WO2019127226A1

WO2019127226A1 - Stator assembly structure and fabrication method therefor, motor, power set, and unmanned aerial vehicle

Info

Publication number: WO2019127226A1
Application number: PCT/CN2017/119441
Authority: WO
Inventors: 陶志杰; 颜学力; 卢曰强
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2017-12-28
Filing date: 2017-12-28
Publication date: 2019-07-04
Also published as: CN108702066B; CN108702066A

Abstract

A stator assembly structure, belonging to the technical field of motors, comprising a stator assembly (10) and an adapter circuit board (20) connected to the stator assembly (10), wherein the stator assembly (10) comprises a stator core (11) and an insulating layer (12) which is coated on the surface of the stator core (11); and the insulating layer (12) is connected to the adapter circuit board (20) by means of a plurality of connecting pins (30). The stator assembly structure is more compact, and has higher stability and smaller volume. The connection positions of connection pins are relatively fixed, which is advantageous for automated production and implementing quick assembly. In addition, also provided are a motor, a power set and an unmanned aerial vehicle that employ the stator assembly structure, as well as a method for fabricating the stator assembly structure.

Description

Stator assembly structure and manufacturing method thereof, motor, power package and unmanned aerial vehicle

[Technical Field]

The embodiment of the invention belongs to the technical field of electric motors, and in particular relates to a stator assembly structure, a motor, a power package and an unmanned aerial vehicle using the stator assembly structure, and a method for manufacturing the stator assembly structure.

【Background technique】

The motor generally consists of three parts: a control part, an electromagnetic part and a structural part. The structural part is further divided into a stator structure and a rotor structure. The stator structure includes a coil, and after energizing the coil, the magnetic field generated by the permanent magnet in the rotor structure is combined. According to the principle of the force of the energized conductor in the magnetic field, the rotor structure will produce a rotary motion. The control part of the motor controls the parameters such as the voltage and current of the coil to the stator structure through the chip control, and the parameters such as the rotational speed and torque of the motor are realized. Therefore, the coil of the stator structure is generally connected to the main control circuit through the circuit board, and then the stator structure and the circuit board are integrally mounted on the motor base. The inventors have found in the process of implementing the present invention that the prior art has at least the following problem:

The existing stator structure and circuit board are supported and assembled by some auxiliary components, and the assembled structure is relatively loose, not stable enough, easy to break during the production process, inconvenient to flow on the production line, and the assembly is not convenient, and automatic assembly cannot be realized; In the prior art, the outlet end of the coil is generally soldered to the circuit board by hand soldering, the welding efficiency is low, and abnormalities such as soldering, false soldering, and insufficient solder joints are easily generated, and the soldering yield is not high.

[Summary of the Invention]

In order to solve the above problems, an embodiment of the present invention provides a stator assembly structure to solve the problem that the existing assembly structure is loose and unstable, assembly is inconvenient, and product yield is low. In addition, an electric machine, a power pack, and an unmanned aerial vehicle employing the stator assembly structure are provided, and a method of manufacturing the stator assembly structure is provided.

In one aspect, an embodiment of the present invention provides a stator assembly structure, the stator assembly structure including a stator assembly and a transit circuit board connected to the stator assembly;

Wherein the stator assembly includes a stator core and an insulating layer coated on a surface of the stator core, and the insulating layer and the transit circuit board are connected by a plurality of connecting pins.

In the stator assembly structure provided by the present invention, the insulating layer coated on the surface of the stator core is connected to the transit circuit board through a plurality of connecting pins, the assembled components are less, and the stator assembly structure can be more compact, so that the stator assembly structure It has higher stability and smaller volume, and the connection position of the connecting pins is relatively fixed, which is convenient for automatic production and quick assembly, which can effectively improve the product yield compared with manual assembly.

In another aspect, an embodiment of the present invention provides a motor including a rotor structure and a stator assembly structure, and the rotor structure and the stator assembly structure are cooperatively disposed;

The stator assembly structure includes a stator assembly and a transit circuit board coupled to the stator assembly;

In the motor provided by the present invention, the stator assembly structure is used to connect the insulating layer coated on the surface of the stator core with the adapter circuit board through a plurality of connecting pins, and fewer components are assembled, and the stator assembly structure can be more compact. The stator assembly structure has higher stability and smaller volume, which makes the motor work performance more stable.

In another aspect, an embodiment of the present invention provides a power kit including a motor and a propeller, the motor driving the propeller to rotate, the motor including a rotor structure and a stator assembly structure, the rotor structure and the Stator assembly structure matching setting;

In the power package provided by the invention, the stator assembly structure of the motor is assembled with fewer components, and the stator assembly structure can be more compact, so that the stator assembly structure has higher stability and smaller volume, and the working performance of the motor is more stable. The propeller is stably driven to rotate.

