CN117656815A - Multi-gear longitudinal hybrid electric vehicle driving system - Google Patents

Multi-gear longitudinal hybrid electric vehicle driving system Download PDF

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Publication number
CN117656815A
CN117656815A CN202311738822.5A CN202311738822A CN117656815A CN 117656815 A CN117656815 A CN 117656815A CN 202311738822 A CN202311738822 A CN 202311738822A CN 117656815 A CN117656815 A CN 117656815A
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CN
China
Prior art keywords
gear
meshed
shaft
planetary
output shaft
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Pending
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CN202311738822.5A
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Chinese (zh)
Inventor
梁伟
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Ruikong Zhihang Automobile Technology Nantong Co ltd
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Ruikong Zhihang Automobile Technology Nantong Co ltd
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Priority to CN202311738822.5A priority Critical patent/CN117656815A/en
Publication of CN117656815A publication Critical patent/CN117656815A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission

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

Abstract

The invention discloses a multi-gear longitudinal hybrid electric vehicle driving system, which comprises: the planetary gear mechanism comprises an engine, a planetary gear mechanism, a first clutch, a second clutch, a generator, a driving motor, a gear transmission system, a first gear shifting mechanism, a second gear shifting mechanism and an output shaft, wherein the first clutch is used for locking a sun gear of the planetary gear mechanism, the second clutch is used for locking the planetary gear mechanism, the output end of the planetary gear mechanism is connected with the output shaft through the gear transmission system and the first gear shifting mechanism, and a motor shaft of the driving motor is connected with the output shaft through the gear transmission mechanism and the second gear shifting mechanism. The multi-gear longitudinal hybrid electric vehicle driving system provided by the invention can realize stepless speed regulation hybrid driving and pure electric driving functions in all vehicle speed ranges, and has better fuel economy by combining fixed speed ratio gears of four engines direct driving and fixed speed ratios of two driving motors; the powerless interrupt shift can be achieved.

