Hybrid transmission and vehicle with same

Abstract

The hybrid transmission comprises a transmission shell, an input shaft system and an intermediate shaft system, the transmission shell is provided with a first oil pipe hole and an oil duct hole, the transmission shell is provided with a first oil duct, the first oil pipe hole forms the head end of the first oil duct, and the oil duct hole forms the tail end of the first oil duct; the first oil duct is used for cooling the intermediate shaft system, a first oil pipe is arranged in the oil duct hole, the first oil pipe is communicated with the first oil duct, the first oil pipe is provided with a spraying part facing the input shaft system, and the spraying part is used for cooling the input shaft system. According to the hybrid transmission designed by the invention, the problem that the hybrid transmission in the prior art is difficult to realize efficient lubrication and cooling is solved.

Description

Technical Field

[0001] The present invention relates to the field of automobile engineering technology, and in particular to a hybrid transmission and a vehicle having the same. Background Art

[0002] Among the existing technologies, pure electric and hybrid vehicles have a strong development momentum in the automotive industry. Compared with fuel vehicles, the significant advantages of new energy vehicles are low energy consumption and low cost. To achieve this goal, the automobile transmission and engine are required to play a vital role.

[0003] The gearbox is a core component, including the housing, shaft teeth, bearings, motors, cooling and lubrication systems, etc. The transmission housing structure and lubrication structure design are particularly important. Poor design will lead to poor lubrication or cooling of components in the gearbox, directly causing failure of components such as gears and bearings.

[0004] The continuous iteration of "transmission cost reduction" requires the housing structure design to be more lightweight, intelligent and compact. The design of the reinforcement ribs is not only related to the housing strength, but also closely related to the vibration and noise of the transmission. Therefore, the design of the transmission housing structure is also of paramount importance.

[0005] The gearbox lubrication on the market is divided into splash lubrication, active lubrication, and a combination of splash and active lubrication. Gearboxes such as reducers have relatively few gears and bearings, and the internal structure is relatively simple, which can generally be achieved through splash lubrication; while gearboxes such as hybrid transmissions have relatively more gears and bearings, and the motor structure is also added, the internal structure becomes more complicated, and lubrication generally adopts a combination of active lubrication and splash lubrication.

[0006] Splash lubrication is entirely achieved by internal gear stirring and the special structure of the internal housing, and the structural design is difficult. Active lubrication requires the use of a mechanical pump or an electronic pump. The amount of lubricating oil in a mechanical pump is proportional to the gear speed, but the low speed can easily lead to poor bearing lubrication; and the use of an electronic pump will increase the cost of the vehicle, consume battery energy, and the vehicle's driving range will inevitably be reduced. The housing design of a traditional hybrid transmission has the following problems: 1. The structural design is unreasonable, resulting in insufficient strength and rigidity of the housing, affecting the overall performance of the hybrid transmission; 2. The oil channel design is imperfect, resulting in low lubrication efficiency, affecting the efficiency of the lubrication system of the hybrid transmission; 3. The improper fixing method of the gear and motor assembly causes the hybrid transmission to vibrate during operation, affecting the stability and reliability of the hybrid transmission.

[0007] There is no effective solution to the above problems yet. Summary of the invention

[0008] The main purpose of the present invention is to provide a hybrid transmission and a vehicle having the same, so as to solve the problem in the prior art that it is difficult to achieve efficient lubrication and cooling of the hybrid transmission.

[0009] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a hybrid transmission is provided, which includes a transmission case, an input shaft system, and an intermediate shaft system: the transmission case is provided with a first oil pipe hole and an oil channel hole, the transmission case is provided with a first oil channel, the first oil pipe hole forms the head end of the first oil channel, the oil channel hole forms the tail end of the first oil channel, the first oil channel is used to cool the intermediate shaft system, a first oil pipe is provided in the oil channel hole, the first oil pipe is connected to the first oil channel, the first oil pipe has a spray portion facing the input shaft system, and the spray portion is used to cool the input shaft system.

