Planet row hybrid power system arrangement structure

Abstract

A planet row hybrid power system arrangement structure comprises a motor input shaft, an engine input shaft and a first-stage planet row, a planet carrier in the first-stage planet row is coaxially fixed to the engine input shaft, and the motor input shaft is connected with a sun gear in the first-stage planet row in a meshed mode through an intermediate transmission gear. A first fixed gear seat coaxially aligned with the sun gear is fixed to a gearbox shell, a combination gear assembly which is located between the sun gear and the first fixed gear seat and can slide in the axial direction is installed on an engine input shaft, a left hanger of the combination gear assembly is combined with the first fixed gear seat to lock the planet carrier, and a right hanger of the combination gear assembly is combined with the sun gear to connect the planet carrier and the sun gear into a whole. A second fixed tooth holder coaxially aligned with the middle transmission gear is fixed to the gearbox shell, a second combined gear sleeve is meshed with the second fixed tooth holder in a sliding mode, and a right hanger of the second combined gear sleeve is combined with the middle transmission gear to lock the sun gear. According to the utility model, the whole vehicle arrangement of the gearbox is facilitated, the oil consumption is reduced, the driving mode switching control process is simplified, and the manufacturing and maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of planetary row hybrid system arrangement structure, belong to hybrid transmission technical field. BACKGROUND

[0002] With the development of new energy vehicles, currently in commercial vehicle field, especially heavy commercial vehicle, hybrid power is mostly used

[0003] Transmission, compared with pure electric transmission, has greater endurance advantage.Present hybrid transmission mostly uses the transmission form of gear set, and hybrid planetary row is the main power driving source of hybrid transmission, planetary row is generally assembled with multiple gears, resulting in the overall setting of transmission structure is more complex, and it needs larger layout space, and vehicle layout is difficult;Hybrid transmission needs to set high-pressure oil pump to control clutch in oil circuit when working due to the complex structure of transmission mechanism and the components such as clutch, resulting in high manufacturing and maintenance cost, difficult control and high oil consumption, so that overall efficiency is not high, and energy loss is large. SUMMARY

[0004] The planetary row hybrid system arrangement structure provided by the utility model forms compact transmission arrangement structure, reduces the volume of transmission, is conducive to the vehicle layout of transmission, realizes the quick switching of driving mode by the sliding of combination tooth assembly and combination tooth sleeve two, simplifies the driving mode switching control process, reduces manufacturing and maintenance cost, ensures that engine runs in high-efficiency area as much as possible, and reduces oil consumption.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0006] The planetary row hybrid system arrangement structure is installed in transmission housing, including motor input shaft connected with motor, engine input shaft connected with engine and parallel with motor input shaft, primary planetary row output power through inner gear ring, planet carrier in primary planetary row is coaxially fixed with engine input shaft, characterized in that: motor input shaft is connected with sun gear in primary planetary row through intermediate transmission gear, fixed tooth seat one coaxially aligned with sun gear is fixed on transmission housing, combination tooth assembly, which is located between sun gear and fixed tooth seat one and can slide axially, is installed on engine input shaft, planet carrier is locked by combination tooth assembly left hanging and combination with fixed tooth seat one, and planet carrier and sun gear are connected as a whole by combination tooth assembly right hanging and combination with sun gear, fixed tooth seat two coaxially aligned with intermediate transmission gear is fixed on transmission housing, combination tooth sleeve two is slidably engaged on fixed tooth seat two, and sun gear is locked by combination tooth sleeve two right hanging and combination with intermediate transmission gear.

[0007] Preferably, the intermediate transmission gear is located between the motor input shaft and the engine input shaft, with its central axis parallel to the motor input shaft. The first-stage planetary gear set is coaxially arranged with the engine input shaft. The sun gear is fitted onto the engine input shaft with clearance. The planet carrier meshes with one end of the engine input shaft. The internal gear ring of the planetary gear set is coaxially connected to the gear ring output shaft, and the gear ring output shaft is equipped with an output gear.