Description

Multi-gear longitudinal hybrid electric vehicle driving system
Technical Field
The invention relates to the technical field of hybrid electric vehicle drive transmission, in particular to a multi-gear longitudinal hybrid electric vehicle drive system.
Background
The hybrid electric vehicle is a power system mode of realizing whole vehicle driving by fusing electric energy of a power battery with a certain type of engine in a specific mode through a motor. The hybrid power has various configuration modes and can meet different functional and performance requirements of the whole vehicle.
In the existing hybrid power driving system aiming at the longitudinal vehicle type, the engine can only generate electricity simply, the electric energy supplementing requirement is met by a range-extending electricity generating mode, or the direct driving function of the engine in a specific vehicle speed section is realized by simple structure matching, so that the fuel consumption is high and the economy is poor; the requirement of multi-gear speed regulation of the engine cannot be met in the direct drive mode of the engine; the drive torque and the maximum rotational speed of the motor are also difficult to optimise.
Disclosure of Invention
The object of the present invention is to provide a multi-gear longitudinal hybrid vehicle drive system that solves one or more of the above-mentioned problems of the prior art.
The invention provides a multi-gear longitudinal hybrid electric vehicle driving system, which comprises: the gear shifting device comprises an engine, a planetary gear mechanism, a first clutch, a second clutch, a generator, a driving motor, a gear transmission system, a first gear shifting mechanism, a second gear shifting mechanism and an output shaft, wherein the output end of the engine is connected with a planet carrier of the planetary gear mechanism; the motor shaft of the driving motor is connected with the output shaft through a gear transmission mechanism and a second gear shifting mechanism, and the second gear shifting mechanism can enable the driving motor to realize two switchable gears; the gear transmission mechanism comprises a first parallel shaft, a second parallel shaft and a plurality of gears, wherein the first parallel shaft and the second parallel shaft are arranged in parallel with the output shaft, the first gear shifting mechanism is arranged on the first parallel shaft, and the second gear shifting mechanism is arranged on the second parallel shaft.
In some embodiments, the gear train comprises a first parallel shaft, a second parallel shaft, a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear, a seventh gear, an eighth gear, a ninth gear, a tenth gear, an eleventh gear, and a twelfth gear, the first gear and the second gear are connected to the output of the planetary gear train, the third gear, the fourth gear, and the fifth gear are disposed on the first parallel shaft, the first shift mechanism is disposed between the third gear and the fourth gear, the first shift mechanism is capable of meshing with the third gear or the fourth gear to perform a shift function, the first gear and the third gear mesh, the second gear and the fourth gear mesh, the fifth gear and the sixth gear mesh, and the sixth gear is connected to the output shaft; the seventh gear is connected with a motor shaft of the driving motor, the eighth gear, the ninth gear and the tenth gear are arranged on the second parallel shaft, the second gear shifting mechanism is arranged between the ninth gear and the tenth gear, the second gear shifting mechanism can be meshed with the ninth gear or the tenth gear to realize a gear shifting function, the seventh gear is meshed with the eighth gear, the ninth gear is meshed with the eleventh gear, the tenth gear is meshed with the twelfth gear, and the eleventh gear and the twelfth gear are respectively connected with the output shaft.
In some embodiments, the gear train comprises a first parallel shaft, a second parallel shaft, a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear, a seventh gear, an eighth gear, a ninth gear, a tenth gear, an eleventh gear, and a twelfth gear, the first gear is connected to the output of the planetary gear train, the third gear, the fourth gear, and the fifth gear are disposed on the first parallel shaft, the first shift mechanism is disposed between the fourth gear and the fifth gear, the first shift mechanism is capable of meshing with the fourth gear or the fifth gear to perform a shift function, the first gear and the third gear mesh, the second gear and the fourth gear mesh, the fifth gear and the sixth gear mesh, the second gear and the sixth gear are connected to the output shaft, respectively; the seventh gear is connected with a motor shaft of the driving motor, the eighth gear, the ninth gear and the tenth gear are arranged on the second parallel shaft, the second gear shifting mechanism is arranged between the ninth gear and the tenth gear, the second gear shifting mechanism can be meshed with the ninth gear or the tenth gear to realize a gear shifting function, the seventh gear is meshed with the eighth gear, the ninth gear is meshed with the eleventh gear, the tenth gear is meshed with the twelfth gear, and the eleventh gear and the twelfth gear are respectively connected with the output shaft.
