CN112046267A - Input split-flow type two-gear transmission system for hybrid electric vehicle and vehicle - Google Patents

Input split-flow type two-gear transmission system for hybrid electric vehicle and vehicle Download PDF

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Publication number
CN112046267A
CN112046267A CN202010731760.5A CN202010731760A CN112046267A CN 112046267 A CN112046267 A CN 112046267A CN 202010731760 A CN202010731760 A CN 202010731760A CN 112046267 A CN112046267 A CN 112046267A
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motor
gear
brake
engine
speed
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CN202010731760.5A
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CN112046267B (en
Inventor
赵升吨
朱淑苗
冯智彦
李诗桐
范淑琴
蒋飞
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Xian Jiaotong University
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Xian Jiaotong University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/36Arrangement 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
    • B60K6/365Arrangement 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/24Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/26Arrangement 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/36Arrangement 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/38Arrangement 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles

Abstract

The invention belongs to the technical field of automobile hybrid power, and particularly relates to an input split type two-gear transmission system for a hybrid automobile and the automobile. An input split-flow type two-gear transmission system for a hybrid electric vehicle comprises an engine, a motor, a starting and generating integrated machine, a clutch, a brake, a planetary gear train, a speed reducing mechanism and a differential mechanism; the clutch comprises a motor clutch; the brake comprises an engine brake and a motor brake; the planetary gear train comprises a sun gear, a planet carrier and an inner gear ring; the engine is connected with the planet carrier through an engine brake, the motor is connected with the inner gear ring through a motor clutch and a motor brake, and the starting and power generating integrated machine is connected with the sun gear through a single-speed-ratio gear; the output torque of the inner gear ring is coupled with the torque of the motor, and then is transmitted to wheels after passing through a speed reducing mechanism and a differential mechanism. The invention can reduce oil consumption and emission while ensuring the performance of the whole vehicle, and is easy to arrange.

