Electric motor and vehicle

Abstract

The present application discloses an electric motor and a vehicle. The electric motor comprises a housing, driving assemblies, and an oil pumping assembly; an oil sump used for accumulating lubricating oil is formed at the bottom of an inner cavity of the housing, a partition plate is arranged in the inner cavity, the partition plate divides the inner cavity into two chambers distributed in a left-right direction and independent of each other, and the bottom of the partition plate extends into the oil sump; a driving assembly is provided in each chamber; the oil pumping assembly is mounted on the partition plate and located in the oil sump; the partition plate is provided with at least two first oil passing holes, the at least two first oil passing holes are respectively provided on two sides of the oil pumping assembly in a front-rear direction, and the first oil passing holes make the two chambers communicated with each other.

Description

Electric motor and vehicle

[0001] Related applications

[0002] The present application claims priority to Chinese patent application No. 202411228949.7, filed on September 03, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of electric motors, in particular to an electric motor and a vehicle. BACKGROUND

[0004] In recent years, with the continuous development of the new energy vehicle industry, major automobile manufacturers and users pay more and more attention to the power system of new energy vehicles, especially the structural form of the power system and the spatial arrangement of the vehicle.

[0005] The distributed electric drive system gradually becomes the main choice of the power system of new energy vehicles in the prior art because it has the advantages of better traction, independent control of multiple motors, high energy efficiency and high space utilization.

[0006] However, the electric motor of the distributed electric drive system usually needs to be divided into independent chambers, and an independent motor is arranged in each chamber. However, since each motor is independently controlled, the specific working conditions in each chamber are also different, and the consumption of lubricating oil and the backflow speed in different chambers are different, which leads to different lubricating oil return efficiency in different chambers, resulting in problems such as lubricating oil accumulation, low circulation efficiency and high oil stirring loss in some chambers. SUMMARY

[0007] The main purpose of the present application is to provide an electric motor and a vehicle, which aims to solve the problems of lubricating oil accumulation, low circulation efficiency and high oil stirring loss in some chambers of the distributed electric drive system in the prior art.

[0008] To achieve the above-mentioned purpose, the electric motor provided by the present application comprises:

[0009] A housing, a lubricating oil accumulation area for accumulating lubricating oil is formed at the bottom of the inner cavity of the housing, a partition plate is arranged in the inner cavity, the partition plate divides the inner cavity into two chambers which are distributed along the left-right direction and independent of each other, and the bottom of the partition plate extends into the lubricating oil accumulation area;

[0010] A drive assembly is arranged in each chamber;

[0011] A pump oil assembly is mounted on the partition plate and located in the lubricating oil accumulation area, the pump oil assembly is used to extract lubricating oil from the lubricating oil accumulation area and pump it to each drive assembly;

[0012] At least two first oil passing holes are formed on the partition plate, and the at least two first oil passing holes are arranged on both sides of the oil pump assembly along the front-rear direction, and each of the first oil passing holes is communicated with the two chambers.

[0013] In an embodiment, each of the driving assemblies comprises a motor shaft gear, an intermediate shaft gear and an output shaft gear which are sequentially engaged, and the intermediate shaft gear and the motor shaft gear are located above the oil pump assembly.

[0014] In an embodiment, at least one second oil passing hole is further formed on the partition plate, and the second oil passing hole is arranged between the oil pump assembly and the motor shaft gear, and each of the second oil passing holes is communicated with the two chambers.

[0015] In an embodiment, the number of the second oil passing holes is multiple, and the multiple second oil passing holes are arranged below the motor shaft gear along the front-rear direction.

[0016] In an embodiment, each of the driving assemblies further comprises a motor rotor connected with the motor shaft gear and a motor stator sleeved outside the motor rotor, and a shell is sleeved outside the motor stator, and a bottom of the shell is provided with an oil return hole communicated with the oil accumulation area.

[0017] In an embodiment, in each of the chambers, the shell and the partition plate form a gear cavity communicated with the oil accumulation area, the motor shaft gear, the intermediate shaft gear and the output shaft gear are arranged in the gear cavity, the gear cavity is provided with an arc-shaped baffle, the arc-shaped baffle is arranged in a spaced manner with the output shaft gear, and the arc-shaped baffle extends upward along the outer periphery of the output shaft gear from the bottom of the output shaft gear, so that the arc-shaped baffle shields one side of the output shaft gear facing the oil pump assembly, and a guide oil rib is arranged at a position corresponding to the top end of the arc-shaped baffle in the chamber, and lubricating oil flowing along the arc-shaped baffle to the top end is guided to the oil accumulation area through the guide oil rib.

