Hybrid transmission assembly and vehicle

Abstract

The utility model provides a hybrid transmission assembly and a vehicle. The hybrid transmission assembly comprises a shell assembly, a speed change 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 define a gear cavity for containing the speed change assembly, the speed change assembly comprises a motor gear set, a generator gear set, a middle shaft gear set and a differential mechanism located at the bottom of the speed change assembly, and the motor gear set is in transmission connection with the differential mechanism through the middle shaft gear set; the generator gear set and the motor gear set are opposite at intervals and are in transmission connection with the differential mechanism. The lubricating assembly comprises an oil liquid spraying pipeline, the oil liquid spraying pipeline is arranged in the gear cavity and located above the motor gear set and the generator gear set, the oil liquid spraying pipeline comprises two oil outlet pipes arranged in a spaced mode and an oil inlet pipe communicated with the two oil outlet pipes, one oil outlet pipe 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. And the other oil outlet pipe is used for spraying the generator gear set.

Description

Technical Field

[0001] The present application relates to a technology in the field of automotive transmissions, and specifically to a hybrid transmission assembly and a vehicle. Background Art

[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 in a hybrid transmission can reach over 20,000 rpm. To match this high speed, the need for lubrication and cooling of the transmission's gears and bearings is becoming increasingly urgent. Furthermore, most common hybrid transmissions feature a 5- or 6-axis structure, which places the high-speed gear shafts at the highest position. Current gear and bearing lubrication solutions suffer from insufficient cooling and lubrication. For example, with gear oil splash lubrication, the amount of oil stirred up by the gears is insufficient to reach high-positioned gears and bearings. With oil collection box lubrication, since the oil collection box is often located above the gears, it cannot collect oil at low speeds, posing the risk of insufficient lubrication at low speeds. With housing-opening lubrication, gears and bearings are lubricated through oil channels in the housing. However, due to the relatively dispersed location of the gears and bearings, oil cannot be delivered to multiple gear pairs and bearings in a timely manner, resulting in high temperatures and the risk of damage or even failure of the hybrid transmission. Utility Model Content

[0003] The present application provides a hybrid transmission assembly and vehicle, which uses a spray multi-branch pipeline combined with an oil flow channel in the housing to actively spray oil at a higher position in the gear cavity to lubricate and cool the high-position gear shaft and bearings.

[0004] The present application provides a hybrid transmission assembly, including a housing assembly, a speed shift assembly, and a lubrication assembly;

[0005] The housing assembly includes a front housing, a middle housing, and a rear housing. The front housing and the middle housing together form a gear cavity for accommodating the speed change assembly, and the rear housing and the middle housing together form a motor cavity.

[0006] The transmission assembly includes a motor gear set, a generator gear set, an intermediate shaft gear set, and a differential located at the bottom of the transmission assembly. The motor gear set is drivingly connected to the differential through the intermediate shaft gear set; the generator gear set is spaced apart from the motor gear set and is drivingly connected to the differential.

[0007] The lubrication assembly includes an oil spray pipeline, which is arranged in the gear cavity and located above the motor gear set and the generator gear set. The oil spray pipeline includes two oil outlet pipes arranged at intervals and an oil inlet pipe connecting the two oil outlet pipes. The oil inlet pipe is located in the empty space enclosed by the differential, the motor gear set and the generator gear set; one of the oil outlet pipes is used to spray the motor gear set and the intermediate shaft gear set, and the other oil outlet pipe is used to spray the generator gear set.

[0008] In one embodiment, the middle shell is provided with an oil flow channel, the oil inlet pipe is communicated with the oil flow channel, and a sealing ring is provided at the connection between the oil inlet pipe and the middle shell.

[0009] In one embodiment, the spray pipeline also includes a first connecting bridge pipe, a second connecting bridge pipe and a reinforcing rib; the oil outlet pipe includes a first oil outlet pipe and a second oil outlet pipe, the first connecting bridge pipe connects the oil inlet pipe and the first oil outlet pipe, and the second connecting bridge pipe connects the oil inlet pipe and the second oil outlet pipe.

[0010] In one embodiment, a first spray port and a second spray port are provided at one end of the first oil outlet pipe close to the front housing, wherein the first spray port faces the front bearing of the motor gear shaft, and the second spray port faces the front bearing of the intermediate shaft gear shaft; a third spray port is further provided at the middle portion of the first oil outlet pipe, and the third spray port faces the motor gear set;

[0011] The second oil outlet pipe is provided with a fourth spray port and a fifth spray port, wherein the fourth spray port faces the front bearing of the generator gear shaft; and the fifth spray port faces the generator gear set.

