Electric drive assembly and vehicle

Abstract

The utility model relates to the technical field of electric drive systems, and particularly discloses an electric drive assembly and a vehicle. The electric drive assembly comprises a motor assembly, a speed reducer assembly and an oil pump assembly; the motor assembly comprises a motor shell and a motor located in the motor shell, an oil return hole is further formed in the motor shell, and the connecting line of the center of the oil return hole and the rotating axis of the motor intersects with the gravity direction. The speed reducer assembly comprises a speed reducer shell and a speed reducer located in the speed reducer shell, the speed reducer shell and the motor shell are connected to form an electric drive shell, and an oil pool is arranged in the speed reducer shell; the oil pump assembly is connected to the electric drive shell, and the orthographic projection, facing any direction of the electric drive shell, of the oil pump assembly is located in the outline range of the electric drive shell. The oil pump assembly comprises an oil pump and an oil pump cavity, the oil pump is connected with the oil pump cavity, the oil return hole communicates with the oil pump cavity, and the oil pump cavity further communicates with the oil pool. Through the structure, the height and the size of the electric drive assembly can be reduced, and the efficiency of the speed reducer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drive systems, and in particular to an electric drive assembly and a vehicle. Background Art

[0002] To cope with rising fuel prices and volatile international oil prices, my country is vigorously promoting the use of new energy sources, such as electricity and hydrogen. New energy vehicles are experiencing the most rapid growth. Regardless of whether they are powered by electricity or hydrogen, electric motors ultimately propel the vehicle. Compared to the internal combustion engines used in traditional vehicles, new energy vehicles place higher demands on their electric drive systems.

[0003] However, most of the electric drive assemblies currently used in new energy vehicles have problems such as large size and low reducer efficiency. Utility Model Content

[0004] The present application provides an electric drive assembly and a vehicle. The electric drive assembly can reduce the height and volume through an improved oil pump assembly and an oil return hole, and reduce the accumulation of oil in the oil pool by connecting the oil pool with the oil pump cavity, thereby improving or avoiding the phenomenon of the gears of the reducer contacting and stirring the oil pool, and improving the efficiency of the reducer.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide an electric drive assembly, which includes a motor assembly, a reducer assembly and an oil pump assembly; the motor assembly includes a motor housing and a motor located in the motor housing, and an oil return hole is also provided in the motor housing, and the line connecting the center of the oil return hole and the rotation axis of the motor intersects with the direction of gravity; the reducer assembly includes a reducer housing and a reducer located in the reducer housing, the reducer housing and the motor housing are connected to form an electric drive housing, and an oil pool is provided in the reducer housing; the oil pump assembly is connected to the electric drive housing, and the orthographic projection of the oil pump assembly in any direction toward the electric drive housing is within the contour of the electric drive housing; wherein, the oil pump assembly includes an oil pump and an oil pump cavity, the oil pump is connected to the oil pump cavity, the oil return hole is connected to the oil pump cavity, and the oil pump cavity is also connected to the oil pool.

[0006] The oil pump assembly also includes an oil pipe and an oil channel. The oil pipe is connected to the oil pump and the oil channel respectively. The oil channel is located in the reducer housing and has a plurality of oil holes facing the reducer.

[0007] Wherein, along the direction of gravity, the oil pool is located below the oil channel; along the direction of gravity, the oil pool is located at the lowest point of the reducer housing; and the reducer is arranged between the oil channel and the oil pool.

[0008] The reducer includes an output gear; the oil pool is arranged below the output gear, and there is a distance between the tangent line of the output gear toward the lowermost edge of the oil pool and the top surface of the oil pool toward the output gear.

[0009] Among them, the reducer also includes an input gear and an intermediate gear; the input gear is connected to the motor; along the direction of gravity, the axis center of the intermediate gear is higher than the axis centers of the output gear and the input gear; and along the direction of gravity, the lower end edges of the intermediate gear and the input gear are both higher than the lower end edge of the output gear.

[0010] Among them, the input gear, intermediate gear and output gear correspond to the oil holes of the oil channel respectively.