[0010] Furthermore, the hybrid transmission also includes a drive motor shaft system, the input shaft system and the intermediate shaft system are located on the same side of the transmission housing, the drive motor shaft system is located on the other side of the transmission housing opposite to the input shaft system, and the hybrid transmission also includes a first cooling line, the first cooling line is connected to the transmission housing, the inlet end of the first cooling line is connected to the first oil channel, and a plurality of injection ports are arranged on the first cooling line, each injection port is arranged toward a different area of ​​the drive motor shaft system.

[0011] Furthermore, the transmission housing forms a drive motor cavity, the drive motor shaft is located in the drive motor cavity, and an oil return hole is provided at the bottom of the drive motor cavity, wherein the coolant sprayed through the injection port enters the oil return hole after performing the cooling task on the drive motor shaft.

[0012] Furthermore, the hybrid transmission includes an output shaft system, and the transmission housing is also provided with a second oil channel, the inlet end of the second oil channel forms a second oil pipe hole, the outlet end of the second oil channel is connected to the middle of the first oil channel, and the second oil channel is used to cool at least one of the intermediate shaft system and the output shaft system.

[0013] Furthermore, the transmission housing is provided with an oil outlet passage, the input end of the oil outlet passage is connected to the tail end of the first oil passage, and the output end of the oil outlet passage forms an opening so that the oil outlet passage can guide the oil in at least one of the first oil passage and the second oil passage to the outside of the transmission housing.

[0014] Furthermore, a second oil pipe is arranged in the first oil pipe hole, the second oil pipe is connected to an external oil delivery mechanism, the second oil pipe is connected to the first oil channel, and a portion of the second oil pipe protruding from the first oil pipe hole is provided with an injection port, and at least part of the injection port is arranged toward the output shaft system.

[0015] Furthermore, the transmission housing is provided with an input shaft cavity, the input shaft system is located in the input shaft cavity, and a third oil channel connected to the oil outlet channel is provided at the bottom of the input shaft cavity, so that the coolant after spraying the output shaft system is discharged to the outside of the transmission housing through the third oil channel and the oil outlet channel.

[0016] Further, the end of the first oil pipe is sealed using a bowl plug.

[0017] Furthermore, a generator shaft system is arranged in the transmission housing, and the hybrid transmission includes a second cooling pipeline, on which a plurality of liquid spray ports are arranged, and the plurality of liquid spray ports are respectively directed toward different areas of the generator shaft system, so that the second cooling pipeline cools the generator shaft system.

[0018] According to another aspect of the present invention, a vehicle is provided, comprising a hybrid transmission, wherein the hybrid transmission is the hybrid transmission described above.

[0019] By applying the technical solution of the present invention, a specific first oil channel is designed on the transmission housing. When the hybrid transmission is running, the cooling oil will be pumped or enter the first oil channel through the first oil pipe hole due to gravity. The oil flows along the oil channel to cool the intermediate shaft system first, and then the oil continues to flow to the oil channel hole. At the oil channel hole, the oil passes through the spray part on the first oil pipe and is sprayed onto the input shaft system to cool the input shaft system. Finally, the oil flows out of the oil channel hole, realizing effective cooling of the key components inside the hybrid transmission, improving the performance and reliability of the transmission, and also improving the economy and safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 It shows a schematic structural diagram of a first embodiment of a hybrid transmission according to the present invention;

[0022] Figure 2 It shows a structural schematic diagram of a second embodiment of a hybrid transmission according to the present invention;

[0023] Figure 3 shows a structural schematic diagram of a third embodiment of a hybrid transmission according to the present invention;

[0024] Figure 4 shows a structural schematic diagram of a fourth embodiment of a hybrid transmission according to the present invention;

[0025] Figure 5 shows a structural schematic diagram of a fifth embodiment of a hybrid transmission according to the present invention;

[0026] Figure 6 shows a structural schematic diagram of a sixth embodiment of a hybrid transmission according to the present invention;

[0027] Figure 7shows a structural schematic diagram of a seventh embodiment of a hybrid transmission according to the present invention;

[0028] Figure 8 shows a structural schematic diagram of an eighth embodiment of a hybrid transmission according to the present invention;

[0029] Fig. 9 shows a schematic structural diagram of a ninth embodiment of a hybrid transmission according to the present invention;

[0030] Fig.10 shows a schematic structural diagram of a tenth embodiment of a hybrid transmission according to the present invention;

[0031] Fig.11 A structural schematic diagram of an eleventh embodiment of a hybrid transmission according to the present invention is shown.