In another aspect, an embodiment of the present invention provides an unmanned aerial vehicle including a body, a plurality of arms extending outward from the body, and a power package disposed on the arm, the power The apparatus includes a motor and a propeller that drives the propeller to rotate, the electric machine including a rotor structure and a stator assembly structure, the rotor structure and the stator assembly structure being cooperatively disposed;

In the unmanned aerial vehicle provided by the invention, the stator assembly structure of the motor in the power package is assembled with fewer components, and the stator assembly structure can be more compact, so that the stator assembly structure has higher stability and smaller volume, and can The working performance of the motor is more stable, and the rotation of the propeller is stably driven, which can improve the safety of the flying of the unmanned aerial vehicle.

In another aspect, an embodiment of the present invention provides a method of manufacturing a stator assembly structure, including:

Providing a certain sub-core, a circuit adapter board and a plurality of connection pins;

Coating an insulating layer on the stator core;

The insulating layer and the circuit adapter plate are connected by the plurality of connection pins.

The manufacturing method provided by the invention facilitates the production of the stator assembly structure, and the connection position of the connection pins is relatively fixed, which facilitates automatic production and realizes rapid assembly, and can effectively improve product yield and assembled components compared with manual assembly. Less, the assembly can be more compact, and the resulting stator assembly structure has higher stability and smaller volume.

[Description of the Drawings]

In order to more clearly illustrate the present invention or the prior art, a brief description of the drawings used in the embodiments or the description of the prior art will be briefly made. Obviously, the drawings in the following description are the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

1 is a schematic view of a stator assembly structure according to an embodiment of the present invention;

2 is a schematic diagram of a stator assembly according to an embodiment of the present invention;

3 is a schematic view of a stator core according to an embodiment of the present invention;

4 is another schematic diagram of a stator assembly structure according to an embodiment of the present invention;

5 is a cross-sectional view showing a stator assembly structure according to an embodiment of the present invention;

6 is an exploded view of a stator assembly structure according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a power package according to an embodiment of the present invention; FIG.

8 is a partial schematic view of an unmanned aerial vehicle according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a manufacturing process of a stator assembly structure according to an embodiment of the present invention.

Description of the reference signs:

10 stator assembly

11 stator core

111 iron core column

12 insulation

121 seat

122 pin section

123 limit pieces

13 stator winding

20 transfer board

21 connection hole

22 Limits

30 connecting pins

40 base

1 body

2 arm

3 power suit

100 motor

200 propeller

【Detailed ways】

The technical solutions in the embodiments of the present invention are clearly and completely described below in order to enable a person skilled in the art to better understand the solution of the present invention. All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention.

References to "an embodiment" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the invention. The appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.

An embodiment of the present invention provides a stator assembly structure, the stator assembly structure including a stator assembly and a transit circuit board connected to the stator assembly;

The embodiment of the present invention further provides a motor including a rotor structure and a stator assembly structure, and the rotor structure and the stator assembly structure are cooperatively disposed;

Based on the above motor, an embodiment of the present invention further provides a power package including a motor and a propeller, the motor driving the propeller to rotate, the motor including a rotor structure and a stator assembly structure, the rotor structure and the The stator assembly structure is arranged;

Based on the above power kit, an embodiment of the present invention further provides an unmanned aerial vehicle including a fuselage, a plurality of arms extending outward from the fuselage, and a power kit disposed on the arm. The power unit includes a motor and a propeller, the motor drives the propeller to rotate, the motor includes a rotor structure and a stator assembly structure, and the rotor structure and the stator assembly structure are cooperatively disposed;

The embodiment of the invention further provides a manufacturing method of the above stator assembly structure, comprising:

Coating an insulating layer on the stator core;

Some specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the subsequent embodiments of the present invention, when a specific example is involved, the description will be based on a three-phase brushless DC motor.

Referring to FIGS. 1 and 2, an embodiment of the present invention provides a stator assembly structure including a stator assembly 10 and a transit circuit board 20 coupled to the stator assembly 10, wherein the stator assembly 10 includes a stator core 11 and is wrapped around the stator The insulating layer 12 on the surface of the iron core 11, the insulating layer 12 and the transit circuit board 20 are connected by a plurality of connecting pins 30, and the insulating layer 12 functions to fix the stator core 11 and isolate the stator core 11 and the transit circuit board 20. The function (in the prior art, a separate plastic piece is provided in the stator core 11 and the adapter circuit board 20), the manner of coating the insulating layer 12 on the stator core 11 compared to the prior art. The assembled parts can be reduced and the assembly is more convenient, and the stability is also higher due to the tight coating. In the present embodiment, the plurality of connection pins 30 are disposed in pairs, that is, the number of the connection pins 30 is an even number. In some embodiments, as shown in FIG. 3, the stator core 11 is an annular structure with a iron core 111, and the insulating layer 12 is only coated on the annular outer surface of the stator core 11, and the annular inner surface is not included. The insulating layer 12 can save material on the one hand, and can provide more assembly space for assembling the rotor structure or the matching component of the motor when assembling the motor.

