CN114987189A - Dual-motor hybrid power system, control method and vehicle - Google Patents

Dual-motor hybrid power system, control method and vehicle Download PDF

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Publication number
CN114987189A
CN114987189A CN202210657707.4A CN202210657707A CN114987189A CN 114987189 A CN114987189 A CN 114987189A CN 202210657707 A CN202210657707 A CN 202210657707A CN 114987189 A CN114987189 A CN 114987189A
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China
Prior art keywords
transmission path
generator
engine
driving motor
transmitted
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CN202210657707.4A
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Chinese (zh)
Inventor
解瑞
徐占
赵成福
康志军
樊雪来
杨俊�
赵健涛
毛泽贤
吴世楠
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FAW Group Corp
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FAW Group Corp
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Priority to CN202210657707.4A priority Critical patent/CN114987189A/en
Publication of CN114987189A publication Critical patent/CN114987189A/en
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    • 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
    • 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
    • B60K6/38—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 driveline clutches
    • 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
    • B60K6/42—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 the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel type
    • B60K6/442—Series-parallel switching type
    • 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
    • B60K6/42—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 the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel type
    • B60K6/445—Differential gearing distribution type
    • 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
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • 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
    • Y02T10/62—Hybrid vehicles

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

Abstract

The invention discloses a double-motor hybrid power system, a control method and a vehicle, wherein the system structurally comprises a driving motor, an engine, a generator, a differential mechanism, a first connecting piece, a clutch group and a torque-limiting shock absorber, wherein each component is in transmission connection through nine gears and six connecting shafts, and a plurality of transmission paths and a plurality of driving working modes are designed; in the scheme, the engine, the generator and the driving motor can all participate in driving, the generator can be completely decoupled with the engine when participating in driving, the loss of rotation energy is reduced, the economy of the whole vehicle is improved, the system has the using functions of a plurality of modes, the application range is wide, the practicability is high, the limitation of the highest rotating speed of the driving motor to the highest vehicle speed is avoided, and the dynamic property of the whole vehicle is improved.

Description

Dual-motor hybrid power system, control method and vehicle
Technical Field
The invention relates to a vehicle hybrid power driving technology, in particular to a dual-motor hybrid power system, a control method and a vehicle.
Background
With increasingly strict requirements of oil consumption regulations and rapid development of new energy automobiles, the sales volume of pure electric automobiles and hybrid electric automobiles is increased explosively.
The pure electric vehicle is limited by the factors of long charging time, short battery endurance mileage, low coverage rate of public charging facilities, unstable battery safety and the like, cannot occupy the market of the main market in a short period, and the hybrid electric vehicle is favored by consumers by combining the advantages of the pure electric vehicle and the fuel vehicle.
The conventional double-motor hybrid power system comprises an engine, a generator and a driving motor, wherein the generator is directly connected with the engine through a primary speed reducing mechanism, the generator does not participate in driving, and the driving motor is directly connected with a differential gear through a primary speed reducing device or a secondary speed reducing device to drive a vehicle. There are two problems with this configuration: firstly, the generator is connected with the engine through a primary speed reducing mechanism or directly, when the generator participates in driving and the engine does not participate in driving, the generator and the engine are not decoupled, and the engine rotates along with the generator while the generator rotates, so that great rotation energy loss is caused, and the economy of the whole vehicle is influenced; and secondly, the driving motor is directly connected with a differential gear through a primary or secondary speed reducer, the driving motor and the differential gear are not decoupled and are limited by the highest rotating speed of the driving motor, and the highest speed is the speed of the driving motor at the highest rotating speed.
In patent publication CN212667107U, a dual-motor hybrid vehicle driving apparatus realizes a pure electric driving mode and a hybrid driving mode by the coordination of an engine and dual motors, and realizes a range-extending driving mode by disconnecting a ring gear and an intermediate shaft of a planetary gear set. However, in this solution, the form of the driving mode is still simpler, the purpose is to realize the above three driving modes, and the requirements of the user in terms of universality and applicability are not considered.
In the patent publication CN112224005A, a hybrid transmission can realize that the engine can generate power by the generator and the driving motor at the same time when the engine is in a high-speed operating condition, but the generator and the engine of the hybrid system are directly connected through a first-stage reduction gear, are not decoupled from each other, and do not participate in driving. Similarly, a hybrid power system and a control method disclosed in CN113022295A, and a hybrid drive system and a vehicle disclosed in CN110962573B are both provided, in which a generator is directly connected to an engine through a first-stage reduction gear, and are not decoupled from each other, and a drive motor is also directly connected to a differential through a first-stage reduction gear, and are not decoupled from each other, and the engine and the drive motor are not decoupled when the engine is driven.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a double-motor hybrid power system, a control method and a vehicle, wherein the engine, a generator and a driving motor can be driven, and the generator is completely decoupled with the engine when being driven, so that the limitation of the highest rotating speed of the driving motor to the highest vehicle speed is avoided, and the power performance and the fuel economy of the whole vehicle are improved.