[0012] In one embodiment, the motor gear set includes a front bearing of the motor, a rear bearing of the motor gear shaft and a first conductive ring located therebetween, a first oil circuit is provided between the front bearing of the motor and the first conductive ring, a second oil circuit is provided between the rear bearing of the motor gear shaft and the first conductive ring, and a sixth spray port is provided at one end of the first oil outlet pipe near the middle shell, and the oil sprayed from the sixth spray port enters the first oil circuit and the second oil circuit respectively under the diversion action of the first conductive ring.

[0013] In one embodiment, the generator gear set includes a generator front bearing, a generator gear shaft rear bearing, and a second conductive ring located therebetween. A third oil circuit is provided between the generator front bearing and the second conductive ring, and a fourth oil circuit is provided between the generator gear shaft rear bearing and the second conductive ring. A seventh spray port is provided at the other end of the second oil outlet pipe close to the middle shell. The oil sprayed from the seventh spray port enters the third oil circuit and the fourth oil circuit respectively under the diversion effect of the second conductive ring.

[0014] In one embodiment, the oil spray pipeline is arranged between the motor gear shaft and the generator gear shaft, and the oil inlet pipe is close to the differential, and the first connecting bridge pipe and the second connecting bridge pipe are arranged at an obtuse angle with the oil inlet pipe as the center.

[0015] In one embodiment, the front shell is provided with two first pipeline installation positions, the middle shell is provided with two second pipeline installation positions, and both ends of the oil outlet pipe are overlapped and respectively provided in the corresponding first pipeline installation positions and the second pipeline installation positions.

[0016] In one embodiment, a clamping portion is provided at both ends of the oil outlet pipe, and the clamping portion is arranged in the first pipeline installation position and the second pipeline installation position.

[0017] The present application also provides a vehicle, which includes the above-mentioned hybrid transmission assembly.

[0018] After adopting the above technical solution, the beneficial effects are:

[0019] This application provides a transmission assembly and vehicle, wherein a gear cavity is provided with a motor gear set, a generator gear set, an intermediate shaft gear set, and a differential located at the bottom of the transmission assembly. The generator gear set is spaced opposite the motor gear set and is drive-connected to the differential, forming a V-shaped arrangement. The V-shaped opening provides space for an oil spray line. The oil spray line not only has a one-inlet, two-outlet oil pipe structure but is also located high within the gear cavity. This allows it to actively spray oil to lubricate and cool high-positioned gear shafts and bearings, thus avoiding localized lubrication deficiencies, reducing losses in the hybrid transmission assembly caused by insufficient cooling and lubrication, and improving the transmission efficiency of the transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 A schematic diagram of the housing structure of a hybrid transmission assembly.

[0022] Figure 2 A schematic diagram of the front housing structure of a hybrid transmission assembly.

[0023] Figure 3 A schematic diagram of a transmission component of a hybrid transmission assembly.

[0024] Figure 4 A schematic diagram of an oil spray pipeline for a hybrid transmission assembly.

[0025] Figure 5 This is a schematic diagram of the middle housing mechanism of a hybrid transmission assembly.

[0026] Figure 6 This is a partial schematic diagram of a first oil circuit and a second oil circuit of a hybrid transmission assembly.

[0027] Figure 7 This is a partial schematic diagram of the third oil circuit and the fourth oil circuit of a hybrid transmission assembly.

[0028] Reference numerals:

[0029] 100-A hybrid transmission assembly;

[0030] 11-front housing; 111-first pipeline installation position;

[0031] 12-middle shell; 121-oil flow channel; 122-first oil circuit; 123-second oil circuit; 125-third oil circuit; 126-fourth oil circuit; 127-second pipeline installation position;

[0032] 13- rear shell;

[0033] 15-gear cavity;

[0034] 16-motor cavity;

[0035] 20-speed shift assembly;

[0036] 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;

[0037] 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;

[0038] 23-intermediate shaft gear set, 231-intermediate gear shaft, 232-intermediate gear shaft front bearing, 233-intermediate gear shaft rear bearing;

[0039] 25- Differential;

[0040] 26-input shaft gear set, 261-input shaft gear shaft, 262-input shaft front bearing, 263-input shaft rear bearing;