In the embodiment of the present invention, the insulating layer 12 may be a plastic structure, and the insulating layer 12 is formed on the surface of the stator core 11 by an injection molding process; in some embodiments, referring to FIG. 1 and FIG. 2, the insulating layer 12 is along The stator core 11 extends outwardly in the axial direction to form a seat body 121. The seat body 121 supports the stator core 11. The base body 121 is provided with a plurality of pin portions 122, and the connecting end faces of the adapter circuit board 20 are correspondingly opened. Each of the connecting holes 21, wherein the number of the pin portions 122 and the connecting holes 21 is the same as the number of the connecting pins 30, that is, each connecting pin 30 corresponds to a pin portion 122 and a connecting hole 21, and the pin 30 is connected. One end is inserted into a pin portion 122, and the other end is fixed through a connecting hole 21. The number of the pin portion 122 and the connecting hole 21 and the number of the connecting pins 30 are determined according to the type of the motor, such as a three-phase brushless DC motor. The number of the pin portions 122 and the connecting holes 21 and the number of the connecting pins 30 are six, and six of the connecting pins 30 correspond to one phase circuit in groups of two.

In some embodiments of the present invention, the pin portion 122 is a pin post (shown in FIG. 2 ) disposed in the circumferential direction of the base body 121 , and the pin post extends outwardly from the base portion of the base body 121 , and the pin post Some or all of the body 121 may be integrally connected; in some embodiments, the pin portion 122 may also be a pin post extending outward from the connecting end surface of the seat body 121; in other embodiments, the pin portion 122 may also be a pin slot recessed inwardly from the connecting end of the base 121. Of course, in some embodiments, the pin portion 122 can also be disposed independently of the base body 121, that is, the pin portion 122 is not directly connected to the seat body 121. Since the position of the pin portion 122 is relatively fixed, the connecting pin 30 can be inserted into the corresponding pin portion 122 by a dedicated pin inserting machine during assembly of the stator assembly structure, which can effectively improve production efficiency.

Further, in the embodiment of the present invention, referring to FIG. 4, the stator assembly 10 further includes a stator winding 13 including one or more coils, wherein each coil corresponds to a pair of connecting pins 30, and the coil includes a slot line. And two outlet ends, the slot lines are wound around the corresponding core legs 111 of the stator core 11, and the two outlet ends are respectively wound around the corresponding connection pins 30 and lead out the core post 111; specifically, For the three-phase brushless DC motor, in the three-phase brushless DC motor, the number of the pin portion 122 and the connecting hole 21 and the number of the connecting pins 30 are six, corresponding to three coils, and the three coils are common. At the six outlet ends, the six connection pins 30 are wound by two groups corresponding to one coil. After the winding is completed, the six outlet ends are respectively led out from the six connection pins 30. In this embodiment, the outlet end and the corresponding connection pin 30 are electrically connected. After the connection pin 30 is soldered to the corresponding connection hole 21 on the adapter circuit board 20, the outlet end and the transit circuit board 20 can be realized. The electrical connection, the connecting pin 30 can be a conductive tinned copper clad steel wire. When the connecting pin 30 is soldered to the corresponding connecting hole 21 on the transit circuit board 20, the stator assembly structure is placed in the wave crest furnace to the peak. The welding form completes the welding of the connecting pin 30 and the adapter circuit board 20, which can realize batch welding, high welding efficiency, and can effectively avoid the situation of virtual welding, false welding, incomplete solder joints, etc., and has high welding yield. . Further, in some embodiments, the connecting portions of the two outgoing ends of the coil and the corresponding connecting pins 30 are further covered with a conductive layer to achieve a better conductive effect. In some embodiments of the present invention, the entire surface of the assembled stator assembly 10 may be covered with another insulating layer, and the whole of the stator assembly 10 is insulated. The connecting pin 30 passes through the insulating layer and the transit circuit board 20 Docking. In some embodiments, there is a certain requirement for the direct distance between the two connecting pins corresponding to the same coil, for example, the angle between the connecting pins of the two connecting pins and the stator core is not less than 40 degrees. In addition, there is a certain requirement for the depth at which the connecting pin is inserted into the pin portion and the diameter of the pin portion of the pin portion, specifically to ensure that the connecting pin has a certain pulling force after the insertion of the pin portion.

