Electric drive assembly and vehicle

Abstract

The invention discloses an electric drive assembly and a vehicle, and the electric drive assembly comprises a motor shell, a motor, a motor driving assembly and a driving assembly, wherein the motor shell is internally provided with a mounting space and an oil inlet channel; the motor shaft is arranged in the mounting space; the switching half shaft comprises an end part and a penetrating part, the penetrating part is arranged in the motor shaft in a penetrating mode in the axial direction of the motor shaft, a cooling channel is formed between the outer circumferential wall of the penetrating part and the inner circumferential wall of the motor shaft, the end part is arranged at one end of the penetrating part in the axial direction, and the end part and the motor shaft are spaced in the axial direction of the motor shaft; the diameter of the end part is greater than that of the penetrating part; and the oil baffle ring is arranged between the end part and the motor shaft, a communication channel for oil liquid to flow is arranged in the oil baffle ring, and the oil liquid in the oil inlet channel can flow to the communication channel. According to the electric drive assembly disclosed by the invention, oil liquid thrown out from the oil inlet end can be reduced, the cooling and lubricating effects on the motor shaft and the switching half shaft are ensured, and the normal work of the electric drive assembly is ensured.

Description

Technical Field

[0001] The present invention relates to the field of motor technology, and in particular to an electric drive assembly and a vehicle. Background Art

[0002] The main goal of cooling and lubrication of the electric drive assembly is to ensure that the temperature of the heat-generating components inside the electric drive assembly is controlled within a safe range. After the lubricating oil in the reducer cavity enters the components to be cooled and lubricated through splashing or designed oil channels, it exchanges heat with the components, takes away the heat from the heat-generating components, and the lubricating oil flows back to the reducer cavity, forming a cycle.

[0003] However, as the motor speed increases, the oil at the oil inlet end is thrown out due to centrifugal force during the rotation of the adapter half-shaft and the motor shaft, and cannot enter the middle oil channel, causing the flow rate of the lubricating oil through the middle oil channel to be significantly slowed down, and the lubricating oil may even stop flowing. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an electric drive assembly and a vehicle, which can reduce the oil being thrown out from the oil inlet end, thereby ensuring the amount of oil in the cooling channel and the flow speed of the oil in the cooling channel, ensuring the cooling and lubrication effect of the motor shaft and the adapter half shaft, and ensuring that the electric drive assembly can work normally.

[0005] The present invention also provides a vehicle, comprising the above-mentioned electric drive assembly.

[0006] According to an embodiment of the present invention, the electric drive assembly includes: a motor housing having an installation space and an oil inlet channel; a motor shaft, the motor shaft being arranged in the installation space; an adapter half shaft, the adapter half shaft including an end portion and a penetration portion, the penetration portion being penetrated in the motor shaft along the axial direction of the motor shaft, a cooling channel being formed between an outer peripheral wall of the penetration portion and an inner peripheral wall of the motor shaft, the end portion being arranged at one end of the penetration portion in the axial direction, the end portion and the motor shaft being spaced apart in the axial direction of the motor shaft, and a diameter of the end portion being larger than a diameter of the penetration portion; an oil deflector ring, the oil deflector ring being arranged between the end portion and the motor shaft, the oil deflector ring having a connecting channel for oil flow, and the oil in the oil inlet channel being able to flow to the connecting channel.

[0007] According to the electric drive assembly of the embodiment of the present invention, the penetration portion is penetrated in the motor shaft along the axial direction of the motor shaft, and a cooling channel is formed between the outer circumferential wall of the penetration portion and the inner circumferential wall of the motor shaft. The end portion is arranged at one end of the axial direction of the penetration portion, and the end portion and the motor shaft are spaced apart in the axial direction of the motor shaft, and the diameter of the end portion is larger than the diameter of the penetration portion; an oil retaining ring is arranged between the end portion and the motor shaft, and a connecting channel for oil flow is provided in the oil retaining ring, and the oil in the oil inlet channel can flow to the connecting channel. The setting of the oil retaining ring can reduce the oil being thrown out from the oil inlet end, thereby ensuring the amount of oil in the cooling channel and the flow speed of the oil in the cooling channel, ensuring the cooling and lubrication effect of the motor shaft and the adapter half shaft, and ensuring the normal operation of the electric drive assembly.