[0011] The reducer housing is provided with an inclined surface. Along the direction of gravity, the inclined surface is located below the input gear and the intermediate gear, and the inclined surface is connected to the oil pool.

[0012] There are two oil return holes, which are located on opposite sides of the rotation axis of the motor.

[0013] Among them, a partition is provided in the electric drive housing, which divides the electric drive housing into a motor component accommodating chamber and a reducer component accommodating chamber; among them, the housing part that encloses the motor component accommodating chamber is the motor housing; the housing part that encloses the reducer component accommodating chamber is the reducer housing.

[0014] The present application also includes a second technical solution, which provides a vehicle including the above-mentioned electric drive assembly.

[0015] The beneficial effects of the present application are as follows: Different from the prior art, the present application provides an electric drive assembly, which includes a motor assembly, a reducer assembly, and an oil pump assembly; the motor assembly includes a motor housing and a motor located in the motor housing, and an oil return hole is also provided in the motor housing, and the line connecting the center of the oil return hole and the rotation axis of the motor intersects with the direction of gravity, so that the oil return hole and the motor are misaligned in the direction of gravity, thereby reducing the height and volume of the electric drive assembly. The reducer assembly includes a reducer housing and a reducer located in the reducer housing, the reducer housing and the motor housing are connected to form an electric drive housing, and an oil pool is provided in the reducer housing; the oil pump assembly is connected to the electric drive housing, and the orthographic projection of the oil pump assembly in any direction toward the electric drive housing is within the outline of the electric drive housing, thereby reducing the volume of the electric drive assembly. Specifically, the oil pump assembly includes an oil pump and an oil pump chamber. The oil pump is connected to the oil pump chamber, the oil return hole is connected to the oil pump chamber, and the oil pump chamber is also connected to the oil pool, so that the oil in the oil pool can circulate in the oil pump chamber, reducing the accumulation of the oil pool, thereby improving or avoiding the phenomenon that the gears of the reducer contact and stir the oil pool, and improving the efficiency of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0017] Figure 1 1 is a schematic structural diagram of an embodiment of an electric drive assembly of the present application, wherein the electric drive assembly includes a motor assembly, a reducer assembly, and an oil pump assembly;

[0018] Figure 2 yes Figure 1 Schematic diagram of the structure of the reducer assembly and oil pump assembly;

[0019] Figure 3 yes Figure 1 A partially enlarged structural diagram of the middle reducer assembly;

[0020] Figure 4 is a schematic diagram of an oil circuit of an electric drive assembly according to an embodiment of the present application;

[0021] Figure 5 It is a structural schematic diagram of another embodiment of the electric drive assembly of the present application.

[0022] Figure numbers: 1. Motor assembly; 11. Motor housing; 111. Oil return hole; 12. Motor; 2. Reducer assembly; 21. Reducer housing; 211. Oil pool; 2111. Liquid level; 212. Inclined surface; 22. Reducer; 221. Output gear; 222. Intermediate gear; 223. Input gear; 100. Electric drive assembly; 101. Electric drive housing; 1011. Top cover; 3. Oil pump assembly; 31. Oil pump; 32. Oil pump chamber; 33. Oil pipe; 34. Oil channel; 35. Oil hole. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0024] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0027] Please refer to Figure 1 and Figure 2 , Figure 1 This is a structural diagram of an embodiment of an electric drive assembly provided by this application. Figure 2 yes Figure 1Schematic diagram of the structure of the reducer assembly and the oil pump assembly. In one aspect of the present application, an electric drive assembly 100 is provided, which includes a motor assembly 1, a reducer assembly 2 and an oil pump assembly 3; the motor assembly 1 includes a motor housing 11 and a motor 12 located in the motor housing 11, and an oil return hole 111 is also provided in the motor housing 11. The line connecting the center of the oil return hole 111 and the rotation axis of the motor 12 intersects with the gravity direction G, so that the oil return hole 111 and the motor 12 are misaligned in the gravity direction G, thereby reducing the height and volume of the electric drive assembly 100. The reducer assembly 2 includes a reducer housing 21 and a reducer 22 located in the reducer housing 21. The reducer housing 21 and the motor housing 11 are connected to form the electric drive housing 101. The reducer housing 21 is provided with an oil pool 211, and the oil pool 211 is used to accommodate oil. The oil pump assembly 3 is connected to the electric drive housing 101. The orthographic projection of the oil pump assembly 3 in any direction toward the electric drive housing 101 is within the outline of the electric drive housing 101, so that the oil pump assembly 3 does not exceed the size of the electric drive housing 101, thereby reducing the volume of the electric drive assembly 100. Specifically, the oil pump assembly 3 includes an oil pump 31 and an oil pump chamber 32. The oil pump 31 is connected to the oil pump chamber 32. The oil pump 31 can pump the oil in the oil pump chamber 32 into the reducer housing 21. The oil return hole 111 is connected to the oil pump chamber 32, and the oil pump chamber 32 is also connected to the oil pool 211, so that the oil in the oil pool 211 can circulate in the oil pump chamber 32, reducing the accumulation of the oil pool 211, thereby improving or avoiding the phenomenon that the gears of the reducer 22 contact and stir the oil pool 211, and improving the efficiency of the reducer 22.

