Shaft components, drive assemblies, and vehicles

Abstract

A vehicle (200) equipped with a drive assembly (100). The drive assembly (100) comprises a shaft component (300). The shaft component (300) comprises a shaft body (20) and a plug (30), wherein a first oil passage (21) and a plurality of oil outlet holes (60) arranged at intervals in the axial direction of the shaft body (20) are formed within the shaft body (20), all of which communicate with the first oil passage (21), one end of the plug (30) is coordinately connected to the oil inlet end of the first oil passage (21), the plug (30) is provided with an oil inlet hole (31), the oil inlet hole (31) communicates with the first oil passage (21), and the angle between the oil inlet hole (31) and the axis of the shaft body (20) is acute.

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims priority to a Chinese patent application with the application number 202310215508.2 and the title "SHAFT COMPONENT, DRIVE ASSEMBLY AND VEHICLE" filed with the China National Intellectual Property Administration on February 27, 2023, and the entire content of the said application is incorporated herein by reference.

[0002] This application relates to the technical field of drive assemblies, and more particularly, to drive assemblies and vehicles.

Background Art

[0003] Oil - cooled motors are increasingly being used in new - energy vehicle drive assemblies due to their excellent cooling effect. To increase the maximum vehicle speed, the maximum speed of the motor has been increased to exceed 20,000 rpm, and its cooling and lubrication systems are often realized by internal oil passages designed within rotating shafts such as motor shafts and input shafts.

[0004] In related technologies, under high - speed operating conditions, the mechanical pump connected to the wheel end rotates at high speed, the inlet flow rate is large and the pressure is high, and the flying distance of the discharged oil is relatively long. Under the action of centrifugal force, there is a problem that the flow rate distribution is large at the distal end of the oil circuit and small at the proximal end. On the other hand, under low - speed operating conditions, the mechanical pump rotates at low speed, the inlet flow rate is low and the pressure is low, and the flying distance of the discharged oil is relatively short. As a result, the flow rate distribution becomes large at the proximal end of the oil circuit and the oil is insufficient at the distal end. Therefore, this causes the problem that the flow rate distribution at each oil port of the internal oil passage is uneven under both high - speed and low - speed operating conditions.

Summary of the Invention

[0005] This application aims to solve at least one of the technical problems present in the prior art. To this end, this application proposes a shaft component in which the influence of jets on the flow distribution of the drive assembly can be eliminated by arranging an inclined oil inlet hole, and as a result both the proximal and distal ends of the shaft body can meet the requirements at different rotational speeds.

[0006] This application further proposes a drive assembly.

[0007] This application also proposes a vehicle.

[0008] A shaft component according to a first embodiment of the present invention includes a shaft body having a first oil passage disposed within it, a plurality of oil outlet holes disposed on the shaft body, the oil outlet holes being spaced along the axial direction of the shaft body, and all of the plurality of oil outlet holes communicating with the first oil passage, and a plug having an oil inlet hole disposed on the plug, the oil inlet hole communicating with the first oil passage, and the angle between the oil inlet hole and the axis of the shaft body being acute.

[0009] According to the shaft component of the embodiment of this application, by arranging an inclined oil inlet hole, the influence of the jet on the flow rate distribution of the shaft component can be eliminated, and as a result, both the proximal and distal ends of the shaft body can meet the requirements at different rotational speeds.

[0010] According to some embodiments of this application, the angle between the oil inlet hole and the axial direction of the shaft body is α, where α satisfies the relationship 5° ≤ α ≤ 10°.

[0011] According to some embodiments of this application, the plug includes a first compartment and a second compartment, the first and second compartments being connected to each other axially, the diameter of the first compartment being greater than the diameter of the second compartment, and a step being formed between the first and second compartments.

[0012] According to some embodiments of this application, the shaft component further includes a seal, a receiving groove is provided on the plug, and the seal is sandwiched between the plug and the inner wall of the first oil passage and located within the receiving groove.

