-modules.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.
Furthermore, some of the embodiments are described herein as methods or combinations of method elements that may be implemented by a processor of a computer system or by other means for performing the functions. Thus, a processor with the necessary instructions for implementing a method or a method element forms a means for implementing the method or the method element. Further, the elements herein of the apparatus embodiments are examples of the following apparatuses: the apparatus is for carrying out the functions performed by the elements for carrying out the objects of the invention.
As used herein, unless otherwise specified the use of the ordinal terms "first," "second," "third," etc., to describe a general object merely denote different instances of like objects, and are not intended to imply that the objects so described must have a given order, either temporally, spatially, in ranking, or in any other manner.
While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of the above description, will appreciate that other embodiments are contemplated within the scope of the invention as described herein. Furthermore, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The disclosure of the present invention is intended to be illustrative, but not limiting, of the scope of the invention, which is defined by the appended claims.

Claims (10)

1. A control system for a high capacity hydrogen storage system, comprising: the hydrogen storage system main controller is connected with a high pressure sensor, a medium pressure sensor, a hydrogen concentration sensor and a main valve,
the whole vehicle controller is connected with the hydrogen storage system main controller through an external network CAN interface, and is used for sending opening and closing instructions of a bottle valve and a main valve to the hydrogen storage system main controller through a CAN message and receiving a fault alarm signal fed back by the hydrogen storage system main controller;
the hydrogen storage system main controller is connected with a plurality of hydrogen storage system sub-controllers through an intranet CAN interface, and carries out fault judgment according to pressure signals of the high pressure sensor and the medium pressure sensor, hydrogen concentration signals of the hydrogen concentration sensor, and gas cylinder internal temperature signals and cylinder valve current signals fed back by the plurality of hydrogen storage system sub-controllers, and when faults occur, fault alarm signals are sent to the whole vehicle controller through CAN messages;
the hydrogen storage system sub-controllers are used for monitoring temperature signals of the temperature sensor inside the gas cylinder and current signals when the cylinder valve is driven in real time, and sending the temperature signals and the current signals to the hydrogen storage system main controller through the CAN message.
2. The control system of a high capacity hydrogen storage system of claim 1, wherein the hydrogen storage system main controller is adapted to calculate the hydrogen remaining percentage in real time based on the received temperature data, the cylinder valve current data, and the high pressure value of the high pressure sensor, the medium pressure values of the plurality of medium pressure sensors; judging whether the high-voltage gas circuit and the medium-voltage gas circuit are faulty according to the received data, and triggering corresponding fault codes, fault grades and medium-voltage fault circuit setting signals when faults occur; and feeding back the fault code, the fault grade and the medium-voltage fault path setting signal to the whole vehicle controller in real time through an external network CAN interface.
3. The control system of a high capacity hydrogen storage system according to claim 2, wherein in case that the calculation power of the main controller of the hydrogen storage system cannot meet the current data calculation power, the sub-controllers of the hydrogen storage system are adapted to perform fault diagnosis on the collected temperature data and the bottle valve current data to determine fault bits, and the fault bits are fed back to the main controller of the hydrogen storage system through the CAN message to inform the main controller of the hydrogen storage system to trigger the corresponding fault codes and the fault levels.
4. The control system of a high capacity hydrogen storage system of claim 1, wherein the plurality of hydrogen storage system sub-controllers are adapted to sequentially open the bottle valves upon receipt of a bottle valve opening command from the hydrogen storage system main controller and sequentially close the bottle valves upon receipt of a bottle valve closing command from the hydrogen storage system main controller.
5. The control system of a high capacity hydrogen storage system according to claim 1, wherein the hydrogen storage system main controller is adapted to drive the corresponding main valve to open when receiving a main valve opening command sent by the whole vehicle controller and when the feedback bottle valves of the plurality of hydrogen storage system sub-controllers are in an open state, and when any main valve is opened, the hydrogen storage system main controller enters a hydrogen supply state;
the main controller of the hydrogen storage system is suitable for entering a fault state when the main controller fails in a hydrogen supply state, and in the fault state, the main valve is closed and the opening command of the bottle valve and the opening command of the main valve of the whole vehicle controller are not responded.
6. The control system of a high capacity hydrogen storage system of claim 5, wherein the hydrogen storage system main controller is adapted to close the main valve and send a bottle valve closing command to the hydrogen storage system sub-controller via the intranet CAN interface when receiving the main valve closing command and the bottle valve closing command of the whole vehicle controller in a normal hydrogen supply state.
7. The control system of a high capacity hydrogen storage system of claim 1, wherein the hydrogen storage system main controller and the plurality of hydrogen storage system sub-controllers reserve a replacement interface, and when the replacement interface is grounded, the hydrogen storage system main controller and the plurality of hydrogen storage system sub-controllers enter a replacement mode to forcibly open the respective controlled cylinder valve and main valve.
8. The control system of a high-capacity hydrogen storage system according to claim 1, wherein the high-capacity hydrogen storage system is suitable for supplying hydrogen to a plurality of fuel cell systems, the high-capacity hydrogen storage system is correspondingly matched with a plurality of pressure reducing valves, a medium pressure sensor and a main valve, the cylinder valves of each gas cylinder are connected to form a uniform high-pressure gas path, and the high-pressure gas path is reduced in pressure through the corresponding pressure reducing valves to form a plurality of medium pressure branches; the hydrogen storage system main controller is suitable for controlling the opening of a main valve arranged on each medium-pressure branch to output hydrogen to the corresponding fuel cell system.
9. The control system of a high capacity hydrogen storage system according to claim 8, wherein the hydrogen storage system main controller is adapted to set a medium voltage fault path setting signal to 1 when a certain medium voltage branch fails, and inform the whole vehicle controller to individually control the normal shutdown or inhibit the startup of the fuel cell system corresponding to the failed medium voltage branch.
10. A control method of a high-capacity hydrogen storage system, characterized by comprising:
the whole vehicle controller sends opening instructions of the bottle valve and the main valve to the main controller of the hydrogen storage system through the CAN message, and performs corresponding operation according to a fault alarm signal fed back by the main controller of the hydrogen storage system;
the hydrogen storage system main controller sends a bottle valve opening instruction to the hydrogen storage system sub-controllers through the CAN message, and carries out fault judgment on temperature signals and bottle valve current signals fed back by the hydrogen storage system sub-controllers, and when faults occur, a fault alarm signal is sent to the whole vehicle controller;
the plurality of hydrogen storage system sub-controllers receive the instruction of the hydrogen storage system main controller through the CAN message, drive the respective cylinder valves, and send the monitored real-time temperature signal in the gas cylinder and the cylinder valve driving current to the hydrogen storage system main controller; the method is also suitable for carrying out fault diagnosis on the read temperature and the read current of the cylinder valve, and when faults occur, the main controller of the hydrogen storage system is informed to trigger fault codes and fault grade processing of corresponding faults through the CAN message.
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