Shell assembly and high-speed motor

Abstract

The invention discloses a shell assembly and a high-speed motor, and relates to the technical field of motors, the shell assembly comprises a shell body and a stator assembly, the shell body is provided with a containing cavity, the stator assembly is arranged in the containing cavity, the stator assembly comprises two stator end faces and a connecting face, the two stator end faces are oppositely arranged in the length direction of the stator assembly, and the connecting face is arranged between the two stator end faces. An oil inlet is formed in the outer side of the shell body, an oil groove is formed in the inner side face, facing the stator assembly, of the shell body, the oil groove is communicated with the oil inlet, the oil groove surrounds the stator assembly, the shell body is provided with a plurality of first branch oil ways communicated with the oil groove, and the first branch oil ways are arranged in the length direction of the stator assembly; the two ends of the first branch oil way are provided with oil nozzles facing the end face of the stator respectively. According to the shell assembly provided by the technical scheme, the oil way system is integrated in the shell body, a cooling oil pipe does not need to be additionally arranged, the size of the motor is further reduced, and the overall integration degree of the motor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a housing assembly and a high-speed motor. Background Art

[0002] High-speed motors for vehicles are the core components of the power system of new energy vehicles. They have the advantages of small size, high efficiency, high power factor, high reliability and easy maintenance. They are usually directly connected to high-speed loads, eliminating the traditional mechanical speed increase device, reducing system noise and improving system transmission efficiency. The main features of high-speed motors for vehicles include high rotor speed, high stator winding current and magnetic flux frequency in the core, as well as high power density and loss density.

[0003] However, due to the high power and high speed characteristics of motors, the temperature rise challenge is becoming increasingly severe. Therefore, a more efficient cooling system is urgently needed to promptly remove the heat generated by the motor during operation. Otherwise, the motor temperature will easily rise too high, which will at least affect the performance, and at worst lead to consequences such as winding burning and bearing damage, seriously affecting the service life of the motor.

[0004] In the relevant technology, most of the high-speed drive motors used in electric vehicles adopt water cooling solutions, and the motor power is generally low. Due to the water cooling structure, the motor volume is large. Continuing to use water cooling solutions to develop high-power motors will further increase the motor volume and cannot meet the space requirements of the whole vehicle. Due to the market demand for high-power motors and the limitation of vehicle installation space, a high-power and small-volume motor is needed to meet the demand, and oil-cooled motors can adapt to this demand well. The cooling oil can fully contact with the motor heat source for heat exchange, further reduce the motor temperature to expand the motor output power, and remove the complex water cooling structure to further reduce the motor volume. However, the current oil-cooled motor housing assembly structure is complex, the structure processing tool is difficult, and the cost is relatively high. Summary of the invention

[0005] The main purpose of the present invention is to provide a housing assembly and a high-speed motor, aiming to further simplify the structure of the oil-cooled motor housing assembly, reduce the size of the motor and thus improve the overall integration of the motor.

[0006] To achieve the above object, the housing assembly proposed by the present invention includes:

[0007] a shell body having a receiving cavity; and

[0008] A stator assembly, the stator assembly is arranged in the accommodating cavity, the stator assembly comprises two stator end surfaces and a connecting surface, the two stator end surfaces are arranged opposite to each other along the length direction of the stator assembly, and the connecting surface connects the two stator end surfaces;

[0009] An oil inlet is provided on the outer side of the shell body, an oil groove is provided on the inner side of the shell body facing the stator assembly, the oil groove is connected to the oil inlet, the oil groove surrounds the stator assembly, the shell body is provided with a plurality of first branch oil passages connected to the oil grooves, the first branch oil passages are arranged along the length direction of the stator assembly, and oil nozzles facing the stator end surface are respectively provided at both ends of the first branch oil passage.

[0010] In one embodiment, a plurality of oil guide members are provided at both ends of the shell body, and the oil guide members are provided with oil guide slopes facing the stator end surfaces, the oil guide slopes are inclined downward, and the oil nozzles are provided on the oil guide members and are perpendicular to the oil guide slopes.

[0011] In one embodiment, the oil injection nozzle gradually shrinks from the first branch oil passage toward the oil guide slope.

