Box body of electric assembly, electric assembly and vehicle

Abstract

The utility model relates to a box body of an electric assembly, the electric assembly and a vehicle, the box body of the electric assembly comprises an end cover, a middle shell and a motor shell which are connected in sequence, a first cavity used for containing a speed reducer is formed between the end cover and the middle shell, and a second cavity used for containing a motor is formed between the middle shell and the motor shell; the middle shell is provided with an oil passing hole allowing lubricating oil in the second cavity to flow into the first cavity and an overflow hole allowing the lubricating oil in the first cavity to flow into the second cavity when the lubricating oil reaches the preset liquid level. The motor and the speed reducer are respectively arranged in respective chambers, so that impurities generated by the speed reducer can be prevented from flowing to the motor and being magnetically attracted by the motor. Lubricating oil in the second cavity can enter the first cavity through the oil passing hole, oil in the first cavity flows back to the second cavity when reaching the overflow hole, and due to the fact that the overflow hole has a certain height, impurities in the first cavity can be deposited at the bottom end of the first cavity and cannot flow back to the second cavity through the overflow hole.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electric assemblies, and in particular to a housing of an electric assembly, an electric assembly, and a vehicle. Background Art

[0002] The electric assembly usually includes a housing and a motor and a reducer arranged in the housing. During the operation of the electric assembly, lubricating oil needs to be provided to the motor and the reducer respectively for lubrication and cooling.

[0003] In the common electric assemblies currently, the reducer and the motor are located in a through cavity, and lubricating oil is injected into the through cavity to lubricate and cool both. However, with such a design, when the vehicle tilts (for example, tilting left or right) and the motor side is lower than the reducer side, the lubricating oil at the reducer position will flow to the motor position in large quantities. Since the reducer is prone to produce metal impurities when working, the impurities will flow to the motor position along with the lubricating oil. Since the motor has strong magnetism when working, the impurities produced by the reducer will be adsorbed on the surface of the motor stator or rotor, resulting in the risk of bore scraping. Utility Model Content

[0004] An object of the present disclosure is to provide a housing of an electric assembly, an electric assembly, and a vehicle, so as to at least partially solve the problems existing in the related art.

[0005] In order to achieve the above-mentioned objectives, the present disclosure provides a housing of an electric assembly, comprising an end cover, an intermediate housing and a motor housing connected in sequence, a first chamber for accommodating a reducer is provided between the end cover and the intermediate housing, a second chamber for accommodating a motor is provided between the intermediate housing and the motor housing, wherein the intermediate housing is provided with an oil passage hole for lubricating oil in the second chamber to flow to the first chamber, and an overflow hole for lubricating oil in the first chamber to flow to the second chamber when the lubricating oil reaches a preset liquid level.

[0006] Optionally, the end cover and the intermediate housing are respectively provided with a plurality of bearing chambers, the bearing chambers being used to install bearings capable of carrying a power transmission shaft, and at least one of the plurality of bearing chambers is configured to receive lubricating oil from the oil hole and another bearing chamber.

[0007] Optionally, the end cover and / or the intermediate housing is provided with an oil passage connecting the two bearing chambers.

[0008] Optionally, the intermediate housing is provided with a first bearing chamber for installing a first bearing of the input shaft and a bearing of the motor shaft, and the first bearing of the input shaft and the bearing of the motor shaft are coaxial, wherein the first bearing chamber is provided with a first oil inlet and a first oil outlet corresponding to the first bearing of the input shaft, and a second oil inlet and a second oil outlet corresponding to the bearing of the motor shaft, and wherein the first oil inlet and the second oil inlet are respectively connected to the oil hole.

[0009] Optionally, the oil hole is connected to the first oil inlet and the second oil inlet respectively through an oil injection pipe.

[0010] Optionally, the intermediate housing is also provided with a second bearing chamber for installing the first bearing of the intermediate shaft, the second bearing chamber is provided with a third oil inlet and a third oil outlet, the first bearing chamber is also provided with a fourth oil inlet opposite to the first bearing of the input shaft, and a fifth oil inlet opposite to the motor shaft bearing, wherein the third oil outlet is connected to the fourth oil inlet through the first oil channel, and is connected to the fifth oil inlet through the second oil channel.

[0011] Optionally, the end cover is provided with a third bearing chamber for accommodating the second bearing of the input shaft, and a fourth bearing chamber for accommodating the second bearing of the intermediate shaft, the third bearing chamber is provided with a sixth oil inlet connected to the oil hole, and the fourth bearing chamber is provided with a seventh oil inlet connected to the oil hole.

