CN111251872B - Power driving system and vehicle - Google Patents

Power driving system and vehicle Download PDF

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Publication number
CN111251872B
CN111251872B CN201811459846.6A CN201811459846A CN111251872B CN 111251872 B CN111251872 B CN 111251872B CN 201811459846 A CN201811459846 A CN 201811459846A CN 111251872 B CN111251872 B CN 111251872B
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China
Prior art keywords
gear
reverse
shaft
driven
transmission
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CN111251872A (en
Inventor
凌和平
翟震
熊雨超
梅绍坤
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BYD Co Ltd
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BYD 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
    • B60K6/24—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—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
    • 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)
  • Structure Of Transmissions (AREA)

Abstract

The invention discloses a power driving system and a vehicle, wherein the power driving system comprises: an engine, a motor generator, a transmission, the transmission comprising: a clutch; an input shaft; the output shaft is provided with a reverse gear driven gear, a gear driven gear correspondingly meshed with the gear driving gear and an output gear, and the output gear is meshed with the driven gear of the main speed reducer; the motor generator is in power coupling connection with the driven gear of the main speed reducer through the reverse gear shaft, the reverse gear drive gear is slidably mounted on the reverse gear shaft between a first position and a second position along the axial direction of the reverse gear shaft, the reverse gear drive gear is meshed with the reverse gear drive gear and the reverse gear driven gear when in the first position, and at least one of the reverse gear drive gear and the reverse gear driven gear is disconnected with the reverse gear drive gear when in the second position. The reverse gear transmission path of the power driving system is short, the transmission efficiency of the motor generator is high, and the hybrid gear shifting is free of power interruption.

Description

Power driving system and vehicle
Technical Field
The invention relates to the technical field of vehicle manufacturing, in particular to a power driving system and a vehicle with the same.
Background
With the continuous consumption of energy, the development and utilization of new energy vehicles have gradually become a trend. The hybrid electric vehicle is one of new energy vehicle types, and can realize multiple working conditions through the driving of an engine and/or a motor so as to improve the fuel efficiency and the fuel economy of transmission. In the related art, the transmission chain for outputting the driving force of the motor to the differential is long, the transmission efficiency is low, the problem of power interruption is easy to occur in the gear shifting process, and an improved space exists.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
A power drive system according to an embodiment of the present invention includes: an engine, a motor generator, a transmission, the transmission comprising: a clutch; the input shaft is selectively in power coupling connection with the engine through the clutch, and is provided with a reverse gear driving gear and a gear driving gear; the output shaft is provided with a reverse gear driven gear, a gear driven gear correspondingly meshed with the gear driving gear and an output gear, and the output gear is meshed with a main speed reducer driven gear; the motor generator is in power coupling connection with the driven gear of the main speed reducer through the reverse gear shaft, the reverse gear drive gear can be installed on the reverse gear shaft in a sliding mode between a first position and a second position along the axial direction of the reverse gear shaft, the reverse gear drive gear is meshed with the reverse gear drive gear and the reverse gear driven gear when the first position is adopted, and at least one of the reverse gear drive gear and the reverse gear driven gear is disconnected with the reverse gear drive gear when the second position is adopted.
According to the power driving system provided by the embodiment of the invention, switching of various working conditions can be realized, the reverse gear and pure electric transmission paths are short, the motor generator has high transmission efficiency, the problems of power interruption and low efficiency caused by overlong transmission chains under the pure electric working conditions due to gear shifting can be avoided, the space arrangement of the whole vehicle is greatly improved, parts are saved, and the cost is reduced.
The invention also provides a vehicle which is provided with the power driving system.
The vehicle and the power driving system have the same advantages compared with the prior art, and the detailed description is omitted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIGS. 1-4 are schematic structural views of a power drive system according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a first shift actuator simultaneously driving a reverse drive gear and a single synchronizer in accordance with an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a vehicle according to an embodiment of the invention.
Reference numerals:
in the case of the vehicle 1000, the vehicle,
the power-driven system 100 is provided with a power system,
an input shaft I, an output shaft II, a reverse gear shaft III,
the clutch (C) is used for driving the clutch (C),
a first-gear drive gear 1a, a second-gear drive gear 2a, a fourth-gear drive gear 4a, a third-gear drive gear 3a, a fourth-gear drive gear 4a, a fifth-gear drive gear 5a, a reverse-gear drive gear Ra,
a first-gear driven gear 1b, a second-gear driven gear 2b, a fourth-gear driven gear 4b, a third-gear driven gear 3b, a fourth-gear driven gear 4b, a fifth-gear driven gear 5b, a reverse-gear driven gear Rb,
the reverse-gear transmission gear Rab is arranged,
an output shaft double synchronizer S1, an input shaft double synchronizer S2, an input shaft single synchronizer S3, an output synchronizer S4, a reverse shaft synchronizer S7,
an output gear Za, a main reducer driven gear Zb, a differential Z,
a motor generator 10, a motor side gear 1c, a reverse gear shaft side gear 1f, a reverse gear shaft side first gear 1g, a fork assembly 20,
an engine 30.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Referring to fig. 1 to 4, a power driving system 100 according to an embodiment of the present invention is described, in which a motor generator 10 of the power driving system 100 is coupled to a final drive driven gear Zb through a reverse shaft iii, and a driving force generated by the motor generator 10 is output to a wheel through the final drive driven gear Zb, or the driving force is transmitted to the motor generator 10 through the final drive driven gear Zb to generate power, so that a transmission chain length is shortened, and transmission efficiency is improved.
As shown in fig. 1 to 5, a power drive system 100 according to an embodiment of the present invention includes: engine 30, motor generator 10, and transmission.
The engine 30 is used for outputting driving force to drive wheels to rotate, and the engine 30 may be a gasoline engine or a diesel engine. The crankshaft of the engine 30 may be connected to the input end of the transmission, the output end of the transmission may be connected to the wheels through the differential Z, the driving force output from the engine 30 may be transmitted to the wheels through the transmission to drive the wheels to rotate, and the power output from the engine 30 may also be transmitted to the motor generator 10 through the transmission to drive the motor generator 10 to generate power.
The transmission has a plurality of gears, and the engine 30 can output a plurality of different rotating speeds and torques through the transmission, so that the running vehicle 1000 can be well adapted to the running environment. When the vehicle 1000 runs on a road with large resistance, the transmission can select a gear with low rotating speed and high torque for power transmission, so that sufficient power output is kept; and when the vehicle 1000 runs on a smooth and open road, the transmission can select a gear with high rotating speed and low torque for power transmission, so that the oil consumption is reduced. Therefore, the vehicle 1000 can be guaranteed to have good power performance under different working conditions, the vehicle 1000 can keep a good running state, and meanwhile fuel economy of the vehicle 1000 is improved.
The motor generator 10 is connected to the transmission, and the motor generator 10 functions as both a generator and a motor.
When the motor generator 10 is used as a generator (the vehicle 1000 is in at least one of the parking power generation mode and the driving power generation mode), at least a part of the power output from the engine 30 may be transmitted to the motor generator 10 via the final drive driven gear Zb, power generation may be performed by the motor generator 10, and the amount of power generated by the motor generator 10 may be stored in the power battery of the vehicle 1000.