[0032] The above drawings include the following reference numerals:

[0033] 1. Transmission housing; 2. Intermediate shaft system; 3. Output shaft system; 4. Input shaft system; 5. Generator shaft system;

[0034] 10. Suspension;

[0035] 100, first oil pipe; 101, first cooling pipeline; 102, drive motor cavity; 103, second oil pipe; 104, input shaft cavity; 105, second cooling pipeline; 106, oil outlet;

[0036] 20. Pin hole;

[0037] 22. First oil pipe hole;

[0038] 25. Second oil pipe hole;

[0039] 26. Oil channel hole;

[0040] 30. Drive motor shaft system;

[0041] 50. Second oil passage;

[0042] 70, third oil channel;

[0043] 80, first oil channel;

[0044] 90, second fixed point;

[0045] 110, third fixed point;

[0046] 120, reinforcement;

[0047] 130, oil return hole;

[0048] 231, bolt hole;

[0049] 211, first fixed point;

[0050] 401, fourth fixed point;

[0051] 601, fifth fixed point;

[0052] 900. Cross ribs. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0056] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0057] Combination Figures 1 to 11 As shown, according to a specific embodiment of the present application, a hybrid transmission is provided.

[0058] Specifically, the hybrid transmission includes a transmission housing 1, an input shaft system 4, and an intermediate shaft system 2: the transmission housing 1 is provided with a first oil pipe hole 22 and an oil channel hole 26, the transmission housing 1 is provided with a first oil channel 80, the first oil pipe hole 22 forms the head end of the first oil channel 80, the oil channel hole 26 forms the tail end of the first oil channel 80, the first oil channel 80 is used to cool the intermediate shaft system 2, a first oil pipe 100 is provided in the oil channel hole 26, the first oil pipe 100 is connected to the first oil channel 80, the first oil pipe 100 has a spray portion facing the input shaft system 4, and the spray portion is used to cool the input shaft system 4.

[0059] By applying the technical solution of the present invention, by designing a specific first oil passage 80 on the transmission housing 1, when the hybrid transmission is running, the cooling oil will be pumped or enter the first oil passage 80 through the first oil pipe hole 22 due to gravity, and the oil will flow along the oil passage to first cool the intermediate shaft system 2, and then the oil will continue to flow to the oil passage hole 26. At the oil passage hole 26, the oil passes through the spray part on the first oil pipe 100 and is sprayed onto the input shaft system 4 to cool the input shaft system 4. Finally, the oil flows out of the oil passage hole 26, realizing effective cooling of the key components inside the hybrid transmission, improving the performance and reliability of the transmission, and also improving the economy and safety of the vehicle.

[0060] It should be further explained that the transmission housing 1 is fixed to the external housing by multiple bolt holes 231, so that the assembly and disassembly of the transmission housing becomes relatively simple and quick, and it is convenient to adjust or replace parts of the transmission during production and maintenance; the input shaft system 4 includes input shaft gears and bearings, and the intermediate shaft system 2 also includes shaft gears and bearings. The input shaft system 4 directly receives power from the engine or motor, and transmits torque to the gears on the intermediate shaft system 2 through the input shaft gears. This process is the basis of the working principle of the hybrid transmission, ensuring that power can be effectively transmitted from the power source to the drive wheel. The combination of shaft gears and bearings ensures the stable operation of the shaft, and the bearings provide axial and radial support, reduce friction between moving parts, and avoid excessive wear and vibration of the shaft. Because the shaft gears and bearings run at high speed during the operation of the hybrid transmission, a large amount of heat and wear will be generated, so the input shaft system 4 and the intermediate shaft system 2 need to be lubricated and cooled.

