Insulating bobbin and winding method therefor, stator structure, and motor

Abstract

The present disclosure provides an insulating bobbin and a winding method therefor, a stator structure, and a motor. The insulating bobbin comprises outlet portions, inlet portions, and latching portions; the inlet portions and the outlet portions allow a stator winding to enter and exit for winding around tooth portions of a stator core, and the latching portions carry out the threading of tooth portion windings; the stator winding is configured to be divided into three threading layer intervals in the axial direction of the insulating bobbin, and each threading layer is confined to the corresponding threading layer interval by the corresponding outlet portion, inlet portion and latching portion; the insulating bobbin can wind at least two stator windings having the same slot number and different pole numbers, the at least two stator windings having the same slot number and different pole numbers share the same threading layer interval, and among the outlet portions and the inlet portions corresponding to the at least two stator windings having the same slot number and different pole numbers, at least one pair of outlet portion and inlet portion is shared by the at least two stator windings having the same slot number and different pole numbers. On the basis of the insulating bobbin of the present disclosure, one insulating bobbin can be used to fit two motors having different pole numbers, thereby reducing the mold opening quantity and lowering the mold opening cost.

Description

Insulation frame and winding method thereof, stator structure and motor

[0001] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on August 3, 2023, with application number 202310978232.3 and invention name “Insulating skeleton and winding method thereof, stator structure and motor”, the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0002] The present disclosure relates to the technical field of motors, and in particular to an insulating skeleton and a winding method thereof, a stator structure, and a motor. Background Art

[0003] As a power source for electrical appliances or various machines, the main function of the motor is to convert mechanical energy into electrical energy. The motor mainly includes: a stator and a rotor. The stator is provided with a stator coil, and the rotor is provided with a magnet. The rotation of the rotor is achieved by the cooperation of the magnet and the stator coil.

[0004] In current motors, motors with different pole numbers have different rotors and corresponding insulating frames. Therefore, in order to realize motors with different pole numbers, different molds need to be developed to produce insulating frames, which has poor adaptability and high cost.

[0005] Summary of the Invention

[0006] The main purpose of the present disclosure is to provide an insulating frame and its winding method, a stator structure and a motor, which can use one insulating frame to adapt to two motors with different pole numbers, reduce the number of molds and reduce the mold cost.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present disclosure, an insulating skeleton is provided, comprising an outlet portion, an inlet portion and a buckle portion, the inlet portion and the outlet portion being configured to allow stator windings to enter and exit for winding the teeth of the stator core, the buckle portion being configured to limit the wire passing of each tooth winding, the stator winding being configured to be divided into three layers of wire passing layer intervals along the axial direction of the insulating skeleton, each layer of wire passing being restricted in the corresponding wire passing layer interval by the corresponding outlet portion, inlet portion and buckle portion, the insulating skeleton being configured to be able to wind at least two stator windings with the same slot but different number of poles, at least two stator windings with the same slot but different number of poles share the same wire passing layer interval, and among the outlet portions and inlet portions corresponding to the at least two stator windings with the same slot but different number of poles, at least one pair of outlet portions and inlet portions are shared by the at least two stator windings with the same slot but different number of poles.

[0008] In some embodiments, the buckle portion includes an exit buckle portion and an entry buckle portion. Among the exit buckle portions and entry buckle portions corresponding to at least two stator windings with the same slot but different numbers of poles, at least one pair of the exit buckle portions and entry buckle portions are shared by the at least two stator windings with the same slot but different numbers of poles.

[0009] In some embodiments, the number of slots M and the number of poles N of at least two stator windings with the same slots but different numbers of poles satisfy M-4≤N≤M+4, and M≠N.

[0010] In some embodiments, the insulating skeleton is configured to be capable of winding two stator windings with the same slot but different numbers of poles, and the winding directions of the two stator windings with the same slot but different numbers of poles are opposite.

[0011] In some embodiments, the buckle point portion includes an exit buckle point portion and an entry buckle point portion. Two stator windings with the same slot but different pole numbers are wound along different winding directions in the same wire passing layer interval. The exit portion, entrance portion, exit buckle point portion and entry buckle point portion adapted for the stator winding with fewer poles are independent of each other and have different positions.

