CN216489947U - Stator seat of motor, stator unit, motor and vehicle - Google Patents

Abstract

The application discloses a stator seat, a stator unit, a motor and a vehicle of motor. The stator seat of motor includes the back shaft, the back shaft forms through hole and ventilation hole, the through hole certainly the terminal surface of back shaft is followed the axial of back shaft is run through the back shaft, the ventilation hole certainly the outer peripheral face of back shaft is followed the radial extension of back shaft, the ventilation hole intercommunication the through hole. In the stator seat, the stator unit, the motor and the vehicle of this application embodiment, the through hole is connected in the ventilation hole, can be with the heat in the through hole outside leading out the through hole, improved the radiating effect of stator seat, and then improve the heat dispersion of motor.

Description

Stator seat of motor, stator unit, motor and vehicle

Technical Field

The application relates to the technical field of motors, in particular to a stator seat, a stator unit, a motor and a vehicle of the motor.

Background

As a general power device, a motor is used in various fields. The motor converts electric energy into kinetic energy in an electromagnetic induction mode, and heat is generated in the energy conversion process. If the heat generated by the motor in the working process is not dissipated in time, the normal work of the motor is influenced. Therefore, how to improve the heat dissipation performance of the motor has been a subject of study.

SUMMERY OF THE UTILITY MODEL

The application provides a stator seat, a stator unit, a motor and a vehicle of motor.

The stator seat of the motor of this application embodiment includes the back shaft, the back shaft forms through hole and ventilation hole, the through hole certainly the terminal surface of back shaft is followed the axial of back shaft is run through the back shaft, the ventilation hole certainly the outer peripheral face of back shaft is followed the radial extension of back shaft, the ventilation hole intercommunication the through hole.

In some embodiments, the number of the ventilation holes is plural, and the plural ventilation holes are arranged at intervals along the circumferential direction of the support shaft.

In some embodiments, the support shaft is further formed with a mounting hole extending from an end surface of the support shaft in an axial direction of the support shaft, the mounting hole being provided at a distance from the through-hole.

In some embodiments, the stator base includes a heat dissipation structure attached to the outer circumferential surface, the heat dissipation structure and the ventilation hole being spaced apart in an axial direction of the support shaft, and the heat dissipation structure being formed with an airflow channel extending in the axial direction of the support shaft.

In some embodiments, the heat dissipation structure includes an annular wall surrounding the support shaft and a connection wall connecting the support shaft and the annular wall, the annular wall and the connection wall enclosing the airflow channel.

In certain embodiments, the heat dissipating structure comprises a heat sink disposed in the airflow passage, the heat sink connecting the annular wall.

In some embodiments, the fins are curved.

The stator unit of the embodiment of the present application includes the stator holder of the motor of any one of the above embodiments; and the iron core is sleeved outside the base.

The electric machine of the embodiments of the present application includes a first end piece; a second end piece disposed opposite the first end piece; the stator unit of the above embodiment is disposed in a space surrounded by the first end member and the second end member, and the vent hole is communicated with the space.

The vehicle of the embodiment of the present application includes the motor of the above embodiment; and the execution component is connected with the motor.

In the stator seat, the stator unit, the motor and the vehicle of this application embodiment, the through-hole is connected to the ventilation hole, can be with the heat in the through-hole outside leading out the through-hole, improved the radiating effect of stator seat, and then improve the heat dispersion of motor.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic plan view of a motor according to an embodiment of the present application;

fig. 2 is a schematic cross-sectional view of a motor according to an embodiment of the present application;

fig. 3 is a perspective view of a stator base of the motor according to the embodiment of the present application;

fig. 4 is a schematic plan view of a stator seat of an electric machine according to an embodiment of the present application;

fig. 5 is a schematic plan view of a vehicle according to an embodiment of the present application.

Description of the main element symbols:

vehicle 1000, electric machine 100, first end piece 10, second end piece 20, stator unit 30, stator holder 31, support shaft 311, through-hole 312, ventilation hole 313, mounting hole 314, iron core 32, heat dissipation structure 33, air flow channel 331, annular wall 332, connecting wall 333, heat sink 334, rotor unit 40, housing 41, magnet 42, actuator 200.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" 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. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The motor is one of essential parts of various electromechanical products, along with the more and more perfect algorithm and position detection technology, the outer rotor brushless direct current motor is widely applied as one of various motor types, the outer rotor brushless direct current motor is characterized in that a winding is arranged on a stator of the motor, a permanent magnet magnetic ring and a rotor shell are adhered together and arranged outside the stator, and a structure that the rotor is arranged outside and inside the stator is formed. Compared with the motor with an inner rotor structure, the outer rotor brushless direct current motor has the advantages of higher output torque and output power. However, due to the structural limitation of the motor, the heat dissipation of the motor becomes a concern.

