CN221552933U - Motor with a motor housing - Google Patents

Abstract

The application relates to the field of new energy automobiles, and particularly discloses a motor, which comprises a shell, a rotating shaft, a stator assembly, a rotor assembly and a nozzle; the rotating shaft penetrates through the shell; the stator component is arranged in the shell and sleeved on the rotating shaft; the rotor component is arranged in the shell and fixedly sleeved on the rotating shaft, at least one through hole is formed in the rotor component along the axial direction of the rotating shaft, and the through holes are communicated with two opposite sides of the rotor component along the axial direction of the rotating shaft; the nozzle is arranged in the shell, and the spraying direction of the nozzle faces the rotor assembly; the nozzle is used for receiving the cooling liquid and spraying the cooling liquid to the rotor assembly for cooling. According to the motor, through holes are formed in the rotor assembly, so that pressure balance between the rotor assembly and the stator assembly and between the rotor and the end cover after rotation can be achieved, and an axial vibration source caused by pressure difference during rotation is reduced. The cooling liquid is sprayed to the rotor assembly by the nozzle, heat in the rotor assembly is conducted out through the through hole, heat discharge is achieved, and heat dissipation efficiency is improved.

Description

Motor with a motor housing

Technical Field

The utility model relates to the field of new energy automobiles, in particular to a motor.

Background

In order to cope with the ever-increasing fuel price and the variable international petroleum form, the use of new energy sources, such as electric energy, hydrogen energy and the like, is greatly promoted in China. The new energy automobile develops most rapidly, and the final drive automobile drives a motor regardless of electric energy or hydrogen energy. Compared with the internal combustion engine used by the traditional automobile, the new energy automobile has higher requirements on the motor used by the new energy automobile.

However, the existing new energy motor mainly adopts a radial magnetic flux structure, has heavy weight, large volume, lower power density and torque density compared with an axial magnetic flux motor, and is contradictory with light weight and larger riding space of the whole vehicle. At present, the axial flux motor mainly has the problems of difficult heat dissipation of a rotor assembly and unequal pressure at two sides of a high-speed rotating disc structure, so that the axial flux motor cannot be widely applied to passenger vehicles.

Disclosure of utility model

The application provides a motor, which is characterized in that a through hole is arranged on a rotor assembly, so that a nozzle receives cooling liquid and sprays the cooling liquid to the rotor assembly for cooling, thereby effectively solving the problems and being beneficial to popularization of wide and economic application of an axial flux motor on a passenger car.

In order to solve the technical problems, the application adopts a technical scheme that: providing a motor comprising a housing, a shaft, a stator assembly, a rotor assembly, and a nozzle; the rotating shaft penetrates through the shell; the stator component is arranged in the shell and sleeved on the rotating shaft; the rotor component is arranged in the shell and fixedly sleeved on the rotating shaft, at least one through hole is formed in the rotor component along the axial direction of the rotating shaft, and the through holes are communicated with two opposite sides of the rotor component along the axial direction of the rotating shaft; the nozzle is arranged in the shell, and the spraying direction of the nozzle faces the rotor assembly; the nozzle is used for receiving the cooling liquid and spraying the cooling liquid to the rotor assembly for cooling.

Wherein the number of rotor assemblies is at least one; the number of nozzles is at least one, and each rotor assembly has at least one nozzle for injecting a cooling fluid thereto.

The rotor assembly comprises a rotor iron core and a plurality of magnetic steel blocks which are annularly arranged, the rotor iron core is sleeved on the rotating shaft, a plurality of accommodating grooves are formed in the rotating shaft at intervals, and the magnetic steel blocks are fixedly embedded in the accommodating grooves in a one-to-one correspondence manner; the through holes are formed in the rotor core and/or the magnetic steel blocks.

Wherein the rotor assembly comprises a thermal firmware; the inner ring of the rotor core is provided with a weight removing ring, the rotor core is sleeved on the weight removing ring, and the weight removing ring is sleeved on the rotating shaft; the heat firmware is filled and solidified at the joint of the de-duplication ring, the magnetic steel block and the rotor core in a thermosetting mode so as to fix the rotor core, the magnetic steel block and the de-duplication ring.