[0018] In an embodiment, in each of the chambers, one side of the arc-shaped baffle facing the output shaft gear forms an oil blocking area, and the partition plate is provided with at least one first oil passing hole at a position corresponding to the oil blocking area.

[0019] In an embodiment, a oil collecting structure is further arranged in each of the chambers, and the oil collecting structure is located above the meshing position of the intermediate shaft gear and the output shaft gear, and the oil collecting structure has an oil outlet, and the oil collecting structure is used for collecting lubricating oil splashed from the intermediate shaft gear and the meshing shaft gear, and spraying the collected lubricating oil to the intermediate shaft gear and the output shaft gear from the oil outlet.

[0020] In an embodiment, the oil pumping assembly comprises a suction filter and an oil pump, the suction filter is arranged at a position corresponding to the oil accumulation area of one of the chambers, and is used to suck and filter lubricating oil in the oil accumulation area and supply the lubricating oil to the oil pump, and the oil pump is used to pump lubricating oil for each of the driving assemblies.

[0021] The application also provides a vehicle, which comprises the electric motor.

[0022] The technical scheme of the application achieves independent driving by dividing the inner cavity of the shell into two independent chambers by the partition plate and arranging one driving assembly in each of the chambers. In addition, at least two first oil passing holes are arranged at a position corresponding to the oil accumulation area at the bottom of the partition plate, the two chambers are communicated through the at least two first oil passing holes, the lubricating oil in each of the chambers located in the oil accumulation area can be uniformly distributed, the problem of lubricating oil accumulation in a chamber is avoided, and the at least two first oil passing holes are respectively arranged at the front and back sides of the oil pumping assembly, i.e. at the two sides along the extension direction of the vehicle, so that when the vehicle body is inclined in uphill or downhill working conditions, at least one first oil passing hole can ensure the circulation of lubricating oil between the two chambers, thereby ensuring that there is no lubricating oil accumulation in the chambers in the special working conditions of the inclined vehicle body. The design of arranging the at least two first oil passing holes at the position corresponding to the oil accumulation area at the bottom of the partition plate enables the lubricating oil in each of the independent chambers to flow to each other, avoids the problem of lubricating oil accumulation in the chambers, thereby improving the circulation efficiency of the lubricating oil and reducing the problem of long-term residence of the lubricating oil at the driving assembly, thereby reducing the oil stirring loss. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the accompanying drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the application, and other accompanying drawings can be obtained by those skilled in the art without any creative effort based on the structures shown in the accompanying drawings.

[0024] Fig. 1 is a schematic structural view of a main view of the electric motor provided by the application;

[0025] Fig. 2 is a schematic structural view of a side view of an embodiment of the electric motor provided by the application;

[0026] Fig. 3 is a schematic structural view of the structure of Fig. 2 hidden driving assembly and oil pumping assembly;

[0027] Fig. 4 is a schematic structural view of a side view of another embodiment of the electric motor provided by the application;

[0028] Fig. 5 is a schematic structural view of a part of a side view of an embodiment of the electric motor provided by the application.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 100, electric motor; 1, housing; 11, oil accumulation area; 12, partition; 121, first oil passage hole; 122, second oil passage hole; 13, chamber; 14, shell; 141, oil return hole; 15, gear chamber; 151, arc-shaped baffle; 152, oil guide rib; 153, oil blocking area; 16, oil collection structure; 161, oil outlet; 2, driving assembly; 21, motor shaft gear; 22, intermediate shaft gear; 23, output shaft gear; 24, motor rotor; 25, motor stator; 3, oil pumping assembly; 31, suction filter.

