CN112895880A - Hybrid power transmission device of double-motor rear-drive vehicle - Google Patents

Hybrid power transmission device of double-motor rear-drive vehicle Download PDF

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Publication number
CN112895880A
CN112895880A CN202110403005.9A CN202110403005A CN112895880A CN 112895880 A CN112895880 A CN 112895880A CN 202110403005 A CN202110403005 A CN 202110403005A CN 112895880 A CN112895880 A CN 112895880A
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China
Prior art keywords
shaft
gear
planetary gear
reduction gear
rotor shaft
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Granted
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CN202110403005.9A
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Chinese (zh)
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CN112895880B (en
Inventor
韩兵
张天锷
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Shanghai Synetec Power System Co ltd
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Shanghai Synetec Power System Co ltd
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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
    • B60K6/365—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 with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—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
    • B60K6/48—Parallel type
    • B60K6/485—Motor-assist 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
    • B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B60K2006/266—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators with two coaxial motors or generators
    • 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)
  • Hybrid Electric Vehicles (AREA)

Abstract

The invention discloses a double-motor rear-drive vehicle hybrid power transmission device which comprises a planetary gear power splitting mechanism, a first shaft, a first rotor shaft and a second rotor shaft, wherein a generator is positioned between the planetary gear power splitting mechanism and a driving motor, the planetary gear power splitting mechanism comprises a first inner gear ring connected with the first rotor shaft, a second inner gear ring connected with the first shaft, a planet carrier, a first planetary gear rotatably arranged on the planet carrier and meshed with the first inner gear ring, and a second planetary gear meshed with the second inner gear ring and synchronously rotating with the first planetary gear, the planet carrier is connected with a second shaft, and the first rotor shaft and the second rotor shaft are sleeved on the second shaft. The dual-motor rear-drive vehicle hybrid power transmission device adopts the planetary gear mechanism as the power dividing mechanism, realizes the power dividing working mode, has obvious oil saving effect and reduces the whole vehicle oil consumption of the rear-drive vehicle.

