Stator assembly, motor and manufacturing method of stator assembly

Abstract

The invention discloses a stator assembly, a motor and a manufacturing method of the stator assembly. The stator assembly comprises a stator main body, a plurality of contact pins and sealant, the stator main body comprises a stator tooth part, an insulating component, a stator winding and a stator yoke part, the stator tooth part comprises a gear ring and a plurality of tooth parts arranged on the outer side of the gear ring, the stator tooth part is arranged on the insulating component, the stator winding is wound on the insulating component by adopting an insulating aluminum core wire, and the sealant is arranged on the stator winding. The stator yoke part is sleeved on the stator tooth part and the insulating member; the plurality of contact pins are arranged on the insulating component, and the wire head and the wire tail of each insulating aluminum core wire are respectively connected to one contact pin, so that a connecting part is formed on the contact pin; and the sealant wraps the connecting part to form a sealing layer. According to the invention, the risks of stator wire breakage and poor contact caused by oxidation of the stator assembly can be reduced, and the manufacturability of the stator assembly is improved, so that the stator assembly is suitable for automatic equipment production.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly to a stator assembly, a motor, and a manufacturing method of the stator assembly. Background Art

[0002] When assembling the stator assembly of the existing motor, manual wiring or piercing terminals are usually used to fix the winding. As a result, the production process of the stator assembly is complex, the production efficiency of the stator assembly is low, the manufacturability is poor, and it is not suitable for production by automated equipment. Summary of the Invention

[0003] The main object of the present invention is to provide a stator assembly, a motor, and a manufacturing method of the stator assembly, aiming to reduce the risk of stator wire breakage and poor contact caused by oxidation of the stator assembly, improve the manufacturability of the stator assembly, and make the stator assembly suitable for production by automated equipment.

[0004] To achieve the above object, the present invention provides a stator assembly, including:

[0005] A stator body, including a stator tooth portion, an insulating member, a stator winding, and a stator yoke portion. The stator tooth portion includes a tooth ring and a plurality of tooth portions provided on the outer side of the tooth ring. The stator tooth portion is provided on the insulating member. The stator winding is wound around the insulating member with an insulated aluminum core wire. The stator yoke portion is sleeved on the stator tooth portion and the insulating member;

[0006] A plurality of pins, provided on the insulating member. The head and tail of each insulated aluminum core wire are respectively connected to one of the pins to form a connection portion on the pin; and

[0007] A sealant, wrapping the connection portion to form a sealing layer.

[0008] In one embodiment, the sealant is a photosensitive adhesive.

[0009] In one embodiment, the head and tail of the insulated aluminum core wire are respectively welded to one of the pins to form a solder joint on the pin, and the photosensitive adhesive is dropped and wrapped around the solder joint.

[0010] In one embodiment, the insulating member includes an annularly arranged enclosing member and a plurality of winding portions provided on the outer side of the enclosing member. An installation table is provided on the enclosing member. A bearing surface for carrying the sealant is provided on the installation table, and a plugging hole for inserting the pin is provided on the bearing surface.

[0011] In one embodiment, the number of the installation tables is multiple, and the multiple installation tables are provided on the inner peripheral wall of the enclosing member and are arranged at intervals in sequence and adjacent to each other;

[0012] And / or, a plurality of protrusions extending axially outward along the tooth ring are provided at the end of the enclosure member, and the plurality of protrusions are arranged at intervals in sequence around the circumference of the enclosure member.

[0013] In one embodiment, a main wire passing groove is provided on the insulating member between two adjacent winding portions. The plurality of winding portions include a plurality of main winding teeth arranged at intervals in sequence. The stator winding includes a main phase winding, and the main phase winding is wound around the plurality of main winding teeth in sequence, bypasses the outer side of the enclosure member, and is sequentially limited in the plurality of main wire passing grooves.

[0014] In one embodiment, a main wire passing portion is provided on the outer peripheral wall of the enclosure member near one end of the pin. The main wire passing portion is provided between two adjacent winding portions, and a main wire passing groove is formed by enclosing between the main wire passing portion and the enclosure member.

[0015] In one embodiment, the plurality of winding portions further include a plurality of auxiliary winding teeth. The plurality of main winding teeth and the plurality of auxiliary winding teeth are alternately arranged at intervals along the outer peripheral wall of the enclosure member. An auxiliary wire passing groove is provided on the insulating member between the adjacent main winding teeth and auxiliary winding teeth. The stator winding further includes at least one auxiliary phase winding, and the auxiliary phase winding is wound around the plurality of auxiliary winding teeth in sequence, bypasses the outer side of the enclosure member, and is sequentially limited in the plurality of auxiliary wire passing grooves.

[0016] In one embodiment, an auxiliary wire passing portion is further provided on the outer peripheral wall of the enclosure member. The auxiliary wire passing portion and the main wire passing portion are respectively provided at opposite ends of the enclosure member along its axis. The auxiliary wire passing portion is provided between the adjacent main winding teeth and auxiliary winding teeth, and an auxiliary wire passing groove is formed by enclosing between the auxiliary wire passing portion and the enclosure member.

[0017] In one embodiment, the insulating member includes an upper frame and a lower frame respectively arranged in a ring shape. The upper frame and the lower frame are butted, and a plurality of winding portions are formed by combining the upper frame and the lower frame. A stator tooth receiving groove and a wire winding groove are formed on each winding portion. The stator tooth receiving groove is formed at the butting portion of the upper frame and the lower frame and extends along the radial direction of the insulating member. The wire winding groove is arranged in a direction surrounding the stator tooth receiving groove, and the stator tooth receiving groove and the wire winding groove are arranged at intervals.

[0018] The present invention also provides a motor, which includes the stator assembly as described above.

[0019] The present invention also provides a manufacturing method of a stator assembly, including the following steps:

[0020] Prepare a stator tooth part, an insulating member, a stator winding, a stator yoke, a plurality of pins and a sealant. The stator tooth part includes a tooth ring and a plurality of tooth parts arranged outside the tooth ring, and the stator yoke is arranged in a ring shape;

[0021] Mount the stator tooth part on the insulating member;

[0022] Mount a plurality of pins on the insulating member;

[0023] Wind the stator winding around the insulating member. The stator winding includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound around a pin;

[0024] Weld the insulated aluminum core wire to the pin to form a solder joint on the pin;

[0025] Drop or coat the sealant at the solder joint to form a sealing layer on the solder joint;

[0026] Insert the assembled stator tooth part and insulating member into the stator yoke.

[0027] In one embodiment, the step of dropping or coating the sealant at the solder joint to form a sealing layer on the solder joint includes:

[0028] The sealant is a photosensitive adhesive;

[0029] Drop or coat the photosensitive adhesive at the solder joint;

[0030] Irradiate the photosensitive adhesive at the solder joint with ultraviolet light. The photosensitive adhesive cures and wraps the solder joint to form a sealing layer.

[0031] In one embodiment, the step of winding the stator winding around the insulating member, where the stator winding includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound around a pin, includes:

[0032] The insulating member has a plurality of main winding teeth arranged at intervals, and a main wire groove is provided between two adjacent main winding teeth; at the end of the insulating member, a main head pin and a main tail pin are arranged at intervals; the stator winding includes a main insulated aluminum core wire;

[0033] Wind the head of the main insulated aluminum core wire around the main head pin;

[0034] Wind the main insulated aluminum core wire around a plurality of main winding teeth in sequence and limit it in a plurality of main wire grooves in sequence;

[0035] Wind the tail of the main insulated aluminum core wire around the main tail pin to form a main phase winding.

