Highly integrated shell assembly of high-speed oil-cooled motor

Abstract

The invention discloses a highly-integrated shell assembly of a high-speed oil-cooled motor, and belongs to the technical field of oil-cooled motors. Comprising a rear shell and a middle shell which are integrated together. A rotary transformer is installed on the rear shell, a pressing plate is arranged between the rear shell and the rotary transformer, a stamping key is arranged on the pressing plate and matched with a key groove of the rotary transformer to prevent the rotary transformer from rotating in the radial direction, and an outer edge protrusion is arranged on the pressing plate and matched with a groove of the rear shell. Through highly integrated shell arrangement, the problem of compact spatial arrangement is solved, various parts and connector interfaces are integrated, and functional diversity and effectiveness are guaranteed. Through the structural design of the pressing plate and the cooperation of the pressing plate and the rear shell, axial movement and radial rotation of the resolver are prevented, and mounting mistakes are prevented. Filtering and cooling of oil are achieved through the rear oil suction pipeline and the oil discharge pipeline under the action of the gear pump by means of the oil filter and the oil cooler, the overall arrangement structure is compact, the high-speed oil cooling function is achieved on the premise that more adaptability of the space is met, and the oil cleanliness is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil-cooled motors, and particularly relates to a highly integrated housing assembly for a high-speed oil-cooled motor. Background Art

[0002] High-speed oil-cooled motors are applied in the ubiquitous new energy range extender systems. Traditional range extender systems are often relatively scattered in layout, and the connections between components are complex. They not only occupy a large amount of space but also easily cause efficiency losses and increased failure rates due to mutual interference and friction between components. How to effectively utilize the space in the cabin, reduce unnecessary space waste, and at the same time ensure the coordinated operation of each component is the key to improving the overall system efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a highly integrated housing assembly for a high-speed oil-cooled motor;

[0004] The technical solution adopted by the present invention is as follows:

[0005] A highly integrated housing assembly for a high-speed oil-cooled motor, including an integrated rear housing and a middle housing; a resolver is installed on the rear housing, a pressure plate is arranged between the rear housing and the resolver, a stamping key is arranged on the pressure plate to cooperate with the keyway of the resolver to prevent the resolver from rotating radially, and an outer edge protrusion is arranged on the pressure plate to cooperate with the groove of the rear housing.

[0006] The present invention has the following beneficial effects compared with the prior art:

[0007] 1. Through the layout of the highly integrated housing, the present invention realizes efficient power output and cruising range in a limited space, thereby improving the reliability of the machine, solving the problem of compact space layout, integrating a variety of components and plug-in interfaces, and ensuring the diversity and effectiveness of functions.

[0008] 2. Through the design of the pressure plate structure and cooperation with the rear housing, the present invention realizes preventing the resolver from axially moving, radially rotating, and installation anti-mistake.

[0009] 3. Through the rear oil suction oil circuit and the oil discharge pipeline, under the action of the gear pump, the filtration and cooling of the oil fluid are realized with the help of an oil filter and an oil cooler. The overall layout structure is compact, and the function of high-speed oil cooling is realized on the premise of meeting more adaptability of the space, ensuring the cleanliness of the oil fluid.

[0010] 4. By designing a support bushing, the present invention effectively supports the high-speed motor shaft with a relatively long distance, and stipulates the dimension guarantee method for integrating the bushing on the housing.

[0011] 5. Through the oil pump oil tank and the wall thickness principle of the oil circuit machine housing, the present invention realizes a more compact axial distance.

[0012] 6. The compact and lightweight structure of the present invention is applicable to the power layout and endurance of ground and aerial machinery.

