CN111993955A - Fuel cell system control method and device and vehicle - Google Patents

Fuel cell system control method and device and vehicle Download PDF

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Publication number
CN111993955A
CN111993955A CN202010699991.2A CN202010699991A CN111993955A CN 111993955 A CN111993955 A CN 111993955A CN 202010699991 A CN202010699991 A CN 202010699991A CN 111993955 A CN111993955 A CN 111993955A
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fuel cell
vehicle
cell system
power
road condition
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CN111993955B (en
Inventor
魏长河
秦志东
王超
李丹
宋祎博
张文辉
曲迪
周恩飞
王枫
魏文博
高武
王慧
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
    • 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
    • B60L50/75—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using propulsion power supplied by both fuel cells and batteries
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
    • B60L58/31—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for starting of fuel cells
    • 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
    • H01M8/04111—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
    • 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
    • H01M8/04746—Pressure; Flow
    • H01M8/04753—Pressure; Flow of fuel cell 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
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04992—Processes for controlling fuel cells or fuel cell systems characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electrochemistry (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Power Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Health & Medical Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Computing Systems (AREA)
  • Evolutionary Computation (AREA)
  • Fuzzy Systems (AREA)
  • Medical Informatics (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Fuel Cell (AREA)

Abstract

The invention provides a fuel cell system control method and device, a storage medium, electronic equipment and a vehicle, which are applied to a vehicle control unit of the vehicle, wherein the vehicle control unit is communicated with a server, the vehicle comprises a fuel cell system, an air compressor of the fuel cell system is connected with a branch pipeline, and a branch flow control valve is arranged on the branch pipeline. The invention can start the air compressor in advance to prepare for the larger power demand, thereby avoiding the problem that the fuel cell system can not respond to the larger power demand immediately; meanwhile, the branch flow control valve is used for controlling the branch pipeline to release the excess air pressed by the air compressor, so that the fuel cell system can output power according to the actual required power of the vehicle.

Description

Fuel cell system control method and device and vehicle
Technical Field
The invention relates to the technical field of automobiles, in particular to a fuel cell system control method and device and a vehicle.
Background
In recent years, fuel cell vehicles have been rapidly developed due to the characteristics of clean fuel and no emission of polluting exhaust gases.
Currently, in the control mode of the fuel cell system, a driver needs to step on an accelerator pedal to make a power request for a motor, and then the fuel cell outputs corresponding power according to the power request. According to the control mode, corresponding action is started after the whole vehicle sends a power demand, so that when the fuel cell has a rapid power demand, the speed of the whole vehicle is slow to promote and respond due to the fact that the pressure in a fuel cell stack cavity and the flow of gas fuel cannot be rapidly promoted and the output power of the matched power cell system is too small, the acceleration demand of the whole vehicle cannot be timely met, the comfort and the dynamic property of the whole vehicle are reduced, and the driving experience of a user is influenced.
For the problem of slow power response speed of a fuel cell system, a common practice is to mix a fuel cell and a high-energy power cell to quickly compensate the power required by the entire vehicle by using the power cell, but the above-mentioned manner of using the fuel cell and the high-energy power cell results in that the power carrying capacity of a fuel cell vehicle is similar to that of a pure electric vehicle, and the entire vehicle cost is high.
Disclosure of Invention
In view of the above, the present invention is directed to a method and an apparatus for controlling a fuel cell system, and a vehicle, so as to solve the problem of slow power response speed of the fuel cell system in the existing fuel cell system control technology.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a control method of a fuel cell system is applied to a vehicle controller of a vehicle, the vehicle controller is communicated with a server, the vehicle comprises the fuel cell system, an air compressor of the fuel cell system is connected with a branch pipeline, a branch flow control valve is arranged on the branch pipeline, and the method comprises the following steps:
receiving road condition parameter information of a road section to be driven, which is sent by the server;
determining actual power and vehicle condition information of the vehicle;
determining the required power of the vehicle according to the vehicle condition information and the road condition parameter information;
controlling an air compressor of the fuel cell system to work according to the larger value of the actual power and the required power;
and adjusting the opening degree of the branch flow control valve according to the actual power, and controlling the work of a cathode pressure regulator of the fuel cell system so that the fuel cell system outputs electric energy according to the actual power.
Optionally, in the fuel cell system control method, the vehicle includes an electric motor electrically connected to the fuel cell system, and the controlling an operation of an air compressor of the fuel cell system according to a larger value of the actual power and the required power includes:
predicting the required current of the motor according to the larger value of the actual power and the required power;
determining theoretical oxygen flow and theoretical hydrogen flow according to the required current;
determining the excess oxygen flow according to the theoretical hydrogen flow;
determining the total flow of oxygen according to the theoretical oxygen flow and the excess oxygen flow;
and controlling the air compressor to work according to the total flow of the oxygen.
Optionally, in the fuel cell system control method, the vehicle further includes a power cell electrically connected to the fuel cell system, and the method further includes:
and when the output power of the fuel cell system is greater than the actual power, controlling the fuel cell system to charge the power cell according to the difference value between the output power and the actual power.
Optionally, in the fuel cell system control method, the predicting the required power of the vehicle according to the vehicle condition information and the road condition parameter information includes:
determining the required power according to the road condition information and the vehicle condition information under the condition that the road condition parameter information comprises the road condition information;
determining the required power according to the basic power data under the condition that the road condition parameter information comprises basic power data; and the basic power data is historical maximum power data of the vehicle aiming at the road condition information.
