Vehicle transmission and vehicle having the same

Abstract

The application provides a vehicle transmission device and a vehicle with the same. The vehicle transmission device comprises a generator housing, a driving motor housing, an intermediate support structure, a mechanical pump installation cavity, a mechanical pump oil suction channel, an electronic pump oil suction channel, an electronic pump oil outlet channel, a mechanical pump oil suction port, a mechanical pump oil outlet port, an oil filter interface and an oil outlet hole. The mechanical pump installation cavity is provided in the intermediate support structure, and the mechanical pump installation cavity is provided with the mechanical pump oil suction port and the mechanical pump oil outlet port. The intermediate support structure is provided with the oil filter interface and the oil outlet hole. The mechanical pump oil suction port is communicated with the oil filter interface through the mechanical pump oil suction channel. The mechanical pump is arranged in the mechanical pump installation cavity and communicated with the inner cavity of the driving motor housing through the mechanical pump oil outlet port. At least part of the electronic pump extends into the driving motor housing through the assembly hole and is connected with the intermediate support structure. The oil inlet of the electronic pump is communicated with the oil filter interface through the electronic pump oil suction channel. The oil outlet of the electronic pump is communicated with the inner cavity of the driving motor housing through the electronic pump oil outlet channel and the oil outlet hole.

Description

Technical Field

[0001] This invention relates to the field of vehicle transmission technology, and more specifically, to a vehicle transmission device and a vehicle having the same. Background Technology

[0002] In current technology, most hybrid drive systems employ a single mechanical pump or a single electric pump. Models with a single mechanical pump only operate when the engine is running, supplying cooling and lubrication to the entire system. When the engine is not running, cooling and lubrication rely solely on splashing, making prolonged high-load operation in pure electric mode impossible. Some models use a single electric pump for fuel supply. However, electric pumps present a trade-off between cost and fuel supply capacity: low-pressure electric pumps are low-cost and low-power, while high-pressure electric pumps are high-power and high-cost.

[0003] In addition, due to the configuration of the transmission device, the oil pump in the oil supply structure of the longitudinal hybrid transmission device is difficult to arrange and occupies a large space. Due to the internal space limitation, the electronic pump of the longitudinal hybrid transmission device is generally directly mounted on the outside of the housing, and the high-pressure and low-pressure oil circuits are sealed with sealing rings. This solution has a high risk of oil leakage.

[0004] There is currently no effective solution to the technical problem that the oil supply structure of the aforementioned transmission device cannot simultaneously balance cost, performance, and internal space arrangement. Summary of the Invention

[0005] The main objective of this invention is to provide a vehicle transmission device and a vehicle having the same, so as to solve the technical problem that the oil supply structure of the transmission device in the prior art cannot take into account cost, performance and internal space arrangement.

[0006] To achieve the above objectives, according to one aspect of the present invention, a vehicle transmission device is provided, comprising: a generator housing, wherein a generator is disposed within the generator housing, and the generator housing has an assembly hole; a drive motor housing, wherein the drive motor housing is connected to the generator housing, and a drive motor and an intermediate support structure are disposed within the drive motor housing, the intermediate support structure being disposed close to the generator housing, and the intermediate support structure having a mechanical pump mounting cavity, a mechanical pump suction passage, an electronic pump suction passage, and an electronic pump outlet passage therein, the mechanical pump mounting cavity having a mechanical pump suction port and a mechanical pump outlet, and the intermediate support structure... The structure includes an oil filter interface and at least one oil outlet. The mechanical pump suction port is connected to the oil filter interface through the mechanical pump suction channel. The mechanical pump is located in the mechanical pump mounting cavity and is connected to the inner cavity of the drive motor housing through the mechanical pump oil outlet. The mechanical pump is also connected to the mechanical pump suction port. At least a portion of the electronic pump extends through the mounting hole into the drive motor housing and is connected to the intermediate support structure. The electronic pump inlet is connected to the oil filter interface through the electronic pump suction channel, and the electronic pump outlet is connected to the inner cavity of the drive motor housing through the electronic pump outlet channel and one of the oil outlet holes.

[0007] Furthermore, the intermediate support structure is also provided with an electronic pump oil inlet and an electronic pump oil outlet. The electronic pump oil inlet is connected to the electronic pump suction channel, and the electronic pump oil outlet is connected to the electronic pump oil outlet channel. At least a portion of the electronic pump extends into the electronic pump oil inlet so that the electronic pump inlet is connected to the electronic pump oil inlet, and at least a portion of the electronic pump extends into the electronic pump oil outlet so that the electronic pump outlet is connected to the electronic pump oil outlet.

[0008] Furthermore, a main oil suction channel is provided within the intermediate support structure. The first end of the main oil suction channel is connected to the oil suction port of the mechanical pump, and the second end of the main oil suction channel is connected to the oil inlet interface of the electronic pump. A main oil inlet channel is provided on the side wall of the main oil suction channel, and the main oil inlet channel is connected to the oil filter interface.

[0009] Furthermore, the mechanical pump and the electronic pump are respectively located on opposite sides of the intermediate support structure.

[0010] Furthermore, the vehicle transmission device also includes: a first transmission component, which is disposed on the intermediate support structure and connected to the mechanical pump; and a second transmission component, which is disposed inside the drive motor housing and connected to the engine; the second transmission component is connected to the first transmission component for transmission, and the engine drives the second transmission component to move, which in turn drives the first transmission component to move, thereby causing the mechanical pump to move.

[0011] Furthermore, the first transmission component is a mechanical pump driven gear, and the second transmission component is a mechanical pump driving gear. The mechanical pump driving gear meshes with the mechanical pump driven gear, and the mechanical pump driving gear is connected to the engine. The engine drives the mechanical pump to move through the mechanical pump driving gear and the mechanical pump driven gear.

[0012] Furthermore, the electronic pump includes: an electronic pump body; two electronic pump connecting parts, the first end of which is connected to the electronic pump body, and the second end of which is connected to the intermediate support structure. The second end of one electronic pump connecting part forms the oil inlet of the electronic pump, and the second end of the other electronic pump connecting part forms the oil outlet of the electronic pump. At least a portion of the electronic pump body extends through the mounting hole into the drive motor housing.

[0013] Furthermore, the electronic pump body and the generator housing are clearance-fitted.

[0014] Furthermore, the electronic pump also includes: an assembly, which is disposed on the outer peripheral surface of the electronic pump body. An annular sealing groove is provided on the end face of the assembly facing the generator housing. A sealing ring is provided in the annular sealing groove. When at least part of the electronic pump body extends through the assembly hole into the drive motor housing, the sealing ring abuts against the generator housing, and the assembly is connected to the generator housing.

[0015] Furthermore, a sealing ring is provided on the outer peripheral surface of the electronic pump connection.

[0016] According to another aspect of the present invention, a vehicle is provided, the vehicle having a vehicle transmission device, the vehicle transmission device being the vehicle transmission device described above.

[0017] By applying the technical solution of this invention, a mechanical pump and an electronic pump are simultaneously installed in the transmission device. Compared with a single mechanical pump and an electronic pump, the combination of mechanical and electronic pumps balances cost and performance. At the same time, the mechanical pump is installed in the intermediate support structure of the drive motor housing, while the electronic pump is arranged externally with its oil inlet and outlet extending into the intermediate support structure. This reduces the risk of oil leakage from the electronic pump and also reduces the space occupied by the electronic and mechanical pumps. This solution effectively solves the technical problem that the oil supply structure of the transmission device in the prior art cannot balance cost, performance, and internal space arrangement. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of a first embodiment of a vehicle transmission device according to the present invention is shown;

[0020] Figure 2 A schematic diagram of a second embodiment of a vehicle transmission device according to the present invention is shown;

[0021] Figure 3 A schematic diagram of a first embodiment of the intermediate support structure according to the present invention is shown;

[0022] Figure 4 A schematic diagram of a third embodiment of a vehicle transmission device according to the present invention is shown;

[0023] Figure 5 A schematic diagram of a second embodiment of the intermediate support structure according to the present invention is shown;

[0024] Figure 6 A schematic diagram of a fourth embodiment of a vehicle transmission device according to the present invention is shown;

[0025] Figure 7 A schematic diagram of an embodiment of the electronic pump according to the present invention is shown;

[0026] Figure 8 A schematic diagram of a fifth embodiment of a vehicle transmission device according to the present invention is shown.

[0027] The above figures include the following reference numerals:

[0028] 1. Generator housing; 100. Assembly hole;

[0029] 2. Drive motor housing;

[0030] 3. Intermediate support structure;

[0031] 4. Mechanical pump; 5. Driven gear of mechanical pump; 6. Driven gear of mechanical pump;

[0032] 7. Support base plate; 8. Support cover plate;

[0033] 9. Mechanical pump suction port; 10. Mechanical pump discharge port; 11. Electronic pump suction channel; 12. Electronic pump discharge channel; 13. Electronic pump inlet port; 14. Electronic pump outlet port;

[0034] 15. Oil filter interface;

[0035] 16. Electronic pump; 161. Electronic pump body; 162. Electronic pump connection part; 163. Assembly parts;

[0036] 17. Sealing ring; 18. Sealing ring. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0039] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0040] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0041] To facilitate the explanation of the technical solution of this application, the existing vehicle transmission device is described as follows:

[0042] The development of new energy transmission systems is rapid, with various companies focusing their efforts in this direction. Longitudinal hybrid transmission systems are an important branch within this field, showing broad market prospects in pickup trucks and light commercial vehicles. Currently, the mainstream longitudinal hybrid transmission systems adopt range-extender technology and transmissions with series or parallel power splitting. In automobiles, the transmission system is the core component of the drivetrain. Its main function is to transmit the power output from the engine and electric motor to the half-shafts and drive the wheels after speed and torque conversion. Common transmission components include gearboxes, drive axles, and reducers.

[0043] The general structure of an automotive transmission consists of a housing and gear transmission within the housing's mounting cavity, along with related structures such as an oil pump, valve body, and oil seals. Many mainstream hybrid transmissions currently feature multiple gears, with gear shifting typically accomplished by hydraulic actuators. This places high demands on the oil pump's supply pressure and flow rate. Furthermore, the electric motor in a hybrid transmission requires significant heat dissipation. Current hybrid transmissions generally employ a dual-motor design, with one motor primarily generating electricity and the other primarily driving the vehicle. These two motors require separate, relatively independent cooling systems. Oil cooling is typically used for the motors, and this requires a relatively high lubricating oil flow rate. The oil pump plays a crucial role in hybrid transmissions, being a vital functional component. However, the lubricating oil requirements vary depending on the operating conditions. For example, when a vehicle is operating in hybrid mode, the hydraulic actuator is always involved, and sufficient lubricating oil pressure and flow rate significantly impact power transmission and lubrication. In pure electric mode, only the electric motor drives the vehicle, requiring only lubrication and cooling oil. This requirement is more sensitive to lubricating oil flow rate and less demanding on lubricating oil pressure. At the same time, the automotive industry is currently facing intense competition, making cost reduction a key focus for every company, especially in research and development where a constant cost-conscious approach is essential. High-pressure electronic pumps offer superior performance but are more expensive, while mechanical pumps are cheaper but may not be used in certain operating conditions.

[0044] In other words, in the existing technology, vehicle transmission systems that only have mechanical pumps have the problem that their performance cannot meet the current transmission system and vehicle requirements, while vehicle transmission systems that only have electronic pumps have the problem of high cost. In some vehicle transmission systems that have both mechanical and electronic pumps, due to internal structural limitations, the electronic and mechanical pumps are difficult to install, and the electronic pump is usually suspended on the outside, which poses a risk of oil leakage.

[0045] Combination Figures 1 to 8 As shown, according to a specific embodiment of this application, a vehicle transmission device is provided.

[0046] Specifically, the vehicle transmission device includes a generator housing 1, a drive motor housing 2, a mechanical pump 4, and an electronic pump 16. The generator housing 1 houses a generator and has an assembly hole 100. The drive motor housing 2 is connected to the generator housing 1 and houses a drive motor and an intermediate support structure 3. The intermediate support structure 3 is located close to the generator housing 1 and contains a mechanical pump mounting cavity, a mechanical pump suction passage, an electronic pump suction passage 11, and an electronic pump outlet passage 12. The mechanical pump mounting cavity has a mechanical pump suction port 9 and a mechanical pump outlet 10. The intermediate support structure 3 has an oil... The system includes an oil filter port 15 and at least one oil outlet. The mechanical pump suction port 9 is connected to the oil filter port 15 through the mechanical pump suction passage. The mechanical pump 4 is disposed in the mechanical pump mounting cavity and is connected to the inner cavity of the drive motor housing 2 through the mechanical pump oil outlet 10. The mechanical pump 4 is also connected to the mechanical pump suction port 9. At least a portion of the electronic pump 16 extends through the mounting hole 100 into the drive motor housing 2 and is connected to the intermediate support structure 3. The oil inlet of the electronic pump 16 is connected to the oil filter port 15 through the electronic pump suction passage 11, and the oil outlet of the electronic pump 16 is connected to the inner cavity of the drive motor housing 2 through the electronic pump oil outlet passage 12 and one of the oil outlet holes.

[0047] By applying the technical solution of this embodiment, a mechanical pump 4 and an electronic pump 16 are simultaneously installed in the transmission device. Compared with a single mechanical pump 4 and electronic pump 16, the combination of mechanical pump 4 and electronic pump 16 balances cost and performance. At the same time, the mechanical pump 4 is installed in the intermediate support structure 3 of the drive motor housing 2, while the electronic pump 16 is arranged externally with its oil inlet and outlet extending into the intermediate support structure 3. This reduces the risk of oil leakage from the electronic pump 16 and also reduces the space occupied by the mechanical pump 4 and electronic pump 16. This solution effectively solves the technical problem that the oil supply structure of the transmission device in the prior art cannot balance cost, performance, and internal space arrangement.

[0048] It should be noted that in this embodiment, the mechanical pump 4 and the electronic pump 16 can supply oil to the hydraulic system of the transmission device individually or jointly. The vehicle transmission device is a longitudinally mounted hybrid transmission device, preferably a longitudinally mounted hybrid transmission. The electronic pump 16 is preferably a low-pressure electronic pump, which is less expensive than a high-pressure electronic pump.

[0049] Furthermore, the intermediate support structure 3 is also provided with an electronic pump oil inlet interface 13 and an electronic pump oil outlet interface 14. The electronic pump oil inlet interface 13 is connected to the electronic pump oil suction channel 11, and the electronic pump oil outlet interface 14 is connected to the electronic pump oil outlet channel 12. At least a portion of the electronic pump 16 extends into the electronic pump oil inlet interface 13 so that the oil inlet of the electronic pump 16 is connected to the electronic pump oil inlet interface 13, and at least a portion of the electronic pump 16 extends into the electronic pump oil outlet interface 14 so that the oil outlet of the electronic pump 16 is connected to the electronic pump oil outlet interface 14.

[0050] In this embodiment, the electronic pump inlet port 13 and the electronic pump outlet port 14 are spaced apart along the height direction of the intermediate support structure 3 to further save the installation space of the electronic pump 16 and make the structure more compact. During installation, only part of the electronic pump 16 needs to be aligned with the electronic pump inlet port 13 and the electronic pump outlet port 14 and inserted, making assembly easy and the structure simple.

[0051] Preferably, a main oil suction channel is provided in the intermediate support structure 3. The first end of the main oil suction channel is connected to the mechanical pump oil suction port 9, and the second end of the main oil suction channel is connected to the electronic pump oil inlet interface 13. A main oil inlet channel is provided on the side wall of the main oil suction channel, and the main oil inlet channel is connected to the oil filter interface 15.

[0052] In this embodiment, part of the main suction channel and the main inlet channel constitute the mechanical pump suction channel, and another part of the main suction channel and the main inlet channel constitute the electronic pump suction channel 11. That is, the mechanical pump 4 and the electronic pump 16 share the main inlet channel and the main suction channel, which can simplify the internal structure of the intermediate support structure 3.

[0053] It should be understood that, depending on actual needs, the mechanical pump suction channel and the electronic pump suction channel 11 can also be two independent oil channels.

[0054] Optionally, the mechanical pump 4 and the electronic pump 16 are respectively disposed on opposite sides of the intermediate support structure 3.

[0055] In this embodiment, by placing the mechanical pump 4 and the electronic pump 16 on opposite sides, the spatial arrangement is more convenient, the structural arrangement of the intermediate support structure 3 is easier, and the mutual interference between parts is avoided.

[0056] In the exemplary embodiment of this application, the mechanical pump 4 is eccentrically arranged, and the mechanical pump 4 and the electronic pump 16 share the main oil inlet and main oil suction passages. The mechanical pump 4 and the electronic pump 16 are respectively arranged on the lower parts of the left and right sides of the intermediate support structure 3. The oil filter is installed on the intermediate support structure 3 through the oil filter interface 15, which is located at the bottom of the intermediate support structure 3. The lubricating oil enters the oil pump (including the mechanical pump 4 and the electronic pump 16) through the intermediate support structure 3 and finally enters the valve body.

[0057] Specifically, the vehicle transmission device also includes a first transmission component and a second transmission component. The first transmission component is disposed on the intermediate support structure 3 and is connected to the mechanical pump 4. The second transmission component is disposed inside the drive motor housing 2 and is connected to the engine. The second transmission component is connected to the first transmission component for transmission. The engine drives the second transmission component to move, which in turn drives the first transmission component to move, thereby causing the mechanical pump 4 to move.

[0058] In this embodiment, the mechanical pump 4 is driven by the second transmission component, the first transmission component, and the engine. That is, when the vehicle is driven by the engine, the mechanical pump 4 can be driven at the same time to meet the greater lubrication and cooling requirements in the engine drive mode.

[0059] Preferably, the first transmission component is the mechanical pump driven gear 5, and the second transmission component is the mechanical pump driving gear 6. The mechanical pump driving gear 6 meshes with the mechanical pump driven gear 5. The mechanical pump driving gear 6 is connected to the engine, and the engine drives the mechanical pump 4 to move through the mechanical pump driving gear 6 and the mechanical pump driven gear 5.

[0060] In this embodiment, gear transmission is used to drive the engine and the mechanical pump 4. The operating characteristics of the mechanical pump 4 can be adjusted by regulating the gear parameters. Gear transmission is smooth, simple in structure, low in cost, and convenient to use and maintain. Alternatively, gear-chain transmission can also be used to drive the engine and the mechanical pump 4.

[0061] Furthermore, the electronic pump 16 includes an electronic pump body 161 and an electronic pump connection portion 162. There are two electronic pump connection portions 162. The first end of the electronic pump connection portion 162 is connected to the electronic pump body 161, and the second end of the electronic pump connection portion 162 is connected to the intermediate support structure 3. The second end of one electronic pump connection portion 162 forms the oil inlet of the electronic pump 16, and the second end of the other electronic pump connection portion 162 forms the oil outlet of the electronic pump 16. At least a portion of the electronic pump body 161 extends through the mounting hole 100 into the drive motor housing 2.

[0062] In this embodiment, during assembly, the electronic pump connection part 162 only needs to be inserted into the electronic pump oil inlet port 13 and electronic pump oil outlet port 14 of the corresponding intermediate support structure 3 to successfully connect the electronic pump 16, making the assembly process convenient and efficient.

[0063] Preferably, the electronic pump body 161 and the generator housing 1 are clearance-fitted. In this embodiment, the clearance fit makes the electronic pump body 161 and the generator housing 1 less sensitive to assembly errors during assembly, and facilitates assembly and disassembly.

[0064] Furthermore, the electronic pump 16 also includes an assembly 163, which is disposed on the outer peripheral surface of the electronic pump body 161. An annular sealing groove is formed on the end face of the assembly 163 facing the generator housing 1, and a sealing ring 18 is disposed within the annular sealing groove. When at least a portion of the electronic pump body 161 extends through the assembly hole 100 into the drive motor housing 2, the sealing ring 18 abuts against the generator housing 1, and the assembly 163 is connected to the generator housing 1. In this embodiment, the sealing ring 18 is compressed during the assembly of the electronic pump 16, and the sealing ring 18 can perform a sealing function, reducing the risk of oil leakage.

[0065] In the exemplary embodiment of this application, the assembly 163 is connected to the generator housing 1 by bolts.

[0066] Preferably, a sealing ring 17 is provided on the outer peripheral surface of the electronic pump connection part 162. By providing the sealing ring 17, the electronic pump 16 can be positioned and the oil inlet and outlet can be sealed, reducing the risk of oil leakage.

[0067] The vehicle transmission device in the above embodiments has the following advantages: the combination of mechanical pump and electronic pump to supply oil to the hydraulic system of the longitudinally mounted hybrid transmission device balances cost and performance; the structural characteristics of the longitudinally mounted hybrid transmission are fully utilized to arrange the electronic pump and mechanical pump in reasonable positions and share the same oil suction line, which occupies little space and is not obtrusive; the electronic pump is installed externally on the outside of the housing, which is simple and reasonable in structure and has a very low risk of oil leakage.

[0068] This application also provides a preferred embodiment of a vehicle transmission device, wherein the vehicle transmission device in this embodiment is a longitudinally mounted rear-wheel drive hybrid transmission device.

[0069] Specifically, in this embodiment, the vehicle transmission device includes a generator housing 1, a drive motor housing 2, a mechanical pump 4, and an electronic pump 16.

[0070] The generator housing 1 is located near the engine side and houses a generator motor, which can be a generator itself. The drive motor housing 2 houses a drive motor and an intermediate support structure 3. A mechanical pump 4 is mounted on the intermediate support structure 3. The mechanical pump 4 can be mounted on the lower left or lower right side of the transmission device; in this embodiment, it is mounted on the lower right side. The mechanical pump 4 has a driven gear 5 that drives its operation. The driven gear 5 meshes with a drive gear 6, which is connected to the engine to obtain driving force. It should be understood that the power transmission of the mechanical pump includes, but is not limited to, gear and chain transmission; in this embodiment, gear transmission is used. The electronic pump 16 can be mounted on the lower left or lower right side of the transmission device; in this embodiment, it is mounted on the lower left side. A sealing ring 17 is installed on the oil inlet and outlet ports of the electronic pump 16, and a sealing ring 18 is present on the mating surface between the electronic pump 16 and the generator housing 1.

[0071] Specifically, the generator housing 1 is formed by methods including but not limited to machining and casting. It is fitted with a motor, motor cable interface, and resolver interface. In this embodiment, the generator housing 1 has an electronic pump mounting interface, i.e., assembly hole 100. The generator housing 1 is connected to the drive motor housing 2 by bolts.

[0072] Specifically, the drive motor housing 2 is formed by methods including but not limited to machining and casting. It has a motor and motor cable interface mounted on it, and its lower part integrates part of the valve body structure. The drive motor housing 2 and another valve plate together form the valve body of the transmission device.

[0073] Specifically, the intermediate support structure 3 is formed by methods including but not limited to machining and casting. The intermediate support structure 3 is composed of a support base plate 7 and a support cover plate 8, which are installed together by bolts. The intermediate support structure 3 has a mechanical pump suction port 9, a mechanical pump outlet port 10, an electronic pump suction channel 11, an electronic pump outlet channel 12, an electronic pump inlet port 13, an electronic pump outlet port 14, and an oil filter port 15.

[0074] The oil supply principle of the transmission device in this embodiment is as follows:

[0075] 1) Mechanical pump oil supply route: The engine rotation drives the mechanical pump drive gear 6 to rotate, and transmits power to the mechanical pump driven gear 5. The lubricating oil is drawn in through the oil filter and reaches the oil filter interface 15, then enters the intermediate support structure 3, flows through the mechanical pump suction port 9, enters the mechanical pump 4, and finally enters the valve body of the drive motor housing 2 through the mechanical pump outlet 10 to complete the oil supply.

[0076] 2) Electronic pump oil supply route: After the electronic pump 16 starts, the lubricating oil enters the intermediate support structure 3 through the same oil passage as the mechanical pump. At this time, the mechanical pump 4 does not start. The lubricating oil enters the electronic pump 16 through the electronic pump suction passage 11, and after being pressurized, it enters the intermediate support structure 3 from the electronic pump outlet, and enters the valve body part of the drive motor housing 2 through the electronic pump outlet passage 12 to complete the oil supply.

[0077] Specifically, existing electronic pumps typically employ an external or internal design, requiring only one housing component for installation. Furthermore, the inlet and outlet ports of external electronic pumps are directly connected to the housing's inlet and outlet ports, using a surface-to-surface seal. However, the electronic pump's outlet is generally a high-pressure port; even a minor seal defect can lead to oil leakage. While this may not affect the transmission mechanism's function in the short term, merely creating surface oil stains, long-term leakage can cause transmission failure.

[0078] The installation method of the electronic pump 16 in this embodiment is as follows: The electronic pump 16 is inserted from the engine direction towards the rear end during installation. The completed structure (see...) Figure 1 and Figure 2 The outer cylindrical surface near the oil inlet and outlet of the electronic pump has a clearance fit with the generator housing 1 (see...). Figure 6The gap between the inlet and outlet ports of the electronic pump 16 is relatively large and does not participate in the installation and positioning of the electronic pump 16. The inlet and outlet ports of the electronic pump 16 are inserted into the electronic pump inlet and outlet ports (i.e., electronic pump inlet interface 13 and electronic pump outlet interface 14) on the intermediate support structure 3. Since there is a sealing requirement between the inlet and outlet ports of the electronic pump 16 and the electronic pump inlet and outlet ports on the intermediate support structure 3, the positioning accuracy of the two ports at this point is high. To ensure the seal, a sealing ring 17 is installed on the inlet and outlet ports of the electronic pump 16. The inlet and outlet ports of the electronic pump 16, the electronic pump inlet and outlet ports on the intermediate support structure 3, and the sealing ring 17 together complete the positioning of the electronic pump 16 and the sealing of the inlet and outlet ports. Since the inlet and outlet ports of the electronic pump 16 and the electronic pump inlet and outlet ports on the intermediate support structure 3 are shaft-hole fits with a large axial allowance, they are not sensitive to axial accuracy, reducing the risk of assembly interference. The electric pump 16 is sealed to the generator housing 1 using a sealing ring seal. Specifically, the generator housing 1 has an annular surface that mates with the sealing ring 18. During installation, the mounting surface of the electric pump 16 fits against the mating surface of the generator housing 1, compressing the sealing ring 18 and achieving a seal. Because the annular surface on the generator housing 1 that mates with the sealing ring 18 is relatively large, it is not sensitive to radial positional misalignment of the electric pump caused by assembly errors between the generator housing 1, the drive motor housing 2, and the intermediate support structure 3, thus providing a good sealing effect. Finally, the electric pump 16 is installed by bolting it through the generator housing 1 and onto the drive motor housing 2.

[0079] In this embodiment, the structure is easy to install and insensitive to various assembly errors. The oil inlet and outlet ports of the electronic pump are connected to the oil inlet and outlet ports of the housing inside the housing. Even minor oil leaks will remain inside the housing and will not cause external leakage, thus not affecting the system's functionality and greatly improving system reliability. Furthermore, the electronic pump body 161 is located outside the transmission device, which is beneficial for heat dissipation of the electronic pump 16. The arrangement and installation structure of the electronic pump 16 in this embodiment differ from the electronic pump installation structure in the prior art, offering advantages such as convenient installation and disassembly, lower risk of oil leakage, and good heat dissipation for the electronic pump.

[0080] In existing technologies, longitudinally mounted rear-wheel-drive hybrid transmission devices have a roughly circular cross-sectional shape due to the large size of the motor. The upper part of the transmission device, being part of the vehicle body, has very limited space, making it unsuitable for arranging fuel supply structures such as the mechanical pump 4 and the electronic pump 16. In the vehicle transmission device of this embodiment, the electronic pump 16 and the mechanical pump 4 are arranged on the left and right sides below the motor, occupying less space. Since the fuel supply system uses dual power sources, it can supply fuel to the entire system under various operating conditions. Furthermore, in existing technologies, using a high-pressure electronic pump alone is costly, while using a mechanical pump may not be possible under certain conditions. This embodiment uses a mechanical pump-low-pressure electronic pump scheme as the fuel supply solution for the transmission device, balancing cost and functionality.

[0081] According to another specific embodiment of this application, a vehicle is provided, the vehicle having a vehicle transmission device, which is the vehicle transmission device in the above embodiment.

[0082] The vehicle transmission device described in the above embodiments, with both mechanical and electronic pumps, allows the hydraulic system of the vehicle transmission device to balance cost and performance. The vehicle is preferably a hybrid vehicle. Using the vehicle transmission device in this embodiment can reduce vehicle manufacturing costs while meeting the different lubrication and cooling oil requirements of the vehicle in different modes such as hybrid and pure electric modes.

[0083] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0084] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0085] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0086] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vehicle transmission device, characterized in that, include: A generator housing (1) is provided inside the generator housing (1), and an assembly hole (100) is provided on the generator housing (1); A drive motor housing (2) is connected to the generator housing (1). The drive motor housing (2) contains a drive motor and an intermediate support structure (3). The intermediate support structure (3) is located close to the generator housing (1). The intermediate support structure (3) contains a mechanical pump mounting cavity, a mechanical pump suction channel, an electronic pump suction channel (11), and an electronic pump outlet channel (12). The mechanical pump mounting cavity has a mechanical pump suction port (9) and a mechanical pump outlet (10). The intermediate support structure (3) has an oil filter interface (15) and at least one oil outlet hole. The mechanical pump suction port (9) is connected to the oil filter interface (15) through the mechanical pump suction channel. Mechanical pump (4), the mechanical pump (4) is disposed in the mechanical pump mounting cavity, and the mechanical pump (4) is connected to the inner cavity of the drive motor housing (2) through the mechanical pump oil outlet (10), and the mechanical pump (4) is connected to the mechanical pump suction port (9); An electronic pump (16), at least a portion of which extends through the mounting hole (100) into the drive motor housing (2) and is connected to the intermediate support structure (3), wherein the oil inlet of the electronic pump (16) is connected to the oil filter interface (15) through the electronic pump suction channel (11), and the oil outlet of the electronic pump (16) is connected to the inner cavity of the drive motor housing (2) through the electronic pump oil outlet channel (12) and one of the oil outlet holes.

2. The vehicle transmission device according to claim 1, characterized in that, The intermediate support structure (3) is also provided with an electronic pump oil inlet port (13) and an electronic pump oil outlet port (14). The electronic pump oil inlet port (13) is connected to the electronic pump oil suction channel (11), and the electronic pump oil outlet port (14) is connected to the electronic pump oil outlet channel (12). At least a portion of the electronic pump (16) extends into the electronic pump oil inlet port (13) so that the oil inlet of the electronic pump (16) is connected to the electronic pump oil inlet port (13). At least a portion of the electronic pump (16) extends into the electronic pump oil outlet port (14) so ​​that the oil outlet of the electronic pump (16) is connected to the electronic pump oil outlet port (14).

3. The vehicle transmission device according to claim 2, characterized in that, The intermediate support structure (3) has a main oil suction channel. The first end of the main oil suction channel is connected to the mechanical pump oil suction port (9), and the second end of the main oil suction channel is connected to the electronic pump oil inlet interface (13). The main oil inlet channel is provided on the side wall of the main oil suction channel and is connected to the oil filter interface (15).

4. The vehicle transmission device according to claim 1, characterized in that, The mechanical pump (4) and the electronic pump (16) are respectively disposed on opposite sides of the intermediate support structure (3).

5. The vehicle transmission device according to claim 1, characterized in that, The vehicle transmission device also includes: The first transmission component is disposed on the intermediate support structure (3) and is connected to the mechanical pump (4); The second transmission component is disposed inside the drive motor housing (2) and is connected to the engine; The second transmission component is connected to the first transmission component for transmission. The engine drives the second transmission component to move, which in turn drives the first transmission component to move, thereby causing the mechanical pump (4) to move.

6. The vehicle transmission device according to claim 5, characterized in that, The first transmission component is a mechanical pump driven gear (5), and the second transmission component is a mechanical pump driving gear (6). The mechanical pump driving gear (6) meshes with the mechanical pump driven gear (5). The mechanical pump driving gear (6) is connected to the engine. The engine drives the mechanical pump (4) to move through the mechanical pump driving gear (6) and the mechanical pump driven gear (5).

7. The vehicle transmission device according to claim 1, characterized in that, The electronic pump (16) includes: Electronic pump body (161); Two electronic pump connection parts (162) are provided. The first end of the electronic pump connection part (162) is connected to the electronic pump body (161), and the second end of the electronic pump connection part (162) is connected to the intermediate support structure (3). The second end of one of the electronic pump connection parts (162) forms the oil inlet of the electronic pump (16), and the second end of the other electronic pump connection part (162) forms the oil outlet of the electronic pump (16). At least a portion of the electronic pump body (161) extends through the mounting hole (100) into the drive motor housing (2).

8. The vehicle transmission device according to claim 7, characterized in that, The electronic pump body (161) and the generator housing (1) are clearance-fitted.

9. The vehicle transmission device according to claim 7, characterized in that, The electronic pump (16) also includes: The assembly (163) is disposed on the outer peripheral surface of the electronic pump body (161). An annular sealing groove is provided on the end face of the assembly (163) facing the generator housing (1). A sealing ring (18) is provided in the annular sealing groove. When at least part of the electronic pump body (161) extends through the assembly hole (100) into the drive motor housing (2), the sealing ring (18) abuts against the generator housing (1), and the assembly (163) is connected to the generator housing (1).

10. The vehicle transmission device according to claim 7, characterized in that, A sealing ring (17) is provided on the outer peripheral surface of the electronic pump connection part (162).

11. A vehicle having a vehicle transmission, characterized in that, The vehicle transmission device is the vehicle transmission device according to any one of claims 1-10.

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