And a cooling air passage is arranged between the heat firmware and the magnetic steel block and between the heat firmware and the rotor core, the cooling air passage is communicated with the through hole and the outside, and the cooling air passage receives air flow from the through hole and leads the air flow to the outside.

The nozzle is arranged on the stator assembly and is positioned on at least one side of the stator assembly facing the rotor assembly.

The nozzle is arranged on the top wall of the shell in the height direction of the motor in a use and placement state.

The shell comprises an end cover which is arranged opposite to the rotor component along the axial direction of the rotating shaft, and the nozzle is arranged on the end cover or is arranged between the end cover and the rotor component and is fixed relative to the end cover.

The number of the nozzles is a plurality, and the nozzles are arranged at intervals.

The stator assembly is provided with a cooling channel, the cooling channel is communicated with the nozzle, and the cooling channel is used for receiving cooling liquid and conveying the cooling liquid to the nozzle.

The application has the beneficial effects that: compared with the prior art, the motor provided by the application has the advantages that through holes are formed in the rotor assembly, so that the pressure balance between the rotor assembly and the stator assembly and between the rotor and the end cover after rotation can be realized, and the axial vibration source caused by pressure difference during rotation is reduced. Simultaneously, make the nozzle receive the coolant liquid to spout the rotor subassembly with the coolant liquid, the coolant liquid is through the heat conduction of through-hole with the inside rotor subassembly comes out, realizes the heat and discharges, reduces the thermal resistance, improves radiating efficiency, and then improves the stability and the reliability that the car was gone.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a motor according to the present application;

Fig. 2 is a schematic structural view of an embodiment of a rotor core according to the present application;

FIG. 3 is a schematic view of another embodiment of a motor according to the present application;

FIG. 4 is a schematic cross-sectional view of a structure B-B of the embodiment of FIG. 3 of the motor provided by the present application;

FIG. 5 is a schematic top view of an embodiment of a stator assembly according to the present application;

FIG. 6 is a schematic cross-sectional view of the structure A-A of the embodiment of FIG. 3 of the stator assembly provided by the present application;

FIG. 7 is a schematic exploded view of the stator assembly of the embodiment of FIG. 3 in accordance with the present application;

FIG. 8 is a schematic structural view of another embodiment of a stator assembly provided by the present application;

FIG. 9 is a schematic view of a stator assembly according to another embodiment of the present application;

fig. 10 is a schematic structural view of an embodiment of a cured member according to the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms "first," "second," and "first," herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "several," "a plurality" means at least two, such as two, three, etc., unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Please refer to fig. 1-4 in combination. The present application provides an electric motor 100, the electric motor 100 comprising a housing 1, a shaft 2, a rotor assembly 3, a stator assembly 4 and a nozzle 6. The rotating shaft 2 penetrates through the shell 1; the stator assembly 4 is arranged in the shell 1 and sleeved on the rotating shaft 2. The rotor assembly 3 is arranged in the shell 1 and fixedly sleeved on the rotating shaft 2, at least one through hole 31 is formed in the rotor assembly 3 along the axial direction of the rotating shaft 2, and the through holes 31 are communicated with two opposite sides of the rotor assembly 3 along the axial direction of the rotating shaft 2; the nozzle 6 is arranged in the shell 1, and the spraying direction of the nozzle 6 faces the rotor assembly 3; the nozzle 6 is adapted to receive the cooling liquid and to spray the cooling liquid towards the rotor assembly 3 for cooling.

Specifically, the rotor assembly 3 is provided with a plurality of through holes 31 along the axial direction of the rotating shaft 2, and the through holes 31 are communicated with two opposite sides of the rotor assembly 3 along the axial direction of the rotating shaft 2. When the rotor assembly 3 rotates at a high speed, the through holes 31 can drive airflow to flow, so that the pressure between the rotor assembly 3 and the stator assembly 4 after rotation and the pressure between the rotor assembly 3 and the end cover 11 are balanced, and further, the axial vibration source caused by the pressure difference between two sides of the shell 1 along the axial direction is reduced. In another embodiment, the rotor assembly 3 may also be provided with a through hole 31 along the axial direction of the rotating shaft 2, so as to balance pressure and improve heat dissipation effect.