In some embodiments, the output of the engine is provided with a shock absorber.
In some embodiments, a one-way clutch is provided between the output shaft of the engine and the planetary gear mechanism.
In some embodiments, the first gear shift mechanism has a neutral gear for disconnecting the output of the planetary gear mechanism from the output shaft.
In some embodiments, the second shift mechanism has a neutral gear for disconnecting the drive motor from the output shaft.
In some embodiments, the output shaft is coupled to the axle via a drive shaft.
The multi-gear longitudinal hybrid electric vehicle driving system provided by the invention can realize a pure electric mode and a mixed electric mode required by a vehicle type, can realize stepless speed regulation mixed electric driving and pure electric driving functions in all vehicle speed ranges, and has better fuel economy by combining fixed speed ratio gears of four direct engine driving and fixed speed ratios of two driving motors; the powerless interrupt shift can be achieved.
In addition, in the technical scheme of the invention, the technical scheme can be realized by adopting conventional means in the field without specific description.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a driving system of a multi-gear longitudinal hybrid electric vehicle according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a multi-gear longitudinal hybrid electric vehicle driving system according to another embodiment of the present invention.
Detailed Description
The terms "comprises" and "comprising," along with any variations thereof, in the present specification and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, system, article, or apparatus, but may include other steps or elements not expressly listed or inherent to such process, method, system, article, or apparatus.
For the purpose of making 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 clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
referring to fig. 1 of the specification, an embodiment of the present invention provides a multi-gear longitudinal hybrid electric vehicle driving system, including: the gear shifting device comprises an engine 1, a planetary gear mechanism 2, a first clutch 3, a second clutch 4, a generator 5, a driving motor 6, a gear transmission mechanism, a first gear shifting mechanism 8, a second gear shifting mechanism 9 and an output shaft 10.
The output end of the engine 1 is connected with a planet carrier of the planetary gear mechanism 2, the generator 5 is connected with a sun gear of the planetary gear mechanism 2, a gear ring of the planetary gear mechanism 2 serves as the output end of the planetary gear mechanism 2, the first clutch 3 is used for locking the sun gear of the planetary gear mechanism 2, the second clutch 4 is used for locking the planetary gear mechanism 2, the output end of the planetary gear mechanism 2 is connected with the output shaft 10 through a gear transmission mechanism and a first gear shifting mechanism 8, and the first gear shifting mechanism 8 can enable the output of the planetary gear mechanism 2 to realize two switchable gears; the motor shaft of the driving motor 6 is connected with the output shaft 10 through a gear transmission mechanism and a second gear shifting mechanism 9, and the second gear shifting mechanism 9 can enable the driving motor 6 to realize two switchable gears; the gear transmission mechanism comprises a first parallel shaft 701, a second parallel shaft 702 and a plurality of gears, wherein the first parallel shaft 701 and the second parallel shaft 702 are arranged in parallel with the output shaft 10, the first gear shifting mechanism 8 is arranged on the first parallel shaft 701, and the second gear shifting mechanism 9 is arranged on the second parallel shaft 702.
In particular, the generator 5 and the drive motor 6 may be arranged in a coaxial manner.
Referring to fig. 1 of the drawings, the gear transmission mechanism may include a first parallel shaft 701, a second parallel shaft 702, a first gear 703, a second gear 704, a third gear 705, a fourth gear 706, a fifth gear 707, a sixth gear 708, a seventh gear 709, an eighth gear 710, a ninth gear 711, a tenth gear 712, an eleventh gear 713, and a twelfth gear 714.
Specifically, the first gear 703 and the second gear 704 are connected to the output end of the planetary gear mechanism 2, the third gear 705, the fourth gear 706 and the fifth gear 707 are disposed on the first parallel shaft 701, the first gear shifting mechanism 8 is disposed between the third gear 705 and the fourth gear 706, the first gear shifting mechanism 8 can be meshed with the third gear 705 or the fourth gear 706 to realize a gear shifting function, the first gear 703 is meshed with the third gear 705, the second gear 704 is meshed with the fourth gear 706, the fifth gear 707 is meshed with the sixth gear 708, and the sixth gear 708 is connected to the output shaft 10; the seventh gear 709 is connected to a motor shaft of the driving motor 6, the eighth gear 710, the ninth gear 711 and the tenth gear 712 are disposed on the second parallel shaft 702, the second shift mechanism 9 is disposed between the ninth gear 711 and the tenth gear 712, the second shift mechanism 9 is capable of being meshed with the ninth gear 711 or the tenth gear 712 to realize a shift function, the seventh gear 709 is meshed with the eighth gear 710, the ninth gear 711 is meshed with the eleventh gear 713, the tenth gear 712 is meshed with the twelfth gear 714, and the eleventh gear 713 and the twelfth gear 714 are connected to the output shaft 10, respectively.