Description

Input split-flow type two-gear transmission system for hybrid electric vehicle and vehicle
Technical Field
The invention belongs to the technical field of automobile hybrid power, and particularly relates to an input split type two-gear transmission system for a hybrid automobile and the automobile.
Background
Under the background of serious environmental pollution caused by automobile exhaust, decreased petroleum reserve and increased petroleum price, the manufacturing industry begins to search for proper energy to replace gasoline and diesel oil to drive vehicles, thereby improving the energy structure. As a transition vehicle type from a fuel vehicle to an electric vehicle, the hybrid electric vehicle uses a motor to perform peak load leveling on the output power of an engine, and can remarkably reduce energy consumption and emission while ensuring the dynamic property of the fuel vehicle.
The reasonably designed transmission system is the basis of the hybrid automobile with low emission and high efficiency. The series hybrid electric vehicle decouples the rotating speed of the engine through the generator, so that the engine can always work at the optimal working point and simultaneously has the defect of energy conversion of mechanical energy-electric energy-mechanical energy; although the parallel connection type engine has no defects of electromechanical energy conversion, the control is complex, the size is large, and the engine cannot be always in the optimal working point.
The series-parallel hybrid power system combines the advantages of the series system and the parallel system, saves energy, reduces emission, has high operating efficiency, can fully exert the characteristics of low speed and high torque of the motor, and reduces the requirement on the power of the engine. Many configurations related to a series-parallel hybrid system exist, but the configurations meet excellent driving performance, and meanwhile, the configurations are often accompanied by complicated structures, poor robustness control and difficult arrangement.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides an input split-flow type two-gear transmission system for a hybrid vehicle, which can reduce oil consumption and emission and is easy to arrange while ensuring the performance of the whole vehicle.
The technical scheme for realizing the functions is as follows: an input split type two-gear transmission system for a hybrid electric vehicle is characterized in that:
the starting and generating integrated machine comprises an engine, a motor, a starting and generating integrated machine, a clutch, a brake, a planetary gear train, a speed reducing mechanism and a differential mechanism;
the clutch comprises a motor clutch;
the brake comprises an engine brake and a motor brake;
the planetary gear train comprises a sun gear, a planet carrier and an inner gear ring;
the engine is connected with the planet carrier through an engine brake, the motor is connected with the inner gear ring through a motor clutch and a motor brake, and the starting and power generating integrated machine is connected with the sun gear through a single-speed-ratio gear;
the output torque of the inner gear ring is coupled with the torque of the motor, and then is transmitted to wheels after passing through a speed reducing mechanism and a differential mechanism.
Further, the speed reducing mechanism comprises a first gear set, a second gear set, a combination sleeve and a main speed reducer; the combination sleeve can enable the first gear set or the second gear set to be combined with the main speed reducer to achieve two-gear speed ratio, and the main speed reducer is connected with the differential mechanism.
Further, the reduction mechanism includes an intermediate gear and a two-speed final drive.
Further, the system also comprises a battery pack and an inverter/transformer; the starting and power generating integrated machine and the motor are respectively connected with the battery pack through the inverter/transformer.
Further, the engine and the motor are arranged coaxially, and the starter-generator shaft and the motor shaft are arranged coaxially.
In addition, the invention also provides an automobile, which is characterized in that:
the input split type two-gear transmission system for the hybrid electric vehicle comprises the input split type two-gear transmission system for the hybrid electric vehicle.
The invention has the advantages that:
(1) the starting and power generation integrated machine is decelerated by the single-speed-ratio gear, so that the running efficiency of the starting and power generation integrated machine can be improved, the overall configuration is easy to arrange, a multi-shaft layout is formed, and the single shaft is prevented from being too long;
(2) the invention uses the planetary gear train to carry out power shunt on the engine, and uses the starting and power generation integrated machine to carry out speed regulation on the engine, so that the engine always runs at the optimal working point;
(3) the invention can realize eight working modes including a static starting mode, a running starting mode, an idle speed power generation mode, an energy recovery mode, a series driving mode, a hybrid driving mode and two pure electric modes by combining the planetary gear train, the clutch and the brake; the economy of the whole vehicle can be obviously improved by matching the most suitable working mode according to different vehicle conditions;
(4) the two-gear speed ratio gear set is adopted, so that the maximum torque and the highest rotating speed of the motor required by the system are reduced, the power performance of the vehicle is slightly reduced, and the economy of the vehicle is obviously improved.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a schematic view of power transmission in a stationary start mode according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of power transmission in a start-up mode during traveling according to embodiment 1 of the invention;
FIG. 4 is a schematic diagram of power transmission in the idle power generation mode in accordance with embodiment 1 of the present invention;