Further, the spraying direction of the nozzle 6 faces the rotor assembly 3, so that the cooling liquid can be sprayed to the rotor assembly 3, and then the cooling liquid can penetrate through the rotor assembly 3 through the plurality of through holes 31, heat inside the rotor assembly 3 is conducted out, heat is discharged, the rotor assembly 3 is cooled, the heat resistance of the rotor assembly is reduced, and the heat dissipation efficiency is improved.

In one embodiment of the present application, the number of rotor assemblies 3 is at least one; the number of nozzles 6 is at least one, and each rotor assembly 3 has at least one nozzle 6 for injecting a cooling liquid thereto.

In a specific embodiment, the number of the rotor assemblies 3 is two, the two rotor assemblies 3 are opposite and spaced along the axial direction of the rotating shaft 2, the stator assembly 4 is disposed between the two rotor assemblies 3 along the axial direction of the rotating shaft 2, and the air flow can be driven to flow through the through holes 31, so that the pressure between the rotor assemblies 3 and the stator assemblies 4 and the pressure balance between the rotor assemblies 3 and the end cover 11 after rotation are realized. The number of the nozzles 6 is two, the two nozzles 6 are respectively arranged on two sides of the axial direction of the stator assembly 4 and respectively face the two rotor assemblies 3 correspondingly, each side is provided with a nozzle 6 for spraying cooling liquid to the rotor assemblies 3, the cooling liquid is thrown away and dispersed on the surfaces of the rotor assemblies 3 by utilizing centrifugal force, and the purpose of fully and uniformly cooling the rotor assemblies 3 is achieved.

Specifically, the motor 100 includes two rotor assemblies 3, which are disposed on opposite sides of the stator assembly 4 along the axial direction of the stator assembly 4, so as to achieve the effects of balancing heat dissipation, improving the efficiency of the motor 100, reducing electromagnetic interference, enhancing structural strength, facilitating maintenance and repair, and the like.

In another embodiment, the rotor assembly 3 may also be provided with one, by providing a nozzle 6 or a plurality of nozzles 6 for injecting a cooling liquid thereto. In other embodiments, three or more rotor assemblies 3 may be provided, each rotor assembly 3 having a nozzle 6 or a plurality of nozzles 6 for injecting a cooling fluid thereto.

In an embodiment of the present application, the rotor assembly 3 further includes a rotor core 32 and a plurality of magnetic steel blocks 33 that are annularly disposed, the rotor core 32 is sleeved on the rotating shaft 2, and a plurality of accommodating grooves are spaced apart around the rotating shaft 2. Specifically, the rotor core 32 may be formed by punching, and receiving grooves for fixing the magnetic steel blocks 33 may be punched on the core, and the receiving grooves may include shallow grooves and through holes 31. The magnetic steel blocks 33 are fixedly embedded in the accommodating grooves in a one-to-one correspondence manner, and positioning can be realized through riveting or small interference. The through holes 31 may be opened in the rotor core 32 so as to penetrate the rotor core 32; the cooling liquid can be arranged on the surfaces of the rotor iron core 32 or the magnetic steel blocks 33 through the through holes 31 to cool and dissipate heat so as to realize the purpose of sufficiently and uniformly cooling the rotor assembly 3.

In a specific embodiment, the nozzles 6 may be disposed at inner ring positions at two sides of the stator assembly 4 to spray the cooling liquid onto the surface of the magnetic steel block 33, so that the uniform heat dissipation on the surface of the magnetic steel block 33 is achieved by using the centrifugal force of the rotation of the rotor assembly 3, thereby achieving the sufficiently uniform cooling of the rotor assembly 3. In another embodiment, the nozzle 6 may be disposed on the shaft of the motor 100 to spray the cooling liquid onto the surface of the magnetic steel block 33, and achieve uniform heat dissipation by using centrifugal force. In another embodiment, the nozzle 6 may be disposed on the top wall of the housing 1 in the height direction of the motor 100 in the in-use state, and use gravity to achieve uniform heat dissipation to the surface of the rotor magnet steel block 33. In other embodiments, a plurality of nozzles 6 may be provided, the plurality of nozzles 6 being disposed at intervals from each other, and uniform heat dissipation to the surface of the magnetic steel block 33 is achieved by the plurality of nozzles 6.