Further, in the embodiment of the present invention, referring to FIG. 1 and FIG. 3 together, the insulating layer 12 is further provided with a limiting member 123, and the limiting circuit portion 20 is provided with a limiting portion 22 through the limiting member 123 and the limiting portion. The matching of the connecting pin 30 and the adapter circuit board 20 is achieved. The limiting member 123 can be a limiting post or a limiting piece. The limiting member 123 can be along the connecting end face of the base 121 along the stator iron. The axial direction of the core 11 is extended outwardly; the limiting portion 22 can be a limiting slot or a limiting through hole. The shape of the limiting slot and the limiting through hole can be set according to actual conditions, and is not limited herein. 123 can be inserted into the limiting portion 22, and after the connecting pin 30 is docked with the positioning of the transit circuit board 20, the circumferential movement or the axial movement of the stator assembly 10 can be prevented, and the connecting pin 30 can be prevented from rotating during the production assembly process. The solder joint of the circuit board 20 is broken.

The stability of the stator assembly structure is improved; in some embodiments, a certain gap may be provided between the insulation layer 12 and the transit circuit board 20 to facilitate heat dissipation of the stator assembly 10 after energization.

In the embodiment of the present invention, referring to FIG. 5 and FIG. 6, the stator assembly structure in the above embodiment further includes a base 40, wherein the adapter circuit board 20 is fixed on the base 40, and based on the assembled stator assembly structure, further The stator assembly structure is assembled with other components such as the rotor assembly by automated assembly to obtain the motor.

Compared with the prior art, the stator assembly structure provided in the above embodiment of the present invention has at least the following advantages:

(1) In the stator assembly structure provided by the present invention, the insulating layer 12 coated on the surface of the stator core 11 is connected to the transit circuit board 20 through a plurality of connecting pins 30, and fewer components are assembled, and the stator assembly structure can be More compact, making the stator assembly structure more stable and smaller;

(2) Since the connection position of the connecting pin 30 is relatively fixed, it is advantageous for automatic production and quick assembly, and the product yield can be effectively improved compared with manual assembly;

(3) The stator core 11 is supported by the seat body 121 of the insulating layer 12, and the stator assembly structure can be assembled without an additional support member, which is more convenient for assembly.

Based on the stator assembly structure provided by the above embodiment, the embodiment of the present invention further provides a motor including a rotor structure and a stator assembly structure, and the rotor structure and the stator assembly structure are matched; the following embodiments refer to FIG. 1 to FIG. The stator assembly structure includes a stator assembly 10 and a transit circuit board 20 connected to the stator assembly 10, wherein the stator assembly 10 includes a stator core 11 and an insulating layer 12, an insulating layer 12 and a switching circuit that are coated on the surface of the stator core 11. The board 20 is connected by a plurality of connection pins 30, and the insulating layer 12 functions to fix the stator core 11 and isolate the stator core 11 and the adapter circuit board 20 (in the prior art, the stator core 11 and the switching circuit) In the board 20, a separate plastic sheet is provided. Compared with the prior art, the manner of coating the insulating layer 12 on the stator core 11 can reduce the assembled components and is more convenient to assemble, due to tight coating. The stability is also higher. The stator assembly structure of the motor provided by the embodiment of the invention has fewer components, more compact structure, higher stability and smaller volume, and the motor can be miniaturized and has stable working performance. In some embodiments, as shown in FIG. 3, the stator core 11 is an annular structure with a iron core 111, and the insulating layer 12 is only coated on the annular outer surface of the stator core 11, and the annular inner surface is not included. The insulating layer 12 can save material on the one hand, and can provide more assembly space for assembling the rotor structure or the matching component of the motor when assembling the motor.

In the embodiment of the present invention, the stator assembly structure further includes a base 40. The adapter circuit board 20 is fixed on the base 40. After the stator assembly 10 and the adapter circuit board 20 are assembled, the assembly can be further automated. The stator assembly structure is assembled with other components such as the rotor assembly to obtain a motor.