[0041] 27-clutch shaft gear set, 271-clutch shaft, 272-clutch shaft front bearing, 273-clutch shaft rear bearing;

[0042] 30-lubrication assembly;

[0043] 31-Oil spray pipeline; 311-Oil inlet pipe; 3111-Sealing ring; 312-Oil outlet pipe; 3121-First oil outlet pipe; 31211-First spray port; 31212-Second spray port; 31213-Third spray port; 31215-Sixth spray port; 3122-Second oil outlet pipe; 31221-Fourth spray port; 31222-Fifth spray port; 31223-Seventh spray port; 3123-Clamping part; 313-First connecting bridge pipe; 315-Second connecting bridge pipe; 316-Reinforcement rib. DETAILED DESCRIPTION

[0044] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0045] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0046] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0047] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0048] Due to the rapid development of new energy vehicles, the shortcomings of insufficient lubrication and cooling of gears and bearings in hybrid transmissions need to be urgently addressed. The technical solution provided in this application can achieve active lubrication of multiple high-position gears and bearings, effectively improving the problem of insufficient cooling in the original structure.

[0049] This application provides a hybrid transmission assembly 100, Figure 1 A schematic diagram of a housing structure of a hybrid transmission assembly. Figure 2 A schematic diagram of the front housing structure of a hybrid transmission assembly is shown in FIG. Figure 1 and Figure 2 As shown, a hybrid transmission assembly 100 includes a housing assembly, a transmission assembly 20, and a lubrication assembly 30. The housing assembly includes a front housing 11, a middle housing 12, and a rear housing 13. The front housing 11 and the middle housing 12 enclose a gear chamber 15 for accommodating the transmission assembly 20. The rear housing 13 and the middle housing 12 enclose a motor chamber 16.

[0050] The transmission assembly 20 includes 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 20. The motor gear set 21 is transmission-connected to the differential 25 via the intermediate shaft gear set 23; the generator gear set 22 is spaced apart from the motor gear set 21 and transmission-connected to the differential 25.

[0051] Figure 3 This is a schematic diagram of a hybrid transmission assembly. Please refer to Figure 4 The lubrication assembly 30 includes an oil spray pipeline 31, which is arranged in the gear cavity 15 and above the motor gear set 21 and the generator gear set 22. The oil spray pipeline 31 includes two oil outlet pipes 312 arranged at intervals and an oil inlet pipe 311 connecting the two oil outlet pipes 312. The oil inlet pipe 311 is located in the empty space enclosed by the differential 25, the motor gear set 21 and the generator gear set 22; one of the oil outlet pipes 312 is used to spray the motor gear set 21 and the intermediate shaft gear set 23, and the other oil outlet pipe 312 is used to spray the generator gear set 22.

[0052] From the above solution, it can be seen that the overall idea of ​​solving the problem of insufficient cooling and lubrication of hybrid transmission gears and bearings is to accurately distribute and direct the cooling oil flow through the housing assembly combined with the structure and position of the oil spray pipeline 31, thereby achieving active lubrication of multiple high-position gears and bearings.

[0053] In order to make the technical solutions, objectives and advantages of the technology of this application more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments.

[0054] In some embodiments, as Figure 1As shown, the housing assembly includes a front housing 11, a middle housing 12, and a rear housing 13. The front housing 11 is semi-shell-shaped and has a recessed area. The middle housing 12 is disposed between the front housing 11 and the rear housing 13, i.e., both left and right sides of the middle housing 12 have bearing mounting locations, which play an important supporting role. The rear housing 13 is also semi-shell-shaped and has a recessed area opposite to the recessed area of ​​the front housing 11. The front housing 11 and the middle housing 12 enclose a gear cavity 15 that accommodates the speed change assembly 20, and the rear housing 13 and the middle housing 12 enclose a motor cavity 16.

[0055] The front housing 11, the middle housing 12, and the rear housing 13 can be formed by metal die-casting or machining, without limitation. For ease of understanding, the direction closer to the front housing 11 is defined as the front, the direction closer to the rear housing 13 is defined as the rear, and the direction of gravity is the up-down direction.

[0056] In some embodiments, as Figure 1 and Figure 2 As shown, the gear chamber 15 contains the motor gear set 21, the generator gear set 22, the intermediate shaft gear set 23 and the differential 25 located at the bottom of the transmission assembly 20. In addition, the gear chamber 15 is also provided with an input shaft gear set 26 and a clutch shaft gear set 27, for a total of six gear shaft systems.

