CN117799418A - Hybrid power tractor driving system and control method thereof - Google Patents

Hybrid power tractor driving system and control method thereof Download PDF

Info

Publication number
CN117799418A
CN117799418A CN202311793335.9A CN202311793335A CN117799418A CN 117799418 A CN117799418 A CN 117799418A CN 202311793335 A CN202311793335 A CN 202311793335A CN 117799418 A CN117799418 A CN 117799418A
Authority
CN
China
Prior art keywords
output
motor
power
gear
shaft
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.)
Pending
Application number
CN202311793335.9A
Other languages
Chinese (zh)
Inventor
郝庆军
许人义
王鹤
陆中华
唐凤坤
徐啸天
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.)
Capotech Suzhou Co ltd
Original Assignee
Capotech Suzhou 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 Capotech Suzhou Co ltd filed Critical Capotech Suzhou Co ltd
Priority to CN202311793335.9A priority Critical patent/CN117799418A/en
Publication of CN117799418A publication Critical patent/CN117799418A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/24—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • B60W20/14—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion in conjunction with braking regeneration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2300/00—Indexing codes relating to the type of vehicle
    • B60W2300/15—Agricultural vehicles
    • B60W2300/152—Tractors

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention provides a hybrid power tractor driving system and a control method thereof, which are characterized in that: comprises a power system (1), a power generation system (2), a control system (3) and an energy storage system (4); the power generation system (2) and the energy storage system (4) are respectively connected with the power system (1) through the control system (3) and perform power output; the efficiency interval of the driving motor can be widened, the running efficiency of the system can be improved, the power requirement of the tractor under various complex running conditions can be met, and the weight of the driving system can be reduced through the power coupling and the power decoupling of the double motors; and the double-motor power confluence driving system can provide a plurality of driving modes and keep the motor to work in a high-efficiency area under a heavy load, thereby improving the working efficiency of the motor and obtaining better economy.