Another object of the present invention is to provide a fuel cell system control apparatus, which is applied to a vehicle controller of a vehicle, the vehicle controller communicating with a server, the vehicle including a fuel cell system, an air compressor, a cathode and an exhaust gas discharge end of the fuel cell system being sequentially connected by a main pipeline, the air compressor being further connected to the exhaust gas discharge end by a branch pipeline, the branch pipeline being provided with a branch flow control valve, and the main pipeline between the cathode and the exhaust gas discharge end being provided with a cathode pressure regulator, the apparatus including:
the receiving module is used for receiving the road condition parameter information of the road section to be driven, which is sent by the server;
the determining module is used for determining the actual power and the vehicle condition information of the vehicle;
the prediction module is used for predicting the required power of the vehicle according to the vehicle condition information and the road condition parameter information;
the first control module is used for controlling an air compressor of the fuel cell system to work according to the larger value of the actual power and the required power;
and the second control module is used for adjusting the opening of the branch flow control valve according to the actual power and controlling the work of the cathode pressure regulator so that the fuel cell system outputs electric energy according to the actual power.
Optionally, in the fuel cell system control apparatus, the vehicle includes a motor electrically connected to the fuel cell system, and the first control module includes:
the prediction unit is used for predicting the required current of the motor according to the larger value of the actual power and the required power;
the first determining unit is used for determining theoretical oxygen flow and theoretical hydrogen flow according to the required current;
a second determination unit for determining an excess oxygen flow rate based on the theoretical hydrogen flow rate;
a third determining unit, configured to determine a total oxygen flow rate according to the theoretical oxygen flow rate and the excess oxygen flow rate;
and the control unit is used for controlling the work of the air compressor according to the total flow of the oxygen.
Optionally, in the fuel cell system control apparatus, the vehicle further includes a power battery electrically connected to the fuel cell system;
the control module is further configured to control the fuel cell system to charge the power battery according to a difference between the output power and the actual power when the output power of the fuel cell system is greater than the actual power.
Alternatively, in the fuel cell system control device, the prediction module may include:
a fourth determining unit, configured to determine the required power according to the road condition information and the vehicle condition information when the road condition parameter information includes road condition information;
a fifth determining unit, configured to determine the required power according to the basic power data when the road condition parameter information includes the basic power data; and the basic power data is historical maximum power data of the vehicle aiming at the road condition information.
Compared with the prior art, the fuel cell system control method and the device have the following advantages:
an air compressor of the fuel cell system is connected with a branch pipeline, and a branch flow control valve is arranged on the branch pipeline; when receiving road condition parameter information of a road section to be driven sent by a server, determining actual power and vehicle condition information of a vehicle, predicting required power of the vehicle according to the vehicle condition information and the road condition parameter information, controlling an air compressor of the fuel cell system to work according to the larger value of the actual power and the required power, adjusting the opening degree of a branch flow control valve according to the actual power, and controlling a cathode pressure regulator of the fuel cell system to work so that the fuel cell system outputs electric energy according to the actual power. Because the predicted required power of the vehicle is predicted according to the road condition data in front of the vehicle, the air compressor can be started in advance to prepare for the larger power demand when the vehicle is predicted to have the larger power demand, and the problem that a fuel cell system cannot respond to the larger power demand in real time is avoided; meanwhile, the fuel cell system controls the branch pipeline to release the excess air pressed by the air compressor through the branch flow control valve, so that the fuel cell system can output power according to the actual required power of the vehicle.
It is a further object of the present invention to provide a storage medium having a plurality of instructions stored thereon, wherein the instructions are adapted to be loaded by a processor and to perform the fuel cell system control method as described above.
It is still another object of the present invention to provide an electronic device, which includes:
a processor adapted to implement instructions; and
a storage medium adapted to store a plurality of instructions adapted to be loaded by a processor and to perform the fuel cell system control method as described above.
It is a further object of the present invention to propose a vehicle including the fuel cell system control apparatus as described above.
The storage medium, the electronic device and the vehicle have the same advantages as the fuel cell system control method and the fuel cell system control device in comparison with the prior art, and are not repeated herein.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart of a fuel cell system control method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fuel cell system according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating that a server sends road condition parameter information of a road section to be traveled to a vehicle-mounted communication terminal in real time according to an embodiment of the present invention;
FIG. 4 is a table showing the correspondence between air pressure and flow rate of a fuel cell system and power of the fuel cell system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a control strategy for a fuel cell system according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating an implementation of a fuel cell system control method according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a fuel cell system according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1, a schematic flow chart of a control method of a fuel cell system according to an embodiment of the present invention is shown, and is applied to a parking controller of a vehicle, where the vehicle controller communicates with a server, the vehicle includes a fuel cell system, an air compressor, a cathode, and a tail gas discharge end of the fuel cell system are sequentially connected by a main pipeline, the air compressor is further connected with the tail gas discharge end by a branch pipeline, the branch pipeline is provided with a branch flow control valve, and the main pipeline between the cathode and the tail gas discharge end is provided with a cathode pressure regulator, where the method includes steps S100 to S500.
In the embodiment of the invention, the air compressor is not only connected with the cathode of the fuel cell system and the tail gas discharge end in sequence through the main pipeline, but also connected with the tail gas discharge end through the branch pipeline, and the branch pipeline is provided with the first flow controller, and the surplus air which meets the requirements of the fuel cell stack in the air compressor can be conveyed to the tail gas discharge end through the branch pipeline by adjusting the branch flow control valve; meanwhile, because the main pipeline between the cathode and the tail gas discharge end is also provided with the cathode pressure regulator, the air flow and the pressure required by the cathode can be sent into the cathode according to the power generation requirement of the fuel cell stack by regulating the air compressor, the branch flow control valve and the cathode pressure regulator.
