CN203142374U - Transmission of HEV (hybrid electric vehicle) - Google Patents

Abstract

The utility model relates to a transmission of an HEV, which is used for solving power distribution and transmission problems of a vehicle hybrid power source. The transmission comprises an engine driving mechanism, a motor driving mechanism and a transmission output shaft, and an engine driving moment output gear of the engine driving mechanism and a motor driving moment output gear of the motor driving mechanism are meshed with a transmission output shaft transmission gear respectively. The transmission of the HEV is characterized in that the motor driving mechanism is arranged on one side of the transmission output shaft and further comprises a battery pack, a motor component, a motor drive shift actuator, a motor drive planetary gear train and an electronic oil pump, the battery pack is matched with the motor component, the motor component is assembled with the motor drive planetary gear train, the motor drive planetary gear train is assembled with the transmission output shaft, and the electronic oil pump is connected in a transmission oil line. The transmission of the HEV is compact in structure, the arrangement of the whole vehicle is facilitated, and at the same time, the power performance and the economic performance of the vehicle are improved.

Description

A hybrid vehicle transmission

technical field

The utility model relates to an automobile speed changer, in particular to a speed changer for a hybrid drive vehicle, which belongs to the technical field of vehicle transmission devices. the

Background technique

With the depletion of petroleum resources and the increasing pressure of environmental protection, safety, energy saving and environmental protection have become the themes of today's automobile development, and various hybrid models have appeared on the market one after another. At present, the power source of a hybrid vehicle is generally an internal combustion engine and an electric motor. The driving force is generated through the optimal combination of the two power sources in different situations, and then the power coupling system realizes a reasonable power distribution between the two power sources and transmits the power. For the drive axle, not only the dynamic performance of the vehicle is fully guaranteed, but also the fuel consumption rate and emission performance are greatly improved. the

Since most hybrid electric vehicle models achieve the hybrid drive function by modifying the existing vehicle structure and adding motors and related components to its power system, it is necessary to carry out a comprehensive design of the transmission structure with power coupling function, which will not only cost less High, and after the modification, the shape of the transmission is complicated and the volume is large, which is not conducive to the layout of the whole vehicle. the

Utility model content

The purpose of the utility model is to aim at the disadvantages of the prior art, and provide a transmission for a hybrid electric vehicle which has little modification to the structure of the original transmission, is beneficial to the overall vehicle layout, and can effectively improve the dynamic performance and economic performance of the vehicle. the

Problem described in the utility model is realized with following technical scheme:

A hybrid vehicle transmission, which includes an engine drive mechanism, a motor drive mechanism and a transmission output shaft, the engine drive torque output gear of the engine drive mechanism, and the motor drive torque output gear of the motor drive mechanism are respectively meshed with the transmission output shaft transmission gear , which is special in that: the motor drive mechanism is arranged on the side of the transmission output shaft, and it also includes a battery pack, a motor assembly, a motor-driven shift actuator, a motor-driven planetary gear train and an electronic oil pump, and the battery pack and The motor assembly is matched, the motor assembly is assembled with the motor-driven planetary gear train, the motor-driven planetary gear train is assembled with the transmission output shaft, and the electronic oil pump is connected with the transmission valve body.

In the above hybrid vehicle transmission, the motor-driven shift actuator includes a motor-driven mechanism clutch and a motor-driven mechanism brake, both of which are matched with corresponding elements of the motor-driven planetary gear mechanism. the

The above-mentioned hybrid vehicle transmission, the motor-driven planetary gear system is a single-row planetary gear system, which includes a motor-driven planetary gear system sun gear, a motor-driven planetary gear system planetary gear and a motor-driven planetary gear system ring gear, and the motor drives The sun gear of the planetary gear system is connected with the output shaft of the motor, and the planetary gear carrier of the planetary gear of the planetary gear system driven by the motor is connected with the output gear shaft of the motor driving torque. the

The above-mentioned hybrid vehicle transmission, the engine drive mechanism also includes an engine drive torque input shaft, a torque converter, an engine drive planetary gear train and an engine drive shift control unit, and the torque converter turbine and the engine drive torque The input shaft is connected by a spline, and the engine drive torque input shaft is matched with the engine drive planetary gear train, and the engine drive planetary gear train is fitted with the engine drive shift control unit. the