[0013] 7. The present invention meets the principle of cost reduction and efficiency improvement, providing more possibilities for the subsequent range extender market. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an axial sectional view of the housing integrated parts and the plug-in parts structure of the present invention;

[0015] Figure 2 It is an axial sectional structure view of the press plate pressing and the cylinder-piercing wire harness of the present invention;

[0016] Figure 3 It is an axial pressing sectional view of the press plate and the resolver of the present invention;

[0017] Figure 4 It is a side structure view of the oil cooler of the present invention;

[0018] Figure 5 It is a structure view of the water and oil circuit return of the present invention;

[0019] Figure 6 It is a structure view of the integrated oil suction oil circuit in the flange boundary of the present invention;

[0020] Wherein: 1. Rear housing; 3. Resolver; 4. Press plate; 5. Stamping key; 6. Keyway; 7. Outer edge protrusion; 8. Groove; 9. High-voltage connector; 10. Axial rubber ring; 11. Cylinder-piercing connector; 12. O-ring I; 13. Gear pump; 14. Special-shaped rubber ring for gear pump; 15. Oil filter; 16. O-ring II; 17. Oil suction oil circuit; 18. O-ring III; 19. Plug one; 20. Oil discharge oil circuit; 21. O-ring IV; 22. Plug two; 23. Middle housing; 24. O-ring V; 25. Oil cooler; 26. Controller; 27. Dust-proof sealing ring; 28. Controller water circuit interface; 29. Special-shaped rubber ring for controller; 30. High-speed motor shaft; 31. Support bushing; 32. Water circuit; 33. Nozzle; 34. Water circuit hose; 35. Return pipe; 36. Groove; 37. Oil suction pipeline; 38. Flange boundary; 39. Flange boundary; 40. Wall thickness. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to better understand the purpose, structure and function of the present invention, the following further detailed description of the present invention will be made with reference to the accompanying drawings.

[0022] As Figures 1 to 6As shown in the figure, a highly integrated housing assembly for a high-speed oil-cooled motor includes a rear housing 1 and a middle housing 23 integrated together. A resolver 3 is installed on the rear housing 1. The resolver 3 is press-fitted onto the rear housing 1 by a pressing plate 4 with interference to prevent axial movement of the resolver 3.

[0023] As Figure 3 shown, a pressing plate 4 is provided between the rear housing 1 and the resolver 3. A stamping key 5 is provided on the pressing plate 4 to cooperate with the keyway 6 of the resolver 3 to prevent radial rotation of the resolver 3.

[0024] The pressing plate 4 is provided with an outer edge protrusion 7 to cooperate with the groove 8 of the rear housing 1 to ensure the uniqueness of the installation direction and play an anti-misalignment role. As Figure 2 shown, both the outer edge protrusion 7 and the groove 8 are provided in four places.

[0025] As Figures 1 to 3 shown, the high-voltage connector 9, the through-cylinder connector 11, and the gear pump 13 are all installed on the rear housing 1. The high-voltage connector 9 is sealed by an axial rubber ring 10, the through-cylinder connector 11 is sealed by an O-ring 12, and the gear pump 13 is sealed with the rear housing 1 by a special-shaped rubber ring 14 for the gear pump.

[0026] As Figure 1 , Figure 5 shown, the oil filter 15 is installed on the middle housing 23, and the oil filter 15 is sealed by an O-ring 16.

[0027] An oil suction circuit 17 and an oil discharge circuit 20 are provided on the rear housing 1. The end of the oil discharge circuit 20 is connected to the oil suction pipeline 37 of the middle housing 23 and sealed by an O-ring 24. The oil flows back to the oil cooler 25 externally connected to the middle housing 23 through the oil suction pipeline 37 of the middle housing 23.

[0028] The oil suction circuit 17 is sealed by a plug 19 with an O-ring 18.

[0029] The oil discharge circuit 20 is sealed by a plug 22 with an O-ring 21.

[0030] The controller 26 is installed on the rear housing 1 correctly. The controller 26 is sealed by a dust-proof sealing ring 27.

[0031] The controller water circuit interface 28 and the controller 26 are sealed with the rear housing 1 by a special-shaped rubber ring 29 for the controller.