In an embodiment of the present application, the housing 1 includes end caps 11 disposed opposite to the rotor assembly 3 along the axial direction of the rotating shaft 2, and the end caps 11 may protect both sides of the housing 1 along the axial direction. The nozzle 6 may be disposed on the end cover 11, or may be disposed between the end cover 11 and the rotor assembly 3 and fixed relative to the end cover 11, so as to implement jet cooling of the rotor core 32 and indirectly cool the magnetic steel.

In one embodiment of the application, the rotor assembly 3 includes a thermal fastener 34 for filling the stationary rotor assembly 3. The inner ring of the rotor core 32 is provided with the weight removing ring 35, the rotor core 32 is sleeved on the weight removing ring 35, and the weight removing ring 35 is sleeved on the rotating shaft 2, so that unbalance in the rotating process can be reduced, and the stability is improved. The heat-fixing piece 34 is filled and solidified at the joint of the de-weight ring 35, the magnetic steel block 33 and the rotor core 32 in a thermosetting manner to fix the rotor core 32, the magnetic steel block 33 and the de-weight ring 35. The performance material of the thermal firmware 34 is similar to that of the cured member 41 of the above embodiment, and redundant description thereof is omitted.

Specifically, a cooling air duct (not shown) is provided between the heat-setting member 34 and the magnet steel block 33 and the rotor core 32, the cooling air duct communicating the through-hole 31 with the outside, the cooling air duct receiving an air flow from the through-hole 31 and leading the air flow to the outside. On the one hand, the cooling air passage can directly cool the magnetic steel block 33 through the cold air entering from the outside; on the other hand, the cooling channel can absorb the heat of the magnetic steel block 33 through the cooling liquid, gasify and lead to the outside to cool the magnetic steel block 33, namely, the circulating cold and hot air flow is generated, the heat dissipation effect and the heat dissipation efficiency are improved, and the full and uniform cooling is realized.

In an embodiment of the present application, an air gap is disposed between the stator assembly 4 and the rotor assembly 3, and under the condition of determining the electromagnetic performance design, the air gap can be reduced by using a thermosetting filling material, so that a better heat dissipation effect can be achieved, and the performance of the motor 100 is not affected.

In an embodiment of the present application, the motor 100 further includes a bearing 5, which is disposed on the inner ring of the stator assembly 4 and connected to the rotating shaft 2, so as to bear the vibration of the rotating shaft 2, reduce friction, and improve stability.

Please refer to fig. 1 and fig. 5-8. In one embodiment of the present application, stator assembly 4 includes a solidified member 41, a plurality of stator cores 42, a plurality of bobbins 43, and a plurality of coils 44. Specifically, the curing member 41 is formed by filling thermosetting plastic in the housing 1 and curing, and the curing member 41 is fixedly connected with the housing 1, so that the stator assembly 4 is tightly connected with the housing 1, the stability of the connection between the stator assembly 4 and the housing 1 can be improved, the process is simplified, and the assembly efficiency is improved. The plurality of bobbins 43 are arranged at intervals along the circumferential direction of the rotating shaft 2, the plurality of stator cores 42 are embedded in the plurality of bobbins 43 in a one-to-one correspondence manner, and the plurality of coils 44 are wound on the outer circumferential surfaces of the plurality of bobbins 43 in a one-to-one correspondence manner. The curing member 41 covers the plurality of bobbins 43 and the plurality of coils 44 to fix the plurality of bobbins 43 and the plurality of coils 44, and assembly efficiency and accuracy of the stator assembly 4 can be improved.