[0057] The six gear shafts within gear cavity 15 are arranged in a V-shaped pattern from front to back. Generator gear set 22 is spaced apart from motor gear set 21, with the motor gear set 21, intermediate shaft gear set 23, and differential 25 positioned on the left side of the V, from top to bottom. The generator gear set 22, input shaft gear set 26, clutch shaft gear set 27, and differential 25 are positioned on the right side of the V, from top to bottom. The two gear sets on the left side of the V and the three gear sets on the right side converge at differential 25 at the bottom of the V. The six gear shafts arranged in the V are meshed and connected in sequence, enabling power transmission between them.

[0058] Please also refer to Figure 3 The motor gear set 21 is located at the first position from top to bottom on the left side of the V, and includes a motor gear shaft 211, a motor gear shaft front bearing 212, a motor gear shaft rear bearing 213 and a motor front bearing 216. A first conductive ring 215 is installed between the motor front bearing 216 and the motor gear shaft rear bearing 213.

[0059] The intermediate shaft gear set 23 is located at the second position from top to bottom on the left side of the V-shape, and includes an intermediate gear shaft 231 , an intermediate gear shaft front bearing 232 and an intermediate gear shaft rear bearing 233 .

[0060] The differential 25 is located at the third position from top to bottom on the left side of the V.

[0061] The intermediate gear shaft 231 is located between the motor gear shaft 211 and the differential 25 , and the intermediate gear shaft 231 is meshed with the motor gear shaft 211 and the gears of the differential 25 .

[0062] The generator gear set 22 is located at the first position from top to bottom on the right side of the V, and includes a generator gear shaft 221, a generator gear shaft front bearing 222, a generator gear shaft rear bearing 223 and a generator front bearing 226. A second conductive ring 225 is installed between the generator front bearing 226 and the generator gear shaft rear bearing 223.

[0063] The input shaft gear set 26 is located at the second position from top to bottom on the right side of the V-shape, and includes an input shaft gear shaft 261 , an input shaft front bearing 262 and an input shaft rear bearing 263 .

[0064] The clutch shaft gear set 27 is located at the third position from top to bottom on the right side of the V-shape. The clutch shaft gear set 27 includes a clutch shaft 271 , a clutch shaft front bearing 272 and a clutch shaft rear bearing 273 .

[0065] The input shaft gear shaft 261 meshes with the clutch shaft 271 and is located between the generator gear shaft 221 and the gear of the differential 25 and meshes with both.

[0066] As can be seen, the differential 25 is located at the bottom end of the gear cavity 15. The motor gear set 21 is located in the upper left corner of the gear cavity 15, while the generator gear set 22 is located in the upper right corner. The generator gear set 22 is spaced apart from the motor gear set 21. At speeds exceeding 20,000 rpm, the gear sets in the upper left and right corners of the gear cavity 15 require significant cooling and lubrication, urgently requiring lubrication and heat dissipation. In this embodiment, the lubrication assembly 30 within the gear cavity 15 continuously delivers cooling and lubricating oil.

[0067] In the above scheme, the hybrid transmission assembly adopts a six-axis structural design, which has a compact structure and is easy to install and maintain.

[0068] In some embodiments, Figure 3 and Figure 4 As shown, the lubrication assembly 30 includes an oil spray line 31, a key component of the lubrication assembly 30. Located near the top of the gear chamber 15, at the opening of the V-shaped six-shaft system of the transmission assembly 20, it is situated between the motor gear shaft 211 and the generator gear shaft 221, providing a commanding position. To improve lubrication oil delivery efficiency and shorten the oil delivery distance, an oil flow channel 121 is provided within the middle housing 12, enabling the oil pump to rapidly deliver oil to the oil spray line 31.

[0069] The oil spray pipeline 31 is a hollow pipe structure with branches, including an oil inlet pipe 311 and at least two oil outlet pipes 312 connected to the oil inlet pipe 311, one of the oil outlet pipes 312 is used to spray the motor gear set 21 and the intermediate shaft gear set 23, and the other oil outlet pipe 312 is used to spray the generator gear set 22.

[0070] The oil inlet pipe 311 is connected to the oil flow channel 121 of the middle shell 12, and a sealing ring 3111 is installed at the connection point to prevent oil leakage and noise caused by vibration and friction.