The technical scheme is as follows: the invention discloses a dual-motor hybrid power system, which comprises a driving motor, an engine, a generator, a differential, a first connecting piece, a clutch group, a shaft tooth group and a torque-limiting shock absorber, wherein the driving motor is connected with the engine through a transmission;
a rotor of the driving motor is fixedly connected with a first connecting shaft, a first gear and a fourth gear are sleeved on the first connecting shaft in a clearance mode, a first connecting piece is arranged between the first gear and the fourth gear in a transmission mode, the first connecting piece is connected with a differential in a transmission mode through a fourth connecting shaft, and a second gear, a fifth gear and a ninth gear are sleeved on the fourth connecting shaft;
the engine is in transmission connection with the torque-limiting shock absorber, the clutch group comprises a first clutch, a second clutch and a third clutch, and the torque-limiting shock absorber is in transmission connection with the first clutch through a second connecting shaft;
a rotor of the generator is fixedly connected with a third connecting shaft, and a seventh gear is sleeved on the third connecting shaft;
the second clutch is in transmission connection with a fifth connecting shaft, and a third gear is sleeved on the fifth connecting shaft;
the third clutch is in transmission connection with a sixth connecting shaft, the sixth connecting shaft is sleeved outside the fifth connecting shaft in a clearance manner, a sixth gear is sleeved on the sixth connecting shaft, and the sixth connecting shaft is in transmission connection with the third connecting shaft through an eighth gear;
the first gear and the third gear are respectively meshed with the second gear, the fourth gear and the sixth gear are respectively meshed with the fifth gear, a differential gear on the differential is meshed with the ninth gear, and the seventh gear is meshed with the eighth gear;
the system includes a first transmission path: the first connecting shaft is connected with the first gear;
a second transmission path: the first connecting shaft is connected with the fourth gear;
a third transmission path: the first clutch is connected with the second connecting shaft and the eighth gear, the second clutch is connected with the fifth connecting shaft and the eighth gear, and the third clutch is disconnected with the sixth connecting shaft and the eighth gear;
a fourth transmission path: the first clutch is connected with the second connecting shaft and the eighth gear, the second clutch disconnects the fifth connecting shaft and the eighth gear, and the third clutch is connected with the sixth connecting shaft and the eighth gear;
a fifth transmission path: the first clutch is connected with the second connecting shaft and the eighth gear;
a sixth transmission path: the first clutch disconnects the second connecting shaft and the eighth gear, the second clutch connects the fifth connecting shaft and the eighth gear, and the third clutch disconnects the sixth connecting shaft and the ninth gear;
a seventh transmission path: the first clutch disconnects the second connecting shaft and the ninth gear, the second clutch disconnects the fifth connecting shaft and the eighth gear, and the third clutch connects the sixth connecting shaft and the ninth gear.
Preferably, the system comprises the following modes of operation:
parking starting working mode: the fifth transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor does not work, the engine and the generator work, and the driving force of the generator is transmitted to the engine through the fifth transmission path;
and an idle power generation working mode: the fifth transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor does not work, the engine and the generator work, and the driving force of the engine is transmitted to the generator through the fifth transmission path;
the braking energy recovery working mode comprises:
a first gear: the first transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the wheels is transmitted to the driving motor through the differential and the first transmission path to enable the driving motor to generate electricity;
and (2) second: the second transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the wheels is transmitted to the driving motor through the differential and the second transmission path, so that the driving motor generates electricity.
Preferably, the system comprises an electric drive only operation mode:
first gear: the first transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels;
and (2) second: the second transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels.
Preferably, the system comprises an engine direct drive operating mode:
first gear: the third transmission path is communicated, other clutches and connecting pieces are disconnected, the engine works, the driving motor and the generator do not work, the generator rotates along with the rotation, and the driving force of the engine is transmitted to the differential mechanism through the third transmission path to drive wheels;
and (2) second gear: the fourth transmission path is communicated, other clutches and connecting pieces are disconnected, the engine works, the driving motor and the generator do not work, the generator rotates along with the engine, and the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path to drive wheels.
Preferably, the system comprises a generator direct drive operating mode:
first gear: the sixth transmission path is communicated, other clutches and connecting pieces are disconnected, the generator works, the driving motor and the engine do not work, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels;
and (2) second: the seventh transmission path is communicated, other clutches and connecting pieces are disconnected, the generator works, the driving motor and the engine do not work, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels.
Preferably, the system includes a series drive mode of operation:
first gear: the fifth transmission path is communicated with the first transmission path, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the generator through the fifth transmission path, the generator generates electricity and provides electric energy for the driving motor, and the driving force generated by the driving motor is transmitted to the differential through the first transmission path to drive wheels;
and (2) second gear: the fifth transmission path is communicated with the second transmission path, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the generator through the fifth transmission path, the generator generates electricity and provides electric energy for the driving motor, and the driving motor generates driving force and transmits the driving force to the differential through the second transmission path to drive wheels.
Preferably, the system comprises an engine and a driving motor which are connected in parallel to drive the working mode:
a first gear: the first transmission path is communicated with the third transmission path, other clutches are disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels together;
and (2) second: the second transmission path is communicated with the third transmission path, other clutches are disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation of the generator, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels together;
third gear: the first transmission path is communicated with the fourth transmission path, other clutches are disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels together;
fourth gear: the second transmission path is communicated with the fourth transmission path, other clutches are disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels together.
Preferably, the system comprises a parallel driving working mode of the driving motor and the generator:
first gear: the first transmission path is communicated with the sixth transmission path, other clutches are disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
and (2) second: the second transmission path is communicated with the sixth transmission path, other clutches are disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
and (3) third gear: the first transmission path is communicated with the seventh transmission path, other clutches are disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path, and the wheels are driven together;
fourth gear: the second transmission path is communicated with the seventh transmission path, other clutches are disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together.
Preferably, the system comprises an engine and generator parallel driving operation mode:
first gear: the driving force of the engine is transmitted to the differential mechanism through the third transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
and (2) second: the fourth transmission path is communicated with the seventh transmission path, other clutches and connecting pieces are disconnected, the engine and the generator work, the driving motor does not work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together.
Preferably, the system comprises an engine, a driving motor and a generator which are connected in parallel to drive the working mode:
first gear: the third transmission path, the sixth transmission path and the first transmission path are communicated, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
and (2) second: the third transmission path, the sixth transmission path and the second transmission path are communicated, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
and (3) third gear: the fourth transmission path, the seventh transmission path and the first transmission path are communicated, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to jointly drive wheels;
fourth gear: the fourth transmission path, the seventh transmission path and the second transmission path are communicated, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together.