Description

Hybrid power transmission device of double-motor rear-drive vehicle
Technical Field
The invention belongs to the technical field of vehicle power transmission, and particularly relates to a dual-motor rear-drive vehicle hybrid power transmission device.
Background
The motorization of the automobile power system becomes a development trend, and the hybrid power system has the advantages of mature technology, low product cost and the like, is produced in large scale and accepted by the market, and becomes an important energy-saving technical route at the present stage. The power split hybrid power system with double motors can realize the optimization of the working range of the engine and reduce the oil consumption of the whole vehicle; the technical route is represented by THS hybrid power products of Toyota automobile company and is successful in the market.
The scheme of the hybrid system used by the existing rear-drive vehicle is that a single-motor P2 hybrid system and a double-motor series-parallel hybrid system are added to the existing automatic gearbox. The hybrid schemes generally have the problems of higher cost, unobvious oil saving effect and the like.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a hybrid power transmission device of a double-motor rear-drive vehicle, and aims to reduce the whole oil consumption of the rear-drive vehicle.
In order to achieve the purpose, the invention adopts the technical scheme that: the dual-motor rear-drive vehicle hybrid power transmission device comprises a planetary gear power splitting mechanism, a first shaft, a first rotor shaft and a second rotor shaft, wherein the first shaft is used for receiving power from an engine, the first rotor shaft is connected with a rotor of a generator, the second rotor shaft is connected with a rotor of a driving motor, the generator is positioned between the planetary gear power splitting mechanism and the driving motor, the planetary gear power splitting mechanism comprises a first inner gear ring connected with the first rotor shaft, a second inner gear ring connected with the first shaft, a planet carrier, a first planetary gear and a second planetary gear, the first planetary gear is rotatably arranged on the planet carrier and meshed with the first inner gear ring, the second planetary gear is meshed with the second inner gear ring and synchronously rotates with the first planetary gear, the planet carrier is connected with a second shaft, and the first rotor shaft and the second rotor shaft are sleeved on the second.
The second shaft is provided with a first reduction gear, the second rotor shaft is provided with a second reduction gear, the first reduction gear is meshed with a third reduction gear, the second reduction gear is meshed with a fourth reduction gear, and the third reduction gear and the fourth reduction gear are fixedly installed on the connecting shaft.
The first reduction gear and the second reduction gear are located between the generator and the drive motor.
The first ring gear is located between the generator and the second ring gear.
The dual-motor rear-drive vehicle hybrid power transmission device adopts the planetary gear mechanism as the power dividing mechanism, realizes the power dividing working mode, has obvious oil saving effect and reduces the whole vehicle oil consumption of the rear-drive vehicle.
Drawings
The description includes the following figures, the contents shown are respectively:
FIG. 1 is a schematic structural diagram of a dual motor rear drive vehicle hybrid transmission of the present invention;
labeled as: 1. a first shaft; 2. a second shaft; 3. a first ring gear; 4. a second ring gear; 5. a first planetary gear; 6. a second planetary gear; 7. a planet carrier; 8. a first rotor shaft; 10. a fourth reduction gear; 11. a third reduction gear; 12. a first reduction gear; 13. a connecting shaft; 14. a second reduction gear; 16. a rotor of a generator; 17. a stator of the generator; 18. a rotor of the drive motor; 19. a stator of the driving motor; 22. a second rotor shaft.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
It should be noted that, in the following embodiments, the terms "first", "second", "third" and "fourth" do not represent absolute differences in structure and/or function, nor represent a sequential execution order, but merely for convenience of description.
As shown in fig. 1, the present invention provides a dual motor rear drive vehicle hybrid transmission including a planetary gear power split mechanism, a first shaft 1 for receiving power from an engine, a first rotor shaft 8 connected to a rotor of a generator, and a second rotor shaft 22 connected to a rotor of a driving motor, the generator being located between the planetary gear power split mechanism and the driving motor, the planetary gear power split mechanism including a first ring gear 3 connected to the first rotor shaft 8, the planetary gear set comprises a second inner gear ring 4 connected with the first shaft 1, a planetary carrier 7, a first planetary gear 5 which is rotatably arranged on the planetary carrier 7 and is meshed with the first inner gear ring 3, and a second planetary gear 6 which is meshed with the second inner gear ring 4 and is synchronously rotated with the first planetary gear 5, wherein the planetary carrier 7 is connected with the second shaft 2, and a first rotor shaft 8 and a second rotor shaft 22 are sleeved on the second shaft 2.
Specifically, as shown in fig. 1, the first planetary gear 5 and the second planetary gear 6 are cylindrical gears, and the first planetary gear 5 and the second planetary gear 6 are fixedly connected together to form a stepped planetary gear set and can rotate on the carrier 7 and revolve around the axis of the carrier 7, and the stepped planetary gear set is provided in plurality and all the stepped planetary gear sets are arranged on the carrier 7 in the circumferential direction. The planet carrier 7 is coaxially arranged with the first shaft 1, the second shaft 2, the first inner gear ring 3 and the second inner gear ring 4 are of circular ring structures, a circle of gear teeth is arranged inside the first inner gear ring 3, a circle of gear teeth is arranged inside the second inner gear ring 4, all the first planetary gears 5 are positioned in a central hole of the first inner gear ring 3, the first planetary gears 5 are meshed with the gear teeth of the first inner gear ring 3, all the second planetary gears 6 are positioned in a central hole of the second inner gear ring 4, and the second planetary gears 6 are meshed with the gear teeth of the second inner gear ring 4. The second inner gear ring 4 is directly connected with the first shaft 1, a rotor 16 of the generator is fixedly connected with one end of the first rotor shaft 8, the first inner gear ring 3 is fixedly connected with the other end of the first rotor shaft 8, the first shaft 1 is used as an input shaft of the transmission device, the second shaft 2 is used as an output shaft of the transmission device, the first shaft 1 is fixedly connected with an output shaft of the engine, the planet carrier 7 is fixedly connected with one end of the second shaft 2, and the other end of the second shaft 2 is a power output end of the dual-motor rear-drive vehicle hybrid power transmission device. The first rotor shaft 8 is a hollow shaft, the second shaft 2 penetrates through the first rotor shaft 8, the second shaft 2 and the first rotor shaft 8 are coaxially arranged, the length of the first rotor shaft 8 is smaller than that of the second shaft 2, the second shaft 2 serves as an output shaft of the planetary gear power splitting mechanism, the second rotor shaft 22 is a hollow shaft, the second shaft 2 penetrates through the second rotor shaft 22, the second shaft 2 and the second rotor shaft 22 are coaxially arranged, the first shaft 1 and the second shaft 2 are coaxially arranged, and the length of the second shaft 2 is larger than that of the first rotor shaft 8 and that of the second rotor shaft 22.
As shown in fig. 1, a first reduction gear 12 is disposed on the second shaft 2, a second reduction gear 14 is disposed on the second rotor shaft 22, the first reduction gear 12 is engaged with a third reduction gear 11, the second reduction gear 14 is engaged with a fourth reduction gear 10, the third reduction gear 11 and the fourth reduction gear 10 are fixedly mounted on a connecting shaft 13, the connecting shaft 13 is parallel to the second shaft 2, and the third reduction gear 11 and the fourth reduction gear 10 rotate synchronously. The planetary gear power split mechanism is located between the engine and the generator, the first reduction gear 12 and the second reduction gear 14 are located between the generator and the driving motor, and the first ring gear 3 is located between the generator and the second ring gear 4. The diameter of the first reduction gear 12 is larger than that of the third reduction gear 11, and the diameter of the second reduction gear 14 is smaller than that of the fourth reduction gear 10.
The torque output by the driving motor is transmitted to the second shaft 2 through the second reduction gear 14, the fourth reduction gear 10, the third reduction gear 11 and the first reduction gear 12 in sequence, and then the vehicle is driven to run through a main speed reducer of a vehicle chassis. The stator 17 of the generator and the stator 19 of the drive motor are fixed to the housing of the transmission. When the parts are arranged, the second reduction gear 14, the fourth reduction gear 10, the third reduction gear 11 and the first reduction gear 12 are arranged between the generator and the output end of the second shaft 2, and the output end of the second shaft 2 is provided with a flange plate connected with a main reducer.
When the vehicle runs in a pure electric mode, the vehicle is driven by a driving motor alone, and the power transmission path generated by the driving motor is from the second reduction gear 14, the fourth reduction gear 10, the third reduction gear 11, the first reduction gear 12 to the second shaft 2. At the moment, the generator realizes the zero rotating speed of the first shaft 1 through self rotating speed control, the first shaft 1 does not rotate, and the engine is prevented from being dragged during pure electric driving.
When the vehicle enters a hybrid power mode from pure electric driving, the dual-motor rear-drive vehicle hybrid power transmission device works in a power split driving mode. The first shaft 1, the first rotor shaft 8 and the second shaft 2 form a three-shaft transmission system, and the planetary gear power splitting mechanism realizes power coupling among an engine, a generator and power output. The generator works in a positive rotating speed negative torque state, obtains power from the engine end and converts the power into electric energy for a driving motor to use or stores the electric energy into a battery, so that part of the power of the engine is transmitted in the form of electric power, the rest of the power is transmitted in a mechanical path, and a power system shows a power splitting characteristic when working. The generator enables the engine to work in a low oil consumption region through self rotating speed adjustment, so that the engine is prevented from being influenced by running conditions. When the hybrid electric vehicle runs in a hybrid mode, the engine works in a low oil consumption region, and the stepless speed regulation of the whole vehicle is realized through the rotation speed control of the generator and the driving motor.
The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.