[0012] In some embodiments, the buckle point portion includes an exit buckle point portion and an entry buckle point portion. Two stator windings with the same slot but different numbers of poles are wound along different winding directions in the same winding layer interval. Among the exit portions and entrance portions adapted to the stator winding with more poles, at least part of the exit portions and entrance portions are shared.

[0013] In some embodiments, when a stator winding with a large number of poles is wound in the middle passing layer area, the exit and entrance of the first intermediate tooth in the middle passing layer area are shared, and the exit and entrance of the second intermediate tooth are shared.

[0014] In some embodiments, when the stator winding with a larger number of poles is wound in the upper passing layer area, the exit and entrance of the second middle teeth in the upper passing layer area are shared.

[0015] In some embodiments, the insulating skeleton is constructed to be able to wind two stator windings with the same slot but different numbers of poles. When winding the wires in the upper passing layer area, in the two stator windings with the same slot but different numbers of poles, the exit portion of the first middle tooth adapted to the stator winding with more poles and the entrance portion of the terminating tooth adapted to the stator winding with fewer poles are the same, and the exit point portion of the first middle tooth adapted to the stator winding with more poles and the entry point portion of the terminating tooth adapted to the stator winding with fewer poles are the same.

[0016] In some embodiments, the insulating skeleton is constructed to be able to wind two stator windings with the same slot but different number of poles. When winding the wires in the upper passing layer area, among the two stator windings with the same slot but different number of poles, the entrance part of the termination tooth adapted for the stator winding with more poles and the entrance part of the first intermediate tooth adapted for the stator winding with fewer poles are the same.

[0017] In some embodiments, the insulating skeleton is constructed to be able to wind two stator windings with the same slot but different numbers of poles. When the stator winding with fewer poles is wound, the initial tooth has only an exit portion and a buckle-out point portion, the terminal tooth has only an entrance portion and a buckle-in point portion, and the intermediate tooth includes an exit portion, an entrance portion, a buckle-out point portion, and a buckle-in point portion.

[0018] According to another aspect of the present disclosure, a stator structure is provided, including a stator core, a stator winding and an insulating frame, wherein the insulating frame is the above-mentioned insulating frame, the insulating frame is embedded in the stator slots of the stator core, and the stator winding is wound on the stator teeth of the stator core.

[0019] According to another aspect of the present disclosure, a motor is provided, including a stator structure and a rotor structure. The stator structure is the above-mentioned stator structure, and the stator structure is sleeved outside the rotor structure to form an air gap between the stator structure and the rotor structure.

[0020] According to another aspect of the present disclosure, there is provided a method for winding the above-mentioned insulating skeleton, comprising:

[0021] Determine the winding type;

[0022] Determine the winding direction according to the winding type;

[0023] Winding is performed in the lower layer passing through the wire layer;

[0024] Winding is carried out in the middle layer passing through the line layer;

[0025] Winding is performed in the upper passing line section;

[0026] The steps for winding in the lower layer passing section include:

[0027] When the stator winding has a large number of poles,

[0028] After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and then the wire is passed through the inlet of the first intermediate tooth of the adjacent same phase and begins to wind the first intermediate tooth.

[0029] After the first intermediate tooth is wound, the wire is passed through the outlet of the first intermediate tooth and passed on the outer wall. The wire is passed through the inlet of the second intermediate tooth of the adjacent same phase and begins to wind the second intermediate tooth.

[0030] After the second intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and then the wire is passed through the inlet of the adjacent same-phase terminal tooth to start winding the terminal tooth.

[0031] After the terminating teeth are wound, they are connected to the windings of the terminating teeth of other layers on the reverse side.

[0032] In some embodiments, the step of performing winding in the lower passing layer interval includes:

[0033] When the stator winding has a small number of poles,

[0034] After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and then the wire is passed through the inlet of the adjacent middle tooth of the same phase to start winding the first middle tooth.

[0035] After the first intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and then the wire is passed through the inlet of the second intermediate tooth of the adjacent same phase to start winding the second intermediate tooth.

[0036] After the second intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and then the wire is passed through the inlet of the adjacent same-phase terminal tooth to start winding the terminal tooth.

[0037] After the terminating teeth are wound, they are connected to the windings of the terminating teeth of other layers on the reverse side.

[0038] In some embodiments, the step of performing winding in the middle layer passing layer interval includes:

[0039] When the stator winding has a small number of poles,

[0040] After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and then the wire is passed through the inlet of the adjacent first intermediate tooth of the same phase to start winding the first intermediate tooth.