[0032] A support bushing 31 is provided between the high-speed motor shaft 30 and the rear housing 1. The outer diameter of the support bushing 31 is processed after being press-fitted tightly with the rear housing 1, and the inner diameter of the support bushing 31 has a clearance fit with the high-speed motor shaft 30.

[0033] The water circuit 32 of the controller 26 returns to the nozzle 33, and the nozzle 33 is connected to the water hose 34 to transfer the returned water to the return pipe 35 of the oil cooler 25. The groove 36 of the gear pump 13 is axially compactly fitted with the oil suction circuit 17, and the axial distance is minimized without exceeding the flange boundaries 38 and 39 under the principle of satisfying the wall thickness 40 of the rear housing 1, so as to optimize the housing weight in design, as Figure 6 shown.

[0034] It can be understood that the present invention is described by some embodiments. Those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A highly integrated housing assembly for a high-speed oil-cooled motor, characterized in that: The invention comprises a rear housing (1) and a middle housing (23) which are integrated together; a resolver (3) is mounted on the rear housing (1); a pressure plate (4) is arranged between the rear housing (1) and the resolver (3); a stamping key (5) is arranged on the pressure plate (4) and cooperates with a keyway (6) of the resolver (3) to prevent radial rotation of the resolver (3); and an outer edge protrusion (7) is arranged on the pressure plate (4) and cooperates with a groove (8) of the rear housing (1).

2. The highly integrated housing assembly for a high-speed oil-cooled motor according to claim 1 is characterized in that: The rear housing (1) is equipped with a high-pressure connector (9), a cylinder connector (11) and a gear pump (13).

3. The highly integrated housing assembly of a high-speed oil-cooled motor according to claim 2 is characterized in that: An oil filter (15) is installed on the middle housing (23), an oil suction circuit (17) and an oil discharge circuit (20) are arranged on the rear housing (1), the end of the oil discharge circuit (20) is connected to the oil suction pipeline (37) of the middle housing (23), and the oil flows back to the oil cooler (25) connected to the outside of the middle housing (23) through the oil suction pipeline (37) of the middle housing (23). A controller (26) is installed on the rear housing (1), and the water circuit (32) of the controller (26) flows back to the pipe connection nozzle (33), and the pipe connection nozzle (33) is connected to the water circuit hose (34) to transfer the return water to the return pipe (35) of the oil cooler (25), and the groove (36) of the gear pump (13) and the oil suction circuit (17) are axially compactly matched.

4. The highly integrated housing assembly for a high-speed oil-cooled motor according to claim 3 is characterized in that: The oil filter (15) is sealed by O-ring No. 2 (16), the oil suction oil circuit (17) is sealed by screw plug No. 1 (19) with O-ring No. 3 (18), the oil discharge oil circuit (20) is sealed by screw plug No. 2 (22) with O-ring No. 4 (21), the controller (26) is sealed by a dustproof sealing ring (27), and the controller water circuit interface (28) and the controller (26) are sealed by the controller special-shaped rubber ring (29) and the rear housing (1).

5. The highly integrated housing assembly for a high-speed oil-cooled motor according to claim 1 is characterized in that: A supporting bushing (31) is provided between the rear housing (1) and the high-speed motor shaft (30).

6. The highly integrated housing assembly for a high-speed oil-cooled motor according to claim 5 is characterized in that: The outer diameter of the support bushing (31) is processed after interference pressing with the rear housing (1), and the inner diameter of the support bushing (31) is clearance-matched with the high-speed motor shaft (30).

7. The highly integrated housing assembly of a high-speed oil-cooled motor according to claim 2 is characterized in that: The high-pressure connector (9) is sealed by an axial rubber ring (10), the through-cylinder connector (11) is sealed by an O-ring (12), and the gear pump (13) is sealed with the rear housing (1) by a gear pump special-shaped rubber ring (14).

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