[0036] In one embodiment, the step of winding the stator winding on the insulating member, where the stator winding includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound on a pin, further includes:

[0037] The insulating member has a plurality of secondary winding teeth arranged at intervals, and the plurality of secondary winding teeth and the plurality of primary winding teeth are alternately arranged at intervals in sequence. A secondary wire groove is provided between adjacent primary winding teeth and secondary winding teeth; at the end of the insulating member, a first secondary wire pin and a second secondary wire pin are provided at intervals; the stator winding further includes a first insulated aluminum core wire;

[0038] Wind the head of the first insulated aluminum core wire on the first secondary wire pin;

[0039] Wind the first insulated aluminum core wire on the plurality of secondary winding teeth in sequence and limit it in the plurality of secondary wire grooves in sequence;

[0040] Wind the tail of the first insulated aluminum core wire on the second secondary wire pin to form a first secondary phase winding.

[0041] In one embodiment, the step of winding the stator winding on the insulating member, where the stator winding includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound on a pin, further includes:

[0042] At the end of the insulating member, a third secondary wire pin is provided at an interval from the second secondary wire pin; the stator winding further includes a second insulated aluminum core wire;

[0043] Wind the head of the second insulated aluminum core wire on the second secondary wire pin, and the second secondary phase winding is connected to the first secondary phase winding through the second secondary wire pin;

[0044] Wind the second insulated aluminum core wire on the plurality of secondary winding teeth in sequence and limit it in the plurality of secondary wire grooves in sequence;

[0045] Wind the tail of the second insulated aluminum core wire on the third secondary wire pin to form a second secondary phase winding.

[0046] In one embodiment, the step of winding the stator winding on the insulating member, where the stator winding includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound on a pin, further includes:

[0047] At the end of the insulating member, a fourth secondary wire pin is provided at an interval from the third secondary wire pin; the stator winding further includes a third insulated aluminum core wire;

[0048] Wind the head of the third insulated aluminum core wire on the third secondary wire pin, and the third secondary phase winding is connected to the second secondary phase winding through the third secondary wire pin;

[0049] Wind the third insulated aluminum core wire around a plurality of secondary winding teeth in sequence and limit it in a plurality of secondary wire grooves in sequence;

[0050] Wind the tail of the third insulated aluminum core wire around the fourth secondary wire pin to form a third secondary phase winding.

[0051] In one embodiment, the main wire head pin, the fourth secondary wire pin, the third secondary wire pin, the second secondary wire pin, the first secondary wire pin, and the main wire tail pin are arranged at intervals in sequence along the circumferential direction of the insulating member and are adjacent to each other.

[0052] The stator assembly of the present invention includes a stator body, a plurality of pins, and a sealant. The stator body includes a stator tooth part, an insulating member, a stator winding, and a stator yoke part. The stator tooth part includes a tooth ring and a plurality of tooth parts. The stator tooth part is arranged on the insulating member. The stator winding is wound on the insulating member by using an insulated aluminum core wire. The plurality of tooth parts are arranged on the outer side of the tooth ring, so that it is convenient for an automated device to wind the stator winding on the insulating member; using an insulated aluminum core wire to manufacture the stator winding is beneficial to reducing the production cost of the stator assembly; the stator yoke part is sleeved on the stator tooth part and the insulating member, so that it is convenient for an automated device to install the assembled stator tooth part and insulating member after winding into the stator yoke part, which is beneficial to improving the production efficiency of the stator assembly; and, the head and tail of each insulated aluminum core wire are respectively connected to a pin to form a connection part on the pin, and the connection part is wrapped with a sealant to form a sealing layer, so that it is convenient for an automated device to complete the actions of dripping glue or coating the sealant, thereby making the stator assembly of the present application highly manufacturable, suitable for production by automated devices, and at the same time reducing the risks of stator wire breakage and poor contact caused by oxidation of the stator assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0054] Figure 1 It is a schematic structural diagram of an embodiment of the stator assembly of the present invention;

[0055] Figure 2 It is Figure 1 a schematic structural diagram of the decomposed partial structure in;

[0056] Figure 3 It is Figure 2 a schematic structural diagram of the partial structure in;

[0057] Figure 4is Figure 3 The enlarged view of part A in

[0058] Figure 5 is Figure 3 The structural schematic diagram after the structure in is decomposed;

[0059] Figure 6 is Figure 3 The structural schematic diagram of another perspective of the structure in ;

[0060] Figure 7 is Figure 1 The structural schematic diagram of part of the structure in ;

[0061] Figure 8 is Figure 7 The enlarged view of part B in ;

[0062] Figure 9 is Figure 7 The winding schematic diagram of the main phase winding in ;

[0063] Figure 10 is Figure 7 The winding schematic diagram of the first auxiliary phase winding in ;

[0064] Figure 11 is Figure 7 The winding schematic diagram of the second auxiliary phase winding in ;

[0065] Figure 12 is Figure 7 The winding schematic diagram of the third auxiliary phase winding in .

[0066] Explanation of the reference numerals in the drawings:

[0067] Label Name Label Name 10 Stator tooth part 204 Winding slot 11 Tooth ring 30 Stator winding 12 Tooth part 31 Main phase winding 20 Insulating member 32 Auxiliary phase winding 21 Enclosure part 321 First auxiliary phase winding 22 Winding part 322 Second auxiliary phase winding 221 Main winding tooth 323 Third auxiliary phase winding 222 Auxiliary winding tooth 40 Stator yoke part 23 Mounting table 41 Positioning groove 231 Bearing surface 50 Pin 232 Insertion hole 51 Main wire head pin 24 Main wire passing groove 52 Main wire tail pin 25 Main wire passing part 53 First auxiliary wire pin 26 Auxiliary wire passing groove 54 Second auxiliary wire pin 27 Auxiliary wire passing part 55 Third auxiliary wire pin 201 Upper frame 56 Fourth auxiliary wire pin 202 Lower frame 60 Sealing glue 203 Stator tooth receiving groove

[0068] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0069] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0070] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0071] In addition, if the embodiments of the present invention involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0072] The present invention provides a stator assembly, aiming to improve the manufacturability of the stator assembly so that the stator assembly is suitable for production by automated equipment.

[0073] Please refer to Figures 1 to 3 , in an embodiment of the stator assembly of the present invention, the stator assembly includes a stator body, a plurality of pins 50, and a sealant 60. The stator body includes a stator tooth portion 10, an insulating member 20, a stator winding 30, and a stator yoke portion 40. The stator tooth portion 10 includes a tooth ring 11 and a plurality of tooth portions 12 provided outside the tooth ring 11. The stator tooth portion 10 is provided on the insulating member 20. The stator winding 30 is wound around the insulating member 20 with insulated aluminum core wires. The stator yoke portion 40 is sleeved on the stator tooth portion 10 and the insulating member 20. A plurality of pins 50 are provided on the insulating member 20. The head and tail of each insulated aluminum core wire are respectively connected to one of the pins 50 to form a connection portion on the pins 50. The sealant 60 wraps the connection portion to form a sealing layer.

[0074] It can be understood that the stator tooth portion 10 includes a tooth ring 11 and a plurality of tooth portions 12. The stator tooth portion 10 is provided on the insulating member 20. The insulating member 20 is provided with a plurality of stator tooth receiving grooves 203 corresponding to the plurality of tooth portions 12 to facilitate the installation of the stator tooth portion 10 on the insulating member 20. The stator tooth portion 10 can be installed on the insulating member 20 to form a detachable assembly. Of course, the stator tooth portion 10 and the insulating member 20 can also be integrally injection molded. The integrally injection molded structure has good structural stability and further facilitates the assembly of the stator assembly and the motor.

[0075] Further, a plurality of tooth portions 12 are arranged at intervals in sequence on the outer side of the tooth ring 11. After the stator tooth portions 10 are provided on the insulating member 20, the stator winding 30 is wound around the insulating member 20 by using an insulated aluminum core wire. The position where the insulated aluminum core wire is wound around the insulating member 20 is correspondingly set with the positions of the plurality of tooth portions 12, and the insulating member 20 separates the tooth portions 12 from the insulated aluminum core wire. The insulated aluminum core wire includes an aluminum core wire and an insulating layer wrapped around the aluminum core wire. Compared with a copper wire, the cost of a copper wire is higher, and the present application uses an insulated aluminum core wire, which is beneficial to reducing the production cost of the stator assembly.