[0013] According to some embodiments of this application, the shaft component further includes an oil baffle, which is cooperatively connected to the end of a first oil passage away from the plug.

[0014] According to some embodiments of this application, in the axial direction of the shaft body, the shaft body has a plurality of oil outlet hole groups, the oil outlet hole groups include a first motor oil outlet hole group, wherein the oil outlet holes of the first motor oil outlet hole group are first oil outlet holes, and the first oil outlet holes are located near the oil inlet end of a first oil passage; and a second motor oil outlet hole group, wherein the oil outlet holes of the second motor oil outlet hole group are second oil outlet holes, and the second oil outlet holes are located away from the oil inlet end of the first oil passage, the portion of the shaft body located between the first oil outlet holes and the second oil outlet holes is configured to accommodate the rotor of a motor, both the first oil outlet holes and the second oil outlet holes are configured to be located opposite the stator of a motor, and the total area of ​​the first oil outlet holes is smaller than the total area of ​​the second oil outlet holes.

[0015] According to some embodiments of this application, a plurality of oil outlet hole groups are arranged on the shaft body in the axial direction of the shaft body, the plurality of oil outlet hole groups are spaced apart along the axial direction of the shaft body, each oil outlet hole group includes at least one oil outlet hole, and the oil outlet hole group includes at least one bearing oil outlet hole group and at least one motor oil outlet hole group. The oil outlet holes of the bearing oil outlet hole group are configured to be positioned opposite to the bearing, and the oil outlet holes of the motor oil outlet hole group are configured to be positioned opposite to the motor, and furthermore, the sum of the areas of the oil outlet holes of each motor oil outlet hole group is greater than the sum of the areas of the oil outlet holes of each bearing oil outlet hole group.

[0016] According to some embodiments of this application, the shaft body includes an input shaft having an oil inlet end of a first oil passage formed at one end of the input shaft, and a motor shaft having one end of the motor shaft sleeved to the other end of the input shaft, configured such that the motor shaft is sleeved to the rotor of the motor, and all of the oil outlet holes of the motor oil outlet hole group are located on the motor shaft and are located opposite the stator of the motor.

[0017] According to some embodiments of this application, the bearing oil outlet hole group includes a first bearing oil outlet hole group, the oil outlet holes of the first bearing oil outlet hole group are third oil outlet holes, the third oil outlet holes are located on an input shaft, the closed end of the input shaft is configured to accommodate the first bearing, and the third oil outlet holes are configured to be located opposite the first bearing.

[0018] According to some embodiments of this application, the bearing oil outlet hole group includes a second bearing oil outlet hole group, the oil outlet holes of the second bearing oil outlet hole group are fourth oil outlet holes, the fourth oil outlet holes are located on the input shaft, the end of the motor shaft closing the input shaft is configured to accommodate the second bearing, and the fourth oil outlet holes are configured to be located opposite the second bearing.

[0019] According to some embodiments of this application, the bearing oil outlet hole group includes a third bearing oil outlet hole group, the oil outlet holes of the third bearing oil outlet hole group are fifth oil outlet holes, the fifth oil outlet holes are located on a motor shaft, the end of the motor shaft furthest from the input shaft is configured to accommodate a fourth bearing, and the fifth oil outlet holes are configured to be located opposite the fourth bearing.

[0020] According to some embodiments of this application, a third bearing is sandwiched between a housing and an input shaft. A second oil passage is located within the housing. The second oil passage communicates with an oil inlet hole, and a sixth oil outlet hole is located above the second oil passage. The sixth oil outlet hole is located opposite the third bearing.

[0021] A drive assembly according to an embodiment of a second aspect of this application includes a shaft component, a bearing, and a motor. The motor includes a stator and a rotor. The shaft body of the shaft component is coordinately connected to the rotor and bearing of the motor, respectively, and at least one oil outlet hole is located opposite the stator of the motor, and at least one oil outlet hole is located opposite the bearing.