FIG. 5 is a schematic view of energy recovery mode power transmission in accordance with embodiment 1 of the present invention;
FIG. 6 is a schematic view of power transmission in the series drive mode according to embodiment 1 of the invention;
FIG. 7 is a schematic view of power transmission in a hybrid drive mode according to embodiment 1 of the invention;
FIG. 8 is a schematic power transmission diagram in the electric only mode according to embodiment 1 of the present invention;
FIG. 9 is a schematic diagram of the pure electric mode two power transmission in the embodiment 1 of the present invention;
FIG. 10 is a schematic structural view of a low gear stage according to embodiment 2 of the present invention;
fig. 11 is a schematic structural view of a high gear in embodiment 2 of the present invention.
The reference numbers in the figures illustrate: 1. a wheel; 2. a differential mechanism; 3. a half shaft; 4. a main reducer; 5. a first gear set; 6. an electric motor; 7. a battery pack; 8. an inverter/transformer; 9. starting the power generation integrated machine; 10. a single speed ratio gear; 11. an engine; 12. an engine brake; 13. a sun gear; 14. a planet carrier; 15. an inner gear ring; 16. a motor brake; 17. a motor clutch; 18. a second gear set; 19. a coupling sleeve; 20. a short gear ring; 21. a long gear ring; 22. an intermediate gear; 23. and (4) shifting a fork.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Example 1
Referring to fig. 1, an input split two-gear transmission system for a hybrid vehicle includes an engine 11, a motor 6, a starter-generator all-in-one machine 9, a clutch 17, a brake, a planetary gear train including a sun gear 13, a planetary gear, a carrier 14, and an annulus gear 15, a coupling sleeve 19, a final drive 4, and a differential 2, and the brake includes an engine brake 12 and a motor brake 16.
The engine 11 is connected with the planet carrier 14 through the engine brake 12, the motor 6 is connected with the inner gear ring 15 through the motor clutch 17 and the motor brake 16, and the integrated starting and generating machine 9 is connected with the sun gear 13 through the single-speed-ratio gear 10.
Referring to fig. 1, the integrated starter-generator 9 is connected to the battery pack 7 through an inverter/transformer 8, and the motor 6 is connected to the battery pack 7 through the inverter/transformer 8.
Referring to fig. 1, the coupling sleeve 19 may be combined with the first and second gear sets 5 and 18 to realize a two-speed ratio. Further, the idler gear 22 and the two-speed final drive may be used instead of the two-speed ratio gear set and the single-speed final drive 4, with the same operational effect.
Referring to fig. 1, the output torque of the ring gear 15 is coupled with the torque of the electric motor 6, and then transmitted to the wheel 1 through the first gear set 5 or the second gear set 18, the final drive 4, the differential 2 and the half shaft 3.
Preferably, the engine 11 and the motor 6 are coaxially arranged, and the shaft of the starting and power generating integrated machine 9 and the shaft of the motor 6 are arranged in a non-coaxial parallel manner, so that the transmission system is compact in structure, a multi-shaft layout is formed, and the single shaft is prevented from being too long.
Referring to fig. 1 to 9, the input split two speed transmission system of the present invention can realize 8 operation modes including a stationary start mode, a driving start mode, an idle power generation mode, an energy recovery mode, a series driving mode, a hybrid driving mode and two pure electric modes by combining a planetary gear train with a clutch and a brake. By matching the most suitable working mode according to different vehicle conditions, the economy of the whole vehicle can be obviously improved.
The working principle of the embodiment is as follows:
referring to fig. 2, the vehicle operating mode is a stationary start mode in which the engine brake 12 is open, the motor brake 16 is closed, the motor clutch 17 is open, and the planetary gear train is disconnected from the output shaft.
The direct current of the battery pack 7 is converted into three-phase alternating current through the inverter/transformer 8 to provide electric energy for the starting and power generating integrated machine 9, and the output power of the starting and power generating integrated machine 9 is transmitted to the engine through the single-speed-ratio gear 10, the sun gear 13 and the planet carrier 14 to drive the engine 11 to a starting rotating speed. The quiescent start mode is used for low SOC (state of charge) conditions.
Referring to fig. 3, the vehicle operating mode is a drive-in start mode in which the engine brake 12 is on, the motor brake 16 is on, and the motor clutch 17 is on.
The direct current of the battery pack 7 is converted into three-phase alternating current through an inverter/transformer 8 to provide electric energy for the starting and power generation integrated machine 9 and the motor 6. On one hand, the output power of the integrated starter-generator 9 is transmitted to the engine 11 through the single-speed-ratio gear 10, the sun gear 13 and the planet carrier 14; on the other hand, a part of the power of the electric motor 6 drives the wheels 1 via the first gear set 5 or the second gear set 18, the final drive 4, the differential 2, and the half shaft 3, and the other part of the power is transmitted to the engine 11 via the ring gear 15 and the carrier 14. The driving room starting mode is used for the situation that pure electric can not meet the power requirement of the driving room and needs the assistance of an engine.
Referring to fig. 4, the vehicle operating mode is an idle power generation mode in which the engine brake 12 is open, the motor brake 16 is closed, the motor clutch 17 is open, and the planetary gear train is disconnected from the output shaft.