Claims (4)

1. The dual-motor rear-drive vehicle hybrid power transmission device comprises a planetary gear power splitting mechanism, a first shaft for receiving power from an engine, a first rotor shaft connected with a rotor of a generator and a second rotor shaft connected with a rotor of a driving motor, wherein the generator is positioned between the planetary gear power splitting mechanism and the driving motor, and the dual-motor rear-drive vehicle hybrid power transmission device is characterized in that: the planetary gear power dividing mechanism comprises a first inner gear ring connected with the first rotor shaft, a second inner gear ring connected with the first shaft, a planet carrier, a first planetary gear rotatably arranged on the planet carrier and meshed with the first inner gear ring, and a second planetary gear meshed with the second inner gear ring and synchronously rotating with the first planetary gear, the planet carrier is connected with the second shaft, and the first rotor shaft and the second rotor shaft are sleeved on the second shaft.
2. The dual-motor rear-drive vehicle hybrid transmission of claim 1, characterized in that: the second shaft is provided with a first reduction gear, the second rotor shaft is provided with a second reduction gear, the first reduction gear is meshed with a third reduction gear, the second reduction gear is meshed with a fourth reduction gear, and the third reduction gear and the fourth reduction gear are fixedly installed on the connecting shaft.
3. The dual-motor rear-drive vehicle hybrid transmission of claim 2, characterized in that: the first reduction gear and the second reduction gear are located between the generator and the drive motor.
4. The dual-motor rear-drive vehicle hybrid transmission of claim 2, characterized in that: the first ring gear is located between the generator and the second ring gear.
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