[0022] A vehicle according to a third embodiment of this application includes a drive assembly.

[0023] Further aspects and advantages of this application are partially presented in the following description, partially revealed therein, or learned through practice of this application.

[0024] The foregoing and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments taken in conjunction with the following drawings.

Brief Description of the Drawings

[0025] [Figure 1] It is a cross-sectional view of a drive assembly according to an embodiment of the present application. [Figure 2] It is partial schematic view A of FIG. 1. [Figure 3] It is partial schematic view B of FIG. 1. [Figure 4] It is a cross-sectional view of a plug and a sealant according to an embodiment of the present application. [Figure 5] It is a schematic block diagram of a vehicle according to an embodiment of the present application.

Modes for Carrying Out the Invention

[0026] Embodiments of the present application will be described in detail below, but the embodiments described with reference to the accompanying drawings are examples.

[0027] The shaft component 300 according to an embodiment of the present application will be described below with reference to FIGS. 1 to 4. The present application also proposes a drive assembly 100 having the shaft component 300 described above. The present application further proposes a vehicle 200 having the drive assembly 100 described above, as shown in FIG. 5.

[0028] As shown in combination with Figures 1 to 4, the shaft component 300 of the embodiment of this application includes a shaft body 20 and a plug 30. The shaft body 20 is located within the housing 10. A first oil passage 21 is located within the shaft body 20, and a plurality of oil outlet holes 60 are located on the shaft body 20, spaced apart along the axial direction of the shaft body 20. All of the oil outlet holes 60 communicate with the first oil passage 21. A motor 40 and a plurality of bearings 50 are sleeved onto the shaft component 300. When the motor 40 is energized, the rotor 42 rotates relative to the stator 41 under the action of an electromagnetic force. Also, since the rotor 42 and the shaft body 20 rotate coaxially, the motor 40 will output power. When the motor 40 is energized, the coils of the motor 40 generate heat, so the coils need to be cooled. By arranging multiple oil outlet holes 60 on the shaft component 300, oil can be discharged from the oil outlet holes 60 to cool and lubricate the motor 40 and bearing 50.

[0029] One end of the plug 30 communicates with the oil inlet end of the first oil passage 21, and the other end of the plug 30 is connected to the housing 10. An oil inlet hole 31 is located on the plug 30. That is, the plug 30 connects the housing 10 and the shaft body 20, one end of the oil inlet hole 31 on the plug 30 communicates with the first oil passage 21, and the other end of the oil inlet hole 31 can communicate with the input oil passage, meaning that oil can enter the drive assembly 100 through the plug 30.

[0030] As shown in combination with Figures 2 and 4, the angle between the oil inlet hole 31 and the axial direction of the shaft body 20 is also acute. Because the mechanical pump has a high rotational speed, high inlet flow rate and pressure, and a long ejection distance for the discharged oil, centrifugal force causes a greater flow rate distribution at the distal end of the first oil passage 21 and a smaller flow rate distribution at the proximal end. By arranging the inclined oil inlet hole 31, the oil adheres closely to the inner wall of the first oil passage 21 after entering it, thereby eliminating the effect of the jet on the oil, and thus the oil can be properly distributed.

[0031] Therefore, by arranging the inclined oil inlet hole 31, the effect of the jet on the flow rate distribution of the shaft component 300 can be eliminated, and as a result, both the proximal and distal ends of the shaft body 20 can meet the requirements at different rotational speeds.