A control method of a double-motor hybrid power system comprises the double-motor hybrid power system and an MCU (microprogrammed control unit) for reading the working state of a vehicle and controlling the action of elements;
when the MCU reads that the vehicle is in a parking starting working mode, the fifth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor does not work, the engine and the generator work, and the driving force of the generator is transmitted to the engine through the fifth transmission path;
when the MCU reads that the vehicle is in an idle speed power generation working mode, the fifth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor does not work, the engine and the generator work, and the driving force of the engine is transmitted to the generator through the fifth transmission path;
when the MCU reads that the vehicle is in a first gear of a braking energy recovery working mode, the first transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the wheels is transmitted to the driving motor through the differential and the first transmission path to enable the driving motor to generate electricity;
when the MCU reads that the vehicle is in a second gear of a braking energy recovery working mode, the second transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the wheels is transmitted to the driving motor through the differential and the second transmission path to enable the driving motor to generate electricity;
when the MCU reads that the vehicle is in a first gear of a pure electric driving working mode, the first transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels;
when the MCU reads that the vehicle is in the second gear of the pure electric driving working mode, the second transmission path is controlled to be communicated, other clutches and connecting pieces are disconnected, the driving motor works, the engine and the generator do not work, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and wheels are driven;
when the MCU reads that the vehicle is in a first gear of an engine direct-drive working mode, the third transmission path is communicated and controls other clutches and connecting pieces to be disconnected, the engine works, the driving motor and the generator do not work, the generator rotates along with the rotation, and the driving force of the engine is transmitted to the differential mechanism through the third transmission path to drive wheels;
when the MCU reads that the vehicle is in the second gear of the engine direct-drive working mode, the fourth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the engine works, the driving motor and the generator do not work, the generator rotates along with the rotation, and the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of a direct-drive working mode of the generator, the sixth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the generator works, the driving motor and the engine do not work, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels;
when the MCU reads that the vehicle is in a second gear of a generator direct-drive working mode, the seventh transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the generator works, the driving motor and the engine do not work, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of a series driving working mode, the fifth transmission path is controlled to be communicated with the first transmission path, other clutches are controlled to be disconnected, the engine, the driving motor and the generator all work, the driving force of the engine is transmitted to the generator through the fifth transmission path, the generator generates electricity and provides electric energy for the driving motor, and the driving force generated by the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels;
when the MCU reads that the vehicle is in the second gear of the series driving working mode, the fifth transmission path is controlled to be communicated with the second transmission path, other clutches are controlled to be disconnected, the engine, the driving motor and the generator all work, the driving force of the engine is transmitted to the generator through the fifth transmission path, the generator generates electricity and provides electric energy for the driving motor, and the driving motor generates driving force and transmits the driving force to the differential through the second transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of a parallel driving working mode of an engine and a driving motor, the first transmission path and the third transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation of the generator, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels together;
when the MCU reads that the vehicle is in a second gear of an engine and driving motor parallel driving working mode, the second transmission path and the third transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation of the generator, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels together;
when the MCU reads that the vehicle is in a third gear of a parallel driving working mode of an engine and a driving motor, the first transmission path and the fourth transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation of the generator, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels together;
when the MCU reads that the vehicle is in a fourth gear of a parallel driving working mode of an engine and a driving motor, the second transmission path is controlled to be communicated with the fourth transmission path, other clutches are controlled to be disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation of the generator, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels together;
when the MCU reads that the vehicle is in a first gear of a driving mode that the driving motor and the generator are connected in parallel, the first transmission path and the sixth transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a second gear of a parallel driving working mode of the driving motor and the generator, the second transmission path and the sixth transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a third gear of a driving mode that the driving motor and the generator are connected in parallel, the first transmission path and the seventh transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together;
when the MCU reads that the vehicle is in a fourth gear of a driving working mode in which the driving motor and the generator are connected in parallel, the second transmission path and the seventh transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together;
when the MCU reads that the vehicle is in a first gear of a parallel driving working mode of an engine and a generator, the third transmission path and the sixth transmission path are controlled, other clutches and connecting pieces are controlled to be disconnected, the engine and the generator work, a driving motor does not work, the driving force of the engine is transmitted to a differential mechanism through the third transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a state that the engine and the generator are in parallel connection to drive the working mode to be in a second gear, the fourth transmission path and the seventh transmission path are controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the engine and the generator work, the driving motor does not work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together;
when the MCU reads that the vehicle is in a first gear of a parallel driving working mode of an engine, a driving motor and a generator, the third transmission path, the sixth transmission path and the first transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine, the driving motor and the generator all work, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path, and wheels are driven together;
when the MCU reads that the vehicle is in a second gear of a parallel driving working mode of an engine, a driving motor and a generator, the third transmission path, the sixth transmission path and the second transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path, and wheels are driven together;
when the MCU reads that the vehicle is in a third gear of a parallel driving working mode of an engine, a driving motor and a generator, the fourth transmission path, the seventh transmission path and the first transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine, the driving motor and the generator all work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path, and wheels are driven together;
when the MCU reads that the vehicle is in a fourth gear of a parallel driving working mode of an engine, a driving motor and a generator, the fourth transmission path, the seventh transmission path and the second transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together.
A vehicle with a double-motor hybrid power system is driven by the double-motor hybrid power system.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages:
1. the engine, the generator and the driving motor can all participate in driving;
2. the generator can be completely decoupled with the engine when participating in driving, thereby reducing the loss of rotation energy and improving the economy of the whole vehicle;
3. the system has the using functions of a plurality of modes, and is wide in application range and strong in practicability;
4. the limitation of the highest rotating speed of the driving motor to the highest vehicle speed is avoided, and the dynamic property of the whole vehicle is improved.
Drawings
FIG. 1 is a schematic illustration of a hybrid powertrain system of the present invention;
FIG. 2 is a schematic illustration of a first drive path in the present invention;
FIG. 3 is a schematic illustration of a second drive path according to the present invention;
FIG. 4 is a schematic illustration of a third drive path according to the present invention;
FIG. 5 is a schematic illustration of a fourth drive path according to the present invention;
FIG. 6 is a schematic illustration of a fifth transmission path according to the present invention;
FIG. 7 is a schematic illustration of a sixth gear path of the present invention;
FIG. 8 is a schematic illustration of a seventh transmission path according to the present invention;
in the figure: 1-driving motor, 2-engine, 3-generator, 4-differential, 5-first connecting piece, 6-clutch group, 7-torque limiting vibration absorber, 11-first connecting shaft, 12-second connecting shaft, 13-third connecting shaft, 14-fourth connecting shaft, 15-fifth connecting shaft, 16-sixth connecting shaft, 41-differential gear, 81-first gear, 82-second gear, 83-third gear, 84-fourth gear, 85-fifth gear, 86-sixth gear, 87-seventh gear, 88-eighth gear, 89-ninth gear, 61-first clutch, 62-second clutch and 63-third clutch.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in fig. 1, the dual-motor hybrid system includes a driving motor 1, an engine 2, a generator 3, a differential 4, a first connecting member 5, a clutch group 6, a shaft-gear group, and a torque-limiting damper 7.