[0008] In some embodiments of the present invention, the connecting channel includes a first channel, and the oil retaining ring includes: a first ring portion; a second ring portion, the second ring portion and the first ring portion are both sleeved outside the penetration portion, the second ring portion is located on the side of the first ring portion facing the end portion and is spaced apart, and the outer diameter of the second ring portion is greater than the outer diameter of the first ring portion; a connecting portion, the connecting portion is arranged between the first ring portion and the second ring portion, and is connected to the first ring portion and the second ring portion, the connecting portion is a plurality of connecting portions spaced apart in the circumferential direction of the first ring portion, and the first channel is formed between two adjacent connecting portions.

[0009] In some embodiments of the present invention, the communication channel further includes a second channel, and a communication hole is provided on the second ring portion, and the communication hole forms the second channel.

[0010] In some embodiments of the present invention, the second ring portion has a first annular groove on a side facing away from the first ring portion, the first annular groove is arranged around the penetration portion, the radial inner end of the first annular groove is open, the end is spaced apart from the bottom wall of the first annular groove, and the outer contour of the end projected on the bottom wall of the first annular groove completely falls into the first annular groove.

[0011] In some embodiments of the present invention, the second ring portion further has a second annular groove on a side facing away from the first ring portion, the second annular groove is arranged around the penetration portion, the first annular groove is arranged on the bottom wall of the second annular groove, and along the axial direction of the motor shaft, the end surface of the end portion facing the penetration portion is flush with the bottom wall of the second annular groove.

[0012] In some embodiments of the present invention, a side of the first ring portion facing away from the second ring portion has a third annular groove, the third annular groove is arranged around the penetration portion, the motor shaft is arranged outside the third annular groove, and the projection of the motor shaft on the bottom wall of the third annular groove completely falls into the third annular groove.

[0013] In some embodiments of the present invention, along the axial direction of the motor shaft, an end surface of the motor shaft facing the first ring portion is flush with an end surface of the first ring portion facing away from the second ring portion.

[0014] In some embodiments of the present invention, a mounting hole is provided on the first ring portion, the penetration portion penetrates the mounting hole, and along the radial inward direction of the mounting hole, the hole wall of the mounting hole extends obliquely toward the motor shaft.

[0015] In some embodiments of the present invention, the oil deflector ring is clamped with the motor housing; and / or the oil deflector ring has a reinforcing rib on one side facing the end, the reinforcing rib extends in the radial direction of the oil deflector ring, and the reinforcing rib is a plurality of ribs spaced apart in the circumferential direction of the oil deflector ring.

[0016] A vehicle according to an embodiment of the present invention includes the above-mentioned electric drive assembly.

[0017] According to the vehicle of the embodiment of the present invention, by setting the above-mentioned electric drive assembly, the penetration portion is penetrated in the motor shaft along the axial direction of the motor shaft, and a cooling channel is formed between the outer circumferential wall of the penetration portion and the inner circumferential wall of the motor shaft. The end portion is arranged at one end of the penetration portion in the axial direction, and the end portion and the motor shaft are spaced apart in the axial direction of the motor shaft, and the diameter of the end portion is larger than the diameter of the penetration portion; an oil deflector is arranged between the end portion and the motor shaft, and the oil deflector has a connecting channel for the flow of oil, and the oil in the oil inlet channel can flow to the connecting channel. The setting of the oil deflector can reduce the oil from being thrown out from the oil inlet end, thereby ensuring the amount of oil in the cooling channel and the flow speed of the oil in the cooling channel, ensuring the cooling and lubrication effect of the motor shaft and the adapter half shaft, and ensuring that the electric drive assembly can work normally.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a partial cross-sectional view of an electric drive assembly according to an embodiment of the present invention, wherein the motor housing is not shown in its entirety;

[0021] Figure 2 is a partially enlarged view of a cross-sectional view of an electric drive assembly according to an embodiment of the present invention;

[0022] Figure 3 is a three-dimensional diagram of an oil deflector ring of an electric drive assembly according to an embodiment of the present invention;

[0023] Figure 4 It is a stereoscopic view of the oil deflector ring of the electric drive assembly according to an embodiment of the present invention from another perspective.

