Hybrid transmission assembly and vehicle

Abstract

The utility model discloses a hybrid transmission assembly and a vehicle. The hybrid transmission assembly comprises a shell assembly, a speed change assembly and a lubricating assembly. The lubricating assembly comprises a first lubricating assembly, a second lubricating assembly and a lubricating liquid driving assembly, the first lubricating assembly is arranged in the gear cavity and provided with a branch oil way and a plurality of oil spraying openings, the first lubricating assembly is in lap joint with the front shell and the middle shell, and an oil way in the middle shell is communicated so that cooling lubricating oil can be sprayed to a gear set and a bearing in the gear cavity from the high position; the second lubricating assembly comprises a communicating pipeline; the communicating pipeline comprises a middle shell inner oil duct integrally formed with the middle shell and a rear shell inner oil duct integrally formed with the rear shell; the generator and the motor are provided with a stator outer oil duct and a rotor inner oil duct; the middle shell inner oil duct is communicated with the stator outer oil duct, and the rear shell inner oil duct is communicated with the rotor inner oil duct. The lubricating liquid driving assembly adjusts the conveying flow of the cooling lubricating liquid according to the real-time temperature detected by the temperature sensing device.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile gearboxes, in particular to a hybrid transmission assembly and a vehicle. BACKGROUND

[0002] With the rapid development of new energy vehicles, hybrid transmissions are also developing towards high power, high speed and low noise. The maximum speed of the motor of a hybrid transmission can reach 20000rpm+, in order to match the high speed and high power requirements of the hybrid transmission, the speed of the motor, gear and bearing also needs to be designed and used at high speed, so that the cooling and lubrication structure of the hybrid transmission becomes particularly critical.

[0003] Most of the current hybrid transmissions are 5-axis / 6-axis structures, which also leads to the arrangement of high-speed gear shafts and motors at the highest position. However, the existing hybrid transmission gear bearing lubrication and motor cooling methods have deficiencies, including the use of gear oil splashing lubrication, oil collecting box and oil hole lubrication of the shell, which cannot timely deliver oil to multiple gear pairs. The cooling of the motor and generator, which are critical parts of the hybrid transmission, is even more important. The commonly used water cooling method conducts heat exchange with the shell, and the motor cooling efficiency is slow. The oil cooling adopts a bent pipe spraying method, which is prone to cause uneven cooling of the motor. Therefore, the continuous high temperature problem may cause damage or even scrap of the gear shaft and motor in the hybrid transmission. CONTENT OF THE UTILITY MODEL

[0004] The application provides a hybrid transmission assembly and a vehicle. Oil channels inside a shell are combined to supply oil to a spraying pipeline in a gear cavity and double motor stator rotors in a motor cavity. A spraying multi-branch pipeline is applied to actively spray oil to lubricate and cool high-position gear shafts and bearings in the gear cavity, which can cool the motor, gear and bearing.

[0005] The application provides a hybrid transmission assembly, which comprises a shell assembly, a transmission assembly and a lubrication assembly.

[0006] The shell assembly comprises a front shell, a middle shell and a rear shell. The front shell and the middle shell enclose a gear cavity accommodating the transmission assembly. The gear cavity accommodates a motor gear set, a generator gear set, an intermediate shaft gear set and a differential at the bottom of the transmission assembly.

[0007] The rear shell and the middle shell enclose a motor cavity. The middle shell is provided with mounting holes for mounting a motor and a generator. The motor and the generator are provided with temperature sensing devices.

[0008] The lubrication assembly comprises a first lubrication assembly, a second lubrication assembly and a lubricating liquid driving assembly.

[0009] The first lubricating assembly is arranged in the gear cavity and has branch oil paths and a plurality of oil injection ports, and the first lubricating assembly is overlapped with the front shell and the middle shell;

[0010] The second lubricating assembly includes a communication pipeline, the communication pipeline includes an inner oil channel of the middle shell integrally formed with the middle shell and an inner oil channel of the rear shell integrally formed with the rear shell, and the first lubricating assembly communicates with the inner oil channel of the middle shell and sprays cooling lubricating oil from a high position to the gear set and the bearing in the gear cavity.

[0011] The generator is provided with a generator stator outer oil channel and a generator rotor inner oil channel, the motor is provided with a motor stator outer oil channel and a motor rotor inner oil channel, and the inner oil channel of the middle shell further communicates with the generator stator outer oil channel and the motor stator outer oil channel respectively, and the inner oil channel of the rear shell further communicates with the generator rotor inner oil channel and the motor rotor inner oil channel respectively.

[0012] The lubricating liquid driving assembly adjusts the delivery flow of the cooling lubricating oil according to the real-time temperature detected by the temperature sensing device.

[0013] In an embodiment, the first lubricating assembly includes an oil spraying pipeline, the oil spraying pipeline includes an oil inlet pipe and at least two oil outlet pipes in communication with the oil inlet pipe; one of the oil outlet pipes is used for spraying the motor gear set and the intermediate shaft gear set, and the other of the oil outlet pipes is used for spraying the generator gear set.

[0014] In an embodiment, the front shell is provided with first mounting positions of the two oil outlet pipes, the middle shell is provided with second mounting positions of the two oil outlet pipes, and the two ends of the oil outlet pipes are overlapped and arranged in the corresponding first mounting positions and second mounting positions respectively; the two oil outlet pipes are parallel to the oil inlet pipe and are located higher than the oil inlet pipe.

[0015] In an embodiment, the inner oil channel of the middle shell includes a first pipeline and a third pipeline, the inner oil channel of the rear shell includes a second pipeline, the first pipeline, the second pipeline and the third pipeline are sequentially communicated to form a main part of the communication pipeline, and the oil inlet pipe of the first lubricating assembly is in communication with the communication pipeline and can deliver cooling lubricating oil.

[0016] In an embodiment, the inner oil channel of the rear shell further includes a fourth pipeline and a fifth pipeline, the fourth pipeline and the fifth pipeline are connected after being merged with the third pipeline, the fourth pipeline and the fifth pipeline are provided with spray holes, the fourth pipeline can spray cooling lubricating oil to the motor rotor inner oil channel, and the fifth pipeline can spray cooling lubricating oil to the generator rotor inner oil channel.

[0017] In an embodiment, the third pipeline is provided with a first branch and a second branch, the first branch is communicated with the motor stator outer oil channel, and the second branch is communicated with the generator stator outer oil channel.

[0018] In an embodiment, the motor stator outer oil channel and the generator stator outer oil channel are both meandering grooves formed by recesses and protrusions on the outer circumferential surface of the stator, the stator of the generator and the motor is embedded in the mounting hole, and the hole wall of the mounting hole cooperates with the motor stator outer oil channel and the generator stator outer oil channel to form a closed oil conveying space.