In the embodiment of the present invention, the finite-portion portion 22 is disposed on the transit circuit board 20, and the limiting member 123 is disposed at one end of the insulating layer 12 and the transit circuit board 20, and the cooperation between the limiting member 123 and the limiting portion 22 is realized. The connecting pin 30 is docked with the positioning of the transit circuit board 20. In some embodiments, the limiting member 123 can be a limiting post or a limiting piece. The limiting member 123 can be extended from the connecting end surface of the base 121 along the axial direction of the stator core 11; the limiting portion 22 can be The shape of the limiting slot and the limiting through hole can be set according to the actual situation, which is not limited herein; the limiting member 123 can be inserted into the limiting portion 22, and the connecting pin 30 and the rotating pin After the positioning of the circuit board 20 is docked, the circumferential movement or the axial movement of the stator assembly 10 can be prevented, and the stability of the stator assembly structure can be improved; in some embodiments, the insulation layer 12 and the transit circuit board 20 can be disposed. A certain gap is beneficial to the heat dissipation of the stator assembly 10 after being energized, which is beneficial to improve the working performance of the motor.

In the embodiment of the present invention, the insulating layer 12 may be a plastic structure, and the insulating layer 12 is formed on the surface of the stator core 11 by an injection molding process; in some embodiments, the insulating layer 12 extends outward along the axial direction of the stator core 11. The base body 121 is formed to support the stator core 11 . The base body 121 is provided with a plurality of pin portions 122 . The connecting end surface of the adapter circuit board 20 is correspondingly provided with a plurality of connecting holes 21 , among which a plurality of The connecting pins 30 are arranged in pairs, that is, the number of the connecting pins 30 is an even number, and the number of the pin portions 122 and the connecting holes 21 is the same as the number of the connecting pins 30, that is, each connecting pin 30 corresponds to one pin. a portion 122 and a connecting hole 21, one end of the connecting pin 30 is inserted into a pin portion 122, and the other end is fixed through a connecting hole 21, the number of the pin portion 122 and the connecting hole 21 and the number of the connecting pins 30 are according to the motor The type is determined, for example, a three-phase brushless DC motor, the number of the pin portion 122 and the connecting hole 21 and the number of the connecting pins 30 are six, and six of the connecting pins 30 correspond to one in two. Phase circuit.

In the motor provided by the present invention, the stator assembly structure is used to connect the insulating layer 12 coated on the surface of the stator core 11 with the adapter circuit board 20 through a plurality of connecting pins 30, and fewer components are assembled, and the structure is more compact. The stator assembly structure has higher stability and smaller volume, which makes the motor more compact and the working performance is more stable.

Based on the above motor, the embodiment of the present invention further provides a power package. As shown in FIG. 7, the power package includes a motor 100 and a propeller 200. The motor 100 drives the propeller 200 to rotate. The motor 100 includes a rotor structure and the above embodiment. The stator assembly structure, the rotor structure and the stator assembly structure are provided. The specific configuration of the stator assembly structure and the connection relationship and functions of the components may be referred to the related technical contents in the above embodiments, and details are not described herein. In the power package provided by the present invention, since the stator assembly structure of the motor 100 is assembled with fewer components, the stator assembly structure can be more compact, so that the stator assembly structure has higher stability and smaller volume, and the motor 100 can be The volume is further miniaturized, and the work performance is more stable, and the rotation of the propeller 200 can be driven more stably.

Based on the power kit, the embodiment of the present invention further provides an unmanned aerial vehicle. As shown in FIG. 8 , the unmanned aerial vehicle includes a fuselage 1 , a plurality of arms 2 extending outward from the fuselage 1 , and a set of arms The power package 3 on the power unit 3 includes a motor 100 and a propeller 200. The motor 100 drives the propeller 200 to rotate. The motor 100 includes a rotor structure and a stator assembly structure provided in the above embodiment, and the rotor structure and the stator assembly structure are cooperatively disposed; For the specific configuration of the stator assembly structure and the connection relationship and function of the components, reference may be made to the related technical content in the foregoing embodiments, and details are not described herein again. In the unmanned aerial vehicle provided by the present invention, since the stator assembly structure adopted by the motor 100 in the power kit 3 has fewer components assembled, the stator assembly structure can be more compact, and the stator assembly structure has higher stability and smaller volume. The working performance of the motor 100 can be more stable, and the rotation of the propeller 200 can be stably driven, which can improve the safety of the flying of the unmanned aerial vehicle.

The embodiment of the present invention further provides a manufacturing method of a stator assembly structure. Referring to FIG. 1 to FIG. 6, the manufacturing method includes:

Providing a certain sub-core 11, a circuit adapter plate and a plurality of connection pins 30;

The stator core 11 is coated with an insulating layer 12, that is, a process from the state shown in FIG. 3 to the state shown in FIG. 2;

The insulating layer 12 and the circuit adapter plate are connected by a plurality of connection pins 30, that is, a process from the state shown in Fig. 2 to the state shown in Fig. 1.

