CN114274758A - Hybrid transmission, hybrid driving system and vehicle - Google Patents
Hybrid transmission, hybrid driving system and vehicle Download PDFInfo
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- CN114274758A CN114274758A CN202111682509.5A CN202111682509A CN114274758A CN 114274758 A CN114274758 A CN 114274758A CN 202111682509 A CN202111682509 A CN 202111682509A CN 114274758 A CN114274758 A CN 114274758A
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- 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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses a hybrid power gearbox, a hybrid power driving system and a vehicle, wherein the hybrid power gearbox comprises a box body, a single planet row, an intermediate shaft, a parallel gear set, an output transmission mechanism and seven execution mechanisms, wherein the first execution mechanism is selectively connected with a first parallel gear or a second parallel gear; the second actuating mechanism is selectively connected with the planet carrier or the box body; the third actuating mechanism is selectively connected with the third parallel gear or the fourth parallel gear; the fourth actuating mechanism is used for connecting or disconnecting the seventh parallel gear and the intermediate shaft; the fifth actuating mechanism selectively connects or disconnects the fifth parallel gear with the output gear; the sixth actuating mechanism can selectively connect or disconnect the sixth parallel gear with or from the output gear; the invention distributes and guides the power output by the engine and the motor through a plurality of actuating mechanisms and a plurality of parallel gears, thereby realizing multi-gear output and fixed speed ratio output of the planetary gear set on the premise of double power of the engine.
Description
Technical Field
The present application relates to the field of hybrid vehicle technology, and more particularly, to a hybrid transmission, a hybrid drive system, and a vehicle.
Background
The hybrid electric vehicle is provided with more than two power sources, such as a storage battery, a fuel cell, a solar cell, an internal combustion engine, an electric motor and the like, and the current hybrid electric vehicle generally refers to a hybrid driving mode of the internal combustion engine and the electric motor.
At present, the power structural forms of the hybrid electric vehicle are mainly 3. One is a series structure, one is a parallel structure, and the other is a series-parallel structure. The parallel structure mainly drives the engine to run, and utilizes the characteristic that the motor generates strong power when being started, so that the fuel consumption of the engine is reduced by using the auxiliary driving mode of the motor when the fuel consumption of the engine is large, such as starting and accelerating of an automobile. The series-parallel structure mode means that the vehicle runs only by the drive of the electric motor at low speed, and the engine and the motor are matched for driving when the speed is increased. When the speed is increased, the engine and the motor share the power efficiently. The series structure mode is an electric automobile which runs only by motor drive, the engine is only used as a power source to enable the generator to generate power, the automobile runs only by motor drive, and the driving system is only a motor.
However, in any of the above hybrid vehicles, due to the addition of the motor, the structure of the original power transmission device is inevitably complicated, the system is huge, the axial size of the power transmission device is increased, the corresponding gear selection is less, the transmission efficiency is low, when the electric quantity is insufficient to support the driving motor to work in a long-time crawling working condition, the intervention of the engine end is needed, and the energy of the engine is wasted in low-speed running.
Disclosure of Invention
To the defect that exists among the prior art, this application provides a hybrid transmission, hybrid drive system and vehicle to the problem that the mixed system structure among the solution prior art is complicated and transmission efficiency is low.
The above purpose of the invention is mainly realized by the following technical scheme:
a hybrid transmission, comprising:
a box body;
the intermediate shaft is used for connecting a motor;
a parallel gear set including a first parallel gear, a second parallel gear, a third parallel gear, a fourth parallel gear, a fifth parallel gear, a sixth parallel gear, a seventh parallel gear, and an eighth parallel gear connected to a sun gear shaft of a single planet row, the first parallel gear meshing with both the third parallel gear and the fifth parallel gear, the second parallel gear meshing with both the fourth parallel gear and the sixth parallel gear, the seventh parallel gear meshing with the eighth parallel gear;
the gear ring of the single planet row is used for being connected with an engine, and a seventh executing mechanism used for connecting or disconnecting the first parallel gear is arranged on the gear ring;
the output transmission mechanism comprises an output gear and an empty sleeve shaft, and the output gear is empty sleeved on the empty sleeve shaft;
the first actuating mechanism is connected with the planet carrier of the single planet row and can be selectively connected with the first parallel gear or the second parallel gear;
the second actuating mechanism is connected with the sun wheel shaft of the single planet row and is selectively connected with the planet carrier or the box body;
a third actuator connected to the intermediate shaft and selectively connectable with the third parallel gear or the fourth parallel gear;
a fourth actuator connected to the countershaft and selectively connecting and disconnecting the seventh parallel gear to the countershaft;
the fifth actuating mechanism is sleeved on the hollow sleeve shaft in a hollow mode and can selectively connect or disconnect the fifth parallel gear and the output gear;
and the sixth actuating mechanism is sleeved on the hollow sleeve shaft in a hollow mode and can selectively connect or disconnect the sixth parallel gear and the output gear.