[0071] like Figure 3 As shown, the oil spray pipeline 31 has an oil inlet pipe 311 and two oil outlet pipes 312 arranged in parallel, with the oil inlet pipe 311 in the middle, a first oil outlet pipe 3121 on the left, and a second oil outlet pipe 3122 on the right. A first connecting bridge pipe 313 is vertically connected between the first oil outlet pipe 3121 and the oil inlet pipe 311. A second connecting bridge pipe 315 is vertically connected between the second oil outlet pipe 3122 and the oil inlet pipe 311.

[0072] In order to ensure the structural strength of the entire oil spray pipeline 31, the first connecting bridge pipe 313 and the second connecting bridge pipe 315 are located at the vertical connection between the oil inlet pipe 311 and the first oil outlet pipe 3121 and the second oil outlet pipe 3122. Reinforcing ribs 316 are also provided. The five components of 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 are connected by the reinforcing ribs 316 to form a complete and closed oil delivery pipeline.

[0073] In some other embodiments, such as Figure 2 and Figure 3 As shown, the first oil outlet pipe 3121, the second oil outlet pipe 3122, and the oil inlet pipe 311 are arranged parallel to each other, but not in the same plane. Horizontally, the oil inlet pipe 311 is slightly lower than the first and second oil outlet pipes 3121 and 3122, and is located near the differential 25. The first and second oil outlet pipes 3121 and 3122 are located on either side of the V-shaped opening of the six-shaft transmission assembly 20. The first oil outlet pipe 3121 is located above the motor gear set 21, while the second oil outlet pipe 3122 is located above the generator gear set 22. Specifically, the first connecting bridge pipe 313 connecting the first oil outlet pipe 3121 and the second connecting bridge pipe 315 connecting the second oil outlet pipe 3122 are arranged at an obtuse angle with the oil inlet pipe 311 as the central node, positioned high up in the gear cavity 15 in a goose-wing-like configuration. This allows for high-level spraying of cooling lubricating oil, resulting in greater efficiency. Furthermore, the oil spraying pipeline 31 can adapt to the spatial layout in the hybrid box, and the overall structure is compact.

[0074] The oil spray pipeline 31 can be made of metal or engineering plastics, and can be formed in an integral manner or welded and spliced. The structure of the hollow inner hole can be circular or in other shapes, without limitation.

[0075] In other embodiments, the number and structure of the oil inlet pipe 311, the oil outlet pipe 312 and the connecting pipe, including but not limited to being in the same plane, and whether they are non-parallel or non-vertical, can be implemented and are not limited here.

[0076] In order to enhance the stability of the oil spraying pipeline 31 and avoid the oil spraying pipeline 31 from generating noise due to vibration during the high-speed travel of the vehicle, Figure 2 and Figure 5 As shown, the front housing 11 and the middle housing 12 are also equipped with multiple mounting locations for supporting and securing the oil spray pipeline 31. Specifically, the front housing 11 is provided with two first pipeline mounting locations 111, and the middle housing 12 is provided with two second pipeline mounting locations 127. Both the first pipeline mounting locations 111 and the second pipeline mounting locations 127 are circular holes that can mate with and connect to the oil outlet pipe 312. The ends of the first and second oil outlet pipes 3121 and 3122 are overlapped and installed in the corresponding first and second pipeline mounting locations 111 and 127, respectively.

[0077] In addition, in addition to the mounting position, in order to prevent the oil spray pipeline 31 from shifting or lateral movement, a clamping portion 3123 is provided at both ends of the oil outlet pipe 312. The clamping portion 3123 is a cylindrical step structure, which is used to restrict the oil spray pipeline 31 installed 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.

[0078] Multiple mounting positions and the housing can be formed at one time, and can be processed by metal die-casting or machining without restriction.

[0079] In the above scheme, the lubrication component 30 is an oil spray pipeline 31. This oil spray pipeline 31 has a branch structure, with oil inlet in the middle and oil outlet at both ends. It is connected between the front shell 11 and the middle shell 12 and is located at a high position in the gear cavity 15. It can spray cooling lubricating oil from a high position and in a targeted manner, providing sufficient cooling and lubrication to the gears and bearings located at a high position in the gear cavity 15.