Referring to fig. 2 of the drawings, the gear transmission mechanism may include a first parallel shaft 701, a second parallel shaft 702, a first gear 703, a second gear 704, a third gear 705, a fourth gear 706, a fifth gear 707, a sixth gear 708, a seventh gear 709, an eighth gear 710, a ninth gear 711, a tenth gear 712, an eleventh gear 713, and a twelfth gear 714.
Wherein the first gear 703 is connected with the output end of the planetary gear mechanism 2, the third gear 705, the fourth gear 706 and the fifth gear 707 are arranged on the first parallel shaft 701, the first gear shifting mechanism 8 is arranged between the fourth gear 706 and the fifth gear 707, the first gear shifting mechanism 8 can be meshed with the fourth gear 706 or the fifth gear 707 to realize a gear shifting function, the first gear 703 is meshed with the third gear 705, the second gear 704 is meshed with the fourth gear 706, the fifth gear 707 is meshed with the sixth gear 708, and the second gear 704 and the sixth gear 708 are respectively connected with the output shaft 10; the seventh gear 709 is connected to a motor shaft of the driving motor 6, the eighth gear 710, the ninth gear 711 and the tenth gear 712 are disposed on the second parallel shaft 702, the second shift mechanism 9 is disposed between the ninth gear 711 and the tenth gear 712, the second shift mechanism 9 is capable of being meshed with the ninth gear 711 or the tenth gear 712 to realize a shift function, the seventh gear 709 is meshed with the eighth gear 710, the ninth gear 711 is meshed with the eleventh gear 713, the tenth gear 712 is meshed with the twelfth gear 714, and the eleventh gear 713 and the twelfth gear 714 are connected to the output shaft 10, respectively.
In an alternative embodiment, the first gear shifting mechanism 8 has a neutral gear for disconnecting the output of the planetary gear mechanism 2 from the output shaft 10. The second gear shifting mechanism 9 has a neutral gear for disconnecting the drive motor 6 from the output shaft 10.
In an alternative embodiment, the output of the engine 1 may be provided with a damper 11.
In an alternative embodiment, a one-way clutch 12 may be provided between the output shaft of the engine 1 and the planetary gear mechanism 2. Thus, when the engine 1 is not operating, the one-way clutch 12 can satisfy the operation requirement of the planetary gear mechanism 2 by the torque required by the planetary gear mechanism 2.
In an alternative embodiment, the output shaft 10 may be connected to the axle by a propeller shaft.
In an alternative embodiment, a fork shift mechanism may be used for both the first and second shift mechanisms 8, 9.
The multi-gear longitudinal hybrid electric vehicle driving system provided by the embodiment of the invention can realize the following driving modes:
in the pure electric drive mode, i.e. the engine 1 is not operated, the drive motor 6 alone or the generator 5 and the drive motor 6 are driven by two motors, at which time both the first clutch 3 and the second clutch 4 are open. In this driving mode, the second gear shifting mechanism 9 supports the driving motor 6 to achieve two pure electric gears, the first gear shifting mechanism 8 supports the generator 5 to achieve two pure electric gears, and since the gears of the first gear shifting mechanism 8 and the second gear shifting mechanism 9 are completely independently selected, four gears are available for selection in the pure electric mode.
The hybrid drive mode, i.e. the engine 1, the generator 5 and the drive motor 6 are all engaged, the generator 5 is used for generating electricity, and the drive motor 6 is used for energy recovery or power-assisted driving. When the rotation speed of the gear ring of the planetary gear mechanism 2 is fixed, the engine can work at the optimal point by adjusting the rotation speed of the motor, so that the stepless speed regulating function is realized. The driving motor 6 is in parallel driving relation with the engine 1 in a hybrid power driving mode, and the driving motor 6 can realize a power-assisted driving function under a high-torque working condition; the drive motor 6 can realize an energy recovery function when the vehicle is decelerating.
In the hybrid drive mode, by controlling the first clutch 3, the second clutch 4, the first shift mechanism 8 and the second shift mechanism 9, the following operation modes can be realized in particular:
a. the drive motor 6 is connected to the output shaft 10 via a second gear shift mechanism 9, whereby a shift of two gears can be achieved. Under the working condition of low speed and large torque, the driving motor is in a first gear with a larger speed ratio, so that better dynamic property is realized, under the working condition of high speed, the driving motor is in a first gear with a smaller speed ratio, the rotating speed of the driving motor is lower, the energy is saved, and when the driving motor 6 is not needed to participate in working, the driving motor is in a neutral gear, so that the dragging loss of the driving motor is effectively reduced.