When the motor generator 10 is used as a motor (the vehicle 1000 is in a hybrid mode or a pure electric mode), the power battery supplies power to the motor generator 10, the motor generator 10 operates to output power, and the power output by the motor generator 10 is transmitted to wheels through the transmission, so that electric driving of the vehicle 1000 can be realized.
The output end of the transmission is used for connecting a differential Z, wherein the input end of the differential Z is connected with a driven gear Zb of a main speed reducer, and two output ends of the differential Z are respectively connected with a transmission half shaft, so that the driving force output by the engine 30 sequentially passes through the clutch C, the transmission and the differential Z and is transmitted to wheels through the transmission half shafts by the differential Z, the transmission half shafts comprise a left transmission half shaft connected with a left wheel and a right transmission half shaft connected with a right wheel, and when the vehicle 1000 turns, the differential Z can adjust the rotating speed of the left wheel and the right wheel so as to enable the left wheel and the right wheel to turn at proper rotating speed. From this, can drive the wheel and rotate, realize the drive effect to vehicle 1000, transmission simple structure, the transmission process easily realizes, can improve the ride comfort that vehicle 1000 shifted gears and travel.
As shown in fig. 1 to 5, the transmission includes: clutch C, input shaft I, output shaft II, reverse gear shaft III.
The input shaft I is selectively coupled with the engine 30 through a clutch C, so that the driving force output by the engine 30 can be selectively transmitted to the input shaft I, two ends of the clutch C are respectively connected with a crankshaft of the engine 30 and the input shaft I, the engine 30 is coupled with the input shaft I when the clutch C is connected, the engine 30 is disconnected with the input shaft I when the clutch C is disconnected, and a flywheel, a dual-mass flywheel, a damper and other components can be arranged between the clutch C and the crankshaft of the engine 30.
The input shaft I is provided with a reverse gear driving gear Ra and a plurality of different gear driving gears, the output shaft II is provided with a reverse gear driven gear Rb, a plurality of gear driven gears which are correspondingly meshed with the gear driving gears and an output gear Za, and the output gear Za is meshed with a main speed reducer driven gear Zb. The gear is arranged on the shaft and comprises a plurality of different conditions, the first condition is that the gear is in power coupling connection with the shaft, the second condition is that the gear is in idle sleeve on the shaft, and when the gear is in idle sleeve on the shaft, the gear can be selectively in power coupling connection with the shaft through arranging a synchronizer.
In some embodiments, as shown in fig. 1 to 4, the input shaft i may be provided with a first gear driving gear 1a, a second gear driving gear 2a, a third gear driving gear 3a, a fourth gear driving gear 4a, a fifth gear driving gear 5a, and a reverse gear driving gear Ra, and the mounting position of the reverse gear driving gear Ra on the input shaft i may be located between the mounting positions of the first gear driving gear 1a and the second gear driving gear 2a on the input shaft i. Correspondingly, the output shaft ii may be provided with a first-gear driven gear 1b, a second-gear driven gear 2b, a third-gear driven gear 3b, a fourth-gear driven gear 4b, a fifth-gear driven gear 5b and a reverse-gear driven gear Rb, and the installation position of the reverse-gear driven gear Rb on the output shaft ii may be located between the installation positions of the first-gear driven gear 1b and the second-gear driven gear 2b on the output shaft ii. The first-gear driven gear 1b is meshed with the first-gear driving gear 1a, the second-gear driven gear 2b is meshed with the second-gear driving gear 2a, the third-gear driven gear 3b is meshed with the third-gear driving gear 3a, the fourth-gear driven gear 4b is meshed with the fourth-gear driving gear 4a, and the fifth-gear driven gear 5b is meshed with the fifth-gear driving gear 5 a. Of course, the transmission is a 5-gear transmission, and more gear driving gears and gear driving gears can be arranged as required to realize more gears, which is not described herein again.
The reverse gear shaft III is provided with a reverse gear transmission gear Rab, and the reverse gear transmission gear Rab is slidably arranged on the reverse gear shaft III between a first position and a second position along the axial direction of the reverse gear shaft III. When in the first position, the reverse drive gear Rab is engaged with the reverse drive gear Ra and the reverse driven gear Rb, the reverse drive gear Ra is engaged with the reverse drive gear Rab, the reverse drive gear Rab is engaged with the reverse driven gear Rb, and the reverse drive gear Rab is used for coupling the power of the reverse drive gear Ra to the reverse driven gear Rb. In the second position, at least one of the reverse drive gear Ra and the reverse driven gear Rb is disconnected from the reverse transmission gear Rab. The reverse drive gear Rab is slidably mounted on the reverse shaft iii in the axial direction of the reverse shaft iii such that the reverse drive gear Rab is engaged with the reverse drive gear Ra and the reverse driven gear Rb or the reverse drive gear Rab is disengaged from at least one of the reverse drive gear Ra and the reverse driven gear Rb.
It can be understood that, the above installation form of the reverse gear transmission gear Rab can realize the selective power transmission from the reverse gear driving gear Ra to the reverse gear driven gear Rb, when the reverse gear driving gear Ra is required to be in power coupling connection with the reverse gear driven gear Rb (such as a pure fuel reverse gear working condition), the reverse gear transmission gear Rab moves to the first position, at this time, the reverse gear driving gear Ra is meshed with the reverse gear transmission gear Rab, the reverse gear transmission gear Rab is meshed with the reverse gear driven gear Rb, and the reverse gear transmission gear Rab is used for coupling the power of the reverse gear driving gear Ra to the reverse gear driven gear Rb. When the reverse driving gear Ra and the reverse driven gear Rb are not required to be coupled in a power coupling manner (for example, a forward driving condition), the reverse transmission gear Rab moves to the second position, at least one of the reverse driving gear Ra and the reverse driven gear Rb is disconnected from the reverse transmission gear Rab, and the power from the reverse driving gear Ra to the reverse driven gear Rb is interrupted.
The disconnection of at least one of the reverse drive gear Ra and the reverse driven gear Rb from the reverse transmission gear Rab includes various cases:
1) the reverse driving gear Ra and the reverse driven gear Rb are disconnected from the reverse transmission gear Rab, in some embodiments, the reverse driving gear Ra and the reverse driven gear Rb may be disposed opposite to each other, axial widths of the reverse driving gear Ra, the reverse driven gear Rb and the reverse transmission gear Rab are substantially the same, and when the reverse transmission gear Rab moves to the second position, the reverse transmission gear Rab is not engaged with the reverse driving gear Ra and the reverse driven gear Rb. The reverse drive gear Ra and the reverse driven gear Rb are disconnected from the reverse transmission gear Rab without any frictional loss due to meshing.
2) The reverse driving gear Ra is disconnected from the reverse transmission gear Rab, the reverse driven gear Rb is meshed with the reverse transmission gear Rab, in some embodiments, the axial width of the reverse driven gear Rb is larger than that of the reverse driving gear Ra, the axial widths of the reverse driving gear Ra and the reverse transmission gear Rab are basically the same, when the reverse transmission gear Rab moves to the second position, the reverse transmission gear Rab is staggered with the reverse driving gear Ra, and the reverse transmission gear Rab is meshed with the reverse driven gear Rb.