Further, the single planet row is embedded in the first parallel gear; the first parallel gear and the second parallel gear are sleeved on the planet carrier in a hollow mode.
Further, the gearbox also comprises a differential mechanism used for connecting wheel components, and the differential mechanism is meshed with the output gear; the differential is arranged in the box body.
Further, the third parallel gear, the fourth parallel gear and the seventh parallel gear are all sleeved on the intermediate shaft in a hollow manner; the fifth parallel gear and the sixth parallel gear are sleeved on the hollow sleeve shaft in a hollow mode, and the fifth parallel gear and the sixth parallel gear are distributed on two sides of the output gear.
Further, the first, second, third, fourth, fifth, sixth, and seventh actuators are synchronizers or clutches.
Further, the intermediate shaft, the sun gear shaft and the hollow shaft are parallel to each other.
Further, the intermediate shaft and the hollow shaft are distributed on two sides of the sun wheel shaft.
Based on the same inventive concept, the present invention also provides a hybrid drive system, comprising:
the hybrid transmission described above;
the engine is connected with a gear ring of the hybrid power gearbox;
and the motor is connected with the intermediate shaft of the hybrid power gearbox.
Furthermore, a torque limiting shock absorber is arranged between the gear ring and the engine.
Based on the same inventive concept, the invention also provides a vehicle comprising the hybrid power driving system.
Compared with the prior art, the invention has the advantages that:
the hybrid power driving system of the invention provides power jointly through an engine and a motor, is connected with the motor and is provided with an intermediate shaft and a parallel gear set, wherein a first parallel gear is meshed with a third parallel gear and a fifth parallel gear, a second parallel gear is meshed with a fourth parallel gear and a sixth parallel gear, a seventh parallel gear is meshed with an eighth parallel gear connected with a single planet row, the seventh parallel gear is connected with the engine through a gear ring of the single planet row, a seventh executing mechanism is arranged on the gear ring, and an output transmission mechanism comprises an output gear and an empty sleeve shaft; a first actuating mechanism is arranged on a planet carrier of the single planet row and is selectively connected with the first parallel gear or the second parallel gear; a second actuating mechanism is arranged on a sun gear shaft of the single planet row and is selectively connected with a planet carrier or a box body; a third actuating mechanism is arranged on the intermediate shaft and is selectively connected with a third parallel gear or a fourth parallel gear; a fourth actuator is arranged on the intermediate shaft and selectively connects or disconnects the seventh parallel gear with or from the intermediate shaft; a fifth executing mechanism is sleeved on the hollow sleeve shaft in a hollow mode, and the fifth parallel gear and the output gear can be connected or disconnected selectively; the sixth executing mechanism is sleeved on the hollow sleeve shaft in a hollow mode, and the sixth parallel gear is selectively connected or disconnected with the output gear so as to distribute and guide power output by the engine and the motor and achieve multi-gear output under the condition of double power of the engine.
According to the hybrid power gearbox, a pair of gears are additionally arranged on a motor shaft to realize that the planetary row is fixed in speed ratio relation through any two elements, so that the planetary row is output at a fixed speed ratio; the E-CVT mode of the engine can be realized in a low-speed interval under the condition of a single motor, and the starting function is realized under the condition of not increasing a friction element; and the parallel shaft gear transmission is realized at medium and high speed, so that the transmission efficiency is improved; the single motor can realize unified rotational speed through jackshaft adjustment sun gear rotational speed when adjusting the speed of a motor vehicle, improves the smoothness of shifting when improving the speed of shifting.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a hybrid drive system according to an embodiment of the present application.