Above-mentioned hybrid car transmission, described engine drive planetary gear train is Ravina type planetary gear train, and it comprises front sun gear, short planet gear, long planet gear, planetary ring gear and rear sun gear, described front sun gear and The short planetary gear is meshed with one end of the long planetary wheel, and the other end of the long planetary wheel is meshed with the rear sun gear. The long planetary wheel and the short planetary wheel are connected through the planetary gear carrier, and the long planetary wheel is also connected with the planetary gear The planetary ring gear is meshed with the engine drive torque output gear. the

In the hybrid vehicle transmission described above, the engine-driven shift control unit includes a first clutch, a second clutch, a third clutch, a one-way clutch, a first brake, and a second brake, and the first clutch is installed at the engine drive torque input shaft and the planetary carrier, the second clutch is installed between the engine drive torque input shaft and the front sun gear, the third clutch is installed between the engine drive torque input shaft and the rear sun gear, and the one-way The clutch is installed between the first brake and the planetary wheel carrier, and the second brake is fitted with the rear sun gear. the

The utility model adds a motor drive mechanism composed of a battery pack, a motor assembly, a motor-driven shift actuator, a motor-driven planetary gear train and an electronic oil pump on the basis of the existing 4AT structure; the motor drive mechanism is arranged on the output shaft On one side, it transmits the power to the transmission output shaft through the engagement of the motor driving force output gear and the transmission output shaft transmission gear, because it will not increase the axial length of the transmission, which is convenient for the layout of the whole vehicle; each gear of the utility model is composed of Controlled by three control elements, the shifting process of most gears can be completed only by the action of two control elements, which ensures the smoothness of the shifting process; the utility model adds a motor auxiliary power source, when the engine power source is running When it is not good, it is driven by the motor power source, which improves the fuel economy of the vehicle; the utility model adds a motor assembly and a battery pack, wherein the motor assembly includes a motor and a motor controller, and the motor controller controls the speed and steering of the motor And the realization of the power generation function, when the vehicle brakes, the motor can be controlled to invert into a generator to realize the recovery of braking energy; the utility model can also realize the simultaneous output torque of the engine drive mechanism and the motor drive mechanism, thereby realizing the acceleration and torque increase function , to match models with higher torque requirements and improve the general performance of the transmission. In a word, the utility model makes little changes to the original transmission structure, has a compact structure, is beneficial to the arrangement of the whole vehicle, and improves the dynamic performance and economic performance of the vehicle at the same time. the

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described. the

Fig. 1 is a structural representation of the utility model;

Figure 2 is a power transmission route diagram of D1 gear driven by the engine or jointly driven by the engine and the motor;

Fig. 3 is a power transmission roadmap of the D2 gear driven by the engine or jointly driven by the engine and the motor;

Fig. 4 is the power transmission roadmap of the D3 gear driven by the engine or jointly driven by the engine and the motor;

Fig. 5 is a road map of D4 gear power transmission driven by the engine or jointly driven by the engine and the motor;

Figure 6 is a power transmission roadmap of REV gear driven by the engine or jointly driven by the engine and the motor;

Fig. 7 is a schematic diagram of the power transmission route of D1 gear or REV gear driven by the motor;

Fig. 8 is a schematic diagram of the power transmission route of the D2 gear driven by the motor.

The list of labels in the figure is: 1. Hydraulic torque converter, 2. Engine drive torque input shaft, 3. Engine drive torque output gear, 4. Front sun gear, 5. Short planetary gear, 6. Planetary ring gear, 7 . Long planetary gear, 8. Rear sun gear, 9. Electronic oil pump, 10. Motor assembly, 11. Motor-driven planetary gear system sun gear, 12. Motor-driven planetary gear system planetary gear, 13. Motor-driven planetary gear system ring gear , 14, motor drive torque output gear, 15, differential, 16, transmission output shaft transmission gear, 17, transmission output shaft, 18, transmission output gear;

C1, the first clutch, C2, the second clutch, C3, the third clutch, C4, the motor drive mechanism clutch, B1, the first brake, B2, the second brake, B3 motor drive mechanism brake, F, one-way clutch.