Description

Hybrid power tractor driving system and control method thereof
Technical Field
The invention relates to the technical field of hybrid power tractors, in particular to a hybrid power tractor driving system and a control method thereof.
Background
In the prior art, a power system of a tractor mainly comprises a diesel engine and a multi-gear inlet gearbox, the energy efficiency of the diesel engine is relatively low, most of energy is converted into heat energy, and only a small part of energy is converted into mechanical energy; meanwhile, the combustion of the diesel engine can generate waste gas and noise, and certain pollution can be caused to the environment; in addition, in order to meet the requirements of different working conditions on load intensity and running speed, the traditional mechanical transmission tractor is generally provided with more gears, so that the driving operation is complicated, and the manufacturing cost is high; and is also provided with
Gear shifting in the tractor gearboxes at the present stage is realized through a wet type double-clutch gearbox, and the gearboxes mainly depend on import and have higher price.
In recent years, electric drive technology has been rapidly developed, but the application in the field of agricultural machinery is still limited, and the application is mainly limited by specific operation working conditions of a tractor, power density of electrical equipment and endurance capacity of a storage battery. The main operation tasks of the agricultural tractor comprise field operation and road transportation, in the field operation, larger torque is required to avoid the wheel slipping under the condition of poor contact, and in the transportation operation, a motor is required to have higher rotating speed, so that the motor torque and rotating speed range are very wide, and certain difficulty is brought to the layout of power elements of the tractor; at the same time, a speed change system which is enough to match a high-speed motor is not yet available so as to meet the requirements of an agricultural tractor.
In addition, the pure electric scheme is difficult to meet the complex operation conditions of the tractor, for example, the agricultural machinery can be used only in spring cultivation and autumn cultivation for 4-5 months in one year, most of the agricultural machinery such as the other time tractors are in an idle state, and during the use period, the agricultural machinery needs to continuously work for about 13 hours every day, and the pure electric scheme has the problems that the operation is difficult, the charging time is insufficient and the operation cannot be performed under cold conditions.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the invention provides a hybrid power tractor driving system and a control method thereof.
The technical scheme provided by the invention is as follows:
a hybrid tractor drive system characterized by: the system comprises a power system, a power generation system, a control system and an energy storage system; the power generation system and the energy storage system are respectively connected with the power system through the control system and output power; wherein the method comprises the steps of
The power system comprises a first motor and a second motor, and output shafts of the first motor and the second motor are respectively connected with a power takeoff and an output end through a gearbox;
the power generation system comprises an engine, an output shaft of the engine is connected with a first power generator and a second power generator through a torque shock absorber and a speed increasing box, and output ends of the first power generator and the second power generator are connected with the first motor and the second motor through a control system;
the control system comprises a vehicle controller, a first motor controller, a second motor controller, a generator controller, a gearbox controller and a battery management system, wherein the first motor controller and the second motor controller are respectively connected with a first motor and a second motor correspondingly;
the energy storage system includes a power battery.
As a further preferable implementation mode of the invention, the first motor is a PTO motor, the second motor is a walking motor, and the first motor and the second motor are high-speed motors.
As a further preferred embodiment of the present invention, the transmission includes:
the output shaft of the first motor is fixedly connected with the first input shaft;
the output shaft of the second motor is fixedly connected with the second input shaft;
the first input shaft is selectively connected with the first intermediate shaft through a first gear shifting device;
the first input shaft and the second input shaft are connected with the first intermediate shaft through an input gear pair;
the first output shaft is connected with the first output shaft through a first output gear pair, and the first output shaft is connected with the power takeoff;
the second output shaft is connected with the second intermediate shaft through a second output gear pair, the second output shaft is connected with an output end, and a second gear shifting device is further arranged on the second output shaft so as to be selectively connected with gears of the second output gear pairs on two sides.
As a further preferred embodiment of the present invention, the input gear pair includes a first input driving gear, a second input driving gear and an input driven gear, and the first input driving gear and the second input driving gear are respectively meshed with the input driven gear correspondingly; wherein,
the first input driving gear is fixedly connected with the first input shaft;