[0012] Optionally, the end cover is provided with a receiving groove, and an oil baffle is provided at the groove position of the receiving groove to form an oil storage chamber, wherein the oil hole is connected to the oil storage chamber through an oil injection pipe, and the oil storage chamber is connected to the sixth oil inlet through the third oil channel, and is connected to the seventh oil inlet through the fourth oil channel.

[0013] Optionally, one intermediate housing and one end cover are respectively disposed on both sides of the motor housing.

[0014] Optionally, the intermediate housing is provided with a fifth bearing chamber for installing the output shaft bearing, the lowest point of the fifth bearing chamber is at a distance H1 from the lowest point of the first chamber in the height direction, and the center point of the overflow hole is at a distance H2 from the lowest point of the first chamber in the height direction, wherein 1 / 2≤H2 / H1≤2 / 3.

[0015] According to a second aspect of the present disclosure, there is provided an electric assembly, including a motor, a reducer and a housing of the electric assembly.

[0016] According to a third aspect of the present disclosure, a vehicle is provided, comprising the above-mentioned electric assembly.

[0017] Through the above technical solution, the motor and the reducer are arranged in their respective chambers (the motor is located in the second chamber and the reducer is located in the first chamber), which can avoid the problem that the lubricating oil in the first chamber flows to the second chamber due to the tilt of the vehicle, and then the impurities generated by the reducer follow the lubricating oil to flow to the vicinity of the motor and are magnetically attracted by the motor. In addition, when the electric assembly is working, the lubricating oil in the second chamber can enter the first chamber through the oil hole to lubricate and cool the reducer. When the oil level in the first chamber reaches the overflow hole, it can flow back to the second chamber through the overflow hole. Since the overflow hole has a certain height and the impurities in the first chamber can be deposited at the bottom of the first chamber due to gravity, the impurities in the first chamber will not flow back to the second chamber through the overflow hole, thereby further protecting the motor. Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0019] Figure 1 is an exploded view of a box of an electric assembly exemplarily shown according to the present disclosure;

[0020] Figure 2 yes Figure 1 A right side view of the end cover of the box body shown in FIG.

[0021] Figure 3 yes Figure 1 A left view of the middle shell of the box body shown in FIG.

[0022] Figure 4 yes Figure 1 A left view of the middle shell of the box body shown in FIG. 1 , wherein H1 and H2 are shown as examples;

[0023] Figure 5 yes Figure 1 A schematic diagram of the right side of the middle shell of the box body shown in FIG.

[0024] Figure 6 yes Figure 1 A schematic diagram of the left side of the middle shell of the box body shown in FIG.

[0025] Figure 7 yes Figure 1 A schematic diagram of the left side of the middle shell of the box body at a first angle shown in FIG.

[0026] Figure 8 yes Figure 1A second angle schematic diagram of the left side of the middle shell of the box body shown in FIG.

[0027] Fig. 9 yes Figure 1 A left side view of the end cover of the box body shown in FIG.

[0028] Fig.10 yes Figure 1 A right view of the middle shell of the box body shown in the figure, which is located on the left side;

[0029] Fig.11 yes Figure 1 A left side view of the motor housing of the box shown in FIG.

[0030] Description of Reference Numerals

[0031] 100-end cover; 101 first docking edge; 110-oil baffle; 200-intermediate housing; 300-motor housing; 301-second docking edge; 410-first chamber; 420-second chamber; 510-oil hole; 520-overflow hole; 610-first bearing chamber; 620-second bearing chamber; 630-third bearing chamber; 640-fourth bearing chamber; 650-fifth bearing chamber; 710-first oil inlet; 720-second oil inlet; 730-third oil inlet; 740-fourth oil inlet; 750-fifth oil inlet; 760-sixth oil inlet; 770-seventh oil inlet; 810-first oil outlet; 820-second oil outlet; 830-third oil outlet; 840-fourth oil outlet; 850-fifth oil outlet; 900-injection pipe. DETAILED DESCRIPTION

[0032] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0033] In the present disclosure, unless otherwise stated, directional words such as "left" and "right" used may be based on the paper direction of the drawings according to the context. For example, "from left to right" refers to the end cover, the intermediate housing, the motor housing, the intermediate housing and the end cover. Here, "left to right" refers to the direction of the drawings. Figure 1 As for the “left and right” in the direction of the paper, when the box of the electric assembly is actually applied to a vehicle, the left and right directions of the end cover and the shell may correspond to the width direction of the vehicle.