Structurally, the first connecting shaft 11 of driving motor 1's rotor fixedly connected with, clearance cover are equipped with first gear 81 and fourth gear 84 on the first connecting shaft 11, and the transmission of first connecting piece 5 sets up between first gear 81 and fourth gear 84, and first connecting piece 5 is connected with differential 4 transmission through fourth connecting axle 14, and the cover is equipped with second gear 82, fifth gear 85 and ninth gear 89 on the fourth connecting axle 14.
The engine 2 is in transmission connection with a torque-limiting damper 7, which is capable of performing torque-limiting damping for the power output by the engine 2.
The clutch group 6 comprises a first clutch 61, a second clutch 62 and a third clutch 63, and the torque limiting damper 7 is in transmission connection with the first clutch 61 through a second connecting shaft 12.
The rotor of the generator 3 is fixedly connected with a third connecting shaft 13, and a seventh gear 87 is sleeved on the third connecting shaft 13.
The second clutch 62 is in transmission connection with a fifth connecting shaft 15, and a third gear 83 is sleeved on the fifth connecting shaft 15.
The third clutch 63 is in transmission connection with the sixth connecting shaft 16, the sixth connecting shaft 16 is in clearance fit with the outside of the fifth connecting shaft 15, the sixth connecting shaft 16 is sleeved with a sixth gear 86, and the sixth connecting shaft 16 is in transmission connection with the third connecting shaft 13 through an eighth gear 88.
The first gear 81 and the third gear 83 are meshed with the second gear 82, the fourth gear 84 and the sixth gear 86 are meshed with the fifth gear 85, the differential gear 41 of the differential 4 is meshed with the ninth gear 89, and the seventh gear 87 is meshed with the eighth gear 88.
Therefore, a whole set of double-motor hybrid power system is constructed, and subsequent energy transfer is realized through the system under the structure.
Specifically, the system includes a first path (shown in fig. 2): the first connecting shaft 11 is connected with a first gear 81;
second drive path (as shown in fig. 3): the first connecting shaft 11 is connected with the fourth gear 84;
third drive path (as shown in fig. 4): the first clutch 61 connects the second connecting shaft 12 and the eighth gear 88, the second clutch 62 connects the fifth connecting shaft 15 and the eighth gear 88, and the third clutch 63 disconnects the sixth connecting shaft 16 and the eighth gear 88;
fourth drive path (as shown in fig. 5): the first clutch 61 connects the second connecting shaft 12 and the eighth gear 88, the second clutch 62 disconnects the fifth connecting shaft 15 and the eighth gear 88, and the third clutch 63 connects the sixth connecting shaft 16 and the eighth gear 88;
fifth drive path (as shown in fig. 6): the first clutch 61 is connected with the second connecting shaft 12 and the eighth gear 88;
sixth drive path (as shown in fig. 7): the first clutch 61 disconnects the second connecting shaft 12 from the eighth gear 88, the second clutch 62 connects the fifth connecting shaft 15 to the eighth gear 88, and the third clutch 63 disconnects the sixth connecting shaft 16 from the eighth gear 88;
seventh drive path (shown in fig. 8): the first clutch 61 disconnects the second connecting shaft 12 from the ninth gear 89, the second clutch 62 disconnects the fifth connecting shaft 15 from the ninth gear 89, and the third clutch 63 connects the sixth connecting shaft 16 to the eighth gear 88.
Correspondingly, the system generates the following working modes:
parking starting working mode:
the fifth transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor 1 does not work, the engine 2 and the generator 3 work, and the driving force of the generator 3 is transmitted to the engine 2 through the fifth transmission path.
And an idle power generation working mode:
the fifth transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor 1 does not work, the engine 2 and the generator 3 work, and the driving force of the engine 2 is transmitted to the generator 3 through the fifth transmission path.
Pure electric drive mode:
first gear: the first transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor 1 works, the engine 2 and the generator 3 do not work, and the driving force of the driving motor 1 is transmitted to the differential 4 through the first transmission path to drive wheels;
and (2) second: the second transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor 1 works, the engine 2 and the generator 3 do not work, and the driving force of the driving motor 1 is transmitted to the differential 4 through the second transmission path to drive wheels.
The engine directly drives the mode:
first gear: the third transmission path is communicated, other clutches and connecting pieces are disconnected, the engine 2 works, the driving motor 1 and the generator 3 do not work, the generator 3 rotates along with the rotation, and the driving force of the engine 2 is transmitted to the differential 4 through the third transmission path to drive wheels;
and (2) second: the fourth transmission path is communicated, other clutches and connecting pieces are disconnected, the engine 2 works, the driving motor 1 and the generator 3 do not work, the generator 3 rotates along with the rotation, and the driving force of the engine 2 is transmitted to the differential 4 through the fourth transmission path to drive wheels.
The generator directly drives the mode of operation:
first gear: the sixth transmission path is communicated, other clutches and connecting pieces are disconnected, the generator 3 works, the driving motor 1 and the engine 2 do not work, and the driving force of the generator 3 is transmitted to the differential 4 through the sixth transmission path to drive wheels;
and (2) second: the seventh transmission path is communicated, other clutches and connecting pieces are disconnected, the generator 3 works, the driving motor 1 and the engine 2 do not work, and the driving force of the generator 3 is transmitted to the differential 4 through the seventh transmission path to drive wheels.
Series drive mode of operation:
first gear: the fifth transmission path is communicated with the first transmission path, other clutches are disconnected, the engine 2, the driving motor 1 and the generator 3 work, the driving force of the engine 2 is transmitted to the generator 3 through the fifth transmission path, the generator 3 generates electricity and provides electric energy for the driving motor 1, and the driving force generated by the driving motor 1 is transmitted to the differential 4 through the first transmission path to drive wheels;
and (2) second: the fifth transmission path is communicated with the second transmission path, other clutches are disconnected, the engine 2, the driving motor 1 and the generator 3 work, the driving force of the engine 2 is transmitted to the generator 3 through the fifth transmission path, the generator 3 generates electricity and provides electric energy for the driving motor 1, and the driving motor 1 generates driving force and transmits the driving force to the differential 4 through the second transmission path to drive wheels.