[0031] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Embodiments of the present application

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0034] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, “and / or” or “and / or” appearing throughout the text means that the three parallel solutions are included, for example, “A and / or B” includes A solution, or B solution, or A and B solutions are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0035] The internal part of the distributed electric drive motor usually needs to be divided into independent chambers, and each chamber is provided with an independent motor. However, since each motor is independently controlled, the specific working conditions in each chamber are also different, and the consumption and backflow speed of the lubricating oil in different chambers are also different, which leads to different lubricating oil backflow efficiency in different chambers, and causes problems such as accumulation of lubricating oil in some chambers, low circulation efficiency and high oil stirring loss.

[0036] To solve the above problems, the application provides an electric motor 100.

[0037] Please combine FIG. 1 to FIG. 3, in an embodiment of the application, the electric motor 100 includes a shell 1, a drive assembly 2 and an oil pumping assembly 3, the bottom of the inner cavity of the shell 1 is formed with an oil accumulation area 11 for accumulating lubricating oil, a partition plate 12 is arranged in the inner cavity, the partition plate 12 divides the inner cavity into two chambers 13 distributed along the left-right direction and independent of each other, the bottom of the partition plate 12 extends into the oil accumulation area 11; the drive assembly 2 is arranged in each chamber 13; the oil pumping assembly 3 is installed on the partition plate 12 and located in the oil accumulation area 11, the oil pumping assembly 3 is used to pump lubricating oil from the oil accumulation area 11 to each drive assembly 2; at least two first oil holes 121 are formed on the partition plate 12, the at least two first oil holes 121 are arranged on the two sides of the oil pumping assembly 3 along the front-rear direction, and each first oil hole 121 communicates the two chambers 13.

[0038] It should be noted that the above left-right direction is the left-right direction of the vehicle as a reference, that is, the width direction of the vehicle, and the front-rear direction is the direction of the vehicle as a reference, that is, the length direction of the vehicle, the number of first oil holes 121 is at least one on the front and rear sides of the oil pumping assembly 3, and the specific number and opening area of the first oil holes 121 can be changed according to the actual application scene and demand. Since the area of the first oil hole 121 is smaller than the overall structure and cannot be seen clearly, the gray area is used instead, such as the two sides of the triangular gray area in FIG. x, which represents the position of the first oil hole 121.

[0039] The technical scheme of the present application adopts the above technical features, divides the inner cavity of the shell 1 into two independent chambers 13 by the partition plate 12, and sets one driving assembly 2 in each chamber 13 to realize independent driving. Then, at least two first oil passing holes 121 are arranged at the bottom of the partition plate 12 corresponding to the position of the oil accumulation area 11, the two chambers 13 are communicated through the at least two first oil passing holes 121, the lubricating oil in each chamber 13 located at the oil accumulation area 11 can be uniformly distributed, and the problem of lubricating oil accumulation in a chamber 13 is avoided. At the same time, the at least two first oil passing holes 121 are respectively located on the front and rear sides of the oil pumping assembly 3, that is, on both sides along the extension direction of the vehicle, so that when the vehicle is in uphill or downhill working conditions, at least one first oil passing hole 121 ensures the circulation of lubricating oil between the two chambers 13, thereby ensuring that there is no lubricating oil accumulation in the chamber 13 under the special working condition of vehicle body inclination. The present application sets at least two first oil passing holes 121 at the bottom of the partition plate 12 corresponding to the position of the oil accumulation area 11, so that the lubricating oil in each independent chamber 13 can flow to each other, avoiding the accumulation of lubricating oil in the chamber 13, thereby improving the circulation efficiency of the lubricating oil and reducing the situation that the lubricating oil stays at the driving assembly 2 for too long, thereby reducing the oil stirring loss.

[0040] Specifically, the oil pumping assembly 3 is located at the middle of the partition plate 12 along the left-right direction, so that when the vehicle is in a tilted posture along the left-right direction, the oil inlet of the oil pumping assembly 3 can still be ensured to be below the lubricating oil level, ensuring the oil supply of the oil pumping assembly 3, thereby improving the adaptability of the vehicle under different postures.

[0041] In an embodiment, each driving assembly 2 includes a motor shaft gear 21, an intermediate shaft gear 22 and an output shaft gear 23 which are engaged in sequence, and the intermediate shaft gear 22 and the motor shaft gear 21 are located above the oil pumping assembly 3. By arranging the intermediate shaft gear 22 and the motor shaft gear 21 above the oil pumping assembly 3, the layout of the driving assembly 2 in each chamber 13 is more reasonable, space is saved, and at the same time, the intermediate shaft gear 22 and the motor shaft gear 21 are prevented from being soaked in lubricating oil for a long time, the lubricating oil is prevented from increasing the friction of the motor shaft gear 21 and the intermediate shaft gear 22, gear wear is prevented, and oil stirring loss is reduced.