b. Under the condition that the first clutch 3 and the second clutch 4 are both opened, the power of the engine 1 is output to the output shaft 10 through the gear ring of the planetary gear mechanism 2 and the first parallel shaft 701, the switching of two gears is realized through the first gear shifting mechanism 8 on the first parallel shaft 701, at this time, the engine 1 and the generator 5 work in a power splitting mode, and the switching of the two gears enables the driving system to realize a first power splitting mode and a second power splitting mode, and the two power splitting modes realize different efficiencies under different vehicle speeds, so that the proper power splitting mode can be selected according to actual conditions, and the efficiency of the whole vehicle is improved.
c. When the first clutch 3 is opened and the second clutch 4 is locked, the sun gear, the ring gear and the planet carrier of the planetary gear mechanism 2 rotate at the same rotation speed, the rotation speeds of the engine 1 and the generator 5 are the same, torque can be output in a mode of mutual superposition, and the first engine direct drive mode and the second engine direct drive mode can be realized by matching with gear selection of the first gear shifting mechanism 8.
d. When the first clutch 3 is locked and the second clutch 4 is opened, the sun gear of the planetary gear mechanism 2 is locked, the generator 5 does not participate in working, engine torque is transmitted to the gear ring through the planetary gear, the rotating speed of the gear ring is higher than that of the engine 1, fixed speed ratio output is maintained, and the third engine direct drive mode and the fourth engine direct drive mode can be realized by matching with gear selection of the first gear shifting mechanism 8.
e. In the two power split modes and the four engine direct drive modes, the driving motor can be switched between two gears, so that the multi-gear longitudinal hybrid electric vehicle driving system can realize eight gear combinations with fixed speed ratios and four power split gear combinations.
The multi-gear longitudinal hybrid electric vehicle driving system provided by the invention has the following beneficial effects:
(1) The engine and the generator are connected through the planetary gear mechanism, so that stepless speed regulation of the engine is realized. The engine torque is output through a gear ring of the planetary gear mechanism, the torque output by the gear ring can realize a two-gear switching function through a first gear shifting mechanism, a driving motor is connected with an output shaft through a gear transmission mechanism and a second gear shifting mechanism, the output of the driving motor can realize the two-gear switching function through the second gear shifting mechanism, and the output of the driving motor and the output of the planetary gear mechanism can realize parallel driving;
(2) In a pure electric driving mode, the generator and the driving motor can realize double-motor driving, and the capacities of all the components are utilized to the greatest extent;
(3) Two different planetary gear mechanism locking schemes can be realized through the first clutch and the second clutch, the direct drive function of the engine is realized, the engine can have four direct drive speed ratios in cooperation with the first gear shifting mechanism and the second gear shifting mechanism, and in the speed ratio switching of the engine, the realization of the power-free interruption gear shifting is ensured through the continuous output of the motor torque;
(4) The power output of the driving motor can be switched to two gears, the gear shifting of the driving motor can also realize power interruption-free gear shifting, and when the driving motor is shifted, the torque output by the engine through the planetary gear mechanism can be kept in a stable state, so that the driving requirement of a vehicle is met, and a driving system has no power loss when the driving motor is shifted;
(5) At high vehicle speed, the lower rotation speed of the driving motor can be realized by switching the gear of the driving motor, so that the energy consumption of the driving system is reduced; when the vehicle speed is low but the power demand is high, the gear of the driving motor is switched, so that larger torque amplifying capability can be realized; when the driving motor is not needed to participate in working, the gear of the driving motor can be adjusted to neutral gear, at this time, the direct driving mode of the engine is realized, the dragging loss of the driving motor is avoided, and the overall efficiency of the driving system is improved.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Also, it is to be understood that the dimensions of the various parts shown in the figures are not drawn to actual scale and that techniques, methods and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application.
The foregoing description of the preferred embodiments of the present disclosure is not intended to limit the disclosure, but rather to cover any and all modifications, equivalents, improvements or alternatives falling within the spirit and principles of the present disclosure.