[0028] Furthermore, the electric drive housing 101 can enclose the oil pump assembly 3, so that the volume of the entire electric drive assembly 100 is equal to the volume of the electric drive housing 101, improving or avoiding the impact of the oil pump assembly 3 on the volume of the electric drive assembly 100. The oil return hole 111 is provided on the motor housing 11 and connects the motor housing 11 with the oil pump cavity 32, so that the oil in the motor housing 11 can flow back into the oil pump cavity 32, and then the oil in the oil pump cavity 32 is pumped into the reducer housing 21 by the oil pump 31 to lubricate the reducer 22.

[0029] The line connecting the center of the oil return hole 111 and the rotation axis of the motor 12 intersects the gravity direction G, and the angle between them is α. Figure 1 As shown, the oil return hole 111 and the motor 12 are misaligned in the gravity direction G, which can improve or avoid the overlapping dimensions of the oil return hole 111 and the motor 12 in the gravity direction G to increase the height and volume of the motor housing 11, thereby reducing the height and volume of the motor housing 11.

[0030] During use, after lubricating the reducer 22, oil will inevitably accumulate in the oil pool 211. By connecting the oil pump chamber 32 with the oil pool 211, the accumulation of oil in the oil pool 211 can be reduced. On the one hand, the oil can be reused and circulated within the reducer housing 21, reducing costs. On the other hand, it can improve or avoid the impact of excessive accumulation in the oil pool 211 on the agitation of the gears of the reducer 22, thereby improving the efficiency of the reducer 22. Since the oil inevitably contains impurities, the above structure can also improve or avoid damage to the gears of the reducer 22 caused by impurities, thereby extending the service life.

[0031] In one embodiment of the present application, the oil pump assembly 3 further includes an oil pipe 33 and an oil channel 34 . The oil pipe 33 connects the oil pump 31 and the oil channel 34 respectively. The oil channel 34 is located in the reducer housing 21 . The oil channel 34 is provided with a plurality of oil holes 35 facing the reducer 22 .

[0032] Specifically, if Figure 4 As shown, Figure 4 This is a schematic diagram of the oil circuit of an embodiment of the electric drive assembly of the present application. The oil circuit of this embodiment is as follows: an oil pump 31 pumps the oil in the oil pump chamber 32 into an oil channel 34 via an oil pipe 33. Under the action of gravity, the oil in the oil channel 34 flows through an oil hole 35 to the reducer 22, lubricating the reducer 22. The oil then flows into the oil pool 211 and returns to the oil pump chamber 32, continuing its circulation. This structure reduces oil costs.

[0033] Furthermore, along the gravity direction G, the oil pool 211 is located below the oil passage 34 ; along the gravity direction G, the oil pool 211 is located at the lowest point of the reducer housing 21 ; the reducer 22 is disposed between the oil passage 34 and the oil pool 211 .

[0034] Therefore, the oil will definitely pass through the reducer 22 when it falls into the oil pool 211 through the oil hole 35 under the action of gravity, thereby achieving lubrication of the reducer 22 .