[0012] In one embodiment, a plurality of the oil guide members are disposed on the ring side of the stator assembly and are evenly spaced apart.

[0013] In one embodiment, the shell body is provided with a plurality of oil grooves, the plurality of oil grooves are arranged in parallel and at intervals, and every two adjacent oil grooves are connected;

[0014] Each of the oil grooves is communicated with the outer peripheral wall of the stator assembly.

[0015] In one embodiment, the shell body is provided with an oil groove, and the oil groove is spirally arranged on the inner circumferential wall of the shell body.

[0016] In one embodiment, the housing assembly further includes an end cover, which is connected to the end of the shell body, and the inner wall of the end cover is provided with a plurality of second branch oil passages, each of which is connected to the first branch oil passage.

[0017] In one embodiment, the oil guide member and the shell body are integrally formed, and the first branch oil path runs through the oil guide member.

[0018] In one embodiment, an inner peripheral wall of the shell body is provided with an annular limiting protrusion, and the annular limiting protrusion is clamped and fixed to the stator assembly.

[0019] The present invention further provides a high-speed motor, which includes the above-mentioned housing assembly and a rotor assembly, wherein the stator assembly is provided with a receiving cavity, and the rotor assembly is arranged in the receiving cavity, and the housing assembly includes:

[0020] a shell body having a receiving cavity; and

[0021] A stator assembly, the stator assembly is arranged in the accommodating cavity, the stator assembly comprises two stator end surfaces and a connecting surface, the two stator end surfaces are arranged opposite to each other along the length direction of the stator assembly, and the connecting surface connects the two stator end surfaces;

[0022] An oil inlet is provided on the outer side of the shell body, an oil groove is provided on the inner side of the shell body facing the stator assembly, the oil groove is connected to the oil inlet, the oil groove surrounds the stator assembly, the shell body is provided with a plurality of first branch oil passages connected to the oil grooves, the first branch oil passages are arranged along the length direction of the stator assembly, and oil nozzles facing the stator end surface are respectively provided at both ends of the first branch oil passage.

[0023] The technical solution of the present invention proposes a shell assembly and a high-speed motor, wherein the shell assembly includes a shell body and a stator assembly arranged in a housing cavity of the shell body, and the shell body has a built-in cooling oil circuit. Specifically, an oil groove is provided on the inner side of the shell body facing the stator assembly, and the oil groove is arranged around the stator assembly. A plurality of first branch oil circuits connected to the oil grooves are also provided on the inner side of the shell body, and the first branch oil circuits are all arranged along the length direction of the stator assembly. Oil spray nozzles are respectively provided at both ends of the first branch oil circuit, and the plurality of oil spray nozzles all face the stator end face. An oil inlet connected to the interior is also provided on the outer side of the shell. Cooling oil enters the oil groove from the oil inlet, and then enters the first branch oil circuit from the oil groove, and is sprayed from the oil spray nozzle through the first branch oil circuit. The sprayed cooling oil quickly adheres to the stator end face, thereby producing a better cooling effect on the most seriously heated part of the stator assembly, that is, the stator end face. The shell assembly proposed in this case integrates the oil circuit system in the shell body, and there is no need to additionally set up cooling oil pipes, which further reduces the size of the motor and improves the overall integration of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of an embodiment of a housing assembly provided by the present invention;

[0026] Figure 2 A schematic diagram of the exploded structure of the housing assembly provided by the present invention;

[0027] Figure 3 is a cross-sectional view of the housing assembly;

[0028] Figure 4 for Figure 3A is a schematic structural diagram of the first embodiment;

[0029] Figure 5 for Figure 3 A is a schematic structural diagram of the second embodiment;

[0030] Figure 6 is a cross-sectional view of the housing assembly at another angle;

[0031] Figure 7 It is a schematic diagram of the structure of the oil groove inside the shell body in the first embodiment;

[0032] Figure 8 This is a schematic diagram of the structure of the oil groove inside the shell body in the second embodiment;

[0033] Fig. 9 It is a schematic structural diagram of the internal oil groove of the shell body in the third embodiment.