[0034] In the present disclosure, the terms "first", "second", etc. are used to distinguish one element from another element, and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0035] Reference Figure 1-Figure 11 , the present disclosure exemplarily shows a housing of an electric assembly, including an end cover 100, an intermediate housing 200 and a motor housing 300 connected in sequence, a first chamber 410 for accommodating a reducer is provided between the end cover 100 and the intermediate housing 200, and a second chamber 420 for accommodating a motor is provided between the intermediate housing 200 and the motor housing 300. Among them, the intermediate housing 200 is provided with an oil hole 510 for the lubricating oil in the second chamber 420 to flow to the first chamber 410, and an overflow hole 520 for the lubricating oil in the first chamber 410 to flow to the second chamber 420 when the lubricating oil reaches a preset liquid level. Among them, the lubricating oil in the second chamber 420 can be pumped to the first chamber 410 by an oil pump, and the lubricating oil in the first chamber 410 can automatically flow into the second chamber 420 by gravity.

[0036] It should be noted that the aforementioned “a first chamber 410 for accommodating the reducer is provided between the end cover 100 and the intermediate housing 200” means that in terms of spatial position, the first chamber 410 is located between the end cover 100 and the intermediate housing 200. In actual design, the first chamber 410 can be formed by the end cover 100, the intermediate housing 200 and the motor housing 300, or it can also be formed by only the end cover 100 and the intermediate housing 200. The present disclosure does not limit this. Similarly, in terms of spatial position, the second chamber 420 is located between the intermediate housing 200 and the motor housing 300. However, in actual design, the second chamber 420 can be formed by the end cover 100, the intermediate housing 200 and the motor housing 300, or it can also be formed by only the motor housing 300 and the intermediate housing 200. The present disclosure does not limit this.

[0037] The present disclosure does not limit the connection method between any two of the end cover 100, the intermediate housing 200 and the motor housing 300. Here, only the connection method between the end cover 100 and the motor housing 300 is exemplified. Figure 2 and Fig.11 , the end surface of the end cover 100 facing the motor housing 300 can form a first docking edge 101 near the periphery, and the end surface of the motor housing 300 facing the end cover 100 can form a second docking edge 301 near the periphery, wherein the first docking edge 101 and the second docking edge 301 can be configured to have the same profile and be provided with a plurality of relative bolt holes. During installation, the first docking edge 101 and the second docking edge 301 are aligned and connected using bolts and bolt holes. In some embodiments, in order to ensure the sealing of the first chamber 410 and the second chamber 420, a sealing gasket or the like can be provided between the first docking edge 101 and the second docking edge 301.

[0038] The present disclosure does not limit the specific structures of the end cover 100, the intermediate housing 200 and the motor housing 300 and the connection method between the two adjacent ones. For example, the two adjacent ones can be connected by bolts and nuts, as long as the three are connected in sequence and can form a first chamber 410 and a second chamber 420 that are separated from each other.

[0039] In the embodiment of the present disclosure, the oil hole 510 and the overflow hole 520 may be integrally formed with the intermediate housing 200. In addition, in some other embodiments, the oil hole 510 and the overflow hole 520 may be formed by punching the intermediate housing 200 after it is formed.

[0040] The present disclosure does not impose any limitation on the above-mentioned “preset liquid level”, which is related to the setting height of the overflow hole 520 (the overflow hole 520 is at a certain height from the bottom of the first chamber 410), and can be adaptively designed according to actual conditions, as long as the lubricating oil in the first chamber 410 can accumulate to reach the preset liquid level and then flow back to the second chamber 420 through the overflow hole 520.

[0041] By using the above technical solution, the motor and the reducer are arranged in their respective chambers (the motor is located in the second chamber 420 and the reducer is located in the first chamber 410), so that the lubricating oil in the first chamber 410 flows to the second chamber 420 due to the tilt of the vehicle, and then the impurities generated by the reducer follow the lubricating oil to flow to the vicinity of the motor and are magnetically attracted by the motor. In addition, when the electric assembly is working, the lubricating oil in the second chamber 420 can enter the first chamber 410 through the oil hole 510 to lubricate and cool the reducer. When the oil level in the first chamber 410 reaches the overflow hole 520, it can flow back to the second chamber 420 through the overflow hole 520. Since the overflow hole 520 has a certain height and the impurities in the first chamber 410 can be deposited at the bottom of the first chamber 410 due to gravity, the impurities in the first chamber 410 will not flow back to the second chamber 420 through the overflow hole 520, thereby further protecting the motor.