3) The reverse driven gear Rb is disconnected from the reverse transmission gear Rab, the reverse driving gear Ra is meshed with the reverse transmission gear Rab, in some embodiments, the axial width of the reverse driving gear Ra is greater than that of the reverse driven gear Rb, the axial widths of the reverse driven gear Rb and the reverse transmission gear Rab are basically the same, when the reverse transmission gear Rab moves to the second position, the reverse transmission gear Rab is staggered with the reverse driven gear Rb, and the reverse transmission gear Rab is meshed with the reverse driving gear Ra.
The reverse gear related gear arrangement mode of the structure form can greatly shorten a reverse gear transmission path, for example, the transmission path of pure fuel reverse gear is as follows: engine 30, clutch C, input shaft I, reverse driving gear Ra, reverse drive gear Rab, reverse driven gear Rb, output shaft II, with the reverse shaft III set up the form of a plurality of reverse gears among the correlation technique compare, not only the gear number has been reduced, has shortened transmission path and axial space moreover.
As shown in fig. 1 to 4, the motor generator 10 is coupled to the main reducer driven gear Zb through the reverse shaft iii, so that the space at the reverse shaft iii can be fully utilized, and the motor generator 10 can be connected to the main reducer driven gear Zb through a short transmission chain. And motor generator 10 links to each other with main reducer driven gear Zb, can avoid the problem of power interruption when leading to the electricelectric dynamic behavior owing to shifting gears, and the driving chain of electric drive mode is short, and transmission efficiency is higher, is particularly useful for inserting electric formula hybrid vehicle 1000.
It is understood that since the motor generator 10 is connected to the final drive driven gear Zb, the clutch C cuts off the power transmission of the engine 30 during the shifting of the power drive system 100, and the motor generator 10 operates to transmit the power to the wheels, so that there is no interruption of the power during the shifting.
The speed regulation of the motor can be realized in the gear shifting process of the power driving system 100, so that the impact feeling of the synchronizer when the synchronizer is disconnected from one gear and connected with a target gear is relieved, and the gear shifting comfort is improved. Taking the shift from first gear to second gear as an example, the clutch C disconnects the power of the engine 30, the output shaft double synchronizer S1 is then disconnected from the first-gear driven gear 1b and gradually engaged with the second-gear driven gear 2b, and the factor affecting the engagement impact of the output shaft double synchronizer S1 is the difference in the rotation speeds of the second-gear driven gear 2b and the output shaft ii, and the smaller the difference in rotation speeds, the smaller the shift impact. The rotating speed of the reverse gear shaft III can be controlled by adjusting the rotating speed of the motor generator 10, the rotating speed of the driven gear Zb of the main speed reducer is changed, the rotating speed of the output shaft II is controlled to be approximately the same as the rotating speed of the secondary driven gear 2b, and gear shifting impact is relieved. After the output shaft double synchronizer S1 is engaged with the second-gear driven gear 2b, the clutch C is engaged to complete gear shifting, and the gear shifting process is smoother.
The motor generator 10 of the power driving system 100 is connected with the driven gear Zb of the main reducer, the power transmission chain from the motor generator 10 to the wheels is short, the motor generator 10 has high transmission efficiency, the problems of long power transmission line and low transmission efficiency of a motor of a common hybrid power driving system 100 are solved, and the power saving capability of the power driving system 100 is improved.
This power drive system 100 has the pure fuel mode of reversing, and in the pure fuel mode of reversing, engine 30 is worked, and motor generator 10 does not work, and reverse drive gear Rab moves to the first position, and clutch C engages, and the transmission path of power is short in the pure fuel mode of reversing, specifically: the engine 30-clutch C-input shaft I-reverse gear driving gear Ra-reverse gear transmission gear Rab-reverse gear driven gear Rb-output shaft II.
The power drive system has a pure electric reverse mode in which the engine 30 does not operate, the motor generator 10 operates and reverses, and the clutch C is disconnected. The transmission path of the power in the pure electric reverse gear mode is short, and specifically comprises the following steps: motor generator 10-reverse gear shaft iii-main reducer driven gear Zb.
As shown in fig. 1 and 3, the reverse gear transmission gear Rab is freely sleeved on the reverse gear shaft iii, so that the reverse gear transmission gear Rab and the reverse gear shaft iii can rotate relatively, and since the reverse gear shaft iii is used as a ring of a transmission path for the motor generator 10 to transmit to the main reducer driven gear Zb, the reverse gear transmission gear Rab and the reverse gear shaft iii are arranged, so that the power at the reverse gear transmission gear Rab can be prevented from interfering with the power of the motor generator 10, and the control strategy can be simplified. In some embodiments, a bearing is sleeved outside the reverse gear shaft iii, the bearing is in clearance fit with the reverse gear shaft iii, and the reverse gear transmission gear Rab is sleeved outside the bearing. Of course, the reverse transmission gear Rab may also be mounted on the reverse shaft iii in other slidable assembling manners, which are not described herein again.
Since the reverse drive gear Rab is freely sleeved on the reverse shaft iii, the power drive system 100 of the structure has a hybrid reverse mode in which the engine 30 is operated, the motor generator 10 is operated, the reverse drive gear Rab is moved to the first position, the clutch C is engaged, a transmission path of power is short in the hybrid reverse mode, the power of the engine 30 is coupled with the power of the motor generator 10 on the main reducer driven gear Zb, and the transmission path of the engine 30 is specifically: the transmission path of the motor generator 10 is specifically as follows, namely, the engine 30, the clutch C, the input shaft I, the reverse driving gear Ra, the reverse transmission gear Rab, the reverse driven gear Rb, the output shaft II, the output gear Za and the main reducer driven gear Zb: the motor generator 10, the reverse gear shaft III, the reverse gear shaft side gear 1f, the main reducer driven gear Zb and the motor generator 10 have high transmission efficiency.
The power drive system 100 described above has a number of modes of operation:
1) pure fuel reverse gear and five forward gear working conditions
When the engine 30 is operated, the motor generator 10 is stopped, and the vehicle 1000 needs to run in reverse gear, the clutch C is disengaged, each forward gear is interrupted, the reverse drive gear Rab moves to the first position, the reverse drive gear Rab is simultaneously engaged with the reverse drive gear Ra and the reverse driven gear Rb, and then the clutch C engages with the vehicle 1000 to run in reverse gear. When the vehicle 1000 shifts forward, the clutch C is disengaged, the corresponding synchronizer is disengaged from the current gear, then engaged with the target gear, and then engaged to achieve pure fuel five forward gear driving.
2) Pure electric forward gear and reverse gear
The engine 30 stops operating, the clutch C is disconnected, the motor generator 10 operates, forward rotation and reverse rotation of the motor generator 10 realize forward or reverse travel of the vehicle 1000, and the power of the motor generator 10 in the electric-only mode is transmitted to the main reducer driven gear Zb and then to the wheels.