[0034] Description of Figure Numbers:

[0035] 100. Shell assembly; 1. Shell body; 11. Oil guide; 12. Oil inlet; 13. Oil tank; 14. First branch oil circuit; 15. Oil injection nozzle; 1a. Accommodating cavity; 2. Stator assembly; 21. Stator end face; 22. Connecting surface; 2a. Accommodating cavity; 3. End cover; 31. Second branch oil circuit.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] The present invention proposes a housing assembly, which aims to further simplify the structure of the oil-cooled motor housing assembly, reduce the size of the motor and thus improve the overall integration of the motor. Figures 1 to 9 A schematic structural diagram of an embodiment of a housing assembly provided by the present invention.

[0041] Please refer to Figures 1 to 9 The present invention proposes a shell assembly 100, including a shell body 1 and a stator assembly 2, the shell body 1 has an accommodating cavity 1a, the stator assembly 2 is arranged in the accommodating cavity 1a, the stator assembly 2 includes two stator end faces 21 and a connecting surface 22, the two stator end faces 21 are arranged opposite to each other along the length direction of the stator assembly 2, the connecting surface 22 connects the two stator end faces 21, an oil inlet 12 is provided on the outer side of the shell body 1, an oil groove 13 is provided on the inner side of the shell body 1 facing the stator assembly 2, the oil groove 13 is connected to the oil inlet 12, the oil groove 13 surrounds the stator assembly 2, the shell body 1 is provided with a plurality of first branch oil passages 14 connected to the oil grooves 13, the first branch oil passages 14 are arranged along the length direction of the stator assembly 2, and oil nozzles 15 facing the stator end faces 21 are provided at both ends of the first branch oil passage 14.

[0042] A housing assembly 100 proposed below is applied to a high-speed motor, which can be used as a driving part of any vehicle. For example, the high-speed motor can be applied to a hybrid vehicle; for example, the high-speed motor can be applied to a pure electric vehicle. The vehicle using this high-speed motor has good power performance while also having the advantages of motor miniaturization, lightness and high integration, so that the volume and weight of the motor are well optimized. Furthermore, the housing assembly 100 can provide a better cooling effect for the high-speed motor, reduce the temperature difference inside the motor, improve thermal stability, extend the service life of the motor, and maintain efficient operation of the motor under high load conditions. At the same time, it enhances the adaptability of the motor to high temperature environments, reduces maintenance costs, and improves overall safety, ensuring the reliability of the motor under various operating conditions, that is, in different modes.

[0043] The technical solution of the present invention proposes a housing assembly 100 and a high-speed motor, wherein the housing assembly 100 includes a housing body 1 and a stator assembly 2 arranged in an accommodating cavity 1a of the housing body 1, and the housing body 1 has a built-in cooling oil circuit. Specifically, an oil groove 13 is provided on the inner side of the housing body 1 facing the stator assembly 2, and the oil groove 13 is arranged around the stator assembly 2. A plurality of first branch oil circuits 14 connected to the oil grooves 13 are also provided on the inner side of the housing body 1. The first branch oil circuits 14 are all arranged along the length direction of the stator assembly 2. Oil nozzles 15 are respectively provided at both ends of the first branch oil circuit 14, and the plurality of oil nozzles 15 face The stator end face 21, the outer side of the shell is also provided with an oil inlet 12 connected to the interior, the cooling oil enters the oil tank 13 from the oil inlet 12, and then enters the first branch oil circuit 14 from the oil tank 13, and is sprayed from the oil nozzle 15 through the first branch oil circuit 14. The sprayed cooling oil quickly adheres to the stator end face 21, thereby producing a better cooling effect on the most seriously heated part of the stator assembly 2, that is, the stator end face 21. The shell assembly 100 proposed in this case integrates the oil circuit system in the shell body 1, and there is no need to set up an additional cooling oil pipe, which further reduces the size of the motor and improves the overall integration of the motor.