[0019] In an embodiment, the motor rotor inner oil channel and the generator rotor inner oil channel are both circulation pipeline structures with four inlets and one outlet.

[0020] In an embodiment, the lubricating liquid driving assembly comprises an oil suction filter, an electronic oil pump and an oil cooler connected in sequence, and the oil suction filter, the electronic oil pump and the oil cooler are connected to form an oil inlet conveying main pipeline.

[0021] The application also provides a vehicle comprising the hybrid transmission assembly.

[0022] After the above technical solution is adopted, the beneficial effects are:

[0023] The application provides a hybrid transmission assembly and a vehicle, which comprise a shell assembly, a transmission assembly and a lubricating assembly; the shell assembly comprises a front shell, a middle shell and a rear shell, the front shell and the middle shell are closed to form a gear cavity for accommodating the transmission assembly, the gear cavity is provided with a motor gear set, a generator gear set, an intermediate shaft gear set and a differential at the bottom of the transmission assembly; the lubricating assembly comprises a first lubricating assembly, a second lubricating assembly and a lubricating liquid driving assembly; the first lubricating assembly is arranged in the gear cavity, the first lubricating assembly is overlapped with the front shell and the middle shell, has a branch oil circuit and a plurality of oil injection ports, the first lubricating assembly not only has a one-in-two-out oil pipe structure but also is located at a high position in the gear cavity, so that the first lubricating assembly can actively spray oil to lubricate and cool the gear shaft and bearing at a high position. The second lubricating assembly comprises a communication pipeline arranged inside the middle shell and the rear shell, the communication pipeline can convey cooling oil to the motor stator and rotor oil channels to cool the motor rotor and stator, and the lubricating liquid driving assembly can adjust the conveying flow of the cooling lubricating oil according to the temperature detected by the temperature sensing device, so as to avoid insufficient or excessive cooling lubrication of the hybrid transmission and improve the thermal management efficiency of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0025] Figure 1 It is a schematic view of a lubricating component structure of a hybrid transmission assembly.

[0026] Figure 2 It is a schematic view of a housing structure of a hybrid transmission assembly.

[0027] Figure 3 It is a schematic view of a front housing structure of a hybrid transmission assembly.

[0028] Figure 4 It is a schematic view of a transmission component of a hybrid transmission assembly.

[0029] Figure 5 It is a schematic view of an oil spraying pipeline of a hybrid transmission assembly.

[0030] Figure 6 It is a structural schematic view of a second lubricating component of a hybrid transmission assembly.

[0031] Figure 7 It is a structural schematic view of a motor cavity of a hybrid transmission assembly.

[0032] Figure 8 It is a schematic view of a middle housing mechanism of a hybrid transmission assembly.

[0033] Figure 9 It is a partial schematic view of a first oil path and a second oil path of a hybrid transmission assembly.

[0034] Figure 10 It is a partial schematic view of a third oil path and a fourth oil path of a hybrid transmission assembly.

[0035] Figure 11 It is a sectional view of a rotor shaft inner oil channel structure of a hybrid transmission assembly.

[0036] Reference signs:

[0037] 200 - a hybrid transmission assembly;

[0038] 11 - a front housing; 111 - a first pipeline mounting position;

[0039] 12 - a middle housing; 122 - a first oil path; 123 - a second oil path; 125 - a third oil path; 126 - a fourth oil path; 127 - a second pipeline mounting position;

[0040] 13 - rear housing;

[0041] 15 - gear chamber;

[0042] 16 - motor chamber; 161 - motor mounting position; 162 - generator mounting position;

[0043] 21 - motor gear set, 211 - motor gear shaft, 212 - motor gear shaft front bearing, 213 - motor gear shaft rear bearing, 215 - first conductive ring, 216 - motor front bearing;

[0044] 22 - generator gear set, 221 - generator gear shaft, 222 - generator gear shaft front bearing, 223 - generator gear shaft rear bearing, 225 - second conductive ring; 226 - generator front bearing;

[0045] 23 - intermediate shaft gear set, 231 - intermediate gear shaft, 232 - intermediate gear shaft front bearing, 233 - intermediate gear shaft rear bearing;

[0046] 25 - differential;

[0047] 26 - input shaft gear set, 261 - input shaft gear shaft, 262 - input shaft front bearing, 263 - input shaft rear bearing;

[0048] 27 - clutch shaft gear set, 271 - clutch shaft, 272 - clutch shaft front bearing, 273 - clutch shaft rear bearing;

[0049] 30 - first lubrication assembly;

[0050] 31 - oil spraying pipeline, 311 - oil inlet pipe, 3111 - sealing ring, 312 - oil outlet pipe, 3121 - first oil outlet pipe, 31211 - first spraying port, 31212 - second spraying port, 31213 - third spraying port, 31215 - sixth spraying port, 3122 - second oil outlet pipe, 31221 - fourth spraying port, 31222 - fifth spraying port, 31223 - seventh spraying port, 3123 - clamping part, 313 - first connecting bridge pipe, 315 - second connecting bridge pipe, 316 - reinforcing rib.

[0051] 50 - second lubrication assembly;

[0052] 51 - communication pipeline;

[0053] 511 - middle housing inner oil channel, 5111 - first pipeline, 5112 - third pipeline, 51121 - first branch, 51122 - second branch, 5113 - oil return pipeline;

[0054] 512 - inner oil passage of rear housing; 5121 - second pipeline; 5122 - fourth pipeline; 51221 - fourth pipeline spray port; 5123 - fifth pipeline; 51231 - fifth pipeline spray port;

[0055] 522 - outer oil passage of motor stator; 5221 - oil outlet of motor stator oil passage; 523 - inner oil passage of motor rotor; 5231 - oil inlet of motor rotor; 5232 - oil outlet of motor rotor;

[0056] 525 - outer oil passage of generator stator; 5251 - oil outlet of generator stator oil passage; 526 - inner oil passage of generator rotor; 5261 - oil inlet of generator rotor; 5262 - oil outlet of generator rotor;

[0057] 60 - lubricating liquid driving assembly;

[0058] 61 - oil suction filter; 62 - electronic oil pump; 63 - oil cooler. DETAILED DESCRIPTION

[0059] In order to better understand the technical solutions of the present application, the embodiments of the present application are described in detail below in combination with the drawings.