[0008] Preferably, the gear ring output shaft is meshed with the internal gear ring and supported on the planetary carrier by bearings. The output gear meshes with the rear end of the gear ring output shaft and is axially positioned by the shaft shoulder and axial retaining ring on the gear ring output shaft.

[0009] Preferably, the intermediate transmission gear has a mating tooth portion coaxially aligned with the fixed gear seat two, and the mating tooth portion is located on the right side of the mating gear sleeve two.

[0010] Preferably, the engagement gear assembly includes an engagement gear seat meshing on the engine input shaft and a slidable engagement gear sleeve 1 meshing on the engagement gear seat. Both the fixed gear seat 1 and the sun gear have engagement teeth that can engage with the engagement gear sleeve 1. The engagement gear sleeve 1 engages with the fixed gear seat 1 on the left to lock the planet carrier, and engages with the sun gear on the right to connect the planet carrier and the sun gear into a whole. The engagement gear seat forms axial positioning through the shaft shoulder and axial retaining ring on the engine input shaft.

[0011] The beneficial effects of this utility model are:

[0012] The planetary gearbox hybrid system layout of this utility model features a parallel motor input shaft and an engine input shaft. The engine input shaft is fixed to the planetary carrier, and the motor input shaft is connected to the sun gear via an intermediate transmission gear. A coupling gear assembly is installed on the engine input shaft between the sun gear and a fixed gear seat. The axial sliding of the coupling gear assembly locks the planetary carrier or connects the planetary carrier and the sun gear as a whole. A coupling gear sleeve engages on a fixed gear seat on the gearbox housing. The axial sliding of the coupling gear sleeve locks or releases the sun gear, enabling power transmission for different drive modes. The engine input shaft is connected to the planetary carrier. The motor input shaft is connected to the sun gear, and the gear assembly is mounted on the engine input shaft. The fixed gear seat two is coaxially aligned with the intermediate transmission gear, forming a compact transmission layout structure, reducing the size of the gearbox and facilitating the overall vehicle layout of the gearbox. The sliding of the gear assembly and the gear sleeve two enables rapid switching of the drive mode, simplifying the drive mode switching control process, reducing manufacturing and maintenance costs. During the process from vehicle start-up to acceleration, a drive process is formed, including pure electric drive, motor-split engine start, engine direct drive high-speed cruising, and motor-engine combined drive, ensuring that the engine operates in the most efficient range as much as possible and reducing fuel consumption. Attached Figure Description

[0013] Figure 1A schematic view of the planetary hybrid power system arrangement in the specific embodiment. DETAILED DESCRIPTION

[0014] The embodiments of the utility model will be explained in detail below. Figure 1 The embodiments of the utility model will be explained in detail below.

[0015] The planetary hybrid power system arrangement is installed in the gearbox housing and comprises a motor input shaft 1 connected with a motor, an engine input shaft 2 connected with an engine and parallel to the motor input shaft 1, a primary planetary gear set 3 outputting power through an inner ring gear, and a planet carrier 4 in the primary planetary gear set 3 coaxially fixed with the engine input shaft 2, characterized in that the motor input shaft 1 is connected with a sun gear 6 in the primary planetary gear set 3 through an intermediate transmission gear 5, the gearbox housing is fixed with a fixed gear seat 7 coaxially aligned with the sun gear 6, the engine input shaft 2 is provided with a combination gear assembly 8 axially slidable and located between the sun gear 6 and the fixed gear seat 7, the combination gear assembly 8 is connected with the fixed gear seat 7 on the left to lock the planet carrier 4, and connected with the sun gear 6 on the right to connect the planet carrier 4 and the sun gear 6 into a whole, the gearbox housing is fixed with a fixed gear seat 9 coaxially aligned with the intermediate transmission gear 5, and the fixed gear seat 9 is slidably connected with a combination gear sleeve 10, and the combination gear sleeve 10 is connected with the intermediate transmission gear 5 on the right to lock the sun gear 6.