[0024] Reference numerals:

[0025] 10. Electric drive assembly;

[0026] 1. Motor housing; 11. Installation space; 12. Oil inlet channel; 121. First port; 122. Second port;

[0027] 2. Motor shaft; 21. Cooling channel;

[0028] 3. Adapter half shaft; 31. End portion; 32. Insertion portion;

[0029] 4. oil retaining ring; 41. first ring portion; 411. third annular groove; 412. mounting hole; 42. second ring portion; 421. first annular groove; 422. second annular groove; 43. connecting portion; 44. connecting channel; 441. first channel; 442. second channel; 45. hook; 46. reinforcing rib; 47. transfer channel;

[0030] 5. Bearings. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Reference below Figure 1-Figure 4 An electric drive assembly 10 according to an embodiment of the present invention is described.

[0035] like Figure 1-Figure 4 As shown, the electric drive assembly 10 according to an embodiment of the present invention includes: a motor housing 1, a motor shaft 2, a transfer half shaft 3 and an oil deflector 4.

[0036] Specifically, refer to Figure 1 and Figure 2 The motor housing 1 has an installation space 11 and an oil inlet channel 12; the motor shaft 2 is arranged in the installation space 11; the adapter half shaft 3 includes an end 31 and a penetration portion 32, the penetration portion 32 is penetrated in the motor shaft 2 along the axial direction of the motor shaft 2, and a cooling channel 21 is formed between the outer peripheral wall of the penetration portion 32 and the inner peripheral wall of the motor shaft 2.

[0037] It should be noted that both ends of the cooling channel 21 are connected to the oil inlet channel 12 (indirectly connected), so that the oil can circulate in the motor housing 1, and the cooling channel 21 is formed between the outer peripheral wall of the penetration portion 32 and the inner peripheral wall of the motor shaft 2. For example, in the present invention, the outer peripheral wall of the penetration portion 32 is separated from the inner peripheral wall of the motor shaft 2 to form a cooling channel 21, and the oil flows in the cooling channel 21, thereby realizing cooling and lubrication of the motor shaft 2 and the adapter half shaft 3.

[0038] Furthermore, if Figure 1 and Figure 2 As shown, the end portion 31 is arranged at one end of the penetration portion 32 in the axial direction, the end portion 31 and the motor shaft 2 are spaced apart in the axial direction of the motor shaft 2, and the diameter of the end portion 31 is larger than the diameter of the penetration portion 32; the oil retaining ring 4 is arranged between the end portion 31 and the motor shaft 2, and the oil retaining ring 4 has a connecting channel 44 for oil flow, and the oil in the oil inlet channel 12 can flow to the connecting channel 44.

[0039] It is understandable that the oil from the oil inlet channel 12 will first flow from the end 31 and the motor shaft 2 to the cooling channel 21, that is, the end of the motor shaft 2 facing the end 31 is the oil inlet end. When the speed of the motor shaft 2 is too high, the oil will be thrown out from the oil inlet end, thereby reducing the amount of oil entering the cooling channel 21. However, the present invention arranges the oil retaining ring 4 between the end 31 and the motor shaft 2, thereby reducing the oil thrown out from the oil inlet end, thereby ensuring the amount of oil in the cooling channel 21 and the flow speed of the oil in the cooling channel 21, ensuring the cooling and lubrication effect of the motor shaft 2 and the adapter half shaft 3, and ensuring that the electric drive assembly 10 can work normally.

[0040] In addition, since the oil retaining ring 4 has a connecting channel 44 for oil flow, the oil in the oil inlet channel 12 can flow to the connecting channel 44, the oil retaining ring 4 is sleeved outside the penetration portion 32, and the inner peripheral wall of the oil retaining ring 4 and the outer peripheral wall of the penetration portion 32 are separated to form a transfer channel 47, the transfer channel 47 is connected to the cooling channel 21, and the oil in the connecting channel 44 can flow to the transfer channel 47, so that the oil in the oil inlet channel 12 can flow into the cooling channel 21. Among them, due to the existence of the oil flow power (provided by gravitational potential energy or equipment such as motors), it can be ensured that the oil in the oil inlet channel 12 enters the cooling channel 21 without being blocked by the oil retaining ring 4, and the oil can circulate in the electric drive assembly 10.