[0044] In one embodiment of the present invention, the stator assembly 2 is provided in the accommodation cavity 1a inside the shell body 1 through interference fit, and the oil groove 13 provided on the inner peripheral wall of the shell body has its opening facing the outer peripheral wall of the stator assembly 2. The cooling oil flowing in the oil groove 13 contacts the connection surface 22 of the stator assembly 2, and can also take away some heat from the middle part of the stator assembly 2. The cooling oil entering the oil groove 13 through the oil inlet 12 will enter the multiple first branch oil paths 14 provided along the length direction of the stator assembly 2 through the oil groove 13. In this embodiment, the oil groove 13 is arranged in the middle position of the inner peripheral wall of the shell body 1. For details, please refer to Figure 7, each first branch oil circuit 14 is connected to and passes through the oil groove 13 in the middle. Since multiple first branch oil circuits 14 are provided, multiple first branch oil circuits 14 enclose a heat dissipation space, that is, the inside of the accommodating cavity 1a. The cooling oil flowing in multiple first branch oil circuits 14 can also have a good cooling effect on the connecting surface 22 of the stator assembly 2. It should be noted that the present invention does not limit the setting mode of the first branch oil circuit 14. It can be a direct flow type, that is, it is arranged parallel to the length direction of the stator assembly 2; it can also be an oblique flow type, that is, it is at a certain angle to the length direction of the stator assembly 2, and the whole is more similar to the outer tooth root of the helical gear. In one embodiment of the present invention, there are ten first branch oil circuits 14, which are evenly spaced and arranged in a ring on the inner peripheral wall of the shell body 1, that is, each first branch oil circuit 14 is 36° apart. Such a design can increase the injection amount while ensuring the high structural strength of the shell body 1, thereby optimizing the cooling effect.

[0045] In the actual use of high-speed motors, the heat generation at the two end surfaces of the stator assembly 2 is the most serious, which is mainly due to the increased losses caused by high speed, eddy current losses caused by leakage magnetic flux, insufficient cooling effect, structural asymmetry, and factors such as materials and manufacturing processes. During high-speed rotation, due to the relatively poor heat dissipation conditions, it is difficult for the cooling medium to effectively contact the heating parts, resulting in difficulty in dissipating heat. In addition, the asymmetric structure of the stator end face 21 and the material selection and manufacturing defects under load or operating conditions may also cause heat concentration. In this embodiment, in order to better guide the cooling oil output from the first branch oil circuit 14 to the stator end face 21 and thus cool the stator end face 21, a plurality of oil guides 11 are provided at both ends of the shell body 1. For details, please refer to further. Figure 1 and Figure 2 The oil guide member 11 is provided with an oil guide slope facing the stator end face 21, and the oil guide slope is inclined toward the stator end face 21. The purpose is to enable the oil spray nozzle 15 inside the oil guide member 11 to be directly facing the stator end face 21 so as to better spray the cooling oil to the stator end face 21. Therefore, the oil spray nozzle 15 is arranged perpendicular to the oil guide slope.

[0046] It should be noted that the fuel injector 15 can be a direct injection type, that is, the inner pipe section of the fuel injector 15 is a straight pipe connected to the first branch oil path 14; the fuel injector 15 can also be a compression injection type, that is, the inner pipe section of the fuel injector 15 is a tapered type, and the present invention does not limit this. In the first embodiment, the fuel injector 15 is a direct injection type. For details, please refer to Figure 4, the inner tube section of this fuel injector 15 is a straight tube, which directly sprays the cooling oil in a straight path. The advantage of the direct injection type is that it can provide uniform and direct cooling oil distribution, which is suitable for occasions where the oil flow direction and coverage area need to be precisely controlled. In addition, since the oil flow path is simple and direct, it helps to reduce the risk of system blockage and can quickly respond to cooling needs. In the second embodiment, the fuel injector 15 adopts a tapered nozzle. The inner tube section of this fuel injector 15 is tapered. The cooling oil flow is sprayed after passing through the compression section, which helps to form smaller oil droplets, thereby increasing the ratio of the surface area of ​​the cooling oil to the heat exchange area. The advantage of the compression injection type is that it can improve the atomization effect of the cooling oil, increase the contact area with the heat source of the stator end face 21, and thus improve the cooling efficiency. In addition, the compression injection type fuel injector 15 can usually produce a higher injection pressure, which helps to achieve effective cooling and cooling of the end of the stator assembly 2 in a high-speed motor. The direct injection nozzle 15 is characterized by its uniform oil distribution and direct injection path. It is suitable for occasions that require precise control of the oil flow direction. At the same time, due to its simple structural design, it reduces the difficulty of maintenance and the risk of system blockage. The compression injection nozzle 15 improves the atomization effect and heat exchange efficiency of the cooling oil through the tapered inner pipe section design. It is particularly suitable for high-efficiency cooling needs and can generate higher injection pressure to meet high-pressure applications. The design of these two types of nozzles 15 enables the cooling system to be optimized according to different operating conditions and performance requirements, ensuring that the motor can maintain good thermal stability and long life under various operating conditions.