The driving motor drives the working mode in parallel:
first gear: the first transmission path is communicated with the third transmission path, other clutches are disconnected, the engine 2 and the driving motor 1 work, the generator 3 does not work, the generator 3 rotates along with the rotation, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the third transmission path, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path, and wheels are driven together;
and (2) second gear: the second transmission path is communicated with the third transmission path, other clutches are disconnected, the engine 2 and the driving motor 1 work, the generator 3 does not work, the generator 3 rotates along with the rotation, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the third transmission path, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path, and wheels are driven together;
and (3) third gear: the first transmission path is communicated with the fourth transmission path, other clutches are disconnected, the engine 2 and the driving motor 1 work, the generator 3 does not work, the generator 3 rotates along with the rotation, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the fourth transmission path, and the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path to drive wheels together;
fourth gear: the second transmission path is communicated with the fourth transmission path, other clutches are disconnected, the engine 2 and the driving motor 1 work, the generator 3 does not work, the generator 3 rotates along with the rotation, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the fourth transmission path, and the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path to drive wheels together.
The driving motor and the generator are connected in parallel to drive the working mode:
first gear: the first transmission path is communicated with the sixth transmission path, other clutches are disconnected, the driving motor 1 and the generator 3 work, the engine 2 does not work, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the sixth transmission path to drive wheels together;
and (2) second gear: the second transmission path is communicated with the sixth transmission path, other clutches are disconnected, the driving motor 1 and the generator 3 work, the engine 2 does not work, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the sixth transmission path to drive wheels together;
and (3) third gear: the first transmission path is communicated with the seventh transmission path, other clutches are disconnected, the driving motor 1 and the generator 3 work, the engine 2 does not work, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path, the driving force of the generator 3 is transmitted to the differential mechanism 4 through the seventh transmission path, and wheels are driven together;
fourth gear: the second transmission path is communicated with the seventh transmission path, other clutches are disconnected, the driving motor 1 and the generator 3 work, the engine 2 does not work, the driving force of the driving motor 1 is transmitted to the differential 4 through the second transmission path, and the driving force of the generator 3 is transmitted to the differential 4 through the seventh transmission path to drive wheels together.
The engine and the generator are driven in parallel to work:
first gear: the third transmission path is connected with the sixth transmission path, other clutches and connecting pieces are disconnected, the engine 2 and the generator 3 work, the driving motor 1 does not work, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the third transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the sixth transmission path to drive wheels together;
and (2) second gear: the fourth transmission path is communicated with the seventh transmission path, other clutches and connecting pieces are disconnected, the engine 2 and the generator 3 work, the driving motor 1 does not work, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the fourth transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the seventh transmission path to drive wheels together.
The engine, the driving motor and the generator are connected in parallel to drive the working mode:
a first gear: the third transmission path, the sixth transmission path and the first transmission path are communicated, other clutches are disconnected, the engine 2, the driving motor 1 and the generator 3 work, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the third transmission path, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the sixth transmission path to drive wheels together;
and (2) second: the third transmission path, the sixth transmission path and the second transmission path are communicated, other clutches are disconnected, the engine 2, the driving motor 1 and the generator 3 work, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the third transmission path, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the sixth transmission path to drive wheels together;
and (3) third gear: the fourth transmission path, the seventh transmission path and the first transmission path are communicated, other clutches are disconnected, the engine 2, the driving motor 1 and the generator all work, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the fourth transmission path, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the seventh transmission path to drive wheels together;
fourth gear: the fourth transmission path, the seventh transmission path and the second transmission path are communicated, other clutches are disconnected, the engine 2, the driving motor 1 and the generator 3 work, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the fourth transmission path, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the seventh transmission path to drive wheels together.
The braking energy recovery working mode is as follows:
first gear: the first transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor 1 works, the engine 2 and the generator 3 do not work, and the driving force of the wheels is transmitted to the driving motor 1 through the differential 4 and the first transmission path, so that the driving motor 1 generates electricity;
and (2) second: the second transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor 1 works, the engine 2 and the generator 3 do not work, and the driving force of the wheels is transmitted to the driving motor 1 through the differential 4 and the second transmission path, so that the driving motor 1 generates electricity.
The following table is a power source and connecting piece state relation table of the system under different control modes:
Figure BDA0003688941660000131
Figure BDA0003688941660000141
Figure BDA0003688941660000151
the control method of the dual-motor hybrid power system comprises the dual-motor hybrid power system and an MCU which reads the working state of the vehicle and controls the elements to act.
When the MCU reads that the vehicle is in a parking starting working mode, the fifth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor 1 does not work, the engine 2 and the generator 3 work, and the driving force of the generator 3 is transmitted to the engine 2 through the fifth transmission path;
when the MCU reads that the vehicle is in an idle speed power generation working mode, the fifth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor 1 does not work, the engine 2 and the generator 3 work, and the driving force of the engine 2 is transmitted to the generator 3 through the fifth transmission path;
when the MCU reads that the vehicle is in a first gear of a braking energy recovery working mode, the first transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor 1 works, the engine 2 and the generator 3 do not work, the driving force of the wheels is transmitted to the driving motor 1 through the differential 4 and the first transmission path, and the driving motor 1 generates electricity;
when the MCU reads that the vehicle is in a second gear of a braking energy recovery working mode, the second transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor 1 works, the engine 2 and the generator 3 do not work, the driving force of the wheels is transmitted to the driving motor 1 through the differential 4 and the second transmission path, and the driving motor 1 generates electricity;
when the MCU reads that the vehicle is in a first gear of a pure electric driving working mode, the first transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor 1 works, the engine 2 and the generator 3 do not work, and the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path to drive wheels;
when the MCU reads that the vehicle is in the second gear of the pure electric driving working mode, the second transmission path is controlled to be communicated, other clutches and connecting pieces are disconnected, the driving motor 1 works, the engine 2 and the generator 3 do not work, and the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of an engine direct-drive working mode, the third transmission path is communicated and controls other clutches and connecting pieces to be disconnected, the engine 2 works, the driving motor 1 and the generator 3 do not work, the generator 3 rotates along with the rotation, and the driving force of the engine 2 is transmitted to the differential mechanism 4 through the third transmission path to drive wheels;