[0041] Furthermore, if Figure 1 and Figure 2 As shown, the electric drive assembly 10 also includes: a bearing 5, which is connected to the motor housing 1, and is arranged on the side of the oil retaining ring 4 away from the motor shaft 2, and is sleeved outside the end 31. The oil inlet channel 12 has a first port 121 and a second port 122 spaced apart along the axial direction of the motor shaft 2. The first port 121 is used to supply oil to the cooling channel 21, and the second port 122 is used to supply oil to the bearing 5. In this way, the bearing 5, the motor shaft 2 and the adapter half shaft 3 can all be cooled and lubricated by oil, thereby ensuring the normal operation of the electric drive assembly 10.

[0042] According to the electric drive assembly 10 of the embodiment of the present invention, the penetration portion 32 is penetrated in the motor shaft 2 along the axial direction of the motor shaft 2, and a cooling channel 21 is formed between the outer peripheral wall of the penetration portion 32 and the inner peripheral wall of the motor shaft 2. The end portion 31 is arranged at one end of the penetration portion 32 in the axial direction, and the end portion 31 and the motor shaft 2 are spaced apart in the axial direction of the motor shaft 2, and the diameter of the end portion 31 is larger than the diameter of the penetration portion 32; the oil deflector 4 is arranged between the end portion 31 and the motor shaft 2, and the oil deflector 4 has a connecting channel 44 for oil flow, and the oil in the oil inlet channel 12 can flow to the connecting channel 44. The setting of the oil deflector 4 can reduce the oil from being thrown out from the oil inlet end, thereby ensuring the amount of oil in the cooling channel 21 and the flow speed of the oil in the cooling channel 21, ensuring the cooling and lubrication effect of the motor shaft 2 and the adapter half shaft 3, and ensuring that the electric drive assembly 10 can work normally.

[0043] In some embodiments of the present invention, Figure 2-Figure 4 As shown, the connecting channel 44 includes a first channel 441, and the oil retaining ring 4 includes: a first ring portion 41, a second ring portion 42 and a connecting portion 43. The second ring portion 42 and the first ring portion 41 are both sleeved outside the penetration portion 32, the second ring portion 42 is located on the side of the first ring portion 41 facing the end portion 31 and is spaced apart, and the outer diameter of the second ring portion 42 is greater than the outer diameter of the first ring portion 41; the connecting portion 43 is disposed between the first ring portion 41 and the second ring portion 42, and is connected to the first ring portion 41 and the second ring portion 42, and a plurality of connecting portions 43 are spaced apart in the circumferential direction of the first ring portion 41, and a first channel 441 is formed between two adjacent connecting portions 43.

[0044] It can be understood that the setting of the first ring portion 41 can reduce the oil from being thrown out from the oil inlet end, while the setting of the second ring portion 42 can reduce the oil from being thrown out from the end of the transfer channel 47 away from the first ring portion 41, thereby ensuring the amount of oil in the cooling channel 21 and the flow rate of the oil in the cooling channel 21, ensuring the cooling and lubrication effect on the motor shaft 2 and the transfer half shaft 3, and ensuring that the electric drive assembly 10 can operate normally.

[0045] In addition, the provision of the second ring portion 42 can also allow the oil to fully contact the end portion 31 , thereby playing a role in lubricating and cooling the end portion 31 .

[0046] Furthermore, if Figure 2-Figure 4As shown, the first channel 441 and the first port 121 are arranged relative to each other in the radial direction of the motor shaft 2, so that the oil from the first port 121 can better enter the first channel 441, thereby improving the oil intake efficiency. At the same time, the first channel 441 and the transfer channel 47 are connected, so that the oil can enter the cooling channel 21 through the first channel 441 and the transfer channel 47 in sequence. In addition, the extension directions of the first channel 441 and the transfer channel 47 are perpendicular to each other, thereby making the oil path tortuous, further reducing the oil from being thrown out from the oil inlet end, further ensuring the amount of oil in the cooling channel 21, and the flow rate of the oil in the cooling channel 21, further ensuring the cooling and lubrication effect on the motor shaft 2 and the transfer half shaft 3, and further ensuring that the electric drive assembly 10 can work normally.