Claims (8)

1. A multi-gear longitudinal hybrid vehicle drive system, comprising:
an engine (1), a planetary gear mechanism (2), a first clutch (3), a second clutch (4), a generator (5), a driving motor (6), a gear transmission mechanism, a first gear shifting mechanism (8), a second gear shifting mechanism (9) and an output shaft (10),
the output end of the engine (1) is connected with a planet carrier of the planetary gear mechanism (2), the generator (5) is connected with a sun gear of the planetary gear mechanism (2), a gear ring of the planetary gear mechanism (2) is used as the output end of the planetary gear mechanism (2),
the first clutch (3) is used for locking a sun gear of the planetary gear mechanism (2), the second clutch (4) is used for locking the planetary gear mechanism (2),
the output end of the planetary gear mechanism (2) is connected with the output shaft (10) through the gear transmission mechanism and a first gear shifting mechanism (8), and the first gear shifting mechanism (8) can enable the output of the planetary gear mechanism (2) to realize two switchable gears;
the motor shaft of the driving motor (6) is connected with the output shaft (10) through the gear transmission mechanism and a second gear shifting mechanism (9), and the second gear shifting mechanism (9) can enable the driving motor (6) to realize two switchable gears;
the gear transmission mechanism comprises a first parallel shaft (701), a second parallel shaft (702) and a plurality of gears, wherein the first parallel shaft (701) and the second parallel shaft (702) are arranged in parallel with the output shaft (10), the first gear shifting mechanism (8) is arranged on the first parallel shaft (701), and the second gear shifting mechanism (9) is arranged on the second parallel shaft (702).
2. The multi-range longitudinal hybrid vehicle drive system of claim 1, wherein,
the gear transmission mechanism comprises a first parallel shaft (701), a second parallel shaft (702), a first gear (703), a second gear (704), a third gear (705), a fourth gear (706), a fifth gear (707), a sixth gear (708), a seventh gear (709), an eighth gear (710), a ninth gear (711), a tenth gear (712), an eleventh gear (713) and a twelfth gear (714),
the first gear (703) and the second gear (704) are connected with the output end of the planetary gear mechanism (2), the third gear (705), the fourth gear (706) and the fifth gear (707) are arranged on the first parallel shaft (701), the first gear shifting mechanism (8) is arranged between the third gear (705) and the fourth gear (706), the first gear shifting mechanism (8) can be meshed with the third gear (705) or the fourth gear (706) to realize a gear shifting function, the first gear (703) is meshed with the third gear (705), the second gear (704) is meshed with the fourth gear (706), the fifth gear (707) is meshed with the sixth gear (708), and the sixth gear (708) is connected with the output shaft (10);
the seventh gear (709) is connected with a motor shaft of the driving motor (6), the eighth gear (710), the ninth gear (711) and the tenth gear (712) are arranged on the second parallel shaft (702), the second gear shifting mechanism (9) is arranged between the ninth gear (711) and the tenth gear (712), the second gear shifting mechanism (9) can be meshed with the ninth gear (711) or the tenth gear (712) to realize a gear shifting function, the seventh gear (709) is meshed with the eighth gear (710), the ninth gear (711) is meshed with the eleventh gear (713), the tenth gear (712) is meshed with the twelfth gear (714), and the eleventh gear (713) and the twelfth gear (714) are respectively connected with the output shaft (10).
3. The multi-range longitudinal hybrid vehicle drive system of claim 1, wherein,
the gear transmission mechanism comprises a first parallel shaft (701), a second parallel shaft (702), a first gear (703), a second gear (704), a third gear (705), a fourth gear (706), a fifth gear (707), a sixth gear (708), a seventh gear (709), an eighth gear (710), a ninth gear (711), a tenth gear (712), an eleventh gear (713) and a twelfth gear (714),
the first gear (703) is connected with the output end of the planetary gear mechanism (2), the third gear (705), the fourth gear (706) and the fifth gear (707) are arranged on the first parallel shaft (701), the first gear shifting mechanism (8) is arranged between the fourth gear (706) and the fifth gear (707), the first gear shifting mechanism (8) can be meshed with the fourth gear (706) or the fifth gear (707) to realize a gear shifting function, the first gear (703) is meshed with the third gear (705), the second gear (704) is meshed with the fourth gear (706), the fifth gear (707) is meshed with the sixth gear (708), and the second gear (704) and the sixth gear (708) are respectively connected with the output shaft (10);
the seventh gear (709) is connected with a motor shaft of the driving motor (6), the eighth gear (710), the ninth gear (711) and the tenth gear (712) are arranged on the second parallel shaft (702), the second gear shifting mechanism (9) is arranged between the ninth gear (711) and the tenth gear (712), the second gear shifting mechanism (9) can be meshed with the ninth gear (711) or the tenth gear (712) to realize a gear shifting function, the seventh gear (709) is meshed with the eighth gear (710), the ninth gear (711) is meshed with the eleventh gear (713), the tenth gear (712) is meshed with the twelfth gear (714), and the eleventh gear (713) and the twelfth gear (714) are respectively connected with the output shaft (10).
4. The multi-gear longitudinal hybrid vehicle drive system according to claim 1, characterized in that the output of the engine (1) is provided with a shock absorber (11).
5. The multi-gear vertical hybrid vehicle drive system according to claim 1, wherein a one-way clutch (12) is provided between an output shaft of the engine (1) and the planetary gear mechanism (2).
6. The multi-gear longitudinal hybrid vehicle drive system according to claim 1, characterized in that the first gear shift mechanism (8) has a neutral gear for disconnecting the output of the planetary gear mechanism (2) from the output shaft (10).
7. The multi-gear longitudinal hybrid vehicle drive system according to claim 1, characterized in that the second gear shift mechanism (9) has a neutral gear for disconnecting the drive motor (6) from the output shaft (10).
8. The multi-gear longitudinal hybrid vehicle drive system according to claim 1, wherein the output shaft (10) is connected to an axle via a propeller shaft.
CN202311738822.5A 2023-12-15 2023-12-15 Multi-gear longitudinal hybrid electric vehicle driving system Pending CN117656815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311738822.5A CN117656815A (en) 2023-12-15 2023-12-15 Multi-gear longitudinal hybrid electric vehicle driving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311738822.5A CN117656815A (en) 2023-12-15 2023-12-15 Multi-gear longitudinal hybrid electric vehicle driving system

Publications (1)

Publication Number Publication Date
CN117656815A true CN117656815A (en) 2024-03-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311738822.5A Pending CN117656815A (en) 2023-12-15 2023-12-15 Multi-gear longitudinal hybrid electric vehicle driving system

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