[0047] In the above embodiments, the multiple oil guides 11 provided at the end of the shell body 1 can only spray and cool down a part of the stator end face 21 of the stator assembly 2. In order to further expand the cooling space, the inner wall of the end cover 3 of the shell assembly 100 is provided with a second branch oil circuit 31 connected to the first branch oil circuit 14. Each second branch oil circuit 31 is correspondingly connected to a first branch oil circuit 14. The inner diameter of the second branch oil circuit 31 is unified with the first branch oil circuit 14, so that the cooling oil can smoothly enter the second branch oil circuit 31 to cover a larger cooling range of the stator end face 21, and finally flow back from the second branch oil circuit 31 to the oil pan (not marked in the figure). It should be noted that the oil guide member 11 can be disposed at the end of the shell in a detachable connection manner, or can be formed together with the shell body 1 in an integral molding manner. The present invention does not limit this. In one embodiment of the present invention, the oil guide member 11 and the shell body 1 are an integrally molded structure. The oil guide member 11 and the shell body 1 structure manufactured using the integral molding technology not only improves the overall connection strength and stability, but also reduces the assembly process and potential leakage risks. This design simplifies the production process, reduces costs, and improves the reliability and durability of the equipment due to the reduction of connection points. At the same time, the integrally molded parts are more convenient and quick to maintain and replace, which helps to improve the economy and maintenance efficiency of the product.

[0048] In one embodiment of the present invention, the shell body 1 is provided with a plurality of oil grooves 13. For details, please refer to Figure 8 The present invention does not limit the number of oil grooves 13. In this embodiment, three oil grooves 13 are provided. The three oil grooves 13 are provided in parallel and spaced apart on the inner wall of the shell body 1 along the length direction of the stator assembly 2. By providing a plurality of oil grooves 13, the contact area between the oil circuit and the connecting surface 22 of the stator assembly 2 can be further increased, thereby improving the cooling efficiency.

[0049] In another embodiment of the present invention, the shell body 1 is provided with an oil groove 13, which is spirally arranged along the length direction of the stator assembly 2. For details, please refer to Fig. 9 Accordingly, the position of the oil inlet 12 can be adjusted to be close to the end of the shell body 1, so that the cooling oil can circulate in the oil groove 13. Designing the oil groove 13 to be threaded can also increase the heat exchange area of ​​the connection surface 22 between the cooling oil in the oil groove 13 and the stator assembly 2, thereby improving the heat dissipation efficiency. The use of the spiral oil groove 13 design can increase the heat exchange area of ​​the cooling oil in contact with the stator assembly 2, thereby improving the heat dissipation efficiency. This design not only increases the flow path of the cooling oil, but also improves the efficiency of heat transfer by increasing the surface area in contact with the stator assembly 2. In addition, the spiral oil groove 13 helps to form a continuous and uniform oil film, ensuring that the cooling oil can more effectively absorb and take away the heat generated inside the motor. This design is crucial to maintaining the stable operation of the motor under high load conditions, and helps to extend the service life of the motor and improve its reliability.

