CN110281817B - Energy control method of fuel cell engine - Google Patents

Energy control method of fuel cell engine Download PDF

Info

Publication number
CN110281817B
CN110281817B CN201910480165.6A CN201910480165A CN110281817B CN 110281817 B CN110281817 B CN 110281817B CN 201910480165 A CN201910480165 A CN 201910480165A CN 110281817 B CN110281817 B CN 110281817B
Authority
CN
China
Prior art keywords
fuel cell
interval
value
soc
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910480165.6A
Other languages
Chinese (zh)
Other versions
CN110281817A (en
Inventor
傅立运
王凯
易正根
徐世龙
丁成
梅赟栋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FAW Jiefang Automotive Co Ltd
Original Assignee
FAW Jiefang Automotive Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FAW Jiefang Automotive Co Ltd filed Critical FAW Jiefang Automotive Co Ltd
Priority to CN201910480165.6A priority Critical patent/CN110281817B/en
Publication of CN110281817A publication Critical patent/CN110281817A/en
Application granted granted Critical
Publication of CN110281817B publication Critical patent/CN110281817B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B60L50/75—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
    • B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention belongs to the technical field of fuel cell engines, discloses an energy control method of a fuel cell engine, and provides an energy control method of a fuel cell engine, which changes with the power requirement of a commercial vehicle, aiming at the defects in the prior art. According to the working principle of the fuel cell engine, the SOC value of the power cell battery, the vehicle power demand and the vehicle load, the power generation power of the fuel cell engine is automatically adjusted, the vehicle power demand is met, the SOC value of the power cell battery is kept in a reasonable range, the fuel cell engine is enabled to run in a higher efficiency area, the frequent working condition change of the fuel cell engine is avoided, and the service life of the fuel cell engine is prolonged.