[0042] Further, the partition plate 12 is further provided with at least one second oil passing hole 122, the second oil passing hole 122 is correspondingly arranged between the oil pumping assembly 3 and the motor shaft gear 21, and each second oil passing hole 122 is communicated with the two chambers 13. The second oil passing hole 122 is arranged above the oil pumping assembly 3 and below the motor shaft gear 21. Understandably, in the case that the vehicle is in a horizontal state or a small inclination angle, the second oil passing hole 122 is higher than the oil accumulation area 11, and a small amount of lubricating oil splashed on the partition plate 12 or the driving assembly 2 can enter the other chamber 13 through the second oil passing hole 122, but the lubricating oil in the oil accumulation area cannot flow into the other chamber 13 through the second oil passing hole 122. However, when the vehicle is in a state of a large inclination angle, such as when the vehicle is downhill, the lubricating oil is exchanged and circulated through the front first oil passing hole 121 and the second oil passing hole 122. At this time, because of the change of the posture of the vehicle, the rear first oil passing hole 121 is higher than the liquid level of the lubricating oil, and does not play a role in the circulation of the lubricating oil. When the vehicle is downhill, the situation is the opposite, which will not be described here. The design of the second oil passing hole 122 increases the area of communication between the two chambers 13, thereby improving the circulation efficiency of the lubricating oil, and at the same time, providing sufficient lubricating oil flow between the two chambers 13 of the vehicle in a special posture, and ensuring the uniform circulation efficiency of the lubricating oil between the chambers 13 in any posture.

[0043] As described above, the plurality of spaced apart gray block regions at the top of the triangular gray region represent the second oil passing hole 122. Because the corresponding position of the oil pumping assembly 3, i.e. the triangular shaded part in the figure x, will cause the oil in the oil accumulation area to leak when uphill, the first oil passing hole 121 is arranged on both sides of the oil pumping assembly 3 along the front-rear direction, i.e. avoiding the triangular shaded part.

[0044] Specifically, the number of second oil passing holes 122 is multiple, and the multiple second oil passing holes 122 are arranged below the motor shaft gear 21 along the front-rear direction. By arranging multiple second oil passing holes 122, the possibility of lubricating oil flowing from the second oil passing hole 122 to the other chamber 13 is improved, the circulation efficiency of the lubricating oil is improved, and more channels for the circulation of the lubricating oil are provided when the vehicle is in an inclined posture.

[0045] Further, each driving assembly 2 further comprises a motor rotor 24 connected with the motor shaft gear 21 and a motor stator 25 sleeved outside the motor rotor 24, and the motor stator 25 is sleeved with a shell 14, and the bottom of the shell 14 is provided with an oil return hole 141 communicated with the oil accumulation area 11. The lubricating oil in the motor rotor 24 and the stator is returned to the oil accumulation area through the oil return hole 141 at the bottom of the shell 14, which ensures the circulation performance of the lubricating oil and ensures uniform lubrication, and also avoids the accumulation of oil in the shell 14 to reduce the wear of the motor rotor 24 and the stator and reduce the failure rate.

[0046] The bottom of the shell 14 is spaced from the bottom of the housing 1 to form a return channel, so that the lubricating oil flowing out of the shell 14 directly returns to the pump oil assembly 3 through the return channel, improving the circulation efficiency of the lubricating oil.