3) Hybrid reverse and 5 forward gear conditions
In the hybrid mode, the power of the engine 30 and the power of the motor generator 10 are coupled to the main reducer driven gear Zb, the engine 30 is operated, the motor generator 10 is operated, when the vehicle 1000 needs to run in reverse gear, the clutch C is disconnected, the reverse transmission gear Rab moves to the first position, the reverse transmission gear Rab is simultaneously engaged with the reverse driving gear Ra and the reverse driven gear Rb, then the clutch C is engaged, the power of the engine 30 is transmitted to the wheels, meanwhile, the power of the motor generator 10 is transmitted to the main reducer driven gear Zb through the reverse shaft iii and then transmitted to the wheels, and the vehicle 1000 realizes reverse running. When the vehicle 1000 shifts forward, the clutch C is disengaged, the corresponding synchronizer is disengaged from the current gear, then engaged with the target gear, then engaged to transmit the power of the engine 30 to the wheels, and simultaneously the power of the motor generator 10 is transmitted to the main reducer driven gear Zb and then transmitted to the wheels, thereby realizing the five forward gears hybrid driving.
4) Deceleration/braking energy recovery:
during deceleration or braking, energy is transmitted to the motor generator 10 from the wheels through the reverse gear shaft III, and kinetic energy recovery is achieved.
5) Driving charging function
When the engine 30 is operated, a part of the power of the engine 30 is transmitted to the wheels through the transmission device, and the other part of the power is transmitted to the motor generator 10 for charging, thereby realizing the charging function in driving.
According to the power driving system 100 of the embodiment of the invention, switching of various working conditions can be realized, reverse gear and pure electric transmission paths are short, the motor generator 10 has high transmission efficiency, the problems of power interruption and low efficiency of overlong transmission chains under the pure electric working conditions caused by gear shifting can be avoided, the space arrangement of the whole vehicle is greatly improved, parts are saved, and the cost is reduced.
Each gear driving gear and each gear driven gear of the transmission may be mounted to the corresponding shaft in various forms.
The gear driving gears comprise at least one of a first gear driving gear and a second gear driving gear, the first gear driving gear is fixedly connected with the input shaft I, the second gear driving gear is sleeved on the input shaft I in an empty mode, and the second gear driving gear can be selectively in power coupling connection with the input shaft I; the gear driven gear comprises at least one of a first gear driven gear and a second gear driven gear, the first gear driven gear is correspondingly meshed with the first gear driving gear, the second gear driven gear is correspondingly meshed with the second gear driving gear, the first gear driven gear is freely sleeved on the output shaft II, the first gear driven gear can be selectively in power coupling connection with the output shaft II, and the second gear driven gear is fixedly connected with the output shaft II.
The synchronizer is arranged on the input shaft I, so that the second-class gear driving gear can be selectively in power coupling connection with the input shaft I, and the synchronizer is arranged on the output shaft II, so that the first-class gear driven gear can be selectively in power coupling connection with the output shaft II.
It will be appreciated that the transmission may include both the first and second gear drive gears, or the transmission may include only the first gear drive gear, the first gear driven gear, or the transmission may include only the second gear drive gear, the second gear driven gear. The change of the various forms can be realized by adjusting the positions of the synchronizers, and the transmission synchronizers with the structural forms are fewer in number and convenient to arrange parts.
The following describes a transmission in one form of construction.
As shown in fig. 1-4, the first gear driving gear comprises: one keeps off driving gear 1a and keeps off driving gear 2a, keeps off driving gear 1a and keeps off driving gear 2a and all with I fixed connection of input shaft, and the second class keeps off the position driving gear and includes: three keep off driving gear 3a, four keep off driving gear 4a, five keep off driving gear 5a, three keep off driving gear 3a, four keep off driving gear 4a, five keep off the equal free cover of driving gear 5a in input shaft I, three keep off driving gear 3a and four keep off driving gear 4a pass through input shaft bisynchronous ware S2 alternative and I power coupling of input shaft and be connected, five keep off driving gear 5a pass through input shaft monosynchronous ware S3 alternative and I power coupling of input shaft and be connected, first type keeps off the position driven gear and includes: one keeps off driven gear 1b, two keep off driven gear 2b, keeps off driven gear 1b, two keep off driven gear 2b homoenergetic empty sleeve in output shaft II, keeps off driven gear 1b and two keep off driven gear 2b and pass through output shaft bisynchronizer S1 selectively with II power coupling of output shaft be connected, second class keep off the driven gear and include: the three-gear driven gear 3b, the four-gear driven gear 4b and the five-gear driven gear 5b are all fixedly connected with the output shaft II.
It should be noted that the double synchronizer may be disposed between two corresponding gears, for example, the input shaft double synchronizer S2 is disposed between the input shaft i and the three-gear driving gear 3a and the four-gear driving gear 4a, when the engaging sleeve of the input shaft double synchronizer S2 is engaged leftward (leftward in fig. 1-4), the three-gear driving gear 3a is in power coupling connection with the input shaft i, when the engaging sleeve of the input shaft double synchronizer S2 is engaged rightward (rightward in fig. 1-4), the four-gear driving gear 4a is in power coupling connection with the input shaft i, and when the engaging sleeve of the input shaft double synchronizer S2 is located at the middle position, neither the three-gear driving gear 3a nor the four-gear driving gear 4a is in power coupling connection with the input shaft i. The number of synchronizers can be reduced by providing the double synchronizer, and the arrangement position of the double synchronizer can be adjusted according to needs, for example, the input shaft double synchronizer S2 can also be arranged between the four-gear driving gear 4a and the five-gear driving gear 5a, and the structure forms of other arrangements are not described in detail here.
Through the power transmission path that different fender position driving gears and fender position driven gear mesh mutually and form, can realize the output of different rotational speeds, torque, can select power transmission path to mesh according to specifically operating mode and driving environment to realize the output of different rotational speeds, torque, and then adapt to different driving states and satisfy multiple power demand, guarantee that vehicle 1000 has better dynamic nature and fuel economy when driving.
With the transmission of the above configuration, the driving force of the engine 30 can be transmitted to the output shaft ii through the following six transmission paths.
When the first gear is shifted: the clutch C is engaged, the driving force output from the engine 30 is transmitted to the input shaft i through the clutch C, and the engaging sleeve of the output shaft dual synchronizer S1 moves leftward (leftward in fig. 1 to 4), so that the first-gear driven gear 1b is selectively connected in power coupling with the output shaft ii. Thus, the power transmission path of the first gear is: the engine 30, the clutch C, the input shaft I, the first gear driving gear 1a, the first gear driven gear 1b and the output shaft II.
The power transmission path of the engine 30 in the second gear is: the engine 30, the clutch C, the input shaft I, the second-gear driving gear 2a, the second-gear driven gear 2b and the output shaft II.
The power transmission path of the engine 30 in the third gear is: the engine 30, the clutch C, the input shaft I, the three-gear driving gear 3a, the three-gear driven gear 3b and the output shaft II.
The power transmission path of the engine 30 in the fourth gear is: the engine 30, the clutch C, the input shaft I, the four-gear driving gear 4a, the four-gear driven gear 4b and the output shaft II.
The power transmission path of the engine 30 in the fifth gear is: the engine 30, the clutch C, the input shaft I, the five-gear driving gear 5a, the five-gear driven gear 5b and the output shaft II.
The power transmission path of the engine 30 in the reverse gear is: the engine 30-clutch C-input shaft I-reverse gear driving gear Ra-reverse gear transmission gear Rab-reverse gear driven gear Rb-output shaft II.