Description

Energy control method of fuel cell engine
Technical Field
The invention belongs to the technical field of fuel cell engines, and relates to matching control of a fuel cell engine and a vehicle.
Background
Chinese patent CN107310420A discloses a low-power fuel cell vehicle and a control system and a control method thereof, in which a vehicle control unit determines which power of an economic grade power, a high grade power, a rated power and a peak power a fuel cell engine works with according to a state of a mode selection switch and a charge value of a power cell, and controls a fuel cell manager according to a mode of the fuel cell engine, and when the charge value of the power cell is within a preset range, the vehicle control unit controls the fuel cell manager to start the low-power fuel cell engine to output a continuous and stable power, and controls the power cell to provide an instantaneous power.
Chinese patent CN104827922A discloses a fuel cell vehicle and a control method and a control system thereof, which determine the operating mode of a fuel cell engine according to the fault state of the fuel cell vehicle, the charge value of a power battery and the state of a mode selection switch, and control a fuel cell engine manager according to the mode.
The prior art has the following defects:
1. the power grade of the fuel cell engine is determined according to the state of the mode selection switch and the charge value of the power cell, a driver is required to adjust according to actual requirements, the fuel cell engine cannot work in an economic area and meet the requirements of vehicle dynamic performance according to the actual running working condition of the vehicle, and meanwhile, the driver is required to judge the running working condition in the running process of the vehicle, control the mode switch and increase the running burden of the driver.
2. The working mode of the fuel cell engine is determined according to the fault state of the fuel cell vehicle, the charge value of the power cell and the state of the mode selection switch, a driver needs to select a power following mode or a thermostat mode according to the actual working condition, the load of the driver is increased, the driver selects the power following mode, the load of the fuel cell engine needs to be changed frequently, and the service life of the fuel cell engine is damaged.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned shortcomings of the prior art and providing a method for controlling fuel cell engine energy as a function of power demand of a commercial vehicle. According to the working principle of the fuel cell engine, the SOC value of the power cell battery, the vehicle power demand and the vehicle load, the power generation power of the fuel cell engine is automatically adjusted, the vehicle power demand is met, the SOC value of the power cell battery is kept in a reasonable range, the fuel cell engine is enabled to run in a higher efficiency area, the frequent working condition change of the fuel cell engine is avoided, and the service life of the fuel cell engine is prolonged.
The technical scheme adopted by the invention is as follows:
a fuel cell engine energy control system comprising: the system comprises a fuel cell engine 1, a fuel cell DC/DC device 2, a motor driver 3, a motor 4, a power cell DC/DC device 5, a power cell 6, a fuel cell controller 7, a power cell controller 8, a vehicle control unit 9, an SOC detection device 10, a motor rate detection device 11, an auxiliary electrical power detection device 12 and a load detection device 13.
The power battery and the fuel cell engine jointly supply power to the vehicle, and the energy balance equation of the vehicle in the driving process is as follows:
Pvehicle＝Pattachment+Pmotor＝Pcell+Pfc
wherein, PvehicleFor the power demand of the vehicle, PattachmentPower consumed for auxiliary appliances, PmotorPower consumed by the motor for driving the vehicle, PcellPower delivered to the power cell; pfcIs the power of the fuel cell engine;
dividing a fuel cell engine power section into F, A, B, C, D and E six sections according to a fuel cell engine operation performance curve, power Peffmax at a maximum efficiency point of the fuel cell engine, power Peff 0.9 Peffmax, power section F in a region between 0 and Peff, rated power Pmax at the fuel cell engine, section A in a region between Peff and Peff +0.2 (Pmax-Peff), section B in a region between Peff +0.2 (Pmax-Peff) and Peff +0.4 (Pmax-Peff), section C in a region between Peff +0.4 (Pmax-Peff) and Peff +0.6 (Pmax-Peff), and section D in a region between Pmax +0.6 (Pmax-Peff) and Peff +0.8 (Pmax-Peff), the E-zone is a region between the fuel cell engine power Peff +0.8 × (Pmax-Peff) and Pmax.
The efficiency is greatly changed along with the power in an F section, the control is not facilitated, the fuel cell engine does not use the power of the F section, the fuel cell engine does not work or works in A, B, C, D and E five sections in the vehicle running process, three operating points are respectively arranged in each of A, B, C, D and E five sections, the a1 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff)/4, the a2 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff)/2, the a3 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff) x 3/4, the b1 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff) +0.2 (Pmax-Peff)/4, the b2 operating point corresponds to a working point of the fuel cell engine power Peff +0.15 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, the b3 operating point corresponds to a working point of the fuel cell engine power Peff +0.15 x (Pmax-Peff) +0.2 x (Pmax-Peff) × 3/4, the c1 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x (Pmax-Peff)/4, the c2 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, the c2 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, and the c 382 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x) (Pmax-Peff)/3, the working point corresponds to a working point of the fuel cell engine power Peff (Pmax-Peff) + 0.387 Pmax + 0.55-Peff) + Peff), the working point of d2 corresponds to the working point of the fuel cell engine power Peff +0.55 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, the working point of d3 corresponds to the working point of the fuel cell engine power Peff +0.55 x (Pmax-Peff) +0.2 x (Pmax-Peff) × 3/4, the working point of e1 corresponds to the working point of the fuel cell engine power Peff +0.75 x (Pmax-Peff) +0.25 x (Pmax-Peff)/4, the working point of e2 corresponds to the working point of the fuel cell engine power Peff +0.75 x (Pmax-Peff) +0.25 x (Pmax-Peff)/2, and the working point of e3 corresponds to the working point of the fuel cell engine power Peff +0.75 x (Pmax-Peff) +0.25 x (Pmax-Peff) × 3/4.
The commercial vehicle runs at the same speed, the more the loads are carried, the larger the power consumption speed of the load is, and in order to avoid the situation that the SOC of the power battery is reduced too fast and ensure that the SOC value of the battery is in a normal range, different control strategies are respectively set according to light load, medium load and heavy load, the efficiency of the engine power of the fuel battery is reduced along with the increase of the power when the engine power works in an interval from A to E, the efficiency is the highest in the interval from A, the efficiency is the lowest in the interval from E, and the operating point close to the interval from A is preferably selected in the control strategies.
The load of the commercial vehicle is judged through a load detection device and divided into light load, medium load and heavy load, and when the load detection device detects that the load is 0-20% of the maximum load of the vehicle, the load is judged to be light load; when the load detection device detects that the load is between 20% and 60% of the maximum load of the vehicle, the load is judged to be the medium load; when the load detection device detects that the load is between 60% and 100% of the maximum load of the vehicle, the vehicle is judged to be heavy;
the rated power output by the fuel cell engine is Pmax, the region between the power 0 and the Pmax is divided into 9 sections, and the value of the set power point P1 is 0.11 multiplied by Pmax; the value of the power point P2 is set to 0.22 × Pmax; the value of the set power point P3 is 0.33 × Pmax; the value of the set power point P4 is 0.44 × Pmax; the value of the set power point P5 is 0.55 × Pmax; the value of the set power point P6 is 0.66 × Pmax; the value of the set power point P7 is 0.77 × Pmax; the value of the set power point P8 is 0.88 × Pmax;
eight power points of P1, P2, P3, P4, P5, P6, P7 and P8 are set in sequence from low to high between 0 and Pmax, the power is a region P _ region1 from 0 to P1, the power is a region P _ region2 from P1 to P2, the power is a region P _ region3 from P2 to P3, the power is a region P _ region4 from P3 to P4, the power is a region P _ region5 from P4 to P5, the power is a region P _ region6 from P5 to P6, the power is a region P _ region7 from P6 to P7, the power is a region P _ region8 from P7 to P8, and the power is a region P9 from P8 to P9.
Dividing the SOC value of the power battery into seven stages according to 0-100 percent: setting the SOC value of the power battery as Soc _ s0 when the SOC value is between 100% and 80%; setting the state of charge SOC value of the power battery to be Soc _ s1 when the SOC value is between 80% and 70%; setting the state of charge SOC value of the power battery as Soc _ s2 when the SOC value is between 70% and 60%; setting the SOC value of the power battery as Soc _ s3 when the SOC value is between 60% and 50%; setting the SOC value of the power battery as Soc _ s4 when the SOC value is between 50% and 40%; setting the SOC value of the power battery as Soc _ s5 when the SOC value is between 40% and 30%; and when the SOC value of the power battery is between 30% and 0%, setting the state of charge to be Soc _ min stage.
The power demand of the vehicle on the fuel cell engine is obtained by statistical calculation according to the average consumed power of the vehicle in a period of time, the consumed power of the vehicle is obtained by a power detection device, and the power Pave required by the vehicle on the fuel cell engine is calculated according to the following formula:
Pave＝[Pave1×(t0-t1)+Pave2×(t1-t2)+Pave3×(t2-t3)]/(t0-t3)
during running of the vehicle, t0 is the current time point, t1 is the time point before t0, t2 is the time point before t1, t3 is the time point before t2, Pave1 is the average power between t0 and t1, Pave2 is the average power between t1 and t2, and Pave3 is the average power between t2 and t 3. During the running process of the vehicle, the difference values of t0-t1, t1-t2 and t2-t3 are set to be fixed values, t0-t1 is set to be 1min, t1-t2 is set to be 5min, and t2-t3 is set to be 10 min.
During the running of the vehicle, the fuel cell engine can be in a non-operating state, or A, B, C, D, E can be in one of 15 operating state points in five power intervals.
When the load detection device detects that the vehicle is in light load, the working state (non-working state or working state) and the working state point of the fuel cell engine are judged by detecting the SOC value of the power battery and the power Pave value required by the vehicle to the fuel cell engine and looking up the table 1 and the table 2.
When the current state of the fuel cell engine is in an inoperative state, judging the next state or power interval of the fuel cell engine according to the SOC value and the Pave value in table 1, if the fuel cell engine still needs to be in the inoperative state, the fuel cell engine continues to be stopped, if the next state of the fuel cell engine is in A, B, C, D, E five power intervals, selecting the power interval in which the fuel cell engine needs to be in according to the table 1, and selecting the working state point in the corresponding power interval according to the table 5.
If the current state of the fuel cell engine is at a certain operating point in the A, B, C, D, E power interval, judging the next power interval of the fuel cell engine according to the table 1 by the SOC value and the Pave value, if the power interval of the fuel cell engine is not changed, the working state point of the fuel cell engine is not changed, and if the power interval of the fuel cell engine needs to be changed, selecting the working state point in the corresponding power interval according to the table 2.
TABLE 1
Figure GDA0003376072440000041
TABLE 2
Figure GDA0003376072440000042
In tables 1 and 2-indicate that the fuel cell engine is not operating.
When the load detection device detects that the vehicle is at a medium load, the lookup tables 3 and 4 determine the working state (non-working or working) and the working state point of the fuel cell engine by detecting the SOC value of the power battery and the power Pave value required by the vehicle for the fuel cell engine.
When the current state of the fuel cell engine is in an inoperative state, judging the next state or power interval of the fuel cell engine according to the SOC value and the Pave value in table 3, if the fuel cell engine still needs to be in the inoperative state, the fuel cell engine continues to be stopped, if the next state of the fuel cell engine is in A, B, C, D, E five power intervals, selecting the power interval in which the fuel cell engine needs to be in according to the table 3, and selecting the working state point in the corresponding power interval according to the table 4.
If the current state of the fuel cell engine is at a certain working state point in A, B, C, D, E power intervals, judging the next power interval of the fuel cell engine according to the table 3 by the SOC value and the Pave value, if the power interval of the fuel cell engine is not changed, the working state point of the fuel cell engine is not changed, and if the power interval of the fuel cell engine needs to be changed, selecting the working state point in the corresponding power interval according to the table 4.
TABLE 3
Figure GDA0003376072440000051
TABLE 4
Figure GDA0003376072440000052
In tables 3 and 4-indicate that the fuel cell engine is not operating.