In practical application, please refer to fig. 2, which shows a schematic structural diagram of a fuel cell system according to an embodiment of the present invention. As shown in fig. 2, a fuel cell system 100 according to an embodiment of the present invention includes an air compressor 21, a bypass flow control valve 22, a humidifier 23, a cathode pressure regulator 24, a fuel cell stack 25, a hydrogen circulation pump 26, a gas-liquid separator 27, an anode pressure regulator 28, an anode drain valve 29, and a tail gas discharge end 30;
wherein, the air compressor 21, the cathode of the fuel cell stack 25 and the tail gas discharge end 30 are connected in sequence by a main pipeline, the air compressor 21 is further connected with the tail gas discharge end 30 by a branch pipeline, the branch pipeline is provided with a branch flow control valve 22, the main pipeline between the cathode and the tail gas discharge end 30 is provided with a cathode pressure regulator 24, and the main pipeline between the air compressor 21 and the fuel cell stack 25 and the main pipeline between the fuel cell stack 25 and the tail gas discharge end 30 are both provided with humidifiers 23;
the hydrogen circulating pump 26 is connected with the fuel cell stack 25 and the gas-liquid separator 27 in series in sequence through a hydrogen pipeline, and the hydrogen circulating pump 26 can be used for circularly pumping the hydrogen into the anode air inlet side of the fuel cell stack 25; the anode pressure regulator 28 is disposed on the hydrogen pipeline on the anode inlet side, the exhaust gas side is connected to the gas-liquid separator 27 through an exhaust pipeline, and the anode exhaust valve 29 is disposed on the exhaust pipeline and is capable of discharging the waste gas and waste liquid after the reaction at the anode to the exhaust gas discharge end 30. In practical applications, the exhaust gas discharge end 30 is a hydrogen diluter.
And S100, receiving road condition parameter information of the road section to be driven, which is sent by the server.
In step S100, the road section to be traveled refers to a road section to be traveled by the vehicle, specifically, a road section in a preset area range ahead of the vehicle traveling direction, where the preset area may be set according to actual needs. The traffic parameter information refers to parameter information that changes power required by the vehicle and is related to the traffic condition of the road section to be driven. Because the vehicle controller of the vehicle is communicated with the server, the vehicle can upload the current position information of the vehicle to the server, then the server can determine the current position of the vehicle based on the current position information of the vehicle, further determine the front road condition parameter information aiming at the vehicle according to the current position of the vehicle to obtain the road condition parameter information of the road section to be driven, and then the server sends the road condition parameter information to the vehicle server.
In practical application, the vehicle further comprises a vehicle-mounted communication terminal, and the vehicle control unit is communicated with the server through the vehicle-mounted communication terminal.
And step S200, determining the actual power and the vehicle condition information of the vehicle.
In the above step S200, the actual power of the vehicle refers to the power that the fuel cell system needs to provide in order to maintain the current running state of the vehicle. The vehicle condition information is information related to a vehicle that affects the amount of output power required by the fuel cell system when the vehicle is caused to reach the target running state.
In practical application, the vehicle information may be a total vehicle mass, which is a sum of a total vehicle equipment mass and an actual load capacity. For the passenger carrying vehicle, the actual carrying capacity can be determined according to the current passenger carrying number, and the actual carrying capacity is obtained by calculating the weight of each passenger to be 65kg and multiplying the calculated weight by the current passenger carrying number.
In practical applications, the actual power is the power which is provided by the driver requesting the vehicle according to the driving requirement of the driver, and particularly is realized by the driver stepping on the accelerator pedal, because the corresponding relation between the opening degree of the accelerator pedal and the power is stored in the vehicle in advance, after the opening degree of the accelerator pedal is obtained, the actual power can be obtained according to the corresponding relation between the opening degree of the accelerator pedal and the power.
And step S300, predicting the required power of the vehicle according to the vehicle condition information and the road condition parameter information.
In the step S300, since the vehicle condition information is related to the vehicle that affects the output power required by the fuel cell system when the vehicle reaches the target driving state, and the road condition parameter information is related to the road condition that changes the power required by the vehicle, the required power of the vehicle on the road to be driven can be predicted according to the vehicle condition information and the road condition parameter information, and the output power required by the fuel cell system and used for driving the motor of the vehicle to rotate can be determined according to the required power.
And S400, controlling an air compressor of the fuel cell system to work according to the larger value of the actual power and the required power.
In the above step S400, the actual power determined in the step S200 is compared with the predicted required power in the step S300, a larger value is determined, and the air compressor of the fuel cell system is controlled to operate according to the larger value, that is, the air flow pumped by the air compressor is controlled to enable the fuel cell system to output the electric energy meeting the current power requirement of the vehicle, and to enable the fuel cell system to output the electric energy meeting the power requirement of the vehicle on the road section to be traveled.
And S500, adjusting the opening of the branch flow control valve according to the actual power, and controlling the working of the cathode pressure regulator.