[0060] It should be clear that the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0061] The terms used in the embodiments of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0062] It should be understood that the term "and / or" used herein is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0063] Due to the rapid development of new energy vehicles, the shortcomings of insufficient lubrication and cooling of the gears and bearings of the hybrid transmission need to be solved. The technical solutions provided by the present application can achieve active lubrication of multiple high gears and bearings in the gear cavity, and can also achieve cooling of the motor stator and rotor, and the generator stator and rotor in the motor cavity, effectively improving the problem of insufficient cooling of the original structure.

[0064] The application provides a hybrid transmission assembly 200, Figure 1 A schematic view of a lubricating assembly structure of a hybrid transmission assembly, Figure 2 A schematic view of a housing structure of a hybrid transmission assembly, Figure 3 A schematic view of a front housing structure of a hybrid transmission assembly, as shown in Figure 1 , Figure 2 and Figure 3 , comprising a housing assembly, a transmission assembly and a lubricating assembly;

[0065] The housing assembly comprises a front housing 11, a middle housing 12 and a rear housing 13, the front housing 11 and the middle housing 12 form a gear cavity 15 for accommodating the transmission assembly, the gear cavity 15 accommodates a motor gear set 21, a generator gear set 22, an intermediate shaft gear set 23 and a differential 25 at the bottom of the transmission assembly;

[0066] The rear housing 13 and the middle housing 12 form a motor cavity 16, the middle housing 12 is provided with mounting holes for mounting the motor and the generator; the motor and the generator are provided with temperature sensing devices;

[0067] The lubricating assembly comprises a first lubricating assembly 30, a second lubricating assembly 50 and a lubricating liquid driving assembly 60.

[0068] Figure 4 A schematic view of a transmission assembly of a hybrid transmission assembly, Figure 5 A schematic view of an oil spraying pipeline of a hybrid transmission assembly, please refer to Figure 4 and Figure 5 The first lubricating assembly 30 is arranged in the gear cavity 15 and has branch oil paths and a plurality of oil injection ports, and the first lubricating assembly 30 is overlapped with the front housing 11 and the middle housing 12;

[0069] Figure 6 A structural schematic view of a second lubricating assembly of a hybrid transmission assembly, Figure 7 A structural schematic view of a motor cavity of a hybrid transmission assembly, as shown in Figure 6 and Figure 7 The second lubricating assembly 50 comprises a communication pipeline 51; the communication pipeline 51 comprises a middle housing inner oil channel 511 integrally formed with the middle housing 12 and a rear housing inner oil channel 512 integrally formed with the rear housing, and the first lubricating assembly 30 is communicated with the middle housing inner oil channel 511 and can spray the cooling lubricating oil from a high position to the gear sets and bearings in the gear cavity 15.

[0070] The motor is provided with a motor stator outer oil channel 522 and a motor rotor inner oil channel 523, the generator is provided with a generator stator outer oil channel 525 and a generator rotor inner oil channel 526, and the middle shell inner oil channel 511 is in communication with the motor stator outer oil channel 522 and the generator stator outer oil channel 525 respectively, and the rear shell inner oil channel 512 is in communication with the motor rotor inner oil channel 523 and the generator rotor inner oil channel 526 respectively;

[0071] The lubricating liquid driving assembly 60 adjusts the delivery flow of the cooling lubricating oil according to the real-time temperature detected by the temperature sensing device.

[0072] From the above solution, it can be seen that the overall idea of solving the problem of insufficient cooling and lubrication of the hybrid transmission gear bearing and double motor is to realize oil supply to the spray pipeline in the gear cavity 15 and the double motor stator rotor in the motor cavity 16 through the oil channel combination inside the shell.

[0073] In order to make the technical solutions, objects and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments.

[0074] In some embodiments, as shown in Figure 2 The shell assembly includes a front shell 11, a middle shell 12 and a rear shell 13. The front shell 11 is a half-shell shape with a recessed area. The middle shell 12 is arranged between the front shell 11 and the rear shell 13, that is, the left and right sides of the middle shell 12 both have bearing mounting positions, which have important receiving functions. The rear shell 13 is also a half-shell shape and has a recessed area opposite to the recessed direction of the front shell 11. The front shell 11 and the middle shell 12 form a gear cavity 15 for accommodating a transmission assembly, and the rear shell 13 and the middle shell 12 form a motor cavity 16.

[0075] The front shell 11, the middle shell 12 and the rear shell 13 can be formed by metal die casting process or machining method, which is not limited. In addition, for easy understanding, the direction close to the front shell 11 is defined as front, the direction close to the rear shell 13 is defined as rear, and the direction of gravity is defined as up and down.

[0076] In some embodiments, as shown in Figure 2 and Figure 3 The gear cavity 15 contains a motor gear set 21, a generator gear set 22, an intermediate shaft gear set 23 and a differential 25 located at the bottom of the transmission assembly. In addition, the gear cavity 15 is also provided with an input shaft gear set 26 and a clutch shaft gear set 27, a total of six gear shafts.

[0077] The six gear shafts inside the gear cavity 15 are in V-shaped distribution from front to back. The generator gear set 22 is opposite to the motor gear set 21, wherein the motor gear set 21, the intermediate shaft gear set 23 and the differential 25 are sequentially arranged from top to bottom on the left side of the V-shaped distribution. The generator gear set 22, the input shaft gear set 26, the clutch shaft gear set 27 and the differential 25 are sequentially arranged from top to bottom on the right side of the V-shaped distribution. The two gear sets on the left side of the V-shaped distribution and the three gear sets on the right side of the V-shaped distribution converge at the differential 25 at the bottom of the V-shaped distribution, and the six gear shafts in V-shaped distribution are sequentially connected and can transmit power to each other.

[0078] Please refer to Figure 4 The motor gear set 21 is located at the first position from top to bottom on the left side of the V-shaped distribution, and includes the motor gear shaft 211, the motor gear shaft front bearing 212, the motor gear shaft rear bearing 213 and the motor front bearing 216. The first conductive ring 215 is arranged between the motor front bearing 216 and the motor gear shaft bearing.

[0079] The intermediate gear set 23 is located at the second position from top to bottom on the left side of the V-shaped distribution, and includes the intermediate gear shaft 231, the intermediate gear shaft front bearing 232 and the intermediate gear shaft rear bearing 233.

[0080] The differential 25 is located at the third position from top to bottom on the left side of the V-shaped distribution.

[0081] The intermediate gear shaft 231 is located between the motor gear shaft 211 and the differential 25, and the intermediate gear shaft 231 is engaged with the gears of the motor gear shaft 211 and the differential 25.

