A hybrid transmission assembly, a hybrid electric drive system, and a vehicle

Abstract

The application discloses a hybrid power transmission mechanism assembly, a hybrid power electric drive system and a vehicle, and solves the technical problem of complex structure of a current multi-gear hybrid power system. The hybrid power transmission mechanism assembly comprises an engine input shaft assembly, a generator, an ICE intermediate shaft assembly, a differential shaft assembly, an EV intermediate shaft assembly, a drive motor input shaft assembly and a drive motor. The hybrid power transmission mechanism assembly provided by the application can reduce the overall size in each direction through the position design of the internal assembly, and the engine input shaft assembly is provided with an inner ring gear shaft, so that the planetary gear train function, the actuator installation, the gear installation and the necessary axial limiting function can be integrated at the same time, thereby greatly improving the integration degree of the hybrid power transmission mechanism assembly, reducing the functional volume of the hybrid power transmission mechanism assembly in the axial direction, and making the hybrid power transmission mechanism assembly have more flexible arrangement and mounting performance.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hybrid transmission, and particularly relates to a hybrid transmission mechanism assembly, a hybrid electric drive system and a vehicle. BACKGROUND

[0002] With the increasing awareness of energy saving and environmental protection in today's society, new energy vehicle technology has developed rapidly. Hybrid vehicle drive technology is the core stage of the development process of new energy vehicles. Improving fuel economy and reducing emissions are important issues faced by hybrid technology. At present, the mainstream hybrid electric drive products on the market are mostly double-motor single-gear hybrids, which can realize pure electric, series / stop power generation and parallel / engine direct drive working modes, and are suitable for HEV and PHEV models. With the tightening of fuel consumption and emission regulations, multi-gear hybrid engines have become a development trend. Due to the increase in the number of gears, the structure of the entire power transmission device becomes complex, the system structure becomes large, and the overall axial size also increases. SUMMARY

[0003] To solve the above technical problems, the application provides a hybrid transmission mechanism assembly, a hybrid electric drive system and a vehicle, which can reduce the volume of the assembly, improve the mounting performance and meet more flexible arrangement modes.

[0004] The technical scheme adopted to achieve the purpose of the application is a hybrid transmission mechanism assembly, comprising a transmission-connected engine input shaft assembly, a generator, an ICE intermediate shaft assembly, a differential shaft assembly, an EV intermediate shaft assembly, a drive motor input shaft assembly and a drive motor; wherein the engine input shaft assembly is coaxially arranged with the generator, and the drive motor input shaft assembly is coaxially arranged with the drive motor; the generator and the drive motor are located on the same side; the mounting height of the engine input shaft assembly is located between the drive motor and the differential shaft assembly, and the projection of the engine input shaft assembly on the vertical plane overlaps with the projection of the drive motor and the differential shaft assembly on the vertical plane.

[0005] The engine input shaft assembly comprises a planetary gear set, at least one actuator, at least one support bearing, at least one gear and an inner ring gear shaft; the inner ring gear shaft is sleeved outside the planetary gear set, and the inner ring gear shaft is in transmission connection with the inner ring gear of the planetary gear set; the at least one actuator, the at least one support bearing and the at least one gear are arranged on the inner ring gear shaft.

[0006] In some embodiments, the shaft center of the EV intermediate shaft assembly is located in a triangular region surrounded by the shaft centers of the engine input shaft assembly, the drive motor and the differential shaft assembly; the shaft center of the ICE intermediate shaft assembly has the lowest height.

[0007] In some embodiments, the EV intermediate shaft assembly includes an EV intermediate shaft and a first EV intermediate gear and a second EV intermediate gear mounted on the EV intermediate shaft, the EV intermediate shaft assembly is drivingly connected with the engine input shaft assembly and the drive motor input shaft assembly through the first EV intermediate gear, and the EV intermediate shaft assembly is drivingly connected with the differential shaft assembly through the second EV intermediate gear.

[0008] In some embodiments, the ICE intermediate shaft assembly includes an ICE intermediate shaft and a first ICE intermediate gear and a second ICE intermediate gear mounted on the ICE intermediate shaft, the ICE intermediate shaft assembly is drivingly connected with the engine input shaft assembly through the first ICE intermediate gear, and the ICE intermediate shaft assembly is drivingly connected with the differential shaft assembly through the second ICE intermediate gear.

[0009] In some embodiments, the inner ring shaft is mounted through a support bearing; the inner ring shaft includes:

[0010] a sleeve part for sleeving on a sun gear shaft or a planet carrier shaft of the planetary gear set, the sleeve part being provided with at least one first mounting position for mounting the actuator;

[0011] a cover part connected to the sleeve part and drivingly connected with an inner ring of the planetary gear set;

[0012] wherein the cover part and / or the sleeve part is provided with at least one assembly position for assembling the support bearing; and the cover part and / or the sleeve part is provided with at least one second mounting position for mounting the shift gear.

[0013] In some embodiments, the cover part includes a gear sleeve part and a baffle part, an inner ring of the baffle part being connected to the sleeve part, and an outer ring of the baffle part being connected to the gear sleeve part.

[0014] In some embodiments, the gear sleeve part is in an integral structure with the inner ring or is connected with the inner ring through a key; the sleeve part, the baffle part and the gear sleeve part are in an integral structure.

[0015] In some embodiments, the gear sleeve part and the sleeve part are both provided with the assembly position; the assembly position of the gear sleeve part is an inner hole wall, and the assembly position of the sleeve part is provided with a sleeve for mounting the support bearing.

[0016] The assembly position of the gear sleeve part and a mounting position of the inner ring are provided with a limiting structure for axially limiting the support bearing.

[0017] In some embodiments, at least one oil guide hole is arranged on the shaft sleeve and / or the cover; an oil guide groove is arranged on the outer surface of the shaft sleeve and is communicated with the oil guide hole.

[0018] In some embodiments, the at least one actuator includes a first actuator and a second actuator; the at least one support bearing includes a first support bearing and a second support bearing; the at least one gear includes a first gear and a second gear.

[0019] The first mounting position, the assembly position and the second mounting position are each provided with two; the two first mounting positions are distributed at the two ends of the shaft sleeve; the two assembly positions and the two second mounting positions are respectively arranged on the shaft sleeve and the cover.

[0020] In some embodiments, the first actuator and the second actuator are distributed at the two ends of the shaft sleeve; the first support bearing is arranged in the inner hole of the cover, and the second support bearing is arranged between the first actuator and the second actuator through a shaft sleeve; the first gear is arranged on the cover through a bearing, and the second gear is arranged on the shaft sleeve between the first actuator and the second support bearing through a bearing.

[0021] The engine input shaft assembly is drivingly connected with the EV intermediate shaft assembly through the first gear, and is drivingly connected with the ICE intermediate shaft assembly through the second gear.

[0022] In some embodiments, the first gear includes a gear ring portion and a connecting portion; the gear ring portion is arranged on the cover through a bearing, and the connecting portion is fixedly connected with the engaging teeth on one side of the first actuator; the gear hub of the first actuator is drivingly connected with the first mounting position; the engaging teeth on the other side of the first actuator are fixedly connected with the second gear.

[0023] In some embodiments, the gear hub of the second actuator is drivingly connected with the sun shaft of the planetary gear set, the engaging teeth on one side of the second actuator are drivingly connected with the shaft sleeve, and the engaging teeth on the other side of the second actuator are fixedly connected with the housing assembly.

[0024] In some embodiments, the planetary gear set is provided with a lubricating channel, an outlet of the lubricating channel is directed to the planetary bearing of the planetary gear set; the sun shaft of the planetary gear set is provided with a first hollow cavity penetrating in the axial direction, the planet carrier of the planetary gear set is provided with an oil collecting cavity; the rotor of the generator is provided with a second hollow cavity penetrating in the axial direction, the second hollow cavity, the first hollow cavity, the oil collecting cavity and the lubricating channel are communicated in sequence.

[0025] In some embodiments, the planet carrier comprises a planet carrier shaft, a connecting plate and a planet wheel shaft connected in sequence, the planet carrier shaft is provided with the oil collection cavity and the first oil guide hole in communication, and the planet wheel shaft is provided with the second oil guide hole;

[0026] The connecting plate is provided with an oil guide member outside, the first oil guide hole, the gap between the oil guide member and the connecting plate and the second oil guide hole are in communication in sequence to form the lubricating channel.

[0027] In some embodiments, the input shaft assembly further comprises an oil guide pipe installed in the second hollow cavity and the first hollow cavity, and the oil guide pipe extends into the oil collection cavity at a proximal planetary row end.

[0028] Based on the same inventive concept, the application further provides a hybrid electric drive system, comprising:

[0029] A housing assembly is provided with a shaft tooth cavity and a motor cavity;

[0030] The hybrid power transmission mechanism assembly described above, in the hybrid power transmission mechanism assembly, the engine input shaft assembly, the drive motor input shaft assembly, the ICE intermediate shaft assembly, the EV intermediate shaft assembly and the differential shaft assembly are all installed in the shaft tooth cavity, and the generator and the drive motor are both installed in the motor cavity;

[0031] A shift mechanism assembly is installed in the shaft tooth cavity and acts on the actuating mechanism.

[0032] In some embodiments, the housing assembly comprises a right housing, a left housing and an end cover connected in sequence, the right housing and the left housing enclose the shaft tooth cavity, and the left housing and the end cover enclose the motor cavity; the end cover is provided with an oil inlet channel.

[0033] In some embodiments, the hybrid electric drive system further comprises a controller assembly installed on the housing assembly, and three output copper bars of the controller assembly are electrically connected with three-phase input copper bars of the generator and the drive motor.