When the load detection device detects that the vehicle is in heavy load, the working state (non-working or working) and the working state point of the fuel cell engine are determined by detecting the SOC value of the power battery and the Pave value of the power required by the vehicle for the fuel cell engine through lookup tables 5 and 6;
when the current state of the fuel cell engine is in an inoperative state, judging the next state or power interval of the fuel cell engine according to the SOC value and the Pave value in table 5, if the fuel cell engine still needs to be in the inoperative state, the fuel cell engine continues to be stopped, if the next state of the fuel cell engine is in A, B, C, D, E five power intervals, selecting the power interval in which the fuel cell engine needs to be in according to the table 5, and selecting the working state point in the corresponding power interval according to the table 6.
When the current state of the fuel cell engine is in a certain working state in A, B, C, D, E power intervals, judging the next power interval of the fuel cell engine according to the SOC value and the Pave value in table 5, if the power interval of the fuel cell engine is not changed, the working state point of the fuel cell engine is not changed, and if the power interval of the fuel cell engine needs to be changed, selecting the working state point in the corresponding power interval according to table 6.
TABLE 5
Figure GDA0003376072440000061
TABLE 6
Figure GDA0003376072440000062
In tables 5 and 6-indicate that the fuel cell engine is not operating.
The invention has the beneficial effects that:
1. the fuel cell engine automatically selects the operation working condition according to the vehicle power requirement in the running process of the vehicle, ensures that the fuel cell engine operates under the working condition of a higher efficiency area, and improves the fuel utilization rate.
2. The fuel cell operates at a limited working state point, so that the frequent power conversion of the fuel cell engine is avoided, and the service life of the fuel cell engine is prolonged.
Drawings
FIG. 1 is a schematic diagram of a fuel cell engine power control system;
FIG. 2 is a schematic diagram of a fuel cell engine operating performance curve and power interval division and operating point;
FIG. 3 is a schematic diagram of the time point division and power definition for calculating the power demand of a vehicle;
FIG. 4 is a schematic illustration of a fuel cell engine operating performance curve and power point definition;
Detailed Description
The technical solution of the present invention is further explained and illustrated below by way of specific examples.
A fuel cell engine energy control system comprising: the system comprises a fuel cell engine 1, a fuel cell DC/DC device 2, a motor driver 3, a motor 4, a power cell DC/DC device 5, a power cell 6, a fuel cell controller 7, a power cell controller 8, a vehicle control unit 9, an SOC detection device 10, a motor rate detection device 11, an auxiliary electrical power detection device 12 and a load detection device 13.
The power battery and the fuel cell engine jointly supply power to the vehicle, and the energy balance equation of the vehicle in the driving process is as follows:
Pvehicle＝Pattachment+Pmotor＝Pcell+Pfc
wherein, PvehicleFor the power demand of the vehicle, PattachmentPower consumed for auxiliary appliances, PmotorPower consumed by the motor for driving the vehicle, PcellPower delivered to the power cell; pfcIs the power of the fuel cell engine;
dividing a fuel cell engine power section into F, A, B, C, D and E six sections according to a fuel cell engine operation performance curve, power Peffmax at a maximum efficiency point of the fuel cell engine, power Peff 0.9 Peffmax, power section F in a region between 0 and Peff, rated power Pmax at the fuel cell engine, section A in a region between Peff and Peff +0.2 (Pmax-Peff), section B in a region between Peff +0.2 (Pmax-Peff) and Peff +0.4 (Pmax-Peff), section C in a region between Peff +0.4 (Pmax-Peff) and Peff +0.6 (Pmax-Peff), and section D in a region between Pmax +0.6 (Pmax-Peff) and Peff +0.8 (Pmax-Peff), the E-zone is a region between the fuel cell engine power Peff +0.8 × (Pmax-Peff) and Pmax.
The efficiency is greatly changed along with the power in an F section, the control is not facilitated, the fuel cell engine does not use the power of the F section, the fuel cell engine does not work or works in A, B, C, D and E five sections in the vehicle running process, three operating points are respectively arranged in each of A, B, C, D and E five sections, the a1 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff)/4, the a2 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff)/2, the a3 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff) x 3/4, the b1 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff) +0.2 (Pmax-Peff)/4, the b2 operating point corresponds to a working point of the fuel cell engine power Peff +0.15 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, the b3 operating point corresponds to a working point of the fuel cell engine power Peff +0.15 x (Pmax-Peff) +0.2 x (Pmax-Peff) × 3/4, the c1 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x (Pmax-Peff)/4, the c2 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, the c2 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, and the c 382 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x) (Pmax-Peff)/3, the working point corresponds to a working point of the fuel cell engine power Peff (Pmax-Peff) + 0.387 Pmax + 0.55-Peff) + Peff), the working point of d2 corresponds to the working point of the fuel cell engine power Peff +0.55 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, the working point of d3 corresponds to the working point of the fuel cell engine power Peff +0.55 x (Pmax-Peff) +0.2 x (Pmax-Peff) × 3/4, the working point of e1 corresponds to the working point of the fuel cell engine power Peff +0.75 x (Pmax-Peff) +0.25 x (Pmax-Peff)/4, the working point of e2 corresponds to the working point of the fuel cell engine power Peff +0.75 x (Pmax-Peff) +0.25 x (Pmax-Peff)/2, and the working point of e3 corresponds to the working point of the fuel cell engine power Peff +0.75 x (Pmax-Peff) +0.25 x (Pmax-Peff) × 3/4.
The commercial vehicle runs at the same speed, the more the loads are carried, the larger the power consumption speed of the load is, and in order to avoid the situation that the SOC of the power battery is reduced too fast and ensure that the SOC value of the battery is in a normal range, different control strategies are respectively set according to light load, medium load and heavy load, the efficiency of the engine power of the fuel battery is reduced along with the increase of the power when the engine power works in an interval from A to E, the efficiency is the highest in the interval from A, the efficiency is the lowest in the interval from E, and the operating point close to the interval from A is preferably selected in the control strategies.
The load of the commercial vehicle is judged through a load detection device and divided into light load, medium load and heavy load, and when the load detection device detects that the load is 0-20% of the maximum load of the vehicle, the load is judged to be light load; when the load detection device detects that the load is between 20% and 60% of the maximum load of the vehicle, the load is judged to be the medium load; when the load detection device detects that the load is between 60% and 100% of the maximum load of the vehicle, the vehicle is judged to be heavy, and the table 7 shows that the load is heavy;
TABLE 7
Light load Medium load Heavy load
0-20％ 20％-60％ 60％-100％
The rated power output by the fuel cell engine is Pmax, the region between the power 0 and the Pmax is divided into 9 sections, and the value of the set power point P1 is 0.11 multiplied by Pmax; the value of the power point P2 is set to 0.22 × Pmax; the value of the set power point P3 is 0.33 × Pmax; the value of the set power point P4 is 0.44 × Pmax; the value of the set power point P5 is 0.55 × Pmax; the value of the set power point P6 is 0.66 × Pmax; the value of the set power point P7 is 0.77 × Pmax; the value of the set power point P8 is 0.88 × Pmax;
eight power points of P1, P1 are set in sequence from 0 to P1, the power is a region P _ region1 between P1 and P1 points, the power is a region P _ region1 between P1 and P1 points, and the P368 are set in sequence from 0 to Pmax, and as shown in a table;
TABLE 8
P_region1 P_region2 P_region3 P_region4 P_region5 P_region6 P_region7 P_region8 P_region9
0-P1 P1-P2 P2-P3 P3-P4 P4-P5 P5-P6 P6-P7 P7-P8 P8-Pmax
Dividing the SOC value of the power battery into seven stages according to 0-100 percent: setting the SOC value of the power battery as Soc _ s0 when the SOC value is between 100% and 80%; setting the state of charge SOC value of the power battery to be Soc _ s1 when the SOC value is between 80% and 70%; setting the state of charge SOC value of the power battery as Soc _ s2 when the SOC value is between 70% and 60%; setting the SOC value of the power battery as Soc _ s3 when the SOC value is between 60% and 50%; setting the SOC value of the power battery as Soc _ s4 when the SOC value is between 50% and 40%; setting the SOC value of the power battery as Soc _ s5 when the SOC value is between 40% and 30%; setting the SOC to SOC _ min when the SOC is between 30% and 0%, as shown in table 9;
TABLE 9
Soc_s0 Soc_s1 Soc_s2 Soc_s3 Soc_s4 Soc_s5 Soc_min
100％-80％ 80％-70％ 70％-60％ 60％-50％ 50％-40％ 40％-30％ 30％-0％
The power demand of the vehicle on the fuel cell engine is obtained by statistical calculation according to the average consumed power of the vehicle in a period of time, the consumed power of the vehicle is obtained by a power detection device, and the power Pave required by the vehicle on the fuel cell engine is calculated according to the following formula:
Pave＝[Pave1×(t0-t1)+Pave2×(t1-t2)+Pave3×(t2-t3)]/(t0-t3)
during running of the vehicle, t0 is the current time point, t1 is the time point before t0, t2 is the time point before t1, t3 is the time point before t2, Pave1 is the average power between t0 and t1, Pave2 is the average power between t1 and t2, and Pave3 is the average power between t2 and t 3. During the running process of the vehicle, the difference values of t0-t1, t1-t2 and t2-t3 are set to be fixed values, t0-t1 is set to be 1min, t1-t2 is set to be 5min, and t2-t3 is set to be 10 min.
During the running of the vehicle, the fuel cell engine can be in a non-operating state, or A, B, C, D, E can be in one of 15 operating state points in five power intervals.
When the load detection device detects that the vehicle is in light load, the working state (non-working state or working state) and the working state point of the fuel cell engine are judged by detecting the SOC value of the power battery and the power Pave value required by the vehicle to the fuel cell engine and looking up the table 1 and the table 2.
And (4) detecting the interval time ts, and when the SOC value of the power battery is in the SOC _ s1 interval and the Pave value is in the P _ region1 and P _ region2 intervals, the fuel cell engine does not work. When the SOC value of the power battery is in the Soc _ s2 interval and the Pave value is in the P _ region1 interval, the fuel cell engine does not work.
When the last state of the fuel cell engine is the non-operating state and the interval time ts is detected, if the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region3, the fuel cell engine is judged to be operated at the a1 operating point according to the table 2. If the SOC value is in the SOC _ s1 range and the Pave value is in the P _ region4 range, it is determined according to table 2 that the fuel cell engine should operate at the a2 operating point. Similarly, according to the table 2, the intervals where the SOC value and the Pave value are located are detected, and other operating points corresponding to the fuel cell engine are judged.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the working point a1 of the interval A, the interval time ts is detected, and if the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region4, according to the table 1, the fuel cell engine still needs to work in the interval A, and the working point of the fuel cell engine is not changed and still stays at the working point a 1. Similarly, if the fuel cell engine works at the operating point a2 or a3 in the interval A, the interval time ts is detected, according to the table 1, the SOC value and the Pave value of the fuel cell engine are in the interval A, and the operating point of the fuel cell engine is not changed.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the working point a1 of the interval A, the interval time ts is detected, according to the table 1, when the working interval corresponding to the SOC value and the Pave value is one of the interval B or the interval C, the working point of the fuel cell engine needs to be changed, and according to the table 2, the working point of the fuel cell engine is found. If the fuel cell engine in the previous state works in the a1 operating point of the A interval, the interval time ts is detected, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region2, and the fuel cell engine operating point is changed to the b1 operating point; if the fuel cell engine in the previous state works at the operating point a1 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region3, and the operating point of the fuel cell engine is changed to the operating point b 2; if the fuel cell engine in the previous state works at the operating point a1 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region4, and the operating point of the fuel cell engine is changed to the operating point b 3; if the fuel cell engine in the previous state works at the a1 operating point in the A interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region5, the operating point of the fuel cell engine is changed into the c1 operating point; if the fuel cell engine in the previous state works at the operating point a1 of the interval A, the interval time ts is detected, the Pave value is in any one interval of P _ region5, P _ region6, P _ region7, P _ region8 and P _ region9, and the SOC value is in any one interval of Soc _ s1, Soc _ s2, Soc _ s3, Soc _ s4 and Soc _ s5, the operating point of the fuel cell engine is changed to the operating point c 1; and similarly, if the fuel cell engine works at the operating point a2 or a3 in the interval A, the interval time ts is detected, and the operating point at which the fuel cell engine needs to work is judged according to the table 1 and the table 2.