[0082] The generator gear set 22 is located at the first position from top to bottom on the right side of the V-shaped distribution, and includes the generator gear shaft 221, the generator gear shaft front bearing 222, the generator gear shaft rear bearing 223 and the generator front bearing 226. The second conductive ring 225 is arranged between the generator front bearing 226 and the generator gear shaft rear bearing 223.

[0083] The input shaft gear set 26 is located at the second position from top to bottom on the right side of the V-shaped distribution, and includes the input shaft gear shaft 261, the input shaft front bearing 262 and the input shaft rear bearing 263.

[0084] The clutch shaft gear set 27 is located at the third position from top to bottom on the right side of the V-shaped distribution, and includes the clutch shaft 271, the clutch shaft front bearing 272 and the clutch shaft rear bearing 273.

[0085] The input gear shaft 261 and the clutch gear shaft 271 are engaged and located between the gears of the generator gear shaft 221 and the differential 25 and engaged with the gears.

[0086] Therefore, the differential 25 is located at the bottom end of the gear cavity 15, the upper left corner of the gear cavity 15 is the motor gear set 21, the upper right corner is the generator gear set 22, and the generator gear set 22 is opposite to the motor gear set 21. In the working condition of a rotation speed of 20000 rpm or more, the gear sets at the upper left and right corners of the gear cavity 15 have a large cooling and lubricating demand and urgently need lubrication and heat dissipation. In the embodiment, the first lubricating assembly 30 in the gear cavity 15 can continuously supply cooling and lubricating oil.

[0087] In the above scheme, the hybrid transmission assembly with a six-axis structure design is compact in structure and convenient to install and maintain.

[0088] In some embodiments, as shown in Figure 7 , the motor cavity 16 is provided with a motor mounting position 161 and a generator mounting position 162 for mounting the motor and the generator. The motor mounting position 161 is arranged on the side of the middle shell 12 close to the rear shell 13 and corresponds to the motor gear shaft 211 of the gear cavity 15. The generator mounting position 162 is arranged on the side of the middle shell 12 close to the rear shell 13 and corresponds to the generator gear shaft 221 of the gear cavity 15.

[0089] The motor includes a motor stator and a motor rotor, and the generator includes a generator stator and a generator rotor. The axial length of the stator and the rotor of the motor is greater than the axial length of the stator and the rotor of the generator.

[0090] The lubricating assembly is the core part of the technical scheme of the present application. Please continue to refer to Figure 1 , which includes a first lubricating assembly 30, a second lubricating assembly 50, and a lubricating liquid driving assembly 60 combined into a complete cooling and lubricating oil system. The system can filter and drive the cooling oil to be delivered and distributed to the two lubricating assemblies to supply the gear shaft set in the gear cavity 15, the motor in the motor cavity 16, and the generator with appropriate cooling and lubricating oil, thereby ensuring stable operation of the transmission assembly.

[0091] In some embodiments, as shown in Figure 4 and Figure 5 , the first lubricating assembly 30 includes an oil spraying pipeline 31, which is a key part of the first lubricating assembly 30. The oil spraying pipeline 31 is located near the top of the gear cavity 15 and is located at the opening of the V-shaped distribution of the six-axis system of the transmission assembly, i.e., between the motor gear shaft 211 and the generator gear shaft 221, in a high and low position. In order to improve the delivery efficiency of the lubricating oil and shorten the oil delivery distance, the middle shell 12 is provided with an integrally formed inner oil channel 511 in the middle shell, which can quickly deliver the oil to the oil spraying pipeline 31 under the action of the oil pump.

[0092] The oil spraying pipeline 31 is a hollow pipe structure with branches, including an oil inlet pipe 311 and at least two oil outlet pipes 312 connected with the oil inlet pipe 311, wherein one of the oil outlet pipes 312 is used for spraying the motor gear set 21 and the intermediate shaft gear set 23, and the other oil outlet pipe 312 is used for spraying the generator gear set 22.

[0093] The oil inlet pipe 311 is connected with the oil channel 511 in the middle shell, and a sealing ring 3111 is arranged at the connection position to prevent oil leakage and noise caused by vibration friction.

[0094] As shown in Figure 4 , the oil inlet pipe 311 and the two oil outlet pipes 312 of the oil spraying pipeline 31 are arranged in parallel, with the oil inlet pipe 311 in the middle, the first oil outlet pipe 3121 on the left, and the second oil outlet pipe 3122 on the right. A first connecting bridge pipe 313 is arranged vertically between the first oil outlet pipe 3121 and the oil inlet pipe 311. A second connecting bridge pipe 315 is arranged vertically between the second oil outlet pipe 3122 and the oil inlet pipe 311.

[0095] In order to ensure the structural strength of the entire oil spraying pipeline 31, a reinforcing rib 316 is arranged at the vertical connection position between the oil inlet pipe 311 and the first oil outlet pipe 3121 and the second oil outlet pipe 3122, which connects the oil inlet pipe 311, the first connecting bridge pipe 313, the second connecting bridge pipe 315, the first oil outlet pipe 3121 and the second oil outlet pipe 3122 to form a complete and sealed oil conveying pipeline.

[0096] In some embodiments, as shown in Figure 4 and Figure 5 , the first oil outlet pipe 3121, the second oil outlet pipe 3122 and the oil inlet pipe 311 are arranged in parallel, and the three are not in the same plane. Among them, in the horizontal direction, the oil inlet pipe 311 is slightly lower than the first oil outlet pipe 3121 and the second oil outlet pipe 3122, and is close to the differential 25. The first oil outlet pipe 3121 and the second oil outlet pipe 3122 are located on both sides of the V-shaped opening of the six-axis system of the transmission assembly, the first oil outlet pipe 3121 is located above the motor gear set 21, and the second oil outlet pipe 3122 is located above the generator gear set 22. The first connecting bridge pipe 313 connected with the first oil outlet pipe 3121 and the second connecting bridge pipe 315 connected with the second oil outlet pipe 3122 are arranged at an obtuse angle with the oil inlet pipe 311 as the center node, and are in the form of flapping wings at a high position of the gear cavity 15, so that the cooling and lubricating oil can be sprayed at a high position, and the efficiency is higher. Moreover, the oil spraying pipeline 31 can adapt to the space layout in the hybrid box, and the overall structure is compact.

[0097] The oil liquid spraying pipeline 31 can be made of metal or engineering plastic, and can be integrally formed or welded and spliced. The hollow hole structure can be circular or other shapes, which are not limited.

[0098] In some other embodiments, the number and structure of the oil inlet pipe 311, the oil outlet pipe 312 and the connecting bridge pipe, including but not limited to the layout in the same plane, whether it is non-parallel or non-vertical, can be implemented, which is not limited here.