In step S500, to enable the electric energy output by the fuel cell to meet the current actual power of the vehicle, the fuel cell stack needs to be controlled to operate according to the actual power, that is, the air flow pumped by the air compressor needs to be distributed between the main pipeline and the branch pipeline by adjusting the opening of the branch flow control valve and adjusting the cathode pressure regulator, so that the flow and the pressure of the air input to the cathode of the fuel cell system through the main pipeline can just provide the fuel cell stack to output the electric energy meeting the current power requirement of the vehicle, and the redundant air is delivered to the tail gas discharge end through the branch pipeline and then discharged out of the fuel cell system.
In the above steps S400 and S500, the air compressor is controlled to operate according to the larger value of the actual power and the required power, the opening of the branch flow control valve is adjusted according to the actual power, and the cathode pressure regulator is controlled to operate, so that the electric energy output by the fuel cell system can meet the current power requirement of the vehicle, and meanwhile, the air flow pressed by the air compressor can meet the power requirement of the vehicle on the road section to be traveled, thereby avoiding the problems of response lag and slow power rise of the fuel cell system caused by sudden rise of the power requirement of the vehicle when the vehicle travels to the road section to be traveled.
In the embodiment of the invention, because the actual power is the power required by the current running state of the vehicle, and the required power is the predicted power required by the vehicle on the road section to be driven, the power required by the current fuel cell can be known and the power to be required to be output by the fuel cell can be predicted through the actual power and the required power, therefore, according to the actual power and the required power, an air compressor, a branch flow control valve and a cathode pressure regulator of the fuel cell system are controlled to work, the air compressor can pump air flow which simultaneously meets the current actual power and the predicted required power of the vehicle in advance, the power output by the fuel cell system immediately can be controlled to meet the current requirement of the vehicle, and redundant air flow can be discharged out of the fuel cell system through a branch pipeline; and because the air flow pumped by the air compressor can also meet the predicted required power, the control mode can store air for the power required by the vehicle running on the road section to be driven, so that the fuel cell system can be loaded according to the required power and improve the output power quickly when the fuel cell system runs on the road section to be driven. Meanwhile, the air compressor is started to work in advance, and the severe fluctuation of the fuel cell stack reaction is avoided by the control mode.
In addition, the fuel cell system can meet the power requirement of the vehicle, so that the defect of slow loading before the fuel cell system is made up by the lithium ion power cell system with large electric quantity is avoided, the carrying electric quantity of the lithium battery is reduced, and the cost of the whole vehicle is saved.
Compared with the prior art, the fuel cell system control method has the following advantages:
the air compressor of the fuel cell system is connected with a branch pipeline, and a branch flow control valve is arranged on the branch pipeline. Because the predicted required power of the vehicle is predicted according to the road condition data in front of the vehicle, the air compressor can be started in advance to prepare for the larger power demand when the vehicle is predicted to have the larger power demand, and the condition that the fuel cell system cannot respond to the larger power demand in real time is avoided; meanwhile, the fuel cell system releases the redundant air pressed by the air compressor through the branch flow control valve control branch pipeline, so that the fuel cell system can output power according to the actual required power of the vehicle, and the problem of low power response speed of the fuel cell system in the existing fuel cell system control technology is solved.
Specifically, please refer to fig. 3, which shows a schematic diagram that a server sends road condition parameter information of a road section to be traveled to a vehicle-mounted communication terminal in real time, as shown in fig. 3, the server collects a road condition ahead through a cloud map, analyzes a route ahead, and sends the route ahead information to a vehicle controller through vehicle-mounted communication interruption, and then the vehicle controller requests the fuel cell controller to start a control compressor in advance according to the road condition parameter information after receiving the road condition parameter information of the road section to be traveled for starting, so as to store the flow and pressure of the cathode air inlet side in advance, greatly increase the loading and unloading speed of the fuel cell system, and meet the dynamic power requirement of the vehicle.
Optionally, in an embodiment, the step S300 includes steps S301 to S302:
step S301, determining the required power according to the road condition information and the vehicle condition information under the condition that the road condition parameter information includes the road condition information.
In step S301, when the server does not find the fuel cell power output scheme when the vehicle is traveling on the road to be traveled in the same model as the current vehicle, the server directly transmits the specific road condition information of the road to be traveled to the vehicle controller via the vehicle-mounted communication terminal, and then the vehicle controller analyzes and determines the required power of the vehicle on the road to be traveled according to the vehicle condition information of the vehicle in combination with the road condition information, and then the vehicle controller sends a power increase or decrease instruction to the fuel cell controller.
Step S302, under the condition that the road condition parameter information comprises basic power data, determining the required power according to the basic power data; and the basic power data is historical maximum power data of the vehicle aiming at the road condition information.
In the step S302, when the road condition parameter information includes the basic power data, it indicates that the current vehicle has driven the road to be traveled or that the vehicle of the same type as the current vehicle has driven the road to be traveled, and the corresponding power output schemes of the fuel cell system have been uploaded to the server; meanwhile, the basic power data is historical maximum power data of the vehicle for the road condition information, that is, the basic power data is the maximum output power provided by a required fuel cell system when the same type of vehicle passes through a road section to be driven, so that the power requirement of the vehicle on the road section to be driven can be predicted according to the basic power data, and the required power is obtained.
In practical applications, the traffic information may include uphill, downhill, congestion, speed limit, and the like.
Optionally, the step S300 is further configured to, after the step S301, further include a step S303:
step S303, uploading the state information of the motor to the server, so that the server can determine the current power data of the motor, and when the current power data is larger than the basic power data corresponding to the current position information, updating the basic power data corresponding to the current position information according to the current power data.