[0035] Please continue to combine Figure 1 and Figure 3 , Figure 3 yes Figure 1 A partially enlarged schematic diagram of the reducer assembly. In one embodiment of the present application, the reducer 22 includes an output gear 221. Specifically, an oil pool 211 is disposed below the output gear 221, with a spacing H between a tangent line from the bottom edge of the output gear 221 toward the oil pool 211 and the top surface of the oil pool 211 facing the output gear 221. This reduces or prevents the output gear 221 from contacting and agitating the oil pool 211, thereby improving the efficiency of the output gear 221.

[0036] As can be seen from the above structure, along the direction of gravity G, the height of the output gear 221 is greater than the height of the liquid level 2111 of the oil pool 211. This prevents the output gear 221 from agitating the oil pool 211 during operation, thereby improving or eliminating the resistance of the oil pool 211 to the rotation of the output gear 221, thereby improving work efficiency. Since the oil contains impurities, the oil pool 211 will inevitably contain impurities. Therefore, the distance H between the output gear 221 and the liquid level 2111 can also prevent impurities from damaging the output gear 221, thereby extending its service life. It should be noted that in the embodiment of the present application, the liquid level 2111 of the oil pool 211 is the top surface of the oil pool 211 facing the output gear 221.

[0037] In one embodiment of the present application, the reducer 22 further includes an input gear 223 and an intermediate gear 222. The input gear 223 is connected to the motor 12; along the direction of gravity G, the axis of the intermediate gear 222 is higher than the axis of the output gear 221 and the input gear 223; and along the direction of gravity G, the lower edges of the intermediate gear 222 and the input gear 223 are both higher than the lower edge of the output gear 221.

[0038] Specifically, the above structure enables the heights of the input gear 223 and the intermediate gear 222 along the gravity direction G to be greater than that of the output gear 221. Therefore, when the output gear 221 can avoid stirring the oil pool 211, the input gear 223 and the intermediate gear 222 can also avoid stirring the oil pool 211, thereby improving efficiency and extending service life.

[0039] During use, the motor 12 drives the input gear 223 to rotate, the input gear 223 drives the intermediate gear 222 to rotate, and the intermediate gear 222 drives the output gear 221 to rotate. In this process, the above structure can prevent the oil pool 211 from affecting the input gear 223, the intermediate gear 222 and the output gear 221.

[0040] Furthermore, along the direction of gravity G, the axis center of the intermediate gear 222 is higher than the axis centers of the output gear 221 and the input gear 223. In addition to making the lowermost edge of the intermediate gear 222 higher than the lowermost edge of the output gear 221, the intermediate gear 222 can also be offset from the input gear 223 and the output gear 221 in the horizontal direction perpendicular to the direction of gravity G, so as to reduce the space for arranging the intermediate gear 222, thereby reducing the volume of the reducer housing 21.

[0041] Furthermore, the input gear 223, the intermediate gear 222, and the output gear 221 can correspond one-to-one with the oil holes 35 of the oil passage 34, so that the oil can lubricate the input gear 223, the intermediate gear 222, and the output gear 221, thereby improving or preventing the oil from directly falling into the oil pool 211. After passing through the oil holes 35, at least a portion of the oil can accurately fall onto the input gear 223, the intermediate gear 222, and the output gear 221, thereby lubricating the input gear 223, the intermediate gear 222, and the output gear 221.

[0042] Furthermore, the reducer 22 further includes bearings, which are arranged between the oil passage 34 and the oil pool 211 and correspond one-to-one with the oil holes 35 so that the bearings can be lubricated by the oil.

[0043] Furthermore, to ensure that the oil flows evenly through the oil holes 35 within the oil passage 34 and avoid uneven lubrication of the input gear 223, intermediate gear 222, output gear 221, and bearings, the diameter of the oil holes 35 can be gradually increased from front to back. This structure gradually reduces the resistance encountered by the oil as it passes through the rear oil holes 35, increasing the flow rate through the rear oil holes 35 and thus improving the uniformity of the front-to-back flow rate. It should be noted that in the embodiment of the present application, the oil passage 34 extends from the input gear 223 toward the output gear 221. Therefore, the front-to-back direction herein refers to the direction closer to the input gear 223 as the front and the direction farther from the input gear 223 as the rear.