[0099] In order to strengthen the stability of the oil liquid spraying pipeline 31, avoid the noise generated by the vibration of the oil liquid spraying pipeline 31 during the high-speed running of the vehicle, Figure 8 For a schematic diagram of the middle shell mechanism of a hybrid transmission assembly, please refer to Figure 3 and Figure 8 The front shell 11 and the middle shell 12 are also provided with a plurality of mounting positions for supporting and fixing the oil liquid spraying pipeline 31. Specifically, the front shell 11 is provided with two first pipeline mounting positions 111, and the middle shell 12 is provided with two second pipeline mounting positions 127. The first pipeline mounting position 111 and the second pipeline mounting position 127 are both circular hole structures, which can be matched and connected with the oil outlet pipe 312. The two ends of the first oil outlet pipe 3121 and the second oil outlet pipe 3122 are respectively overlapped and arranged in the corresponding first pipeline mounting position 111 and the second pipeline mounting position 127.

[0100] In addition, in addition to the mounting position, in order to prevent the displacement or transverse movement of the oil liquid spraying pipeline 31, the two ends of the oil outlet pipe 312 are also provided with a clamping part 3123, which is a cylindrical stepped structure, used to limit the oil liquid spraying pipeline 31 mounted in the first pipeline mounting position 111 and the second pipeline mounting position 127 from moving between the front shell 11 and the middle shell 12.

[0101] The plurality of mounting positions and the shell can be formed at one time, which can be made by metal die casting or mechanical processing, which is not limited.

[0102] In the above scheme, the first lubricating assembly 30 is the oil liquid spraying pipeline 31, which has a branched structure, with oil inlet in the middle and oil outlet at both ends, and is connected across the front shell 11 and the middle shell 12 at the high position of the gear cavity 15. It can spray and cool the lubricating oil from a high position, and give full play to the cooling and lubrication of the gears and bearings at the high position of the gear cavity 15.

[0103] In order to improve the accuracy of the oil spraying direction, please continue to refer to Figure 4 and Figure 5The first oil outlet pipe 3121 is provided with a first spray port 31211 and a second spray port 31212 at one end near the front housing 11. The first spray port 31211 and the second spray port 31212 spray in different directions, with the first spray port 31211 directed toward the front bearing 212 of the motor gear shaft, and the second spray port 31212 directed toward the front bearing 232 of the intermediate gear shaft. In addition, a third spray port 31213 is provided in the middle of the first oil outlet pipe 3121, and the third spray port 31213 is directed toward the motor gear set 21. Because the oil spray line 31 is at a high position and combined with the directions of multiple spray ports, the sprayed oil can be directly sprayed toward the front bearing 212 of the motor gear shaft, the front bearing 232 of the intermediate gear shaft, and the motor gear set 21, providing sufficient cooling and lubrication to prevent high temperature risks.

[0104] In other embodiments, the second oil outlet pipe 3122 is provided with a fourth spray port 31221 and a fifth spray port 31222. The fourth spray port 31221 is located at the end of the second oil outlet pipe 3122 near the front housing 11 and faces the generator gear shaft front bearing 222. The fifth spray port 31222 is located in the middle of the second oil outlet pipe 3122 and faces the generator gear set 22. The oil sprayed from the fourth and fifth spray ports 31221 and 31222 can be directly sprayed onto the generator gear set front bearing and the generator gear set 22, providing sufficient cooling and lubrication to prevent the risk of high temperatures.

[0105] In the above solution, the application of 5 spray ports further refines the spray route and angle of the oil spray pipeline 31, providing sufficient spray cooling and lubrication for bearings and high-position gear shafts that are not easily sprayed.

[0106] In order to provide proper cooling and lubrication to the rear bearing of the gear shaft which is not easily sprayed with oil and is located at a higher position, Figure 9 A partial schematic diagram of a first oil circuit and a second oil circuit of a hybrid transmission assembly is shown in FIG. Figure 9 As shown, a first oil passage 122 is defined between the front bearing 216 of the motor and the first conductive ring 215 , a second oil passage 123 is defined between the rear bearing 213 of the motor gear shaft and the first conductive ring 215 , and a sixth spray port 31215 is defined at one end of the first oil outlet pipe 3121 near the middle shell 12 . The oil sprayed from the sixth spray port 31215 enters the first oil passage 122 and the second oil passage 123 respectively under the diversion effect of the conductive ring.

[0107] The first oil path 122 is arranged on the inner wall of the mounting hole of the motor front bearing 216, is a branch of the inner oil channel 511 of the middle shell, is in communication with the second mounting position of the first oil outlet pipe 3121 through a bend, and the first oil outlet pipe 3121 is provided with a sixth spray opening 31215 at the end close to the middle shell 12, so that the oil sprayed by the sixth spray opening 31215 can be introduced into the first oil path 122. The second oil path 123 is in communication with the first oil path 122 through a bend, that is, the second oil path 123, the first oil path 122 and the sixth spray opening 31215 form a Z-shaped flow channel, so that the oil can be introduced into the first oil path 122 and the second oil path 123 under the shunting action of the first conductive ring 215, and the motor front bearing 216 and the motor gear shaft rear bearing 213 can be cooled and lubricated.

[0108] In some embodiments, Figure 10 FIG. 3 is a partial schematic view of a third oil path and a fourth oil path of a hybrid transmission assembly, and Figure 10 As shown in FIG. 3, the third oil path 125 is arranged between the generator front bearing 226 and the slit of the second conductive ring 225, and the fourth oil path 126 is arranged between the generator gear shaft rear bearing 223 and the slit of the second conductive ring 225. The third oil path 125 and the fourth oil path 126 are arranged between the mounting hole of the generator front bearing 226 and the mounting hole of the generator gear shaft rear bearing 223 in the middle shell 12, and the second oil outlet pipe 3122 is provided with a seventh spray opening 31223 at the end close to the middle shell 12. Therefore, the oil sprayed by the seventh spray opening 31223 can be shunted to the third oil path 125 and the fourth oil path 126 through the slit of the second conductive ring 225, so that the generator front bearing 226 and the generator gear shaft rear bearing 223 can be fully cooled and lubricated, and the risk of high temperature can be prevented.

[0109] In the above scheme, the first oil path 122, the second oil path 123, the third oil path 125 and the fourth oil path 126 in combination with the sixth spray opening 31215 and the seventh spray opening 31223 can effectively transport the oil to the motor and the rear bearing of the motor and the gear shaft rear bearing.