[0034] Based on the same inventive concept, the application further provides a vehicle comprising the hybrid electric drive system described above.

[0035] From the above technical solutions, the hybrid power transmission mechanism assembly provided by the application comprises an engine input shaft assembly, a generator, an ICE intermediate shaft assembly, a differential shaft assembly, an EV intermediate shaft assembly, a drive motor input shaft assembly and a drive motor which are in transmission connection. The engine input shaft assembly is in transmission connection with the engine, and the engine input shaft assembly is provided with a planetary gear set, an actuator and a gear, so that gear shifting can be realized. That is, the hybrid power transmission mechanism assembly of the application can realize hybrid power input of the engine and the motor, and multi-gear of the hybrid engine.

[0036] In terms of structural design, the hybrid power transmission mechanism assembly provided by the application is coaxial with the engine input shaft assembly and the generator, coaxial with the drive motor input shaft assembly and the drive motor, and the generator and the drive motor are located on the same side. When arranged, the motor assembly and the shaft gear assembly can be arranged separately, so that the design of the cooling and lubricating system and the high-low pressure partition can be facilitated. Compared with the bevel gear used in the prior art to realize the reversing transmission of the motor power, the technical solution of coaxial arrangement of the motor and the input shaft can reduce the one-way size of the hybrid power transmission mechanism assembly. Moreover, the installation height of the engine input shaft assembly is located between the drive motor and the differential shaft assembly, the projection of the engine input shaft assembly on the vertical plane overlaps the projection of the drive motor and the differential shaft assembly on the vertical plane. Compared with the technical solution of the prior art in which the assemblies are arranged in a "one" type, the hybrid power transmission mechanism assembly provided by the application has a triangular distribution of the shaft center of the engine input shaft assembly, the shaft center of the drive motor and the shaft center of the differential shaft assembly. Not only can the one-way size of the hybrid power transmission mechanism assembly be reduced, but also the triangular distribution structure is stable, and the triangular distribution can provide installation space for the ICE intermediate shaft assembly and the EV intermediate shaft assembly. Through the above structural design, the size of the hybrid power transmission mechanism assembly in the plane perpendicular to the engine input shaft axis can be reduced.

[0037] In the axial direction of the engine input shaft, the hybrid power transmission mechanism assembly provided by the application is provided with an inner ring gear shaft, which can be entirely sleeved on the planetary gear set and is in transmission connection with the inner ring gear of the planetary gear set, and serves as a part of the planetary gear set. The inner ring gear shaft is installed on the housing assembly through a support bearing, and a plurality of component mounting positions can be arranged thereon. The actuator, the support bearing and the gear are all mounted and fixed through the inner ring gear shaft.

[0038] In summary, compared to existing hybrid transmissions, the hybrid transmission assembly provided in this application, through its internal assembly position design, can reduce its size in both the axial direction along the engine input shaft and in the plane perpendicular to the engine input shaft axis. Furthermore, by incorporating an internal gear ring shaft in the engine input shaft assembly, it can simultaneously integrate planetary gear transmission functions, actuator installation, gear positioner installation, and necessary axial limiting functions. This significantly improves the integration of the hybrid transmission assembly, reduces its functional volume in the axial direction, and enables more flexible arrangement and mounting capabilities. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the hybrid power transmission mechanism assembly in Embodiment 1 of this application.

[0040] Figure 2 for Figure 1 A schematic diagram of the hybrid transmission mechanism assembly from a certain perspective.

[0041] Figure 3 for Figure 1 A schematic diagram of the hybrid transmission assembly from another perspective.

[0042] Figure 4 for Figure 1 A full sectional view of the engine input shaft assembly in the hybrid transmission mechanism assembly.

[0043] Figure 5 for Figure 4 A schematic diagram of the internal lubrication channels of the engine input shaft assembly.

[0044] Figure 6 for Figure 4 A schematic diagram of the internal gear ring shaft in the engine input shaft assembly.

[0045] Figure 7 for Figure 6 Full sectional view of the internal gear ring shaft.

[0046] Figure 8 This is an overall structural diagram of the hybrid electric drive system in the embodiments of this application.

[0047] Figure 9 for Figure 8 A schematic diagram of the hybrid electric drive system after the end caps have been removed.

[0048] Figure 10 for Figure 8 A schematic diagram of the hybrid electric drive system after the right housing has been removed.

[0049] Figure 11 for Figure 8Structure diagram of the middle plate of a hybrid electric drive system.

[0050] Legend of reference signs:

[0051] 1000 - hybrid electric drive system; 300 - housing assembly; 301 - motor cavity; 302 - shaft tooth cavity; 303 - oil inlet channel; 310 - right housing; 320 - left housing, 321 - middle plate, 3211 - bearing hole, 3212 - avoidance area; 330 - end cover; 400 - controller assembly; 500 - gear shifting mechanism assembly.

[0052] 600 - hybrid gear mechanism assembly; 610 - engine input shaft assembly; 620 - generator, 621 - rotor of the generator, 622 - second hollow cavity; 630 - ICE intermediate shaft assembly, 631 - ICE intermediate shaft, 632 - first ICE intermediate gear, 633 - second ICE intermediate gear; 640 - differential shaft assembly; 650 - EV intermediate shaft assembly, 651 - EV intermediate shaft, 652 - first EV intermediate gear, 653 - second EV intermediate gear; 660 - drive motor input shaft assembly, 661 - input shaft, 662 - transmission gear; 670 - drive motor, 671 - rotor of the drive motor.

[0053] 200 - inner ring shaft, 201 - inner hole; 210 - shaft sleeve part; 220 - cover part, 221 - tooth sleeve part, 222 - baffle part, 223 - inner spline; 230 - first mounting position; 240 - assembly position, 241 - inner hole wall; 250 - second mounting position; 260 - limiting structure, 261 - circlip groove, 262 - end face, 263 - convex edge, 264 - hole shoulder; 270 - oil guide hole; 280 - oil guide groove.

[0054] 100 - planetary gear set; 110 - sun gear shaft, 111 - first hollow cavity, 1111 - oil storage cavity, 1112 - hole expansion section, 112 - fourth oil guide hole, 113 - bearing mounting groove; 120 - planet carrier, 121 - planet carrier shaft, 122 - connecting plate, 123 - planet gear shaft, 124 - oil collection cavity, 1241 - large hole section, 1242 - small hole section, 125 - first oil guide hole, 126 - second oil guide hole, 1261 - axial oil guide hole, 1262 - radial oil guide hole, 127 - third oil guide hole; 130 - sun gear; 140 - planet gear; 150 - inner ring; 160 - lubrication channel; 171 - planet gear bearing; 172 - first planet carrier bearing; 173 - second planet carrier bearing; 174 - intermediate bearing; 175 - first support bearing; 176 - second support bearing; 177a - needle bearing for mounting first gear, 177b - needle bearing for mounting inner ring shaft, 177c - needle bearing for mounting second gear; 178 - thrust bearing; 179 - ball bearing.

[0055] 10-oil guide pipe, 11-oil outlet hole, 12-oil outlet; 20-oil guide; 30-bushing; 40-actuator, 41-tooth hub, 42-engaging tooth, S1-first actuator, S2-second actuator; 50-first gear, 51-tooth ring part, 52-connection part; 60-second gear; 70-clamp spring; 80-bushing. DETAILED DESCRIPTION

[0056] In order to make the skilled in the art to which the present application belongs more clearly understand the present application, the following specific embodiments combined with the drawings, the technical solutions of the present application are described in detail.

[0057] Embodiment 1:

[0058] The embodiment of the present application provides a kind of hybrid power transmission mechanism assembly 600, see Figures 1 to 3 Including transmission connection engine input shaft assembly 610, generator 620, ICE intermediate shaft assembly 630, differential shaft assembly 640, EV intermediate shaft assembly 650, drive motor input shaft assembly 660 and drive motor 670.Engine input shaft assembly 610 is connected with engine, engine input shaft assembly 610 is equipped with planetary gear set 100, actuator and gear, so as to realize gear change. That is, the hybrid power transmission mechanism assembly 600 of the embodiment can realize the hybrid power input of engine+motor, and the multi-gear of hybrid engine.

[0059] See Figure 2 And Figure 3 For the position arrangement of each assembly described above; Engine input shaft assembly 610 and generator 620 are coaxially arranged, that is, the rotor 621 of the generator 620 is directly connected with the input shaft (sun gear shaft 110, planet carrier 120 or inner ring gear shaft 200) of engine input shaft assembly 610, for example, by key connection, gear connection and the like.Drive motor input shaft assembly 660 and drive motor 670 are coaxially arranged, that is, the rotor 671 of drive motor 670 is directly connected with the input shaft 661 of drive motor input shaft assembly 660, for example, by key connection, gear connection and the like, and the transmission gear 662 is integrally formed on the input shaft 661 of drive motor input shaft assembly 660.Generator 620 and drive motor 670 are located on the same side. For example, the axis of engine input shaft assembly 610 is parallel to the vehicle width direction, then the side of engine input shaft assembly 610 close to the driver's seat is left side (marked as L), and the side of engine input shaft assembly 610 close to the co-driver's seat is right side (marked as R), then generator 620 and drive motor 670 are located on the left side of engine input shaft assembly 610 or on the right side of engine input shaft assembly 610. Figure 2 And Figure 3A structural diagram of the hybrid transmission mechanism assembly 600 is shown when the generator 620 and the drive motor 670 are located on the left side of the engine input shaft assembly 610.