[0016] The planetary hybrid power system arrangement described above has the motor input shaft 1 and the engine input shaft 2 parallel, the engine input shaft 2 fixed with the planet carrier 4, the motor input shaft 1 connected with the sun gear 6 through the intermediate transmission gear 5, the combination gear assembly 8 installed on the engine input shaft 2 and located between the sun gear 6 and the fixed gear seat 7, the planet carrier 4 locked or connected with the sun gear 6 into a whole through the axial sliding of the combination gear assembly 8, the combination gear sleeve 10 connected with the fixed gear seat 9 on the gearbox housing, the sun gear 6 locked or unlocked through the axial sliding of the combination gear sleeve 10, the power transmission in different driving modes realized, the engine input shaft 2 connected with the planet carrier 4, the motor input shaft 1 connected with the sun gear 6, the combination gear assembly 8 installed on the engine input shaft 2, the fixed gear seat 9 coaxially aligned with the intermediate transmission gear 5, a compact transmission arrangement formed, the volume of the gearbox reduced, the whole vehicle arrangement of the gearbox facilitated, the driving modes quickly switched through the sliding of the combination gear assembly 8 and the combination gear sleeve 10, the driving mode switching control process simplified, the manufacturing and maintenance costs reduced, the driving process of pure electric driving, motor split-flow starting engine, engine direct-drive high-speed cruising, and motor and engine combined-flow co-driving formed in the process of vehicle starting to increasing speed, the engine ensured to run in the high-efficiency region as much as possible, and the fuel consumption reduced.

[0017] The intermediate transmission gear 5 is arranged between the motor input shaft 1 and the engine input shaft 2 and the axis is parallel to the motor input shaft 1, the primary planetary gear set 3 is coaxially arranged with the engine input shaft 2, the sun gear 6 is gap-fitted on the engine input shaft 2, the planetary carrier 4 is engaged on one end of the engine input shaft 2, the inner ring gear 11 of the planetary gear set 3 is coaxially connected with the ring gear output shaft 12, and the output gear 13 is arranged on the ring gear output shaft 12. The intermediate transmission gear 5 is engaged between the motor input shaft 1 and the sun gear, and the connection of the motor input shaft 1 and the sun gear 6 is formed. When the right hanging of the second tooth sleeve 10 is combined with the fixed tooth seat 9, the intermediate transmission gear 5 is connected with the fixed tooth seat 9 and is locked and cannot rotate, thereby forming the locking of the sun gear 6. The primary planetary gear set includes the sun gear 6, the planet gears engaged with the sun gear 6, the planetary carrier 4 connected with the planet gears, and the inner ring gear 11 engaged with the planet gears. The power of the primary planetary gear set is output by the inner ring gear 11, the ring gear output shaft 12 is connected on the inner ring gear 11, and the output gear 13 is arranged on the ring gear output shaft 12 for outputting power.

[0018] The ring gear output shaft 12 is engaged with the inner ring gear 11 and is supported on the planetary carrier 4 through a bearing, the output gear 13 is engaged with the rear end of the ring gear output shaft 12 and is axially positioned through the shaft shoulder and the axial stop ring on the ring gear output shaft 12. The ring gear output shaft 12 is engaged with the inner ring gear 11 to transmit power and is supported on the planetary carrier 4 through a bearing, and the output gear 13 is positioned on the ring gear output shaft 12 and moves synchronously with the ring gear output shaft 12. The assembly structure of the ring gear output shaft 12 and the output gear 13 is simple, and the output end structure coaxially aligned with the engine input shaft 2 is formed, thereby improving the compactness of the structure.

[0019] The intermediate transmission gear 5 has a combined tooth part 51 coaxially aligned with the fixed tooth seat 9, and the combined tooth part 51 is located on the right side of the second tooth sleeve 10. The initial position of the second tooth sleeve 10 is engaged on the fixed tooth seat 9 and is separated from the combined tooth part 51, and does not form locking for the rotation of the intermediate transmission gear 5. When the sun gear 6 needs to be locked, the right hanging of the second tooth sleeve 10 is combined with the combined tooth part 51, the intermediate transmission gear 5 is combined with the fixed tooth seat 9, and the rotation locking is formed to realize the locking of the sun gear 6.