In the step S303, the vehicle controller acquires the current state information of the motor in real time and uploads the current state information and the current position information to the server synchronously, so that the server calculates the actual power of the motor according to the state information and can determine corresponding basic power data according to the current position information; when the current power data is larger than the basic power data corresponding to the current position information, the current power data is the historical maximum power data of the vehicles of the same type at the current position, and therefore the basic power data corresponding to the current position information is updated according to the current power data.
In practical application, a vehicle is required to upload configuration information of a vehicle type and a special identification code of the vehicle type to a server, then the server can intensively count working condition information of corresponding vehicle types, and maximum power data of the same vehicle type on the same road section is used as basic data; thus, after the current vehicle reaches the corresponding position, the server can provide the vehicle with the suggestion of power reserve based on the basic data; meanwhile, the current vehicle also carries out position and power configuration information interaction with the server in real time, namely, the power battery state information of the vehicle, the battery system state information of the fuel and the motor state information are uploaded to the server in real time so as to be shared, analyzed and optimized by the server. The state information of the power battery comprises the voltage of the power battery, the current of the power battery, the temperature of the power battery and the state of charge value of the power battery, the state information of the fuel battery system comprises the voltage of the fuel battery, the current of the fuel battery and the temperature of the fuel battery, the state information of the motor comprises the input voltage of the motor, the input current of the motor and the temperature, and the state information of the motor can also comprise the output voltage of the motor for recovering energy, the output current of the motor and the like.
Specifically, referring to fig. 4, a table of correspondence between air pressure and flow rate of the fuel cell system and power of the fuel cell system is shown, as shown in fig. 4, taking working condition 1 as an example, when the fuel cell system is required to provide 5kw of net output power, it is required to ensure that the cathode air pressure is 100kPa, the cathode air flow is 5g/min, so that the total output power of the fuel cell stack is 5.8kw, wherein 0.8kw is required to provide for the operation of auxiliary systems such as an air compressor.
In practical application, in order to control the instant output power of the fuel cell system, the current requirement of the vehicle can be met, the opening of the branch flow control valve is adjusted according to the actual power, the cathode pressure regulator is controlled to work, the hydrogen circulating pump and the anode pressure regulator of the fuel cell system are controlled according to the actual power, and the flow and the pressure of the hydrogen input into the anode of the fuel cell system can be adjusted through adjusting the hydrogen circulating pump and the anode pressure regulator, so that the fuel cell stack can just output the electric energy meeting the current power requirement of the vehicle.
Alternatively, in an implementation manner, in the fuel cell system control method provided by the embodiment of the present invention, the vehicle includes an electric motor, the electric motor is electrically connected to the fuel cell system, and the step S401 includes steps S4011 to S4015.
In the present embodiment, the fuel cell system drives the vehicle to travel according to the driving demand of the driver by supplying power to the motor.
And S4011, predicting the required current of the motor according to the larger value of the actual power and the required power.
In step S4011, the required current of the motor is calculated according to the larger value of the actual power currently required by the vehicle and the predicted required power of the vehicle on the road to be traveled, in combination with the corresponding relationship between the output power and the current of the motor.
And S4012, determining theoretical oxygen flow and theoretical hydrogen flow according to the required current.
In step S4012, the amount of oxygen theoretically required to generate the required current, that is, the theoretical oxygen flow rate is calculated according to the required current determined in step S4011 and an electrochemical formula of the current generated by the fuel cell system.
In practical application, in step S4012, the theoretical oxygen flow Q required per minuteTheory of O2The calculation can be made according to the following equation (1): qTheory of O2＝Ifc×NCell×22.4×60/4×96485 (1)，
Wherein, IfcIndicating the required current, NCellIndicates the number of cells in the fuel cell system.
In step S4012, the hydrogen amount theoretically required to generate the required current, that is, the theoretical hydrogen amount, is calculated according to the required current determined in step S4011 and an electrochemical formula of the current generated by the fuel cell system.
In practical application, in step S4012, the theoretical oxygen flow Q required per minuteTheory of H2The calculation can be made according to the following equation (1): qTheory of H2＝Ifc×NCell×22.4×60/2×96485 (1)，
Wherein, IfcIndicating the required current, NCellIndicates the number of cells in the fuel cell system.
And S4013, determining the excess oxygen flow according to the theoretical hydrogen flow.
In step S4013, in order to make the hydrogen react completely and prevent the hydrogen from being reversed due to an excessive pressure difference between two sides of the membrane of the fuel cell stack caused by an excessive hydrogen flow rate, it is necessary to ensure an excessive oxygen amount, and the excessive oxygen flow rate is the excessive oxygen amount required for the theoretical hydrogen flow rate because the required oxygen amount is different. Since the fuel cell system requires different degrees of excess oxygen at different hydrogen flow rates, the determination of the excess oxygen flow rate can be made based on the above theoretical hydrogen flow rate.
In practical applications, the above-mentioned oxygen excess parameter can be converted into an air excess parameter because the oxygen content in air is fixed.
In practical applications, since the performance of different fuel cell systems varies and accordingly the air excess parameters for different fuel cell systems vary for the same hydrogen flow rate, a hydrogen reversal and air excess parameter map in which the abscissa represents the air equivalence ratio and the ordinate represents the hydrogen flow rate and the content represents the correspondence therebetween may be stored in advance in the vehicle.
And S4014, determining the total oxygen flow according to the theoretical oxygen flow and the excess oxygen flow.