[0060] By setting the generator 620 and the drive motor 670 on the same side of the engine input shaft assembly 610, the motor assembly (the generator 620 and the drive motor 670) and the shaft gear assembly (the engine input shaft assembly 610, the ICE intermediate shaft assembly 630, the differential shaft assembly 640, the EV intermediate shaft assembly 650, and the drive motor input shaft assembly 660) can be arranged separately, which facilitates the design of the cooling and lubricating system and the high and low voltage partition: the motor usually adopts oil injection cooling, and the working voltage of the motor is relatively large; the bearings of the shaft gear assembly usually adopt active lubrication, and the voltage of the electronic devices such as the shift motor and the sensor is relatively small. Moreover, the scheme of coaxially arranging the motor and the input shaft can reduce the one-way size of the hybrid transmission mechanism assembly 600.

[0061] Among the above assemblies, the shaft center of the drive motor 670 is the highest, the overall height of the ICE intermediate shaft assembly 630 and the differential shaft assembly 640 is the lowest, the mounting height of the engine input shaft assembly 610 is between the drive motor 670 and the differential shaft assembly 640, and the projection of the engine input shaft assembly 610 on the vertical plane overlaps with the projection of the drive motor 670 and the differential shaft assembly 640 on the vertical plane. Therefore, the shaft centers of the engine input shaft assembly 610, the drive motor 670, and the differential shaft assembly 640 are in a triangular distribution, as shown in FIG. 6B. Figure 1 The triangular distribution structure not only can reduce the one-way size of the hybrid transmission mechanism assembly 600, but also is stable in structure. In addition, the triangular distribution can provide mounting space for the ICE intermediate shaft assembly 630 and the EV intermediate shaft assembly 650, and can further reduce the size of the hybrid transmission mechanism assembly 600 in the plane perpendicular to the engine input shaft axis. For details, see FIG. 6B. Figure 1 In some embodiments, the shaft center of the EV intermediate shaft assembly 650 is located in the triangular region surrounded by the shaft centers of the engine input shaft assembly 610, the drive motor 670, and the differential shaft assembly 640. The shaft center of the ICE intermediate shaft assembly 630 is located below the line connecting the shaft centers of the engine input shaft assembly 610 and the differential shaft assembly 640, and the shaft center of the ICE intermediate shaft assembly 630 is the lowest in height.

[0062] The engine input shaft assembly 610 is used to connect the engine, and the gear position change of the engine is also realized through the engine input shaft assembly 610. For details, see FIG. 6A. Figure 4The engine input shaft assembly 610 comprises the planetary gear set 100, at least one actuator, at least one support bearing, at least one range gear, and an inner ring shaft 200. The inner ring shaft 200 is sleeved outside the planetary gear set 100 and is in transmission connection with the inner ring 150 of the planetary gear set 100, serving as a part of the planetary gear set 100. The at least one actuator, the at least one support bearing, and the at least one range gear are all arranged on the inner ring shaft 200. By arranging the inner ring shaft 200 on the engine input shaft assembly 610, the transmission function of the planetary gear set 100, the installation of the actuator, the installation of the range gear, and the necessary axial limiting function can be integrated, thereby greatly improving the integration of the hybrid power transmission mechanism assembly 600, reducing the functional volume of the hybrid power transmission mechanism assembly 600 in the axial direction, and making it have more flexible arrangement and mounting performance.

[0063] During gear shifting, the shift mechanism acts on the actuator, and the actuator changes the torque transmission path, so that gears with different diameters participate in power transmission, thereby realizing gear shifting. The torque of the engine input shaft assembly 610 is transmitted to the EV intermediate shaft assembly 650 and the ICE intermediate shaft assembly 630. Referring to Figure 2 and Figure 3 In some embodiments, the EV intermediate shaft assembly 650 comprises an EV intermediate shaft 651 and a first EV intermediate gear 652 and a second EV intermediate gear 653 mounted on the EV intermediate shaft 651. The diameter of the first EV intermediate gear 652 is larger than that of the second EV intermediate gear 653. Since the second EV intermediate gear 653 is smaller, the second EV intermediate gear 653 can be integrally formed with the EV intermediate shaft 651. The first EV intermediate gear 652 is sleeved on the EV intermediate shaft 651 and is connected by a key. The EV intermediate shaft assembly 650 is in transmission connection with the engine input shaft assembly 610 and the drive motor input shaft assembly 660 through the first EV intermediate gear 652. Specifically, the first EV intermediate gear 652 is in meshing engagement with the first range gear 50 and the transmission gear 662 of the drive motor input shaft assembly 660. The EV intermediate shaft assembly 650 is in transmission connection with the differential shaft assembly 640 through the second EV intermediate gear 653.

[0064] Referring to Figure 2 and Figure 3In some embodiments, the ICE intermediate shaft assembly 630 includes an ICE intermediate shaft 631 and a first ICE intermediate gear 632 and a second ICE intermediate gear 633 mounted on the ICE intermediate shaft 631. The first ICE intermediate gear 632 has a larger diameter than the second ICE intermediate gear 633, and the second ICE intermediate gear 633 can be integrally formed with the ICE intermediate shaft 631, while the first ICE intermediate gear 632 is sleeved on the ICE intermediate shaft 631 and connected by a key. The ICE intermediate shaft assembly 630 is in driving connection with the engine input shaft assembly 610 through the first ICE intermediate gear 632, specifically, the first ICE intermediate gear 632 is in meshing connection with the second gear 60, and the ICE intermediate shaft assembly 630 is in driving connection with the differential shaft assembly 640 through the second ICE intermediate gear 633.

[0065] The engine input shaft assembly 610 is the most important shaft gear assembly in the hybrid transmission mechanism assembly 600, and realizes the functions of engine power input, energy recovery and gear shifting. The inner ring gear shaft 200 in the engine input shaft assembly 610 serves as a support framework, and realizes the installation and fixation of the planetary gear set 100, at least one actuator, at least one support bearing and at least one gear. In the present embodiment, the engine input shaft assembly 610 is provided with only one planetary gear set 100, as shown in Figure 4 The planetary gear set 100 includes a sun gear shaft 110, a carrier 120, a sun gear 130, a planet gear 140 and an inner ring gear 150. The sun gear 130 is mounted on the sun gear shaft 110 or integrally formed with the sun gear shaft 110. The planet gear 140 is mounted on the planet gear 140 shaft 123 of the carrier 120 through the planet gear 140 bearing 40. The sun gear 130, the planet gear 140 and the inner ring gear 150 are sequentially arranged from inside to outside and in meshing connection, and the inner ring gear 150 is in driving connection with the inner ring gear shaft 200.

[0066] Referring to Figure 4The sun shaft 110 or the planet carrier shaft 121 of the planetary gear set 100 is connected with the engine to realize the engine power input. The sun shaft 110 or the planet carrier shaft 121 of the planetary gear set 100 is connected with the motor generator 620 to realize the motor power input. The inner ring shaft 200 is sleeved on the planet carrier shaft 121 or the sun shaft 110 of the planetary gear set 100 for engine power input. For example, the sun shaft 110 of the planetary gear set 100 is used for engine input, the inner ring shaft 200 and the planet carrier shaft 121 are used as output, the inner ring shaft 200 is sleeved on the planet carrier shaft 121, and the planet carrier shaft 121 or the inner ring shaft 200 is provided with a connecting structure for transmission connection with the motor generator 620. If the planet carrier shaft 121 of the planetary gear set 100 is used for input, the inner ring shaft 200 and the sun shaft 110 are used as output, the inner ring shaft 200 is sleeved on the sun shaft 110, and the sun shaft 110 or the inner ring shaft 200 is provided with a connecting structure for transmission connection with the motor generator 620. In the embodiment, the planet carrier shaft 121 of the planetary gear set 100 is used for engine power input, the inner ring shaft 200 and the sun shaft 110 are used for engine power output, and the inner ring shaft 200 is sleeved on the sun shaft 110.

[0067] Please refer to Figures 4 to 7 The inner ring shaft 200 includes a shaft sleeve part 210 and a cover part 220. The shaft sleeve part 210 is a shaft sleeve structure and can be sleeved on a shaft, such as the sun shaft 110 or the planet carrier shaft 121 of the planetary gear set 100. The axial dimension of the shaft sleeve part 210 is relatively long, and a plurality of first mounting positions 230 for mounting the actuator 40 or a plurality of assembly positions 240 for mounting support bearings or a plurality of second mounting positions 250 for mounting gear shift gears can be arranged on the shaft sleeve part 210 in the axial direction. The cover part 220 is in transmission connection with the inner ring 150 of the planetary gear set 100 and participates in the operation of the planetary gear set 100 as a part of the planetary gear set 100. The inner hole profile and the outer profile of the cover part 220 can be used as the assembly positions 240 for mounting support bearings or the second mounting positions 250 for mounting gear shift gears. Therefore, by arranging the inner ring shaft 200, the transmission function of the planetary gear set 100, the mounting of the actuator 40, the mounting of the gear shift gears, and the necessary axial limiting function can be integrated, so that the integration degree of the engine input shaft assembly 610 is greatly improved, the functional volume of the engine input shaft assembly 610 is reduced, and the electric drive system provided with the engine input shaft assembly 610 has more flexible arrangement and mounting performance.