In the embodiment of the present invention, the manufacturing method further includes: providing a certain sub-winding 13 (the stator assembly structure including the stator winding 13 is the state shown in FIG. 4), and the stator winding 13 includes one or more coils, each of which The coils include a slot line and two outlet ends; the slot lines are wound around the corresponding core legs 111 of the stator core 11, and the two outlet ends are respectively wound around the corresponding connection pins 30 and led out. Specifically, taking a coil winding process as an example, each outlet end corresponds to one connection pin 30, and firstly, one outlet end is wound on one of the connection pins 30 by a certain number of turns (the number of turns can be practical according to the actual number of turns) The situation is determined, which is not limited herein, and then the slot line is wound on the core post 111 of the stator core 11 (the manner in which the slot line is wound on the stator core 11 and the number of turns are determined according to actual motor 100 parameters), Finally, the other outlet end is circled on the other connection pin 30 to complete a winding of the number of turns. Since the outlet end and its corresponding connection pin 30 are conductive, when the connection pin 30 is connected After soldering to the corresponding connection hole 21 on the transit circuit board 20 Electrical connection of the outlet end to the transit circuit board 20 can be achieved. Further, in some embodiments, prior to attaching the connection pin 30 to the transit circuit board 20, the method of manufacture further includes: in two outgoing lines The connecting portion of the end and the corresponding connecting pin 30 is covered with a conductive layer to achieve a better conductive effect, specifically by immersing the portion where the outgoing end and the connecting pin 30 are combined in a tin furnace; in other embodiments The manufacturing method further includes: coating another insulating layer 12 on the entire surface of the stator assembly 10, insulating the whole of the stator assembly 10, and connecting the connecting pins 30 through the insulating layer to interface with the transit circuit board 20.

In an embodiment of the invention, the manufacturing method further includes: providing a base 40 for fixing the adapter circuit board 20 to the base 40. FIG. 9 provides an assembly process from the stator core 11 to the final stator assembly structure.

In the embodiment of the present invention, the insulating layer 12 is a plastic structure, and the step of coating an insulating layer 12 on the stator core 11 includes the step of injection molding.

In some embodiments, the step of coating the insulating core 12 on the stator core 11 further includes extending the insulating layer 12 outward in the axial direction of the stator core 11 to form a seat 121 supporting the stator core 11 . And a step of providing a plurality of pin portions 122 on the base 121; further, the step of connecting the insulating layer 12 and the circuit adapter plate through the plurality of connection pins 30 includes inserting one end of the connection pin 30 The pin portion 122 has the other end passing through the connecting hole 21 formed in the adapter circuit board 20 and performing the soldering step; wherein the pin insertion process can be realized by a special pin machine, and the welding process can put the stator assembly structure In the wave furnace, the welding of the connecting pin 30 and the adapter circuit board 20 is completed in the form of wave soldering, so that batch welding can be realized, the welding efficiency is high, and the welding, the false welding, the solder joints, etc. can be effectively avoided. , has a high welding yield. In some embodiments, the limiting circuit board 20 is provided with a limiting portion 22, and the limiting layer 123 is correspondingly disposed on the insulating layer 12; and the insulating layer 12 and the circuit board are connected through the plurality of connecting pins 30. The step of assembling the limiting member 123 to the limiting portion 22 to achieve the positioning of the connecting pin 30 and the adapter circuit board 20 is performed.

In some embodiments, after the assembly is completed, the manufacturing method further includes the steps of performing cleaning and brushing the varnish on the stator assembly structure, and further the manufacturing method further comprises performing a test step on the stator assembly structure, such as an internal resistance test. The insulation test, the withstand voltage test, etc., after the test is passed, based on the assembled stator assembly structure, the stator assembly structure and the other components such as the rotor assembly can be further assembled by the automated assembly to obtain the motor 100.

It is apparent that the above-described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments, and the preferred embodiments of the present invention are shown in the drawings, but do not limit the scope of the invention. The present invention may be embodied in many different forms and, <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or equivalently replace some of the technical features. . The equivalent structures made by using the description of the present invention and the contents of the drawings are directly or indirectly applied to other related technical fields, and are equally within the scope of the patent protection of the present invention.