when the MCU reads that the vehicle is in the second gear of the engine direct-drive working mode, the fourth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the engine 2 works, the driving motor 1 and the generator 3 do not work, the generator 3 rotates along with the rotation, and the driving force of the engine 2 is transmitted to the differential 4 through the fourth transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of a generator direct-drive working mode, the sixth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the generator 3 works, the driving motor 1 and the engine 2 do not work, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the sixth transmission path to drive wheels;
when the MCU reads that the vehicle is in the second gear of the direct-drive working mode of the generator, the seventh transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the generator 3 works, the driving motor 1 and the engine 2 do not work, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the seventh transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of a series driving working mode, the fifth transmission path is controlled to be communicated with the first transmission path, other clutches are controlled to be disconnected, the engine 2, the driving motor 1 and the generator 3 work, the driving force of the engine 2 is transmitted to the generator 3 through the fifth transmission path, the generator 3 generates electricity and provides electric energy for the driving motor 1, and the driving force generated by the driving motor 1 is transmitted to the differential 4 through the first transmission path to drive wheels;
when the MCU reads that the vehicle is in a second gear of a series driving working mode, the fifth transmission path is controlled to be communicated with the second transmission path, other clutches are controlled to be disconnected, the engine 2, the driving motor 1 and the generator 3 all work, the driving force of the engine 2 is transmitted to the generator 3 through the fifth transmission path, the generator 3 generates electricity and provides electric energy for the driving motor 1, the driving motor 1 generates driving force and transmits the driving force to the differential mechanism 4 through the second transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of a parallel driving working mode of an engine and a driving motor, the first transmission path and the third transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine 2 and the driving motor 1 work, the generator 3 does not work, the generator 3 rotates along with the rotation, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the third transmission path, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path, and wheels are driven together;
when the MCU reads that the vehicle is in a state that the engine and the driving motor are connected in parallel to drive the working mode to be in a second gear, the second transmission path and the third transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine 2 and the driving motor 1 work, the generator 3 does not work, the generator 3 rotates along with the rotation, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the third transmission path, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path, and the wheels are driven together;
when the MCU reads that the vehicle is in a third gear of a parallel driving working mode of an engine and a driving motor, the first transmission path and the fourth transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine 2 and the driving motor 1 work, the generator does not work, the generator 3 rotates along with the rotation, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the fourth transmission path, and the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path to drive wheels together;
when the MCU reads that the vehicle is in a fourth gear of an engine and driving motor parallel driving working mode, the second transmission path is controlled to be communicated with the fourth transmission path, other clutches are controlled to be disconnected, the engine 2 and the driving motor 1 work, the generator 3 does not work, the generator 3 rotates along with the rotation, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the fourth transmission path, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path, and wheels are driven together;
when the MCU reads that the vehicle is in a first gear of a driving mode that the driving motor and the generator are connected in parallel, the first transmission path and the sixth transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor 1 and the generator 3 work, the engine 2 does not work, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a second gear of a driving mode in which the driving motor and the generator are connected in parallel, the second transmission path and the sixth transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor 1 and the generator 3 work, the engine 2 does not work, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a third gear of a driving mode in which the driving motor and the generator are connected in parallel, the first transmission path and the seventh transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor 1 and the generator 3 work, the engine 2 does not work, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the first transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the seventh transmission path to drive wheels together;
when the MCU reads that the vehicle is in a fourth gear of a driving mode in which the driving motor and the generator are connected in parallel, the second transmission path and the seventh transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor 1 and the generator 3 work, the engine 2 does not work, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the seventh transmission path to drive wheels together;
when the MCU reads that the vehicle is in a first gear of a parallel driving working mode of an engine and a generator, the third transmission path and the sixth transmission path are controlled, other clutches and connecting pieces are controlled to be disconnected, the engine 2 and the generator 3 work, the driving motor does not work 1, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the third transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a state that the engine and the generator are in parallel connection to drive the working mode to be in a second gear, the fourth transmission path and the seventh transmission path are controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the engine 2 and the generator 3 work, the driving motor 1 does not work, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the fourth transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the seventh transmission path to drive wheels together;
when the MCU reads that the vehicle is in a first gear of an engine, a driving motor and a generator parallel driving working mode, the third transmission path, the sixth transmission path and the first transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine 2, the driving motor 1 and the generator 3 work, the driving force of the engine 2 is transmitted to the differential 4 through the third transmission path, the driving force of the driving motor 1 is transmitted to the differential 4 through the first transmission path, and the driving force of the generator 3 is transmitted to the differential 4 through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a state that the engine, the driving motor and the generator are in parallel connection and drive the working mode to be in a second gear, the third transmission path, the sixth transmission path and the second transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine 2, the driving motor 1 and the generator 3 work, the driving force of the engine 2 is transmitted to the differential mechanism 4 through the third transmission path, the driving force of the driving motor 1 is transmitted to the differential mechanism 4 through the second transmission path, and the driving force of the generator 3 is transmitted to the differential mechanism 4 through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a third gear of an engine, a driving motor and a generator parallel driving working mode, the fourth transmission path, the seventh transmission path and the first transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine 2, the driving motor 1 and the generator 3 work, the driving force of the engine 2 is transmitted to the differential 4 through the fourth transmission path, the driving force of the driving motor 1 is transmitted to the differential 4 through the first transmission path, and the driving force of the generator 3 is transmitted to the differential 4 through the seventh transmission path to drive wheels together;
when the MCU reads that the vehicle is in a fourth gear of an engine, a driving motor and a generator parallel driving working mode, the fourth transmission path, the seventh transmission path and the second transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine 2, the driving motor 1 and the generator 3 work, the driving force of the engine 2 is transmitted to the differential 4 through the fourth transmission path, the driving force of the driving motor 1 is transmitted to the differential 4 through the second transmission path, and the driving force of the generator 3 is transmitted to the differential 4 through the seventh transmission path to drive wheels together.
The vehicle with the dual-motor hybrid power system is driven by the dual-motor hybrid power system.