[0032] As shown in Figure 4, the angle between the oil inlet hole 31 and the axial direction of the shaft body 20 is α, where α satisfies the relationship 5° ≤ α ≤ 10°. By setting the angle between the oil inlet hole 31 and the axial direction between 5° and 10°, the influence of the jet on the oil can be eliminated on the one hand, and the impact of the oil on the oil passage can be avoided on the other hand. For example, if the angle between the oil inlet hole 31 and the axial direction is less than 5°, the inclination angle of the oil inlet hole 31 is small, so the oil cannot completely eliminate the influence of the jet. In another example, if the angle between the oil inlet hole 31 and the axial direction is greater than 10°, the inclination angle of the oil inlet hole 31 is relatively large, that is, the angle between the oil inlet hole 31 and the inner wall of the oil passage is relatively large, and as a result the oil is more likely to impact the oil passage. In addition, if the angle between the oil inlet hole 31 and the axial direction is greater than 10°, the axial size of the plug 30 becomes relatively small, and as a result the contact area between the plug 30 and the shaft body 20 becomes small, which affects the sealing performance between the plug 30 and the shaft body 20.

[0033] As shown in Figure 4, a receiving groove 32 is provided on the plug 30, and the drive assembly 100 further includes a sealant 51, which is sandwiched between the plug 30 and the inner wall of the first oil passage 21 and located within the receiving groove 32. With such a configuration, the sealant 51 can be used to improve the sealing performance between the plug 30 and the shaft body 20 by being sandwiched between the plug 30 and the first oil passage 21, thereby preventing leakage of the drive assembly 100. In addition, the provision of a receiving groove 32 on the plug 30 and the placement of the sealant 51 within the receiving groove 32 further enhances the sealing performance between the plug 30 and the shaft body 20, and prevents axial displacement of the sealant 51.

[0034] As shown in Figure 4, the plug 30 includes a first section 33 and a second section 34, which are connected to each other axially. The diameter of the first section 33 is larger than the diameter of the second section 34, resulting in a step 35 being formed between the first section 33 and the second section 34. A receiving groove 32 is located on the first section 33, and the second section 34 has an interference fit with the housing 10. The plug 30 is configured as a first section 33 and a second section 34 connected to each other axially, with a step 35 located between the first section 33 and the second section 34. In this way, the second section 34 can be conveniently fitted with the housing 10. In addition, the second section 34 has an interference fit with the housing 10. The interference fit allows for a connection between the second compartment 34 and the housing 10, and also allows for sealing between the second compartment 34 and the housing 10.

[0035] The shaft component 300 further includes an oil baffle 29, which is coordinately connected to one end of a first oil passage 21 away from the plug 30. In this way, the oil baffle 29 can seal one end of the first oil passage 21 away from the plug 30, and as a result, oil will not leak from any other location except out of the multiple oil outlet holes 60.

[0036] According to one embodiment of the present application, the shaft body 20 has a plurality of oil outlet hole groups in the axial direction of the shaft body 20. The oil outlet hole groups include a first motor oil outlet hole group 701 and a second motor oil outlet hole group 702. The oil outlet hole 60 of the first motor oil outlet hole group 701 is the first oil outlet hole 24, and the oil outlet hole 60 of the second motor oil outlet hole group 702 is the second oil outlet hole 25. Of these, the first oil outlet hole 24 is located near the oil inlet end of the first oil passage 21, and the second oil outlet hole 25 is located away from the oil inlet end of the first oil passage 21. The portion of the shaft body 20 between the first oil outlet hole 24 and the second oil outlet hole 25 is configured to accommodate the rotor 42 of the motor 40. Both the first oil outlet hole 24 and the second oil outlet hole 25 are configured to be positioned opposite the stator 41 of the motor 40, and the total area of ​​the first oil outlet hole 24 is smaller than the total area of ​​the second oil outlet hole 25. As the oil flow rate decreases when it passes through the second oil outlet hole 25 after being divided by the first oil outlet hole 24, the total area of ​​the second oil outlet hole 25 can be set to be larger than the total area of ​​the first oil outlet hole 24, and as a result the cooling flow on both sides of the motor 40 can be distributed evenly, and thus even heat dissipation of the motor 40 can be achieved.