[0076] Further, the stator yoke portion 40 is sleeved on the stator tooth portions 10 and the insulating member 20. The stator yoke portion 40 and the stator tooth portions 10 adopt a separable structure. When manufacturing the stator assembly, after the insulated aluminum core wire is wound around the assembly of the insulating member 20 and the stator tooth portions 10, the stator yoke portion 40 is assembled, so as to facilitate the winding of the insulated aluminum core wire. In this way, it is convenient for an automatic device to wind the wire, which is beneficial to improving the winding efficiency and the manufacturability of the stator assembly.

[0077] Further, a plurality of pins 50 can be provided at one end of the insulating member 20 along its axial direction. Of course, they can also be provided at the opposite ends of the insulating member 20 along its axial direction, and can be specifically set according to needs. In this embodiment, the plurality of pins 50 are provided at one end of the insulating member 20 along its axial direction and are arranged at intervals in sequence, so as to facilitate wiring with a wiring board or directly with a lead wire. The wiring board is a PCB board, and the PCB board welded with the lead wire can be welded together with the plurality of pins 50, which is beneficial to improving the assembly efficiency of the motor.

[0078] Further, the head and tail of each insulated aluminum core wire are respectively connected to a pin 50 to form a connection portion on the pin 50, that is, the head of each insulated aluminum core wire is connected to a pin 50, the tail of each insulated aluminum core wire is connected to a pin 50, and the head and tail of each insulated aluminum core wire respectively form connection portions on different pins 50. Then, the connection portion is wrapped with a sealant 60, and the sealant 60 forms a sealing layer on the connection portion. When the insulated aluminum core wire is connected to the pin 50 by welding, the sealing layer can prevent the solder joints of the aluminum core wire and the pin 50 from being oxidized and causing wire breakage, thereby improving the reliability of the stator assembly. That is to say, the head and tail of each said insulated aluminum core wire are respectively welded to a said pin 50 to form solder joints on the said pin 50. With such a setting, it can prevent the solder joints from being oxidized and causing wire breakage. In addition, when the insulated aluminum core wire is connected to the pin 50 by other methods, such as winding, clamping, etc., the sealant 60 also has the function of enhancing the connection firmness. The specific type of the sealant 60 is not limited, as long as it can form a sealing layer on the connection portion, for example, but not limited to: photosensitive glue, OCA optical glue, etc. Of course, the sealant 60 can also be a high-temperature resistant sealant 60.

[0079] The stator assembly of the present invention includes a stator body, a plurality of pins 50 and a sealant 60. The stator body includes a stator tooth portion 10, an insulating member 20, a stator winding 30 and a stator yoke portion 40. The stator tooth portion 10 includes a tooth ring 11 and a plurality of tooth portions 12. The stator tooth portion 10 is provided on the insulating member 20. The stator winding 30 is wound around the insulating member 20 with an insulated aluminum core wire. The plurality of tooth portions 12 are provided on the outer side of the tooth ring 11, so that it is convenient for automated equipment to wind the stator winding 30 around the insulating member 20. Using an insulated aluminum core wire to manufacture the stator winding 30 is beneficial to reducing the production cost of the stator assembly. The stator yoke portion 40 is sleeved on the stator tooth portion 10 and the insulating member 20, so that it is convenient for automated equipment to install the assembled stator tooth portion 10 and insulating member 20 after winding into the stator yoke portion 40, which is beneficial to improving the production efficiency of the stator assembly. And, the head and tail of each insulated aluminum core wire are respectively connected to a pin 50 to form a connection portion on the pin 50, and the connection portion is wrapped with a sealant 60 to form a sealing layer, so that it is convenient for automated equipment to complete the operation of dripping glue or applying the sealant 60. Thus, the stator assembly of the present application has high manufacturability, is suitable for production by automated equipment, and at the same time reduces the risks of stator wire breakage and poor contact caused by oxidation of the stator assembly.

[0080] In one embodiment, the sealant 60 is a photosensitive adhesive. It can be understood that a photosensitive adhesive is also known as an ultraviolet curable adhesive or a light-curing adhesive without shadow. A photosensitive adhesive is a type of adhesive that requires ultraviolet light irradiation to cure. The curing principle of a photosensitive adhesive is that the photoinitiator (or photosensitizer) in the ultraviolet curable material absorbs ultraviolet light and generates active free radicals or cations under ultraviolet light irradiation, triggering the polymerization and cross-linking chemical reactions of monomers, converting the adhesive from a liquid state to a solid state within a few seconds. Specifically, in this embodiment, the photosensitive adhesive is dropped on the connection part, and then the photosensitive adhesive on the connection part is irradiated with ultraviolet light, so that the photosensitive adhesive can be quickly cured on the connection part to form a sealing layer for protecting the connection part. This is beneficial to reducing the curing time of the sealant 60 and improving production efficiency.

[0081] In one embodiment, the head and the tail of the insulated aluminum core wire are respectively welded to one of the pins 50 to form solder joints on the pins 50, and the photosensitive adhesive is dropped and wraps the solder joints.

[0082] It can be understood that welding the head and the tail of the insulated aluminum core wire to one pin 50 respectively is beneficial to improving the connection stability between the insulated aluminum core wire and the pin 50. Moreover, when the photosensitive adhesive is dropped on the solder joints and cured, the solder joints are wrapped to form a sealing layer on the solder joints, so as to prevent the solder joints from being exposed and oxidized, and the situation of disconnection between the insulated aluminum core wire and the pin 50 from occurring. Thus, it can be seen that this solution uses a photosensitive adhesive to protect the solder joints between the insulated aluminum core wire and the pin 50, improving the stability of the stator assembly.

[0083] Please refer to Figure 3 and Figure 4 , in one embodiment, the insulating member 20 includes a surrounding member 21 arranged in a ring shape and a plurality of winding parts 22 arranged outside the surrounding member 21. An installation table 23 is provided on the surrounding member 21. A bearing surface 231 for bearing the sealant 60 is provided on the installation table 23, and a plug hole 232 for inserting the pin 50 is provided on the bearing surface 231.

[0084] It can be understood that the enclosure member 21 is arranged in a ring shape, and an accommodating cavity is formed inside the enclosure member 21 for accommodating the rotating shaft; a plurality of winding parts 22 are arranged on the outer peripheral wall of the enclosure member 21 and are sequentially arranged at intervals along its circumferential direction, and the winding parts 22 are used for winding the insulated aluminum core wire thereon. The installation platform 23 can be arranged at the end of the enclosure member 21, and of course, it can also be located inside or outside the enclosure member 21, and can be specifically set according to needs. A bearing surface 231 is provided on the installation platform 23, and a plug hole 232 is provided on the bearing surface 231. The plug hole 232 is arranged in the middle of the bearing surface 231. The plug pin 50 is inserted into the plug hole 232, and a connecting part is formed on the plug pin 50. The downward projection of the connecting part falls on the bearing surface 231. When the sealant 60 is dropped on the connecting part, the bearing surface 231 can carry the sealant 60 to provide a glue dropping space for the sealant 60. The glue dropping space formed by the bearing surface 231 is sufficient to carry the sealant 60, avoiding the situation that the sealant 60 flows outside the plug pin platform before curing due to the too small plug pin platform for installing the plug pin 50, thereby improving the sealing stability of the sealant 60 to the connecting part. The bearing surface 231 can be a flat surface, and of course, it can also be an arc surface, such as an arc surface arranged in a concave shape, etc., and can be specifically set according to needs.

[0085] Please refer to Figures 3 to 6 , in an embodiment, the number of the installation platforms 23 is multiple, and the multiple installation platforms 23 are arranged on the inner peripheral wall of the enclosure member 21 and are sequentially arranged at intervals and are adjacent to each other.