[0110] In the present embodiment, the oil spraying pipeline 31 can be integrally injection molded, and the material can be engineering plastic. The spraying hole has a diameter ranging from 1.0 mm to 2.5 mm, and in actual application, a hole diameter of 1.5 mm is usually used. The spraying hole can also be provided with a spray head or other structural member to enhance the spraying distance and spraying area. The inner oil channel 511 of the middle shell can be integrally formed with the shell during the machining process, or can be machined by a machining method. No limitation is made.

[0111] In some embodiments, as shown in FIG. 4, Figure 1 and Figure 6As shown, the second lubricating assembly 50 comprises a connecting pipeline 51 for delivering cooling oil to the motor and generator to provide active cooling to reduce the risk of uneven cooling failure. It comprises an inner oil channel 511 in the middle shell and an inner oil channel 512 in the rear shell, wherein the first pipeline 5111 and the third pipeline 5112 are arranged inside the middle shell 12, and the first pipeline 5111 and the third pipeline 5112 are arranged on both sides of the generator stator in the axial direction, i.e. the first pipeline 5111 is away from the center of the motor cavity 16, while the third pipeline 5112 is located at the core position between the generator stator and the motor stator, which is very conducive to delivering oil to the motor stator and the generator stator.

[0112] The first pipeline 5111 and the third pipeline 5112 are vertically connected by the second pipeline 5121 arranged inside the rear shell 13, and the first pipeline 5111, the second pipeline 5121 and the third pipeline 5112 are sequentially connected to form the main part of the connecting pipeline 51, and the first pipeline 5111 is connected to the oil inlet pipe 311 of the first lubricating assembly 30. The connection between the oil inlet pipe 311 and the connecting pipeline 51 not only enables the delivery of cooling lubricating oil to the first pipeline 5111 of the second lubricating assembly 50, but also enables the delivery of oil to the oil spray pipeline 31 of the first lubricating assembly 30.

[0113] Therefore, the connection between the oil inlet pipe 311 and the second pipeline 5121 effectively connects the first lubricating assembly 30 and the second lubricating assembly 50 into a lubricating assembly system.

[0114] In some embodiments, as shown in Figure 1 In order to shorten the delivery distance of the third pipeline 5112 to the motor stator and the generator stator, a first branch 51121 and a second branch 51122 are arranged inside the middle shell 11 and in the middle of the third pipeline 5112. The first branch 51121 and the second branch 51122 are branches of the inner oil channel 511 in the middle shell, and are connected to the motor stator outer oil channel 522 and the generator stator outer oil channel 525 respectively to deliver cooling oil.

[0115] In the above scheme, the first pipeline 5111, the second pipeline 5121 and the third pipeline 5112 are arranged around the stator and rotor of the generator and the motor, the cooling oil delivery distance is short, which is conducive to improving the cooling efficiency of the generator and the motor, and the second pipeline 5121 connects the first lubricating assembly 30 and the second lubricating assembly 50 into a system, which plays a key role in connecting the system, making the whole system compact.

[0116] In some embodiments, as shown in Figure 6As shown, the motor stator outer oil channel 522 is a zigzag groove structure formed by recesses and protrusions on the outer surface of the motor stator. Among them, a certain width is reserved on the outer surface of the motor stator and at the front and rear ends of the outer surface of the motor stator as a boundary, and a plurality of axial grooves are processed in this area. The plurality of grooves are spaced apart and parallel to each other, and the front and rear ends of the plurality of grooves cannot exceed the boundary, so that a protrusion structure is formed between the two rows of grooves.

[0117] As shown in some embodiments, as shown in Figure 6 and Figure 7 As shown, longitudinal notches are processed on each protrusion structure, and each protrusion structure is segmented into multiple protrusions. The protrusions of the adjacent two rows of protrusion structures are correspondingly avoided, that is, one protrusion corresponds to one notch, and multiple protrusions form islands and multiple notches form grooves. The islands and grooves on the entire outer surface of the motor stator form a labyrinth structure. The motor stator oil outlet 5221 is arranged at the upper left corner of the motor mounting position 161 of the labyrinth structure,

[0118] The generator stator outer oil channel 525 is also provided with a generator stator oil outlet 5251 near the upper right corner of the generator mounting position 162. The structure and shape of the generator stator outer oil channel 525 are the same as those of the motor stator outer oil channel 522, and will not be described again.

[0119] Further, the stators of the generator and the motor are embedded in the motor mounting position 161 and the generator mounting position 162 of the middle shell 12. The motor mounting position 161 and the generator mounting position 162 of the middle shell 12 are closely matched with the motor stator and the generator stator. The inner wall of the motor mounting position 161 and the generator mounting position 162 cooperates with the motor stator outer oil channel 522 and the generator stator outer oil channel 525 to form a closed labyrinth oil channel. Therefore, the cooling oil entering the motor stator outer oil channel 522 and the generator stator outer oil channel 525 through the first branch 51121 and the second branch 51122 can flow zigzag along the labyrinth mechanism and finally flow out through the motor stator oil outlet 5221 and the generator stator oil outlet 5251, thereby circulating and carrying away the heat of the motor and the generator stator. Moreover, because the length of the motor stator is greater than that of the generator stator, the area of the motor stator outer oil channel 522 is greater than that of the generator stator outer oil channel 525.

[0120] In the above scheme, the motor stator outer oil channel 522 and the generator stator outer oil channel 525 are provided to solve the heat dissipation problem of the motor and the generator stator with large heat generation. As known, the motor and the generator stator include multiple motor winding coils, and if the heat cannot be effectively dissipated, the risk of burning the motor will occur.

[0121] In order to evenly cool the generator and the motor, the rear shell oil channel 512 is further provided with a fourth pipeline 5122 and a fifth pipeline 5123, the fourth pipeline 5122 and the fifth pipeline 5123 are merged into the third pipeline 5112 and then into the communication pipeline 51, and the ends of the fourth pipeline 5122 and the fifth pipeline 5123 are provided with spray holes for spraying cooling oil.

[0122] Among them, the rear end of the third pipeline 5112 is the center of the merging of the left and right fourth pipeline 5122 and the fifth pipeline 5123, this end is the oil inlet end of the two, and the other end of the two is the spray hole, that is, the fourth pipeline spray port 51221 and the fifth pipeline spray port 51231, and the fourth pipeline spray port 51221 and the fifth pipeline spray port 51231 respectively deliver spray cooling oil to the motor rotor inner oil channel 523 and the generator rotor inner oil channel 526.

[0123] In the above scheme, the fourth pipeline spray port 51221 and the fifth pipeline spray port 51231 spray the motor rotor inner oil channel 523 and the generator rotor inner oil channel 526 to increase the supply of oil for cooling the motor and the generator rotor.