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the B1 working point of the B interval, the interval time ts is detected, and if the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region5, according to the table 1, the fuel cell engine still needs to work in the B interval, and the working point of the fuel cell engine is not changed and still stays at the B1 working point. Similarly, if the fuel cell engine works at the B2 or B3 operating point of the B interval, the interval time ts is detected, according to the table 1, the SOC value and the Pave value of the fuel cell engine are in the B interval, and the operating point of the fuel cell engine is not changed.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the B1 operating point of the B interval, the interval time ts is detected, and according to the table 1, when the working interval corresponding to the SOC value and the Pave value is one of the A interval or the C interval, the working point of the fuel cell engine needs to be changed. If the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region1, and the fuel cell engine operating point is changed to the a1 operating point; if the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region1, and the fuel cell engine operating point is changed to the a2 operating point; if the fuel cell engine in the previous state works at the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2, the fuel cell engine operating point is changed to the a3 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 1; if the fuel cell engine in the previous state works at the B1 operating point in the B interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region5, the operating point of the fuel cell engine is changed into the c1 operating point; if the fuel cell engine in the previous state works at the B1 operating point of the B interval, the interval time ts is detected, and when the Pave value is in any one interval of P _ region5, P _ region6, P _ region7, P _ region8 and P _ region9, the operating point of the fuel cell engine is changed to a c1 operating point; and similarly, if the fuel cell engine works at the B2 or B3 working point of the B interval, the interval time ts is detected, and the working point of the fuel cell engine which should work is judged according to the table 4 and the table 5.
When the last state of the fuel cell engine is an operating state, if the fuel cell engine in the last state operates at the C1 operating point of the C section, the separation time ts is detected, the Pave value is in any one section of P _ region5, P _ region6, P _ region7, P _ region8 and P _ region9, and the SOC value is in any one section of Soc _ s1, Soc _ s2, Soc _ s3, Soc _ s4 and Soc _ s5, the operating point of the fuel cell engine is the C1 operating point and is not changed; if the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts is detected, the SOC value is in the Soc _ s5 interval, and the Pave value is in the P _ region5, the fuel cell engine working point is the C1 operating point, and the change is not generated.
When the last state of the fuel cell engine is an operating state, if the fuel cell engine in the last state operates at the C1 operating point of the C section, the interval time ts is detected, according to the table 1, when the operating section corresponding to the SOC value and the Pave value is one of the A section or the B section, the operating point of the fuel cell engine needs to be changed, if the fuel cell engine in the last state operates at the C1 operating point of the C section, the interval time ts is detected, the SOC value is in the Soc _ s1 section and the Pave value is in the P _ region3, the SOC value is in the Soc _ s2 section and the Pave value is in the P _ region2, the SOC value is in the Soc _ s3 section and the Pave value is in the P _ region1, the operating point of the fuel cell engine is changed to the a1 operating point; if the fuel cell engine in the previous state works in the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region1, and the fuel cell engine operating point is changed to the a2 operating point; if the fuel cell engine in the previous state works at the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2, the fuel cell engine operating point is changed to the a3 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 1; if the fuel cell engine in the previous state works in the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region2, and the fuel cell engine operating point is changed to the b1 operating point; if the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts is detected, the SOC value is in the Soc _ s3 interval and the Pave value is in the P _ region5, the SOC value is in the Soc _ s4 interval and the Pave value is in the P _ region4, the SOC value is in the Soc _ s5 interval and the Pave value is in the P _ region3, and the operating point of the fuel cell engine is changed to the b2 operating point; if the fuel cell engine in the previous state operates at the C1 operating point in the C interval, the interval time ts is detected, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region5 interval, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region4 interval, the operating point of the fuel cell engine is changed to the b3 operating point.
TABLE 1
Figure GDA0003376072440000121
TABLE 2
Figure GDA0003376072440000122
Figure GDA0003376072440000131
In tables 1 and 2-indicate that the fuel cell engine is not operating.
When the load detection device detects that the vehicle is at a medium load, the lookup tables 3 and 4 determine the working state (non-working or working) and the working state point of the fuel cell engine by detecting the SOC value of the power battery and the power Pave value required by the vehicle for the fuel cell engine.
And detecting the interval time ts, and when the SOC value of the power battery is in the SOC _ s1 interval and the Pave value is in the P _ region1 interval, not operating the fuel cell engine.
When the last state of the fuel cell engine is the non-operating state and the interval time ts is detected, if the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region2, the judgment is made according to the table 4 that the fuel cell engine should operate at the a1 operating point. If the SOC value is in the SOC _ s1 range and the Pave value is in the P _ region3 range, the fuel cell engine is judged to be operated at the a2 operating point according to the table 4. Similarly, according to the table 4, the intervals where the SOC value and the Pave value are located are detected, and other operating points corresponding to the fuel cell engine are judged.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the working point a1 of the interval A, the interval time ts is detected, and if the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region3, according to the table 3, the fuel cell engine still needs to work in the interval A, and the working point of the fuel cell engine is not changed and still stays at the working point a 1. Similarly, if the fuel cell engine operates at the operating point a2 or a3 in the interval a, the interval time ts is detected, and according to the table 3, the SOC value and the Pave value of the fuel cell engine are in the interval a, and the operating point of the fuel cell engine is not changed.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the working point a1 of the interval A, the interval time ts is detected, according to the table 3, when the working interval corresponding to the SOC value and the Pave value is one of the interval B, the interval C or the interval D, the working point of the fuel cell engine needs to be changed, and according to the table 4, the working point of the fuel cell engine is found. If the fuel cell engine in the previous state works at the operating point a1 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2, the fuel cell engine operating point is changed to the operating point b1 when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 1; if the fuel cell engine in the previous state works at the operating point a1 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region3, the fuel cell engine operating point is changed to the operating point b2 when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 2; if the fuel cell engine in the previous state works at the operating point a1 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region4, the fuel cell engine operating point is changed to the operating point b3 when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 3; if the fuel cell engine in the previous state works at the operating point a1 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region4, and the operating point of the fuel cell engine is changed to the operating point c 1; if the fuel cell engine in the previous state works at the operating point a1 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region5, and the operating point of the fuel cell engine is changed to the operating point c 2; if the fuel cell engine in the previous state works at the operating point a1 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region6, and the operating point of the fuel cell engine is changed to the operating point c 3; if the fuel cell engine in the previous state works at the a1 operating point in the A interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region7, the operating point of the fuel cell engine is changed into the d1 operating point; if the fuel cell engine in the previous state works in the a1 operating point of the A interval, the interval time ts is detected, the Pave value is in any one interval of P _ region8 and P _ region9, and the SOC value is in any one interval of Soc _ s1, Soc _ s2, Soc _ s3, Soc _ s4 and Soc _ s5, the fuel cell engine operating point is changed to the d1 operating point; and similarly, if the fuel cell engine works at the operating point a2 or a3 in the interval A, the interval time ts is detected, and the operating point at which the fuel cell engine needs to work is judged according to the table 3 and the table 4.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the B1 working point of the B interval, the interval time ts is detected, and if the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region6, according to the table 3, the fuel cell engine still needs to work in the B interval, and the working point of the fuel cell engine is not changed and still stays at the B1 working point. Similarly, if the fuel cell engine operates at the B2 or B3 operating point of the B interval, the interval time ts is detected, according to the table 3, the SOC value and the Pave value of the fuel cell engine are in the B interval, and the operating point of the fuel cell engine is not changed.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the B1 working point of the B interval, the interval time ts is detected, and according to the table 3, when the working interval corresponding to the SOC value and the Pave value is one of the A interval, the C interval or the D interval, the working point of the fuel cell engine needs to be changed. If the fuel cell engine in the previous state works at the B1 operating point in the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to a1 operating point; if the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region1, and the fuel cell engine operating point is changed to the a2 operating point; if the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region1, and the fuel cell engine operating point is changed to the a3 operating point; if the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region4, and the fuel cell engine operating point is changed to the c1 operating point; if the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region5, and the fuel cell engine operating point is changed to the c2 operating point; if the fuel cell engine in the previous state works at the B1 operating point in the B interval, the interval time ts is detected, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region6, and the operating point of the fuel cell engine is changed to the c3 operating point; if the fuel cell engine in the previous state works at the B1 operating point in the B interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region7, the operating point of the fuel cell engine is changed into the d1 operating point; if the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the Pave value is in any one interval of P _ region8 and P _ region9, and the SOC value is in any one interval of Soc _ s1, Soc _ s2, Soc _ s3, Soc _ s4 and Soc _ s5, the fuel cell engine operating point is changed to the d1 operating point; and similarly, if the fuel cell engine works at the B2 or B3 working point of the B interval, the interval time ts is detected, and the working point of the fuel cell engine which should work is judged according to the tables 3 and 4.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the C1 working point of the C interval, the interval time ts is detected, and if the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region7, according to the table 3, the fuel cell engine still needs to work in the B interval, and the working point of the fuel cell engine is not changed and still stays at the C1 working point. Similarly, if the fuel cell engine operates at the C2 or C3 operating point of the C interval, the interval time ts is detected, according to the table 3, the SOC value and the Pave value of the fuel cell engine are in the C interval, and the operating point of the fuel cell engine is not changed.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the C1 working point of the C interval, the interval time ts is detected, and according to the table 3, when the working interval corresponding to the SOC value and the Pave value is one of the A interval, the B interval or the D interval, the working point of the fuel cell engine needs to be changed. If the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to a1 operating point; if the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts is detected, the SOC value is in the Soc _ s1 interval and the Pave value is in the P _ region3, the SOC value is in the Soc _ s2 interval and the Pave value is in the P _ region2, the SOC value is in the Soc _ s3 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to the a2 operating point; if the fuel cell engine in the previous state works in the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region1, and the fuel cell engine operating point is changed to the a3 operating point; if the fuel cell engine in the previous state works at the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2, the fuel cell engine operating point is changed to the b1 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 1; if the fuel cell engine in the previous state works at the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region3, the fuel cell engine operating point is changed to the b2 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 2; if the fuel cell engine in the previous state works at the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region4, the fuel cell engine operating point is changed to the b3 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 3; if the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region7, the operating point of the fuel cell engine is changed into the d1 operating point; if the fuel cell engine in the previous state works in the C1 operating point of the C interval, the interval time ts is detected, the Pave value is in any one interval of P _ region8 and P _ region9, and the SOC value is in any one interval of Soc _ s1, Soc _ s2, Soc _ s3, Soc _ s4 and Soc _ s5, the fuel cell engine operating point is changed into the d1 operating point; and similarly, if the fuel cell engine works at the C2 or C3 working point of the C interval, the interval time ts is detected, and the working point of the fuel cell engine which should work is judged according to the tables 3 and 4.