[0086] It can be understood that the number of the installation platforms 23 is multiple, and a bearing surface 231 and a plug hole 232 can be provided on each installation platform 23. The multiple plug pins 50 are sequentially inserted into the multiple plug holes 232 on the multiple installation platforms 23. The installation platform 23 is arranged on the inner peripheral wall of the enclosure member 21, and the bearing surface 231 of the installation platform 23 can be flush with the end surface of one end of the enclosure member 21, that is, the bearing surface 231 is flush with the end surface of the enclosure member 21, so as to provide a larger glue dropping space for the sealant 60. The multiple installation platforms 23 are sequentially arranged at intervals and are adjacent to each other, that is, there is a certain interval space between adjacent installation platforms 23, but the interval distance is within a preset range. The multiple installation platforms 23 are gathered together. The connection line length between the multiple installation platforms 23 in this solution is less than half of the circumferential arc length of the enclosure member 21 arranged in a ring shape, that is, the multiple installation platforms 23 are arranged on one side of the straight line in the radial direction of the enclosure member 21 arranged in a ring shape. In this way, the distance between the multiple installation platforms 23 is relatively close, and the distance between the multiple plug pins 50 inserted on the installation platforms 23 is also relatively close. When the multiple plug pins 50 are welded to the PCB board, it is beneficial to reduce the size of the PCB board; when the multiple plug pins 50 are welded to the multiple lead-out wires, it is beneficial to gather the multiple lead-out wires together to reduce the space occupied by the multiple lead-out wires. It can be seen that the multiple installation platforms 23 in this solution are gathered together, which is beneficial to realizing the miniaturization of the motor.

[0087] In one embodiment, a plurality of protrusions extending axially outward along the tooth ring 11 are provided at the end of the enclosure member 21, and the plurality of protrusions are arranged at intervals in sequence around the circumferential direction of the enclosure member 21. With such an arrangement, not only the height of the enclosure member 21 is increased, so that the enclosure member 21 can completely isolate the stator winding 30 outside the enclosure member 21, avoiding contact between the stator winding 30 and the rotor inside the enclosure member 21, but also the structural strength of the enclosure member 21 is increased.

[0088] Please refer to Figure 3 、 Figure 4 、 Figures 7 to 9 , in one embodiment, a main wire groove 24 is provided on the insulating member 20 between two adjacent winding parts 22. The plurality of winding parts 22 include a plurality of main winding teeth 221 arranged at intervals in sequence. The stator winding 30 includes a main phase winding 31. The main phase winding 31 is wound around the plurality of main winding teeth 221 in sequence, bypasses the outside of the enclosure member 21 and is limited in the plurality of main wire grooves 24 in sequence.

[0089] It can be understood that the plurality of main winding teeth 221 are arranged at intervals on the outer peripheral wall of the enclosure member 21, and the insulated aluminum core wires are wound around the plurality of main winding teeth 221 in sequence to form the main phase winding 31. The insulated aluminum core wires between two adjacent main winding teeth 221 bypass the outside of the enclosure member 21 and are limited in the main wire groove 24. That is to say, the main wire groove 24 is used to limit a single insulated aluminum core wire between two adjacent main winding teeth 221, so as to avoid loosening of the insulated aluminum core wires of the main phase winding 31 and contact with the insulated aluminum core wires of other different phases, avoiding the occurrence of phase-to-phase breakdown and improving the reliability of the stator assembly. In addition, at least two main wire grooves 24 are provided between two adjacent main winding teeth 221, so that the stability of limiting the insulated aluminum core wires of the main phase winding 31 can be improved.

[0090] In one embodiment, a main wire passing part 25 is provided on the outer peripheral wall of the enclosure member 21 near one end of the pin 50. The main wire passing part 25 is arranged between two adjacent winding parts 22, and the main wire passing part 25 and the enclosure member 21 enclose to form the main wire groove 24.

[0091] It can be understood that a main wire passing groove 24 is formed by enclosing between the main wire passing part 25 and the enclosure member 21. The main wire passing part 25 can be hook-shaped. The hook-shaped main wire passing part 25 and the outer peripheral wall of the enclosure jointly form the main wire passing groove 24 with an opening facing outwards. In this way, it is convenient for the insulated aluminum core wire to pass through and be limited in the main wire passing groove 24 when winding around the outer peripheral wall of the enclosure. The outer peripheral wall of the enclosure member 21 has the function of limiting the insulated aluminum core wire. In this way, it is beneficial to simplify the structure of the stator assembly. Moreover, the main wire passing part 25 is arranged between two adjacent winding parts 22. In this embodiment, the main wire passing part 25 is arranged in the middle of two adjacent winding parts 22, making the wire winding limiting positions of the insulated aluminum core wire more unified. In this way, it is beneficial to improve the consistency of the wire winding of the insulated aluminum core wire.

[0092] Please refer to Figures 5 to 8 、 Figures 10 to 12 In an embodiment, the plurality of winding parts 22 further include a plurality of auxiliary winding teeth 222. The plurality of main winding teeth 221 and the plurality of auxiliary winding teeth 222 are alternately arranged at intervals along the outer peripheral wall of the enclosure member 21. The insulating member 20 is provided with auxiliary wire passing grooves 26 located between adjacent main winding teeth 221 and auxiliary winding teeth 222. The stator winding 30 further includes at least one auxiliary phase winding 32. The auxiliary phase winding 32 is sequentially wound around the plurality of auxiliary winding teeth 222, and winds around the outside of the enclosure member 21 and is sequentially limited in the plurality of auxiliary wire passing grooves 26.

[0093] It can be understood that the number of the plurality of main winding teeth 221 is the same as that of the plurality of auxiliary winding teeth 222, and the plurality of main winding teeth 221 and the plurality of auxiliary winding teeth 222 are alternately arranged at intervals on the enclosure member 21. The stator winding 30 further includes at least one auxiliary phase winding 32. That is to say, the auxiliary phase winding 32 can be one, or two, or three. For example, the first auxiliary phase winding 321, the second auxiliary phase winding 322 and the third auxiliary phase winding 323 can be specifically set according to needs. The number of the auxiliary phase windings 32 determines the number of gears of the motor. Three auxiliary phase windings 32 enable the motor to have three gears, that is, the speed of the motor can be adjusted. In this way, it is beneficial to improve the applicability of the motor.

[0094] Furthermore, the insulated aluminum core wire is sequentially wound around the plurality of auxiliary winding teeth 222 to form the auxiliary phase winding 32. The insulated aluminum core wire between the adjacent main winding teeth 221 and auxiliary winding teeth 222 winds around the outside of the enclosure member 21 and is limited in the auxiliary wire passing groove 26. That is to say, the auxiliary wire passing groove 26 is used to limit a single insulated aluminum core wire between the adjacent main winding teeth 221 and auxiliary winding teeth 222, so as to prevent the insulated aluminum core wire of the auxiliary phase winding 32 from loosening and contacting the insulated aluminum core wire of the main phase winding 31, avoiding the occurrence of phase-to-phase breakdown and improving the reliability of the stator assembly.

[0095] In one embodiment, a secondary wire-passing portion 27 is further provided on the outer peripheral wall of the enclosure member 21. The secondary wire-passing portion 27 and the primary wire-passing portion 25 are respectively provided at opposite ends of the enclosure member 21 along its axial direction. The secondary wire-passing portion 27 is provided between the adjacent primary winding teeth 221 and secondary winding teeth 222. A secondary wire-passing groove 26 is formed by enclosing between the secondary wire-passing portion 27 and the enclosure member 21.

[0096] It can be understood that the primary wire-passing portion 25 can be provided at one end of the enclosure member 21 close to the pin 50, and the secondary wire-passing portion 27 is provided at one end of the enclosure member 21 far from the pin 50. Correspondingly, along the axial direction of the enclosure member 21, the primary wire-passing groove 24 is provided between the secondary wire-passing groove 26 and the pin 50, so as to facilitate winding and limiting of the primary-phase winding wire 31 and the secondary-phase winding wire 32.