Specifically, the outer peripheral surface of each skeleton 43 is provided with a groove with an opening, the coil 44 is wound on the outer peripheral surface of the corresponding skeleton 43 along the groove, the opening of the groove is fixedly blocked under the coating of the solidified piece 41, the first cooling channel 45 is formed, the first cooling channel 45 is used for receiving the cooling liquid introduced from the outside of the stator assembly 4 to cool the corresponding coil 44, and the first cooling channel 45 is directly contacted with and cools the coil 44, so that the heat resistance can be reduced, the heat dissipation efficiency can be improved, and the purpose of fully cooling the coil 44 can be realized.

Specifically, the curing member 41 is configured to be formed by filling thermosetting plastic in the housing 1 and curing, so that the stator assembly 4 is tightly connected with the housing 1, the overall rigidity is improved, and the modal and NVH performance are further improved.

Specifically, the nozzle 6 is disposed on the solidifying member 41 and located on at least one side of the solidifying member 41 facing the rotor assembly 3, such that the nozzle 6 can receive the cooling liquid and spray the cooling liquid toward the rotor assembly 3 for cooling.

Further, in one embodiment, the curing member 41 includes an inner ring portion 411 and an outer ring portion 412 surrounding the rotating shaft 2, and the outer ring portion 412 and the inner ring portion 411 are coaxially disposed. The nozzle 6 may be provided at the inner ring portion 411 to directly spray the cooling liquid toward the rotor assembly 3 for cooling, thereby improving the cooling effect. In another embodiment, the nozzle 6 is disposed at the outer ring portion 412 and is located at the top of the outer ring portion 412 in the height direction of the motor 100 in the in-use placed state, so that gravity can be used to spray the rotor assembly 3, preventing leakage of the cooling liquid, and improving cooling uniformity.

Further, the solidifying member 41 is provided with a second cooling passage 46, a third cooling passage 47, and a fourth cooling passage (not shown). Wherein the fourth cooling channel communicates with the nozzle 6 for receiving the cooling liquid and delivering the cooling liquid to the nozzle 6.

Further, each first cooling channel 45 has a liquid inlet 451 and a liquid outlet 452, the liquid inlet 451 of each first cooling channel 45 is communicated with the second cooling channel 46 at intervals, the liquid outlet 452 of each first cooling channel 45 is communicated with the third cooling channel 47 at intervals, the second cooling channel 46 is used for receiving cooling liquid, the cooling liquid flows into the fourth cooling channel after sequentially flowing through the second cooling channel 46, the first cooling channel 45 and the third cooling channel 47, finally, the cooling liquid is conveyed to the nozzle 6 through the fourth cooling channel, and then, the cooling liquid is sprayed to the rotor assembly 3 through the nozzle 6 to cool the rotor assembly 3.

In an embodiment of the present application, unlike the above embodiment, the two sides of the solidifying piece 41 in the axial direction of the rotating shaft 2 face the two rotor assemblies 3 correspondingly, and each side is provided with at least one nozzle 6, so that the cooling liquid can be sprayed to the rotor assemblies 3, and the purpose of sufficiently and uniformly cooling the rotor assemblies 3 is achieved.

In an embodiment of the present application, a nozzle may be further disposed on the stator assembly 4, where the nozzle may include an opening at one end of the fourth cooling channel, and the cooling liquid is sprayed to the magnetic steel blocks 33 of the rotor assembly 3 through the nozzle, so as to further cool the magnetic steel blocks 33.

In an embodiment of the present application, the third cooling channel 47 and the second cooling channel 46 are reserved during filling and formed during solidification, and no additional auxiliary fixing structural members are required, so that the process can be simplified and the assembly efficiency can be improved.

In a specific embodiment, the structural member for clamping may be preset in the stator assembly 4, and the stator assembly 4 is filled with the curing member 41 and cured by heating, and then the structural member is taken out, and the remaining gaps respectively form the second cooling channel 46 and the third cooling channel 47, so that the coil 44 may be further cooled. In another embodiment, a meltable reserving member may be reserved in the stator assembly 4, after the solidifying member 41 is filled and heated, the solidifying member 41 is solidified and fixes the stator assembly 4, the reserving member is melted by heating, and the generated gaps form the second cooling channel 46 and the third cooling channel 47, respectively. In another embodiment, the second cooling channel 46 and the third cooling channel 47 may also be semi-open and sealed by external components. In other embodiments, the second cooling channel 46 and the third cooling channel 47 may also be formed in combination in the above manner.