[0047] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the connecting channel 44 also includes a second channel 442, and a connecting hole is provided on the second ring portion 42, and the connecting hole is formed as the second channel 442. It can be understood that the oil from the second channel 442 can also flow to the transfer channel 47, thereby increasing the channel for oil input, thereby further increasing the oil input efficiency, further ensuring the cooling and lubrication effect of the motor shaft 2 and the transfer half shaft 3, and further ensuring that the electric drive assembly 10 can work normally. In addition, the setting of the connecting hole can also reduce the weight of the oil retaining ring 4, which is conducive to the lightweight of the electric drive assembly 10.

[0048] Furthermore, if Figure 3 and Figure 4 As shown, the communicating holes are multiple and spaced apart in the circumferential direction of the second ring portion 42, thereby further increasing the channels for oil input, thereby further increasing the oil input efficiency, further ensuring the cooling and lubrication effect of the motor shaft 2 and the adapter half shaft 3, and further ensuring that the electric drive assembly 10 can work normally. It also further reduces the weight of the oil retaining ring 4, which is conducive to the lightweight of the electric drive assembly 10.

[0049] For example, Figure 3 and Figure 4 In the example shown, there are 16 communicating holes spaced apart in the circumferential direction of the second ring portion 42 , but the present invention is not limited thereto, and the number of communicating holes may be other numbers, such as 2, 5, 17 or 20.

[0050] In some embodiments of the present invention, Figure 2-Figure 4As shown, the second ring portion 42 has a first annular groove 421 on the side facing away from the first ring portion 41. The first annular groove 421 is arranged around the penetration portion 32, the radial inner end of the first annular groove 421 is open, the end portion 31 is spaced apart from the bottom wall of the first annular groove 421, and the outer contour of the end portion 31 projected on the bottom wall of the first annular groove 421 completely falls into the first annular groove 421.

[0051] It is understandable that the end portion 31 is spaced apart from the bottom wall of the first annular groove 421, so that the contact between the second ring portion 42 and the end portion 31 can be avoided, thereby avoiding installation interference between the second ring portion 42 and the end portion 31. The provision of the first annular groove 421 can reduce the space in the axial direction of the electric drive assembly 10 while ensuring the gap between the second ring portion 42 and the end portion 31, and at the same time reduce the weight of the oil retaining ring 4, which is beneficial to the lightweight of the electric drive assembly 10 and optimizes the volume of the electric drive assembly 10. The radial inner end of the first annular groove 421 is open, which can avoid the second ring portion 42 at the radial inner end of the first annular groove 421 from contacting the end portion 31, thereby further avoiding contact between the second ring portion 42 and the end portion 31, thereby avoiding installation interference between the second ring portion 42 and the end portion 31.

[0052] Furthermore, if Figure 2-Figure 4 As shown, the connecting channel 44 also includes a second channel 442. A connecting hole is provided on the second ring portion 42, and the connecting hole is formed as the second channel 442. The connecting hole and the first annular groove 421 are spaced apart in the radial direction of the second ring portion 42. The oil in the oil inlet channel 12 can enter the first annular groove 421 through the second channel 442, and then enter the cooling channel 21 through the transition channel 47.

[0053] At this time, the bottom wall of the first annular groove 421 is spaced apart from the end portion 31, so that the oil can smoothly enter the first annular groove 421, and the radial inner end of the first annular groove 421 is open, so that the oil can smoothly enter the transfer channel 47 from the first annular groove 421, thereby ensuring smooth flow of the oil.

[0054] In some embodiments of the present invention, Figure 2-Figure 4 As shown, the second ring portion 42 has a second annular groove 422 on the side facing away from the first ring portion 41. The second annular groove 422 is arranged around the penetration portion 32. The first annular groove 421 is arranged on the bottom wall of the second annular groove 422. Along the axial direction of the motor shaft 2, the end face of the end portion 31 facing the penetration portion 32 is flush with the bottom wall of the second annular groove 422.

[0055] It is understandable that the provision of the second annular groove 422 can further reduce weight, and along the axial direction of the motor shaft 2, the end surface of the end portion 31 facing the penetration portion 32 is flush with the bottom wall of the second annular groove 422, which can ensure the spacing between the end portion 31 and the bottom wall of the first annular groove 421, on the one hand, avoiding the distance between the end portion 31 and the bottom wall of the first annular groove 421 to be too small, thereby avoiding installation interference between the end portion 31 and the second ring portion 42. On the other hand, it can avoid the distance between the end portion 31 and the bottom wall of the first annular groove 421 to be too large, thereby ensuring the compactness of the electric drive assembly 10 in the axial direction, which is conducive to reducing the volume of the electric drive assembly 10.