In the above step S4014That is, the total required oxygen flow rate is calculated from the excess oxygen flow rate and the theoretical oxygen flow rate. In practical application, the theoretical hydrogen flow can be used for inquiring a hydrogen reversal pole and air excess parameter comparison map stored in a vehicle, determining the excess air flow, and calculating the excess oxygen flow Q according to the excess air flowFlow rate of O2And further from the QFlow rate of O2Combined theoretical oxygen flow QTheory of O2And calculating to obtain the total flow of oxygen. Specifically, the total flow rate Q of oxygen may be determined by the following formula (2)General assembly：
QGeneral assembly＝QTheory of O2+QExcess of O2 (2)。
And S4015, controlling the air compressor to work according to the total flow of the oxygen.
In step S4015, the air compressor is controlled to compress the air into the fuel cell system according to the total flow rate of the oxygen.
In this embodiment, the total flow of oxygen required is calculated according to the greater value of the actual power of the vehicle and the predicted required power, and the air compressor is controlled to output the electric energy satisfying the actual power of the vehicle by the fuel cell and to provide for the fuel cell system to input the electric energy satisfying the predicted required power of the vehicle.
Alternatively, in an implementation manner, in the fuel cell system control method provided by the embodiment of the present invention, the vehicle further includes a power cell, the power cell is electrically connected to the fuel cell system, and after the step S500, the method further includes a step S600.
In the present embodiment, the power battery is electrically connected to the fuel cell system, and therefore, when the electric energy output from the fuel cell system is excessive, the power battery can be charged to store the excessive electric energy in the power battery.
And step S600, when the output power of the fuel cell system is greater than the actual power, controlling the fuel cell system to charge the power battery according to the difference value between the output power and the actual power.
In the step S600, when the output power of the fuel cell system is greater than the actual power, it indicates that the electric energy currently output by the fuel cell system has exceeded the demand of the vehicle, and because the power battery is electrically connected to the fuel cell system, the fuel cell system may be controlled to supply power to the motor according to the actual power, and the power battery may be charged according to the difference between the output power and the actual power of the vehicle, so as to recover the electric energy.
In practical application, please refer to fig. 5, which shows a schematic diagram of a control strategy of a fuel cell system according to an embodiment of the present invention. As shown in fig. 5, the vehicle controller determines the response current I of the fuel cell system according to the actual power of the vehiclefcThrough the IfcDetermination of theoretical oxygen flow QTheory of O2And theoretical hydrogen flow rate QTheory of H2(ii) a And determining the oxygen excess flow Q by combining the theoretical hydrogen flow and the comparison table of the hydrogen antipole and the air excess coefficient through an air excess demand signalTheory of O2(ii) a Then the theoretical oxygen flow QTheory of O2And oxygen excess flow rate QTheory of O2Determining a theoretical total air flow;
meanwhile, the server predicts the required power of the road section to be driven through a big data map, and further determines the air requirement Q of the future fuel cell through the required powerAir demand(ii) a Then selecting QAir demandThe maximum value of the theoretical total air flow is fed back to the air compressor controller, the air compressor is controlled to work, and the air flow corresponding to the maximum value is provided;
meanwhile, according to the theoretical total air flow and the actual total air flow pumped by the air compressor, the opening degree of the cathode pressure regulator and a branch flow control valve at a branch pipeline are adjusted, so that the air flow sent to the cathode of the fuel cell stack can be supplied to the fuel cell system to output electric energy meeting the actual power;
meanwhile, the actual output current value of the fuel cell system is monitored, whether the actual output current value is equal to the required current value or not is monitored in a circulating mode through a proportional integral closed loop regulation algorithm (PI), and if not, the opening degree of the cathode pressure regulator and a branch flow control valve at a branch pipeline are continuously regulated until the actual output current value is equal to the required current value.
It can be seen that because the control strategy reserves the flow and pressure on the cathode inlet side in advance, the loading and unloading speeds of the fuel cell system are greatly increased, and the dynamic power requirement of the vehicle is met.
In practical application, please refer to fig. 6, which shows a flowchart of the implementation of the fuel cell system control method according to the embodiment of the present invention.
As shown in fig. 6, in step S601, the remote operation and maintenance layer of the server determines whether there is original road condition input data similar to or consistent with road condition data of a road section to be traveled by the vehicle according to the position information of the vehicle, if not, step S302 is performed, otherwise, step S603 is performed;
in step S602, collecting road condition information of a road section to be traveled, and then entering step S604;
in step S603, the output power of the existing fuel cell system under similar road conditions is output to the vehicle-mounted terminal, specifically to the vehicle-mounted communication terminal;
in step S604, the collected road condition information of the road section to be driven or the output power of the existing fuel cell system with similar road conditions is input to the vehicle-mounted terminal;
in step S605, the Vehicle-mounted terminal inputs the received data to a Vehicle Control Unit (VCU), and the VCU transmits the received data to a Fuel Cell Unit (FCU) according to the existing power requirement of the similar road condition;
in step S606, the FCU provides the rotation speed and increases the air flow rate by other hydrogen air compressors according to the existing power demand of the similar road condition and the information of the road condition ahead, and the pressure and flow rate of the reaction gas of the fuel cell system are rapidly adjusted by the cathode agent regulating valve and the branch flow control valve to control the fuel cell to output the electric energy according to the actual power;
in step S607, the VCU uploads the power battery state information of the vehicle, the battery system state information of the fuel, and the motor state information to the server through the in-vehicle terminal in real time, so that the server can share, analyze, and optimize the basic data. The state information of the power battery comprises power battery voltage, power battery current, power battery temperature and power battery state of charge value, the state information of the fuel battery system comprises fuel battery voltage, fuel battery current and fuel battery temperature, the state information of the motor comprises motor input voltage, motor input current and temperature, and the state information of the motor can also comprise motor output voltage for recovering energy, motor output current and the like;
the cloud operation and maintenance layer of the server comprises basic input data uploaded by a current vehicle through a vehicle-mounted terminal (T-BOX), shared data uploaded by other vehicles of the same type after passing through the same route, and data obtained by self-learning and summarizing of the server, wherein the data which are screened after the basic data are compared with the self-learning data have the largest driving power requirement and the vehicle economy is excellent.