The power of the engine 30 is transmitted to the output shaft ii to drive the vehicle 1000 to move or drive the motor generator 10 to generate electricity.
The pure fuel condition, the engine 30 is operated, the motor generator 10 is not operated, and the power transmission of the engine 30 refers to the gear transmission path, which is not described in detail herein.
In the hybrid operation mode, the engine 30 is operated, the motor generator 10 is operated, and the power of the engine 30 is transmitted to the output shaft ii by referring to the above-mentioned gear transmission path and coupled to the power of the motor generator 10 at the final drive driven gear Zb.
In the pure electric mode, the engine 30 does not operate, the motor generator 10 operates, and the power of the motor generator 10 is output through the main reducer driven gear Zb.
That is to say, the motor generator 10 can realize power intervention at the driven gear Zb of the main reducer, and in the hybrid working condition, the engine 30 and the motor generator 10 are in parallel connection, and through direct torque coupling, the advantages of strong power performance, simple structure and easy realization of the spatial arrangement of the whole vehicle in the parallel connection structure can be better highlighted.
It can be understood that the parallel hybrid power system structure can better highlight the advantages of strong dynamic property, simple structure and easy realization of the whole vehicle space arrangement of the parallel structure through direct torque coupling.
Through setting up motor generator 10 in main reducer driven gear Zb department, it is direct to be connected with main reducer driven gear Zb through the reduction chain, under the electricelectric dynamic condition, the motor has very high transmission efficiency, need realize the problem of electricelectric dynamic condition through complicated the shifting in the derailleur and driving chain among the general hybrid system, also avoided simultaneously because the power interruption problem and the inefficiency problem of driving chain overlength when shifting when leading to electricelectric dynamic condition, be particularly useful for in inserting electric formula hybrid vehicle 1000. Meanwhile, the motor generator 10 is arranged at the driven gear Zb of the main reducer, so that the axial distance of the assembly is greatly shortened, and the spatial arrangement of the whole vehicle is easy.
In terms of control logic, the power driving system 100 according to the embodiment of the present invention does not change the basic architecture and the shift logic of the transmission, and the intervention of the motor generator 10 is only represented by the superposition of torques at the output end, so that the control logic of the conventional engine 30 and the transmission is independent from the control logic of the motor generator 10, which is beneficial to saving the development time and cost of manufacturers, avoiding higher failure rate of the system, and even if the system failure of the engine 30 and the transmission does not affect the power output of the motor generator 10 during pure electric operation.
The motor generator 10 can be used as a generator, for example, the power driving system 100 has a deceleration/braking energy recovery condition, and during deceleration or braking, energy is transferred from the wheels to the motor generator 10 through the main speed reducer driven gear Zb, so as to realize kinetic energy recovery.
In some embodiments, power-drive system 100 further comprises: and the first gear shifting executing mechanism is used for controlling the reverse gear transmission gear Rab and the single synchronizer on the input shaft I so as to enable the reverse gear transmission gear Rab and the single synchronizer to be linked, as shown in fig. 5, the reverse gear transmission gear Rab and the input shaft single synchronizer S3 can be operated through the same shifting fork assembly 20, and the shifting fork of the reverse gear transmission gear Rab and the shifting fork of the input shaft single synchronizer S3 are connected on the same shifting fork shaft, so that parts can be saved, and the cost can be saved.
At the initial position, at least one of the reverse driving gear Ra and the reverse driven gear Rb is disconnected from the reverse transmission gear Rab, and a gear driving gear (a fifth driving gear 5a) corresponding to the single synchronizer is disconnected from the input shaft i; when the reverse transmission gear Rab moves to the first position (moves to the right in the embodiment shown in fig. 1 to 4), the gear driving gear (the fifth-gear driving gear 5a) corresponding to the single synchronizer is disconnected from the input shaft i; when the reverse transmission gear Rab moves to the second position (moves to the left in the embodiment shown in fig. 1 to 4), the gear driving gear (the fifth-gear driving gear 5a) corresponding to the single synchronizer is in power coupling connection with the input shaft i through the single synchronizer. This eliminates a shift actuator and reduces the number of parts of power-driven system 100.
Of course, a single synchronizer may be provided on the output shaft ii, and correspondingly, the power driving system 100 further includes: and the first gear shifting actuating mechanism is used for controlling the reverse gear transmission gear Rab and the single synchronizer on the output shaft II so as to enable the reverse gear transmission gear Rab and the single synchronizer to be linked.
At the initial position, at least one of the reverse driving gear Ra and the reverse driven gear Rb is disconnected with the reverse transmission gear Rab, and the gear driven gear corresponding to the single synchronizer is disconnected with the output shaft II; when the reverse gear transmission gear Rab moves to the first position, the gear driven gear corresponding to the single synchronizer is disconnected with the output shaft II; and when the reverse gear transmission gear Rab moves to the second position, the gear driven gear corresponding to the single synchronizer is in power coupling connection with the output shaft II through the single synchronizer. This eliminates a shift actuator and reduces the number of parts of power-driven system 100.
As shown in fig. 1 to 4, the gear driven gears include at least a first gear driven gear selectively coupled to the output shaft ii through a synchronizer, and the reverse driven gear Rb is disposed on an engagement sleeve of the synchronizer, that is, teeth of the reverse driven gear Rb are disposed on an outer periphery of the engagement sleeve, so that the reverse driven gear Rb is formed integrally with the synchronizer. First keep off driven gear 1b and two keep off driven gear 2b homoenergetic cover in output shaft II, first keep off driven gear 1b and two keep off driven gear 2b through output shaft bisynchronizer S1 selectively with II power coupling of output shaft be connected, reverse gear driven gear Rb sets up in the engaging sleeve of output shaft bisynchronizer S1, can make inner structure arrange compactlyer like this, the internal linkage is more high-efficient reasonable, shortens the axial space of this system.
Some structural forms of the power drive system 100 according to the embodiment of the invention are described below with reference to the drawings.
Example one
As shown in fig. 1, the power drive system 100 includes: engine 30, motor generator 10, transmission, the transmission includes: clutch C, input shaft I, output shaft II, reverse gear shaft III.
The input shaft I is selectively in power coupling connection with the engine 30 through a clutch C, the input shaft I is fixedly provided with a first-gear driving gear 1a, a second-gear driving gear 2a and a reverse-gear driving gear Ra, the input shaft I is sleeved with a third-gear driving gear 3a, a fourth-gear driving gear 4a and a fifth-gear driving gear 5a in an empty mode, the third-gear driving gear 3a and the fourth-gear driving gear 4a are selectively in power coupling connection with the input shaft I through an input shaft double synchronizer S2, and the fifth-gear driving gear 5a is selectively in power coupling connection with the input shaft I through an input shaft single synchronizer S3.
The output shaft II is provided with a first-gear driven gear 1b and a second-gear driven gear 2b in an empty sleeve mode, the first-gear driven gear 1b and the second-gear driven gear 2b are selectively in power coupling connection with the output shaft II through an output shaft double synchronizer S1, the output shaft II is fixedly provided with a third-gear driven gear 3b, a fourth-gear driven gear 4b, a fifth-gear driven gear 5b, a reverse-gear driven gear Rb and an output gear Za, and the reverse-gear driven gear Rb is arranged on a joint sleeve of the output shaft double synchronizer S1.