Referring to fig. 1 and 2, the present embodiment discloses an electric machine 100, where the electric machine 100 includes a first end part 10, a second end part 20, and a stator unit 30, and the second end part 20 is disposed opposite to the first end part 10. The stator unit 30 is disposed in a space surrounded by the first end member 10 and the second end member 20.

Specifically, the first end member 10 and the second end member 20 are located at both ends of the motor 100, respectively. The first end piece 10 may be end capped and the first end piece 10 may be fixed relative to the stator unit 30. The second end piece 20 may be an impeller and the second end piece 20 may rotate relative to the stator unit 30. During rotation of the second end member 20, the second end member 20 may create an airflow to dissipate heat from the motor 100.

The first end member 10 and the second end member 20 may be each of a hollow structure and communicate with the inner space of the motor 100. In this way, in the process of rotating the second end member 20, the airflow may sequentially pass through the second end member 20, the interior of the motor 100, and the first end member 10, so as to bring the interior of the motor 100 out of the motor 100, thereby achieving the effect of improving the working performance of the motor 100.

The first end piece 10 can be made of a metal material such as stainless steel, aluminum alloy, etc. to improve the strength of the first end piece 10. Similarly, in order to improve the strength of the second end member 20, the second end member 20 may be made of a metal material such as stainless steel or aluminum alloy.

The stator unit 30 refers to a stationary portion of the motor 100, and the stator unit 30 mainly generates a rotating magnetic field. The stator unit 30 may include a stator seat 31 and a core 32, wherein the core 32 is an important component of the magnetic circuit of the motor 100 and may be formed by punching silicon steel sheets into fan-shaped sheets and overlapping the fan-shaped sheets on the positioning ribs. The iron core 32 is also used as a mounting and fixing component of the stator winding, that is, the iron core 32 can be wound with a coil, and the coil can be a copper wire; the core 32 may be annular, so that the core 32 may be sleeved outside the stator seat 31.

The stator seat 31 serves as a component for fixing the iron core 32, so that the stator seat 31 can play a good supporting role, the stator seat 31 can be an iron casting or an aluminum casting, and the weight of the motor 100 can be reduced because the material of the aluminum material is light and the stator seat 31 is the aluminum casting.

Referring to fig. 3 and 4, in some embodiments, the stator holder 31 includes a support shaft 311, the support shaft 311 forms a through hole 312 and a vent hole 313, the through hole 312 penetrates the support shaft 311 from an end surface of the support shaft 311 along an axial direction of the support shaft 311, the vent hole 313 extends from an outer circumferential surface of the support shaft 311 along a radial direction of the support shaft 311, and the vent hole 313 communicates with the through hole 312.

As described above, vent hole 313 is connected to through-hole 312, and heat in through-hole 312 can be conducted out of through-hole 312, thereby improving the heat radiation effect of stator holder 31 and improving the heat radiation performance of motor 100.

Specifically, the support shaft 311 serves as a support for the stator holder 31, and the support shaft 311 may allow the motor 100 to be mounted on an external part. The support shaft 311 protrudes from the first end member 10. The through holes 312 can reduce the weight of the support shaft 311, and can allow the air flow to flow out along the through holes 312, thereby removing heat.

The cross-sectional profile of through-hole 312 may be in the shape of a fan, square, circle, or the like. The application is not limited to a particular shape of the through-holes 312. The center line of the through-hole 312 may be linear or curved. The number of the through-holes 312 may be plural, and the plural through-holes 312 are provided at intervals in the circumferential direction of the support shaft 311.

As discussed above, the support shaft 311 may be connected to an external part (e.g., an arm of an aircraft), and thus, in the case where one end of the support shaft 311 is connected to the external part, one end of the through-hole 312 may be closed by the external part, so that the through-hole 312 is not passed and the heat dissipation effect is poor. Therefore, in the present application, the ventilation hole 313 is opened on the outer peripheral surface of the support shaft 311, and the ventilation hole 313 is communicated with the through hole 312, so that the air flow is smooth, and the heat dissipation effect of the motor 100 is improved.

The ventilation hole 313 may be a circular hole or a square hole, and the shape of the ventilation hole 313 is not limited in the present application as long as the ventilation hole 313 is ensured to communicate with the through hole 312.