[0020] The combination tooth assembly 8 comprises a combination tooth seat 81 engaged on the engine input shaft 2 and a combination tooth sleeve I 82 slidably engaged on the combination tooth seat 81, the fixed tooth seat I 7 and the sun gear 6 each have combination teeth engageable with the combination tooth sleeve I 82, the combination tooth sleeve I 82 is left-hung to be combined with the fixed tooth seat I 7 to lock the planet carrier 4, and right-hung to be combined with the sun gear 6 to combine the planet carrier 4 with the sun gear 6 as a whole, and the combination tooth seat 81 is axially positioned by the shaft shoulder and the axial stop ring on the engine input shaft 2. The combination tooth seat 81 is axially positioned on the engine input shaft 2 to ensure that it does not move axially synchronously with the combination tooth sleeve I 82, the initial position of the combination tooth sleeve I 82 is the neutral position, and it is not combined with the sun gear 6 and the fixed tooth seat I 7, when the combination tooth sleeve I 82 is right-hung to be combined with the sun gear 6, the sun gear 6, the combination tooth sleeve I 82, the combination tooth seat 81, the engine input shaft 2 and the planet carrier 4 rotate coaxially, which is equivalent to combining the sun gear 6 and the planet carrier 4 as a whole, and when the combination tooth sleeve I 81 is left-hung to be combined with the fixed tooth seat I 7, the combination tooth sleeve I 81 cannot rotate, so that the combination tooth seat 81, the engine input shaft 2 and the planet carrier 4 cannot rotate, which is equivalent to locking the planet carrier 4.

[0021] The planetary row hybrid system arrangement structure has the following driving modes:

[0022] Pure electric mode: the combination tooth sleeve I 82 is left-hung to be combined with the fixed tooth seat I 7 to lock the planet carrier, and the combination tooth sleeve II 10 is in the initial position, the power of the motor is input from the motor input shaft 1 to the sun gear 4 through the intermediate transmission gear 5, and transmitted to the gear output shaft 12 and the output gear 13 through the inner ring gear 11, forming power output.

[0023] Motor split-flow starting engine mode: in the pure electric mode, the combination tooth sleeve I 82 is right-hung to be combined with the sun gear 5 to combine the sun gear 6 and the planet carrier 4 as a whole, so that the power of the motor is split to the engine input shaft 2 through the planet carrier 4, thereby starting the engine.

[0024] Engine direct drive high-speed cruise mode: the motor stops working, the combination tooth sleeve II 10 is right-hung to be combined with the intermediate transmission gear 5 to lock the sun gear; at the same time, the combination tooth sleeve I 82 is hung to the neutral position, the power of the engine is transmitted to the planet carrier 4 through the engine input shaft 2, and transmitted to the gear output shaft 12 and the output gear 13 through the inner ring gear 11, forming power output.

[0025] Motor and engine confluence co-driving mode: in the engine direct drive high-speed cruise mode, the combination tooth sleeve II 10 is left-hung to return to the initial position to separate the intermediate transmission gear 5 from the fixed tooth seat II 9, and the motor is started, at the same time, the combination tooth sleeve I 82 is right-hung to be combined with the sun gear 6 to combine the sun gear 6 and the planet carrier 4 as a whole, so that the motor and the engine output power together.

[0026] Energy recovery mode: hybrid system reverse drive, reverse driving force is transmitted to planetary gear set 3 by output gear 13, engine power is disconnected, locking planet carrier 4, combined sleeve 82 left hanging and fixed tooth seat 1, 7; At this time, combined sleeve 2 10 is in the initial position and disconnected from intermediate transmission gear 5, the power transmitted to planetary gear set 3 is transmitted to intermediate transmission gear 5 by sun gear 6, and finally to motor input shaft 1 to drive the motor to generate electricity.