[0056] Furthermore, the connecting channel 44 also includes a second channel 442. A connecting hole is provided on the second ring portion 42. The connecting hole is formed as the second channel 442. The connecting hole is provided on the bottom wall of the second annular groove 422. The setting of the second annular groove 422 increases the amount of oil between the second ring portion 42 and the end portion 31, thereby further improving the cooling and lubrication effects on the end portion 31.

[0057] In some embodiments of the present invention, Figure 2-Figure 4 As shown, the side of the first ring portion 41 facing away from the second ring portion 42 has a third annular groove 411, the third annular groove 411 is arranged around the penetration portion 32, the motor shaft 2 is arranged outside the third annular groove 411, and the projection of the motor shaft 2 on the bottom wall of the third annular groove 411 completely falls into the third annular groove 411.

[0058] It is understandable that the motor shaft 2 is spaced apart from the bottom wall of the third annular groove 411, thereby avoiding contact between the first ring portion 41 and the motor shaft 2, thereby avoiding installation interference between the first ring portion 41 and the motor shaft 2. The provision of the third annular groove 411 can reduce the space in the axial direction of the electric drive assembly 10 while ensuring the gap between the first ring portion 41 and the motor shaft 2, and at the same time reduce the weight of the oil retaining ring 4, which is conducive to lightweighting of the electric drive assembly 10 and optimizing the volume of the electric drive assembly 10.

[0059] At the same time, since the motor shaft 2 is separated from the bottom wall of the third annular groove 411, the oil from the oil inlet channel 12 can enter the cooling channel 21 along the gap between the motor shaft 2 and the third annular groove 411, thereby improving the oil intake efficiency, further ensuring the cooling and lubrication effect of the motor shaft 2 and the adapter half shaft 3, and further ensuring that the electric drive assembly 10 can work normally.

[0060] In some embodiments of the present invention, Figure 2-Figure 4As shown, along the axial direction of the motor shaft 2, the end surface of the motor shaft 2 facing the first ring portion 41 is flush with the end surface of the first ring portion 41 facing away from the second ring portion 42. In this way, the spacing between the motor shaft 2 and the bottom wall of the third annular groove 411 can be ensured, on the one hand, the distance between the motor shaft 2 and the bottom wall of the third annular groove 411 is prevented from being too small, thereby avoiding installation interference between the motor shaft 2 and the first ring portion 41. On the other hand, the distance between the motor shaft 2 and the bottom wall of the third annular groove 411 is prevented from being too large, thereby ensuring the compactness of the electric drive assembly 10 in the axial direction, which is conducive to reducing the volume of the electric drive assembly 10.

[0061] In some embodiments of the present invention, Figure 2-Figure 4 As shown, the first ring portion 41 is provided with a mounting hole 412, the penetration portion 32 is penetrated in the mounting hole 412, and along the radial inward direction of the mounting hole 412, the hole wall of the mounting hole 412 extends obliquely toward the motor shaft 2. Thus, the oil thrown out from the oil inlet end can be further reduced, thereby ensuring the amount of oil in the cooling channel 21 and the flow speed of the oil in the cooling channel 21, ensuring the cooling and lubrication effect of the motor shaft 2 and the adapter half shaft 3, and ensuring that the electric drive assembly 10 can work normally.

[0062] Furthermore, if Figure 2-Figure 4 As shown, along the radially outward direction of the first ring portion 41, the side wall of the radially outer end of the third annular groove 411 extends obliquely toward the motor shaft 2. As a result, the oil thrown out from the oil inlet end can be further reduced, thereby ensuring the amount of oil in the cooling channel 21 and the flow speed of the oil in the cooling channel 21, ensuring the cooling and lubrication effect on the motor shaft 2 and the adapter half shaft 3, and ensuring that the electric drive assembly 10 can work normally.

[0063] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the oil slinger ring 4 and the motor housing 1 are snap-fitted; thereby, a fixed connection between the oil slinger ring 4 and the motor housing 1 is achieved, and the connection and installation reliability between the oil slinger ring 4 and the motor housing 1 is improved.