[0068] The cover part 220 of the inner ring gear shaft 200 is covered on the main body part of the planetary gear set 100, and the sun gear 130, the planet gear 140 and the inner ring gear 150 of the planetary gear set 100 are located in the inner hole of the cover part 220. Specifically, the cover part 220 includes a tooth sleeve part 221 and a baffle part 222, the inner ring of the baffle part 222 is connected with the sleeve part 210, and the outer ring is connected with the tooth sleeve part 221. The structure of the tooth sleeve part 221 is similar to that of the sleeve part 210, and both are sleeve structures. The tooth sleeve part 221 is in driving connection with the inner ring gear 150 of the planetary gear set 100. The baffle part 222 can be a ring-shaped flat plate, a ring-shaped spherical shell or a three-dimensional structure composed of multiple connecting rods, and the specific structure of the baffle part 222 is not limited in the present application. The sleeve part 210, the baffle part 222 and the tooth sleeve part 221 can be an integral structure or be fixedly connected by welding, bonding or screwing. The tooth sleeve part 221 and the inner ring gear 150 can be an integral structure or be in key connection, so as to realize power transmission and enable the entire inner ring gear shaft 200 to rotate together with the inner ring gear 150 of the planetary gear set 100. Figure 4

[0069] The inner ring gear shaft 200 can be an integral structure, that is, the sleeve part 210 and the cover part 220 are integrally formed by casting or machining. The inner ring gear shaft 200 can also be a split structure, and the sleeve part 210 and the cover part 220 can be fixedly connected by welding, bonding or screwing. In the present embodiment, the inner ring gear shaft 200 is integrally formed by casting, and then the inner and outer profiles are machined. The material of the inner ring gear shaft 200 can be stainless steel, cast aluminum or other metal materials.

[0070] The cover part 220 of the inner ring gear shaft 200 is covered on the main body part of the planetary gear set 100, and the sun gear 130, the planet gear 140 and the inner ring gear 150 of the planetary gear set 100 are located in the inner hole of the cover part 220. Specifically, the cover part 220 includes a tooth sleeve part 221 and a baffle part 222, the inner ring of the baffle part 222 is connected with the sleeve part 210, and the outer ring is connected with the tooth sleeve part 221. The structure of the tooth sleeve part 221 is similar to that of the sleeve part 210, and both are sleeve structures. The tooth sleeve part 221 is in driving connection with the inner ring gear 150 of the planetary gear set 100. The baffle part 222 can be a ring-shaped flat plate, a ring-shaped spherical shell or a three-dimensional structure composed of multiple connecting rods, and the specific structure of the baffle part 222 is not limited in the present application. The sleeve part 210, the baffle part 222 and the tooth sleeve part 221 can be an integral structure or be fixedly connected by welding, bonding or screwing. The tooth sleeve part 221 and the inner ring gear 150 can be an integral structure or be in key connection, so as to realize power transmission and enable the entire inner ring gear shaft 200 to rotate together with the inner ring gear 150 of the planetary gear set 100.

[0071] Referring to Figure 4 ​In the embodiment, the sleeve part 221 is connected with the inner ring gear 150 through spline connection, the inner profile surface of the sleeve part 221 is provided with an inner spline 223, the inner profile surface of the inner ring gear 150 is a tooth meshing with the planetary gear 140, the outer profile surface is an outer spline, the inner ring gear 150 is clamped into the inner spline 223 in the axial direction, one side of the inner ring gear 150 is limited in the axial direction by the end surface 262 inside the baffle part 222, the inner spline 223 of the sleeve part 221 is provided with a snap spring groove 261, after a snap spring 70 is installed in the snap spring groove 261, the snap spring 70 can limit the other side of the inner ring gear 150 in the axial direction. Thus, it is ensured that the sleeve part 221 and the inner ring gear 150 cannot move in the axial direction relative to each other. Moreover, the snap spring 70 is a detachable structure, which does not affect the installation and dismounting of the inner ring gear 150.

[0072] The plurality of component mounting positions on the inner ring gear shaft 200 mainly include a first mounting position 230 for mounting the actuator 40, an assembly position 240 for arranging a support bearing, and a second mounting position 250 for arranging a gear. The actuator 40 can be a synchronizer or a clutch, and the actuator 40 can be sleeved on the inner ring gear shaft 200 or fixedly connected or drivingly connected with the inner ring gear shaft 200. The support bearing is used for mounting the inner ring gear shaft 200 on the housing assembly 300. The gear can be a gear for blocking or a driving gear for driving only, and the gear can be sleeved on the inner ring gear shaft 200 or fixedly connected or drivingly connected with the inner ring gear shaft 200. In other embodiments, other component mounting positions can also be arranged on the inner ring gear shaft 200 according to specific conditions, such as a component mounting position for mounting an oil blocking member, a component mounting position for arranging a sensor, etc.

[0073] In the above component mounting positions, the first mounting position 230 is arranged only on the shaft sleeve part 210, mainly because the actuator 40 needs a certain axial space for operation, and the axial dimension of the shaft sleeve part 210 is larger than that of the cover part 220, which can meet the axial space required for the operation of the actuator 40. On the other hand, the shaft sleeve part 210 is sleeved on the sun gear shaft 110 or the planet carrier shaft 121 of the planetary gear set 100, and the cover part 220 is sleeved on the sun gear 130, the planetary gear 140 and the inner ring gear 150 of the planetary gear set 100. The radial dimension of the shaft sleeve part 210 is smaller than that of the cover part 220, which is convenient for arranging the actuator 40.

[0074] In this embodiment, the actuator 40 functions to change the transmission ratio of the planetary gear set 100, such as engaging the inner ring gear 150 of the planetary gear set 100 with the sun shaft 110 to rotate together, engaging the inner ring gear 150 with the carrier to rotate together, engaging the carrier with the sun shaft 110 to rotate together, locking the inner ring gear 150, locking the sun gear 130, locking the planet gear 140, etc. In this embodiment, the first mounting position 230 is a key connection structure, so that the actuator 40 is in transmission connection with the inner ring gear shaft 200. Since the inner ring gear shaft 200 is in transmission connection with the inner ring gear 150 of the planetary gear set 100, the actuator 40 can change the movement of the inner ring gear 150, such as engaging the inner ring gear 150 with the sun shaft 110 or the carrier, or locking the inner ring gear 150.

[0075] The inner ring gear shaft 200 is provided with a plurality of limiting structures 260 for axial limiting. The limiting structure 260 can be a limiting boss, a limiting step, or a groove for mounting the snap spring 70. If the limiting structure 260 is used to axially limit the bearing, the limiting boss, the limiting step, or the structure end face limiting is usually selected. If the limiting structure 260 is used to axially limit the gear, the gear is in transmission connection with the inner ring gear shaft 200, such as spline connection, and the snap spring 70 is usually selected for axial limiting. In the design of the limiting structure 260, in order to facilitate the installation of the actuator 40, the gear, the bearing, and other structural members, in this embodiment, the outer surface of the sleeve part 210 is designed as a stepped shaft. Specifically, from the far planetary gear set end to the near planetary gear set end, the outer diameter of the sleeve part 210 shows an increasing trend, and each structural member is successively sleeved on the sleeve part 210. The stepped shaft itself can form a plurality of limiting steps for axial positioning. In addition, the stepped shaft is further provided with a plurality of convex edges 263 for axially limiting the shaft sleeve 80, the bearing, and the like.

[0076] The first mounting position 230 is provided with a limiting structure 260 for axially limiting the actuator 40, to prevent the actuator 40 from axially rotating relative to the inner ring gear shaft 200. Specifically, in this embodiment, the actuator 40 and the inner ring gear shaft 200 are spline connected, that is, the key connection structure of the first mounting position 230 adopts an external spline, and the inner spline is provided on the inner circle of the tooth hub 41 and / or the joint tooth 42 of the actuator 40. For spline connection, the actuator 40 and the inner ring gear shaft 200 are limited by the snap spring 70, and the corresponding limiting structure 260 is the snap spring groove 261 provided on the external spline. After the tooth hub 41 and / or the joint tooth 42 of the actuator 40 are installed in place, the snap spring 70 is clamped in the snap spring groove 261.

[0077] To ensure the installation stability of the inner gear ring shaft 200, two support bearings are arranged in the embodiment, which are the first support bearing 175 and the second support bearing 176. The first support bearing 175 and the second support bearing 176 can be ball bearings, needle bearings, thrust bearings, etc. In the embodiment, ball bearings are adopted. The number of assembly positions 240 is two, and the tooth sleeve part 221 and the shaft sleeve part 210 are both provided with the assembly positions 240. Referring to Figure 4 , the first support bearing 175 and the second support bearing 176 are respectively arranged on the shaft sleeve part 210 and the cover part 220. The first support bearing 175 is arranged in the inner hole of the cover part 220, and the second support bearing 176 is arranged between the first actuator S1 and the second actuator S2 through the shaft sleeve 80. The first support bearing 175 and the second support bearing 176 mainly play the role of supporting the inner gear ring shaft 200, and therefore can both be ball bearings. The first support bearing 175 is axially limited by the end face 262 of the first mounting position 230, i.e. the hole shoulder 264 formed by the first mounting position 230 and the support position of the cover part 220. The second support bearing 176 is axially limited by the boss arranged on the shaft sleeve 80. The inner ring of the first support bearing 175 and the outer ring of the second support bearing 176 are respectively in interference fit with the bearing mounting hole of the housing assembly 300.

[0078] For the assembly positions 240 for arranging the support bearings and the second mounting positions 250 for arranging the gears, the working forms of the support bearings and the gears are rotation, and no axial movement is required. Therefore, the assembly positions 240 and the second mounting positions 250 can be arranged on the cover part 220 and / or the shaft sleeve part 210 according to actual needs. The first support bearing 175 is arranged on the assembly position 240 of the tooth sleeve part 221, and the second support bearing 176 is arranged on the assembly position 240 of the shaft sleeve part 210.