As shown in fig. 2, in the present embodiment, the ventilation hole 313 communicates with a space surrounded by the first end member 10 and the second end member 20. In this way, the ventilation holes 313 carry heat to the space enclosed by the first end member 10 and the second end member 20, and finally can be dissipated to the outside of the motor 100 through the first end member 10.

In some embodiments, the number of the ventilation holes 313 is plural, and the plural ventilation holes 313 are arranged at intervals along the circumferential direction of the support shaft 311. In this way, the plurality of ventilation holes 313 can improve the ventilation effect of the through holes 312, thereby improving the heat dissipation efficiency of the motor 100.

Specifically, the number of the ventilation holes 313 may be 4, 6, 8, or the like. The plurality of ventilation holes 313 may be arranged along the same circumference or may be arranged along different circumferences. One through hole 312 may be communicated with one vent hole 313, or a plurality of vent holes 313 may be communicated with each other.

Referring to fig. 3 and 4, in some embodiments, the supporting shaft 311 is further formed with a mounting hole 314, the mounting hole 314 extends from an end surface of the supporting shaft 311 in an axial direction of the supporting shaft 311, and the mounting hole 314 is spaced apart from the through hole 312.

In this manner, the mounting hole 314 may be used to mount components such as a rotating shaft of the motor 100. The mounting hole 314 is circular in profile to facilitate mounting of cylindrical components, such as shafts, bearings, and the like. The mounting hole 314 is located at the center of the support shaft 311, and the through-hole 312 is located at an eccentric position of the support shaft 311. Further, the mounting hole 314 is disposed coaxially with the mounting shaft, or the centerline of the mounting hole 314 coincides with the centerline of the mounting shaft.

Referring to fig. 3 and 4, in some embodiments, the stator holder 31 includes a heat dissipation structure 33 connected to the outer peripheral surface, the heat dissipation structure 33 and the ventilation holes 313 are spaced apart from each other along the axial direction of the supporting shaft 311, and the heat dissipation structure 33 is formed with an airflow channel 331 extending along the axial direction of the supporting shaft 311.

In this way, the airflow channel 331 allows airflow to pass through the stator base 31 more smoothly, and further allows the heat dissipation structure 33 to dissipate heat inside the motor 100 to the outside of the motor 100. The heat dissipation structure 33 and the ventilation hole 313 are arranged at an interval in the axial direction of the support shaft 311, and the heat dissipation structure 33 can be prevented from blocking the ventilation hole 313.

Specifically, the air flow passage 331 extends in the axial direction of the mounting shaft, and has a structure in which both ends are open. The cross-section of the air flow path 331 may be in the shape of a sector, circle, or the like.

Referring to fig. 3 and 4, in some embodiments, the heat dissipating structure 33 includes an annular wall 332 and a connecting wall 333, the annular wall 332 surrounds the supporting shaft 311, the connecting wall 333 connects the supporting shaft 311 and the annular wall 332, and the annular wall 332 and the connecting wall 333 enclose the air flow channel 331. In this way, the air flow path 331 is formed by the annular wall 332 and the connecting wall 333, and the structure is simpler.

In some embodiments, the heat dissipating structure 33 includes fins 334 disposed in the airflow passage 331, the fins 334 connecting the annular wall 332.

Thus, the heat sink 334 can increase the heat dissipation area of the heat dissipation structure 33, so as to improve the heat dissipation effect of the heat dissipation structure 33, and further ensure the normal operation of the motor 100. Specifically, the heat sink 334 may be fin-shaped, and the heat sink 334 may be made of copper material, so that the heat sink 334 has better thermal conductivity; the fins 334 may also be made of an aluminum alloy material that provides sufficient stiffness and is inexpensive and lightweight. It will be appreciated that the provision of the heat sink 334 is effective to conduct heat generated by the stator excitation within the machine 100 and the load being drawn by the machine 100.

The heat dissipation fins 334 are disposed inside the stator seat 31, and the iron core 32 is sleeved outside the stator seat 31, so that the heat dissipation fins 334 can dissipate heat in a convection manner after absorbing the heat generated by the stator unit 30, and in the process of convection heat dissipation, the heat dissipation area is mainly determined by the surface area of the heat dissipation fins 334, and the larger the heat dissipation area is, the better the heat dissipation effect is.

Set up a plurality of fin 334 of spaced in this application then, can effectual increase heat radiating area, reach good radiating effect to, set up at two adjacent fin 334 intervals, in order to make things convenient for the conduction air current, make the heat can be better distribute away.