Detailed ways

Referring to Fig. 1, the utility model comprises an engine drive mechanism, a motor drive mechanism and a transmission output shaft 17, the engine drive torque output gear 3 of the engine drive mechanism meshes with the transmission output shaft transmission gear 18, and the motor drive of the motor drive mechanism The torque output gear 14 is engaged with the transmission output shaft transmission gear 18, and the motor drive mechanism is arranged on one side of the transmission output shaft 17, and it also includes a battery pack, a motor assembly 10, a motor-driven shift actuator, a motor-driven planetary gear train and An electronic oil pump 9, the battery pack is matched with a motor assembly 10, the motor assembly 10 includes a motor and a motor controller, the motor assembly 10 is fitted with a motor-driven planetary gear train, and the motor-driven planetary gear train and a transmission output shaft 17 Assembled, the electronic oil pump 9 is connected with the transmission valve body, and realizes its functions of lubricating and providing pressure through the control of the transmission valve body. the

Referring to Figure 2, the power transmission route of the D1 gear driven by the engine or jointly driven by the engine and the motor is: when the engine is driven independently, the second clutch C2 and the one-way clutch F are combined. At this time, the planetary carrier is fixed, and the power is transmitted from the engine. The pump wheel of the hydraulic torque converter is transmitted to the turbine by the pump wheel through hydraulic force, and the turbine is transmitted to the engine drive torque input shaft 2 through the spline, and then transmitted to the front sun gear 4 by the second clutch C2, and the front sun gear 4 Transmission to short planetary gear 5, short planetary gear 5 to long planetary gear 7, long planetary gear 7 to planetary gear 6, planetary gear 6 to engine drive torque output gear 3, through transmission output shaft 17 and differential Device 15 transmits power to the half shaft. During the above-mentioned power transmission process, the rear sun gear 8 rotates freely and does not transmit torque. When the motor 10 is needed to assist: the motor-driven brake B3 is combined, and now the motor-driven planetary gear ring gear 13 is fixed, and the motor driving force passes through the motor-driven planetary gear system sun gear 11, the motor-driven planetary gear system planetary gear 12 and the planet carrier, The motor drives the torque output gear 14, the transmission output shaft 17 and the differential gear 15, and finally the power is transmitted to the half shaft. the

Referring to Figure 3, the power transmission route of the D2 gear driven by the engine or jointly driven by the engine and the motor is: when the engine is driven independently, the second clutch C2 and the second brake B2 are combined. At this time, the rear sun gear 8 is fixed, and the power is provided by the engine. It is transmitted to the pump wheel of the hydraulic torque converter, and then transmitted to the turbine by the pump wheel through hydraulic force, and the turbine is transmitted to the engine drive torque input shaft 2 through the spline, and then transmitted to the front sun gear 4 by the second clutch C2, the front sun gear The wheel 4 is transmitted to the short planetary gear 5, the short planetary gear 5 is transmitted to the long planetary gear 7, the long planetary gear 7 is transmitted to the planetary gear 6, and the planetary gear 6 is transmitted to the engine drive torque output gear 3, through the transmission output shaft 17 and The differential 15 transfers power to the half shafts. When motor power is needed: the motor drive mechanism brake B3 is combined, and now the motor-driven planetary gear ring gear 13 is fixed, and the motor driving force passes through the motor-driven planetary gear system sun gear 11, the motor-driven planetary gear system planetary gear 12 and the planet carrier, The motor drives the torque output gear 14, the transmission output shaft 17 and the differential gear 15, and finally the power is transmitted to the half shaft. the