Further, the curing member 41 is provided with a liquid inlet 461; the second cooling channel 46 is disposed in an open loop, and two ends of the second cooling channel 46 are both connected to the liquid inlet 461 for receiving the cooling liquid.

Specifically, the size of the liquid inlet 461 may be determined according to the inner diameter of the second cooling passage 46, and in a specific embodiment, the caliber of the liquid inlet 461 may be equal to the inner diameter of the second cooling passage 46, so as to achieve smooth cooling liquid delivery. In another embodiment, the caliber of the liquid inlet 461 may be larger than the inner diameter of the second cooling channel 46, so as to increase the conveying speed of the cooling liquid and improve or avoid the backflow of the cooling liquid.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.

Claims (10)

1. An electric machine, comprising:

a housing;

The rotating shaft penetrates through the shell;

The stator assembly is arranged in the shell and sleeved on the rotating shaft;

The rotor assembly is arranged in the shell and fixedly sleeved on the rotating shaft, at least one through hole is formed in the rotor assembly along the axial direction of the rotating shaft, and the through holes are communicated with two opposite sides of the rotor assembly along the axial direction of the rotating shaft;

A nozzle disposed within the housing, with a spray direction of the nozzle toward the rotor assembly; the nozzle is used for receiving the cooling liquid and spraying the cooling liquid to the rotor assembly for cooling.

2. The motor of claim 1, wherein the motor is configured to control the motor,

The number of the rotor components is at least one; the number of the nozzles is at least one, and at least one nozzle sprays cooling liquid to each rotor assembly.

3. An electric machine according to claim 2, characterized in that,

The rotor assembly comprises a rotor core and a plurality of magnetic steel blocks, wherein the rotor core is annularly arranged, the rotor core is sleeved on the rotating shaft, a plurality of accommodating grooves are formed in the rotating shaft at intervals, and the magnetic steel blocks are fixedly embedded in the accommodating grooves in a one-to-one correspondence mode.

4. The motor of claim 3, wherein the motor is configured to control the motor,

The rotor assembly includes a thermal firmware; the inner ring of the rotor core is provided with a weight removing ring, the rotor core is sleeved on the weight removing ring, and the weight removing ring is sleeved on the rotating shaft; the thermosetting part is filled and solidified at the joint of the weight removing ring, the magnetic steel block and the rotor core in a thermosetting mode, so that the rotor core, the magnetic steel block and the weight removing ring are fixed.

5. The motor of claim 4, wherein the motor is configured to control the motor,

The cooling air flue is arranged between the heat-setting piece and the magnetic steel block and between the heat-setting piece and the rotor core, the cooling air flue is communicated with the through hole and the outside, and the cooling air flue receives air flow from the through hole and leads the air flow to the outside.

6. The motor of claim 1, wherein the motor is configured to control the motor,

The nozzle is disposed on the stator assembly and is located on at least one side of the stator assembly facing the rotor assembly.

7. The motor of claim 6, wherein the motor is configured to control the motor,

The nozzle is arranged on the top wall of the shell in the height direction of the motor in a use and placement state.

8. The motor of claim 6, wherein the motor is configured to control the motor,

The housing includes an end cap disposed opposite to the rotor assembly along an axial direction of the rotating shaft, and the nozzle is disposed on the end cap or disposed between the end cap and the rotor assembly and fixed with respect to the end cap.

9. The motor of claim 6, wherein the motor is configured to control the motor,

The number of the nozzles is a plurality, and the nozzles are arranged at intervals.

10. The motor of claim 1, wherein the motor is configured to control the motor,

The stator assembly is provided with a cooling channel which is communicated with the nozzle, and the cooling channel is used for receiving cooling liquid and conveying the cooling liquid to the nozzle.