[0097] Furthermore, a secondary wire-passing groove 26 is formed by enclosing between the secondary wire-passing portion 27 and the enclosure member 21. The secondary wire-passing portion 27 can be in a hook shape. The hook-shaped secondary wire-passing portion 27 and the outer peripheral wall of the enclosure jointly form a secondary wire-passing groove 26 with an outward opening. In this way, it is convenient for the insulated aluminum core wire to pass through and be limited in the secondary wire-passing groove 26 when winding around the outer peripheral wall of the enclosure. The outer peripheral wall of the enclosure member 21 has the function of limiting the insulated aluminum core wire, which is beneficial to simplifying the structure of the stator assembly. Moreover, the secondary wire-passing portion 27 is provided between the adjacent primary winding teeth 221 and secondary winding teeth 222. In this embodiment, the secondary wire-passing portion 27 is provided in the middle of the adjacent primary winding teeth 221 and secondary winding teeth 222, so that the winding limit positions of the insulated aluminum core wire are more unified, which is beneficial to improving the consistency of the winding of the insulated aluminum core wire.

[0098] In one embodiment, a primary avoidance groove corresponding to the primary wire-passing portion 25 is provided on the outer peripheral wall of the enclosure member 21. The primary avoidance groove is communicated with the primary wire-passing groove 24, and the groove wall of the primary avoidance groove is used for carrying the insulated aluminum core wire of the primary-phase winding wire 31. By providing the primary avoidance groove, when the insulated aluminum core wire of the primary-phase winding wire 31 winds around the outer peripheral side of the enclosure member 21, it can be carried on the groove wall of the primary avoidance groove, avoiding the insulated aluminum core wire from being suspended, and improving the stability of the insulated aluminum core wire wound on the insulating member 20.

[0099] In one embodiment, a secondary avoidance groove corresponding to the secondary wire-passing portion 27 is provided on the outer peripheral wall of the enclosure member 21. The secondary avoidance groove is communicated with the secondary wire-passing groove 26. The secondary avoidance groove and the primary avoidance groove are respectively provided at opposite ends of the enclosure member 21 along its axial direction. The groove wall of the secondary avoidance groove is used for carrying the insulated aluminum core wire of the secondary-phase winding wire 32. By providing the secondary avoidance groove, when the insulated aluminum core wire of the secondary-phase winding wire 32 winds around the outer peripheral side of the enclosure member 21, it can be carried on the groove wall of the secondary avoidance groove, avoiding the insulated aluminum core wire from being suspended, and improving the stability of the insulated aluminum core wire wound on the insulating member 20.

[0100] Please refer to Figure 5 , in one embodiment, the insulating member 20 includes an upper frame 201 and a lower frame 202 that are respectively arranged in a ring shape. The upper frame 201 and the lower frame 202 are butt-jointed. The upper frame 201 and the lower frame 202 are combined to form a plurality of winding portions 22. Each winding portion 22 is formed with a stator tooth receiving groove 203 and a winding groove 204. The stator tooth receiving groove 203 is formed at the butt-joint of the upper frame 201 and the lower frame 202 and extends along the radial direction of the insulating member 20. The winding groove 204 is arranged along the direction surrounding the stator tooth receiving groove 203. The stator tooth receiving groove 203 and the winding groove 204 are arranged at intervals.

[0101] It can be understood that the upper frame 201 and the lower frame 202 are respectively arranged in a ring shape. The upper frame 201 and the lower frame 202 are clamped and fixed by butt-joint. One end of the upper frame 201 facing the lower frame 202 is provided with a first groove, and one end of the lower frame 202 facing the upper frame 201 is provided with a second groove. The first groove and the second groove enclose to form the stator tooth receiving groove 203. That is to say, when assembling the upper frame 201, the lower frame 202 and the stator tooth portion 10, a part of the tooth portion 12 is installed in the second groove, and then the upper frame 201 and the lower frame 202 are butted, so that the other part of the tooth portion 12 is accommodated in the first groove, thus completing the fixation of the stator tooth portion 10.

[0102] Furthermore, the upper frame 201 is provided with a first semi-circular groove, and the lower frame 202 is provided with a second semi-circular groove. The first semi-circular groove and the second semi-circular groove enclose to form the winding groove 204. The first semi-circular groove is arranged along the direction surrounding the first groove, and the second semi-circular groove is arranged along the direction surrounding the second groove. The winding groove 204 is used for winding the insulated aluminum core wire. The stator tooth receiving groove 203 and the winding groove 204 are arranged at intervals, so that the insulated aluminum core wire wound in the winding groove 204 is spaced from the tooth portion 12 in the stator tooth receiving groove 203. This assembly structure can separate the stator tooth portion 10 of the stator assembly from the stator yoke portion 40, so as to facilitate the winding of the stator assembly, that is, facilitate the winding of the stator assembly by automated equipment, which is beneficial to improving the manufacturability of the stator assembly and improving the production efficiency of the stator assembly.

[0103] Please refer to Figure 1 and Figure 2, in one embodiment, the tooth portion 12 protrudes outward from the outer peripheral wall of the insulating member 20 to form a convex portion. The stator yoke portion 40 is arranged in a ring shape, and a positioning groove 41 corresponding to the convex portion is provided on the inner peripheral wall of the stator yoke portion 40. The convex portion is clamped in the positioning groove 41. It can be understood that when the stator yoke portion 40 is sleeved on the stator tooth portion 10 and the insulating member 20 after winding, aligning the convex portion with the positioning groove 41 can ensure that the stator tooth portion 10 is smoothly and accurately pressed into the stator yoke portion 40, avoiding the occurrence of installation misalignment, which is beneficial to preventing misassembly of the stator assembly.

[0104] The present invention also provides a motor, which includes the aforementioned stator assembly. The specific structure of this stator assembly refers to the above embodiments. Since this motor adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0105] The present invention also provides a manufacturing method for a stator assembly, which includes the following steps:

[0106] Prepare the stator tooth portion 10, the insulating member 20, the stator winding 30, the stator yoke portion 40, a plurality of pins 50 and a sealant 60. The stator tooth portion 10 includes a tooth ring 11 and a plurality of tooth portions 12 arranged outside the tooth ring 11. The stator yoke portion 40 is arranged in a ring shape; wherein, the specific type of the sealant 60 is not limited, and it only needs to be able to form a sealing layer on the connection portion, such as but not limited to: photosensitive glue, OCA optical glue, etc. Of course, the sealant 60 can also be a high-temperature resistant sealant 60.

[0107] Install the stator tooth portion 10 on the insulating member 20;

[0108] Install a plurality of pins 50 on the insulating member 20;

[0109] Wind the stator winding 30 around the insulating member 20. The stator winding 30 includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound around a pin 50; wherein, the insulated aluminum core wire includes an aluminum core wire and an insulating layer wrapped around the aluminum core wire. Compared with copper wires, the cost of copper wires is higher, and the present application uses insulated aluminum core wires, which is beneficial to reducing the production cost of the stator assembly.

[0110] Weld the insulated aluminum core wire to the pin 50 to form a solder joint on the pin 50;

[0111] Drop or coat the sealant 60 on the solder joint to form a sealing layer on the solder joint;

[0112] Install the assembled stator tooth portion 10 and insulating member 20 into the stator yoke portion 40.