[0064] It is understandable that if Figure 2 and Figure 3 As shown, the oil deflector 4 has a hook 45 on the side facing the motor shaft 2, and the hooks 45 are multiple and spaced apart along the circumferential direction of the oil deflector 4. The motor housing 1 has a groove (not shown) matching the hook 45, and the grooves correspond one-to-one to the multiple hooks 45, thereby achieving the connection between the oil deflector 4 and the motor housing 1.

[0065] Furthermore, if Figure 2-Figure 4As shown, the oil deflector 4 includes: a first ring portion 41, a second ring portion 42 and a connecting portion 43. The second ring portion 42 and the first ring portion 41 are both sleeved outside the penetration portion 32. The second ring portion 42 is located on the side of the first ring portion 41 facing the end portion 31 and is spaced apart. The outer diameter of the second ring portion 42 is greater than the outer diameter of the first ring portion 41. The connecting portion 43 is arranged between the first ring portion 41 and the second ring portion 42, and is connected to the first ring portion 41 and the second ring portion 42. The hook 45 is arranged on the side of the second ring portion 42 facing the first ring portion 41. The hook 45 is connected to the first ring portion 41 through a connecting rib. The connecting rib extends along the radial direction of the oil deflector 4. One end of the connecting rib is connected to the hook 45, and the other end is connected to the outer peripheral wall of the first ring portion 41. As a result, the strength of the hook 45 is improved, and the structure of the hook 45 is more reliable, thereby further improving the connection reliability and stability of the oil deflector 4 and the motor housing 1.

[0066] For example, Figure 3 In the example shown, there are four hooks 45 , but the present invention is not limited thereto. The hooks 45 may also be other numbers, such as 3, 5, 6 or 8.

[0067] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the side of the oil deflector 4 facing the end 31 has a reinforcing rib 46, and the reinforcing rib 46 extends along the radial direction of the oil deflector 4. It can be understood that the provision of the reinforcing rib 46 can improve the structural strength of the oil deflector 4, thereby improving the durability of the oil deflector 4.

[0068] Furthermore, if Figure 4 As shown, the reinforcing ribs 46 are multiple and spaced apart along the circumferential direction of the oil slinger ring 4. Thus, the structural strength of the oil slinger ring 4 is further improved, thereby improving the durability of the oil slinger ring 4. Figure 4 In the example shown, there are four reinforcing ribs 46 spaced apart along the circumferential direction of the oil deflector ring 4, but the present invention is not limited thereto, and the reinforcing ribs 46 may also be other numbers, such as 2, 3, 5 or 6.

[0069] Furthermore, if Figure 2 and Figure 4 As shown, along the radial inward direction of the oil thrower ring 4, the height of the reinforcing rib 46 gradually decreases, thereby reducing the weight of the oil thrower ring 4.

[0070] Furthermore, the oil retaining ring 4 comprises: a first ring portion 41, a second ring portion 42 and a connecting portion 43, wherein the second ring portion 42 and the first ring portion 41 are both sleeved outside the penetration portion 32, the second ring portion 42 is located on the side of the first ring portion 41 facing the end portion 31 and is spaced apart, and the outer diameter of the second ring portion 42 is greater than the outer diameter of the first ring portion 41; the connecting portion 43 is disposed between the first ring portion 41 and the second ring portion 42, and is connected to the first ring portion 41 and the second ring portion 42, and the reinforcing rib 46 is disposed on the side of the second ring portion 42 away from the first ring portion 41, and the two ends of the reinforcing rib 46 are respectively connected to the radial inner end and the radial outer end of the second ring portion 42. Thus, the structural strength of the second ring portion 42 is improved.

[0071] A vehicle according to an embodiment of the present invention will be described below.

[0072] The vehicle according to the embodiment of the present invention includes the electric drive assembly 10 described above.