When the last state of the fuel cell engine is an operating state, if the fuel cell engine in the last state operates at the D1 operating point of the D section, the separation time ts is detected, the Pave value is in any one of the P _ region8 and the P _ region9, and the SOC value is in any one of the Soc _ s1, Soc _ s2, Soc _ s3, Soc _ s4 and Soc _ s5, the operating point of the fuel cell engine is the c1 operating point and does not change; if the fuel cell engine in the previous state works at the D1 working point in the D interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region7, the working point of the fuel cell engine is the D1 working point, and the working point is not changed;
when the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the D1 working point of the D interval, the interval time ts is detected, and according to the table 3, when the working interval corresponding to the SOC value and the Pave value is one of the A interval, the B interval or the C interval, the working point of the fuel cell engine needs to be changed. If the fuel cell engine in the previous state works at the D1 operating point in the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to a1 operating point; if the fuel cell engine in the previous state works at the D1 operating point in the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to the a2 operating point; if the fuel cell engine in the previous state works in the D1 operating point of the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval, the Pave value is in the P _ region4 interval, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region3 interval, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region2 interval, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region1 interval, and the fuel cell engine operating point is changed to the a3 operating point; if the fuel cell engine in the previous state works at the D1 operating point of the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region5 interval, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region4 interval, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3 interval, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2 interval, the fuel cell engine operating point is changed to the b1 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region1 interval; if the fuel cell engine in the previous state works at the D1 operating point of the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region6 interval, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region5 interval, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region4 interval, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region3 interval, the fuel cell engine operating point is changed to the b2 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region2 interval; if the fuel cell engine in the previous state works at the D1 operating point of the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region7 interval, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region6 interval, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region5 interval, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region4 interval, the fuel cell engine operating point is changed to the b3 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region3 interval; if the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region4, and the fuel cell engine operating point is changed to the c1 operating point; if the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region5, and the fuel cell engine operating point is changed to the c2 operating point; if the fuel cell engine is operated at the B1 operating point of the B interval in the last state, the interval time ts is detected, the operating point of the fuel cell engine is changed to the c3 operating point when the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region7, and the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 6.
TABLE 3
Figure GDA0003376072440000181
TABLE 4
Figure GDA0003376072440000182
In tables 3 and 4-indicate that the fuel cell engine is not operating.
When the load detection device detects that the vehicle is in heavy load, the working state (non-working or working) and the working state point of the fuel cell engine are determined by detecting the SOC value of the power battery and the Pave value of the power required by the vehicle for the fuel cell engine through lookup tables 5 and 6;
when the last state of the fuel cell engine is the non-operating state and the interval time ts is detected, if the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region2, the judgment is made according to the table 6 that the fuel cell engine should operate at the a2 operating point. If the SOC value is in the SOC _ s1 range and the Pave value is in the P _ region3 range, it is determined according to table 6 that the fuel cell engine should operate at the b3 operating point. Similarly, according to the table 6, the intervals where the SOC value and the Pave value are located are detected, and other operating points corresponding to the fuel cell engine are judged.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the working point a2 of the interval A, the interval time ts is detected, and if the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region1, according to the table 5, the fuel cell engine still needs to work in the interval A, and the working point of the fuel cell engine is not changed and still stays at the working point a 2. Similarly, if the fuel cell engine works at the operating point a3 in the interval a, the interval time ts is detected, and according to the table 5, the SOC value and the Pave value of the fuel cell engine are in the interval a, and the operating point of the fuel cell engine is not changed.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the working point a2 of the interval A, the interval time ts is detected, according to the table 5, when the working interval corresponding to the SOC value and the Pave value is one of the interval B, the interval C, the interval D or the interval E, the working point of the fuel cell engine needs to be changed, and according to the table 6, the working point of the fuel cell engine is found. If the fuel cell engine in the previous state works at the operating point a2 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to the operating point b 1; if the fuel cell engine in the previous state works at the operating point a2 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2, the fuel cell engine operating point is changed to the operating point b2 when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 1; if the fuel cell engine in the previous state works at the operating point a2 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2, the fuel cell engine operating point is changed to the operating point b3 when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 1; if the fuel cell engine in the previous state works at the operating point a2 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region3, the fuel cell engine operating point is changed to the operating point c1 when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 2; if the fuel cell engine in the previous state works at the operating point a2 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region4, the fuel cell engine operating point is changed to the operating point c2 when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 3; if the fuel cell engine in the previous state works at the operating point a2 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region5, the fuel cell engine operating point is changed to the operating point c3 when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 4; if the fuel cell engine in the previous state works at the operating point a2 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region6, the fuel cell engine operating point is changed to the operating point d1 when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 5; if the fuel cell engine in the previous state works at the operating point a2 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region6, and the operating point of the fuel cell engine is changed to the operating point d 2; if the fuel cell engine in the previous state works at the operating point a2 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region7, and the operating point of the fuel cell engine is changed to the operating point d 3; if the fuel cell engine in the previous state works at the operating point a2 in the interval A, the interval time ts is detected, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region8, the Pave value is in the P _ region9, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region8, and the operating point of the fuel cell engine is changed to the operating point e 1; if the fuel cell engine in the previous state works at the a2 operating point in the A interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region9, the operating point of the fuel cell engine is changed into the e2 operating point; similarly, if the fuel cell engine operates at the operating point a3 in the interval a, the interval time ts is detected, and the operating point at which the fuel cell engine should operate is determined according to tables 5 and 6.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the B1 working point of the B interval, the interval time ts is detected, and if the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region4, according to the table 5, the fuel cell engine still needs to work in the B interval, and the working point of the fuel cell engine is not changed and still stays at the B1 working point. Similarly, if the fuel cell engine operates at the B2 or B3 operating point of the B interval, the interval time ts is detected, according to the table 5, the SOC value and the Pave value of the fuel cell engine are in the B interval, and the operating point of the fuel cell engine is not changed.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the B1 working point of the B interval, the interval time ts is detected, according to the table 5, when the working interval corresponding to the SOC value and the Pave value is one of the A interval, the C interval, the D interval or the E interval, the working point of the fuel cell engine needs to be changed, and according to the table 6, the working point of the fuel cell engine is found. If the fuel cell engine in the previous state works at the B1 operating point in the B interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s1 interval, and the Pave value is in the P _ region1, the operating point of the fuel cell engine is changed into the a2 operating point; if the fuel cell engine in the previous state works at the B1 operating point in the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to a3 operating point; if the fuel cell engine in the previous state works at the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region3, the fuel cell engine operating point is changed to the c1 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 2; if the fuel cell engine in the previous state works at the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region4, the fuel cell engine operating point is changed to the c2 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 3; if the fuel cell engine in the previous state works at the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region5, the fuel cell engine operating point is changed to the c3 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 4; if the fuel cell engine in the previous state works at the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region6, the fuel cell engine operating point is changed to the d1 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 5; if the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region6, and the fuel cell engine operating point is changed to the d2 operating point; if the fuel cell engine in the previous state works in the B1 operating point of the B interval, the interval time ts is detected, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region7, and the fuel cell engine operating point is changed to the d3 operating point; if the fuel cell engine in the previous state works at the B1 operating point in the B interval, the interval time ts is detected, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region8, and the operating point of the fuel cell engine is changed to the e1 operating point; if the fuel cell engine in the previous state works at the B1 operating point in the B interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region9, the operating point of the fuel cell engine is changed into the e2 operating point; and similarly, if the fuel cell engine works at the working points B2 and B3 in the B interval, the interval time ts is detected, and the working point at which the fuel cell engine needs to work is judged according to the tables 5 and 6.