[0080] In order to improve the accuracy of the injection direction, such as Figure 3 and Figure 4As shown, the 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. Furthermore, the first spray port 31211 and the second spray port 31212 spray in different directions. The first spray port 31211 is directed toward the front bearing 212 of the motor gear shaft, while the second spray port 31212 is directed toward the front bearing 232 of the intermediate gear shaft. Furthermore, a third spray port 31213 is provided in the middle of the first oil outlet pipe 3121, directed toward the motor gear set 21. Because the oil spray line 31 is located at a high position and is configured in the right direction with 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 the risk of high temperatures.

[0081] 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 shaft front bearing 222 and the generator gear set 22, providing sufficient cooling and lubrication to prevent the risk of high temperatures.

[0082] 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.

[0083] In order to provide proper cooling and lubrication for the rear bearing of the gear shaft which is not easily sprayed with oil and is located at a higher position, Figure 6 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 first conductive ring 215 .

[0084] The first oil passage 122 is an oil flow channel 121 provided on the inner wall of the mounting hole for the front motor bearing 216 within the middle housing 12. The first oil passage 122 is connected to the second pipe mounting location 127 of the first oil outlet pipe 3121 via a bend. A sixth spray port 31215 is provided at one end of the first oil outlet pipe 3121 near the middle housing 12, allowing oil sprayed from the sixth spray port 31215 to be directed into the first oil passage 122. The second oil passage 123 is connected to the first oil passage 122 via a bend. Thus, the second oil passage 123, the first oil passage 122, and the sixth spray port 31215 form a Z-shaped oil passage 121. This allows oil, diverted by the first conductive ring 215, to enter the first and second oil passages 122 and 123, respectively, providing cooling and lubrication for the front motor bearing 216 and the rear motor gear shaft bearing 213.

[0085] In some other implementations, such as Figure 7 As shown, a third oil passage 125 is provided between the generator front bearing 226 and the slit of the second conductive ring 225, and a fourth oil passage 126 is provided between the generator gear shaft rear bearing 223 and the slit of the second conductive ring 225. The third and fourth oil passages 125 and 126 are located within the center shell 12 between the mounting holes for the generator front bearing 226 and the generator gear shaft rear bearing 223. A seventh spray port 31223 is provided at the end of the second oil outlet pipe 3122 near the center shell 12. The oil sprayed from the seventh spray port 31223 is diverted to the third and fourth oil passages 125 and 126 through the slit of the second conductive ring 225, thereby providing sufficient cooling and lubrication for the generator front bearing 226 and the generator gear shaft rear bearing 223, preventing the risk of high temperatures.

[0086] In the above solution, the oil flow channels 121 inside the four middle shells 12, combined with the sixth spray port 31215 and the seventh spray port 31223, effectively transport the oil to the motor and the rear bearing of the motor and the rear bearing of the gear shaft.

[0087] In this embodiment, the oil spray line 31 can be integrally injection molded from engineering plastic. The spray hole diameter ranges from 1.0 mm to 2.5 mm, with a 1.5 mm diameter often used in practice. The spray hole can also be equipped with a nozzle or other structural components to enhance the spray distance and area. The oil flow channel 121 within the middle shell 12 can be formed simultaneously with the shell or machined. This is not a limitation.

[0088] When installing the oil spray pipeline 31, first separate the front shell 11 and the middle shell 12, and install a set of oil spray pipelines 31 on the middle shell 12, wherein one end of the oil inlet pipe 311 is inserted into the oil flow channel 121 of the middle shell 12 for connection, and one end of the first oil outlet pipe 3121 and the second oil outlet pipe 3122 are respectively overlapped with the second pipeline installation position 127 of the middle shell 12, and then the front shell 11 is slowly buckled, and the first pipeline installation position 111 of the front shell 11 is aligned with the other end of the first oil outlet pipe 3121 and the second oil outlet pipe 3122 for insertion and overlap, and then the front shell 11 is fastened to the middle shell 12 and the connecting piece is locked.