Referring to Figure 4, the power transmission route of the D3 gear driven by the engine or jointly driven by the engine and the motor is: when the engine is driven independently, the first clutch C1 and the second clutch C2 are combined, the engine drives the planetary gear system to rotate as a whole, and the power is driven by The engine transmits to the pump wheel of the hydraulic torque converter, the pump wheel transmits to the turbine through hydraulic force, the turbine transmits the driving torque input shaft 2 of the engine through the spline, and then transmits it to the front sun gear 4 by the second clutch C2, and the first clutch C1 is transmitted to the planetary carrier, at this time the planetary carrier rotates as a whole, the power is transmitted to the planetary ring gear 6 through the long planetary gear 7, and the planetary gear 6 is transmitted to the engine driving torque output gear 3, and the output shaft 17 of the transmission and the differential gear 15 will transmit the power to the planetary carrier. The power is transmitted to the half shaft. During the above-mentioned power transmission process, the rear sun gear 8 rotates freely and does not transmit torque. When motor assistance is needed: the clutch C4 of the motor drive mechanism is combined, and the planetary carrier rotates as a whole at this time, and the motor driving force drives the sun gear 11 of the planetary gear system through the motor, the planetary gear 12 of the planetary gear system and the planetary carrier driven by the motor, and the torque output gear driven by the motor 14. Transmission output shaft 17 and differential gear 15 finally transmit power to the half shaft. the

Referring to Figure 5, the power transmission route of D4 gear driven by the engine or jointly driven by the engine and the motor is: when the engine is driven independently, the first clutch C1 and the second brake B2 are combined, the rear sun gear 8 is fixed, the planet carrier rotates, and the power is provided by The engine transmits to the pump wheel of the hydraulic torque converter, the pump wheel transmits to the turbine through hydraulic force, the turbine transmits the driving torque input shaft 2 of the engine through the spline, and then transmits it to the planetary carrier through the first clutch C1. At this time, the planetary carrier as a whole Can rotate, and power is passed to planetary ring gear 6 through long planetary gear 7, and planetary ring gear 6 is passed to engine drive moment output gear 3, by transmission output shaft 17 and differential gear 15, power is passed on the axle shaft. During the above-mentioned power transmission process, the front sun gear 4 rotates freely and does not transmit torque. When motor assistance is needed: the clutch C4 of the motor drive mechanism is combined, and the planetary carrier rotates as a whole at this time, and the motor driving force drives the sun gear 11 of the planetary gear system through the motor, the planetary gear 12 of the planetary gear system and the planetary carrier driven by the motor, and the torque output gear driven by the motor 14. Transmission output shaft 17 and differential gear 15 finally transmit power to the half shaft. the

Referring to Figure 6, the power transmission route of the REV gear driven by the engine or jointly driven by the engine and the motor is: when the engine is driven independently, the third clutch C3 and the first brake B1 are combined, the planet carrier is fixed, and the power is transmitted from the engine to the hydraulic transformer. The pump wheel of the torque converter, the pump wheel is transmitted to the turbine through the hydraulic force, and the turbine is transmitted to the input shaft through the spline; and then transmitted to the rear sun gear 8 through the third clutch C3. At this time, the planet carrier is fixed, and the power passes through the rear sun gear 8, The long planetary gear 7 passes to the planetary ring gear 6, and the planetary ring gear 6 passes to the engine drive torque output gear 3, and the power is transmitted to the half shaft through the transmission output shaft 17 and the differential 15. During the above-mentioned power transmission process, the front sun gear 4 rotates freely and does not transmit torque. When motor power is needed: the motor drive mechanism brake B3 is combined, and now the motor-driven planetary gear ring gear 13 is fixed, and the motor driving force passes through the motor-driven planetary gear system sun gear 11, the motor-driven planetary gear system planetary gear 12 and the planet carrier, The motor drives the torque output gear 14, the transmission output shaft 17 and the differential gear 15, and finally the power is transmitted to the half shaft. the

Referring to Figure 7, the power transmission route of D1 gear or REV gear driven by the motor (controlling the reverse rotation of the motor) is: the motor drive mechanism brake B3 is combined, at this time the motor drives the planetary gear ring gear 13 to be fixed, and the motor driving force is driven by the motor The planetary gear system sun gear 11, the motor-driven planetary gear system planetary gear 12 and the planet carrier, the motor-driven torque output gear 14, the transmission output shaft 17 and the differential gear 15 finally transmit power to the half shaft. At this time, the electronic oil pump 9 works, and provides lubricating oil, clutch and piston working pressure oil to the transmission through the transmission valve body. the