Claims

A stator assembly structure, characterized in that the stator assembly structure comprises a stator assembly and a transit circuit board connected to the stator assembly;

Wherein the stator assembly includes a stator core and an insulating layer coated on a surface of the stator core, and the insulating layer and the transit circuit board are connected by a plurality of connecting pins.
The stator assembly structure according to claim 1, wherein the insulating layer is a plastic structure.
The stator assembly structure according to claim 1, wherein the insulating layer extends outward along an axial direction of the stator core to form a seat body to support the stator core, and the seat body is provided with a plurality of a pin portion, the connecting end surface of the transit circuit board is correspondingly provided with a plurality of connecting holes;

One end of the connecting pin is inserted into the pin portion, and the other end is fixed through the connecting hole.
The stator assembly structure according to claim 3, wherein the pin portion is a pin post extending outward from a connecting end surface of the base body; or

The pin portion is a pin slot recessed inward from a connecting end of the base body; or

The pin portion is a pin post provided in a circumferential direction of the base body.
The stator assembly structure according to any one of claims 1 to 4, wherein the stator assembly further comprises a stator winding, the stator winding comprising one or more coils, wherein each of the coils corresponds to a pair Connecting the pin, the coil includes a slot line and two outlet ends, the slot line is wound on a corresponding iron core column in the stator core, and the two outlet ends are respectively corresponding to the The connecting pin is wound around and taken out.
The stator assembly structure according to claim 5, wherein the connecting portions of the two outgoing ends of the coil and the corresponding connecting pins are further covered with a conductive layer.
The stator assembly structure according to claim 5, wherein the entire surface of the stator assembly is further covered with another insulating layer.
The stator assembly structure according to claim 1, wherein a gap is formed between the insulating layer and the transit circuit board.
The stator assembly structure according to claim 1, wherein the stator assembly structure further comprises a base, and the adapter circuit board is fixed to the base.
An electric machine, comprising: a rotor structure and a stator assembly structure, wherein the rotor structure and the stator assembly structure are cooperatively disposed;

The stator assembly structure includes a stator assembly and a transit circuit board coupled to the stator assembly;

Wherein the stator assembly includes a stator core and an insulating layer coated on a surface of the stator core, and the insulating layer and the transit circuit board are connected by a plurality of connecting pins.
The motor according to claim 10, wherein said insulating layer is a plastic structure.
The motor according to claim 10, wherein said insulating layer extends outwardly along an axial direction of said stator core to form a seat body for supporting said stator core, and said base body is provided with a plurality of pins The connecting end surface of the transit circuit board is correspondingly provided with a plurality of connecting holes;

One end of the connecting pin is inserted into the pin portion, and the other end is fixed through the connecting hole.
The motor according to claim 12, wherein said pin portion is a pin post extending outward from a connecting end surface of said base body; or

The pin portion is a pin slot recessed inward from a connecting end of the base body; or

The pin portion is a pin post provided in a circumferential direction of the base body.
The electric machine according to any one of claims 10 to 13, wherein the stator assembly further comprises a stator winding, the stator winding comprising one or more coils, wherein each of the coils corresponds to a pair of said Connecting a pin, the coil includes a slot line and two outlet ends, the slot line is wound around a corresponding core leg of the stator core, and the two outlet ends are respectively inserted in the corresponding connection The needle is wound around and taken out.
The motor according to claim 14, wherein the connecting portions of the two outgoing ends of the coil and the corresponding connecting pins are further covered with a conductive layer.
The electric machine according to claim 14, wherein the entire surface of the stator assembly is further covered with another insulating layer.
The motor according to claim 10, wherein said insulating layer and said transit circuit board have a certain gap therebetween.
The electric machine according to claim 10, wherein said stator assembly structure further comprises a base, and said transit circuit board is fixed to said base.
The motor according to claim 10, wherein the adapter circuit board is provided with a limiting portion, and one end of the insulating layer connected to the transit circuit board is provided with a limiting member through the limiting member The cooperation with the limiting portion realizes the positioning and docking of the connecting pin and the transit circuit board.
A power kit, characterized in that the power kit comprises a motor and a propeller, the motor drives the propeller to rotate, the motor comprises a rotor structure and a stator assembly structure; the rotor structure and the stator assembly structure are arranged ;

The stator assembly structure includes a stator assembly and a transit circuit board coupled to the stator assembly;

Wherein the stator assembly includes a stator core and an insulating layer coated on a surface of the stator core, and the insulating layer and the transit circuit board are connected by a plurality of connecting pins.
A power kit according to claim 20, wherein said insulating layer is a plastic structure.
The power kit according to claim 20, wherein the insulating layer extends outward in the axial direction of the stator core to form a seat body to support the stator core, and the seat body is provided with a plurality of plugs. a connecting portion of the connecting circuit board corresponding to the plurality of connecting holes;

One end of the connecting pin is inserted into the pin portion, and the other end is fixed through the connecting hole.
A power kit according to claim 22, wherein said pin portion is a pin post extending outward from a connecting end surface of said seat body; or

The pin portion is a pin slot recessed inward from a connecting end of the base body; or