[0113] It can be understood that, according to the manufacturing method of the stator assembly of the embodiments of the present invention, a plurality of tooth portions 12 are provided on the outer side of the tooth ring 11, so that it is convenient for automated equipment to wind the stator winding 30 around the insulating member 20;

[0114] Manufacturing the stator winding 30 with insulated aluminum core wire is beneficial to reducing the production cost of the stator assembly;

[0115] Dropping or coating the sealant 60 at the solder joints of the insulated aluminum core wire and the pin 50 is beneficial to sealing and protecting the solder joints, and also facilitates the automated equipment to complete the operation of dropping or coating the sealant 60;

[0116] Putting the assembled stator tooth portion 10 and the insulating member 20 into the stator yoke portion 40 after winding, that is, the stator yoke portion 40 and the stator tooth portion 10 can be separately arranged, and the stator yoke portion 40 is assembled after the winding is completed, so that it is convenient to use automated equipment for production. Thus, it can be seen that the manufacturing method of the stator assembly of the present application is simple and easy for the automated equipment to complete the manufacturing process, that is, it is suitable for using automated equipment to complete the manufacturing of the stator assembly, so as to improve the manufacturing efficiency and reduce the manufacturing cost of the stator assembly.

[0117] In one embodiment, the step of dropping or coating the sealant 60 at the solder joints to form a sealing layer on the solder joints includes:

[0118] The sealant 60 is a photosensitive adhesive;

[0119] Dropping or coating the photosensitive adhesive at the solder joints;

[0120] Irradiating the photosensitive adhesive at the solder joints with ultraviolet light, and the photosensitive adhesive cures and wraps the solder joints to form a sealing layer.

[0121] It can be understood that the photosensitive adhesive is also called ultraviolet curable adhesive or invisible glue. The photosensitive adhesive is a kind of adhesive that needs to be irradiated by ultraviolet light to cure. The curing principle of the photosensitive adhesive is that the photoinitiator (or photosensitizer) in the ultraviolet curing material absorbs ultraviolet light and generates active free radicals or cations, triggering the polymerization and cross-linking chemical reactions of the monomers, so that the adhesive is transformed from a liquid state to a solid state within a few seconds. In this embodiment, irradiating the photosensitive adhesive at the solder joints with ultraviolet light enables the photosensitive adhesive to quickly cure on the solder joints to quickly form a sealing layer for protecting the solder joints. This is beneficial to reducing the curing time of the sealant 60 and improving the sealing stability, preventing the solder joints from being exposed and oxidized, and avoiding the occurrence of wire breakage between the insulated aluminum core wire and the pin 50, and improving the production efficiency and stability of the stator assembly.

[0122] Please refer to Figure 9, in one embodiment, the step of winding the stator winding 30 around the insulating member 20, where the stator winding 30 includes at least two insulated aluminum core wires, and the steps of winding the head and tail of each insulated aluminum core wire around a pin 50 respectively include:

[0123] The insulating member 20 has a plurality of main winding teeth 221 arranged at intervals, and a main wire groove 24 is provided between two adjacent main winding teeth 221; at the end of the insulating member 20, a main head pin 51 and a main tail pin 52 are arranged at intervals; the stator winding 30 includes a main insulated aluminum core wire;

[0124] Wind the head of the main insulated aluminum core wire around the main head pin 51;

[0125] Wind the main insulated aluminum core wire around the plurality of main winding teeth 221 in sequence and limit it in the plurality of main wire grooves 24 in sequence;

[0126] Wind the tail of the main insulated aluminum core wire around the main tail pin 52 to form a main phase winding 31.

[0127] It can be understood that the number of the plurality of main winding teeth 221 can be multiple, such as 2, 3, 4, 5, 6, etc., and is not specifically limited herein. In this embodiment, the number of the main winding teeth 221 is four, and the four main winding teeth 221 are numbered as C1, C3, C5, and C7 in sequence; there are 6 main wire grooves 24, which are D1, D2, D3, D4, D5, and D6 respectively. Now, the specific winding steps of the main insulated aluminum core wire are introduced (the clockwise direction and the counterclockwise direction hereinafter are the winding directions of the insulated aluminum core wire when facing the corresponding main winding teeth 221):

[0128] Wind the head of the main insulated aluminum core wire around the main head pin 51, then wind it counterclockwise on the main winding tooth C1, then pass through the main wire grooves D1 and D2 on the insulating frame in sequence, then wind it clockwise on the main winding tooth C3, then pass through the main wire grooves D3 and D4 on the insulating frame in sequence, then wind it counterclockwise on the main winding tooth C5, then pass through the main wire grooves D5 and D6 on the insulating frame in sequence, then wind it clockwise on the main winding tooth C7, and then wind the tail of the main insulated aluminum core wire around the main tail pin 52 to form a main phase winding 31. In this way, the winding of the main insulated aluminum core wire is completed. By using this method to wind the insulated aluminum core wire, the insulated aluminum core wire of the main phase winding 31 is prevented from loosening and contacting the insulated aluminum core wires of other different phases, avoiding the occurrence of phase-to-phase breakdown and improving the reliability of the stator assembly.

[0129] Please refer to Figure 10, in one embodiment, the step of winding the stator winding 30 around the insulating member 20, where the stator winding 30 includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound around a pin 50, further includes:

[0130] The insulating member 20 has a plurality of secondary winding teeth 222 arranged at intervals. The plurality of secondary winding teeth 222 and the plurality of primary winding teeth 221 are alternately arranged at intervals in sequence. A secondary wire groove 26 is provided between adjacent primary winding teeth 221 and secondary winding teeth 222; the end of the insulating member 20 is provided with a first secondary wire pin 53 and a second secondary wire pin 54 arranged at intervals; the stator winding 30 further includes a first insulated aluminum core wire;

[0131] Wind the head of the first insulated aluminum core wire around the first secondary wire pin 53;

[0132] Wind the first insulated aluminum core wire around the plurality of secondary winding teeth 222 in sequence and limit it in the plurality of secondary wire grooves 26 in sequence;

[0133] Wind the tail of the first insulated aluminum core wire around the second secondary wire pin 54 to form a first secondary phase winding 321.

[0134] It can be understood that the number of the plurality of secondary winding teeth 222 can be multiple, such as 2, 3, 4, 5, 6, etc., and is not specifically limited here. In this embodiment, the number of secondary winding teeth 222 is four, and the four secondary winding teeth 222 are numbered as C2, C4, C6, and C8 in sequence; there are 8 secondary wire grooves 26, which are E1, E2, E3, E4, E5, E6, E7, and E8 respectively. Now, the specific winding steps of the first insulated aluminum core wire are introduced (the clockwise direction and the counterclockwise direction hereinafter are the winding directions of the insulated aluminum core wire when facing the corresponding secondary winding teeth 222):

[0135] Wind the end of the first insulated aluminum core wire around the first auxiliary wire insertion pin 53, then wind the wire counterclockwise on the auxiliary winding tooth C8, then sequentially pass through the auxiliary wire grooves E8 and E1 on the insulating frame, and then wind the wire clockwise on the auxiliary winding tooth C2, then sequentially pass through the auxiliary wire grooves E2 and E3 on the insulating frame, and then wind the wire counterclockwise on the auxiliary winding tooth C4, then sequentially pass through the auxiliary wire grooves E4 and E5 on the insulating frame, and then wind the wire clockwise on the auxiliary winding tooth C6, then sequentially pass through the auxiliary wire grooves E6 and E7 on the insulating frame, and then wind around and pass through the auxiliary winding tooth C8, and then wind out from the wire groove 204 between the main winding tooth C1 and the auxiliary winding tooth C8, and then wind the end of the first insulated aluminum core wire around the second auxiliary wire insertion pin 54 to form the first auxiliary phase winding 321. In this way, the winding of the first insulated aluminum core wire is completed. By using this method to wind the insulated aluminum core wire, it is avoided that the insulated aluminum core wire of the first auxiliary phase winding 321 contacts the insulated aluminum core wire of the main phase winding 31, and the occurrence of phase-to-phase breakdown is avoided, thereby improving the reliability of the stator assembly.