[0073] According to the vehicle of the embodiment of the present invention, by setting the above-mentioned electric drive assembly 10, the penetration portion 32 is penetrated in the motor shaft 2 along the axial direction of the motor shaft 2, and a cooling channel 21 is formed between the outer peripheral wall of the penetration portion 32 and the inner peripheral wall of the motor shaft 2, and the end portion 31 is arranged at one end of the penetration portion 32 in the axial direction, and the end portion 31 and the motor shaft 2 are spaced apart in the axial direction of the motor shaft 2, and the diameter of the end portion 31 is larger than the diameter of the penetration portion 32; the oil deflector 4 is arranged between the end portion 31 and the motor shaft 2, and the oil deflector 4 has a connecting channel 44 for oil flow, and the oil in the oil inlet channel 12 can flow to the connecting channel 44. The setting of the oil deflector 4 can reduce the oil from being thrown out from the oil inlet end, thereby ensuring the amount of oil in the cooling channel 21 and the flow speed of the oil in the cooling channel 21, ensuring the cooling and lubrication effect of the motor shaft 2 and the adapter half shaft 3, and ensuring that the electric drive assembly 10 can work normally.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0075] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electric drive assembly, characterized in that: include: A motor housing, wherein the motor housing has an installation space and an oil inlet passage; A motor shaft, wherein the motor shaft is arranged in the installation space; A transfer half shaft, the transfer half shaft comprising an end portion and a penetration portion, the penetration portion is penetrated in the motor shaft along the axial direction of the motor shaft, a cooling channel is formed between the outer peripheral wall of the penetration portion and the inner peripheral wall of the motor shaft, the end portion is arranged at one end of the penetration portion in the axial direction, the end portion and the motor shaft are spaced apart in the axial direction of the motor shaft, and the diameter of the end portion is larger than the diameter of the penetration portion; An oil retaining ring is arranged between the end portion and the motor shaft, and has a connecting passage for oil flow therein, and the oil in the oil inlet passage can flow to the connecting passage.

2. The electric drive assembly according to claim 1, characterized in that: The communication channel includes a first channel, and the oil slinger ring includes: First ring part; a second ring portion, wherein the second ring portion and the first ring portion are both sleeved outside the penetration portion, the second ring portion is located on a side of the first ring portion facing the end portion and is spaced apart, and the outer diameter of the second ring portion is greater than the outer diameter of the first ring portion; A connecting portion is provided between the first ring portion and the second ring portion and is connected to the first ring portion and the second ring portion. The connecting portion is a plurality of connecting portions spaced apart in a circumferential direction of the first ring portion, and the first channel is formed between two adjacent connecting portions.

3. The electric drive assembly according to claim 2, characterized in that: The communication channel further includes a second channel. The second ring portion is provided with a communication hole, and the communication hole forms the second channel.

4. The electric drive assembly according to claim 2, characterized in that: The second ring portion has a first annular groove on one side facing away from the first ring portion. The first annular groove is arranged around the penetration portion. The radial inner end of the first annular groove is open, the end is spaced apart from the bottom wall of the first annular groove, and the outer contour of the end projected on the bottom wall of the first annular groove completely falls into the first annular groove.

5. The electric drive assembly according to claim 4, characterized in that: The second ring portion also has a second annular groove on the side facing away from the first ring portion, the second annular groove is arranged around the penetration portion, the first annular groove is arranged on the bottom wall of the second annular groove, and along the axial direction of the motor shaft, the end surface of the end portion facing the penetration portion is flush with the bottom wall of the second annular groove.

6. The electric drive assembly according to claim 2, characterized in that: A third annular groove is provided on a side of the first ring portion facing away from the second ring portion. The third annular groove is arranged around the penetration portion. The motor shaft is arranged outside the third annular groove. The projection of the motor shaft on the bottom wall of the third annular groove completely falls into the third annular groove.

7. The electric drive assembly according to claim 6, characterized in that: Along the axial direction of the motor shaft, an end surface of the motor shaft facing the first ring portion is flush with an end surface of the first ring portion facing away from the second ring portion.

8. The electric drive assembly according to claim 2, characterized in that: The first ring portion is provided with a mounting hole, the penetration portion is penetrated in the mounting hole, and along the radial inward direction of the mounting hole, the hole wall of the mounting hole extends obliquely toward the motor shaft.

9. The electric drive assembly according to claim 1, characterized in that: The oil deflector ring is clamped with the motor housing; And / or, the oil slinger ring has a reinforcing rib on one side facing the end portion, the reinforcing rib extends in a radial direction of the oil slinger ring, and the reinforcing rib is a plurality of reinforcing ribs spaced apart in a circumferential direction of the oil slinger ring.

10. A vehicle, characterized in that: Comprising an electric drive assembly according to any one of claims 1-9.

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