[0050] It can be understood that in this case, the cooling oil enters the oil inlet 12, and the cooling oil enters the first branch oil circuit 14 and the second branch oil circuit 31 in turn through the oil tank 13, and then flows back to the oil pan, and circulates and cools in the housing assembly 100. The heat generated by the high-speed operation of the stator assembly 2 is taken away by the uninterrupted flow of the cooling oil. It should be noted that the oil inlet 12 can be set along the tangent direction of the outer wall of the housing, or can be set in the direction pointing to the axis. This scheme does not limit this. In one embodiment of the present invention, the oil inlet 12 is set along the tangent direction of the outer wall of the housing. The design of setting the oil inlet 12 along the tangent direction of the outer wall of the housing helps to optimize the flow path of the cooling oil, reduce flow resistance, and achieve a more uniform and efficient cooling effect. This layout can reduce pressure loss, avoid local overheating, and reduce noise and vibration caused by turbulence, thereby improving the operating stability of the motor. In addition, this design also simplifies the maintenance of the cooling system, which helps to improve the reliability and service life of the entire motor.

[0051] In order to install and fix the stator assembly 2, the inner wall of the shell body 1 is provided with an annular limiting protrusion, which abuts against one end of the stator assembly 2 to achieve limiting and installation, thereby optimizing the connection structure between the shell body 1 and the stator assembly 2 and improving the structural reliability.

[0052] The present invention further proposes a high-speed motor, which includes a housing assembly 100 and a rotor assembly. The stator assembly 2 is provided with a receiving cavity 2a, and the rotor assembly is arranged in the receiving cavity 2a. The specific structure of the housing assembly 100 refers to the above embodiment. Since the high-speed motor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0053] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A housing assembly, characterized in that: include: a shell body having a receiving cavity; and A stator assembly, the stator assembly is arranged in the accommodating cavity, the stator assembly comprises two stator end surfaces and a connecting surface, the two stator end surfaces are arranged opposite to each other along the length direction of the stator assembly, and the connecting surface connects the two stator end surfaces; An oil inlet is provided on the outer side of the shell body, an oil groove is provided on the inner side of the shell body facing the stator assembly, the oil groove is connected to the oil inlet, the oil groove surrounds the stator assembly, the shell body is provided with a plurality of first branch oil passages connected to the oil grooves, the first branch oil passages are arranged along the length direction of the stator assembly, and oil nozzles facing the stator end surface are respectively provided at both ends of the first branch oil passage.

2. The housing assembly according to claim 1, characterized in that: Both ends of the shell body are provided with a plurality of oil guide members, and the oil guide members are provided with oil guide slopes facing the stator end surfaces, and the oil guide slopes are arranged slanting downward, and the oil nozzles are arranged on the oil guide members and perpendicular to the oil guide slopes.

3. The housing assembly according to claim 2, characterized in that: The oil injection nozzle gradually shrinks from the first branch oil passage toward the oil guide slope.

4. The housing assembly according to claim 1, characterized in that: A plurality of the oil guide members are arranged on the ring side of the stator assembly and are evenly spaced.

5. The housing assembly according to any one of claims 1 to 4, characterized in that: The shell body is provided with a plurality of oil grooves, the plurality of oil grooves are arranged in parallel and at intervals, and every two adjacent oil grooves are connected; Each of the oil grooves is communicated with the outer peripheral wall of the stator assembly.

6. The housing assembly according to any one of claims 1 to 4, characterized in that: The shell body is provided with an oil groove, and the oil groove is spirally arranged on the inner peripheral wall of the shell body.

7. The housing assembly according to any one of claims 1 to 4, characterized in that: The housing assembly further includes an end cover connected to the end of the housing body. The inner wall of the end cover is provided with a plurality of second branch oil passages, each of which is connected to the first branch oil passage.

8. The housing assembly according to claim 2, characterized in that: The oil guide member is integrally formed with the shell body, and the first branch oil path runs through the oil guide member.

9. The housing assembly according to any one of claims 1 to 4, characterized in that: An annular limiting protrusion is provided on the inner peripheral wall of the shell body, and the annular limiting protrusion is clamped and fixed with the stator assembly.

10. A high-speed motor, characterized in that: It comprises a housing assembly and a rotor assembly as described in any one of claims 1 to 9, wherein the stator assembly is provided with a receiving cavity, and the rotor assembly is arranged in the receiving cavity.

Images