[0136] In an embodiment, the main wire head insertion pin 51, the second auxiliary wire insertion pin 54, the first auxiliary wire insertion pin 53, and the main wire tail insertion pin 52 are sequentially arranged at intervals along the circumferential direction of the insulating member 20 and are adjacent to each other. It can be understood that the connection lengths between the main wire head insertion pin 51, the second auxiliary wire insertion pin 54, the first auxiliary wire insertion pin 53, and the main wire tail insertion pin 52 in this solution are less than half of the circumferential arc length of the tooth ring 11, that is, the main wire head insertion pin 51, the second auxiliary wire insertion pin 54, the first auxiliary wire insertion pin 53, and the main wire tail insertion pin 52 are arranged on one side of the straight line where the tooth ring 11 is located along its radial direction. With such an arrangement, the distances between the multiple insertion pins 50 are relatively close. When the multiple insertion pins 50 are welded to the PCB board, it is beneficial to reduce the size of the PCB board; when the multiple insertion pins 50 are welded to the multiple lead wires, it is beneficial for the multiple lead wires to gather together to reduce the space occupied by the multiple lead wires. Thus, it can be seen that this solution is beneficial to realizing the miniaturization of the motor.

[0137] Please refer to Figure 11 , in an embodiment, the step of winding the stator winding 30 on the insulating member 20, where the stator winding 30 includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound around an insertion pin 50 further includes:

[0138] The end of the insulating member 20 is provided with a third auxiliary wire insertion pin 55 that is spaced from the second auxiliary wire insertion pin 54; the stator winding 30 further includes a second insulated aluminum core wire;

[0139] Wind the head of the second insulated aluminum core wire around the second auxiliary wire insertion pin 54, and the second auxiliary phase winding 322 is connected to the first auxiliary phase winding 321 through the second auxiliary wire insertion pin 54;

[0140] The second insulated aluminum core wire is successively wound around a plurality of secondary winding teeth 222 and successively limited within a plurality of secondary wire grooves 26;

[0141] The wire tail of the second insulated aluminum core wire is wound around the third secondary wire pin 55 to form a second secondary phase winding 322.

[0142] It can be understood that the difference between the second secondary phase winding 322 formed in this embodiment and the aforementioned first secondary phase winding 321 is that the wire head of the first insulated aluminum core wire is wound around the first secondary wire pin 53, the wire tail of the first insulated aluminum core wire is wound around the second secondary wire pin 54, while the wire head of the second insulated aluminum core wire is wound around the second secondary wire pin 54, and the wire tail of the second insulated aluminum core wire is wound around the third secondary wire pin 55. That is to say, the wire tail of the first insulated aluminum core wire and the wire head of the second insulated aluminum core wire are both wound around the second secondary wire pin 54, so that the first insulated aluminum core wire and the second insulated aluminum core wire are connected, that is, the first secondary phase winding 321 and the second secondary phase winding 322 are connected through the second secondary wire pin 54. In this embodiment, by providing the first secondary phase winding 321 and the second secondary phase winding 322, the motor can have two speed regulation gears, that is, the speed of the motor can be regulated, which is beneficial to improving the applicability of the motor.

[0143] In one embodiment, the main wire head pin 51, the third secondary wire pin 55, the second secondary wire pin 54, the first secondary wire pin 53, and the main wire tail pin 52 are successively arranged at intervals along the circumferential direction of the insulating member 20 and are adjacent to each other. It can be understood that the connection lengths between the main wire head pin 51, the third secondary wire pin 55, the second secondary wire pin 54, the first secondary wire pin 53, and the main wire tail pin 52 in this solution are less than half of the circumferential arc length of the gear ring 11, that is, the main wire head pin 51, the third secondary wire pin 55, the second secondary wire pin 54, the first secondary wire pin 53, and the main wire tail pin 52 are arranged on one side of the straight line where the gear ring 11 is located along its radial direction. Such a setting makes the distances between the plurality of pins 50 relatively close. When the plurality of pins 50 are welded to the PCB board, it is beneficial to reduce the size of the PCB board; when the plurality of pins 50 are welded to a plurality of lead wires, it is beneficial for the plurality of lead wires to gather together to reduce the space occupied by the plurality of lead wires. Thus, it can be seen that this solution is beneficial to realizing the miniaturization of the motor.

[0144] Please refer to Figure 12 , in one embodiment, the step of winding the stator winding 30 around the insulating member 20, where the stator winding 30 includes at least two insulated aluminum core wires, and the wire head and wire tail of each insulated aluminum core wire are respectively wound around a pin 50 further includes:

[0145] The end of the insulating member 20 is provided with a fourth sub-wire pin 56 spaced from the third sub-wire pin 55; the stator winding 30 further includes a third insulated aluminum core wire;

[0146] Wind the end of the third insulated aluminum core wire around the third sub-wire pin 55, and the third sub-phase winding 323 and the second sub-phase winding 322 are connected through the third sub-wire pin 55;

[0147] Wind the third insulated aluminum core wire around a plurality of sub-winding teeth 222 in sequence and limit it in a plurality of sub-wire grooves 26 in sequence;

[0148] Wind the end of the third insulated aluminum core wire around the fourth sub-wire pin 56 to form the third sub-phase winding 323.

[0149] It can be understood that the difference between the third sub-phase winding 323 formed in this embodiment and the aforementioned second sub-phase winding 322 is that the end of the second insulated aluminum core wire is wound around the second sub-wire pin 54, and the end of the second insulated aluminum core wire is wound around the third sub-wire pin 55, while the end of the third insulated aluminum core wire is wound around the third sub-wire pin 55, and the end of the third insulated aluminum core wire is wound around the fourth sub-wire pin 56. That is to say, the end of the second insulated aluminum core wire and the end of the third insulated aluminum core wire are both wound around the third sub-wire pin 55, so that the second insulated aluminum core wire and the third insulated aluminum core wire are connected, that is, the second sub-phase winding 322 and the third sub-phase winding 323 are connected through the third sub-wire pin 55. In this embodiment, by providing the first sub-phase winding 321, the second sub-phase winding 322 and the third sub-phase winding 323, the motor can have three speed regulation gears, that is, the speed of the motor can be adjusted, which is beneficial to improving the applicability of the motor.

[0150] In one embodiment, the main wire head pin 51, the fourth sub-wire pin 56, the third sub-wire pin 55, the second sub-wire pin 54, the first sub-wire pin 53 and the main wire tail pin 52 are arranged at intervals in sequence along the circumferential direction of the insulating member 20 and are adjacent to each other.

[0151] It can be understood that the connection lengths between the main wire head pin 51, the fourth auxiliary wire pin 56, the third auxiliary wire pin 55, the second auxiliary wire pin 54, the first auxiliary wire pin 53 and the main wire tail pin 52 in this solution are less than half of the circumferential arc length of the gear ring 11, that is, the main wire head pin 51, the fourth auxiliary wire pin 56, the third auxiliary wire pin 55, the second auxiliary wire pin 54, the first auxiliary wire pin 53 and the main wire tail pin 52 are arranged on one side of the straight line where the gear ring 11 is located along its radial direction. Such an arrangement makes the distances between the multiple pins 50 relatively close. When the multiple pins 50 are soldered to the PCB board, it is beneficial to reduce the size of the PCB board; when the multiple pins 50 are soldered to the multiple lead wires, it is beneficial for the multiple lead wires to gather together to reduce the space occupied by the multiple lead wires. Thus, it can be seen that this solution is beneficial to realizing the miniaturization of the motor.

[0152] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A stator assembly, characterized in that, it includes: A stator body, including a stator tooth part, an insulating member, a stator winding and a stator yoke. The stator tooth part includes a tooth ring and a plurality of tooth parts arranged outside the tooth ring. The stator tooth part is arranged on the insulating member. The stator winding is wound around the insulating member with insulated aluminum core wires. The stator yoke is sleeved on the stator tooth part and the insulating member; A plurality of pins, arranged on the insulating member. The head and tail of each insulated aluminum core wire are respectively connected to one of the pins to form a connection part on the pin; and Sealant, wrapping the connection part to form a sealing layer.

2. The stator assembly according to claim 1, characterized in that, the sealant is a photosensitive adhesive.

3. The stator assembly according to claim 2, characterized in that, the head and tail of the insulated aluminum core wire are respectively welded to one of the pins to form a solder joint on the pin, and the photosensitive adhesive is dripped and wrapped around the solder joint.