the second input driving gear is fixedly connected with the second input shaft;
the input driven gear is fixedly connected with the intermediate shaft.
As a further preferable embodiment of the present invention, the first output gear pair includes a first output driving gear and a first output driven gear which are correspondingly meshed; the first output driving gear is fixed on the first intermediate shaft, and the first output driven gear is fixed on the first output shaft.
As a further preferable embodiment of the present invention, the second output gear pair includes a second output driving gear and a second output driven gear, and a third output driving gear and a third output driven gear, which are correspondingly meshed; wherein,
the second output driving gear and the third output driving gear are fixedly arranged on the second intermediate shaft;
the second output driven gear and the third output driven gear are both sleeved on the second output shaft.
As a further preferred embodiment of the present invention, the first shift position is provided between the first input shaft and the first intermediate shaft, and is fixedly provided at an end portion of the first input shaft near the first intermediate shaft.
As a further preferred embodiment of the present invention, the second gear shift device is provided on the second output shaft between the second output driven gear and the third output driven gear.
As a further preferred embodiment of the invention, the drive system is capable of achieving the following modes of operation:
1) Field driving mode under non-operation scene:
the first gear shifting device is not combined, and the second gear shifting device is combined with the third output driven gear on the right side;
2) Road driving mode in non-job scene:
the first gear shifting device is not combined, and the second gear shifting device is combined with the left second output driven gear;
3) Plow mode in the work scene:
the first gear shifting device is combined, and the second gear shifting device is combined with a third output driven gear on the right side;
4) Harvesting mode in the working scenario:
the first gear shift device is combined, and the second gear shift device is combined with the left second output driven gear.
Further, the invention also provides a control method of the hybrid power tractor driving system, which is characterized in that: the method comprises the following steps:
s1: the whole vehicle controller carries out information interaction with a motor sensor, a gearbox sensor and an engine sensor after self-checking through the system, and confirms the running state of the vehicle;
s21: if the vehicle is in a braking state, judging the load state of the battery;
s211: if the battery load is smaller than the set value, an energy recovery mode is started, the first motor and the second motor are reversed, and kinetic energy is converted into electric energy to be stored in a power battery;
s22: if the vehicle is in a parking state, judging whether the vehicle has a starting intention or not:
s221: if the starting intention exists, judging the load state of the battery, and if the load of the battery is larger than a set value, starting a pure electric mode;
s222: if no starting intention exists, judging the state of the battery load in a parking state, and if the battery load is smaller than a set value, starting a parking power generation mode;
s23: if the vehicle is in a traction state, the vehicle is in an operation mode, and whether the engine works in a set high-efficiency area is judged;
s231: if the engine works in the set high-efficiency interval, a hybrid power mode is started, and at the moment, the first generator and the second generator provide power for the first motor and the second motor;
s232: if the working range of the engine is lower than the set high-efficiency interval, the rotating speed of the engine is increased, the engine is operated in the high-efficiency interval, a hybrid power mode is started, and at the moment, power is provided for the first motor and the second motor by the first generator, the second generator and the power battery;
s233: if the working range of the engine is higher than the set high-efficiency interval, the rotating speed of the engine is reduced, the engine is operated in the high-efficiency interval, the hybrid power mode is started, and at the moment, the first generator and the second generator provide power for the first motor and the second motor and charge the power battery.
Compared with the prior art, the invention has the following beneficial effects:
1) The invention provides a hybrid power tractor driving system and a control method thereof, which can widen the efficiency interval of a driving motor, improve the running efficiency of the system, meet the power requirements of the tractor under various complex running conditions and reduce the weight of the driving system through the power coupling and the power decoupling of double motors; and the double-motor power confluence driving system can provide a plurality of driving modes and keep the motor to work in a high-efficiency area under a heavy load, thereby improving the working efficiency of the motor and obtaining better economy.
2) The invention provides a hybrid power tractor driving system and a control method thereof, which realize diesel-electric hybrid power driving of a tractor, and charge a power battery of a motor through a diesel engine, so that the diesel engine can continuously charge and store energy for the power battery in a working interval with optimal oil consumption and emission, thereby achieving the purposes of saving energy and reducing emission and improving the economical efficiency of the tractor. In addition, compared with the traditional mechanical gearbox of the tractor, the mechanical gearbox of the tractor can improve operation comfort and power performance, and has remarkable advantages in aspects of noise control of the tractor and the like.