In the figure: 1. a first parallel gear; 2. a second parallel gear; 3. a third parallel gear; 4. a fourth parallel gear; 5. a fifth parallel gear; 6. a sixth parallel gear; 7. a seventh parallel gear; 8. an eighth parallel gear; 9. a first actuator; 10. a second actuator; 11. a third actuator; 12. a fourth actuator; 13. a fifth actuator; 14. a sixth actuator; 15. a seventh actuator; 16. a box body; 17. an engine; 18. a motor; 19. a differential mechanism; 20. a torque limiting damper; 21. an intermediate shaft; 22. an output gear; 23. a planet carrier; 24. a ring gear; 25. a sun gear shaft; 26. and (4) hollowing the sleeve shaft.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
In the related technology, a one-way locking mechanism is arranged in a hybrid power system, the one-way locking mechanism comprises a one-way clutch and a brake, an inner ring of the one-way clutch is connected with a sun gear shaft of a planet row, and an outer ring of the one-way clutch is connected with the brake. When the engine is started to work, the one-way locking mechanism enables the clutch structure to realize the speed ratio switching of the planetary gear set. The one-way locking mechanism and the clutch have high cost, and the axial size of the clutch is large, which is not beneficial to carrying.
Therefore, the embodiments of the present application provide a hybrid drive system and a vehicle, which can solve the technical problems of the related art to some extent. The present application will now be described in detail with reference to the following figures and specific examples:
example 1
As shown in fig. 1, a hybrid drive system generally includes three main components, a hybrid transmission engine 17 and an electric machine 18. Wherein:
the engine 17 is connected to the ring gear 24 of the hybrid gearbox.
The electric machine 18 is connected to an intermediate shaft 21 of the hybrid gearbox.
Further, on the basis of the above embodiment, a torque limiting damper 20 is further arranged between the gear ring 24 and the engine 17, the torque limiting damper utilizes a disc spring, a friction plate, a spline hub and the like to transmit torque of the engine 17, overload damage of a transmission system is prevented by slipping between friction surfaces when torque is overloaded, and meanwhile, an arc-shaped spring torsion damper is internally installed, so that a larger torsional vibration angular acceleration at a flywheel end of the engine 17 can be attenuated into a smaller angular acceleration at an input shaft of the gearbox, shaft teeth in the gearbox are protected from being damaged during torsional impact, and the NVH problem of the transmission system such as tooth knocking sound generated by an idle gear in the gearbox is prevented.
The hybrid transmission is a core component of a hybrid drive system, and the embodiment provides a new architecture of the hybrid transmission, and referring to fig. 1, the hybrid transmission of the embodiment specifically includes:
a box 16.
The parallel gear set comprises a first parallel gear 1, a second parallel gear 2, a third parallel gear 3, a fourth parallel gear 4, a fifth parallel gear 5, a sixth parallel gear 6, a seventh parallel gear 7 and an eighth parallel gear 8, wherein the seventh parallel gear 7 is used for being sleeved on an intermediate shaft 21, the eighth parallel gear 8 is used for being connected with a sun gear shaft 25, the first parallel gear 1 is meshed with the third parallel gear 3 and the fifth parallel gear 5, the second parallel gear 2 is meshed with the fourth parallel gear 4 and the sixth parallel gear 6, and the seventh parallel gear 7 is meshed with the eighth parallel gear 8.
The single planetary row comprises a sun gear, a sun gear shaft 25, a planet gear, a planet carrier 23 and a gear ring 24, wherein the sun gear is fixedly connected with the sun gear shaft 25, the gear ring 24 of the single planetary row is used for being connected with the engine 17 and transmitting the torque of the engine 17, and the gear ring 24 is provided with a seventh execution mechanism 15 used for connecting or disconnecting the first parallel gear 1.
The output transmission mechanism comprises an output gear 22 and an idle sleeve shaft 26, and the output gear 22 is idle sleeved on the idle sleeve shaft 26.
And the first actuating mechanism 9 is arranged on the planet carrier 23 of the single planet row and is selectively connected with the first parallel gear 1 or the second parallel gear 2.
And the second actuator 10 is arranged on the sun gear shaft 25 of the single planet row and is selectively connected with the planet carrier 23 or the box 16.
And a third actuator 11 connected with the intermediate shaft 21 and selectively connected with the third parallel gear 3 or the fourth parallel gear 4.
And a fourth actuator 12 provided on the intermediate shaft 21 and used for connecting or disconnecting the seventh parallel gear 7 with the intermediate shaft 21.
And a fifth actuator 13 arranged on the hollow sleeve shaft 26 and selectively connected with the fifth parallel gear 5 and the output gear 22.