[0044] In one embodiment of the present application, the reducer housing 21 is provided with an inclined surface 212 . Along the gravity direction G, the inclined surface 212 is located below the input gear 223 and the intermediate gear 222 , and the inclined surface 212 is connected to the oil pool 211 .

[0045] Specifically, the provision of inclined surface 212 facilitates the flow of oil into oil pool 211, improving efficiency. After lubricating input gear 223 and intermediate gear 222, the oil can fall onto inclined surface 212 and then, under the action of gravity, flow along inclined surface 212 toward oil pool 211. In this embodiment of the present application, oil pool 211 is located below output gear 221, allowing oil to fall directly from output gear 221 into oil pool 211.

[0046] Of course, in another embodiment, the positions of the input gear 223, the intermediate gear 222, the output gear 221, the inclined surface 212 and the oil pool 211 may also be arranged in other ways, and the specific arrangement can be based on site requirements and the actual space size in the reducer housing 21.

[0047] In one embodiment of the present application, a partition is provided within the electric drive housing 101, which separates the housing 101 into a chamber for accommodating the motor assembly 1 and a chamber for accommodating the reducer assembly 2. Specifically, the housing portion enclosing the chamber for accommodating the motor assembly 1 is the motor housing 11; the housing portion enclosing the chamber for accommodating the reducer assembly 2 is the reducer housing 21. The electric drive housing 101 also includes a top cover 1011, which can be shared by the motor housing 11 and the reducer housing 21.

[0048] Specifically, through the above structure, the motor housing 11 and the reducer housing 21 are arranged in the same shell, avoiding the situation of separately arranging the motor 12 housing and the reducer 22 housing, which can save space and reduce volume.

[0049] In a specific embodiment, in addition to the accommodating chamber for the motor assembly 1 and the accommodating chamber for the reducer assembly 2, the partition can also separate the electric drive housing 101 into an accommodating chamber for the oil pump assembly 3. The accommodating chamber for the oil pump assembly 3 can be located between the accommodating chamber for the motor assembly 1 and the accommodating chamber for the reducer assembly 2, so that the oil pump chamber 32 communicates with the motor housing 11 and the reducer housing 21. The size of the accommodating chamber for the oil pump assembly 3 is smaller than the accommodating chamber for the motor assembly 1 and the accommodating chamber for the reducer assembly 2, so that the length and height of the oil pump 31 located in the accommodating chamber for the oil pump assembly 3 can be less than or equal to the motor housing 11 and the reducer housing 21, thereby ensuring that the orthographic projection of the oil pump assembly 3 in any direction toward the electric drive housing 101 is within the contour of the electric drive housing 101, thereby making the volume of the electric drive assembly 100 equal to the volume of the entire electric drive housing 101, thereby improving or avoiding the impact of the oil pump assembly 3 on the volume of the electric drive assembly 100.

[0050] In another embodiment of the present application, Figure 5 As shown, Figure 5 2 is a schematic structural diagram of another embodiment of the electric drive assembly of the present application. Different from the above embodiment, there are two oil return holes 111 , which are respectively located on opposite sides of the rotation axis of the motor 12 .

[0051] Specifically, along the direction of gravity G, the two oil return holes 111 are respectively located on the left and right sides below the motor 12. On the one hand, it can avoid the height overlap with the motor 12 and reduce the height of the motor housing 11; on the other hand, the two oil return holes 111 can improve the efficiency of oil flowing into the oil pump chamber 32.

[0052] In another aspect, the present application further provides a vehicle comprising the aforementioned electric drive assembly 100. Specifically, since the vehicle comprises the electric drive assembly 100 described in the above embodiment, it also has the beneficial effects of the above electric drive assembly 100, which will not be described in detail here.