[0037] According to another embodiment of the present application, a plurality of oil outlet hole groups are arranged on the shaft body 20 in the axial direction of the shaft body 20, and the plurality of oil outlet hole groups are spaced apart along the axial direction of the shaft body 20. Each oil outlet hole group includes at least one oil outlet hole 60, and the oil outlet hole group includes at least one bearing oil outlet hole group 703 and at least one motor oil outlet hole group 70. Of these, the oil outlet holes 60 of the bearing oil outlet hole group 703 are configured to be positioned opposite the bearing 50, and the oil outlet holes 60 of the motor oil outlet hole group 70 are configured to be positioned opposite the motor 40, and the sum of the areas of the oil outlet holes in each motor oil outlet hole group 70 is greater than the sum of the areas of the oil outlet holes 60 in each bearing oil outlet hole group 703. Since the amount of cooling oil required by the motor 40 is greater than the amount of lubricating oil required by the bearing 50, the sum of the areas of the oil outlet holes 60 in each motor oil outlet hole group 70 is set to be greater than the sum of the areas of the oil outlet holes 60 in each bearing oil outlet hole group 703, thereby ensuring that the motor 40 is properly cooled.

[0038] As shown in Figure 1, the shaft body 20 includes a motor shaft 23 and an input shaft 22. An oil inlet end of a first oil passage 21 is formed at one end of the input shaft 22, one end of the motor shaft 23 is sleeved to the other end of the input shaft 22, the motor shaft 23 is configured such that the rotor 42 of the motor 40 is sleeved to the motor shaft 23, and all of the oil outlet holes of the motor oil outlet hole group 70 are located on the motor shaft 23 and are configured to be located opposite the stator 41 of the motor 40. In other words, the shaft body 20 consists of the motor shaft 23 and the input shaft 22. Both the first oil outlet hole 24 and the second oil outlet hole 25 are located on the motor shaft 23, and the first oil outlet hole 24 and the second oil outlet hole 25 are located on both sides of the rotor 42 in the axial direction. As a result, the first oil outlet hole 24 and the second oil outlet hole 25 can cool and lubricate both sides of the rotor 42 and the stator 41, respectively, thereby effectively lowering the temperatures of the rotor 42 and the stator 41.

[0039] As shown in Figure 3, the bearing oil outlet hole group 703 includes a first bearing oil outlet hole group. The oil outlet holes of the first bearing oil outlet hole group are the third oil outlet holes 26. The third oil outlet holes 26 are located on the input shaft 22. The end of the input shaft 22 that closes the motor shaft 23 is configured to accommodate the first bearing 52, and the third oil outlet holes 26 are configured to be located opposite the first bearing 52. The third oil outlet holes 26, which communicate with the first oil passage 21, are located on the input shaft 22 and opposite the first bearing 52. For example, the end of the third oil outlet holes 26 away from the first oil passage 21 is located to the left or right of the first bearing 52, so that oil can be discharged into the first bearing 52 through the third oil outlet holes 26, and the first bearing 52 can be lubricated and cooled by the oil.

[0040] As shown in Figure 3, the bearing oil outlet hole group 703 includes a second bearing oil outlet hole group. The oil outlet holes of the second bearing oil outlet hole group are the fourth oil outlet holes 27. The fourth oil outlet holes 27 are located on the input shaft 22. The end of the motor shaft 23 that closes the input shaft 22 is configured to accommodate the second bearing 53, and the fourth oil outlet holes 27 are configured to be located opposite the second bearing 53. The fourth oil outlet holes 27, which communicate with the first oil passage 21, are located on the input shaft 22 and opposite the second bearing 53, so that oil can be discharged to the second bearing 53 through the fourth oil outlet holes 27, and the second bearing 53 can be lubricated and cooled by the oil.

[0041] The second bearing 53 is positioned on the motor shaft 23. In order to avoid the first oil outlet hole 24 and the second oil outlet hole 25 being affected by the fact that the fourth oil outlet hole 27 opens on the motor shaft 23, the fourth oil outlet hole 27 is positioned on the input shaft 22 and is positioned at an angle. As a result, the fourth oil outlet hole 27 can be positioned opposite the second bearing 53, and the second bearing 53 can be lubricated and cooled by the oil.