3) The invention provides a hybrid power tractor driving system and a control method thereof, which can meet the requirements of high-end and comfort of a tractor, solve the requirements of high-end and comfort of the tractor through the characteristics of a motor, and avoid the dependence on an imported gearbox.
4) The invention provides a hybrid power tractor driving system and a control method thereof, which meet the operation requirement of an agricultural tractor, not only meet the operation requirement of the agricultural tractor, but also realize low carbonization of agricultural machinery. This means that the technical solution not only can meet the use requirements of the tractor in terms of performance, but also makes a contribution in terms of environmental protection. .
Drawings
Fig. 1 is a logic structure diagram of a driving system provided by the present invention.
Fig. 2 is a schematic structural diagram of a gearbox provided by the invention.
Fig. 3 is a power path diagram in the transmission in the tractor operating mode 1) of the present invention.
Fig. 4 is a power roadmap within the transmission when the tractor operates in mode 2) of the present invention.
Fig. 5 is a power roadmap in the transmission case in the tractor operating mode 3) of the present invention.
Fig. 6 is a power roadmap in the transmission in the tractor operating mode 4) of the invention.
Fig. 7 is a flow chart of the steps of the control method provided by the present invention.
Fig. 8 is a power flow chart at step S211 of the control method provided by the present invention.
Fig. 9 is a power flow chart at step S221 of the control method provided by the present invention.
Fig. 10 is a power flow chart at step S222 of the control method provided by the present invention.
Fig. 11 is a power flow chart at step S231 of the control method provided by the present invention.
Fig. 12 is a power flow chart at step S232 of the control method provided by the present invention.
Fig. 13 is a power flow chart at step S233 of the control method provided by the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
First embodiment
1-2 show a hybrid tractor driving system according to a first embodiment of the present invention, which includes a power system 1, a power generation system 2, a control system 3 and an energy storage system 4; the power generation system 2 and the energy storage system 4 are respectively connected with the power system 1 through the control system 3 and perform power output so as to control the power distribution among the energy through the control system 3; wherein the method comprises the steps of
The power system 1 comprises a first motor 11 and a second motor 12, wherein output shafts of the first motor 11 and the second motor 12 are respectively connected with a power takeoff 14 and an output end 15 through a gearbox 13, as a preferable mode, the first motor 11 in the embodiment is a PTO motor, the second motor 12 is a walking motor, the first motor 11 and the second motor 12 are high-speed motors, so that the efficiency interval of a driving motor is widened, the running efficiency of the system is improved, the power requirements of a tractor under various complex running working conditions are met, the weight of the driving system is reduced, the working efficiency of the motor is improved, and better economy is obtained.
The power generation system 2 comprises an engine 21, an output shaft of the engine is connected with a first generator 24 and a second generator 25 through a torque damper 22 and a speed increasing box 23, output ends of the first generator 24 and the second generator 25 are connected with a first motor 11 and a second motor 12 through a control system 3, so as to provide driving power for the first motor 11 and the second motor 12 through the first generator 24 and the second generator 25 or realize charging for a power battery 41 through the first generator 24 and the second generator 25 according to requirements;
the control system 3 includes a vehicle controller 31 for controlling the vehicle, a first motor controller 32 and a second motor controller 33 respectively connected to the first motor 11 and the second motor 12, a generator controller 34 connected to the first generator 24 and the second generator 25, a transmission controller 35 connected to the transmission 13, and a battery management system 36 connected to the power battery; the whole vehicle controller carries out information interaction through a motor sensor, a gearbox sensor and an engine sensor, confirms the running state of the vehicle, and correspondingly controls the motor, the generator, the power battery and the gearbox through corresponding controllers.
In the present embodiment, the energy storage system 4 includes a power battery 41.
As shown in fig. 2, the transmission case 13 in the present embodiment includes:
the output shaft of the first motor 11 is fixedly connected with the first input shaft S1;
the output shaft of the second motor 12 is fixedly connected with the second input shaft S2;
the first intermediate shaft S6, the first input shaft S1 being selectively connectable with the first intermediate shaft S6 via the first shift device C1; the first input shaft S1 and the first intermediate shaft S6 can be coupled to or decoupled from each other by the first shifting device C1, as shown in fig. 2, the first shifting position C1 is disposed between the first input shaft S1 and the first intermediate shaft S6 and fixedly disposed at an end portion of the first input shaft S1 near the first intermediate shaft S6, so that:
when the first shift position C1 is located in the left position, the first input shaft S1 is disconnected from the first intermediate shaft S6;
when the first shift position C1 is located at the right position, the first input shaft S1 is coupled with the first intermediate shaft S6;
the second intermediate shaft S3, the first input shaft S1 and the second input shaft S2 are connected with the first intermediate shaft S3 through an input gear pair; as shown in fig. 2, the input gear pair in the present embodiment includes a first input driving gear G11, a second input driving gear G21, and an input driven gear G31, where the first input driving gear G11 and the second input driving gear G21 are respectively meshed with the input driven gear G31; and wherein the first input driving gear G11 is fixedly connected with the first input shaft S1; the second input driving gear G21 is fixedly connected with the second input shaft S2; the input driven gear G31 is fixedly connected with the intermediate shaft S3; the output power of the first motor and the second motor can be transmitted to the second intermediate shaft S3 through the input gear pair;
the first output shaft S4, the first intermediate shaft S6 is connected with the first output shaft S4 through a first output gear pair, and the first output shaft S4 is connected with the power takeoff 14; in the present embodiment, the first output gear pair includes a first output driving gear G12 and a first output driven gear G41 that are correspondingly engaged; wherein, the first output driving gear G12 is fixed on the first intermediate shaft S6, and the first output driven gear G41 is fixed on the first output shaft S4; the power transmitted to the first intermediate shaft S6 can be output to the power take-off 14 via the first output shaft S4 by the first output gear pair.
The second output shaft S5, the second intermediate shaft S3 is connected to the second output shaft S5 through a second output gear pair, and the second output shaft S5 is connected to the output end 14, in this embodiment, the second output gear pair includes a second output driving gear G32 and a second output driven gear G51, and a third output driving gear G33 and a third output driven gear G52, which are correspondingly meshed; wherein, the second output driving gear G32 and the third output driving gear G33 are both fixedly arranged on the second intermediate shaft S3; the second output driven gear G51 and the third output driven gear G52 are both sleeved on the second output shaft S5; the power transmitted to the second intermediate shaft S3 can be output to the output end 15 via the second output shaft S5 by the second output gear pair;
the second output shaft S5 is also provided with a second gear shifting device C2 so as to be selectively connected with gears of second output gear pairs on two sides; in the present embodiment, the second shifting device C2 is disposed on the second output shaft S5 between the second output driven gear G51 and the third output driven gear G52, so as to selectively output the power transmitted to the second intermediate shaft S3 from the second output shaft S5 via the second output driving gear G32 and the second output driven gear G51, or the third output driving gear G33 and the third output driven gear G52.
As shown in fig. 3-6, the driving system provided in this embodiment can implement the following operation modes:
1) Field driving mode under non-operation scene:
the first shifting device C1 is not combined, and the second shifting device C2 is combined with the third output driven gear G52 on the right side; at this time, the PTO power takeoff 14 does not output power, the first motor 11 and the second motor 12 implement power coupling on the second intermediate shaft S3 through the input gear pair, and power is output from the second output shaft S5 through the third output driving gear G33 and the third output driven gear G52, so as to implement a field driving mode in a non-working scenario, as shown in fig. 3;
2) Road driving mode in non-job scene:
the first shifting device C1 is not combined, and the second shifting device C2 is combined with the left second output driven gear G51; at this time, the PTO power takeoff 14 does not output power, the first motor 11 and the second motor 12 implement power coupling on the second intermediate shaft S3 through the input gear pair, and power is output from the second output shaft S5 through the second output driving gear G32 and the second output driven gear G51, so as to implement a road running mode in a non-working scenario, as shown in fig. 4;
3) Plow mode in the work scene:
the first shifting device C1 is combined, and the second shifting device C2 is combined with the third output driven gear G52 on the right side; at this time, the power of the two motors is not coupled, the power output by the first motor 11 is transmitted to the PTO power takeoff 14 through the first output gear pair to provide power output, and the power output by the second motor 12 is output from the second output shaft S5 through the third output driving gear G33 and the third output driven gear G52, so that a plough mode in an operation scene is realized, as shown in FIG. 5;
4) Harvesting mode in the working scenario:
the first shifting device C1 is combined, and the second shifting device C2 is combined with the left second output driven gear G51; at this time, the power of the two motors is not coupled, the power output by the first motor 11 is transmitted to the PTO power takeoff 14 through the first output gear pair to provide power output, and the power output by the second motor 12 is output from the second output shaft S5 through the second output driving gear G32 and the second output driven gear G51, so as to implement a harvesting mode in an operation scene.