[0041] After the first intermediate tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is passed through the inlet of the adjacent second intermediate tooth of the same phase to start winding the second intermediate tooth.

[0042] After the second intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and then the wire is passed through the inlet of the adjacent same-phase terminal tooth to start winding the terminal tooth.

[0043] After the terminating teeth are wound, they are connected to the windings of the terminating teeth of other layers on the reverse side;

[0044] When the stator winding has a large number of poles,

[0045] After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the common outlet and inlet of the adjacent first intermediate tooth of the same phase to start winding the first intermediate tooth.

[0046] After the first intermediate tooth is wound, the wire is passed through the common outlet and inlet and passed on the outer wall. The wire is then passed through the common outlet and inlet of the adjacent second intermediate tooth of the same phase and the second intermediate tooth is wound.

[0047] After the second intermediate tooth is wound, the wire is passed through the shared exit and entrance, passed on the outer wall, and then passed through the entrance of the adjacent same-phase terminating tooth to start winding the terminating tooth.

[0048] After the terminating teeth are wound, they are connected to the windings of the terminating teeth of other layers on the reverse side.

[0049] In some embodiments, the step of performing winding in the upper wire-passing layer interval includes:

[0050] When the stator winding has a small number of poles,

[0051] After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and then the wire is passed through the inlet of the adjacent first intermediate tooth of the same phase to start winding the first intermediate tooth.

[0052] After the first intermediate tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is passed through the inlet of the adjacent second intermediate tooth of the same phase to start winding the second intermediate tooth.

[0053] After the second intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and then the wire is passed through the inlet of the adjacent same-phase terminal tooth to start winding the terminal tooth.

[0054] After the terminating teeth are wound, they are connected to the windings of the terminating teeth of other layers on the reverse side;

[0055] When the stator winding has a large number of poles,

[0056] After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and then the wire is passed through the inlet of the adjacent first intermediate tooth of the same phase to start winding the first intermediate tooth.

[0057] After the first intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the common outlet and inlet of the adjacent second intermediate tooth of the same phase to start winding the second intermediate tooth.

[0058] After the second intermediate tooth is wound, the wire is passed through the shared exit and entrance, passed on the outer wall, and then passed through the entrance of the adjacent same-phase terminating tooth to start winding the terminating tooth.

[0059] After the terminating teeth are wound, they are connected to the windings of the terminating teeth of other layers on the reverse side.

[0060] Applying the technical solution disclosed in the present invention, the insulating skeleton includes an exit portion, an entrance portion and a buckle portion, the entrance portion and the exit portion are constructed for the stator winding to enter and exit for winding the teeth of the stator core, the buckle portion is constructed to limit the wire passing of each tooth winding, the stator winding is constructed to be divided into three layers of wire passing layer intervals along the axial direction of the insulating skeleton, each layer of wire passing is restricted in the corresponding wire passing layer interval by the corresponding exit portion, entrance portion and buckle portion, the insulating skeleton is constructed to be able to wind at least two stator windings with the same slot but different number of poles, at least two stator windings with the same slot but different number of poles share the same wire passing layer interval, and among the exit portions and entrance portions corresponding to the at least two stator windings with the same slot but different number of poles, at least one pair of exit portions and entrance portions are shared by the at least two stator windings with the same slot but different number of poles. The insulating skeleton is designed based on the characteristics of stator windings with the same slot but different pole numbers, so that at least two stator windings with the same slot but different pole numbers share the same wire layer interval, and among the exit parts and entrance parts corresponding to the at least two stator windings with the same slot but different pole numbers, at least one pair of exit parts and entrance parts are shared by the at least two stator windings with the same slot but different pole numbers, so that the stator windings with the same slot but different pole numbers are arranged using the shared exit parts and entrance parts. After determining the common features of the at least two stator windings with the same slot but different pole numbers on the insulating skeleton, the design of other features is realized based on this, so that the insulating skeleton can better adapt to the winding of the at least two stator windings with the same slot but different pole numbers, so that one insulating skeleton can be used to adapt to at least two motors with different pole numbers, reducing the number of molds and lowering the mold opening cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The accompanying drawings, which constitute part of the present disclosure, are intended to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are intended to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the accompanying drawings:

[0062] FIG1 shows a schematic top view of the insulating frame according to an embodiment of the present disclosure;

[0063] FIG2 shows a schematic diagram of the three-dimensional structure of the insulating frame according to an embodiment of the present disclosure;

[0064] FIG3 shows a schematic diagram of the winding on the reverse side of the insulating frame of the 12S10P motor according to an embodiment of the present disclosure;

[0065] FIG4 shows a schematic diagram of the winding of the front side of the insulating frame of the 12S10P motor according to an embodiment of the present disclosure;

[0066] FIG5 shows a schematic diagram of the wire-passing section of the lower layer of the insulation skeleton of the 12S10P motor according to an embodiment of the present disclosure;

[0067] FIG6 shows a schematic diagram of a wire-passing section in the middle layer of the insulation skeleton of a 12S10P motor according to an embodiment of the present disclosure;

[0068] FIG7 shows a schematic diagram of the wire passing section of the upper wire passing layer of the insulation skeleton of the 12S10P motor according to an embodiment of the present disclosure;

[0069] FIG8 shows a schematic diagram of winding on the reverse side of the insulating bobbin of the 12S8P motor according to an embodiment of the present disclosure;

[0070] FIG9 shows a schematic diagram of the winding of the front side of the insulating bobbin of the 12S8P motor according to an embodiment of the present disclosure;

[0071] FIG10 shows a schematic diagram of the wire-passing section of the lower wire-passing layer of the insulation skeleton of the 12S8P motor according to an embodiment of the present disclosure;

[0072] FIG11 shows a schematic diagram of a wire-passing section in the middle layer of the insulation skeleton of a 12S8P motor according to an embodiment of the present disclosure;

[0073] FIG12 shows a schematic diagram of the wire passing section of the upper wire passing layer of the insulation skeleton of the 12S8P motor according to an embodiment of the present disclosure;

[0074] FIG13 is a schematic diagram showing the buckle points and the entrance and exit portions of the lower layer of the wiring layer of the insulating skeleton according to an embodiment of the present disclosure;

[0075] FIG14 is a schematic diagram showing the buckle points and the entrances and exits of the middle layer of the insulation frame in an embodiment of the present disclosure;

[0076] FIG15 shows a schematic diagram of the buckle point portion and the entrance and exit portion of the upper layer of the insulation frame of the embodiment of the present disclosure; and

[0077] FIG16 shows a flow chart of a method for winding a wire of an insulating skeleton according to an embodiment of the present disclosure.

[0078] 100, export department; 200, import department; 300, deduction point department. DETAILED DESCRIPTION

[0079] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0080] With reference to Figures 1 to 15, according to an embodiment of the present disclosure, the insulating skeleton includes an outlet portion 100, an inlet portion 200 and a buckle portion 300. The inlet portion 200 and the outlet portion 100 are configured to allow the stator winding to enter and exit for winding the teeth of the stator core. The buckle portion 300 is configured to limit the wire passing of each tooth winding. The stator winding is configured to be divided into three layers of wire passing layer intervals along the axial direction of the insulating skeleton. Each layer of wire passing is restricted in the corresponding wire passing layer interval by the corresponding outlet portion 100, inlet portion 200 and buckle portion 300. The insulating skeleton is configured to be able to wind at least two stator windings with the same slot but different number of poles. At least two stator windings with the same slot but different number of poles share the same wire passing layer interval. Among the outlet portions and inlet portions corresponding to the at least two stator windings with the same slot but different number of poles, at least one pair of outlet portions and inlet portions is shared by the at least two stator windings with the same slot but different number of poles.

[0081] The insulating skeleton is designed based on the characteristics of stator windings with the same slot but different pole numbers, so that at least two stator windings with the same slot but different pole numbers share the same wire layer interval, and in the exit portions 100 and entrance portions 200 corresponding to the at least two stator windings with the same slot but different pole numbers, at least one pair of exit portions 100 and entrance portions 200 are shared by the at least two stator windings with the same slot but different pole numbers, thereby realizing the setting of the stator windings with the same slot but different pole numbers by utilizing the shared exit portion 100 and entrance portion 200. After determining the common features of the at least two stator windings with the same slot but different pole numbers on the insulating skeleton, the design of other features is realized based on this, so that the insulating skeleton can better adapt to the winding of the at least two stator windings with the same slot but different pole numbers, thereby realizing that one insulating skeleton can adapt to at least two motors with different pole numbers, thereby reducing the number of molds and lowering the mold opening cost.