[0079] Specifically referring to Figure 6 and Figure 7 , the assembly position 240 of the cover part 220 is the inner hole wall 241 of the tooth sleeve part 221, and the assembly position 240 of the shaft sleeve part 210 is a polished rod segment. The first support bearing 175 is in interference fit with the inner hole wall 241, and the second support bearing 176 is in interference fit with the polished rod segment. A limiting structure 260 for axially limiting the first support bearing 175 is arranged between the assembly position 240 of the tooth sleeve part 221 and the mounting position of the inner gear ring 150. The limiting structure 260 at this position can adopt end face limiting (such as shaft shoulder limiting, boss limiting) or snap spring limiting. Referring to Figure 7 , in the embodiment, the hole shoulder 264 is formed between the inner hole wall 241 of the tooth sleeve part 221 and the inner spline 223, and the first support bearing 175 arranged on the inner hole wall 241 is axially limited by the hole shoulder 264.

[0080] In some embodiments, the assembly position 240 of the shaft sleeve part 210 is provided with a shaft sleeve 80, which can compensate for the diameter difference between the second support bearing 176 and the polished rod section, and can also be used for axial positioning of the surrounding structure. The shaft sleeve 80 is interference fitted with the corresponding polished rod section, and the second support bearing 176 is interference fitted on the shaft sleeve 80. When the shaft sleeve 80 is used for axial positioning of the surrounding structure, the surrounding structure also serves as an axial positioning structure for the shaft sleeve 80.

[0081] In the embodiment, the engine input shaft assembly 610 is designed to meet the engine four gears. Specifically, the engine four gears are achieved by two actuators 40 and two gear gears, which are respectively denoted as the first actuator S1, the second actuator S2, the first gear gear 50 and the second gear gear 60. The first actuator S1 and the second actuator S2 are synchronizers, the first gear gear 50 is a large gear ring, and the engine three gears and the engine four gears are achieved. The second gear gear 60 is a small gear ring, and the engine one gear and the engine two gears are achieved.

[0082] In order to adapt to the gear design of the engine input shaft assembly 610, the first mounting position 230, the assembly position 240 and the second mounting position 250 of the inner ring gear shaft 200 are each provided with two. In order to ensure that the two actuators 40 installed on the two first mounting positions 230 have sufficient axial shifting space, the two first mounting positions 230 are distributed at both ends of the shaft sleeve part 210. It should be noted that the first mounting position 230 can install all components of the actuator 40, or can only be used to install part of the components of the actuator 40, such as only installing the gear hub 41 of the synchronizer or the single-sided combination gear 42. In order to reduce the axial size of the inner ring gear shaft 200 and improve the mounting performance of the hybrid transmission provided with the inner ring gear shaft 200, in the embodiment, the two assembly positions 240 and the two second mounting positions 250 are respectively arranged on the shaft sleeve part 210 and the cover part 220, as shown in Figure 6

[0083] Specifically, the first actuator S1 and the second actuator S2 are distributed at both ends of the shaft sleeve part 210. The first actuator S1 and the second actuator S2 can be synchronizers (single-sided or double-sided) or clutches according to needs. The first actuator S1 / second actuator S2 can be selectively connected to the sun gear shaft 110 and the inner ring gear shaft 200, selectively connected to the planet carrier shaft 121 and the inner ring gear shaft 200, selectively connected to the inner ring gear shaft 200 and the first gear gear 50, or selectively connected to the inner ring gear shaft 200 and the second gear gear 60 according to actual needs.

[0084] ​In this embodiment, the first actuator S1 is a synchronizer, having a gear hub 41 and two sides of the engagement teeth 42, the gear hub 41 of the first actuator S1 is in transmission connection with the first mounting position 230; the engagement teeth 42 on one side of the first actuator S1 is in fixed connection with the first gear 50; the engagement teeth 42 on the other side of the first actuator S1 is in fixed connection with the second gear 60, the first actuator S1 is used to selectively connect the inner ring gear shaft 200 with the first gear 50 or the second gear 60. The second actuator S2 is also a synchronizer, having a gear hub 41 and two sides of the engagement teeth 42, the gear hub 41 of the second actuator S2 is in transmission connection with the sun gear shaft 110 of the planetary gear set 100, the engagement teeth 42 on one side of the second actuator S2 is in transmission connection with the shaft sleeve 210, the engagement teeth 42 on the other side of the second actuator S2 is in fixed connection with the housing assembly 300, the second actuator S2 is used to selectively connect the sun gear shaft 110 with the inner ring gear shaft 200 or the housing assembly 300, so as to realize different speed ratio output of the planetary gear set 100. In order to improve the axial bearing capacity of the engine input shaft assembly 610, a thrust bearing is arranged between the gear hub 41 of the second actuator S2 and the housing assembly 300, and the thrust bearing is sleeved on the sun gear shaft 110.

[0085] The first gear 50 and the second gear 60 are respectively installed in two second mounting positions 250, since the first gear 50 and the second gear 60 are both sleeved on the inner ring gear shaft 200, the inner holes of the first gear 50 and the second gear 60 are both provided with bearings, for example, ball bearings, as shown in Figure 4 In other embodiments, if the gear is in transmission connection with the inner ring gear shaft 200, the bearing does not need to be arranged. In order to reduce the axial length of the inner ring gear shaft 200, the tooth sleeve 221 and the shaft sleeve 210 are both provided with the second mounting position 250, that is, the first gear 50 is sleeved on the tooth sleeve 221 through the bearing, and the second gear 60 is sleeved on the shaft sleeve 210 through the bearing.

[0086] Specifically, referring to Figure 4 , the first gear 50 and the second gear 60 are both gear rings, the first gear 50 is sleeved on the cover 220 through the needle bearing 177a, the second gear 60 is sleeved on the shaft sleeve 210 through the needle bearing 177c and is located between the first actuator S1 and the second support bearing 176, and the first gear 50 and the second gear 60 can both rotate freely relative to the inner ring gear shaft 200. In this embodiment, the first gear 50 is a large gear ring, and the inner hole diameter of the first gear 50 is larger than that of the second gear 60.

[0087] The first gear 50 needs to meet the diameter requirement of being sleeved on the cover part 220 and be connected with the first actuator S1 installed on the shaft sleeve part 210, and therefore, the first gear 50 is specifically provided with a gear ring part 51 and a connecting part 52. The gear ring part 51 is similar in structure to the tooth sleeve part 221 of the inner ring gear shaft 200 and is also a shaft sleeve structure. The connecting part 52 is similar in structure to the baffle part 222 of the inner ring gear shaft 200 and is also an annular plate structure. The gear ring part 51 and the connecting part 52 can be an integral molding structure or be fixed by welding or threaded fasteners. The gear ring part 51 is axially limited by the convex edge 263 provided on the outer shape surface of the cover part 220 and is sleeved on the cover part 220 through the needle bearing 177a. The connecting part 52 is fixedly connected with the combination tooth 42 on one side of the first actuator S1, and the connecting part 52 and the combination tooth 42 of the first actuator S1 can be integrally formed, fixed by welding or transmission connection. The second gear 60 is fixedly connected with the combination tooth 42 on the other side of the first actuator S1, and the second gear 60 and the combination tooth 42 of the first actuator S1 can be integrally formed, fixed by welding or transmission connection. The second gear 60 is axially limited by the shaft sleeve 80 of the second support bearing 176.

[0088] In order to further improve the axial bearing capacity of the engine input shaft assembly 610, as shown in Figure 4 The connecting part 52 and the cover part 220 are provided with a thrust bearing 178, and specifically, the connecting part 52 and the baffle part 222 are provided with a thrust bearing 178. That is, the first gear 50 is sleeved on the inner ring gear shaft 200 through the needle bearing 177a and the thrust bearing 178 and is axially limited by the thrust bearing 178 and the end surface 262 outside the baffle part 222. The cover part 220 of the inner ring gear shaft 200 is provided with an oil guide hole 270 penetrating the wall thickness, so that the lubricating oil splashed in the planetary gear set 100 can enter the gap between the first gear 50 and the cover part 220 through the oil guide hole 270 on the cover part 220, lubricating the needle bearing 177a and the thrust bearing 178.

[0089] Since the inner ring gear shaft 200 of the embodiment needs to install a plurality of bearings and gears, the lubrication requirements of the plurality of bearings and gears need to be ensured, and specifically, the splashing lubrication or active lubrication mode can be adopted. Since the bearings and gears of the inner ring gear shaft 200 are arranged compactly and axially limited by each other, it is difficult to achieve the expected lubrication effect only by external splashing lubricating oil, and therefore, the active lubrication scheme is adopted in the embodiment.

[0090] Specifically, referring to Figure 6 and Figure 7The shaft sleeve part 210 is provided with at least one oil guide hole 270 penetrating the sleeve wall of the shaft sleeve part 210. The oil guide holes 270 are usually arranged in multiple numbers in the circumferential direction. In the same cross section, the oil guide holes 270 are arranged in groups. The shaft sleeve part 210 can be provided with multiple groups of oil guide holes 270 in the axial direction. In the embodiment, the outer surface of the shaft sleeve part 210 is provided with oil guide grooves 280 connected to the oil guide holes 270. The oil guide grooves 280 are connected to the oil guide holes 270 in the group. The specific number of the oil guide grooves 280 is determined according to the actual needs. The oil guide grooves 280 are concave grooves. The lubricating oil flowing out of the oil guide holes 270 can be evenly distributed in the circumferential direction by arranging the oil guide grooves 280. In addition, the oil guide grooves 270 are grooves, which can also be used as a relief groove when machining the outer surface of the inner ring gear shaft 200.