[0124] In the technical scheme of the present application, the inner part of the middle shell 12 is provided with a first pipeline 5111 and a second pipeline 5121, and the inner part of the rear shell 13 is provided with a third pipeline 5112, a fourth pipeline 5122 and a fifth pipeline 5123. Such pipelines can adopt circular inner holes or other shaped inner holes, and can be completed in the same process as the shell structure or can be processed, and can adopt aluminum alloy materials or other materials, without limitation. The shape and structure of the motor stator outer oil channel 522 and the generator stator outer oil channel 525 are not limited. The shape, structure position and number of the motor stator oil channel outlet 5221 and the generator stator oil channel outlet 5251 are not limited.

[0125] In order to accelerate the conduction and take away the heat inside the motor and generator rotor, the motor rotor inner oil channel 523 and the generator rotor inner oil channel 526 are arranged on the shaft of the motor and the generator rotor, the motor rotor inner oil channel 523 includes a motor rotor oil inlet 5231 and a motor rotor oil outlet 5232; similarly, the generator rotor inner oil channel 526 includes a generator rotor oil inlet 5261 and a generator rotor oil outlet 5262.

[0126] In some embodiments, Figure 11 A cross-sectional view of a rotor shaft inner oil channel structure of a hybrid transmission assembly is shown in FIG. 1. Figure 11As shown, the motor rotor oil inlet 5231 is a blind hole located at the motor rotor axis. Its depth is approximately the same as the distance from the end face of the motor stator near the middle housing to the rotor axis. The motor rotor oil outlet 5232 is an L-shaped pipe structure located within the rotor shaft. The vertical section of the L-shaped structure is parallel to the motor rotor axis and faces the rear housing 12. The straight section of the L-shaped structure of the rotor oil outlet 5232 is perpendicular to the bottom end of the rotor oil inlet, i.e., the blind hole end, and is connected to the motor rotor oil inlet 5231.

[0127] At least four motor rotor oil outlets 5232 are evenly distributed in the motor rotor shaft. The four motor rotor oil outlets 5232 and one motor rotor oil inlet 5231 form a one-inlet and four-outlet cooling oil circulation pipeline structure.

[0128] like Figure 6 and Figure 7 As shown, in some embodiments, to accelerate the circulation of cooling oil, an oil return line 5113 is further provided within the middle housing 12. The oil return line 5113 is a return oil conduit located at the bottom of the motor cavity 16 and connected to the gear cavity 15. When the fourth and fifth pipeline spray ports 51221 and 51231 spray cooling oil into the motor rotor internal oil passages 523 and 526, respectively, the cooling oil flows along the motor rotor oil inlet 5231 into the straight section of the L-shaped structure extending from the bottom end of the motor rotor axis to the motor rotor oil outlet 5232. The oil then flows in the opposite direction along the vertical section of the L-shaped structure of the motor rotor oil outlet 5232 and out of the motor rotor oil outlet 5232. The oil flowing out of the four motor rotor oil outlets 5232 flows under the action of gravity to the oil return line 5113 at the bottom of the motor cavity 16.

[0129] The motor rotor oil inlet 5231 and the motor rotor oil outlet 5232 are basically the same in structure as the generator rotor oil inlet 5261 and the generator rotor oil outlet 5262, and the oil circulation method is also the same, so they will not be described in detail.

[0130] In addition, in the technical solution of the present application, the motor rotor internal oil passage 525 and the generator rotor internal oil passage 526 can be either blind holes or through holes. The motor rotor oil inlet 5231 and the generator rotor oil inlet 5261 and the motor rotor oil outlet 5232 and the generator rotor oil outlet 5262 can be arranged parallel, inclined, or in other arrangements without limitation. The shape and number of the motor rotor oil inlet 5231 and the generator rotor oil inlet 5261, the motor rotor oil outlet 5232, and the generator rotor oil outlet 5262 are not limited.

[0131] In the above scheme, the motor rotor oil inlet 5231, the generator rotor oil inlet 5261 and the motor rotor oil outlet 5232, the generator rotor oil outlet 5262 form a four-outlet cooling oil circulation pipeline structure, which can solve the internal heat dissipation problem of the motor rotor and the generator rotor, and make the internal and external heat dissipation of the motor and the generator consistent, and the cooling is more uniform.

[0132] The lubrication and cooling system of the hybrid transmission assembly 200 is an important part of the transmission assembly, and needs to provide cooling lubricating oil continuously during the operation of the transmission assembly. Therefore, the lubricating liquid driving assembly 60 plays an important role.

[0133] In some embodiments, as shown in Figure 1 The lubricating liquid driving assembly 60 includes an oil suction filter 61, an electronic oil pump 62 and an oil cooler 63 connected in sequence and forms a main pipeline for oil inlet and delivery, which is connected with the first pipeline 5111 of the middle shell 12 and delivers oil.

[0134] Based on the purpose of effective cooling and strengthening of vehicle energy efficiency management, the stators of the generator and the motor are provided with temperature sensing devices (not shown in the figure). By collecting temperature and torque demand data, the vehicle control center can control the oil pumping amount of the electronic oil pump 62, and timely adjust the flow supply according to the demand, to ensure the cooling and lubrication demand, and will not cause excessive cooling.

[0135] When applying the lubricating assembly of the hybrid transmission assembly 200, the oil suction filter 61, the electronic oil pump 62 and the oil cooler 63 are connected in sequence to form a main pipeline for cooling and lubricating oil, and the oil outlet end of the oil cooler 63 is prepared to connect the oil inlet end of the first pipeline 5111.

[0136] Next, install the first lubricating assembly 30, separate the front shell 11 and the middle shell 12, and install a set of oil spraying pipelines 31 on the middle shell 12. One end of the oil inlet pipe 311 is inserted into the middle shell oil channel 511 of the middle shell 12 for connection. One end of the first oil outlet pipe 3121 and the second oil outlet pipe 3122 is respectively overlapped with the second pipeline mounting position 127 of the middle shell 12. Then, slowly buckle the front shell 11, and insert the other end of the first oil outlet pipe 3121 and the second oil outlet pipe 3122 into the first pipeline mounting position 111 of the front shell 11. Then, buckle the front shell 11 and the middle shell 12 and lock the connecting piece.

[0137] Next, check the second lubricating assembly 50. First, check the middle shell 12, the rear shell 13, the oil channel 512 and the installation of the generator and the motor. Then, buckle the middle shell 12 and the rear shell 13 and lock them.