[0042] As shown in Figure 2, a third bearing 54 is positioned at the end of the input shaft 22, away from the motor shaft 23. The third bearing 54 is sandwiched between the housing 10 and the input shaft 22. A second oil passage 11 is located within the housing 10. The second oil passage 11 communicates with an oil inlet hole 31, and a sixth oil outlet hole 12 is located above the second oil passage 11. The sixth oil outlet hole 12 is positioned opposite the third bearing 54. With such an arrangement, the sixth oil outlet hole 12, which communicates with the second oil passage 11, is located on the housing 10 and opposite the third bearing 54, and oil can be discharged to the third bearing 54 through the sixth oil outlet hole 12, so that the third bearing 54 can be lubricated and cooled by the oil.

[0043] The second oil passage 11 is located on the housing 10, and the oil inlet hole 31 of the plug 30 communicates with the first oil passage 21 and the second oil passage 11. As a result, oil enters the drive assembly 100 from the second oil passage 11 on the housing 10 and enters the first oil passage 21 through the oil inlet hole 31, thus enabling oil lubrication and heat dissipation of the drive assembly 100.

[0044] Furthermore, the sixth oil outlet hole 12 is located on the housing 10, which facilitates the placement of the sixth oil outlet hole 12.

[0045] In addition, a first bearing 52 and a third bearing 54 are positioned at both ends of the input shaft 22. The arrangement of the first bearing 52 and the third bearing 54 allows the input shaft 22 to be supported on the one hand, and allows the rotation of the input shaft 22 to be facilitated on the other hand.

[0046] In addition, as shown in combination with Figure 1, the bearing oil outlet hole group 703 includes a third bearing oil outlet hole group. The oil outlet holes of the third bearing oil outlet hole group are the fifth oil outlet holes 28. The fifth oil outlet holes 28 are located on the motor shaft 23. The end of the motor shaft 23 away from the input shaft 22 is configured to accommodate the fourth bearing 55, and the fifth oil outlet holes 28 are configured to be located opposite the fourth bearing 55. With such arrangement, the fifth oil outlet holes 28, which communicate with the first oil passage 21, are located on the motor shaft 23 and opposite the fourth bearing 55, and oil can be discharged to the fourth bearing 55 through the fifth oil outlet holes 28, so that the fourth bearing 55 can be lubricated and cooled by the oil.

[0047] In addition, a second bearing 53 and a fourth bearing 55 are positioned at both ends of the motor shaft 23. The arrangement of the second bearing 53 and the fourth bearing 55 allows the motor shaft 23 to be supported on the one hand, and allows the rotation of the motor shaft 23 to be facilitated on the other hand.

[0048] A drive assembly 100 according to an embodiment of a second aspect of this application includes a shaft component 300, a motor 40, and a bearing 50. The shaft body 20 of the shaft component 300 is coordinately connected to the rotor 42 of the motor 40 and the bearing 50, respectively. At least one oil outlet hole 60 is located opposite the stator 41 of the motor 40, and at least one oil outlet hole 60 is located opposite the bearing 50. Specifically, the motor 40 includes a stator 41 and a rotor 42. The stator 41 is fixed to the housing 10, and the rotor 42 is fixed to the shaft body 20. The stator 41 and rotor 42 are located opposite each other, and the rotor 42 is sandwiched between a first oil outlet hole 24 and a second oil outlet hole 25.

[0049] A vehicle 200 according to an embodiment of the third aspect of this application includes a drive assembly 100 according to an embodiment of the second aspect of this application, as shown in Figure 5.

[0050] In the description of this application, orientations or positional relationships indicated by terms such as “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “up,” “down,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” “outside,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” are based on the orientations or positional relationships shown in the accompanying drawings and are for the convenience of the description and simplification of the description of this application and should be understood not to suggest or imply that the devices or elements referred to must have a particular orientation, or must be constructed and operated in a particular orientation. Therefore, these should not be construed as limiting this application.