Another objective of the present invention is to provide a fuel cell system control device, wherein the fuel cell system control device is applied to a vehicle controller of a vehicle, the vehicle controller is in communication with a server, the vehicle includes a fuel cell system, an air compressor, a cathode and an exhaust gas discharge end of the fuel cell system are sequentially connected by a main pipeline, the air compressor is further connected with the exhaust gas discharge end by a branch pipeline, the branch pipeline is provided with a branch flow control valve, and a main pipeline between the cathode and the exhaust gas discharge end is provided with a cathode pressure regulator, wherein please refer to fig. 7, fig. 7 shows a schematic structural diagram of the fuel cell system control device according to an embodiment of the present invention, and the device includes:
the receiving module 71 is configured to receive road condition parameter information of a road section to be traveled, which is sent by the server;
a determination module 72 for determining actual power and vehicle condition information of the vehicle;
the prediction module 73 is configured to predict the required power of the vehicle according to the vehicle condition information and the road condition parameter information;
a first control module 74 for controlling operation of an air compressor of the fuel cell system based on a greater of the actual power and the requested power;
and a second control module 75, configured to adjust the opening of the branch flow control valve according to the actual power, and control the cathode pressure regulator to operate, so that the fuel cell system outputs electric energy according to the actual power.
In the device according to the embodiment of the present invention, since the prediction module 73 predicts the predicted required power of the vehicle according to the road condition data in front of the vehicle, when the vehicle is predicted to have a large power demand, the air compressor is started in advance to prepare for the large power demand, and then the first control module 74 controls the air compressor of the fuel cell system to operate according to the larger value of the actual power and the required power, so as to avoid the problem that the fuel cell system cannot respond to the large power demand immediately; at the same time, the second control module 75 controls the branch pipe to release the excess air pressed by the air compressor through the branch flow control valve, so that the fuel cell system can output power according to the actual required power of the vehicle.
Optionally, in the fuel cell system control apparatus, the vehicle includes a motor electrically connected to the fuel cell system, and the first control module includes:
the prediction unit is used for predicting the required current of the motor according to the larger value of the actual power and the required power;
the first determining unit is used for determining theoretical oxygen flow and theoretical hydrogen flow according to the required current;
a second determination unit for determining an excess oxygen flow rate based on the theoretical hydrogen flow rate;
a third determining unit, configured to determine a total oxygen flow rate according to the theoretical oxygen flow rate and the excess oxygen flow rate;
and the control unit is used for controlling the work of the air compressor according to the total flow of the oxygen.
Optionally, in the fuel cell system control apparatus, the vehicle further includes a power battery electrically connected to the fuel cell system; the device further comprises:
and the third control module is used for controlling the fuel cell system to charge the power battery according to the difference value between the output power and the actual power when the output power of the fuel cell system is greater than the actual power.
Alternatively, in the fuel cell system control device, the prediction module 73 includes:
a fourth determining unit, configured to determine the required power according to the road condition information and the vehicle condition information when the road condition parameter information includes road condition information;
a fifth determining unit, configured to determine the required power according to the basic power data when the road condition parameter information includes the basic power data; and the basic power data is historical maximum power data of the vehicle aiming at the road condition information.
It is a further object of the present invention to provide a storage medium having a plurality of instructions stored thereon, wherein the instructions are adapted to be loaded by a processor and to perform the fuel cell system control method as described above.
It is still another object of the present invention to provide an electronic device, which includes:
a processor adapted to implement instructions; and
a storage medium adapted to store a plurality of instructions adapted to be loaded by a processor and to perform the fuel cell system control method as described above.
It is a further object of the present invention to propose a vehicle including the fuel cell system control apparatus as described above.
The storage medium, the electronic device and the vehicle have the same advantages as the fuel cell system control method and the fuel cell system control device in comparison with the prior art, and are not repeated herein.