Second embodiment
The second embodiment of the present invention also provides a control method of a hybrid tractor driving system, as shown in fig. 7, comprising the steps of:
s1: the whole vehicle controller carries out information interaction with a motor sensor, a gearbox sensor and an engine sensor after self-checking through the system, and confirms the running state of the vehicle;
s21: if the vehicle is in a braking state, judging the load state of the battery;
s211: if the battery load is smaller than the set value, an energy recovery mode is started, the first motor and the second motor are reversed, and kinetic energy is converted into electric energy to be stored in a power battery; the flow chart at this time is shown in fig. 8;
s22: if the vehicle is in a parking state, judging whether the vehicle has a starting intention or not:
s221: if the starting intention exists, judging the load state of the battery, and if the load of the battery is larger than a set value, starting a pure electric mode; the flow chart at this time is shown in fig. 9;
s222: if no starting intention exists, judging the state of the battery load in a parking state, and if the battery load is smaller than a set value, starting a parking power generation mode; the flow chart at this time is shown in fig. 10;
s23: if the vehicle is in a traction state, the vehicle is in an operation mode, and whether the engine works in a set high-efficiency area is judged;
s231: if the engine works in the set high-efficiency interval, a hybrid power mode is started, and at the moment, the first generator and the second generator provide power for the first motor and the second motor; the flow chart at this time is shown in fig. 11;
s232: if the working range of the engine is lower than the set high-efficiency interval, the rotating speed of the engine is increased, the engine is operated in the high-efficiency interval, a hybrid power mode is started, and at the moment, power is provided for the first motor and the second motor by the first generator, the second generator and the power battery; the flow chart at this time is shown in fig. 12;
s233: if the engine operating range is higher than the set high-efficiency interval, the engine speed is reduced to operate in the high-efficiency interval, a hybrid mode is started, at the moment, the first generator and the second generator are used for providing power for the first motor and the second motor, and the power battery is charged, and the flow chart at the moment is shown in fig. 13.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. A hybrid tractor drive system characterized by: comprises a power system (1), a power generation system (2), a control system (3) and an energy storage system (4); the power generation system (2) and the energy storage system (4) are respectively connected with the power system (1) through the control system (3) and perform power output; wherein the method comprises the steps of
The power system (1) comprises a first motor (11) and a second motor (12), and output shafts of the first motor (11) and the second motor (12) are respectively connected with a power takeoff (14) and an output end (15) through a gearbox (13);
the power generation system (2) comprises an engine (21), an output shaft of the engine is connected with a first generator (24) and a second generator (25) through a torque shock absorber (22) and a speed increasing box (23), and output ends of the first generator (24) and the second generator (25) are connected with a first motor (11) and a second motor (12) through a control system (3);
the control system (3) comprises a whole vehicle controller (31), a first motor controller (32) and a second motor controller (33) which are respectively connected with the first motor (11) and the second motor (12) correspondingly, a generator controller (34) connected with the first generator (24) and the second generator (25), a gearbox controller (35) connected with the gearbox (13) and a battery management system (36) connected with the power battery;
the energy storage system (4) comprises a power battery (41).
2. The differential double-planet-row-wheel-side speed-reducing mining-truck electric drive axle of claim 1, wherein: the first motor (11) is a PTO motor, the second motor (12) is a walking motor, and the first motor (11) and the second motor (12) are high-speed motors.
3. The differential double-planet-row-wheel-side speed-reducing mining-truck electric drive axle of claim 1, wherein: the gearbox (13) comprises:
the output shaft of the first motor (11) is fixedly connected with the first input shaft (S1);
the output shaft of the second motor (12) is fixedly connected with the second input shaft (S2);
a first countershaft (S6), the first input shaft (S1) being selectively connectable to the first countershaft (S6) via a first gear shift device (C1);
a second intermediate shaft (S3), wherein the first input shaft (S1) and the second input shaft (S2) are connected with the first intermediate shaft (S3) through an input gear pair;
the first output shaft (S4), the first intermediate shaft (S6) is connected with the first output shaft (S4) through a first output gear pair, and the first output shaft (S4) is connected with the power takeoff (14);
the second output shaft (S5), second jackshaft (S3) are connected second output shaft (S5) through second output gear pair, output (14) are connected to second output shaft (S5), still be provided with second gearshift (C2) on second output shaft (S5) in order to be connected with the gear of both sides second output gear pair optionally.