[0051] In this specification, any description of terms such as “one embodiment,” “several embodiments,” “a schematic embodiment,” “an example,” “a specific example,” or “several examples” means that a particular feature, structure, material, or property described in relation to an embodiment or example is included in at least one embodiment or example described herein. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0052] While embodiments of this application have been shown and described, those skilled in the art will understand that various modifications, alterations, substitutions, and variations can be made to these embodiments without departing from the principles and objectives of this application. The scope of this application is defined by the claims and their equivalents. [Explanation of Symbols]

[0053] 200 vehicles 100 Drive Assembly 10 Housing 11. Second oil passage 12. Sixth oil outlet hole 300 Shaft Components 20 Shaft body 21 First oil passage 22 Input Shafts 23 Motor Shaft 24 First oil outlet hole 25 Second oil outlet hole 26 Third oil outlet hole 27 Fourth oil outlet hole 28 Fifth oil outlet hole 29 Oil baffle 70 Motor oil outlet hole group 701 First group of motor oil outlet holes 702 Second group of motor oil outlet holes 703 Bearing oil outlet hole group 60 Oil outlet holes 30 plugs 31 Oil inlet hole 32 Receptor groove 33. Section 1 34 Second section 35 steps 40 motors 41 Stator 42 rotors 51 Sealing material 50 bearings 52 First bearing 53 Second bearing 54 Third bearing 55 The fourth bearing

Claims

1. A shaft body (20) having a first oil passage (21) disposed within the shaft body (20), a plurality of oil outlet holes (60) disposed on the shaft body (20), the oil outlet holes being spaced apart along the axial direction of the shaft body (20), and all of the plurality of oil outlet holes (60) communicating with the first oil passage (21), A plug (30) wherein one end of the plug (30) is coordinately connected to the oil inlet end of the first oil passage (21), an oil inlet hole (31) is positioned on the plug (30), the oil inlet hole (31) communicates with the first oil passage (21), and the angle between the oil inlet hole (31) and the axis of the shaft body (20) is acute. A shaft component (300) comprising the above.

2. The shaft component (300) according to claim 1, wherein the angle between the oil inlet hole (31) and the axial direction of the shaft body (20) is α, and α satisfies the relationship 5° ≤ α ≤ 10°.

3. The plug (30) The first section (33) and In the axial direction of the plug (30), the second section (34) is connected to the first section (33) and The shaft component (300) according to claim 1 or 2, comprising, wherein the diameter of the first section (33) is greater than the diameter of the second section (34), and a step (35) is formed between the two sections.

4. The shaft component (300) according to any one of claims 1 to 3, wherein the shaft component further comprises a sealing material (51), a receiving groove (32) is disposed on the plug (30), and the sealing material (51) is sandwiched between the plug (30) and the inner wall of the first oil passage (21) and located within the receiving groove (32).

5. The shaft component (300) according to any one of claims 1 to 4, wherein the shaft component further comprises an oil baffle (29), the oil baffle (29) being coordinately connected to the end of the first oil passage (21) away from the plug (30).

6. In the axial direction of the shaft body (20), the shaft body (20) has a plurality of oil outlet hole groups, and the oil outlet hole groups are A first motor oil outlet hole group (701), wherein the oil outlet hole (60) of the first motor oil outlet hole group (701) is the first oil outlet hole (24), and the first oil outlet hole (24) is located near the oil inlet end of the first oil passage (21), A second group of motor oil outlet holes (702), wherein the oil outlet hole (60) of the second group of motor oil outlet holes (702) is the second oil outlet hole (25), and the second oil outlet hole (25) is located away from the oil inlet end of the first oil passage (21). The shaft body (20) is configured such that the portion between the first oil outlet hole (24) and the second oil outlet hole (25) is configured to accommodate the rotor (42) of the motor (40), and both the first oil outlet hole (24) and the second oil outlet hole (25) are configured to face the stator (41) of the motor (40). The shaft component (300) according to any one of claims 1 to 5, wherein the total area of ​​the first oil outlet holes (24) is smaller than the total area of ​​the second oil outlet holes (25).