The reverse gear shaft III is provided with a reverse gear transmission gear Rab, and the reverse gear transmission gear Rab is slidably arranged on the reverse gear shaft III between a first position and a second position along the axial direction of the reverse gear shaft III. When in the first position, the reverse drive gear Rab is engaged with the reverse drive gear Ra and the reverse driven gear Rb, the reverse drive gear Ra is engaged with the reverse drive gear Rab, the reverse drive gear Rab is engaged with the reverse driven gear Rb, and the reverse drive gear Rab is used for coupling the power of the reverse drive gear Ra to the reverse driven gear Rb. In the second position, at least one of the reverse drive gear Ra and the reverse driven gear Rb is disconnected from the reverse transmission gear Rab. The reverse gear transmission gear Rab is arranged on the reverse gear shaft III in a sleeved mode and is in sliding fit with the reverse gear shaft III.
The motor shaft of the motor generator 10 is coaxially and fixedly connected with the reverse shaft iii, for example, the motor shaft of the motor generator 10 is in power coupling connection with the reverse shaft iii through a coupler, the reverse shaft iii is fixedly connected with a reverse shaft side gear 1f, and the reverse shaft side gear 1f is meshed with a main reducer driven gear Zb.
Thus, the motor shaft of the motor generator 10 and the reverse gear shaft III are coaxially arranged, the transmission chain is short, the transmission efficiency is high, and the arrangement is convenient.
Example two
As shown in fig. 2, the power drive system 100 includes: engine 30, motor generator 10, transmission, the transmission includes: clutch C, input shaft I, output shaft II, reverse gear shaft III.
The input shaft I is selectively in power coupling connection with the engine 30 through a clutch C, the input shaft I is fixedly provided with a first-gear driving gear 1a, a second-gear driving gear 2a and a reverse-gear driving gear Ra, the input shaft I is sleeved with a third-gear driving gear 3a, a fourth-gear driving gear 4a and a fifth-gear driving gear 5a in an empty mode, the third-gear driving gear 3a and the fourth-gear driving gear 4a are selectively in power coupling connection with the input shaft I through an input shaft double synchronizer S2, and the fifth-gear driving gear 5a is selectively in power coupling connection with the input shaft I through an input shaft single synchronizer S3.
The output shaft II is provided with a first-gear driven gear 1b, a second-gear driven gear 2b and an output gear Za in an empty sleeve mode, the first-gear driven gear 1b and the second-gear driven gear 2b are selectively in power coupling connection with the output shaft II through an output shaft double synchronizer S1, the output gear Za is selectively in power coupling connection with the output shaft II through an output synchronizer S4, the output shaft II is fixedly provided with a third-gear driven gear 3b, a fourth-gear driven gear 4b, a fifth-gear driven gear 5b and a reverse-gear driven gear Rb, and the reverse-gear driven gear Rb is arranged on an engaging sleeve of the output shaft double synchronizer S1.
The reverse gear shaft III is provided with a reverse gear transmission gear Rab, and the reverse gear transmission gear Rab is slidably arranged on the reverse gear shaft III between a first position and a second position along the axial direction of the reverse gear shaft III. When in the first position, the reverse drive gear Rab is engaged with the reverse drive gear Ra and the reverse driven gear Rb, the reverse drive gear Ra is engaged with the reverse drive gear Rab, the reverse drive gear Rab is engaged with the reverse driven gear Rb, and the reverse drive gear Rab is used for coupling the power of the reverse drive gear Ra to the reverse driven gear Rb. In the second position, at least one of the reverse drive gear Ra and the reverse driven gear Rb is disconnected from the reverse transmission gear Rab. And the reverse gear transmission gear Rab is in power coupling connection with the reverse gear shaft. The reverse gear shaft III is provided with an external spline, the reverse gear transmission gear Rab is provided with an internal spline, the reverse gear transmission gear Rab is sleeved on the reverse gear shaft III and is in sliding fit with the reverse gear shaft III, and the length of the external spline on the reverse gear shaft III is longer than that of the internal spline of the reverse gear transmission gear Rab. The reverse gear shaft III is sleeved with a reverse gear shaft side gear 1f, and the reverse gear shaft side gear 1f is selectively in power coupling connection with the reverse gear shaft III through a reverse gear shaft synchronizer S7.
The motor shaft of the motor generator 10 is coaxially and fixedly connected with the reverse shaft iii, for example, the motor shaft of the motor generator 10 is in power coupling connection with the reverse shaft iii through a coupler, and the reverse shaft side gear 1f is meshed with the driven gear Zb of the main speed reducer.
Thus, the motor shaft of the motor generator 10 and the reverse gear shaft III are coaxially arranged, the transmission chain is short, the transmission efficiency is high, and the arrangement is convenient.
The reverse-gear-side gear 1f and the reverse-gear transmission gear Rab are arranged in such a manner that the power drive system 100 has a parking power generation mode in which the output synchronizer S4 disconnects the output gear Za from the output shaft ii, the reverse-gear synchronizer S7 disconnects the reverse-gear-side gear 1f from the reverse gear shaft iii, the engine 30 operates, the motor generator 10 is a generator, the clutch C is engaged, the reverse-gear transmission gear Rab moves to the first position, and the engine 30 drives the motor generator 30 to generate power through the input shaft i, the reverse-gear driving gear Ra, the reverse-gear transmission gear Rab, and the reverse gear shaft iii.
EXAMPLE III
As shown in fig. 3, the power drive system 100 includes: engine 30, motor generator 10, transmission, the transmission includes: clutch C, input shaft I, output shaft II, reverse gear shaft III.
The input shaft I is selectively in power coupling connection with the engine 30 through a clutch C, the input shaft I is fixedly provided with a first-gear driving gear 1a, a second-gear driving gear 2a and a reverse-gear driving gear Ra, the input shaft I is sleeved with a third-gear driving gear 3a, a fourth-gear driving gear 4a and a fifth-gear driving gear 5a in an empty mode, the third-gear driving gear 3a and the fourth-gear driving gear 4a are selectively in power coupling connection with the input shaft I through an input shaft double synchronizer S2, and the fifth-gear driving gear 5a is selectively in power coupling connection with the input shaft I through an input shaft single synchronizer S3.
The output shaft II is provided with a first-gear driven gear 1b and a second-gear driven gear 2b in an empty sleeve mode, the first-gear driven gear 1b and the second-gear driven gear 2b are selectively in power coupling connection with the output shaft II through an output shaft double synchronizer S1, the output shaft II is fixedly provided with a third-gear driven gear 3b, a fourth-gear driven gear 4b, a fifth-gear driven gear 5b, a reverse-gear driven gear Rb and an output gear Za, and the reverse-gear driven gear Rb is arranged on a joint sleeve of the output shaft double synchronizer S1.