4. A differential double-planet-row-wheel-side-deceleration mine truck electric drive axle as claimed in claim 3, wherein: the input gear pair comprises a first input driving gear (G11), a second input driving gear (G21) and an input driven gear (G31), and the first input driving gear (G11) and the second input driving gear (G21) are respectively meshed with the input driven gear (G31) correspondingly; wherein,
the first input driving gear (G11) is fixedly connected with the first input shaft (S1);
the second input driving gear (G21) is fixedly connected with the second input shaft (S2);
the input driven gear (G31) is fixedly connected with the intermediate shaft (S3).
5. A differential double-planet-row-wheel-side-deceleration mine truck electric drive axle as claimed in claim 3, wherein: the first output gear pair comprises a first output driving gear (G12) and a first output driven gear (G41) which are correspondingly meshed; the first output driving gear (G12) is fixed on a first intermediate shaft (S6), and the first output driven gear (G41) is fixed on a first output shaft (S4).
6. A differential double-planet-row-wheel-side-deceleration mine truck electric drive axle as claimed in claim 3, wherein: the second output gear pair comprises a second output driving gear (G32) and a second output driven gear (G51) which are correspondingly meshed, and a third output driving gear (G33) and a third output driven gear (G52); wherein,
the second output driving gear (G32) and the third output driving gear (G33) are fixedly arranged on the second intermediate shaft (S3);
the second output driven gear (G51) and the third output driven gear (G52) are both sleeved on the second output shaft (S5).
7. A differential double-planet-row-wheel-side-deceleration mine truck electric drive axle as claimed in claim 3, wherein: the first gear shifting position (C1) is arranged between the first input shaft (S1) and the first intermediate shaft (S6), and is fixedly arranged at the end part of the first input shaft (S1) close to the first intermediate shaft (S6).
8. The differential double-planet-row-wheel-side-deceleration mine truck electric drive axle of claim 6, wherein: the second gear shifting device (C2) is arranged on the second output shaft (S5) and is positioned between the second output driven gear (G51) and the third output driven gear (G52).
9. The differential double-planet-row-wheel-side-deceleration mine truck electric drive axle of claim 8, wherein: the driving system can realize the following working modes:
1) Field driving mode under non-operation scene:
the first gear shifting device (C1) is not combined, and the second gear shifting device (C2) is combined with the third output driven gear (G52) on the right side;
2) Road driving mode in non-job scene:
the first gear shifting device (C1) is not combined, and the second gear shifting device (C2) is combined with the left second output driven gear (G51);
3) Plow mode in the work scene:
a first gear shift device (C1) is combined, and a second gear shift device (C2) is combined with a third output driven gear (G52) on the right side;
4) Harvesting mode in the working scenario:
the first shift device (C1) is coupled, and the second shift device (C2) is coupled to the left second output driven gear (G51).
10. A control method of the hybrid tractor driving system according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
s1: the whole vehicle controller carries out information interaction with a motor sensor, a gearbox sensor and an engine sensor after self-checking through the system, and confirms the running state of the vehicle;
s21: if the vehicle is in a braking state, judging the load state of the battery;
s211: if the battery load is smaller than the set value, an energy recovery mode is started, the first motor and the second motor are reversed, and kinetic energy is converted into electric energy to be stored in a power battery;
s22: if the vehicle is in a parking state, judging whether the vehicle has a starting intention or not:
s221: if the starting intention exists, judging the load state of the battery, and if the load of the battery is larger than a set value, starting a pure electric mode;
s222: if no starting intention exists, judging the state of the battery load in a parking state, and if the battery load is smaller than a set value, starting a parking power generation mode;
s23: if the vehicle is in a traction state, the vehicle is in an operation mode, and whether the engine works in a set high-efficiency area is judged;
s231: if the engine works in the set high-efficiency interval, a hybrid power mode is started, and at the moment, the first generator and the second generator provide power for the first motor and the second motor;
s232: if the working range of the engine is lower than the set high-efficiency interval, the rotating speed of the engine is increased, the engine is operated in the high-efficiency interval, a hybrid power mode is started, and at the moment, power is provided for the first motor and the second motor by the first generator, the second generator and the power battery;
s233: if the working range of the engine is higher than the set high-efficiency interval, the rotating speed of the engine is reduced, the engine is operated in the high-efficiency interval, the hybrid power mode is started, and at the moment, the first generator and the second generator provide power for the first motor and the second motor and charge the power battery.
CN202311793335.9A 2023-12-25 2023-12-25 Hybrid power tractor driving system and control method thereof Pending CN117799418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311793335.9A CN117799418A (en) 2023-12-25 2023-12-25 Hybrid power tractor driving system and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311793335.9A CN117799418A (en) 2023-12-25 2023-12-25 Hybrid power tractor driving system and control method thereof