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the C1 working point of the C interval, the interval time ts is detected, and if the SOC value is in the Soc _ s1 interval and the Pave value is in the P _ region6, according to the table 5, the fuel cell engine still needs to work in the C interval, and the working point of the fuel cell engine is not changed and still stays at the C1 working point. Similarly, if the fuel cell engine operates at the C2 or C3 operating point of the C interval, the interval time ts is detected, according to the table 5, the SOC value and the Pave value of the fuel cell engine are in the C interval, and the operating point of the fuel cell engine is not changed.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the C1 working point of the C interval, the interval time ts is detected, according to the table 5, when the working interval corresponding to the SOC value and the Pave value is one of the A interval, the B interval, the D interval or the E interval, the working point of the fuel cell engine needs to be changed, and according to the table 6, the working point of the fuel cell engine is found. If the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s1 interval, and the Pave value is in the P _ region1, the operating point of the fuel cell engine is changed into the a2 operating point; if the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to a3 operating point; if the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts is detected, the SOC value is in the Soc _ s1 interval and the Pave value is in the P _ region3, the SOC value is in the Soc _ s2 interval and the Pave value is in the P _ region2, the SOC value is in the Soc _ s3 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to the b1 operating point; if the fuel cell engine in the previous state works at the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2, the fuel cell engine operating point is changed to the b2 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 1; if the fuel cell engine in the previous state works at the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2, the fuel cell engine operating point is changed to the b3 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 1; if the fuel cell engine in the previous state works at the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region5, and the fuel cell engine operating point is changed to the d1 operating point; if the fuel cell engine in the previous state works in the C1 operating point of the C interval, the interval time ts is detected, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region6, and the fuel cell engine operating point is changed to the d2 operating point; if the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts is detected, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region7, and the fuel cell engine operating point is changed to the d3 operating point; if the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts is detected, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region8, and the operating point of the fuel cell engine is changed to the e1 operating point; if the fuel cell engine in the previous state works at the C1 operating point in the C interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region9, the operating point of the fuel cell engine is changed into the e2 operating point; and similarly, if the fuel cell engine works at the working points C2 and C3 in the C interval, the interval time ts is detected, and the working point at which the fuel cell engine needs to work is judged according to the tables 5 and 6.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the working point D1 in the D interval, the interval time ts is detected, and if the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region9, according to the table 5, the fuel cell engine still needs to work in the D interval, and the working point of the fuel cell engine is not changed and still stays at the working point D1. Similarly, if the fuel cell engine works at the operating point D2 or D3 in the D interval, the interval time ts is detected, according to the table 5, the SOC value and the Pave value of the fuel cell engine are in the D interval, and the operating point of the fuel cell engine is not changed.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the D1 working point of the D interval, the interval time ts is detected, according to the table 5, when the working interval corresponding to the SOC value and the Pave value is one of the A interval, the B interval, the C interval or the E interval, the working point of the fuel cell engine needs to be changed, and according to the table 6, the working point of the fuel cell engine is found. If the fuel cell engine in the previous state works at the D1 operating point in the D interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s1 interval, and the Pave value is in the P _ region1, the operating point of the fuel cell engine is changed into the a2 operating point; if the fuel cell engine in the previous state works at the D1 operating point in the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to a3 operating point; if the fuel cell engine in the previous state works at the D1 operating point in the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to the b1 operating point; if the fuel cell engine in the previous state works at the D1 operating point of the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region4 interval, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region3 interval, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3 interval, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2 interval, the fuel cell engine operating point is changed to the b2 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region1 interval; if the fuel cell engine in the previous state works at the D1 operating point of the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region5 interval, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region4 interval, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3 interval, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2 interval, the fuel cell engine operating point is changed to the b3 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region1 interval; if the fuel cell engine in the previous state works at the D1 operating point of the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region6 interval, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region5 interval, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region4 interval, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region3 interval, the fuel cell engine operating point is changed to the c1 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region2 interval; if the fuel cell engine in the previous state works at the D1 operating point of the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region7 interval, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region6 interval, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region5 interval, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region4 interval, the fuel cell engine operating point is changed to the c2 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region3 interval; if the fuel cell engine in the previous state works at the D1 operating point of the D interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region8 interval, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region7 interval, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region6 interval, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region5 interval, the fuel cell engine operating point is changed to the c3 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region4 interval; if the fuel cell engine in the previous state works at the D1 operating point in the D interval, the interval time ts is detected, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region8, and the operating point of the fuel cell engine is changed to the e1 operating point; if the fuel cell engine in the previous state works at the D1 working point in the D interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s5 interval, and the Pave value is in the P _ region9, the working point of the fuel cell engine is changed into the e2 working point; and similarly, if the fuel cell engine works at the working points D2 and D3 in the D interval, the interval time ts is detected, and the working point at which the fuel cell engine needs to work is judged according to the tables 5 and 6.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the working point E1 of the interval E, the interval time ts is detected, and if the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region9, according to the table 5, the fuel cell engine still needs to work in the interval E, and the working point of the fuel cell engine is not changed and still stays at the working point E1. Similarly, if the fuel cell engine operates at the operating point E2 or E3 in the interval E, the interval time ts is detected, and according to the table 5, the SOC value and the Pave value of the fuel cell engine are in the interval E, and the operating point of the fuel cell engine is not changed.
When the last state of the fuel cell engine is the working state, if the fuel cell engine in the last state works at the E1 working point of the E interval, the interval time ts is detected, according to the table 5, when the working interval corresponding to the SOC value and the Pave value is one of the A interval, the B interval, the C interval or the D interval, the working point of the fuel cell engine needs to be changed, and according to the table 6, the working point of the fuel cell engine is found. If the fuel cell engine in the previous state works at the E1 operating point in the E interval, the interval time ts detection is carried out, the SOC value is in the SOC _ s1 interval, and the Pave value is in the P _ region1, the operating point of the fuel cell engine is changed into the a2 operating point; if the fuel cell engine in the previous state works at the E1 operating point in the E interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region1, and the operating point of the fuel cell engine is changed to a3 operating point; if the fuel cell engine in the previous state works at the E1 operating point of the E interval, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region2, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region1, and the fuel cell engine operating point is changed to the b1 operating point; if the fuel cell engine in the previous state works at the E1 operating point of the interval E, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2, the fuel cell engine operating point is changed to the b2 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 1; if the fuel cell engine in the previous state works at the E1 operating point of the interval E, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region3, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region2, the fuel cell engine operating point is changed to the b3 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 1; if the fuel cell engine in the previous state works at the E1 operating point of the interval E, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region4, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region3, the fuel cell engine operating point is changed to the c1 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 2; if the fuel cell engine in the previous state works at the E1 operating point of the interval E, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region5, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region4, the fuel cell engine operating point is changed to the c2 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 3; if the fuel cell engine in the previous state works at the E1 operating point of the interval E, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region5, the fuel cell engine operating point is changed to the c3 operating point when the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region 4; if the fuel cell engine in the previous state works at the E1 operating point of the interval E, the interval time ts is detected, the SOC value is in the SOC _ s1 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region6, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region5, and the fuel cell engine operating point is changed to the d1 operating point; if the fuel cell engine in the previous state works in the E1 operating point of the E interval, the interval time ts is detected, the SOC value is in the SOC _ s2 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region7, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region6, and the fuel cell engine operating point is changed to the d2 operating point; if the fuel cell engine in the previous state works at the E1 operating point of the E interval, the interval time ts is detected, the SOC value is in the SOC _ s3 interval and the Pave value is in the P _ region9, the SOC value is in the SOC _ s4 interval and the Pave value is in the P _ region8, the SOC value is in the SOC _ s5 interval and the Pave value is in the P _ region7, and the fuel cell engine operating point is changed to the d3 operating point; and similarly, if the fuel cell engine works at the working points E2 and E3 in the interval E, the interval time ts is detected, and the working point of the fuel cell engine which should work is judged according to the tables 5 and 6.
TABLE 5
Figure GDA0003376072440000261
TABLE 6
Figure GDA0003376072440000262
In tables 5 and 6-indicate that the fuel cell engine is not operating.