[0042] Reference Figure 2-Figure 11 In the embodiment of the present disclosure, the end cover 100 and the intermediate housing 200 may be respectively provided with a plurality of bearing chambers, the bearing chambers being used to install bearings capable of carrying the power transmission shaft, and at least one of the plurality of bearing chambers may be configured to receive lubricating oil from the oil hole 510 and another bearing chamber. With such a design, the bearing chamber receiving lubricating oil from the oil hole 510 and another bearing chamber can achieve a double lubrication effect on the bearing located in the bearing chamber, and has high reliability.

[0043] It should be explained that the vehicle electric assembly usually transmits power through a gear system. The "power transmission shaft" here can refer to the motor shaft, input shaft, intermediate shaft and output shaft mentioned below. These shafts transmit power through corresponding gear sets. The bearings here can refer to the first bearing of the input shaft and the motor shaft bearing mentioned below, and the bearing chambers here can refer to the first bearing chamber, the second bearing chamber, the third bearing chamber, etc. mentioned below.

[0044] The present disclosure does not limit how the bearing chamber specifically receives the lubricating oil from the oil hole 510 and the other bearing chamber, and specifically can be through an oil passage, an oil injection pipe, etc. For example, in some embodiments, the end cover 100 or the intermediate housing 200 can be provided with an oil passage (not shown in the figure) connecting the two bearing chambers, and the oil passage can be specifically an oil pipe, or can also be an oil guide groove formed on the intermediate housing 200 or the end cover 100. In addition, in some other embodiments, both the end cover 100 and the intermediate housing 200 can be provided with an oil passage for connecting the two bearing chambers. By providing an oil passage connecting the two bearing chambers, the lubricating oil in one bearing chamber can be discharged into the other bearing chamber through the oil passage for secondary lubrication and cooling, thereby improving the utilization rate of the lubricating oil and the cooling and lubrication effect. It should be noted that in the present disclosure, all the oil passages mentioned (such as the first oil passage, the second oil passage, etc.) can be oil pipes, or can also be oil guide grooves, oil guide channels, etc. opened on the intermediate housing 200 or the end cover 100, and this point will not be repeated below.

[0045] Reference Figure 7 and Figure 8 In the embodiment of the present disclosure, the intermediate housing 200 may be provided with a first bearing chamber 610 for mounting the first bearing of the input shaft and the bearing of the motor shaft, and the first bearing of the input shaft and the bearing of the motor shaft are coaxial. The first bearing chamber 610 may be provided with a first oil inlet 710 and a first oil outlet 810 corresponding to the first bearing of the input shaft, and a second oil inlet 720 and a second oil outlet 820 corresponding to the bearing of the motor shaft, and the first oil inlet 710 and the second oil inlet 720 are connected to the oil hole 510, respectively. With such a design, the lubricating oil passing through the oil hole 510 can be discharged to the first oil inlet 710 and the second oil inlet 720, respectively, and then the first bearing of the input shaft and the bearing of the motor shaft can be lubricated respectively. After lubrication, the lubricating oil can be discharged to the bottom of the first chamber 410, such as the oil pan, through the first oil outlet 810 and the second oil outlet 820.

[0046] The present disclosure does not limit how the oil hole 510 is connected to the first oil inlet 710 and the second oil inlet 720. Figure 7In the illustrated embodiment, the oil hole 510 can be connected to the first oil inlet 710 and the second oil inlet 720 respectively through the oil injection pipe 900. Specifically, the oil injection pipe 900 can be connected to the oil hole 510 at one end, and is provided with an oil injection nozzle connected to the first oil inlet 710 and the second oil inlet 720 respectively, and the lubricating oil is injected to the first oil inlet 710 and the second oil inlet 720 through the oil injection nozzle. In addition, in some other embodiments, the oil hole 510 can also be directly connected to the first oil inlet 710 and the second oil inlet 720 respectively through the oil pipe.