Publications (1)

Publication Number Publication Date
CN117799418A true CN117799418A (en) 2024-04-02

Family

ID=90420911

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311793335.9A Pending CN117799418A (en) 2023-12-25 2023-12-25 Hybrid power tractor driving system and control method thereof

Country Status (1)

Country Link
CN (1) CN117799418A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118149058A (en) * 2024-05-10 2024-06-07 中联重科股份有限公司 Hybrid power system and walking work machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118149058A (en) * 2024-05-10 2024-06-07 中联重科股份有限公司 Hybrid power system and walking work machine

Similar Documents

Publication Publication Date Title
CN101700737B (en) Generator control system of range-extended electric car
CN117799418A (en) Hybrid power tractor driving system and control method thereof
CN111055672B (en) Two keep off hybrid power coupled system and vehicle
CN216915509U (en) Hybrid power coupling system of single planet row
CN111267600A (en) Multi-power coupling timely full-drive system of heavy transport vehicle and control method
CN110978990A (en) Timely four-wheel drive system of hybrid electric vehicle
CN114148157A (en) Dual-motor dual-clutch hybrid power gearbox
CN113199931A (en) Hybrid drive for a motor vehicle
CN216886230U (en) Four-wheel drive control system of double-motor-driven pure electric loader
CN115416473A (en) Multi-shaft driving hybrid power system and vehicle
CN215904302U (en) Hybrid drive system and vehicle thereof
CN101830220B (en) Generator multimode control system of range-extended electric car
CN101462482A (en) Novel double-motor series-parallel connection hybrid power assembly configuration
KR101085976B1 (en) power train for a hybrid electric vehicle
CN217863691U (en) Hybrid tractor power system and tractor
CN206765800U (en) A kind of single motor hybrid power system for automobile
CN215944274U (en) Longitudinal double-motor single-gear power system for hybrid electric vehicle
CN220785437U (en) Double-planet row mixing system
CN217598332U (en) Hybrid power speed change mechanism for vehicle
CN221162191U (en) New energy mixing system for light truck
CN215360903U (en) Hybrid drive for a motor vehicle
CN218519529U (en) Multi-shaft driving hybrid power system and vehicle
CN213948120U (en) Coaxial hybrid power driving system and vehicle
CN216833192U (en) Double-clutch multi-power-mode hybrid box
CN215552517U (en) Longitudinal double-motor power system for hybrid electric vehicle

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