7. In the axial direction of the shaft body (20), a plurality of oil outlet hole groups are arranged on the shaft body (20), the plurality of oil outlet hole groups are spaced apart along the axial direction of the shaft body (20), each oil outlet hole group comprises at least one oil outlet hole (60), the oil outlet hole group comprises at least one bearing oil outlet hole group (703) and at least one motor oil outlet hole group (70), the oil outlet hole (60) of the bearing oil outlet hole group (703) is configured to be positioned opposite the bearing (50), and the oil outlet hole (60) of the motor oil outlet hole group (70) is configured to be positioned opposite the motor (40). The shaft component (300) according to any one of claims 1 to 5, wherein the sum of the areas of the oil outlet holes (60) in each motor oil outlet hole group (70) is greater than the sum of the areas of the oil outlet holes (60) in each bearing oil outlet hole group (703).

8. The shaft body (20) is An input shaft (22), wherein the oil inlet end of the first oil passage (21) is formed at one end of the input shaft (22), A motor shaft (23) is configured such that one end of the motor shaft (23) is sleeved to the other end of the input shaft (22), the rotor (42) of the motor (40) is sleeved to the motor shaft (23), and all of the oil outlet holes (60) of the motor oil outlet hole group (70) are located on the motor shaft (23) and are located opposite the stator (41) of the motor (40). The shaft component (300) according to claim 7, comprising the above.

9. The shaft component (300) according to claim 8, wherein the bearing oil outlet hole group (703) comprises a first bearing oil outlet hole group, the oil outlet hole (60) of the first bearing oil outlet hole group is a third oil outlet hole (26), the third oil outlet hole (26) is located on the input shaft (22), the end of the input shaft (22) that closes the motor shaft (23) is configured to accommodate a first bearing (52), and the third oil outlet hole (26) is configured to be located opposite the first bearing (52).

10. The shaft component (300) according to claim 8 or 9, wherein the bearing oil outlet hole group (703) comprises a second bearing oil outlet hole group, the oil outlet hole (60) of the second bearing oil outlet hole group is a fourth oil outlet hole (27), the fourth oil outlet hole (27) is located on the input shaft (22), the end of the motor shaft (23) that closes the input shaft (22) is configured to accommodate a second bearing (53), and the fourth oil outlet hole (27) is configured to be located opposite the second bearing (53).

11. The shaft component (300) according to any one of claims 8 to 10, wherein the bearing oil outlet hole group (703) comprises a third bearing oil outlet hole group, the oil outlet hole (60) of the third bearing oil outlet hole group is a fifth oil outlet hole (28), the fifth oil outlet hole (28) is located on the motor shaft (23), the end of the motor shaft (23) furthest from the input shaft (22) is configured to accommodate a fourth bearing (55), and the fifth oil outlet hole (28) is configured to be located opposite the fourth bearing (55).

12. The shaft component (300) according to any one of claims 8 to 11, wherein the third bearing (54) is sandwiched between the housing (10) and the input shaft (22), a second oil passage (11) is disposed within the housing (10), the second oil passage (11) communicates with the oil inlet hole (31), a sixth oil outlet hole (12) is disposed on the second oil passage (11), and the sixth oil outlet hole (12) is disposed opposite the third bearing (54).

13. A shaft component (300) according to any one of claims 1 to 12, Bearing (50) and Motor (40) and A drive assembly (100) comprising the motor (40) comprising a stator (41) and a rotor (42), the shaft body (20) of the shaft component (300) being coordinately connected to the rotor (42) and the bearing (50), respectively, with at least one oil outlet hole (60) positioned opposite the stator (41) and at least one oil outlet hole (60) positioned opposite the bearing (50).

14. A vehicle (200) comprising the drive assembly (100) according to claim 13.

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