4. The stator assembly according to any one of claims 1 to 3, characterized in that, the insulating member includes an annularly arranged enclosing member and a plurality of winding parts arranged outside the enclosing member. An installation table is provided on the enclosing member. A bearing surface for bearing the sealant is provided on the installation table, and a plugging hole for inserting the pin is provided on the bearing surface.

5. The stator assembly according to claim 4, characterized in that, there are a plurality of the installation tables, and the plurality of installation tables are arranged on the inner peripheral wall of the enclosing member at intervals in sequence and are adjacent to each other; and / or, a plurality of protrusions extending axially outward along the tooth ring are provided at the end of the enclosing member, and the plurality of protrusions are arranged at intervals in sequence around the circumference of the enclosing member.

6. The stator assembly according to claim 4, characterized in that, a main wire passing groove is provided on the insulating member between two adjacent winding parts. The plurality of winding parts include a plurality of main winding teeth arranged at intervals in sequence. The stator winding includes a main phase winding, and the main phase winding is wound around the plurality of main winding teeth in sequence, bypasses the outside of the enclosing member and is sequentially limited in the plurality of main wire passing grooves.

7. The stator assembly according to claim 6, characterized in that, a main wire passing part is provided on the outer peripheral wall of the enclosing member near one end of the pin. The main wire passing part is arranged between two adjacent winding parts, and the main wire passing part and the enclosing member enclose to form the main wire passing groove.

8. The stator assembly according to claim 6, characterized in that, the plurality of winding parts further include a plurality of sub-winding teeth. The plurality of main winding teeth and the plurality of sub-winding teeth are alternately arranged at intervals along the outer peripheral wall of the enclosing member. A sub-wire passing groove is provided on the insulating member between the adjacent main winding teeth and sub-winding teeth. The stator winding further includes at least one sub-phase winding, and the sub-phase winding is wound around the plurality of sub-winding teeth in sequence, bypasses the outside of the enclosing member and is sequentially limited in the plurality of sub-wire passing grooves.

9. The stator assembly according to claim 8, characterized in that, A secondary wire-passing portion is further provided on the outer peripheral wall of the enclosure member. The secondary wire-passing portion and the primary wire-passing portion are respectively provided at opposite ends of the enclosure member along its axial direction. The secondary wire-passing portion is provided between the adjacent primary winding teeth and secondary winding teeth. A secondary wire-passing groove is formed by enclosing between the secondary wire-passing portion and the enclosure member.

10. The stator assembly according to claim 1, wherein, the insulating member includes an upper frame and a lower frame which are respectively arranged in a ring shape. The upper frame and the lower frame are butt-jointed. The upper frame and the lower frame are combined to form a plurality of winding portions. Each winding portion is formed with a stator tooth receiving groove and a wire-passing groove. The stator tooth receiving groove is formed at the butt-joint of the upper frame and the lower frame and extends along the radial direction of the insulating member. The wire-passing groove is arranged along the direction surrounding the stator tooth receiving groove. The stator tooth receiving groove and the wire-passing groove are arranged at intervals.

11. An electric motor, wherein, it includes the stator assembly according to any one of claims 1 to 10.

12. A manufacturing method of a stator assembly, wherein, it includes the following steps: Prepare a stator tooth portion, an insulating member, a stator winding, a stator yoke portion, a plurality of pins and a sealant. The stator tooth portion includes a tooth ring and a plurality of tooth portions arranged outside the tooth ring. The stator yoke portion is arranged in a ring shape; Mount the stator tooth portion on the insulating member; Mount a plurality of pins on the insulating member; Wind the stator winding on the insulating member. The stator winding includes at least two insulated aluminum core wires. The head and the tail of each insulated aluminum core wire are respectively wound on a pin; Weld the insulated aluminum core wire to the pin to form a solder joint on the pin; Drop or coat the sealant at the solder joint to form a sealing layer on the solder joint; Put the assembled stator tooth portion and insulating member after winding into the stator yoke portion.

13. The manufacturing method of the stator assembly according to claim 12, wherein, the step of dropping or coating the sealant at the solder joint to form a sealing layer on the solder joint includes: the sealant is a photosensitive adhesive; Drop or coat the photosensitive adhesive at the solder joint; Irradiate the photosensitive adhesive at the solder joint with ultraviolet light. The photosensitive adhesive cures and wraps the solder joint to form a sealing layer.

14. The manufacturing method of the stator assembly according to claim 12, wherein, the step of winding the stator winding on the insulating member. The stator winding includes at least two insulated aluminum core wires. The head and the tail of each insulated aluminum core wire are respectively wound on a pin includes: The insulating member has a plurality of primary winding teeth arranged at intervals. A primary wire-passing groove is provided between two adjacent primary winding teeth. The end of the insulating member is provided with a main wire head pin and a main wire tail pin arranged at intervals. The stator winding includes a main insulated aluminum core wire; Wind the head of the main insulated aluminum core wire on the main wire head pin; Wind the main insulated aluminum core wire successively on a plurality of primary winding teeth and limit it in a plurality of primary wire-passing grooves successively; Wind the tail of the main insulated aluminum core wire on the main wire tail pin to form a main-phase winding.

15. The manufacturing method of the stator assembly according to claim 14, wherein, The step of winding the stator winding on the insulating member, where the stator winding includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound on a pin, further includes: The insulating member has a plurality of secondary winding teeth arranged at intervals. The plurality of secondary winding teeth and the plurality of primary winding teeth are alternately arranged at intervals in sequence. A secondary wire groove is provided between adjacent primary winding teeth and secondary winding teeth. At the end of the insulating member, a first secondary wire pin and a second secondary wire pin are provided at intervals; the stator winding further includes a first insulated aluminum core wire; Wind the head of the first insulated aluminum core wire on the first secondary wire pin; Wind the first insulated aluminum core wire successively on the plurality of secondary winding teeth and limit it successively in the plurality of secondary wire grooves; Wind the tail of the first insulated aluminum core wire on the second secondary wire pin to form a first secondary phase winding.

16. The method for manufacturing a stator assembly according to claim 15, characterized in that The step of winding the stator winding on the insulating member, where the stator winding includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound on a pin, further includes: At the end of the insulating member, a third secondary wire pin is provided at an interval from the second secondary wire pin; the stator winding further includes a second insulated aluminum core wire; Wind the head of the second insulated aluminum core wire on the second secondary wire pin, and the second secondary phase winding is connected to the first secondary phase winding through the second secondary wire pin; Wind the second insulated aluminum core wire successively on the plurality of secondary winding teeth and limit it successively in the plurality of secondary wire grooves; Wind the tail of the second insulated aluminum core wire on the third secondary wire pin to form a second secondary phase winding.

17. The method for manufacturing a stator assembly according to claim 16, characterized in that The step of winding the stator winding on the insulating member, where the stator winding includes at least two insulated aluminum core wires, and the head and tail of each insulated aluminum core wire are respectively wound on a pin, further includes: At the end of the insulating member, a fourth secondary wire pin is provided at an interval from the third secondary wire pin; the stator winding further includes a third insulated aluminum core wire; Wind the head of the third insulated aluminum core wire on the third secondary wire pin, and the third secondary phase winding is connected to the second secondary phase winding through the third secondary wire pin; Wind the third insulated aluminum core wire successively on the plurality of secondary winding teeth and limit it successively in the plurality of secondary wire grooves; Wind the tail of the third insulated aluminum core wire on the fourth secondary wire pin to form a third secondary phase winding.

18. The method for manufacturing a stator assembly according to claim 17, characterized in that The main wire head pin, the fourth secondary wire pin, the third secondary wire pin, the second secondary wire pin, the first secondary wire pin and the main wire tail pin are arranged at intervals and adjacent to each other along the circumferential direction of the insulating member.

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