[0027] Power generation mode: at this time, the output gear 13 is disconnected from the vehicle transmission, the combined sleeve 2 10 is in the initial position and disconnected from the intermediate transmission gear 5; At the same time, the combined sleeve 1 82 right hangs and the sun gear 5 is combined, the sun gear 6 and the planet carrier 4 are connected as a whole, the engine power is input through the engine input shaft 2, and is transmitted to the intermediate transmission gear 5 by the sun gear 5, and finally to the motor input shaft 1 to drive the motor to generate electricity.

[0028] The technical solutions of the embodiments of the utility model are completely described above in combination with the drawings, and it should be noted that the described embodiments are only a part of the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

Claims

1. A planetary hybrid powertrain arrangement housed in a transmission housing, comprising a motor input shaft connected to an electric motor, an engine input shaft connected to an engine and parallel to the motor input shaft, a first planetary set outputting power through an inner ring, a carrier of the first planetary set being coaxially fixed to the engine input shaft, characterized in that: The motor input shaft is connected with the sun gear of the first planetary gear set through the intermediate transmission gear, the fixed gear seat one coaxial with the sun gear is fixed on the transmission case, the combination gear assembly is mounted on the engine input shaft and is axially slidable between the sun gear and the fixed gear seat one, the left hook of the combination gear assembly is combined with the fixed gear seat one to lock the planet carrier, the right hook of the combination gear assembly is combined with the sun gear to connect the planet carrier and the sun gear as a whole, the fixed gear seat two coaxial with the intermediate transmission gear is fixed on the transmission case, the combination gear sleeve two is slidably engaged on the fixed gear seat two, and the right hook of the combination gear sleeve two is combined with the intermediate transmission gear to lock the sun gear.

2. Planetary row mix powertrain arrangement according to claim 1, characterized in that The intermediate transmission gear is arranged between the motor input shaft and the engine input shaft and has an axis parallel to the motor input shaft, the first planetary gear set is coaxially arranged with the engine input shaft, the sun gear is gap-fitted on the engine input shaft, the planet carrier is engaged on one end of the engine input shaft, the inner ring gear of the planetary gear set is coaxially connected with the ring gear output shaft, and the output gear is mounted on the ring gear output shaft.

3. Planetary row mix powertrain arrangement according to claim 2, characterized in that: The ring gear output shaft is engaged with the inner ring gear and is supported on the planet carrier through a bearing, and the output gear is engaged on the rear end of the ring gear output shaft and is axially positioned through the shaft shoulder and the axial stop ring on the ring gear output shaft.

4. Planetary row mix powertrain arrangement according to claim 1, characterized in that: The intermediate transmission gear has the combination gear part coaxial with the fixed gear seat two, and the combination gear part is located on the right side of the combination gear sleeve two.

5. The planetary row mix powertrain arrangement of claim 1, wherein: The combination gear assembly comprises the combination gear seat engaged on the engine input shaft and the combination gear sleeve one slidably engaged on the combination gear seat, the combination gear sleeve one has the combination gears on the left hook and the right hook, the left hook of the combination gear sleeve one is combined with the fixed gear seat one to lock the planet carrier, and the right hook of the combination gear sleeve one is combined with the sun gear to connect the planet carrier and the sun gear as a whole, and the combination gear seat is axially positioned through the shaft shoulder and the axial stop ring on the engine input shaft. The combination gear assembly comprises the combination gear seat engaged on the engine input shaft and the combination gear sleeve one slidably engaged on the combination gear seat, the combination gear sleeve one has the combination gears on the left hook and the right hook, the left hook of the combination gear sleeve one is combined with the fixed gear seat one to lock the planet carrier, and the right hook of the combination gear sleeve one is combined with the sun gear to connect the planet carrier and the sun gear as a whole, and the combination gear seat is axially positioned through the shaft shoulder and the axial stop ring on the engine input shaft.

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