And a sixth actuator 14, which is arranged on the hollow sleeve shaft 26 and is selectively connected with the sixth parallel gear 6 and the output gear 22.
It is understood that in other embodiments, the box 16 may be equivalent to other fixed and different structures of the vehicle body, such as a vehicle body frame of an engine room.
The sun, planet and ring gears 24 effect drive and power split in the conventional mesh form disclosed in the prior art.
The hybrid transmission of the embodiment can realize multi-gear driving under flexible combination of the engine 17 and the motor 18.
Each gear is described in detail below:
a first gear is as follows:
the third actuator 11, the fourth actuator 12 and the seventh actuator 15 are disconnected, the second actuator 10 is connected with the box 16, the first actuator 9 is connected with the first parallel gear 1, the fifth actuator 13 is connected with the fifth parallel gear 5 and the output gear 22, and the power transmission path is as follows: the power output by the engine 17 is transmitted to the wheels through the differential 19 sequentially by the ring gear 24, the planet carrier 23, the first actuating mechanism 9, the first parallel gear 1, the fifth parallel gear 5, the fifth actuating mechanism 13 and the output gear 22.
Gear two:
the third actuator 11, the fourth actuator 12 and the seventh actuator 15 are disconnected, the second actuator 10 is connected with the box 16, the first actuator 9 is connected with the second parallel gear 2, the sixth actuator 14 is connected with the sixth parallel gear 6 and the output gear 22, and the power transmission path is as follows: the power output by the engine 17 is transmitted to the wheels through the differential 19 sequentially by the ring gear 24, the planet carrier 23, the first actuating mechanism 9, the second parallel gear 2, the sixth parallel gear 6, the sixth actuating mechanism 14 and the output gear 22.
Gear three:
the third actuator 11, the fourth actuator 12 and the seventh actuator 15 are disconnected, the second actuator 10 is connected with the planet carrier 23, the first actuator 9 is connected with the first parallel gear 1, the fifth actuator 13 is connected with the fifth parallel gear 5 and the output gear 22, and the power transmission path is as follows: the power output by the engine 17 is transmitted to the wheels through the differential 19 sequentially by the ring gear 24, the planet carrier 23, the first actuating mechanism 9, the first parallel gear 1, the fifth parallel gear 5, the fifth actuating mechanism 13 and the output gear 22.
And a fourth gear:
the third actuator 11, the fourth actuator 12 and the seventh actuator 15 are disconnected, the second actuator 10 is connected with the planet carrier 23, the first actuator 9 is connected with the second parallel gear 2, the sixth actuator 14 is connected with the sixth parallel gear 6 and the output gear 22, and the power transmission path is as follows: the power output by the engine 17 is transmitted to the wheels through the differential 19 sequentially by the ring gear 24, the planet carrier 23, the first actuating mechanism 9, the second parallel gear 2, the sixth parallel gear 6, the sixth actuating mechanism 14 and the output gear 22.
Gear V:
the third actuator 11 is connected with the intermediate shaft 21 and the third parallel gear 3, the fourth actuator 12 is connected with the seventh parallel gear 7 and the intermediate shaft 21, the seventh actuator 15 is connected with the gear ring 24 and the first parallel gear 1, the second actuator 10 is disconnected with the planet carrier 23 and the box 16, the first actuator 9 is connected with the first parallel gear 1, the fifth actuator 13 is connected with the fifth parallel gear 5 and the output gear 22, and the power transmission path is as follows: the power output by the engine 17 is transmitted to the wheels through the differential 19 in sequence by the gear ring 24, the seventh actuating mechanism 15, the first parallel gear 1, the third parallel gear 3, the third actuating mechanism 11, the intermediate shaft 21, the seventh parallel gear 7, the eighth parallel gear 8, the sun gear shaft 25, the planet gear, the planet carrier 23, the first actuating mechanism 9, the first parallel gear 1, the fifth parallel gear 5, the fifth actuating mechanism 13 and the output gear 22.
And in the fifth gear state, a fixed speed ratio exists between the ring gear 24 and the sun gear.
On the basis of the fifth gear, the output shaft of the motor 18 can be connected to the intermediate shaft 21, so that the dual power sources of the engine 17 and the motor 18 are achieved, and the output power is improved.