Because the ring gear 15 of the planetary gear train is locked by the motor brake 16, the mechanical energy output by the engine 11 is converted into electric energy by the integrated starter-generator 9 through the planet carrier 14, the sun gear 13 and the single-speed ratio gear 10, and the inverter/transformer 8 further converts the three-phase alternating current generated by the integrated starter-generator 9 into direct current to be stored in the battery pack 7. The idle speed power generation mode can avoid repeated starting and stopping of the engine caused by traffic jam.
Referring to fig. 5, the vehicle operating mode is an energy recovery mode in which the engine brake 12 is open, the motor brake 16 is closed, the motor clutch 17 is open, and the planetary gear train is disconnected from the output shaft.
The recovered braking energy is transmitted to the motor 6 through the driving wheels 1, the half shaft 3, the differential 2, the main speed reducer 4, the first gear set 5 or the second gear set 18, at this time, the motor 6 works in a generator mode, and the inverter/transformer 8 further converts the three-phase alternating current recovered by the motor 6 into direct current to be stored in the battery pack 7. The brake recovery energy mode may improve overall vehicle economy.
Referring to fig. 6, the vehicle operating mode is a series drive mode in which the engine brake 12 is open, the motor brake 16 is closed, the motor clutch 17 is open, and the planetary gear train is disconnected from the output shaft.
The engine 11 always works at the optimal working point, the mechanical energy output by the engine is converted into electric energy by the integrated starting and power generating machine 9 through the planet carrier 14, the sun gear 13 and the single-speed ratio gear 10, and the inverter/transformer 8 further converts the three-phase alternating current generated by the integrated starting and power generating machine 9 into direct current to be stored in the battery pack 7. The direct current of the battery pack 7 is converted into three-phase alternating current through the inverter/transformer 8 to provide electric energy for the motor 6, and the energy of the motor 6 is transmitted to the wheels 1 through the first gear set 5 or the second gear set 18, the main speed reducer 4, the differential 2 and the half shaft 3.
Referring to fig. 7, the vehicle operating mode is a hybrid drive mode, with the engine brake 12 open, the motor brake 16 open, and the motor clutch 17 closed.
A part of energy output by the engine 11 is converted into electric power, and the electric power is stored in the battery pack 7 through the planet carrier 14, the sun gear 13, the single-speed ratio gear 10, the starting and power generation integrated machine 9 and the inverter/transformer 8; the other part is transmitted to the wheels 1 in the form of mechanical power through a planet carrier 14, an annular gear 15, a first gear set 5 or a second gear set 18, a main speed reducer 4, a differential 2 and a half shaft 3 to directly drive the automobile. The energy output by the battery pack 7 is transmitted to the wheels 1 through the inverter/transformer 8, the motor 6, the first gear set 5 or the second gear set 18, the final drive 4, the differential 2 and the half shaft 3, and drives the automobile together with the power output by the engine. The hybrid drive mode is used for a running condition where the required power is large.
Referring to FIG. 8, the vehicle operating mode is electric-only mode one, wherein engine brake 12 is closed, motor brake 16 is closed, and motor clutch 17 is open.
The direct current of the battery pack 7 is converted into three-phase alternating current through the inverter/transformer 8 to provide electric energy for the motor 6, and the energy of the motor 6 is transmitted to the wheels 1 through the first gear set 5 or the second gear set 18, the main speed reducer 4, the differential 2 and the half shaft 3. And the pure electric mode I is used for low-speed working conditions, and can obviously save energy and reduce emission.
Referring to fig. 9, the vehicle operating mode is electric-only mode two, in which the engine brake 12 is closed, the motor brake 16 is open, and the motor clutch 17 is closed.
The direct current of the battery pack 7 is converted into three-phase alternating current through an inverter/transformer 8, one part of the three-phase alternating current provides electric energy for the motor 6, and the energy of the motor 6 is transmitted to the wheels 1 through the first gear set 5 or the second gear set 18, the main speed reducer 4, the differential 2 and the half shaft 3; the other part supplies electric energy to the integrated starter-generator 9, and when the integrated starter-generator 9 works in a motor mode, the energy is transmitted to the wheels 1 through the single-speed-ratio gear 10, the sun gear 13, the inner gear ring 15, the first gear set 5 or the second gear set 18, the main speed reducer 4, the differential 2 and the half shafts 3. The pure electric mode two is used for the low-speed operating mode that is higher than pure electric mode one, and through the torque coupling of bi-motor, can further enlarge the power interval that pure electric went, improve economic nature.
Embodiment 2, referring to fig. 10 and 11, the intermediate gear 22 and the two-speed final drive can completely replace the first gear set 5 or the second gear set 18 and the single-speed final drive 4 in embodiment 1, and have the same working effect.
Referring to fig. 10, when the shift fork 23 engages the short ring gear 20, the sun gear of the two-speed final drive is locked, and the planetary gear train of the two-speed final drive is in a low gear.
Referring to fig. 11, when the long ring gear 21 is engaged by the shift fork 23, the sun gear of the two-speed final drive is connected to the carrier, and at this time, the sun gear, the carrier, and the ring gear of the two-speed final drive have the same speed, and the transmission ratio is 1, which is a high gear.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present specification and the accompanying drawings, or directly or indirectly applied to other related system fields, are included in the scope of the present invention.