Claims (10)

1. A dual-motor hybrid power system is characterized by comprising a driving motor, an engine, a generator, a differential, a first connecting piece, a clutch group, a shaft tooth group and a torque-limiting shock absorber;
a rotor of the driving motor is fixedly connected with a first connecting shaft, a first gear and a fourth gear are sleeved on the first connecting shaft in a clearance mode, the first connecting piece is arranged between the first gear and the fourth gear in a transmission mode, the first connecting piece is connected with the differential in a transmission mode through a fourth connecting shaft, and a second gear, a fifth gear and a ninth gear are sleeved on the fourth connecting shaft;
the engine is in transmission connection with the torque-limiting vibration absorber, the clutch group comprises a first clutch, a second clutch and a third clutch, and the torque-limiting vibration absorber is in transmission connection with the first clutch through a second connecting shaft;
a rotor of the generator is fixedly connected with a third connecting shaft, and a seventh gear is sleeved on the third connecting shaft;
the second clutch is in transmission connection with a fifth connecting shaft, and a third gear is sleeved on the fifth connecting shaft;
the third clutch is in transmission connection with a sixth connecting shaft, the sixth connecting shaft is sleeved outside the fifth connecting shaft in a clearance manner, a sixth gear is sleeved on the sixth connecting shaft, and the sixth connecting shaft is in transmission connection with the third connecting shaft through an eighth gear;
the first gear and the third gear are respectively meshed with the second gear, the fourth gear and the sixth gear are respectively meshed with the fifth gear, a differential gear on the differential is meshed with the ninth gear, and the seventh gear is meshed with the eighth gear;
the system includes a first transmission path: the first connecting shaft is connected with the first gear;
a second transmission path: the first connecting shaft is connected with the fourth gear;
a third transmission path: the first clutch is connected with the second connecting shaft and the eighth gear, the second clutch is connected with the fifth connecting shaft and the eighth gear, and the third clutch is disconnected with the sixth connecting shaft and the eighth gear;
a fourth transmission path: the first clutch is connected with the second connecting shaft and the eighth gear, the second clutch is disconnected with the fifth connecting shaft and the eighth gear, and the third clutch is connected with the sixth connecting shaft and the eighth gear;
a fifth transmission path: the first clutch is connected with the second connecting shaft and the eighth gear;
a sixth transmission path: the first clutch disconnects the second connecting shaft and the eighth gear, the second clutch connects the fifth connecting shaft and the eighth gear, and the third clutch disconnects the sixth connecting shaft and the eighth gear;
a seventh transmission path: the first clutch disconnects the second connecting shaft and the ninth gear, the second clutch disconnects the fifth connecting shaft and the ninth gear, and the third clutch connects the sixth connecting shaft and the eighth gear.
2. A dual motor hybrid system as claimed in claim 1, characterized in that it comprises the following operating modes:
parking starting working mode: the fifth transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor does not work, the engine and the generator work, and the driving force of the generator is transmitted to the engine through the fifth transmission path;
and (3) idle speed power generation working mode: the fifth transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor does not work, the engine and the generator work, and the driving force of the engine is transmitted to the generator through the fifth transmission path;
the braking energy recovery working mode comprises:
first gear: the first transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the wheels is transmitted to the driving motor through the differential and the first transmission path to enable the driving motor to generate electricity;
and (2) second: the second transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the wheels is transmitted to the driving motor through the differential and the second transmission path to enable the driving motor to generate electricity;
the system comprises a pure electric drive working mode:
a first gear: the first transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels;
and (2) second: the second transmission path is communicated, other clutches and connecting pieces are disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels.
3. The dual-motor hybrid system as recited in claim 1, comprising an engine direct drive operating mode:
first gear: the third transmission path is communicated, other clutches and connecting pieces are disconnected, the engine works, the driving motor and the generator do not work, the generator rotates along with the rotation, and the driving force of the engine is transmitted to the differential mechanism through the third transmission path to drive wheels;
and (2) second: the fourth transmission path is communicated, other clutches and connecting pieces are disconnected, the engine works, the driving motor and the generator do not work, the generator rotates along with the rotation, and the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path to drive wheels;
the system comprises a generator direct-drive working mode:
first gear: the sixth transmission path is communicated, other clutches and connecting pieces are disconnected, the generator works, the driving motor and the engine do not work, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels;
and (2) second: the seventh transmission path is communicated, other clutches and connecting pieces are disconnected, the generator works, the driving motor and the engine do not work, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels.
4. The dual-motor hybrid system as claimed in claim 1, comprising a series drive mode of operation:
first gear: the fifth transmission path is communicated with the first transmission path, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the generator through the fifth transmission path, the generator generates electricity and provides electric energy for the driving motor, and the driving force generated by the driving motor is transmitted to the differential through the first transmission path to drive wheels;
and (2) second gear: the fifth transmission path is communicated with the second transmission path, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the generator through the fifth transmission path, the generator generates electricity and provides electric energy for the driving motor, and the driving motor generates driving force and transmits the driving force to the differential through the second transmission path to drive wheels.
5. The dual motor hybrid system of claim 1, comprising an engine and drive motor parallel drive mode of operation:
first gear: the first transmission path is communicated with the third transmission path, other clutches are disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels together;
and (2) second: the second transmission path is communicated with the third transmission path, other clutches are disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels together;
third gear: the first transmission path is communicated with the fourth transmission path, other clutches are disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels together;
fourth gear: the second transmission path is communicated with the fourth transmission path, other clutches are disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation of the generator, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels together.
6. The dual motor hybrid system of claim 1, comprising a drive motor in parallel with the generator drive mode of operation:
first gear: the first transmission path is communicated with the sixth transmission path, other clutches are disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
and (2) second: the second transmission path is communicated with the sixth transmission path, other clutches are disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
and (3) third gear: the first transmission path is communicated with the seventh transmission path, other clutches are disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path, and the wheels are driven together;
fourth gear: the second transmission path is communicated with the seventh transmission path, other clutches are disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together.
7. The dual motor hybrid system of claim 1, comprising an engine and generator parallel drive mode of operation:
first gear: the driving force of the engine is transmitted to the differential mechanism through the third transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
and (2) second: the fourth transmission path is communicated with the seventh transmission path, other clutches and connecting pieces are disconnected, the engine and the generator work, the driving motor does not work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together.
8. The dual motor hybrid system of claim 1, comprising an engine, a drive motor, and a generator parallel drive mode of operation:
first gear: the third transmission path, the sixth transmission path and the first transmission path are communicated, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
and (2) second: the third transmission path, the sixth transmission path and the second transmission path are communicated, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
and (3) third gear: the fourth transmission path, the seventh transmission path and the first transmission path are communicated, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to jointly drive wheels;
fourth gear: the fourth transmission path, the seventh transmission path and the second transmission path are communicated, other clutches are disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together.