Gear six:
the third actuator 11 is connected with the intermediate shaft 21 and the third parallel gear 3, the fourth actuator 12 is connected with the seventh parallel gear 7 and the intermediate shaft 21, the seventh actuator 15 is connected with the gear ring 24 and the first parallel gear 1, the second actuator 10 is disconnected with the planet carrier 23 and the box 16, the first actuator 9 is connected with the second parallel gear 2, the sixth actuator 14 is connected with the sixth parallel gear 6 and the output gear 22, and the power transmission path is as follows: the power output by the engine 17 is transmitted to the wheels through the differential 19 in sequence by passing through the ring gear 24, the seventh actuating mechanism 15, the first parallel gear 1, the third parallel gear 3, the third actuating mechanism 11, the intermediate shaft 21, the seventh parallel gear 7, the eighth parallel gear 8, the sun gear shaft 25, the planet gear, the planet carrier 23, the first actuating mechanism 9, the second parallel gear 2, the sixth parallel gear 6, the sixth actuating mechanism 14 and the output gear 22.
And in the sixth gear state, a fixed speed ratio exists between the ring gear 24 and the sun gear.
On the basis of the sixth gear, the output shaft of the motor 18 can be connected to the intermediate shaft 21, so that the dual power sources of the engine 17 and the motor 18 are achieved.
A seventh gear:
the third actuator 11 is connected with the intermediate shaft 21 and the fourth parallel gear 4, the fourth actuator 12 is connected with the seventh parallel gear 7 and the intermediate shaft 21, the seventh actuator 15 is connected with the gear ring 24 and the first parallel gear 1, the second actuator 10 is disconnected with the planet carrier 23 and the box 16, the first actuator 9 is connected with the second parallel gear 2, the fifth actuator 13 is connected with the fifth parallel gear 5 and the output gear 22, the sixth actuator 14 is disconnected with the sixth parallel gear 6 and the output gear 22, and the power transmission path is as follows: the power output by the engine 17 passes through the gear ring 24, the seventh execution mechanism 15, the first parallel gear 1, the fifth parallel gear 5, the fifth execution mechanism 13 and the output gear 22 in sequence, and is transmitted to wheels through the differential 19, and meanwhile, a fixed speed ratio is formed between the sun gear and the planet carrier 23 through the sun gear shaft 25, the eighth parallel gear 8, the seventh parallel gear 7, the intermediate shaft 21, the third execution mechanism 11, the fourth parallel gear 4, the second parallel gear 2 and the first execution mechanism 9.
On the basis of the seventh gear, an output shaft of the motor 18 can be connected to the intermediate shaft 21, so that a double power source of the engine 17 and the motor 18 is achieved.
And eighth gear:
the third actuator 11 connects the intermediate shaft 21 with the fourth parallel gear 4, the fourth actuator 12 connects the seventh parallel gear 7 with the intermediate shaft 21, the seventh actuator 15 disconnects the ring gear 24 from the first parallel gear 1, the second actuator 10 disconnects from the planet carrier 23 and the box 16, the first actuator 9 connects the second parallel gear 2, the fifth actuator 13 disconnects the fifth parallel gear 5 and the output gear 22, the sixth actuator 14 connects the sixth parallel gear 6 and the output gear 22, and the power transmission path is as follows: the power output by the engine 17 is transmitted to wheels through a differential 19 sequentially through a gear ring 24, a planet carrier 23, a first executing mechanism 9, a second parallel gear 2, a sixth parallel gear 6, a sixth executing mechanism 14 and an output gear 22, and meanwhile, a fixed speed ratio is formed between a sun gear and the planet carrier 23 through a sun gear shaft 25, an eighth parallel gear 8, a seventh parallel gear 7, an intermediate shaft 21, a third executing mechanism 11, a fourth parallel gear 4, the second parallel gear 2 and the first executing mechanism 9.
On the basis of the eighth gear, an output shaft of the motor 18 can be connected to the intermediate shaft 21, so that a double power source of the engine 17 and the motor 18 is achieved.
Gear nine:
the third actuator 11 disconnects the intermediate shaft 21 from the fourth parallel gear 4, the fourth actuator 12 disconnects the seventh parallel gear 7 from the intermediate shaft 21, the seventh actuator 15 connects the gear ring 24 with the first parallel gear 1, the second actuator 10 is connected with the box 16, the first actuator 9 is connected with the second parallel gear 2, the fifth actuator 13 is connected with the fifth parallel gear 5 and the output gear 22, the sixth actuator 14 is connected with the sixth parallel gear 6 and the output gear 22, and the power transmission path is as follows: the power output by the engine 17 is transmitted to wheels through a differential 19 sequentially through a gear ring 24, a seventh execution mechanism 15, a first parallel gear 1, a fifth parallel gear 5, a fifth execution mechanism 13 and an output gear 22, and meanwhile, the output gear 22 is connected with a sixth parallel gear 6, a second parallel gear 2, a first execution mechanism 9 and a planet carrier 23 through a sixth execution mechanism 14, so that the gear ring 24 and the sun wheel form a fixed speed ratio.