[0047] Reference Figure 5 and Figure 6 In the embodiment of the present disclosure, the intermediate housing 200 may also be provided with a second bearing chamber 620 for installing the first bearing of the intermediate shaft, and the second bearing chamber 620 may be provided with a third oil inlet 730 and a third oil outlet 830. The oil coming from the third oil inlet 730 lubricates and cools the first bearing of the intermediate shaft, and the lubricating oil can be discharged through the third oil outlet 830. The present disclosure does not limit the oil coming from the third oil inlet 730. For example, it may be connected to the oil hole 510, or it may be connected to cool and lubricate the first bearing of the intermediate shaft by receiving the lubricating oil splashed by the gear of the reducer. In this case, the third oil inlet 730 needs to be configured to be open and facing the upper side. The first bearing chamber 610 may also be provided with a fourth oil inlet 740 opposite to the first bearing of the input shaft, and a fifth oil inlet 750 opposite to the bearing of the motor shaft, wherein the third oil outlet 830 may be connected to the fourth oil inlet 740 through the first oil passage (not shown in the figure), and connected to the fifth oil inlet 750 through the second oil passage (not shown in the figure). With such a design, the lubricating oil discharged from the third oil outlet 830 can further lubricate and cool the first bearing of the input shaft and the motor shaft bearing through the fourth oil inlet 740 and the fifth oil inlet 750. When the first bearing chamber 610 is also provided with the first oil inlet 710 and the second oil inlet 720, with such a design, the first bearing of the input shaft and the motor shaft bearing can be cooled and lubricated respectively through the two oil channels of the oil hole 510 and the third oil outlet 830, thereby achieving a double lubrication effect.

[0048] Reference Fig. 9In some embodiments, the end cover 100 may be provided with a third bearing chamber 630 for accommodating the second bearing of the input shaft, and a fourth bearing chamber 640 for accommodating the second bearing of the intermediate shaft. The third bearing chamber 630 may be provided with a sixth oil inlet 760 communicating with the oil hole 510, and the fourth bearing chamber 640 may be provided with a seventh oil inlet 770 communicating with the oil hole 510. With such a design, the lubricating oil from the oil hole 510 may enter the third bearing chamber 630 through the sixth oil inlet 760 to cool and lubricate the second bearing of the input shaft, and may enter the fourth bearing chamber 640 through the seventh oil inlet 770 to cool and lubricate the second bearing of the intermediate shaft. After lubrication is completed, the lubricating oil may be discharged to the first chamber 410 through the fourth oil outlet 840 and the fifth oil outlet 850, respectively.

[0049] The present disclosure does not limit how the oil hole 510 is connected to the sixth oil inlet 760 and the seventh oil inlet 770. Fig. 9 In the illustrated embodiment, the end cover 100 may be provided with a receiving groove, and an oil baffle 110 may be provided at the notch position of the receiving groove to form an oil storage cavity. The oil hole 510 may be connected to the oil storage cavity through the oil injection pipe 900, and the oil storage cavity may be connected to the sixth oil inlet 760 through the third oil passage, and may be connected to the seventh oil inlet 770 through the fourth oil passage.

[0050] The present disclosure does not limit the specific structure and connection method of the containing groove and the oil baffle 110, as long as the two can form an oil storage chamber for containing lubricating oil. In this case, the oil injection pipe 900 can be provided with an oil injection nozzle connected to the oil storage chamber to discharge the lubricating oil from the oil hole 510 into the oil storage chamber. The advantage of such a design is that the available space at this position is small, and the oil injection pipe 900 cannot be directly connected to the sixth oil inlet 760 and the seventh oil inlet 770 through two oil injection nozzles. Of course, if there is enough space, the oil hole 510 can also be directly connected to the sixth oil inlet 760 and the seventh oil inlet 770 through two oil injection nozzles and the oil injection pipe (eliminating the oil storage chamber).

[0051] Reference Figure 1 In the embodiment of the present disclosure, an intermediate housing 200 and an end cover 100 may be respectively disposed on both sides of the motor housing 300. Figure 1 In the figure, from left to right are the end cover 100, the intermediate housing 200, the motor housing 300, the intermediate housing 200 and the end cover 100, that is, in this case, the housing of the electric assembly provided by the present invention can be used for an electric assembly including dual motors and dual reducers.

[0052] Reference Figure 4In the embodiment of the present disclosure, the intermediate housing 200 may be provided with a fifth bearing chamber 650 for mounting the output shaft bearing, the lowest point of the fifth bearing chamber 650 is at a height distance of H1 from the lowest point of the first chamber 410, and the center point of the overflow hole 520 is at a height distance of H2 from the lowest point of the first chamber 410, wherein 1 / 2≤H2 / H1≤2 / 3, specifically H2 / H1=1 / 2, or H2 / H1=2 / 3, or H2 / H1=3 / 5, etc. The purpose of such design is to ensure that the splash gear of the reducer is immersed in the lubricating oil to a moderate size, so as to avoid too large an immersion depth resulting in greater rotation resistance, or too small an immersion depth resulting in less splashing lubricating oil, thereby failing to meet the required lubrication and cooling effect.