9. A control method of a two-motor hybrid system, comprising the two-motor hybrid system according to claim 1, further comprising an MCU which reads an operating state of a vehicle and controls the operation of components;
when the MCU reads that the vehicle is in a parking starting working mode, the fifth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor does not work, the engine and the generator work, and the driving force of the generator is transmitted to the engine through the fifth transmission path;
when the MCU reads that the vehicle is in an idle speed power generation working mode, the fifth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor does not work, the engine and the generator work, and the driving force of the engine is transmitted to the generator through the fifth transmission path;
when the MCU reads that the vehicle is in a first gear of a braking energy recovery working mode, the first transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the wheels is transmitted to the driving motor through the differential and the first transmission path to enable the driving motor to generate electricity;
when the MCU reads that the vehicle is in a second gear of a braking energy recovery working mode, the second transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the wheels is transmitted to the driving motor through the differential and the second transmission path to enable the driving motor to generate electricity;
when the MCU reads that the vehicle is in a first gear of a pure electric driving working mode, the first transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels;
when the MCU reads that the vehicle is in a pure electric drive working mode at the second gear, the second transmission path is controlled to be communicated, other clutches and connecting pieces are disconnected, the driving motor works, the engine and the generator do not work, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of an engine direct-drive working mode, the third transmission path is communicated and controls other clutches and connecting pieces to be disconnected, the engine works, the driving motor and the generator do not work, the generator rotates along with the rotation, and the driving force of the engine is transmitted to the differential mechanism through the third transmission path to drive wheels;
when the MCU reads that the vehicle is in a second gear of an engine direct-drive working mode, the fourth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the engine works, the driving motor and the generator do not work, the generator rotates along with the rotation, and the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of a direct-drive working mode of the generator, the sixth transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the generator works, the driving motor and the engine do not work, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels;
when the MCU reads that the vehicle is in a second gear of a direct-drive working mode of the generator, the seventh transmission path is controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the generator works, the driving motor and the engine do not work, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of a series driving working mode, the fifth transmission path is controlled to be communicated with the first transmission path, other clutches are controlled to be disconnected, the engine, the driving motor and the generator all work, the driving force of the engine is transmitted to the generator through the fifth transmission path, the generator generates electricity and provides electric energy for the driving motor, and the driving force generated by the driving motor is transmitted to the differential through the first transmission path to drive wheels;
when the MCU reads that the vehicle is in a second gear of a series driving working mode, the fifth transmission path and the second transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine, the driving motor and the generator all work, the driving force of the engine is transmitted to the generator through the fifth transmission path, the generator generates electricity and provides electric energy for the driving motor, and the driving motor generates driving force and transmits the driving force to the differential mechanism through the second transmission path to drive wheels;
when the MCU reads that the vehicle is in a first gear of a parallel driving working mode of an engine and a driving motor, the first transmission path and the third transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels together;
when the MCU reads that the vehicle is in a state that the engine and the driving motor are connected in parallel to drive the working mode to be in a second gear, the second transmission path and the third transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation of the generator, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels together;
when the MCU reads that the vehicle is in a third gear of a parallel driving working mode of an engine and a driving motor, the first transmission path and the fourth transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path to drive wheels together;
when the MCU reads that the vehicle is in a fourth gear of a parallel driving working mode of an engine and a driving motor, the second transmission path and the fourth transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine and the driving motor work, the generator does not work, the generator rotates along with the rotation of the generator, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path to drive wheels together;
when the MCU reads that the vehicle is in a first gear of a driving mode that the driving motor and the generator are connected in parallel, the first transmission path and the sixth transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a second gear of a parallel driving working mode of a driving motor and a generator, the second transmission path and the sixth transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a third gear of a driving mode that the driving motor and the generator are connected in parallel, the first transmission path and the seventh transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together;
when the MCU reads that the vehicle is in a fourth gear of a driving working mode that the driving motor and the generator are connected in parallel, the second transmission path and the seventh transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the driving motor and the generator work, the engine does not work, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together;
when the MCU reads that the vehicle is in a first gear of a parallel driving working mode of an engine and a generator, the third transmission path and the sixth transmission path are controlled, other clutches and connecting pieces are controlled to be disconnected, the engine and the generator work, a driving motor does not work, the driving force of the engine is transmitted to a differential mechanism through the third transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a state that the engine and the generator are in parallel connection to drive the working mode to be in a second gear, the fourth transmission path and the seventh transmission path are controlled to be communicated, other clutches and connecting pieces are controlled to be disconnected, the engine and the generator work, the driving motor does not work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together;
when the MCU reads that the vehicle is in a first gear of a parallel driving working mode of an engine, a driving motor and a generator, the third transmission path, the sixth transmission path and the first transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine, the driving motor and the generator all work, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path, and wheels are driven together;
when the MCU reads that the vehicle is in a second gear of a parallel driving working mode of an engine, a driving motor and a generator, the third transmission path, the sixth transmission path and the second transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine, the driving motor and the generator work, the driving force of the engine is transmitted to the differential mechanism through the third transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the sixth transmission path to drive wheels together;
when the MCU reads that the vehicle is in a third gear of a parallel driving working mode of an engine, a driving motor and a generator, the fourth transmission path, the seventh transmission path and the first transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine, the driving motor and the generator all work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the first transmission path, the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path, and wheels are driven together;
when the MCU reads that the vehicle is in a fourth gear of a parallel driving working mode of an engine, a driving motor and a generator, the fourth transmission path, the seventh transmission path and the second transmission path are controlled to be communicated, other clutches are controlled to be disconnected, the engine, the driving motor and the generator all work, the driving force of the engine is transmitted to the differential mechanism through the fourth transmission path, the driving force of the driving motor is transmitted to the differential mechanism through the second transmission path, and the driving force of the generator is transmitted to the differential mechanism through the seventh transmission path to drive wheels together.
10. A two-motor hybrid vehicle, characterized in that it is driven by the two-motor hybrid system according to any one of claims 1 to 8.
CN202210657707.4A 2022-06-10 2022-06-10 Dual-motor hybrid power system, control method and vehicle Pending CN114987189A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116552228A (en) * 2023-06-09 2023-08-08 中国第一汽车股份有限公司 Hybrid power system, vehicle control method and vehicle

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Application publication date: 20220902