The working principle of the embodiment is as follows: the engine 17 and the motor 18 jointly provide power, and a parallel gear set is arranged, wherein the first parallel gear 1 is meshed with the third parallel gear 3 and the fifth parallel gear 5, the second parallel gear 2 is meshed with the fourth parallel gear 4 and the sixth parallel gear 6, the seventh parallel gear 7 is meshed with the eighth parallel gear 8, the seventh parallel gear is connected with the engine 17 through a gear ring 24 of a single-row planet row, a seventh executing mechanism 15 is arranged on the gear ring 24, and the output transmission mechanism comprises an output gear 22 and an empty sleeve shaft 26; the first actuating mechanism 9 is arranged on a planet carrier 23 of the single planet row and is selectively connected with the first parallel gear 1 or the second parallel gear 2; by arranging the second actuator 10 on the sun gear shaft 25 of the single planet row and optionally connected with the planet carrier 23 or the box 16; a third actuating mechanism 11 is arranged and connected with an intermediate shaft 21 and is selectively connected with the third parallel gear 3 or the fourth parallel gear 4; a fourth actuator 12 is arranged on the intermediate shaft 21 and is used for connecting or disconnecting the seventh parallel gear 7 with the intermediate shaft 21; a fifth actuator 13 is arranged on the hollow sleeve shaft 26 and is selectively connected with the fifth parallel gear 5 and the output gear 22; the sixth actuator 14 is arranged on the free sleeve shaft 26 and selectively connected with the sixth parallel gear 6 and the output gear 22 so as to distribute and guide the power output by the engine 17 and the motor 18 and realize multi-gear output under the condition of double power of the engine 17.
A pair of gears are added through a shaft of the motor 18 to realize that the fixed speed ratio relation of the planet row through any two elements is realized, so that the fixed speed ratio of the planet row is output; the E-CVT mode of the engine 17 can be realized in a low-speed range under the condition of a single motor 18, and the starting function is realized under the condition of not increasing a friction element; and the parallel shaft gear transmission is realized at medium and high speed, so that the transmission efficiency is improved; the single motor 18 can adjust the speed of a vehicle and adjust the rotating speed of the sun wheel through the intermediate shaft to realize uniform rotating speed, so that the gear shifting smoothness is improved while the gear shifting speed is improved.
The utility model provides a hybrid drive system, engine power flows is by the ring gear input, and planet carrier/sun gear shaft output compares in the power form of planet carrier input, ring gear output among the prior art, can obtain bigger moment of torsion at the output of planet row, and dynamic nature is good, only need dispose a planet row can, simplify hybrid drive system's structure.
Further, on the basis of the above embodiment, in order to optimize the internal structure of the hybrid transmission, the first parallel gear 1 and the second parallel gear 2 are both sleeved on the planet carrier 23, and the single planet row is embedded in the first parallel gear 1, so as to shorten the axial dimension of the hybrid transmission.
Further, on the basis of the above embodiment, the third parallel gear 3, the fourth parallel gear 4 and the seventh parallel gear 7 are all freely sleeved on the intermediate shaft 21, and the third parallel gear 3 and the fourth parallel gear 4 are positioned on one side of the motor 18, and the seventh parallel gear 7 is positioned on one side of the motor 18, so that the third parallel gear 3, the fourth parallel gear 4 and the seventh parallel gear 7 are convenient to mount and arrange.
Further, on the basis of the above-mentioned embodiment, the output gear 22, the fifth parallel gear 5 and the sixth parallel gear 6 are all freely sleeved on the free sleeve shaft 26, and the fifth parallel gear 5 and the sixth parallel gear 6 are located on both sides of the output gear 22, so that the installation and arrangement of the output gear 22, the fifth parallel gear 5 and the sixth parallel gear 6 are facilitated.
Further, the first actuator 9, the second actuator 10, the third actuator 11, the fourth actuator 12, the fifth actuator 13, the sixth actuator 14, and the seventh actuator 15 are synchronizers or clutches.