[0091] In addition, in some embodiments, the sleeve part 220 can also be provided with oil guide holes 270. The oil guide holes 270 can be arranged on the tooth sleeve part 221 and / or the baffle part 222 to facilitate the entry and exit of lubricating oil into the inner hole of the cover part 220. Referring to Figure 2 In the embodiment, the baffle part 222 can be provided with several oil guide holes 270. The oil guide holes 270 are arranged to be inclined outwardly in the splashing direction, which facilitates the splashing of lubricating oil from the oil guide holes 270 when the planetary gear set 100 rotates, and lubricates the structure outside the inner ring gear shaft 200.

[0092] In the engine input shaft assembly 610, the planetary gear set 100 is the main part of power split. The lubrication of the planetary gear set 100 is an important condition to ensure the normal operation of the engine input shaft assembly 610. The main lubrication requirement of the planetary gear set 100 is the planetary wheel bearing 171. On the one hand, the number of planetary wheel bearings 171 is large and widely distributed. On the other hand, the installation position of the planetary wheel bearing 171 is located in the area surrounded by the planet carrier 120 and between the planetary wheel 140 and the planetary wheel shaft 123. Therefore, the lubricating oil is difficult to enter the installation position of the planetary wheel bearing 171 due to the blockage of the planetary wheel 140 and the planet carrier 120. Therefore, the planetary wheel bearing 171 is prone to ablation, which affects the use of the entire planetary gear set 100.

[0093] In order to improve the lubrication of the planetary gear set 100, referring to Figure 5In the embodiment, the planetary gear set 100 is provided with a lubricating channel 160, and the sun shaft 110 of the planetary gear set 100 is provided with a first hollow cavity 111 penetrating in the axial direction. The sun shaft 110 can be integrally formed with the sun gear 130 of the planetary gear set 100 or be connected by a key. In the embodiment, the sun shaft 110 is integrally formed with the sun gear 130. The carrier 120 of the planetary gear set 100 is provided with an oil collecting cavity 124. The first hollow cavity 111, the oil collecting cavity 124 and the lubricating channel 160 are sequentially communicated, and the outlet of the lubricating channel 160 faces the planetary gear bearing 171 of the planetary gear set 100. In order to facilitate lubrication of the structure outside the sun shaft 110, a plurality of fourth oil guide holes 112 are arranged on the sun shaft 110 and communicated with the first hollow cavity 111. The outlet of one of the fourth oil guide holes 112 faces the bearing between the sun shaft 110 and the inner ring gear shaft 200.

[0094] Specifically, the lubricating channel 160 of the carrier 120 can be an oil channel formed in the base material of the carrier 120 or an oil channel formed by surrounding external elements, as long as the lubricating oil can be sent to the installation position of the planetary gear bearing 171. In the embodiment, the planetary gear bearing 171 is a needle bearing, which can be a full needle bearing or a steel retainer needle bearing. The planetary gear bearing 171 is a double-row needle bearing, and a gasket is arranged in the middle. The gasket forms a gap with the planetary gear shaft 123 in the radial direction, so that the lubricating oil can enter the needle bearing and lubricate the surface of the roller of the needle bearing.

[0095] Please refer to Figure 5 In the embodiment, the carrier 120 includes a carrier shaft 121, a connecting plate 122 and a plurality of planetary gear shafts 123 connected in sequence. The planetary gear 140 is sleeved on the planetary gear shaft 123, and the planetary gear 140 is provided with a planetary gear bearing 171 installed between the planetary gear 140 and the planetary gear shaft 123. The two sides of the planetary gear 140 are engaged with the gears of the sun gear 130 and the inner ring gear 150 through gears. The carrier shaft 121 is located at the center of the connecting plate 122, and the planetary gear shafts 123 are uniformly distributed in the circumferential direction and take the carrier shaft 121 as the center. The carrier shaft 121 and the connecting plate 122 can be detachably connected by a threaded fastener, a buckle structure or the like, or be fixed by welding, or the carrier shaft 121 and the connecting plate 122 are an integral structure. In the embodiment, the carrier shaft 121 is press-fitted on the connecting plate 122 by interference. The connecting plate 122 and the planetary gear shaft 123 can also be detachably connected by a threaded fastener, a buckle structure or the like, or be fixed by welding, or the connecting plate 122 and the planetary gear shaft 123 are an integral structure, which is not limited in the application. The overall external shape and profile of the carrier 120 are also not limited in the application. For example, the carrier 120 can adopt a cage structure.

[0096] Specifically, refer to Figure 5The planet carrier shaft 121 is provided with a communicating oil collecting cavity 124 and a first oil guiding hole 125. The oil collecting cavity 124 is located at the center of the planet carrier shaft 121, and is preferably coaxial with the planet carrier shaft 121. The planet wheel shaft 123 is provided with a second oil guiding hole 126, and the outlet of the second oil guiding hole 126 faces the planet wheel bearing 171 of the planet set 100. The connecting plate 122 is provided with an oil guiding member 20 outside. The first oil guiding hole 125, the gap between the oil guiding member 20 and the connecting plate 122, and the second oil guiding hole 126 are sequentially communicated to form a lubricating channel 160. The oil guiding member 20 is riveted with the planet carrier 120, and the oil guiding member 20 guides the lubricating oil in the oil collecting cavity 124, which is thrown out of the first oil guiding hole 125 under the centrifugal force, to the second oil guiding hole 126.

[0097] In the embodiment, the planet carrier shaft 121 and the sun wheel shaft 110 are provided with an intermediate bearing 174. The intermediate bearing 174 is a thrust bearing, which can bear a large axial force. One end of the sun wheel shaft 110 abuts against the planet carrier shaft 121 through the thrust bearing. The thrust bearing can meet the working requirement that there is a speed difference between the planet carrier 120 and the sun wheel shaft 110 under certain working conditions of the planet set 100. The intermediate bearing 174 is specifically located at the end of the sun wheel shaft 110. In some embodiments, a concave bearing mounting groove 113 can be arranged at the end of the sun wheel shaft 110. The bearing mounting groove 113 is communicated with the first hollow cavity 111, so that the internal gap of the intermediate bearing 174 is communicated with the first hollow cavity 111, and the lubricating oil in the first hollow cavity 111 can enter the intermediate bearing 174.

[0098] The second oil guiding hole 126 can be a channel extending radially and / or axially along the planet wheel shaft 123, or can be a channel extending circumferentially along the planet wheel shaft 123, that is, the second oil guiding hole 126 can be an axial straight channel, a radial straight channel, an inclined straight channel, a curved channel, etc., which is not limited in the application. Specifically, see Figure 5In this embodiment, the second oil guide hole 126 includes an axial oil guide hole 1261 extending along the planetary gear shaft 123 in the axial direction and at least one radial oil guide hole 1262 extending along the planetary gear shaft 123 in the radial direction, and the outlet of the radial oil guide hole 1262 constitutes the outlet of the lubricating passage 160. The number of radial oil guide holes 1262 depends on the size of the planetary gear bearing 171, and is usually two or more. The outlets of the two or more radial oil guide holes 1262 are spaced apart and evenly distributed along the circumferential surface of the planetary gear shaft 123. For example, the second oil guide hole 126 includes an axial oil guide hole 1261 extending along the planetary gear shaft 123 in the axial direction and four radial oil guide holes 1262 extending along the planetary gear shaft 123 in the radial direction, and the four radial oil guide holes 1262 are distributed at an angle of 90° with respect to each other, so as to ensure that the oil reaches the planetary gear bearing 171 and avoid sintering of the entire planetary gear set 100 due to insufficient lubrication of the planetary gear bearing 171. In some embodiments, the inlet of the axial oil guide hole 1261 is provided with a flared portion, preferably a circular flared portion, to reduce the flow resistance. In the axial direction of the planetary gear shaft 123, the diameter of the flared portion gradually increases from the middle to the end, so as to facilitate the entry of lubricating oil into the axial oil guide hole 1261.

[0099] In some embodiments, the first planetary carrier bearing 172 is mounted on the planetary carrier 120 and is arranged in the lubricating passage 160. The inner space of the first planetary carrier bearing 172 is in communication with the lubricating passage 160, so as to allow the lubricating oil to flow through. Figure 5 The first planetary carrier bearing 172 is mounted on the planetary carrier shaft 121 and is close to the connecting plate 122 of the planetary carrier 120. The first planetary carrier bearing 172 is a thrust bearing. The loose ring of the thrust bearing is in contact with the connecting plate 122, and the tight ring of the thrust bearing is connected and / or in contact with an external fixed member (for example, a housing assembly 300 for mounting the planetary gear set 100), so as to stabilize the planetary gear set in the axial direction. A passage for the lubricating oil to flow through is formed between the loose ring and the tight ring, and the lubricating oil flowing through the passage can also lubricate the rollers of the thrust bearing. Of course, in other embodiments, the first planetary carrier bearing 172 can also be arranged at other positions of the planetary carrier 120 and be completely separated from the lubricating passage 160, so as to avoid flow resistance in the internal structure of the first planetary carrier bearing 172.

[0100] In some embodiments, in order to improve the rotation stability of the planet carrier 120, a second planet carrier bearing 173 is also installed on the planet carrier shaft 121, which is a needle bearing, for example, and the planet carrier 120 is installed in the housing through the second planet carrier bearing 173. The second planet carrier bearing 173 also needs to be lubricated during operation, and for this purpose, the planet carrier shaft 121 is provided with a third oil guide hole 127 that communicates with the oil collecting cavity 124, and the outlet of the third oil guide hole 127 is directed towards the second planet carrier bearing 173. In general, the oil collecting cavity 124 is required to be able to accommodate the end of the near-planet row 100 of the oil guide pipe 10, and to store a certain amount of oil to be delivered to the third oil guide hole 127. Considering that the lubricating oil required by the second planet carrier bearing 173 is less than that of the planet wheel bearing 171, in order to ensure sufficient oil supply for the planet wheel bearing 171, in some embodiments, the oil collecting cavity 124 is in the form of a stepped hole, with a large hole section 1241 for accommodating the end of the near-planet row 100 of the oil guide pipe 10, and a small hole section 1242 that communicates with the third oil guide hole 127.