[0053] It should be noted that terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or vertical, but rather that they may be slightly tilted. Terms such as "parallel" and "perpendicular" do not imply that components are absolutely parallel or perpendicular to each other, but rather that they may form a certain angular deviation. For example, "horizontal" simply means that its direction is more horizontal than "vertical" and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted. Furthermore, terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," and "counterclockwise" indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships typically used when the products of this application are used. These terms are intended solely to facilitate the description of the embodiments of this application and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0054] It is understood that the meaning of "plurality" herein is at least two, such as two, three, etc., unless there is a special limitation. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units that are inherent to these processes, methods, products or devices. The term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the related objects before and after are in an "or" relationship.

[0055] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An electric drive assembly, characterized in that: include: A motor assembly (1), the motor assembly (1) comprising a motor housing (11) and a motor (12) located in the motor housing (11); an oil return hole (111) is further provided in the motor housing (11); a line connecting the center of the oil return hole (111) and the rotation axis of the motor (12) intersects the direction of gravity; A reducer assembly (2), the reducer assembly (2) comprising a reducer housing (21) and a reducer (22) located in the reducer housing (21), the reducer housing (21) and the motor housing (11) being connected to form an electric drive housing (101), and an oil pool (211) being provided in the reducer housing (21); An oil pump assembly (3), the oil pump assembly (3) being connected to the electric drive housing (101), wherein an orthographic projection of the oil pump assembly (3) in any direction toward the electric drive housing (101) is located within the contour of the electric drive housing (101); in, The oil pump assembly (3) comprises an oil pump (31) and an oil pump chamber (32), the oil pump (31) is connected to the oil pump chamber (32), the oil return hole (111) is connected to the oil pump chamber (32), and the oil pump chamber (32) is also connected to the oil pool (211).

2. The electric drive assembly according to claim 1, characterized in that: The oil pump assembly (3) further comprises an oil pipe (33) and an oil passage (34), wherein the oil pipe (33) is connected to the oil pump (31) and the oil passage (34) respectively, and the oil passage (34) is located in the reducer housing (21), and the oil passage (34) is provided with a plurality of oil holes (35) facing the reducer (22).

3. The electric drive assembly according to claim 2, characterized in that: Along the gravity direction, the oil pool (211) is located below the oil channel (34); Along the direction of gravity, the oil pool (211) is located at the lowest point of the reducer housing (21); The speed reducer (22) is arranged between the oil passage (34) and the oil pool (211).

4. The electric drive assembly according to claim 1 or 3, characterized in that: The speed reducer (22) includes an output gear (221); wherein, The oil pool (211) is arranged below the output gear (221), and a distance exists between a tangent line of the output gear (221) toward the lowermost edge of the oil pool (211) and a top surface of the oil pool (211) toward the output gear (221).

5. The electric drive assembly according to claim 4, characterized in that: The speed reducer (22) further includes an input gear (223) and an intermediate gear (222); The input gear (223) is connected to the motor (12); Along the direction of gravity, the axis of the intermediate gear (222) is higher than the axis of the output gear (221) and the input gear (223); and along the direction of gravity, the lowermost edges of the intermediate gear (222) and the input gear (223) are both higher than the lowermost edge of the output gear (221).

6. The electric drive assembly according to claim 5, characterized in that: The input gear (223), the intermediate gear (222), and the output gear (221) correspond to the oil holes (35) of the oil passage (34) in a one-to-one manner.

7. The electric drive assembly according to claim 6, characterized in that: The reducer housing (21) is provided with an inclined surface (212). Along the gravity direction, the inclined surface (212) is located below the input gear (223) and the intermediate gear (222), and the inclined surface (212) is connected to the oil pool (211).

8. The electric drive assembly according to claim 1, characterized in that: There are two oil return holes (111), which are respectively located on two opposite sides of the rotation axis of the motor (12).

9. The electric drive assembly according to claim 1, characterized in that: A partition is provided in the electric drive housing (101), and the partition divides the electric drive housing (101) into a motor component (1) accommodating chamber and a reducer component (2) accommodating chamber; wherein, The housing portion surrounding the housing cavity of the motor assembly (1) is the motor housing (11); The housing portion that encloses the accommodating cavity of the reducer assembly (2) is the reducer housing (21).

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

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