[0089] In summary, the hybrid transmission assembly and vehicle of the present application utilize a multi-branch spray line in conjunction with the housing's oil flow channel 121 to actively spray oil at higher locations within the gear chamber 15 for lubrication and cooling of the gear shafts and bearings located higher up. This allows for more precise control of the amount of lubricant in each area, preventing localized lubrication deficiencies, minimizing losses in the hybrid transmission assembly caused by insufficient cooling and lubrication, and improving the transmission efficiency of the transmission system. Simultaneously, the gear shafts located lower within the gear chamber 15 are immersed in the lubricating and cooling oil within the gear chamber 15, allowing them to operate normally under the existing lubrication and cooling system.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A hybrid transmission assembly, characterized in that: Including housing assembly, speed change assembly and lubrication assembly; The housing assembly includes a front housing, a middle housing, and a rear housing. The front housing and the middle housing together form a gear cavity for accommodating the speed change assembly, and the rear housing and the middle housing together form a motor cavity. The transmission assembly includes a motor gear set, a generator gear set, an intermediate shaft gear set, and a differential located at the bottom of the transmission assembly. The motor gear set is drivingly connected to the differential through the intermediate shaft gear set; the generator gear set is spaced apart from the motor gear set and is drivingly connected to the differential. The lubrication assembly includes an oil spray pipeline, which is arranged in the gear cavity and located above the motor gear set and the generator gear set. The oil spray pipeline includes two oil outlet pipes arranged at intervals and an oil inlet pipe connecting the two oil outlet pipes. The oil inlet pipe is located in the empty space enclosed by the differential, the motor gear set and the generator gear set; one of the oil outlet pipes is used to spray the motor gear set and the intermediate shaft gear set, and the other oil outlet pipe is used to spray the generator gear set.

2. A hybrid transmission assembly according to claim 1, characterized in that: The middle shell is provided with an oil flow channel, the oil inlet pipe is communicated with the oil flow channel, and a sealing ring is provided at the connection between the oil inlet pipe and the middle shell.

3. The hybrid transmission assembly according to claim 1, characterized in that: The spray pipeline also includes a first connecting bridge pipe, a second connecting bridge pipe and a reinforcing rib; the oil outlet pipe includes a first oil outlet pipe and a second oil outlet pipe, the first connecting bridge pipe connects the oil inlet pipe and the first oil outlet pipe, and the second connecting bridge pipe connects the oil inlet pipe and the second oil outlet pipe.

4. The hybrid transmission assembly according to claim 3, characterized in that: The first oil outlet pipe is provided with a first spray port and a second spray port at one end close to the front housing, the first spray port facing the front bearing of the motor gear shaft, and the second spray port facing the front bearing of the intermediate shaft gear shaft; the middle portion of the first oil outlet pipe is also provided with a third spray port, the third spray port facing the motor gear set; The second oil outlet pipe is provided with a fourth spray port and a fifth spray port, wherein the fourth spray port faces the front bearing of the generator gear shaft; and the fifth spray port faces the generator gear set.

5. The hybrid transmission assembly according to claim 3, characterized in that: The motor gear set includes a front bearing of the motor, a rear bearing of the motor gear shaft, and a first conductive ring located therebetween. A first oil circuit is provided between the front bearing of the motor and the first conductive ring, and a second oil circuit is provided between the rear bearing of the motor gear shaft and the first conductive ring. A sixth spray port is provided at one end of the first oil outlet pipe near the middle shell. The oil sprayed from the sixth spray port enters the first oil circuit and the second oil circuit respectively under the diversion action of the first conductive ring.

6. The hybrid transmission assembly according to claim 3, characterized in that: The generator gear set includes a generator front bearing, a generator gear shaft rear bearing, and a second conductive ring located therebetween. A third oil circuit is defined between the generator front bearing and the second conductive ring, and a fourth oil circuit is defined between the generator gear shaft rear bearing and the second conductive ring. A seventh spray port is defined at the other end of the second oil outlet pipe close to the middle casing. The oil sprayed from the seventh spray port enters the third oil circuit and the fourth oil circuit, respectively, under the diversion effect of the second conductive ring.

7. The hybrid transmission assembly according to claim 3, characterized in that: The oil spray pipeline is arranged between the motor gear shaft and the generator gear shaft, and the oil inlet pipe is close to the differential. The first connecting bridge pipe and the second connecting bridge pipe are arranged at an obtuse angle with the oil inlet pipe as the center.

8. The hybrid transmission assembly according to claim 1, characterized in that: The front shell is provided with two first pipeline installation positions, the middle shell is provided with two second pipeline installation positions, and the two ends of the oil outlet pipe are overlapped and arranged in the corresponding first pipeline installation positions and the second pipeline installation positions respectively.

9. The hybrid transmission assembly according to claim 8, characterized in that: Both ends of the oil outlet pipe are provided with clamping parts, and the clamping parts are arranged in the first pipeline installation position and the second pipeline installation position.

10. A vehicle, characterized in that: The vehicle includes the hybrid transmission assembly according to any one of claims 1 to 9.

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