[0082] In one embodiment, the buckle portion includes an exit buckle portion and an entry buckle portion. Among the exit buckle portions and entry buckle portions corresponding to at least two stator windings with the same slot but different numbers of poles, at least one pair of the exit buckle portions and entry buckle portions are shared by the at least two stator windings with the same slot but different numbers of poles.

[0083] In this embodiment, some of the shared buckle-out and buckle-in points can be determined based on the common features shared by at least two stator windings with the same slot but different numbers of poles. This reduces the difficulty of structural design on the insulating frame adapted to stator windings with the same slot but different numbers of poles, reduces the need for additional structure on the insulating frame, and more fully utilizes the common features of stator windings with the same slot but different numbers of poles, thereby improving the adaptability of the insulating frame.

[0084] In one embodiment, the number of slots M and the number of poles N of at least two stator windings with the same slots but different numbers of poles satisfy M-4≤N≤M+4, and M≠N.

[0085] For example, when the number of slots is 12, the value range of the number of poles N is 8 to 16, that is, the insulating skeleton disclosed in the present invention is particularly suitable for 12 slots 8 poles and 12 slots 10 poles, 12 slots 10 poles and 12 slots 14 poles, 12 slots 8 poles and 12 slots 14 poles, 12 slots 8 poles and 12 slots 16 poles, 12 slots 10 poles and 12 slots 14 poles, 12 slots 14 poles and 12 slots 16 poles, etc., and can also be adapted to 12 slots 8 poles, 12 slots 10 poles and 12 slots 14 poles, or 12 slots 10 poles, 12 slots 14 poles and 12 slots 16 poles, etc., limited by the structural limitations of the insulating skeleton, generally speaking, the types of stator windings adapted by the insulating skeleton should not exceed three, but it is not limited to this. When the structure of the insulating skeleton is sufficient, the insulating skeleton can also be adapted to four or more stator windings.

[0086] The more types of stator windings that the insulating skeleton is adapted to, the more difficult it is to design the insulating skeleton. Therefore, considering cost and ease of use, it is more appropriate for the insulating skeleton to be adapted to two or three types of stator windings.

[0087] In one embodiment, the insulating skeleton is constructed to be capable of winding two stator windings with the same slot but different pole numbers, and the winding directions of the two stator windings with the same slot but different pole numbers are opposite.

[0088] In one embodiment, the buckle point portion includes an exit buckle point portion and an entry buckle point portion. Two stator windings with the same slot but different numbers of poles are wound along different winding directions in the same wire passing layer interval. The exit portion, entrance portion, exit buckle point portion and entry buckle point portion adapted for the stator winding with fewer poles are independent of each other and have different positions.

[0089] In one embodiment, the buckle point portion includes an exit buckle point portion and an entry buckle point portion. Two stator windings with the same slot but different numbers of poles are wound along different winding directions in the same wire passing layer interval. Among the exit portions and entrance portions adapted to the stator winding with more poles, at least part of the exit portions and entrance portions are shared.

[0090] The outlet and the inlet are shared in common means that the outlet and the inlet share the same groove, and the groove is used as both the outlet and the inlet.

[0091] In one embodiment, when the stator winding with a large number of poles is wound in the middle passing layer area, the exit and entrance of the first intermediate tooth in the middle passing layer area are shared, and the exit and entrance of the second intermediate tooth are shared.

[0092] In one embodiment, when the stator winding with a larger number of poles is wound in the upper passing layer area, the exit and entrance of the second middle tooth in the upper passing layer area are shared.

[0093] In one embodiment, the insulating skeleton is constructed to be able to wind two stator windings with the same slot but different number of poles. When winding in the upper passing layer area, in the two stator windings with the same slot but different number of poles, the exit part of the first middle tooth adapted to the stator winding with more poles and the entrance part of the terminating tooth adapted to the stator winding with fewer poles are the same, and the exit point part of the first middle tooth adapted to the stator winding with more poles and the entry point part of the terminating tooth adapted to the stator winding with fewer poles are the same.