[0047] In an embodiment, in each chamber 13, the shell 14 and the partition plate 12 form a gear cavity 15 in communication with the oil accumulation area 11, the motor shaft gear 21, the intermediate shaft gear 22 and the output shaft gear 23 are all arranged in the gear cavity 15, the gear cavity 15 is provided with an arc-shaped baffle 151, the arc-shaped baffle 151 is arranged in spaced relation with the output shaft gear 23, and the arc-shaped baffle 151 extends upward from the bottom of the output shaft gear 23 along the outer periphery of the output shaft gear 23, so that the arc-shaped baffle 151 shields the side of the output shaft gear 23 facing the pump oil assembly 3, and the chamber 13 is further provided with a lubricating oil guide rib 152 at the position corresponding to the top end of the arc-shaped baffle 151, so that the lubricating oil flowing along the arc-shaped baffle 151 to the top end is guided to the oil accumulation area 11. Understandably, the lubricating oil in the shell 14 returns to the oil accumulation area through the oil return hole 141, and the bottom of the gear cavity 15 is not shielded, so the lubricating oil on the motor shaft gear 21, the intermediate shaft gear 22 and the output shaft gear 23 directly falls into the oil accumulation area, the arc-shaped baffle 151 is arranged on the outer periphery of the side of the output shaft gear 23 facing the pump oil assembly 3, and the lubricating oil guide rib 152 is arranged at the top of the arc-shaped baffle 151, so that the lubricating oil is guided to the oil accumulation area through the lubricating oil guide rib 152, and the setting of the arc-shaped baffle 151 causes a certain oil level to be accumulated between the output shaft gear 23 and the arc-shaped baffle 151, so that the oil level is higher than the oil inlet of the pump oil assembly 3 at all angles to meet the demand of the hydraulic system, and the lubricating oil is guided by the lubricating oil guide rib 152 to avoid the oil inlet of the pump oil assembly 3.

[0048] In an embodiment, the lubricating oil guide rib 152 and the oil inlet of the pump oil assembly 3 are arranged at an angle of 45°, so that the lubricating oil can just avoid the oil inlet of the pump oil assembly 3 under the guidance of the lubricating oil guide rib 152, improving the rationality of the layout.

[0049] In an embodiment, in each chamber 13, the side of the arc-shaped baffle 151 facing the output shaft gear 23 forms an oil blocking area 153, and the partition plate 12 is provided with at least one first oil passing hole 121 at the position corresponding to the oil blocking area 153. The first oil passing hole 121 is arranged on the side of the arc-shaped baffle 151 facing the output shaft gear 23, that is, the side facing away from the pump oil assembly 3, as described above, so that the first oil passing hole 121 does not cause the oil in the oil accumulation area to leak when the vehicle is in an uphill posture, ensuring the oil supply of the pump oil assembly 3.

[0050] Please combine Figure 4 and Figure 5, in an embodiment, each chamber 13 is further provided with an oil collecting structure 16, which is located above the meshing position of the intermediate shaft gear 22 and the output shaft gear 23, and has an oil outlet 161. The oil collecting structure 16 is used to collect the lubricating oil splashed from the intermediate shaft gear 22 and the meshing shaft gear, and spray the collected lubricating oil from the oil outlet 161 to the intermediate shaft gear 22 and the output shaft gear 23. By arranging the oil collecting structure 16 above the meshing position of the intermediate shaft gear 22 and the output shaft gear 23, and collecting the lubricating oil splashed from the intermediate shaft gear 22 and the meshing shaft gear by the oil collecting structure 16, on the one hand, the oil level in the oil accumulation part can be reduced, the oil stirring loss can be reduced, and the accumulation of oil in the oil accumulation part can be avoided; on the other hand, the lubricating oil can be accumulated and sprayed from the oil outlet 161 to the intermediate shaft gear 22 and the output shaft gear 23, so that the intermediate shaft gear 22 and the output shaft gear 23 are lubricated again, and the intermediate shaft gear 22 can also deliver the lubricating oil to the motor shaft gear 21, thereby improving the uniformity of the lubricating oil coating of the entire drive assembly 2 and improving the lubricating effect.

[0051] Specifically, the oil pumping assembly 3 includes a suction filter 31 and an oil pump. The suction filter 31 is located at a position corresponding to the oil accumulation area 11 in one of the chambers 13, and is used to suck and filter the lubricating oil in the oil accumulation area 11 and supply it to the oil pump. The oil pump is used to pump lubricating oil for each drive assembly 2. When the suction filter 31 sucks the lubricating oil from the oil accumulation part, larger impurities and particles in the lubricating oil are filtered out to avoid damage and wear to the components in the oil pump and other drive assemblies 2, ensure the cleanliness of the lubricating oil, maintain the performance of the oil, improve the overall efficiency of the motor 100, thereby prolonging the service life of the motor 100 and improving the stability of the motor 100.