Claims (6)

1. The utility model provides a two grades of transmission systems of input shunting for hybrid electric vehicle which characterized in that:
the starter comprises an engine (11), an electric motor (6), a starting and power generating integrated machine (9), a clutch, a brake, a planetary gear train, a speed reducing mechanism and a differential (2);
the clutch comprises a motor clutch (17);
the brake includes an engine brake (12) and a motor brake (16);
the planetary gear train comprises a sun gear (13), a planet gear, a planet carrier (14) and an inner gear ring (15);
the engine (11) is connected with the planet carrier (14) through an engine brake (12), the motor (6) is connected with the inner gear ring (15) through a motor clutch (17) and a motor brake (16), and the starting and power generating integrated machine (9) is connected with the sun gear (13) through a single-speed ratio gear;
the output torque of the inner gear ring (15) is coupled with the torque of the motor (6), passes through the speed reducing mechanism and the differential (2) and then is transmitted to the wheels (1).
2. The input-split two-speed transmission system for a hybrid electric vehicle according to claim 1, wherein:
the speed reducing mechanism comprises a first gear set (5), a second gear set (18), a combination sleeve and a main speed reducer (4); the combination sleeve can enable the first gear set (5) or the second gear set (18) to be combined with the main speed reducer (4) to achieve two-gear speed ratio, and the main speed reducer (4) is connected with the differential (2).
3. The input-split two-speed transmission system for a hybrid electric vehicle according to claim 1, wherein:
the reduction mechanism includes an intermediate gear (22) and a two-speed final drive.
4. The input-split two-speed transmission system for a hybrid vehicle according to any one of claims 1 to 3, wherein:
further comprising a battery pack (7) and an inverter/transformer (8); the starting and power generating integrated machine (9) and the motor (6) are respectively connected with the battery pack (7) through an inverter/transformer (8).
5. The input-split two-speed transmission system for a hybrid electric vehicle according to claim 4, wherein:
the power output shaft of the engine (11) is coaxial with the power output shaft of the motor (6), and the power output shaft of the starting and power generation integrated machine (9) is parallel to the power output shaft of the motor (6).
6. An automobile, characterized in that:
an input split two speed transmission system for a hybrid vehicle comprising the system as claimed in claims 1 to 5.
CN202010731760.5A 2020-07-27 2020-07-27 Input split-flow type two-gear transmission system for hybrid electric vehicle and vehicle Active CN112046267B (en)

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