[0101] Due to the axial manufacturing and machining errors of the planet carrier 120, the sun shaft 110 and the like of the planet row 100, there is usually a certain gap between the sun shaft 110 and the planet carrier 120, and in some extreme cases, the lubricating oil flowing into this part will leak out in large quantities through the gap. Referring to Figure 4 and Figure 5 In order to solve the above problems, in the present embodiment, the sun shaft 110 is embedded with an oil guide pipe 10, which is installed through the sun shaft 110 inside the planet row 100, specifically through the first hollow cavity 111, and the near-planet row 100 end of the oil guide pipe 10 extends into the oil collecting cavity 124, so as to guide the oil in the sun shaft 110 into the oil collecting cavity 124 of the planet carrier. By providing the oil guide pipe 10, in the case of a relatively long axial oil guide channel, the oil guide pipe 10 is used to transfer the oil product from the lubricating oil inlet at the far-planet row 100 end to the planet carrier 120 of the planet row 100, which can avoid the situation that the oil is thrown out by the centrifugal force formed by the high-speed rotation of the sun shaft 110 and cannot reach the planet row 100, and the near-planet row end of the oil guide pipe 10 extends into the oil collecting cavity 124, which can reduce the leakage amount of lubricating oil at the gap between the sun shaft 110 and the planet carrier 120. The lubricating oil flows in the lubricating channel 160 and finally flows to the planet wheel bearing 171, lubricates the bearings of each planet wheel 140, ensures sufficient oil amount of the bearings, and avoids the safety problem of the entire vehicle caused by the ablation of the entire planet row 100.

[0102] The oil guide pipe 10 is provided with a plurality of oil outlet holes 11 distributed along the axial direction and / or radial direction of the oil guide pipe 10. Along the axial direction of the oil guide pipe, the oil outlet holes 11 are usually provided in multiple numbers, and the hole diameter and hole distance of each oil outlet hole 11 are the same. The oil outlet holes 11 located at the same axial position can also be provided in multiple numbers, and the multiple oil outlet holes 11 located at the same axial position are distributed along the circumferential direction, so that the oil can flow uniformly into the first hollow cavity 111 of the sun gear shaft 110. The oil outlet hole 11 can also be additionally provided at the axial position of the oil guide pipe 10 corresponding to the mounting position of the bearing.

[0103] In some embodiments, the distal planetary row 100 end of the oil guide pipe 10 is provided with one or more oil outlets 12. Since the oil outlet 12 is provided on the pipe wall of the oil guide pipe 10, it can radially discharge oil, reduce resistance, and facilitate the entry of oil into the lubrication channel 160. The oil outlet 12 can be provided as a slot with an opening or a complete hole, for example, the oil outlet 12 can be a U-shaped slot or a circular hole. The number of oil outlets 12 is not limited in this application, for example, the number of oil outlets 12 is set to 3, and the shapes of the 3 oil outlets 12 can be the same or different.

[0104] Since the inner diameter of the first hollow cavity 111 is larger than the outer diameter of the oil guide pipe 10, in order to ensure that the oil guide pipe 10 is stably installed in the first hollow cavity 111, in some embodiments, at least one bushing 30 is sleeved on the oil guide pipe 10, and the bushing 30 fills the gap between the oil guide pipe 10 and the cavity wall of the first hollow cavity 111. The bushing 30 supports the oil guide pipe 10, and the material of the bushing 30 is copper or composite plastic.

[0105] The sun gear shaft 110 of the engine input shaft assembly 610 is rotationally connected to the rotor 621 of the generator 620, see Figure 4 In some embodiments, the rotor 621 of the generator 620 is provided with a second hollow cavity 622 extending along the axial direction, the second hollow cavity 622 and the first hollow cavity 111 are communicated, the rotor of the generator is coaxially arranged with the planetary row 100, the lubricating oil introduced by the oil inlet channel 303 of the housing assembly 300 is introduced into the first hollow cavity 111 of the planetary row 100 through the second hollow cavity 622, the oil guide pipe 10 of the planetary row lubrication structure is installed in the second hollow cavity 622 and the first hollow cavity 111, the distal planetary row 100 end of the oil guide pipe 10 is directly connected and communicated with the oil inlet channel 303 of the housing assembly 300, and the proximal planetary row 100 end of the oil guide pipe 10 is directly connected and communicated with the oil collecting cavity 124 of the planet carrier 120. By connecting the rotor of the generator 620 with the internal oil circuit of the planetary row 100, the rotor of the generator acts as a pipeline for lubricating oil, the lubrication system structure is simplified, and the integration and vehicle mounting of the hybrid electric drive system 1000 are improved.

[0106] Embodiment 2:

[0107] Based on the same inventive concept, the embodiment provides a hybrid electric drive system 1000, referring to Figures 8 to 10 The hybrid electric drive system 1000 comprises a housing assembly 300, a shift mechanism assembly 500 and the hybrid transmission mechanism assembly 600 of the above embodiment 1, and the shift mechanism assembly 500 and the hybrid transmission mechanism assembly 600 are both installed in the housing assembly 300. Specifically, the housing assembly 300 is provided with a shaft tooth cavity 302 and a motor cavity 301, the generator 620 and the drive motor 670 of the hybrid transmission mechanism assembly 600 are both installed in the motor cavity 301, and the shift mechanism assembly 500 and the engine input shaft assembly 610, the drive motor input shaft assembly 660, the ICE intermediate shaft assembly 630, the EV intermediate shaft assembly 650 and the differential shaft assembly 640 of the hybrid transmission mechanism assembly 600 are all installed in the shaft tooth cavity 302.

[0108] In order to facilitate the installation of the shift mechanism assembly 500 and the hybrid transmission mechanism assembly 600, the housing assembly 300 adopts a split structure, and the specific division manner is not limited in the application, for example, the housing assembly 300 can be divided by a horizontal plane to form an upper housing and a lower housing, or divided by a vertical plane to form a left housing, a middle housing and a right housing. Referring to Figure 8 The housing assembly 300 comprises a right housing 310, a left housing 320 and an end cover 330 connected in sequence, and the right housing 310 and the left housing 320 jointly enclose the shaft tooth cavity 302. The left housing 320 and the end cover 330 jointly enclose the motor cavity 303, and the generator 620 and the drive motor 670 are both located in the motor cavity 303.

[0109] Since there are many shafts in the engine input shaft assembly 610, the rotor 621 of the generator 620, the sun gear shaft 110 of the planetary gear set 100 and the inner ring gear shaft 200 all need to be installed and supported by bearings. In order to increase the bearing mounting holes, in the embodiment, the left housing 320 is provided with an intermediate plate 321, and the intermediate plate 321 is in the form of a cover and is fixedly connected with the left housing 320 by threaded fasteners or welding. The intermediate plate 321 is provided with a ball bearing 179 for supporting the rotor 621 of the generator 620, as shown in Figure 4 In order to further improve the integration, the engaging teeth 42 of the second actuator S2 are fixedly connected with the intermediate plate 321, and specifically, the engaging teeth 42 of the second actuator S2 can be directly machined on the intermediate plate 321. In some embodiments, the engaging teeth 42 of the second actuator S2 can also be welded or interference press-fitted on the intermediate plate 321.

[0110] Referring to Figure 11The intermediate plate 321 is provided on the left casing 320, the intermediate plate 321 can set the bearing, and a mounting space is formed between the intermediate plate 321 and the left casing 320, the shift fork mounting position can be set between the intermediate plate 321 and the left casing 320, and the shift fork can be installed into the shift fork mounting position through the avoiding area 3212 on the intermediate plate 321, so that the installation of the shift fork is more convenient. Further, the bearing hole 3211 is set on the intermediate plate 321 for setting the bearing of the rotor of the generator 620, and the number of the bearing mounting holes of the left casing 320 as a whole is increased. Specifically, the rotor 621 of the generator 620 is supported on the intermediate plate 321 and the end cover 330 through two bearings, and the planet carrier shaft 121 of the planetary gear set 100 is supported on the right casing 310 through the first planet carrier bearing 172 and the second planet carrier bearing 173.

[0111] In some embodiments, the bottom of the left casing 320 forms an oil pan, and the lubricating oil after lubricating the hybrid power transmission mechanism assembly 600 falls into the oil pan. The end cover 330 is provided with an oil inlet channel 303, and the oil inlet channel 303 is in communication with the second hollow cavity 622 of the rotor 621 of the generator 620. The lubricating oil is provided with pumping power by an external oil pump, so that the lubricating oil circulates in the oil pan, the oil inlet channel 303, the oil guide pipe 10 (or the second hollow cavity 622 and the first hollow cavity 111), and the lubricating channel 160.