Specifically, the other end of the heat sink 334 is spaced from the mounting shaft. Thus, a gap is formed between the heat sink 334 and the mounting shaft, so that the area of the airflow channel 331 is larger, the resistance of the airflow in the airflow channel 331 is reduced, and the overall heat dissipation effect is better.

In some embodiments, fins 334 are curved. For example, the fins 334 may be arcuate or the like. The full-shape fins 334 increase the surface area of the fins 334, thereby improving the heat dissipation effect of the fins 334.

Referring again to fig. 2, in some embodiments, the motor 100 further includes a rotor unit 40, and the rotor unit 40 is disposed outside the stator unit 30 and can rotate relative to the stator unit 30.

Specifically, the rotor unit 40 includes a housing 41 and a magnet 42. The housing 41 may have a hollow structure, and the housing 41 may be fitted over the iron core 32 of the stator unit 30 to form a basic structure of the outer rotor motor 100. The magnet 42 may be a plurality of tile-shaped magnetic steels, and the magnet 42 may be fixedly connected to the inner wall of the housing 41 by gluing with glue, so that the magnet 42 may be fixedly connected to the housing 41 while the magnetic effect of the magnet 42 is not affected.

Referring to fig. 2, the heat dissipation principle of the motor 100 according to the embodiment of the present application is briefly described as follows: in the motor 100 according to the embodiment of the present application, the airflow may enter the motor 100 from the second end member 20, wherein a portion of the airflow enters the through hole 312 and another portion of the airflow enters the airflow channel 331. The air flow entering through-hole 312 flows along through-hole 312 and finally exits electric machine 100 through the vent hole and first end member 10. The airflow entering the airflow passage 331 passes to remove heat from the heat sink 334 and ultimately exits the motor 100 from the first end member 10.

Referring to fig. 5, a vehicle 1000 according to an embodiment of the present disclosure includes an actuator 200 and the motor 100 according to any of the embodiments, where the actuator 200 is connected to the motor 100.

In this way, by connecting the actuator 200 and the motor 100 together, the motor 100 can drive the actuator 200 to perform the task of the corresponding operation.

Specifically, the vehicle 1000 according to the embodiment of the present invention is not limited to a type, and may be a small-sized machine such as a blower or a fascia gun, or a large-sized machine such as a robot, a manned aircraft, or a flying car, as long as the vehicle 1000 is provided with the motor 100 having a structure improved to achieve better heat dissipation in any of the above embodiments. As shown in fig. 5, the vehicle 1000 is a flying automobile and the actuator 200 is a propeller.

In the description of the present specification, reference to the description of "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" or the like 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 application. In this specification, schematic representations of the above terms do not necessarily refer 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.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a stator seat of motor, its characterized in that includes the back shaft, the back shaft forms through hole and ventilation hole, the through hole certainly the terminal surface of back shaft is followed the axial of back shaft is run through the back shaft, the ventilation hole certainly the outer peripheral face of back shaft is followed the radial extension of back shaft, the ventilation hole intercommunication the through hole.

2. The stator base of an electric machine according to claim 1, wherein the number of the ventilation holes is plural, and the plural ventilation holes are arranged at intervals in a circumferential direction of the support shaft.

3. The stator frame according to claim 1, wherein the support shaft further has a mounting hole formed therein, the mounting hole extending from an end surface of the support shaft in an axial direction of the support shaft, the mounting hole being spaced apart from the through hole.

4. The stator base according to claim 1, wherein the stator base includes a heat dissipation structure attached to the outer circumferential surface, the heat dissipation structure and the ventilation holes being spaced apart from each other in an axial direction of the support shaft, the heat dissipation structure being formed with an airflow passage extending in the axial direction of the support shaft.

5. The stator base of an electric machine according to claim 4, wherein the heat dissipation structure comprises an annular wall surrounding the support shaft and a connecting wall connecting the support shaft and the annular wall, the annular wall and the connecting wall enclosing the air flow channel.

6. The stator base of an electric machine of claim 5 wherein the heat dissipating structure comprises a heat sink disposed in the air flow passage, the heat sink connecting the annular wall.

7. The stator base of an electric machine as claimed in claim 6 wherein the fins are curved.

8. A stator unit, comprising:

a stator housing for an electrical machine as claimed in any one of claims 1 to 7; and

and the iron core is sleeved outside the stator seat.

9. An electric machine, comprising:

a first end piece;

a second end piece disposed opposite the first end piece; and

the stator unit of claim 8, said stator unit being disposed within a space enclosed by said first end piece and said second end piece, said vent communicating with said space.

10. A vehicle, comprising:

the electric machine of claim 9; and

and the execution component is connected with the motor.

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