[0052] The application also provides a vehicle applying the above-mentioned motor 100. The specific structure of the motor 100 is referred to the above-mentioned embodiments. Since the vehicle adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. The vehicle applying the above-mentioned motor 100 can ensure that the oil inlet of the oil pumping assembly 3 is below the lubricating oil level, and the oil pumping assembly 3 is supplied with oil, thereby improving the adaptability of the vehicle in different postures.

[0053] The above-mentioned is only an exemplary embodiment of the application, and does not limit the patent scope of the application. Any equivalent structural transformation made by using the content of the application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. An electric motor wherein, The electric motor comprises: a housing, a bottom of an inner cavity of the housing is formed with an oil accumulation area for accumulating lubricating oil, a partition plate is arranged in the inner cavity, the partition plate divides the inner cavity into two chambers distributed along a left-right direction and independent of each other, a bottom of the partition plate extends into the oil accumulation area; a drive assembly is arranged in each of the chambers; a pump oil assembly is mounted on the partition plate and located in the oil accumulation area, the pump oil assembly is used for pumping lubricating oil from the oil accumulation area to each of the drive assemblies; at least two first oil passing holes are formed in the partition plate, the at least two first oil passing holes are arranged on two sides of the pump oil assembly along a front-rear direction, and each of the first oil passing holes communicates the two chambers.

2. The electric motor of claim 1, wherein, Each of the drive assemblies comprises a motor shaft gear, an intermediate shaft gear and an output shaft gear which are sequentially engaged, the intermediate shaft gear and the motor shaft gear are located above the pump oil assembly.

3. The electric motor of claim 2, wherein, At least one second oil passing hole is further formed in the partition plate, the second oil passing hole is arranged between the pump oil assembly and the motor shaft gear, and each of the second oil passing holes communicates the two chambers.

4. The electric motor of claim 3, wherein, The number of the second oil passing holes is multiple, and the multiple second oil passing holes are arranged below the motor shaft gear along the front-rear direction.

5. The electric motor of claim 2, wherein, Each of the drive assemblies further comprises a motor rotor connected with the motor shaft gear and a motor stator sleeved outside the motor rotor, a housing is sleeved outside the motor stator, and a bottom of the housing is formed with an oil return hole which communicates with the oil accumulation area.

6. The electric motor of claim 5, wherein, In each of the chambers, the housing and the partition plate enclose a gear cavity which communicates with the oil accumulation area, the motor shaft gear, the intermediate shaft gear and the output shaft gear are arranged in the gear cavity, the gear cavity is provided with an arc-shaped baffle which is arranged in a spaced manner with the output shaft gear and extends upward along an outer periphery of the output shaft gear from a bottom of the output shaft gear, so that the arc-shaped baffle shields a side of the output shaft gear which faces the pump oil assembly, and a position of a top end of the arc-shaped baffle in the chamber is further provided with an oil guide rib, lubricating oil flowing along the arc-shaped baffle to the top end of the arc-shaped baffle is guided to the oil accumulation area through the oil guide rib.

7. The electric motor of claim 6, wherein, In each of the chambers, a side of the arc-shaped baffle which faces the output shaft gear forms an oil blocking area, and the partition plate is formed with at least one first oil passing hole at a position corresponding to the oil blocking area.

8. The electric motor of claim 2, wherein, Each of the chambers is further provided with an oil collecting structure which is located above a meshing position of the intermediate shaft gear and the output shaft gear, the oil collecting structure has an oil outlet, and the oil collecting structure is used for collecting lubricating oil splashed from the intermediate shaft gear and the meshing shaft gear and spraying the collected lubricating oil to the intermediate shaft gear and the output shaft gear through the oil outlet.

9. The electric motor of any one of claims 1 to 8, wherein, The pump oil assembly comprises a suction filter and an oil pump, the suction filter is located at a position of one of the chambers corresponding to the oil accumulation area, the suction filter is used for sucking and filtering lubricating oil in the oil accumulation area and supplying the lubricating oil to the oil pump, and the oil pump is used for pumping lubricating oil for each of the drive assemblies.

10. A vehicle, wherein, The vehicle is applied with the electric motor according to any one of claims 1 to 9.

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