The reverse gear shaft III is provided with a reverse gear transmission gear Rab, and the reverse gear transmission gear Rab is slidably arranged on the reverse gear shaft III between a first position and a second position along the axial direction of the reverse gear shaft III. When in the first position, the reverse drive gear Rab is engaged with the reverse drive gear Ra and the reverse driven gear Rb, the reverse drive gear Ra is engaged with the reverse drive gear Rab, the reverse drive gear Rab is engaged with the reverse driven gear Rb, and the reverse drive gear Rab is used for coupling the power of the reverse drive gear Ra to the reverse driven gear Rb. In the second position, at least one of the reverse drive gear Ra and the reverse driven gear Rb is disconnected from the reverse transmission gear Rab. The reverse gear transmission gear Rab is arranged on the reverse gear shaft III in a sleeved mode and is in sliding fit with the reverse gear shaft III.
The reverse shaft III is fixedly connected with a first gear 1g on the reverse shaft side, a motor shaft of the motor generator 10 is fixedly connected with a motor side gear 1c, the motor side gear 1c is meshed with the first gear 1g on the reverse shaft side, a reverse shaft side gear 1f is fixed on the reverse shaft III, and the reverse shaft side gear 1f is meshed with a driven gear Zb of the main reducer.
Like this, motor generator 10's motor shaft and the III parallel arrangement of reverse gear axle, the driving chain is short, and transmission efficiency is high, and arranges the convenience, and motor generator 10 can arrange in the side of derailleur, shortens whole power drive system 100's axial length.
Example four
As shown in fig. 4, the power drive system 100 includes: engine 30, motor generator 10, transmission, the transmission includes: clutch C, input shaft I, output shaft II, reverse gear shaft III.
The input shaft I is selectively in power coupling connection with the engine 30 through a clutch C, the input shaft I is fixedly provided with a first-gear driving gear 1a, a second-gear driving gear 2a and a reverse-gear driving gear Ra, the input shaft I is sleeved with a third-gear driving gear 3a, a fourth-gear driving gear 4a and a fifth-gear driving gear 5a in an empty mode, the third-gear driving gear 3a and the fourth-gear driving gear 4a are selectively in power coupling connection with the input shaft I through an input shaft double synchronizer S2, and the fifth-gear driving gear 5a is selectively in power coupling connection with the input shaft I through an input shaft single synchronizer S3.
The output shaft II is provided with a first-gear driven gear 1b, a second-gear driven gear 2b and an output gear Za in an empty sleeve mode, the first-gear driven gear 1b and the second-gear driven gear 2b are selectively in power coupling connection with the output shaft II through an output shaft double synchronizer S1, the output gear Za is selectively in power coupling connection with the output shaft II through an output synchronizer S4, the output shaft II is fixedly provided with a third-gear driven gear 3b, a fourth-gear driven gear 4b, a fifth-gear driven gear 5b and a reverse-gear driven gear Rb, and the reverse-gear driven gear Rb is arranged on an engaging sleeve of the output shaft double synchronizer S1.
The reverse gear shaft III is provided with a reverse gear transmission gear Rab, and the reverse gear transmission gear Rab is slidably arranged on the reverse gear shaft III between a first position and a second position along the axial direction of the reverse gear shaft III. When in the first position, the reverse drive gear Rab is engaged with the reverse drive gear Ra and the reverse driven gear Rb, the reverse drive gear Ra is engaged with the reverse drive gear Rab, the reverse drive gear Rab is engaged with the reverse driven gear Rb, and the reverse drive gear Rab is used for coupling the power of the reverse drive gear Ra to the reverse driven gear Rb. In the second position, at least one of the reverse drive gear Ra and the reverse driven gear Rb is disconnected from the reverse transmission gear Rab. And the reverse gear transmission gear Rab is in power coupling connection with the reverse gear shaft. The reverse gear shaft III is provided with an external spline, the reverse gear transmission gear Rab is provided with an internal spline, the reverse gear transmission gear Rab is sleeved on the reverse gear shaft III and is in sliding fit with the reverse gear shaft III, and the length of the external spline on the reverse gear shaft III is longer than that of the internal spline of the reverse gear transmission gear Rab. The reverse gear shaft III is sleeved with a reverse gear shaft side gear 1f, and the reverse gear shaft side gear 1f is selectively in power coupling connection with the reverse gear shaft III through a reverse gear shaft synchronizer S7.
The reverse shaft III is fixedly connected with a first gear 1g on the reverse shaft side, a motor shaft of the motor generator 10 is fixedly connected with a motor side gear 1c, the motor side gear 1c is meshed with the first gear 1g on the reverse shaft side, a reverse shaft III hollow sleeve is provided with a reverse shaft side gear 1f, the reverse shaft side gear 1f is selectively connected with a reverse shaft III power coupling through a reverse shaft synchronizer S7, and the reverse shaft side gear 1f is meshed with a main reducer driven gear Zb.
Like this, motor generator 10's motor shaft and reverse gear shaft III are with parallel arrangement, and the driving chain is short, and transmission efficiency is high, and arrange conveniently, and motor generator 10 can arrange in the side of derailleur, shortens whole power drive system 100's axial length.
The reverse-gear-side gear 1f and the reverse-gear transmission gear Rab are arranged in such a manner that the power drive system 100 has a parking power generation mode in which the output synchronizer S4 disconnects the output gear Za from the output shaft ii, the reverse-gear synchronizer S7 disconnects the reverse-gear-side gear 1f from the reverse gear shaft iii, the engine 30 operates, the motor generator 10 is a generator, the clutch C is engaged, the reverse-gear transmission gear Rab moves to the first position, and the engine 30 drives the motor generator 30 to generate power through the input shaft i, the reverse-gear driving gear Ra, the reverse-gear transmission gear Rab, and the reverse gear shaft iii.
The invention also discloses a vehicle 1000.
As shown in fig. 6, the vehicle 1000 according to the embodiment of the present invention has the power driving system 100 according to any one of the embodiments, the vehicle 1000 according to the embodiment of the present invention may implement pure electric drive, pure fuel drive, and hybrid drive, the driving manner is flexible and multiple-choice, the control of the engine 30 and the motor is relatively independent, the system failure rate is low, even if the engine 30 and the transmission system fail, the power output of the motor during pure electric drive is not affected, the motor drive does not have the problem of gear shift interruption, and the vehicle is safe and practical, and is applicable to various working conditions.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A power drive system, comprising: an engine, a motor generator, a transmission, the transmission comprising:
a clutch;
the input shaft is selectively in power coupling connection with the engine through the clutch, and is provided with a reverse gear driving gear and a gear driving gear;
the output shaft is provided with a reverse gear driven gear, a gear driven gear correspondingly meshed with the gear driving gear and an output gear, and the output gear is meshed with a main speed reducer driven gear;
the motor generator is in power coupling connection with the driven gear of the main speed reducer through the reverse shaft, the reverse drive gear is slidably mounted on the reverse shaft between a first position and a second position along the axial direction of the reverse shaft, the reverse drive gear is meshed with the reverse drive gear and the reverse driven gear in the first position, and at least one of the reverse drive gear and the reverse driven gear is disconnected with the reverse drive gear in the second position;
the reverse gear transmission gear is in power coupling connection with the reverse gear shaft, the output shaft is sleeved with an output gear, the output gear can be selectively in power coupling connection with the output shaft through an output synchronizer, the reverse gear shaft is sleeved with a reverse gear shaft side gear, the reverse gear shaft side gear can be selectively in power coupling connection with the reverse gear shaft through a reverse gear shaft synchronizer, and the reverse gear shaft side gear is meshed with the driven gear of the main speed reducer;
the power drive system is provided with a parking power generation mode, in the parking power generation mode, the output synchronizer disconnects the output gear and the output shaft, the reverse shaft synchronizer disconnects the reverse shaft side gear and the reverse shaft, the engine works, the motor generator is a generator, the clutch is connected, the reverse transmission gear is in a first position, and the engine drives the motor generator to generate power through the input shaft, the reverse driving gear, the reverse transmission gear and the reverse shaft.