Referring to Fig. 8, the power transmission route of the D2 gear driven by the motor is: the motor-driven clutch C4 is combined, and at this time the planetary carrier rotates as a whole, and the motor driving force passes through the motor-driven planetary gear system sun gear 11, the motor-driven planetary gear system planetary gear 12 and The planetary carrier, the motor drive torque output gear 14, the transmission output shaft 17 and the differential 15 finally transmit the power to the half shaft. At this time, the electronic oil pump 9 works, and provides lubricating oil, clutch and piston working pressure oil to the transmission through the transmission valve body. the

Claims (6)

1. hybrid-powered motor speed variator, it comprises engine drive mechanism, motor-driven mechanism and transmission output shaft (17), the engine driving torque output gear (3) of described engine drive mechanism, the motor-driven moment output gear (14) of motor-driven mechanism meshes with transmission output shaft transmission gear (18) respectively, it is characterized in that, described motor-driven mechanism is arranged in transmission output shaft (17) one sides, it also comprises battery pack, electric machine assembly (10), motor-driven gearshift power element, motor-driven planet circular system and electronics oil pump (9), described battery pack and electric machine assembly (10) coupling, described electric machine assembly (10) is equipped with the motor-driven planet circular system, described motor-driven planet circular system and transmission output shaft (17) are equipped, and described electronics oil pump (9) is connected with the change-speed box valve body.

2. a kind of hybrid-powered motor speed variator according to claim 1, it is characterized in that, described motor-driven gearshift power element comprises motor-driven mechanism power-transfer clutch (C4) and motor-driven mechanism drg (B3), and they all mate with motor-driven sun and planet gear counter element.

3. a kind of hybrid-powered motor speed variator according to claim 1 and 2, it is characterized in that, described motor-driven planet circular system is single planet circular system, it comprises motor-driven planet circular system sun wheel (11), motor-driven planet circular system satellite gear (12) and motor-driven planet circular system gear ring (13), described motor-driven planet circular system sun wheel (11) connects with the output shaft of motor (10), and the planetary wheel carrier of described motor-driven planet circular system satellite gear (12) connects with motor-driven moment output gear (14) axle.

4. a kind of hybrid-powered motor speed variator according to claim 3, it is characterized in that, described engine drive mechanism also comprises engine driving torque input shaft (2), turbine transformer (1), engine drive planet circular system and engine drive gearshift control unit, the turbine of described turbine transformer (1) and engine driving torque input shaft (2) pass through splined, described engine driving torque input shaft (2) and engine drive planet circular system coupling, described engine drive planet circular system and engine drive gearshift control unit are equipped.

5. a kind of hybrid-powered motor speed variator according to claim 4, it is characterized in that, described engine drive planet circular system is double planet circular system, it comprises preceding sun wheel (4), short satellite gear (5), long satellite gear (7), planetary ring gear (6) and rear sun gear (8), sun wheel (4) and short satellite gear (5) engagement before described, described short satellite gear (5) and long satellite gear (7) one ends engagement, described long satellite gear (7) other end and rear sun gear (8) engagement, long satellite gear (7) is connected by planetary wheel carrier with short satellite gear (5), long satellite gear (7) also with in the planetary ring gear (6) meshes, and described planetary ring gear (6) connects with engine driving torque output gear (3).

6. according to claim 4 or 5 described a kind of hybrid-powered motor speed variators, it is characterized in that, described engine drive gearshift control unit comprises first clutch (C1), second clutch (C2), three-clutch (C3), free-wheel clutch (F), first drg (B1) and second drg (B2), described first clutch (C1) is installed between engine driving torque input shaft (2) and the planetary wheel carrier, described second clutch (C2) is installed between engine driving torque input shaft (2) and the preceding sun wheel (4), described three-clutch (C3) is installed between engine driving torque input shaft (2) and the rear sun gear (8), described free-wheel clutch (F) is installed between first drg (B1) and the planetary wheel carrier, and described second drg (B2) is equipped with rear sun gear (8).

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