[0112] The hybrid electric drive system 1000 further comprises a controller assembly 400, which is used to control the operation of the motor and the shift mechanism assembly 500. Of course, the controller assembly 400 can also control the operation of the oil pump and some sensors (temperature sensors, pressure sensors, etc.) and other electronic devices provided in the hybrid electric drive system 1000. The controller assembly 400 can be provided separately from the casing assembly 300 and connected by wires. See Figure 8 In some embodiments, the controller assembly 400 is mounted on the casing assembly 300, and the controller assembly 400 is provided with a control board, a drive board and IGBTs for controlling the generator 620 and the drive motor 670. The controller assembly 400 has three output copper bars for electrical connection with the three-phase input copper bars of the generator 620 and the drive motor 670. The controller assembly 400 also has a low-voltage wire harness for connecting low-voltage devices (sensors, pumps, etc.) on or in the casing assembly 300. The specific structure of the controller assembly 400 can refer to the related disclosures of the prior art, which is not limited in the present application.

[0113] Embodiment 3:

[0114] Based on the same inventive concept, the embodiment provides a vehicle comprising the hybrid electric drive system 1000 of the above-mentioned embodiment 3, that is, the vehicle is a hybrid vehicle powered by an engine and an electric motor. Since the vehicle is configured with the hybrid electric drive system 1000 of the above-mentioned embodiment 3, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiment 3, and the hybrid electric drive system 1000 has high integration and small size, and can be carried in the engine compartment of different vehicle models. The other unexplained structures of the vehicle can refer to the related disclosures of the prior art, and will not be described here.

[0115] Although the preferred embodiments of the present application have been described, those skilled in the art who are familiar with the basic inventive concept can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0116] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A hybrid power transmission mechanism assembly, characterized in that: This includes the engine input shaft assembly, generator, ICE intermediate shaft assembly, differential shaft assembly, EV intermediate shaft assembly, drive motor input shaft assembly, and drive motor, all connected by a transmission. The engine input shaft assembly is coaxially arranged with the generator, and the drive motor input shaft assembly is coaxially arranged with the drive motor; the generator and the drive motor are located on the same side; the mounting height of the engine input shaft assembly is located between the drive motor and the differential shaft assembly, and the projection of the engine input shaft assembly on the vertical plane overlaps with the projections of the drive motor and the differential shaft assembly on the vertical plane. The engine input shaft assembly includes a planetary gear set, at least one actuator, at least one support bearing, at least one gear shifting gear, and an internal gear ring shaft. The internal gear ring shaft is sleeved on the planetary gear set and is drive-connected to the internal gear ring of the planetary gear set. The at least one actuator, the at least one support bearing, and the at least one gear shifting gear are all mounted on the internal gear ring shaft. One of the sun gear shaft and the planet carrier shaft of the planetary gear set is connected to the engine, and the other is drive-connected to the generator. The internal gear ring shaft is sleeved on the other of the sun gear shaft and the planet carrier shaft of the planetary gear set. The gear shifting of the engine is achieved through the engine input shaft assembly, and the torque of the engine input shaft assembly is transmitted to the EV intermediate shaft assembly and the ICE intermediate shaft assembly by the gear shifting gear.

2. The hybrid power transmission assembly as described in claim 1, characterized in that: The axis of the EV intermediate shaft assembly is located in the triangular region enclosed by the axes of the engine input shaft assembly, the drive motor, and the differential shaft assembly; the axis of the ICE intermediate shaft assembly has the lowest height.

3. The hybrid power transmission assembly as described in claim 2, characterized in that: The EV intermediate shaft assembly includes an EV intermediate shaft and a first EV intermediate gear and a second EV intermediate gear mounted on the EV intermediate shaft. The EV intermediate shaft assembly is connected to the engine input shaft assembly and the drive motor input shaft assembly via the first EV intermediate gear, and is connected to the differential shaft assembly via the second EV intermediate gear.

4. The hybrid power transmission assembly as described in claim 2, characterized in that: The ICE intermediate shaft assembly includes an ICE intermediate shaft and a first ICE intermediate gear and a second ICE intermediate gear mounted on the ICE intermediate shaft; the ICE intermediate shaft assembly is driven to the engine input shaft assembly through the first ICE intermediate gear; the ICE intermediate shaft assembly is driven to the differential shaft assembly through the second ICE intermediate gear.

5. The hybrid power transmission assembly as described in any one of claims 1-4, characterized in that: The internal gear ring shaft is mounted via a support bearing; the internal gear ring shaft includes: A bushing portion is used to be fitted onto the sun gear shaft or planet carrier shaft of the planetary set, and the bushing portion is provided with at least one first mounting position for mounting the actuator; The cover is connected to the bushing and is used for drive connection with the internal gear ring of the planetary gear set; The cover portion and / or the bushing portion are provided with at least one mounting position for mounting the support bearing; the cover portion and / or the bushing portion are provided with at least one second mounting position for mounting the gear.

6. The hybrid power transmission assembly as described in claim 5, characterized in that: The cover includes a toothed sleeve and a baffle, wherein the inner ring of the baffle is connected to the bushing and the outer ring is connected to the toothed sleeve.

7. The hybrid power transmission assembly as described in claim 6, characterized in that: The gear sleeve and the internal gear ring are an integral structure or connected by a key; the bushing, the baffle, and the gear sleeve are an integral structure.

8. The hybrid power transmission assembly as described in claim 6, characterized in that: Both the gear sleeve portion and the bushing portion are provided with the assembly position; the assembly position of the gear sleeve portion is the inner wall of the hole, and the assembly position of the bushing portion is provided with a bushing for installing the support bearing; A limiting structure for axially limiting the support bearing is provided between the assembly position of the gear sleeve and the mounting position of the internal gear ring.

9. The hybrid power transmission assembly as described in claim 5, characterized in that: The bushing portion and / or the cover portion are provided with at least one through oil guide hole; the outer surface of the bushing portion is provided with an oil guide groove communicating with the oil guide hole.

10. The hybrid power transmission assembly as described in claim 5, characterized in that: The at least one actuator includes a first actuator and a second actuator; the at least one support bearing includes a first support bearing and a second support bearing; the at least one gear includes a first gear and a second gear. The first mounting position, the assembly position, and the second mounting position are each provided in twos; the two first mounting positions are distributed at both ends of the bushing portion; the two assembly positions and the two second mounting positions are respectively provided on the bushing portion and the cover portion.

11. The hybrid power transmission assembly as described in claim 10, characterized in that: The first actuator and the second actuator are distributed at both ends of the bushing portion; the first support bearing is disposed in the inner hole of the cover portion, and the second support bearing is disposed between the first actuator and the second actuator through the bushing; the first gear is loosely sleeved on the cover portion through the bearing, and the second gear is loosely sleeved on the bushing portion through the bearing and is located between the first actuator and the second support bearing; The engine input shaft assembly is connected to the EV intermediate shaft assembly via the first gear; the engine input shaft assembly is connected to the ICE intermediate shaft assembly via the second gear.

12. The hybrid power transmission assembly as described in claim 11, characterized in that: The first gear includes a gear ring portion and a connecting portion. The gear ring portion is loosely fitted onto the cover portion via a bearing. The connecting portion is fixedly connected to the engagement tooth on one side of the first actuator. The gear hub of the first actuator is drivenly connected to the first mounting position. The engagement tooth on the other side of the first actuator is fixedly connected to the second gear.

13. The hybrid power transmission assembly as described in claim 12, characterized in that: The gear hub of the second actuator is driven to the sun gear shaft of the planetary gear set, the engagement tooth on one side of the second actuator is driven to the bushing part, and the engagement tooth on the other side of the second actuator is fixedly connected to the housing assembly.

14. The hybrid power transmission assembly as described in any one of claims 1-4, characterized in that: The planetary gear set is provided with a lubrication channel, the outlet of which faces the planetary gear bearing of the planetary gear set; the sun gear shaft of the planetary gear set is provided with a first hollow cavity that runs through the axis, and the planet carrier of the planetary gear set is provided with an oil collection chamber; the rotor of the generator is provided with a second hollow cavity that runs through the axis, and the second hollow cavity, the first hollow cavity, the oil collection chamber and the lubrication channel are connected in sequence.

15. The hybrid power transmission assembly as described in claim 14, characterized in that: The planetary carrier includes a planetary carrier shaft, a connecting plate, and a planetary gear shaft connected in sequence. The planetary carrier shaft is provided with the oil collection chamber and a first oil guide hole that are connected in series, and the planetary gear shaft is provided with a second oil guide hole. An oil guide is provided on the outer side of the connecting plate; the first oil guide hole, the gap between the oil guide and the connecting plate, and the second oil guide hole are connected in sequence to form the lubrication channel.

16. The hybrid power transmission assembly as described in claim 15, characterized in that: The input shaft assembly also includes an oil guide pipe, which is installed in the second hollow cavity and the first hollow cavity, with the near planetary gear end of the oil guide pipe extending into the oil collection cavity.

17. A hybrid electric drive system, characterized in that, include: The housing assembly includes a gear cavity and a motor cavity; The hybrid transmission assembly according to any one of claims 1-16, wherein the engine input shaft assembly, the drive motor input shaft assembly, the ICE intermediate shaft assembly, the EV intermediate shaft assembly and the differential shaft assembly are all installed in the gear cavity, and the generator and the drive motor are all installed in the motor cavity; The gear shifting mechanism assembly is installed in the gear cavity and acts on the actuator.

18. The hybrid electric drive system as described in claim 17, characterized in that: The housing assembly includes a right housing, a left housing, and an end cover connected in sequence. The right housing and the left housing together form the shaft gear cavity, and the left housing and the end cover together form the motor cavity. The end cover is provided with an oil inlet channel.

19. The hybrid electric drive system as described in claim 17 or 18, characterized in that: The hybrid electric drive system also includes a controller assembly mounted on the housing assembly, wherein the three output busbars of the controller assembly are electrically connected to the three input busbars of the generator and the drive motor.

20. A vehicle, characterized in that: The hybrid electric drive system includes any one of claims 17-19.

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