In summary, according to the fuel cell system control method, device, storage medium, electronic device, and vehicle provided by the present application, an air compressor, a cathode, and a tail gas discharge end of a fuel cell system are sequentially connected by a main pipeline, a cathode pressure regulator is provided on the main pipeline between the cathode and the tail gas discharge end, the air compressor of the fuel cell system is connected to the tail gas discharge end by a branch pipeline, and a branch flow control valve is provided on the branch pipeline; when receiving road condition parameter information of a road section to be driven sent by a server, determining actual power and vehicle condition information of a vehicle, predicting required power of the vehicle according to the vehicle condition information and the road condition parameter information, controlling an air compressor of the fuel cell system to work according to the larger value of the actual power and the required power, adjusting the opening degree of a branch flow control valve according to the actual power, and controlling a cathode pressure regulator of the fuel cell system to work so that the fuel cell system outputs electric energy according to the actual power. Because the predicted required power of the vehicle is predicted according to the road condition data in front of the vehicle, the air compressor can be started in advance to prepare for the larger power demand when the vehicle is predicted to have the larger power demand, and the problem that a fuel cell system cannot respond to the larger power demand in real time is avoided; meanwhile, the fuel cell system controls the branch pipeline to release the excess air pressed by the air compressor through the branch flow control valve, so that the fuel cell system can output power according to the actual required power of the vehicle.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
In a typical configuration, the computer device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory. The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium. Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include non-transitory computer readable media (fransitory media), such as modulated data signals and carrier waves.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The above detailed description of the fuel cell system control method, apparatus, storage medium, electronic device and vehicle provided by the present invention has been provided, and the principle and implementation of the present invention are explained by applying specific examples, and the description of the above examples is only used to help understanding the method and core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A fuel cell system control method is characterized in that the method is applied to a vehicle controller of a vehicle, the vehicle controller is communicated with a server, the vehicle comprises a fuel cell system, an air compressor of the fuel cell system is connected with a branch pipeline, a branch flow control valve is arranged on the branch pipeline, and the method comprises the following steps:
receiving road condition parameter information of a road section to be driven, which is sent by the server;
determining actual power and vehicle condition information of the vehicle;
predicting the required power of the vehicle according to the vehicle condition information and the road condition parameter information;
controlling an air compressor of the fuel cell system to work according to the larger value of the actual power and the required power;
and adjusting the opening degree of the branch flow control valve according to the actual power, and controlling the work of a cathode pressure regulator of the fuel cell system so that the fuel cell system outputs electric energy according to the actual power.
2. The fuel cell system control method according to claim 1, wherein the vehicle includes an electric motor that is electrically connected to the fuel cell system, and the controlling an operation of an air compressor of the fuel cell system in accordance with the larger of the actual power and the required power includes:
predicting the required current of the motor according to the larger value of the actual power and the required power;
determining theoretical oxygen flow and theoretical hydrogen flow according to the required current;
determining the excess oxygen flow according to the theoretical hydrogen flow;
determining the total flow of oxygen according to the theoretical oxygen flow and the excess oxygen flow;
and controlling the air compressor to work according to the total flow of the oxygen.
3. The fuel cell system control method according to claim 1, wherein the vehicle further includes a power cell that is electrically connected to the fuel cell system, the method further comprising:
and when the output power of the fuel cell system is greater than the actual power, controlling the fuel cell system to charge the power cell according to the difference value between the output power and the actual power.
4. The fuel cell system control method according to claim 1, wherein the predicting the required power of the vehicle based on the vehicle condition information and the road condition parameter information includes:
determining the required power according to the road condition information and the vehicle condition information under the condition that the road condition parameter information comprises the road condition information;
determining the required power according to the basic power data under the condition that the road condition parameter information comprises basic power data; and the basic power data is historical maximum power data of the vehicle aiming at the road condition information.
5. A fuel cell system control device, characterized in that, is applied to a vehicle control unit of a vehicle, the vehicle control unit communicates with a server, the vehicle includes a fuel cell system, an air compressor, a cathode and a tail gas discharge end of the fuel cell system are sequentially connected by a main pipeline, the air compressor is further connected with the tail gas discharge end by a branch pipeline, the branch pipeline is provided with a branch flow control valve, a main pipeline between the cathode and the tail gas discharge end is provided with a cathode pressure regulator, the device includes:
the receiving module is used for receiving the road condition parameter information of the road section to be driven, which is sent by the server;
the determining module is used for determining the actual power and the vehicle condition information of the vehicle;
the prediction module is used for predicting the required power of the vehicle according to the vehicle condition information and the road condition parameter information;
the first control module is used for controlling an air compressor of the fuel cell system to work according to the larger value of the actual power and the required power;
and the second control module is used for adjusting the opening of the branch flow control valve according to the actual power and controlling the work of the cathode pressure regulator so that the fuel cell system outputs electric energy according to the actual power.
6. The fuel cell system control device according to claim 5, wherein the vehicle includes an electric motor that is electrically connected to the fuel cell system, the first control module includes:
the prediction unit is used for predicting the required current of the motor according to the larger value of the actual power and the required power;
the first determining unit is used for determining theoretical oxygen flow and theoretical hydrogen flow according to the required current;
a second determination unit for determining an excess oxygen flow rate based on the theoretical hydrogen flow rate;
a third determining unit, configured to determine a total oxygen flow rate according to the theoretical oxygen flow rate and the excess oxygen flow rate;
and the control unit is used for controlling the work of the air compressor according to the total flow of the oxygen.
7. The fuel cell system control device according to claim 5, wherein the vehicle further includes a power battery that is electrically connected to the fuel cell system; the device further comprises:
and the third control module is used for controlling the fuel cell system to charge the power battery according to the difference value between the output power and the actual power when the output power of the fuel cell system is greater than the actual power.
8. The fuel cell system control device according to claim 5, wherein the prediction module includes:
a fourth determining unit, configured to determine the required power according to the road condition information and the vehicle condition information when the road condition parameter information includes road condition information;
a fifth determining unit, configured to determine the required power according to the basic power data when the road condition parameter information includes the basic power data; and the basic power data is historical maximum power data of the vehicle aiming at the road condition information.
9. A storage medium having stored thereon a plurality of instructions adapted to be loaded by a processor and to perform a fuel cell system control method according to any one of claims 1 to 4.
10. A vehicle characterized by comprising the fuel cell system control device according to any one of claims 5 to 8.
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