[0061] Specifically, Figure 1 , Figure 2 , Fig. 9As shown, the hybrid transmission also includes a drive motor shaft system 30, the input shaft system 4 and the intermediate shaft system 2 are located on the same side of the transmission housing 1, the drive motor shaft system 30 is located on the other side of the transmission housing 1 opposite to the input shaft system 4, and the hybrid transmission also includes a first cooling line 101, the first cooling line 101 is connected to the transmission housing 1, the inlet end of the first cooling line 101 is connected to the first oil channel 80, and a plurality of injection ports are arranged on the first cooling line 101, each of which is arranged toward a different area of ​​the drive motor shaft system 30, to ensure that the cooling oil can evenly cover the various heat-generating parts of the drive motor shaft system 30, thereby improving the cooling efficiency and reducing the risk of local overheating.

[0062] like Fig. 9 As shown, the first cooling pipeline 101 is tightly integrated with the transmission housing 1, which optimizes the layout of the cooling system, enhances the integration of the entire hybrid transmission system, saves space, and improves the overall performance of the system.

[0063] Optionally, after the cooling oil absorbs the heat generated by the input shaft system 4 and the intermediate shaft system 2 in the first oil channel 80, it continues to flow to the inlet end of the first cooling pipeline 101. Inside the first cooling pipeline 101, the oil flows along the path of the pipeline, and through a plurality of injection ports arranged on the pipeline, the oil is directly sprayed to different areas of the drive motor shaft system 30 to achieve cooling of the drive motor shaft system 30. By providing a plurality of injection ports on the first cooling pipeline 101, comprehensive cooling of the drive motor shaft system 30 can be ensured, performance degradation or component damage caused by local overheating can be avoided, and the stability and reliability of the motor can be improved. After completing the cooling of the input shaft system 4 and the intermediate shaft system 2, the cooling oil continues to be used for cooling the drive motor shaft system 30, which not only improves the utilization rate of the oil, but also reflects the integrated optimization of lubrication and cooling functions, and reduces the consumption of coolant and system complexity.

[0064] It should be further explained that in this solution, the method of cooling and lubricating the input shaft system 4 and the intermediate shaft system 2 by the lubricating oil in the first oil channel 80 along the preset oil channel through an independent power source is active lubrication, and the method of lubricating different areas of the drive motor shaft system 30 by setting multiple injection ports on the first cooling pipeline 101 is splash lubrication. This solution combines active lubrication and splash lubrication to fully cover the lubrication needs inside the transmission. Ensure that key components such as the drive motor shaft system 30, the input shaft system 4 and the intermediate shaft system 2 can be efficiently cooled and lubricated, improving the performance and durability of the hybrid transmission.

[0065] Furthermore, if Figure 2 , Figure 7 , Fig. 9As shown, the transmission housing 1 forms a drive motor cavity 102, and the drive motor shaft system 30 is located in the drive motor cavity 102. The bottom of the drive motor cavity 102 is provided with an oil return hole 130, wherein the coolant sprayed from the injection port enters the oil return hole 130 after performing the cooling task on the drive motor shaft system 30. The drive motor cavity 102 is separated from other parts of the transmission housing 1 to form an independent space, which is convenient for independent cooling and lubrication of the drive motor. As part of the lubricating oil circulation system, the oil return hole 130 can be understood as a channel for oil reflux, so that hot oil can be discharged from the drive motor cavity 102, flow back to the oil pan through the oil return hole 130, enter the cooling system for cooling, and then be recycled. This design ensures the continuous circulation of lubricating oil and improves the cooling efficiency. The oil return hole 130 is provided at the bottom of the drive motor cavity 102, and it can also prevent the lubricating oil from accumulating at the bottom to form an oil pool, and timely discharge the excess lubricating oil to keep the cavity clean and the oil reasonably distributed.

[0066] It should be further explained that the drive motor shaft system 30 includes shaft teeth, bearings, a drive motor stator, and a drive motor resolver. The drive motor stator is fixed to the fourth fixed point 401 by four bolts, two of which are designed as pin holes for easy installation; the drive motor resolver is fixed to the fifth fixed point 601 by three bolts and positioned by pin holes. The first cooling pipeline 101 is used to cool the motor stator; the second fixed point 90 and the third fixed point 110 are used to fix the motor and resolver wiring harness to prevent the wiring harness from shaking at will;

[0067] Furthermore, if Figure 1 , Figure 5 As shown, the hybrid transmission includes an output shaft system 3, which also includes shaft teeth and bearings. The transmission housing 1 is also provided with a second oil passage 50. The inlet end of the second oil passage 50 forms a second oil pipe hole 25, through which lubricating oil can be added to the second oil passage 50. The outlet end of the second oil passage 50 is connected to the middle of the first oil passage 80, that is, the first oil passage 80 and the second oil passage 50 form a T-shape. The oil flows through the second oil passage 50 and then flows into the first oil passage 80. The second oil passage 50 is used to cool at least one of the intermediate shaft system 2 and the output shaft system 3.

[0068] The second oil passage 50 is arranged beside the output shaft system 3, and can indirectly cool the output shaft system 3. The liquid in the second oil passage 50 flows along the path of the second oil passage 50 and finally merges into the first oil passage 80, and the coolant in the first oil passage 80 and the second oil passage 50 are collected together to cool the intermediate shaft system 2.

[0069] like Figure 1As shown, the hybrid transmission includes an input shaft system 4, an intermediate shaft system 2 and an output shaft system 3. Among them, the input shaft system 4 includes an input shaft gear and an input shaft bearing arranged on the input shaft, the intermediate shaft system 2 includes an intermediate shaft gear and an intermediate shaft bearing arranged on the intermediate shaft, and the output shaft system 3 includes an output shaft gear and an output shaft bearing arranged on the output shaft. The input shaft gear and the intermediate shaft gear are meshed, and the intermediate shaft gear and the output shaft gear are meshed. Through the meshing transmission connection between the input shaft system 4, the intermediate shaft system 2 and the output shaft system 3, the speed change transmission of the output power of the drive motor can be easily realized; at the same time, the installation position of the bearing in each shaft system component is set to improve the application stability of each shaft system component in the process of realizing power transmission.

[0070] Furthermore, if Figure 6 As shown, the transmission housing 1 is provided with an oil outlet 106, the input end of the oil outlet 106 is connected to the tail end of the first oil channel 80, and the connection between the oil outlet 106 and the first oil channel 80 adopts an efficient sealing design, such as a bowl plug seal, to ensure the connectivity between the oil channels and the integrity of the system. The output end of the oil outlet 106 forms an opening so that the oil outlet 106 can guide the oil of at least one of the first oil channel 80 and the second oil channel 50 to the outside of the transmission housing 1.

[0071] The output end of the oil outlet channel 106 forms an opening, which is usually connected to the cooling system or oil recovery system outside the transmission housing 1. When the lubricating oil is discharged through the output end opening of the oil outlet channel 106, it will be sent to an external cooling device, such as an oil cooler or a heat exchanger, for cooling to remove the heat absorbed when circulating in the housing to prevent the oil temperature from being too high. The cooled lubricating oil is then sent back to the housing through the return oil pipeline to re-participate in the lubrication and cooling cycle. The connectivity design of the oil outlet channel 106 with the first oil channel 80 and the second oil channel 50 enables it to adapt to the oil volume requirements of different oil channels. Whether under high-speed or low-speed operating conditions, the oil outlet channel 106 can effectively collect and discharge lubricating oil to ensure efficient operation of the system under various operating conditions.

[0072] Specifically, Figure 4 , Figure 8 As shown, a second oil pipe 103 is arranged in the first oil pipe hole 22, the second oil pipe 103 is connected to the external oil delivery mechanism, the second oil pipe 103 is connected to the first oil channel 80, and the part of the second oil pipe 103 protruding from the first oil pipe hole 22 is provided with an injection port, and at least part of the injection port is arranged toward the output shaft system 3.

[0073] In some embodiments, Figure 1As shown, the first oil pipe hole 22 is arranged above the output shaft system 3, and a second oil pipe 103 is arranged in the first oil pipe hole 22. The second oil pipe 103 is connected to the first oil channel 80, and a spray port is arranged on the part of the second oil pipe 103 protruding from the first oil pipe hole 22. The spray port is arranged on the part of the second oil pipe protruding from the first oil pipe hole. The design of the spray port on the protruding part enables the lubricating oil to be sprayed in a concentrated manner, avoiding the waste caused by the lubricating oil being spread too widely. It can ensure that the lubricating oil is directly sprayed onto the key components that need cooling and lubrication, such as the bearings and gears of the output shaft. This direct spraying method reduces the flow distance and time before the lubricating oil reaches the target component, improves the efficiency and accuracy of lubrication, and can also reduce the splashing of the lubricating oil under the action of high-speed rotating components (such as gears).

[0074] A second oil pipe 103 is provided in the first oil pipe hole 22. The second oil pipe 103 is connected to an external oil delivery mechanism. Through the connection with the external oil delivery mechanism, the second oil pipe 103 can receive lubricating oil provided from the outside. The external oil delivery mechanism can adjust the delivery pressure and flow of the lubricating oil. Through the connection of the second oil pipe 103, it can be ensured that the lubricating fluid inside the transmission circulates under a suitable pressure. The provision of the external oil delivery mechanism makes the replenishment, replacement and maintenance of the lubricating oil more flexible and convenient. If the lubricating oil inside the transmission needs to be replaced or replenished, it can be done directly through an external mechanism without disassembling the internal structure of the transmission, thereby reducing maintenance costs and time.

[0075] Furthermore, if Figure 6 As shown, the transmission housing 1 is provided with an input shaft cavity 104, the input shaft system 4 is located in the input shaft cavity 104, and a third oil channel 70 connected to the oil outlet channel 106 is provided at the bottom of the input shaft cavity 104, so that the coolant after spraying the output shaft system 3 can be discharged to the outside of the transmission housing 1 through the third oil channel 70 and the oil outlet channel 106.

[0076] A third oil passage 70 connected to the oil outlet passage 106 is designed at the bottom of the input shaft cavity 104. The purpose of this oil passage is to guide the cooled lubricating oil to be discharged from the transmission housing 1 through a preset path to realize the circulation of the coolant. The coolant after the second oil passage 50 and the first oil passage 80 spray the output shaft system 3 flows into the third oil passage 70 and is discharged from the oil outlet passage 106. The discharged coolant can be collected and reused, and circulated to the inside of the transmission through the cooling system again for cooling and lubricating other components, realizing efficient recycling of the coolant and reducing energy consumption.

[0077] Specifically, a bowl plug is used to seal the end of the first oil pipe 100. The purpose of using a bowl plug to seal the end of the first oil pipe 100 is mainly to prevent lubricating oil or coolant from leaking from the end of the oil pipe in a non-working state or in a working gap. At the same time, it can also prevent external impurities from entering the oil system to a certain extent, maintaining good sealing. Bowl plug seals are usually made of elastic materials, such as rubber or silicone, and their shape can fit tightly to the oil pipe orifice to form an effective sealing surface. Bowl plug seals are low in cost and easy to replace and maintain, thereby reducing the operating and maintenance costs of the entire system.

[0078] like Fig.10 , which is a schematic diagram of the structure of the first cooling pipeline 101. The first cooling pipeline 101 is composed of three pipes connected together, all of which have openings on top, and oil can be poured in through the openings on the top. Only two of the three pipes are connected to the first oil passage 80, the second oil passage 50, and the third oil passage 70 in the drive motor shaft system 30 for cooling the drive motor. The pipe located on the upper right does not cool the drive motor, but only dissipates heat and cools the components in the surrounding area.

[0079] In some embodiments, at least one of the pipes on the first cooling pipeline 101 is provided with a positioning plate, and the positioning plate is connected to the transmission housing 1. The positioning plate can facilitate the detachable installation and fixation of the first cooling pipeline 101 in the transmission housing 1.

[0080] Furthermore, the transmission housing 1 is provided with a generator shaft system 5, and the hybrid transmission includes a second cooling pipeline 105, and a plurality of liquid spraying ports are provided on the second cooling pipeline 105, and the plurality of liquid spraying ports are respectively directed toward different regions of the generator shaft system 5, so that the second cooling pipeline 105 cools the generator shaft system 5. In this solution, the generator shaft system 5 and the drive motor shaft system 30 are two relatively independent shaft systems, and the second cooling pipeline 105 and the first cooling pipeline 101 are used to cool the two shaft systems respectively, without interfering with each other.

[0081] The generator shaft system 5 includes shaft teeth, bearings, a generator stator, and a generator resolver. The generator stator is fixed by 4 bolts for easy installation; the generator resolver is fixed to the first fixed point 211 by 3 bolts and positioned by the pin hole 20 for easy installation; the second cooling pipeline 105 is used to cool the motor stator; the motor and resolver wiring harness are also fixed to prevent the wiring harness from shaking randomly due to the high-speed operation of the transmission.

[0082] like Fig.11As shown, it is a schematic diagram of the structure of the second cooling pipeline 105. The second cooling pipeline 105 is composed of three pipes connected, and multiple liquid spraying ports are arranged on the three pipes. The three pipes are arranged around the generator stator and arranged above the generator stator. The second cooling pipeline 105 is connected with a corresponding oil channel below. The oil flows through the channel into the second cooling pipeline 105 and is sprayed out from the liquid spraying port. The liquid spraying port on the second cooling pipeline 105 can cover the entire area of ​​the generator shaft system 5. The design of the liquid spraying port enables the lubricating oil to be directly sprayed to a specific part of the generator shaft system 5 at a certain pressure and flow rate, thereby enhancing the cooling effect, improving the cooling efficiency, and avoiding the performance degradation and possible damage of the generator shaft system 5 due to overheating when the generator shaft system 5 is running at high speed.

[0083] In some embodiments, at least one of the pipes on the second cooling line 105 is provided with a positioning plate, and the positioning plate is connected to the transmission housing 1. The positioning plate can facilitate the detachable installation and fixation of the second cooling line 105 in the transmission housing 1.

[0084] It needs to be further explained that if Figure 3 As shown, the two suspensions 10 designed around the two sides of the transmission housing 1, and the radial divergence and thicker reinforcement ribs 120 arranged around each suspension 10, the combined design of the suspension 10 and the reinforcement ribs 120 provide a stable support and fixation for the transmission, and work together to enhance the structural strength of the housing. The reinforcement ribs 120 are designed as a radial divergence structure, which can evenly distribute the load on the suspension 10 to a larger area of ​​the transmission housing 1, avoiding local stress concentration, thereby effectively improving the pressure resistance and rigidity of the housing, reducing vibration and deformation, and extending the service life of the housing. Thin and short cross ribs 900 are arranged in the drive motor cavity 102, which ensures that the housing has sufficient strength while also considering lightweight design, reducing manufacturing costs and overall weight. The thicker radial divergence reinforcement ribs 120 and the thin and short cross ribs 900 not only increase the strength of the housing, but also play a role in noise reduction. The cross ribs 900 can absorb and disperse vibration energy, reduce noise generation, and improve the driver's comfort experience. The reinforcing ribs 120 can also prevent the first cooling pipeline 101 and the second cooling pipeline 105 from splashing impurities such as iron filings in the lubricating oil onto the copper wire of the generator during splash lubrication, thereby avoiding damage to the enameled wire of the generator.

[0085] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0086] 1. Through the integration of active lubrication and splash lubrication, multiple oil channels are designed on the transmission housing. The oil flows along the oil channel path to ensure that the internal components of the hybrid transmission, especially the generator shaft system and the drive motor shaft system, can be fully lubricated and cooled. The first cooling pipeline is designed for directional cooling of the drive motor shaft system. The setting of the second cooling pipeline and its multiple spray ports realizes directional cooling of the generator shaft system, improves cooling efficiency, and avoids performance problems caused by overheating.

[0087] 2. By integrating the oil guide structure, reinforcement ribs and cooling pipes on the transmission housing, the assembly process is simplified, the production cost is reduced, the complexity and frequency of maintenance are reduced, and the reliability of the system is improved.

[0088] The above embodiments may also be used in the field of equipment technology. That is, according to another aspect of the present invention, a vehicle is provided, comprising a hybrid transmission. The hybrid transmission is the hybrid transmission described in the above embodiments.

[0089] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0090] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0091] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hybrid transmission, characterized in that: The hybrid transmission comprises a transmission housing (1), an input shaft system (4), and an intermediate shaft system (2): The transmission housing (1) is provided with a first oil pipe hole (22) and an oil channel hole (26). The transmission housing (1) is provided with a first oil channel (80). The first oil pipe hole (22) forms the head end of the first oil channel (80). The oil channel hole (26) forms the tail end of the first oil channel (80). The first oil channel (80) is used to cool the intermediate shaft system (2). A first oil pipe (100) is provided in the oil channel hole (26). The first oil pipe (100) is connected to the first oil channel (80). The first oil pipe (100) has a spray portion facing the input shaft system (4). The spray portion is used to cool the input shaft system (4).

2. The hybrid transmission according to claim 1, characterized in that: The hybrid transmission further comprises a drive motor shaft system (30), the input shaft system (4) and the intermediate shaft system (2) are located on the same side of the transmission housing (1), and the drive motor shaft system (30) is located on the other side of the transmission housing (1) opposite to the input shaft system (4). The hybrid transmission further comprises a first cooling pipeline (101), the first cooling pipeline (101) is connected to the transmission housing (1), an inlet end of the first cooling pipeline (101) is communicated with the first oil channel (80), and a plurality of injection ports are arranged on the first cooling pipeline (101), and each of the injection ports is arranged toward a different area of ​​the drive motor shaft system (30).

3. The hybrid transmission according to claim 2, characterized in that: The transmission housing (1) forms a drive motor cavity (102), the drive motor shaft system (30) is located in the drive motor cavity (102), and an oil return hole (130) is provided at the bottom of the drive motor cavity (102), wherein the coolant sprayed through the injection port enters the oil return hole (130) after performing a cooling task on the drive motor shaft system (30).

4. The hybrid transmission according to claim 1, characterized in that: The hybrid transmission comprises an output shaft system (3), and the transmission housing (1) is further provided with a second oil passage (50), the inlet end of the second oil passage (50) forms a second oil pipe hole (25), the outlet end of the second oil passage (50) is connected to the middle part of the first oil passage (80), and the second oil passage (50) is used to cool at least one of the intermediate shaft system (2) and the output shaft system (3).

5. The hybrid transmission according to claim 4, characterized in that: The transmission housing (1) is provided with an oil outlet passage (106), the input end of the oil outlet passage (106) being in communication with the rear end of the first oil passage (80), and the output end of the oil outlet passage (106) forming an opening so that the oil outlet passage (106) can guide the oil in at least one of the first oil passage (80) and the second oil passage (50) to the outside of the transmission housing (1).

6. The hybrid transmission according to claim 5, characterized in that: A second oil pipe (103) is arranged in the first oil pipe hole (22), the second oil pipe (103) is connected to an external oil delivery mechanism, the second oil pipe (103) is connected to the first oil channel (80), and a portion of the second oil pipe (103) protruding from the first oil pipe hole (22) is provided with an injection port, and at least part of the injection port is arranged toward the output shaft system (3).

7. The hybrid transmission according to claim 6, characterized in that: The transmission housing (1) is provided with an input shaft cavity (104), the input shaft system (4) is located in the input shaft cavity (104), and a third oil passage (70) connected to the oil outlet passage (106) is provided at the bottom of the input shaft cavity (104), so that the coolant after spraying the output shaft system (3) is discharged to the outside of the transmission housing (1) through the third oil passage (70) and the oil outlet passage (106).

8. The hybrid transmission according to claim 1, characterized in that: The end of the first oil pipe (100) is sealed with a bowl plug.

9. The hybrid transmission according to claim 1, characterized in that: A generator shaft system (5) is arranged in the transmission housing (1), and the hybrid transmission comprises a second cooling pipeline (105). A plurality of liquid spraying ports are arranged on the second cooling pipeline (105), and the plurality of liquid spraying ports are respectively directed toward different areas of the generator shaft system (5), so that the second cooling pipeline (105) cools the generator shaft system (5).

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

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