Claims (1)

1. An energy control method of a fuel cell engine comprises the following steps:
the power battery and the fuel cell engine jointly supply power to the vehicle, and the energy balance equation of the vehicle in the driving process is as follows:
Pvehicle＝Pattachment+Pmotor＝Pcell+Pfc
wherein, PvehicleFor the power demand of the vehicle, PattachmentPower consumed for auxiliary appliances, PmotorPower consumed by the motor for driving the vehicle, PcellPower delivered to the power cell; pfcIs the power of the fuel cell engine;
dividing a fuel cell engine power section into F, A, B, C, D and E six sections according to a fuel cell engine operation performance curve, power Peffmax at a maximum efficiency point of the fuel cell engine, power Peff 0.9 Peffmax, power section F in a region between 0 and Peff, rated power Pmax at the fuel cell engine, section A in a region between Peff and Peff +0.2 (Pmax-Peff), section B in a region between Peff +0.2 (Pmax-Peff) and Peff +0.4 (Pmax-Peff), section C in a region between Peff +0.4 (Pmax-Peff) and Peff +0.6 (Pmax-Peff), and section D in a region between Pmax +0.6 (Pmax-Peff) and Peff +0.8 (Pmax-Peff), the interval E is a region between the fuel cell engine power Peff +0.8 × (Pmax-Peff) and Pmax;
the efficiency is greatly changed along with the power in an F section, the control is not facilitated, the fuel cell engine does not use the power of the F section, the fuel cell engine does not work or works in A, B, C, D and E five sections in the vehicle running process, three operating points are respectively arranged in each of A, B, C, D and E five sections, the a1 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff)/4, the a2 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff)/2, the a3 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff) x 3/4, the b1 operating point corresponds to an operating point with the power of the fuel cell engine being Peff +0.15 (Pmax-Peff) +0.2 (Pmax-Peff)/4, the b2 operating point corresponds to a working point of the fuel cell engine power Peff +0.15 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, the b3 operating point corresponds to a working point of the fuel cell engine power Peff +0.15 x (Pmax-Peff) +0.2 x (Pmax-Peff) × 3/4, the c1 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x (Pmax-Peff)/4, the c2 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, the c2 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, and the c 382 operating point corresponds to a working point of the fuel cell engine power Peff +0.35 x (Pmax-Peff) +0.2 x) (Pmax-Peff)/3, the working point corresponds to a working point of the fuel cell engine power Peff (Pmax-Peff) + 0.387 Pmax + 0.55-Peff) + Peff), the d2 operating point corresponds to an operating point of the fuel cell engine power Peff +0.55 x (Pmax-Peff) +0.2 x (Pmax-Peff)/2, the d3 operating point corresponds to an operating point of the fuel cell engine power Peff +0.55 x (Pmax-Peff) +0.2 x (Pmax-Peff) × 3/4, the e1 operating point corresponds to an operating point of the fuel cell engine power Peff +0.75 x (Pmax-Peff) +0.25 x (Pmax-Peff)/4, the e2 operating point corresponds to an operating point of the fuel cell engine power Peff +0.75 x (Pmax-Peff) +0.25 x (Pmax-Peff)/2, and the e3 operating point corresponds to an operating point of the fuel cell engine power Peff +0.75 x (Pmax-Peff) +0.25 x (Pmax-Peff) × 3/4;
the commercial vehicle runs at the same speed, the more the load is carried, the larger the power consumption speed of the load is, in order to avoid the situation that the SOC of the power battery is reduced too fast and ensure that the SOC value of the battery is in a normal range, different control strategies are respectively set according to light load, medium load and heavy load, the efficiency of the engine power of the fuel battery is reduced along with the increase of the power when the engine power works in an interval from A to E, the efficiency is the highest in the interval from A, the efficiency is the lowest in the interval from E, and the control strategy considers that the working condition point close to the interval from A is preferentially selected;
the load of the commercial vehicle is judged through a load detection device and divided into light load, medium load and heavy load, and when the load detection device detects that the load is 0-20% of the maximum load of the vehicle, the load is judged to be light load; when the load detection device detects that the load is between 20% and 60% of the maximum load of the vehicle, the load is judged to be the medium load; when the load detection device detects that the load is between 60% and 100% of the maximum load of the vehicle, the vehicle is judged to be heavy;
the rated power output by the fuel cell engine is Pmax, the region between the power 0 and the Pmax is divided into 9 sections, and the value of the set power point P1 is 0.11 multiplied by Pmax; the value of the power point P2 is set to 0.22 × Pmax; the value of the set power point P3 is 0.33 × Pmax; the value of the set power point P4 is 0.44 × Pmax; the value of the set power point P5 is 0.55 × Pmax; the value of the set power point P6 is 0.66 × Pmax; the value of the set power point P7 is 0.77 × Pmax; the value of the set power point P8 is 0.88 × Pmax;
eight power points of P1, P1 and P1 are set in sequence from 0 to Pmax, the power is a region P _ region1 between points 0 and P1, the power is a region P _ region1 between points P1 and P1, the power is a region P _ region1 between points P1 and P1, and the power is a region P _ region Pmax 1 between points P1 and P1;
dividing the SOC value of the power battery into seven stages according to 0-100 percent: setting the SOC value of the power battery as Soc _ s0 when the SOC value is between 100% and 80%; setting the state of charge SOC value of the power battery to be Soc _ s1 when the SOC value is between 80% and 70%; setting the state of charge SOC value of the power battery as Soc _ s2 when the SOC value is between 70% and 60%; setting the SOC value of the power battery as Soc _ s3 when the SOC value is between 60% and 50%; setting the SOC value of the power battery as Soc _ s4 when the SOC value is between 50% and 40%; setting the SOC value of the power battery as Soc _ s5 when the SOC value is between 40% and 30%; setting the SOC value of the power battery as Soc _ min when the SOC value is between 30% and 0%;
the power demand of the vehicle on the fuel cell engine is obtained by statistical calculation according to the average consumed power of the vehicle in a period of time, the consumed power of the vehicle is obtained by a power detection device, and the power Pave required by the vehicle on the fuel cell engine is calculated according to the following formula:
Pave＝[Pave1×(t0-t1)+Pave2×(t1-t2)+Pave3×(t2-t3)]/(t0-t3)
during running of the vehicle, t0 is the current time point, t1 is the time point before t0, t2 is the time point before t1, t3 is the time point before t2, Pave1 is the average power between t0 and t1, Pave2 is the average power between t1 and t2, and Pave3 is the average power between t2 and t 3; setting the difference values of t0-t1, t1-t2 and t2-t3 as fixed values, setting the difference values of t0-t1 as 1min, setting the difference values of t1-t2 as 5min and setting the difference values of t2-t3 as 10min in the running process of the vehicle;
during the running of the vehicle, the fuel cell engine can be in a non-operating state, or one of 15 operating state points in A, B, C, D, E five power intervals;
when the load detection device detects that the vehicle is in light load, the working state and the working state point of the fuel cell engine are judged by detecting the SOC value of the power battery and the Pave value of the power required by the vehicle for the fuel cell engine and looking up the table 1 and the table 2; the fuel cell engine has two working states of no work or work;
when the current state of the fuel cell engine is in an inoperative state, judging the next state or power interval of the fuel cell engine according to the SOC value and the Pave value in table 1, if the fuel cell engine still needs to be in the inoperative state, the fuel cell engine continues to be stopped, if the next state of the fuel cell engine is in A, B, C, D, E power intervals, selecting the power interval in which the fuel cell engine needs to be in according to the table 1, and selecting an operating state point in the corresponding power interval according to the table 5;
if the current state of the fuel cell engine is at a certain working condition point in the A, B, C, D, E power interval, judging the next power interval of the fuel cell engine according to the table 1 by the SOC value and the Pave value, if the power interval of the fuel cell engine is not changed, the working state point of the fuel cell engine is not changed, and if the power interval of the fuel cell engine needs to be changed, selecting the working state point in the corresponding power interval according to the table 2;
TABLE 1
Figure FDA0003376072430000031
TABLE 2
Figure FDA0003376072430000032
In tables 1 and 2-indicate that the fuel cell engine is not operating;
when the load detection device detects that the vehicle is in a medium load, the working state and the working state point of the fuel cell engine are determined by looking up a table 3 and a table 4 through detecting the SOC value of the power battery and the Pave value of the power required by the vehicle for the fuel cell engine; the fuel cell engine has two working states of no work or work;
when the current state of the fuel cell engine is in an inoperative state, judging the next state or power interval of the fuel cell engine according to the SOC value and the Pave value in table 3, if the fuel cell engine still needs to be in the inoperative state, the fuel cell engine continues to be stopped, if the next state of the fuel cell engine is in A, B, C, D, E power intervals, selecting the power interval in which the fuel cell engine needs to be in according to the table 3, and selecting the working state point in the corresponding power interval according to the table 4;
if the current state of the fuel cell engine is at a certain working state point in the A, B, C, D, E power interval, judging the next power interval of the fuel cell engine according to the table 3 by the SOC value and the Pave value, if the power interval of the fuel cell engine is not changed, the working state point of the fuel cell engine is not changed, if the power interval of the fuel cell engine needs to be changed, selecting the working state point in the corresponding power interval according to the table 4;
TABLE 3
Figure FDA0003376072430000041
TABLE 4
Figure FDA0003376072430000042
In tables 3 and 4-indicate that the fuel cell engine is not operating;
when the load detection device detects that the vehicle is in heavy load, the working state and the working state point of the fuel cell engine are determined by detecting the SOC value of the power battery and the Pave value of the power required by the vehicle for the fuel cell engine through lookup tables 5 and 6; the fuel cell engine has two working states of no work or work;
when the current state of the fuel cell engine is in an inoperative state, judging the next state or power interval of the fuel cell engine according to the SOC value and the Pave value in table 5, if the fuel cell engine still needs to be in the inoperative state, the fuel cell engine continues to be stopped, if the next state of the fuel cell engine is in A, B, C, D, E power intervals, selecting the power interval in which the fuel cell engine needs to be in according to the table 5, and selecting the working state point in the corresponding power interval according to the table 6;
when the current state of the fuel cell engine is in a certain working state in A, B, C, D, E power intervals, judging the next power interval of the fuel cell engine according to the SOC value and the Pave value according to the table 5, if the power interval of the fuel cell engine is not changed, the working state point of the fuel cell engine is not changed, and if the power interval of the fuel cell engine needs to be changed, selecting the working state point in the corresponding power interval according to the table 6;
TABLE 5
Figure FDA0003376072430000051
TABLE 6
Figure FDA0003376072430000052
In tables 5 and 6-indicate that the fuel cell engine is not operating.
CN201910480165.6A 2019-06-04 2019-06-04 Energy control method of fuel cell engine Active CN110281817B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910480165.6A CN110281817B (en) 2019-06-04 2019-06-04 Energy control method of fuel cell engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910480165.6A CN110281817B (en) 2019-06-04 2019-06-04 Energy control method of fuel cell engine