[0138] Next, the oil outlet end of the oil cooler 63 is connected to the oil inlet end of the first pipeline 5111 of the middle shell 12, and thus the oil flows from the oil suction filter 61 to the first pipeline 5111 of the middle shell 12 and the second pipeline 5121 of the rear shell 13 through the oil cooler 63 driven by the electronic oil pump 62, and then is bent to enter the third pipeline 5112 of the middle shell 12.

[0139] The oil entering the third pipeline 5112 flows through the oil inlet pipe 311 of the first lubricating assembly 30 in the middle shell 12, and the oil enters the oil spraying pipeline 31 through the oil inlet pipe 311 to cool and lubricate the gear assembly in the gear cavity 15 from a high position, and the sprayed oil flows to the bottom of the gear cavity 15 under the action of gravity.

[0140] The oil entering the third pipeline 5112 flows through the middle section of the third pipeline 5112 to enter the first branch 51121 and the second branch 51122 inside the middle shell 12, and then enters the labyrinth oil channel structure of the motor stator outer oil channel 522 and the generator stator outer oil channel 525, respectively, and flows out through the motor stator oil channel outlet 5221 and the generator stator oil channel outlet 5251, and the flowed-out oil flows to the bottom of the motor cavity 16 under the action of gravity.

[0141] The oil entering the third pipeline 5112 flows through the rear end of the third pipeline 5112 to flow into the fourth pipeline 5122 and the fifth pipeline 5123 inside the rear shell 13, and then enters the motor rotor oil inlet 5231 and the generator rotor oil inlet 5261, and then flows out through the motor rotor oil outlet 5232 and the generator rotor oil outlet 5262, and the flowed-out oil flows to the bottom of the motor cavity 16 under the action of gravity.

[0142] The oil gathered at the bottom of the gear cavity 15 can cool and lubricate the gear shaft assembly at the bottom of the gear cavity 15, and can also flow back to the oil suction filter 61 and be driven by the electronic oil pump 62 to circulate and cool and lubricate again.

[0143] During the circulation process, the temperature sensing device (not shown in the figure) of the motor and the generator detects the real-time temperature and feeds back to the vehicle control center, and the vehicle control center can control the oil pumping amount of the electronic oil pump 62 and timely adjust the flow supply according to the demand.

[0144] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hybrid transmission assembly, comprising: The transmission comprises a shell assembly, a transmission assembly and a lubricating assembly. The shell assembly comprises a front shell, a middle shell and a rear shell, the front shell and the middle shell form a gear cavity for accommodating the transmission assembly, the gear cavity accommodates a motor gear set, a generator gear set, an intermediate shaft gear set and a differential at the bottom of the transmission assembly. The rear shell and the middle shell form a motor cavity, the middle shell is provided with mounting holes for mounting the motor and the generator, and the motor and the generator are provided with temperature sensing devices. The lubricating assembly comprises a first lubricating assembly, a second lubricating assembly and a lubricating liquid driving assembly. The first lubricating assembly is arranged in the gear cavity and has branch oil paths and a plurality of oil injection ports, and the first lubricating assembly is overlapped with the front shell and the middle shell. The second lubricating assembly comprises a communication pipeline, the communication pipeline comprises a middle shell inner oil channel integrally formed with the middle shell and a rear shell inner oil channel integrally formed with the rear shell, and the first lubricating assembly communicates with the middle shell inner oil channel and sprays cooling lubricating oil from a high position to the gear sets and bearings in the gear cavity. The generator is provided with a generator stator outer oil channel and a generator rotor inner oil channel, the motor is provided with a motor stator outer oil channel and a motor rotor inner oil channel, and the middle shell inner oil channel also communicates with the generator stator outer oil channel and the motor stator outer oil channel respectively, and the rear shell inner oil channel communicates with the generator rotor inner oil channel and the motor rotor inner oil channel respectively. The lubricating liquid driving assembly adjusts the delivery flow of the cooling lubricating oil according to the real-time temperature detected by the temperature sensing device.

2. The hybrid transmission assembly of claim 1, wherein, The first lubricating assembly comprises an oil injection pipeline, the oil injection pipeline comprises an oil inlet pipe and at least two oil outlet pipes in communication with the oil inlet pipe, one of the oil outlet pipes is used for spraying the motor gear set and the intermediate shaft gear set, and the other oil outlet pipe is used for spraying the generator gear set.

3. A hybrid transmission assembly according to claim 2, wherein, The front shell is provided with first mounting positions of the two oil outlet pipes, the middle shell is provided with second mounting positions of the two oil outlet pipes, and the two ends of the oil outlet pipes are overlapped and arranged in the corresponding first mounting positions and second mounting positions respectively, the two oil outlet pipes are parallel to the oil inlet pipe and are located higher than the oil inlet pipe.

4. The hybrid transmission assembly of claim 1, wherein, The middle shell inner oil channel comprises a first pipeline and a third pipeline, the rear shell inner oil channel comprises a second pipeline, the first pipeline, the second pipeline and the third pipeline are sequentially communicated to form a main part of the communication pipeline, and the oil inlet pipe of the first lubricating assembly is communicated with the communication pipeline and can deliver cooling lubricating oil.

5. A hybrid transmission assembly according to claim 4, wherein, The rear shell inner oil channel further comprises a fourth pipeline and a fifth pipeline, the fourth pipeline and the fifth pipeline are connected with the third pipeline after being merged, the fourth pipeline and the fifth pipeline are provided with spray holes, the fourth pipeline can spray cooling lubricating oil to the motor rotor inner oil channel, and the fifth pipeline can spray cooling lubricating oil to the generator rotor inner oil channel.

6. A hybrid transmission assembly according to claim 4, wherein, The third pipeline is provided with a first branch and a second branch, the first branch communicates with the motor stator outer oil channel, and the second branch communicates with the generator stator outer oil channel.

7. The hybrid transmission assembly of claim 1, wherein, The motor stator outer oil channel and the generator stator outer oil channel are both meandering grooves formed by a plurality of recesses and protrusions on the outer circular surface of the stator, the stator of the generator and the motor is embedded in the mounting hole, and the hole wall of the mounting hole cooperates with the motor stator outer oil channel and the generator stator outer oil channel to form a closed oil conveying space.

8. The hybrid transmission assembly of claim 1, wherein, The motor rotor inner oil channel and the generator rotor inner oil channel are both circulation pipeline structures with four outlets for one inlet.

9. The hybrid transmission assembly of claim 1, wherein, The lubricating liquid driving assembly comprises, in sequence, an oil suction filter, an electronic oil pump and an oil cooler, and the oil suction filter, the electronic oil pump and the oil cooler are connected to form an oil inlet conveying main pipeline.

10. A vehicle characterized by comprising: The vehicle comprises the hybrid transmission assembly according to any one of claims 1-9.

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