2. The power-driven system of claim 1, wherein the gear driving gear comprises at least one of a first gear driving gear and a second gear driving gear, the first gear driving gear is fixedly connected to the input shaft, and the second gear driving gear is freely sleeved on the input shaft and is selectively and dynamically coupled to the input shaft;
the gear driven gear comprises at least one of a first gear driven gear and a second gear driven gear, the first gear driven gear is correspondingly meshed with the first gear driving gear, the second gear driven gear is correspondingly meshed with the second gear driving gear, the first gear driven gear is sleeved on the output shaft in a non-slip mode and is selectively in power coupling connection with the output shaft, and the second gear driven gear is fixedly connected with the output shaft.
3. The power drive system as recited in claim 2 wherein said first gear drive gear comprises: one keeps off the driving gear and keeps off the driving gear, second type keeps off the position driving gear and includes: the transmission mechanism comprises a three-gear driving gear, a four-gear driving gear and a five-gear driving gear, wherein the three-gear driving gear and the four-gear driving gear are selectively coupled and connected with an input shaft through an input shaft double synchronizer, and the five-gear driving gear is selectively coupled and connected with the input shaft through an input shaft single synchronizer;
said first range driven gear comprises: one keep off driven gear, two keep off driven gear, one keep off driven gear with two keep off driven gear pass through output shaft bisynchronizer selectively with output shaft power coupling connects, second type fender driven gear includes: three keep off driven gear, four keep off driven gear, five keep off driven gear.
4. The power drive system of claim 2, further comprising: the first gear shifting actuating mechanism is used for controlling the reverse gear transmission gear and a single synchronizer on the input shaft so as to enable the reverse gear transmission gear and the single synchronizer to be linked; when the single synchronizer is in an initial position, at least one of the reverse driving gear and the reverse driven gear is disconnected with the reverse transmission gear, and the gear driven gear corresponding to the single synchronizer is disconnected with the input shaft; when the reverse gear transmission gear moves to a first position, the gear driven gear corresponding to the single synchronizer is disconnected from the input shaft; when the reverse gear transmission gear moves to a second position, the gear driven gear corresponding to the single synchronizer is in power coupling connection with the input shaft through the single synchronizer;
or the power drive system further comprises: the first gear shifting actuating mechanism is used for controlling the reverse gear transmission gear and the single synchronizer on the output shaft so as to enable the reverse gear transmission gear and the single synchronizer to be linked; when the single synchronizer is in an initial position, at least one of the reverse driving gear and the reverse driven gear is disconnected with the reverse transmission gear, and the gear driven gear corresponding to the single synchronizer is disconnected with the output shaft; when the reverse gear transmission gear moves to a first position, the gear driven gear corresponding to the single synchronizer is disconnected with the output shaft; when the reverse gear transmission gear moves to a second position, the gear driven gear corresponding to the single synchronizer is in power coupling connection with the output shaft through the single synchronizer.
5. A power drive system according to claim 2, wherein the gear driven gears comprise at least the first type of gear driven gear which is selectively in power coupling connection with the output shaft via a synchronizer, the reverse driven gear being provided at an engagement sleeve of the synchronizer.
6. A power drive system according to any of claims 1-5 wherein the reverse drive gear is idler with the reverse shaft, the power drive system having a hybrid reverse mode in which the engine is operated, the motor generator is operated, the reverse drive gear is moved to the first position and the clutch is engaged.
7. A power drive system according to any one of claims 1 to 5 wherein the power drive system has a fuel only reverse mode in which the engine is on, the motor generator is off, the reverse drive gear is moved to the first position and the clutch is engaged.
8. The power drive system according to any one of claims 1 to 5, wherein a reverse shaft-side gear is fixedly connected to the reverse shaft, the reverse shaft-side gear is engaged with the final drive driven gear, and a motor shaft of the motor generator is coaxially and fixedly connected to the reverse shaft;
or a reverse shaft side gear is sleeved on the reverse shaft in an empty mode, the reverse shaft side gear is meshed with the driven gear of the main speed reducer, and a motor shaft of the motor generator is coaxially and fixedly connected with the reverse shaft;
or, the reverse shaft is fixedly connected with a first gear on the reverse shaft side, a motor shaft of the motor generator is fixedly connected with a motor side gear, the motor side gear is meshed with the first gear on the reverse shaft side, the reverse shaft is fixedly provided with a gear on the reverse shaft side, and the gear on the reverse shaft side is meshed with a driven gear of the main reducer;
or, reverse gear axle fixedly connected with reverse gear axle side first gear, motor generator's motor shaft fixedly connected with motor side gear, motor side gear with the first gear engagement of reverse gear axle side, reverse gear axle free sleeve is provided with reverse gear axle side gear, reverse gear axle side gear with main reducer driven gear meshing.
9. A vehicle characterized by having a power drive system according to any one of claims 1-8.
CN201811459846.6A 2018-11-30 2018-11-30 Power driving system and vehicle Active CN111251872B (en)

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Citations (7)

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Publication number Priority date Publication date Assignee Title
JP2004210028A (en) * 2002-12-27 2004-07-29 Toyota Motor Corp Hybrid vehicle
CN104786815A (en) * 2015-01-16 2015-07-22 比亚迪股份有限公司 Speed changer, power transmission system and vehicle
CN205395749U (en) * 2016-02-15 2016-07-27 北京电子科技职业学院 Simple and easy hybrid power system
CN206067475U (en) * 2016-06-29 2017-04-05 比亚迪股份有限公司 Power-driven system and vehicle
CN206749515U (en) * 2017-04-20 2017-12-15 上海汽车变速器有限公司 Hybrid power system based on manual transmission
CN107539108A (en) * 2016-06-29 2018-01-05 比亚迪股份有限公司 Power-driven system and vehicle
CN107539103A (en) * 2016-06-29 2018-01-05 比亚迪股份有限公司 Power-driven system and vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004210028A (en) * 2002-12-27 2004-07-29 Toyota Motor Corp Hybrid vehicle
CN104786815A (en) * 2015-01-16 2015-07-22 比亚迪股份有限公司 Speed changer, power transmission system and vehicle
CN205395749U (en) * 2016-02-15 2016-07-27 北京电子科技职业学院 Simple and easy hybrid power system
CN206067475U (en) * 2016-06-29 2017-04-05 比亚迪股份有限公司 Power-driven system and vehicle
CN107539108A (en) * 2016-06-29 2018-01-05 比亚迪股份有限公司 Power-driven system and vehicle
CN107539103A (en) * 2016-06-29 2018-01-05 比亚迪股份有限公司 Power-driven system and vehicle
CN206749515U (en) * 2017-04-20 2017-12-15 上海汽车变速器有限公司 Hybrid power system based on manual transmission

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