Further, on the basis of the above embodiment, the intermediate shaft 21, the sun gear shaft 25, and the idler shaft 26 are parallel to each other, thereby shortening the axial dimension of the hybrid transmission.
Further, on the basis of the above embodiment, the intermediate shaft 21 and the output shaft are distributed on both sides of the sun gear shaft 25, so that the motor and the differential are distributed on both sides of the single planet row, and the arrangement of internal parts of the hybrid transmission is facilitated.
Example 2
Based on the same inventive concept, the invention further provides a vehicle comprising the hybrid drive system of any one of the embodiments 1, and specifically, in the hybrid vehicle, except that the structure of the hybrid transmission is the hybrid transmission in the above embodiments, the structures, connection relationships, installation positions and the like of other devices can refer to the related disclosures in the prior art, and will not be described herein.
It should be understood that the terms first, second, etc. are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.
It is to be understood that the terms "upper," "vertical," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship that is conventionally used for placing the disclosed articles of manufacture or that is conventionally understood by those skilled in the art, which is intended merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
In the following description, specific details are provided to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A hybrid transmission, comprising:
a box body;
the intermediate shaft is used for connecting a motor;
a parallel gear set including a first parallel gear, a second parallel gear, a third parallel gear, a fourth parallel gear, a fifth parallel gear, a sixth parallel gear, a seventh parallel gear, and an eighth parallel gear connected to a sun gear shaft of a single planet row, the first parallel gear meshing with both the third parallel gear and the fifth parallel gear, the second parallel gear meshing with both the fourth parallel gear and the sixth parallel gear, the seventh parallel gear meshing with the eighth parallel gear;
the gear ring of the single planet row is used for being connected with an engine, and a seventh executing mechanism used for connecting or disconnecting the first parallel gear is arranged on the gear ring;
the output transmission mechanism comprises an output gear and an empty sleeve shaft, and the output gear is empty sleeved on the empty sleeve shaft;
the first actuating mechanism is connected with the planet carrier of the single planet row and can be selectively connected with the first parallel gear or the second parallel gear;
the second actuating mechanism is connected with the sun wheel shaft of the single planet row and is selectively connected with the planet carrier or the box body;
a third actuator connected to the intermediate shaft and selectively connectable with the third parallel gear or the fourth parallel gear;
a fourth actuator connected to the countershaft and selectively connecting and disconnecting the seventh parallel gear to the countershaft;
the fifth actuating mechanism is sleeved on the hollow sleeve shaft in a hollow mode and can selectively connect or disconnect the fifth parallel gear and the output gear;
and the sixth actuating mechanism is sleeved on the hollow sleeve shaft in a hollow mode and can selectively connect or disconnect the sixth parallel gear and the output gear.
2. The hybrid transmission of claim 1, wherein: the single planet row is embedded in the first parallel gear; the first parallel gear and the second parallel gear are sleeved on the planet carrier in a hollow mode.
3. The hybrid transmission of claim 1, wherein: the gearbox also comprises a differential mechanism used for connecting wheels, and the differential mechanism is meshed with the output gear; the differential is arranged in the box body.
4. The hybrid transmission of claim 1, wherein: the third parallel gear, the fourth parallel gear and the seventh parallel gear are all sleeved on the intermediate shaft in a hollow manner; the fifth parallel gear and the sixth parallel gear are sleeved on the hollow sleeve shaft in a hollow mode, and the fifth parallel gear and the sixth parallel gear are distributed on two sides of the output gear.
5. The hybrid transmission of claim 1, wherein: the first, second, third, fourth, fifth, sixth and seventh actuators are synchronizers or clutches.
6. The hybrid transmission of claim 1, wherein: the intermediate shaft, the sun wheel shaft and the hollow shaft are parallel to each other.
7. The hybrid transmission of claim 6, wherein: the intermediate shaft and the hollow shaft are distributed on two sides of the sun wheel shaft.
8. A hybrid drive system, comprising:
the hybrid transmission of any one of claims 1-7;
the engine is connected with a gear ring of the hybrid power gearbox;
and the motor is connected with the intermediate shaft of the hybrid power gearbox.
9. A hybrid drive system as defined in claim 8, wherein: and a torque limiting shock absorber is also arranged between the gear ring and the engine.
10. A vehicle characterized by comprising the hybrid drive system of any one of claims 8 to 9.
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