The pin portion is a pin post provided in a circumferential direction of the base body.
A power kit according to any one of claims 20 to 23, wherein said stator assembly further comprises a stator winding, said stator winding comprising one or more coils, wherein each of said coils corresponds to a pair a connecting pin, the coil includes a slot line and two outlet ends, the slot line is wound on a corresponding iron core column in the stator core, and the two outlet ends are respectively corresponding to the connection The pin is wound around and taken out.
The power kit according to claim 24, wherein the two outlet ends of the coil and the corresponding portion of the connecting pin are further covered with a conductive layer.
A power kit according to claim 24, wherein the integral surface of the stator assembly is further covered with another insulating layer.
A power kit according to claim 20, wherein said insulating layer and said transit circuit board have a certain gap therebetween.
A power kit according to claim 20, wherein said stator assembly structure further comprises a base, and said adapter circuit board is fixed to said base.
An unmanned aerial vehicle comprising a fuselage, a plurality of arms extending outward from the fuselage, and a power kit disposed on the arm, wherein the power unit includes a motor and a propeller The motor drives the propeller to rotate, the electric machine includes a rotor structure and a stator assembly structure, and the rotor structure and the stator assembly structure are cooperatively disposed;

The stator assembly structure includes a stator assembly and a transit circuit board coupled to the stator assembly;

Wherein the stator assembly includes a stator core and an insulating layer coated on a surface of the stator core, and the insulating layer and the transit circuit board are connected by a plurality of connecting pins.
The UAV according to claim 29, wherein said insulating layer is a plastic structure.
The UAV according to claim 29, wherein the insulating layer extends outwardly along the axial direction of the stator core to form a seat body to support the stator core, and the seat body is provided with a plurality of a pin portion, the connecting end surface of the transit circuit board is correspondingly provided with a plurality of connecting holes;

One end of the connecting pin is inserted into the pin portion, and the other end is fixed through the connecting hole.
The UAV according to claim 31, wherein said pin portion is a pin post extending outward from a connecting end surface of said seat body; or

The pin portion is a pin slot recessed inward from a connecting end of the base body; or

The pin portion is a pin post provided in a circumferential direction of the base body.
An unmanned aerial vehicle according to any one of claims 29 to 32, wherein said stator assembly further comprises a stator winding, said stator winding comprising one or more coils, wherein each of said coils corresponds to a pair Connecting the pin, the coil includes a slot line and two outlet ends, the slot line is wound on a corresponding iron core column in the stator core, and the two outlet ends are respectively corresponding to the The connecting pin is wound around and taken out.
The UAV according to claim 33, wherein the connecting portions of the two outgoing ends of the coil and the corresponding connecting pins are further covered with a conductive layer.
The UAV according to claim 34, wherein the entire surface of the stator assembly is further covered with another insulating layer.
The UAV according to claim 29, wherein said insulating layer and said transit circuit board have a certain gap therebetween.
The UAV according to claim 29, wherein said stator assembly structure further comprises a base, and said transit circuit board is fixed to said base.
A method of manufacturing a stator assembly structure, characterized in that the manufacturing method comprises:

Providing a certain sub-core, a circuit adapter board and a plurality of connection pins;

Coating an insulating layer on the stator core;

The insulating layer and the circuit adapter plate are connected by the plurality of connection pins.
The manufacturing method according to claim 38, wherein the insulating layer is a plastic structure, and the step of coating an insulating layer on the stator core includes a step of injection molding.
The manufacturing method according to claim 38, wherein the step of coating an insulating layer on the stator core further comprises extending the insulating layer outward in an axial direction of the stator core to form a support A step of the stator core, and a plurality of pin portions are provided on the base.
The manufacturing method according to claim 40, wherein said step of connecting said insulating layer and said circuit adapter plate through said plurality of connection pins comprises connecting one end of said connection pin The step of inserting the pin portion and passing the other end through a connection hole formed in the adapter circuit board and performing soldering.
The manufacturing method according to claim 38, wherein a finite portion is disposed on the transit circuit board, and a limiting portion is disposed on the insulating layer;

The step of connecting the insulating layer and the circuit adapter board through the plurality of connection pins includes assembling the limiting member to the limiting portion to realize the connecting pin and the The step of positioning and docking the transit circuit board.
The manufacturing method according to claim 38, further comprising providing a certain sub-winding, said stator winding comprising one or more coils, each of said coils comprising a slot line and two outlet ends;

The slot line is wound around a corresponding one of the stator cores, and the two outlet ends are respectively wound around the corresponding connecting pins and taken out.
The method according to claim 43, further comprising: coating the conductive layer on the contact portion of the two outgoing ends with the corresponding connecting pin.
The manufacturing method according to claim 38, further comprising: coating another insulating layer on the entire surface of the stator assembly.
The manufacturing method according to claim 38, further comprising providing a base for fixing said adapter circuit board to said base.