Publications (2)

Publication Number Publication Date
CN110281817A CN110281817A (en) 2019-09-27
CN110281817B true CN110281817B (en) 2022-03-22

Family

ID=68003192

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910480165.6A Active CN110281817B (en) 2019-06-04 2019-06-04 Energy control method of fuel cell engine

Country Status (1)

Country Link
CN (1) CN110281817B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111137177B (en) * 2019-12-31 2021-08-24 上海捷氢科技有限公司 Energy control method and device for fuel cell vehicle, storage medium, and electronic device
CN111216596A (en) * 2020-01-13 2020-06-02 一汽解放汽车有限公司 Fuel cell whole vehicle energy management method and device, vehicle and storage medium
CN111497678B (en) * 2020-03-13 2021-11-05 北汽福田汽车股份有限公司 Power generation control method and device for fuel cell engine, processor and vehicle
CN111775774A (en) * 2020-06-23 2020-10-16 西安法士特汽车传动有限公司 Fuel cell control method for hydrogen fuel cell vehicle
CN111806304B (en) * 2020-06-23 2021-09-03 同济大学 Vehicle fuel cell-lithium ion capacitor composite power supply system and control method
CN113829955B (en) * 2020-06-24 2023-07-14 北京亿华通科技股份有限公司 Energy management method for fuel cell vehicle
CN111717077B (en) * 2020-06-28 2022-08-23 重庆长安新能源汽车科技有限公司 Energy distribution method for vehicle fuel cell
CN114312489B (en) * 2020-09-30 2023-11-17 北京亿华通科技股份有限公司 Fuel cell engine power control method
CN112959922B (en) * 2021-02-05 2022-09-23 浙江吉利控股集团有限公司 Control method, control device and computer storage medium
CN114142533B (en) * 2021-11-30 2024-03-05 中船动力研究院有限公司 Energy scheduling method and device for offshore floating hydrogen plant
CN115991099B (en) * 2023-03-23 2023-06-02 成都壹为新能源汽车有限公司 Fuel cell system power control method and system based on state control
CN116525893B (en) * 2023-06-20 2024-02-23 广东云韬氢能科技有限公司 Control method for prolonging service life of fuel cell system
CN116572933B (en) * 2023-07-07 2023-09-15 中国第一汽车股份有限公司 Engine control method, device, equipment and storage medium

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4624272B2 (en) * 2006-02-03 2011-02-02 本田技研工業株式会社 Fuel cell vehicle control method and fuel cell vehicle
CN100581867C (en) * 2006-12-28 2010-01-20 奇瑞汽车股份有限公司 Fuel battery power system of mixed power vehicle
JP6222049B2 (en) * 2014-11-14 2017-11-01 トヨタ自動車株式会社 FUEL CELL SYSTEM, FUEL CELL VEHICLE, AND METHOD FOR CONTROLLING FUEL CELL SYSTEM
CN107310420B (en) * 2017-07-21 2019-11-26 中国第一汽车股份有限公司 Small-power fuel cell car and its control system and control method
CN108110282A (en) * 2017-11-30 2018-06-01 中国第汽车股份有限公司 Fuel battery engines Poewr control method
CN109334476B (en) * 2018-09-29 2020-09-29 潍柴动力股份有限公司 Fuel cell automobile control system and control method

Also Published As

Publication number Publication date
CN110281817A (en) 2019-09-27

Similar Documents

Publication Publication Date Title
CN110281817B (en) Energy control method of fuel cell engine
CN107310420B (en) Small-power fuel cell car and its control system and control method
JP5194834B2 (en) VEHICLE ELECTRIC SYSTEM CONTROL DEVICE AND CONTROL METHOD
CN108790938B (en) Motor torque control method for different driving modes
EP2158632B1 (en) Fuel cell system and method for operating the same
CN111152690A (en) Energy control method and system for multi-power-supply time-varying characteristic of fuel cell vehicle
WO2018068569A1 (en) Power source for electric vehicle and power source selection method
CN111347940A (en) Energy management control method for electric-electric hybrid fuel cell automobile
CN113879181A (en) Real-time energy management control method capable of prolonging service life of fuel cell
KR20170115628A (en) Method for controlling start of fuel cell vehicle
JP2010226776A (en) Device and method for controlling power supply circuit
CN110957506A (en) Fuel cell system and standby control method thereof
CN111775724A (en) Method for selecting and switching working points of range extender
US10714770B2 (en) Fuel cell system
CN111016878B (en) Single-motor hybrid power system power battery electric quantity balance management system and method
CN104163086B (en) Integral new-energy passenger air conditioning control method
CN107660246B (en) Control device and control method for construction machine
CN112026743A (en) Energy management method and device for series hybrid electric vehicle and hybrid electric vehicle
CN113276830B (en) Control method of intelligent vehicle-mounted direct current power generation system
CN111042935A (en) Intelligent power generation control system and method in vehicle running process
JP4330542B2 (en) Cogeneration system
CN114123463B (en) Photovoltaic water pump control method, system and device
CN111480448B (en) Header hybrid-action lifting system and method and harvester
CN110014821B (en) Novel hydrogen energy automobile secondary cooling system
CN104963374A (en) Method for automatically controlling working modes of excavator

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant