Hybrid power transmission case shell structure

Abstract

The utility model discloses a hybrid power transmission case shell structure, and belongs to the technical field of hybrid power automobile speed reducers. Comprising a torque converter shell, a speed reducer shell and a rear shell which are integrated in a three-section mode. A front lifting lug is arranged on the torque converter shell, a rear lifting lug is arranged on the rear shell, a transmission gantry and three suspension points are arranged on the torque converter shell, a plurality of oil ways are arranged on the torque converter shell, and oil outlets of the oil ways are arranged at the lowest point of the torque converter shell. The power adapter is adaptive to a hybrid power transmission and meets the requirement of an engine gantry interface, one adapter shell can be reduced, the cost is saved, the power adapter is adaptive to the carrying space of a whole vehicle, an external oil cooler is carried on the shell, the standard of high integration is met, and the reserved motor controller space also meets the requirements of the whole vehicle; the axial driving motor and the motor can also effectively work under the standard power, and an oil way arranged in the speed reducer shell also meets the requirements of transmission lubrication and motor cooling.

Description

Technical Field

[0001] This utility model belongs to the field of hybrid vehicle reducer technology, specifically relating to a hybrid vehicle transmission housing structure. Background Technology

[0002] Traditional transmission housings typically consist of separate, sealed housings for the motor and transmission, without interconnection. Each housing is equipped with oil pipes and circuits for lubrication, and mechanical or gear pumps for cooling and lubrication. This structure is redundant and complex, requiring significant material for enclosure and bolts to connect the motor and transmission housings. With the development and design optimization of hybrid transmissions, most DHT (Distributed Hypertransmission) reducers on the market now employ a highly integrated design. This offers advantages such as a more compact structure and improved transmission lubrication efficiency. DHT transmissions also reduce the number of transmission components, thus reducing the size of the housing and saving on raw material costs. The application of this type of DHT housing is becoming increasingly widespread.

[0003] Currently, there is a new type of transmission that is an integrated development of a front-wheel drive hybrid powertrain. However, the current housing is not compatible with it. Therefore, providing a new hybrid power transmission housing structure is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a hybrid power transmission housing structure that can ensure that the motor lubrication and vehicle compatibility requirements are met under the input transmission ratio, avoid over-design and unnecessary feature addition, reduce costs, and meet space requirements.

[0005] The technical solution adopted by this utility model is:

[0006] A hybrid power transmission housing structure includes a torque converter housing, a reducer housing, and a rear housing, which are integrated into three sections. The torque converter housing is provided with a front hanger, the rear housing is provided with a rear hanger, the torque converter housing is provided with a transmission gantry and three suspension points, and the torque converter housing is provided with multiple oil passages. The drain port of the oil passages is located at the lowest point of the torque converter housing.

[0007] Compared with the prior art, the present invention has the following advantages:

[0008] This utility model is adapted to the transmission of hybrid powertrain and meets the requirements of engine gantry interface. It can reduce the use of one adapter housing, saving costs. It is compatible with the installation space of the whole vehicle. The external oil cooler is mounted on the housing, which meets the high integration standard. The reserved space for motor controller also meets the needs of the whole vehicle. The axial drive motor and motor can also work effectively at standard power. The oil circuit arranged in the reducer housing also meets the transmission lubrication and motor cooling requirements.

[0009] This utility model satisfies the highly integrated hybrid transmission housing of the whole vehicle's transmission lubrication system, transmission system, spatial arrangement, motor cooling system, and electronic control system. This design not only meets the traditional transmission's speed reduction and torque increase requirements, but also meets the requirements of new multi-functional hybrid structures, providing more reference value for the design of subsequent hybrid transmission housings. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is the front view of this utility model;

[0012] Figure 3 This is a side view of the present invention;

[0013] Figure 4 This is a rear view of the present invention;

[0014] The components are: 1. Torque converter housing; 2. Reducer housing; 3. Rear housing; 4. Lifting lug; 5. Transmission gantry; 6. Suspension point; 7. Oil passage; 8. Through-cylinder wiring harness mounting point; 9. Oil cooler mounting hole; 10. Mechanical pump mounting point; 11. Resolver wiring harness mounting point; 12. Motor control mounting point; 13. Lifting lug; 14. Oil filler plug; 15. Rear housing mounting point. Detailed Implementation

[0015] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.

[0016] The overall volume of the housing is relatively large, containing the transmission system, motor system and lubrication system. In order to ensure the smooth operation of each system mechanism and to achieve a high degree of integration, while meeting the strength requirements, this three-section hybrid transmission housing was designed.

[0017] like Figure 1 As shown, this utility model provides a transmission housing structure for a hybrid power system, characterized in that it includes a torque converter housing 1, a reducer housing 2, and a rear housing 3, which are integrated into three sections.

[0018] like Figure 2As shown, due to the large overall volume and heavy weight, the main stress points of the shell were determined through strength calculations, and the positions of the front hanger 4 and the rear hanger 13 were designed. That is, the front hanger 4 is set on the torque converter shell 1, and the rear hanger 13 is set on the rear shell 3.

[0019] The front torque converter housing 1 is designed to match a dedicated engine. To ensure the bolt span requirements are met, a transmission gantry 5 is installed. Due to the limited axial space of the front housing, the wrench space requirement is tight, and interference with the internal transmission and lubrication systems must be avoided. Therefore, the transmission gantry 5 is designed with a partial spatial offset while still meeting the space requirements for process installation fixtures. The torque converter housing 1 also has three suspension points 6 to ensure the overall vehicle connection stability. Reinforcing ribs are installed at the connection between the transmission gantry 5's interface flange and the transmission system envelope housing to ensure strength. An oil seal needs to be installed at the drive shaft connection of the transmission gantry 5 to ensure internal sealing. According to requirements, multiple oil passages 7 are installed on the torque converter housing 1. Installing external pipes would be costly and space-constrained; therefore, a borehole design for the oil passages is used. The drain port of the oil passage 7 is located at the lowest point of the torque converter housing 1.

[0020] The reducer housing 2, as the main part of the hybrid transmission box, plays an important connecting and supporting role in the overall structure. For example... Figure 3 As shown, the reducer housing 2 has bearing mounting holes and oil passage mounting holes on the connection side with the torque converter housing 1, and reserves space for gear pump installation. On the side of the reducer housing 2, there is a through-cylinder wiring harness mounting point 8 for connecting the motor controller and the gear pump assembly. There is an oil cooler mounting hole 9 for cooling the lubricating oil inside the housing. Since the motor cooling spray requires low-temperature oil, an oil cooler is provided on the motor side. There is a mechanical pump mounting point 10 for installing the mechanical pump. On the top of the reducer housing 2, there is a motor control mounting point 12 for connecting the motor controller. The advantage of this arrangement is that it can reduce the axial length of the reducer assembly and maximize the satisfaction of the motor controller design concept.

[0021] The reducer housing 2 is designed with the installation diameter based on the size of the motor and drive motor, and the oil passage cross-sectional area is designed based on the working efficiency of the gear pump to enclose the transmission system.

[0022] The rear housing 3 is designed and arranged on one side of the motor rear cover, which can effectively solve the assembly and maintainability issues of the reducer assembly. The rear housing 3 also follows the design of the torque converter housing 1, with some oil pipe channels. After being cooled by the oil cooler, the oil is sprayed onto the motor through these pipes to cool it, playing an essential role in overall lubrication and cooling. Reinforcing ribs are placed at the junction of the oil pipes and the rear housing 3 to ensure the strength of the rear housing 3. Since the powertrain is positioned in a supine position on the vehicle, an oil filler plug mounting point 14 is provided on the rear housing 3 for vehicle connection. As the rear end of the powertrain, the rear housing 3 requires a vehicle mounting point 15 to ensure proper vehicle installation. The rear housing 3 has multiple surrounding reinforcing ribs to meet the housing strength requirements.

[0023] The rear housing 3 is adaptively enveloped according to the axial length of the motor, oil pipes, etc.

[0024] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A hybrid power transmission housing structure, characterized in that: It includes a torque converter housing (1), a reducer housing (2) and a rear housing (3) that are integrated into three sections; the torque converter housing (1) is provided with a front hanger (4), the rear housing (3) is provided with a rear hanger (13), the torque converter housing (1) is provided with a transmission gantry (5) and three suspension points (6), and multiple oil passages (7) are provided on the torque converter housing (1), with the oil drain port of the oil passage (7) located at the lowest point of the torque converter housing (1).

2. The hybrid transmission housing structure according to claim 1, characterized in that: The interface flange of the transmission gantry (5) is reinforced at the connection between the interface flange and the transmission system envelope housing to ensure strength.

3. The hybrid transmission housing structure according to claim 2, characterized in that: The transmission gantry (5) has an oil seal installed at the drive shaft connection to ensure internal sealing.

4. The hybrid transmission housing structure according to claim 1, characterized in that: The reducer housing (2) has bearing mounting holes and oil passage mounting holes on the connection side with the torque converter housing (1), and retains space for gear pump installation. A cylinder wiring harness mounting point (8) is provided on the side of the reducer housing (2) for connecting the motor controller and the gear pump assembly. An oil cooler mounting hole (9) is provided for cooling the lubricating oil inside the housing. A mechanical pump mounting point (10) is provided for installing the mechanical pump. A motor control mounting point (12) is provided above the reducer housing (2) for connecting the motor controller.

5. The hybrid transmission housing structure according to claim 1, characterized in that: Oil pipe channels are arranged on the rear housing (3). Reinforcing ribs are arranged at the junction of the oil pipe and the rear housing (3) to ensure the strength of the rear housing (3). Oil filling plug installation point (14) and vehicle mounting point (15) are set on the rear housing (3). The rear housing (3) is provided with multiple circling reinforcing ribs.

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