[0053] According to a second aspect of the present disclosure, an electric assembly is provided, including a motor, a reducer and a housing of the electric assembly described above. Since the electric assembly has all the beneficial effects of the housing of the electric assembly described above, they are not described in detail here.

[0054] According to a third aspect of the present disclosure, a vehicle is provided, comprising the electric assembly described above. Since the vehicle has all the beneficial effects of the electric assembly described above, they will not be described in detail here.

[0055] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0057] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A box body of an electric assembly, characterized in that: It comprises an end cover, an intermediate housing and a motor housing connected in sequence, a first chamber for accommodating a reducer is provided between the end cover and the intermediate housing, and a second chamber for accommodating a motor is provided between the intermediate housing and the motor housing. The intermediate housing is provided with an oil passage hole for the lubricating oil in the second chamber to flow to the first chamber, and an overflow hole for the lubricating oil in the first chamber to flow to the second chamber when the lubricating oil reaches a preset liquid level.

2. The housing of the electric assembly according to claim 1, characterized in that: The end cover and the intermediate housing are respectively provided with a plurality of bearing chambers, and the bearing chambers are used to install bearings capable of supporting the power transmission shaft. At least one of the plurality of bearing chambers is configured to receive lubricating oil from the oil hole and another bearing chamber.

3. The housing of the electric assembly according to claim 2, characterized in that: The end cover and / or the intermediate housing is provided with an oil passage communicating with the two bearing chambers.

4. The housing of the electric assembly according to any one of claims 1 to 3, characterized in that: The intermediate housing is provided with a first bearing chamber for mounting a first bearing of the input shaft and a bearing of the motor shaft, wherein the first bearing of the input shaft and the bearing of the motor shaft are coaxial. The first bearing chamber is provided with a first oil inlet and a first oil outlet corresponding to the first bearing of the input shaft, and a second oil inlet and a second oil outlet corresponding to the bearing of the motor shaft. And wherein, the first oil inlet and the second oil inlet are respectively communicated with the oil through hole.

5. The housing of the electric assembly according to claim 4, characterized in that: The oil through hole is communicated with the first oil inlet and the second oil inlet respectively through the oil injection pipe.

6. The housing of the electric assembly according to claim 4, characterized in that: The intermediate housing is also provided with a second bearing chamber for mounting the first bearing of the intermediate shaft, the second bearing chamber is provided with a third oil inlet and a third oil outlet, the first bearing chamber is also provided with a fourth oil inlet opposite to the first bearing of the input shaft, and a fifth oil inlet opposite to the motor shaft bearing, The third oil outlet is connected to the fourth oil inlet through the first oil passage, and is connected to the fifth oil inlet through the second oil passage.

7. The housing of the electric assembly according to any one of claims 1 to 3, characterized in that: The end cover is provided with a third bearing chamber for accommodating the second bearing of the input shaft, and a fourth bearing chamber for accommodating the second bearing of the intermediate shaft. The third bearing chamber is provided with a sixth oil inlet connected to the oil hole, and the fourth bearing chamber is provided with a seventh oil inlet connected to the oil hole.

8. The housing of the electric assembly according to claim 7, characterized in that: The end cover is provided with a receiving groove, and an oil baffle is provided at the notch position of the receiving groove to form an oil storage cavity. The oil hole is connected to the oil storage chamber through an oil injection pipe, the oil storage chamber is connected to the sixth oil inlet through a third oil passage, and is connected to the seventh oil inlet through a fourth oil passage.

9. The housing of the electric assembly according to any one of claims 1 to 3, characterized in that: The intermediate housing and the end cover are respectively arranged on both sides of the motor housing.

10. The housing of the electric assembly according to any one of claims 1 to 3, characterized in that: The intermediate housing is provided with a fifth bearing chamber for installing the output shaft bearing, the lowest point of the fifth bearing chamber is at a height distance of H1 from the lowest point of the first chamber, and the center point of the overflow hole is at a height distance of H2 from the lowest point of the first chamber, wherein 1 / 2≤H2 / H1≤2 / 3.

11. An electric assembly, characterized in that: A housing comprising a motor, a reducer and the electric assembly according to any one of claims 1 to 10.

12. A vehicle, characterized in that: Includes the electric assembly as described in claim 11.

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