[0094] In one embodiment, the insulating skeleton is constructed to be able to wind two stator windings with the same slot but different number of poles. When winding the wires in the upper passing layer area, the entrance part of the termination tooth adapted to the stator winding with more poles and the entrance part of the first intermediate tooth adapted to the stator winding with fewer poles in the two stator windings with the same slot but different number of poles are the same.

[0095] In one embodiment, the insulating skeleton is constructed to be able to wind two stator windings with the same slot but different pole numbers. When the stator winding with fewer poles is wound, the initial tooth has only an exit portion and a buckle-out point portion, the terminal tooth has only an entry portion and a buckle-in point portion, and the intermediate tooth includes an exit portion, an entry portion, a buckle-out point portion, and a buckle-in point portion.

[0096] For ease of description, when the insulating bobbin is constructed to be capable of winding two stator windings with the same slots but different pole numbers, the insulating bobbin is constructed to be capable of winding 12S8P windings and 12S10P windings.

[0097] The winding direction of the 12S8P winding is opposite to that of the 12S10P winding. The 12S8P winding and the 12S10P winding share the same wire layer interval. In the 12S10P winding, the exit portion 100 and the entrance portion 200 of at least one tooth in the wire layer interval are completely identical and shared.

[0098] The insulating skeleton optimizes the design of the outlet portion 100, the inlet portion 200 and the buckle portion 300. According to the difference between the 12S8P winding and the 12S10P winding, the positions and settings of the outlet portion 100, the inlet portion 200 and the buckle portion 300 are improved. This can avoid the problem of interference between the outlet portion 100 and the inlet portion 200 caused by the different winding teeth corresponding to different layers of winding in the 12S8P winding and the 12S10P winding. It ensures that a single insulating skeleton can complete the winding of the 12S8P winding and the 12S10P winding. One insulating skeleton can be used to adapt to two motors with different pole numbers, reducing the number of molds and reducing the mold opening cost.

[0099] In one embodiment, all the exits and inlets used by the 12S8P winding are located on both sides of the circumference of the corresponding tooth, and the exits and inlets are not shared. For the 12S8P winding, the exits and inlets are symmetrical about the center line of the corresponding tooth.

[0100] When designing the insulating skeleton, since the structure of the 12S8P winding is relatively regular and the teeth where the same-phase winding is located are evenly arranged along the circumferential direction, there will be no problem of overlapping windings on the same layer during winding. The structure is simpler and easier to implement. When designing the insulating skeleton, the insulating skeleton can be modified based on the insulating skeleton structure suitable for the 12S8P winding. According to the characteristics of the 12S10P winding structure, relevant structures suitable for the 12S10P winding, such as the outlet, inlet and corresponding buckle points, are added to the insulating skeleton suitable for the 12S8P winding. For the 12S8P winding and the 12S10P winding, the exit and entrance of the two windings on the same layer are shared. However, since the winding directions of the 12S8P winding and the 12S10P winding are opposite, the exit and entrance shared by the two windings are shared, but their functions are opposite. That is, the exit of the 12S8P winding also serves as the entrance of the 12S10P winding, and the entrance of the 12S8P winding also serves as the exit of the 12S10P winding. For the exit and entrance of the same tooth, if the 12S8P winding and the 12S10P winding are connected, the exit and entrance of the same tooth will be connected. The exit and entrance of the winding at this tooth position are on different layers from the exit and entrance of 12S10P at this tooth position. There is a problem that the routing position of the winding cannot be effectively defined due to the overlap of the exit and entrance. Therefore, in this case, the exit and entrance of the 12S8P winding and the 12S10P winding at this tooth need to be distinguished. At the same time, since the circumferential space of the insulating skeleton is effective, if two sets of exits and entrances are set on both sides of the same tooth, it will lead to the problem of insufficient space.

[0101] In the present disclosure, the insulating skeleton structure matching the 12S10P winding is modified, and the exit and entrance parts corresponding to the 12S8P winding are in a position where there is interference, so that the exit and entrance parts of the 12S10P winding are shared, that is, the exit and entrance parts of the 12S10P winding are a groove, and the groove is located between the exit and entrance parts corresponding to the 12S8P winding, so that the space can be reasonably and effectively utilized, and the interference problem between the exit and entrance parts can be effectively avoided.

[0102] With this design, the inlet and outlet positions of 12S10P are designed while the related structures of the 12S8P insulation skeleton remain unchanged. The structural strength and spatial distribution of the insulation skeleton are given priority considerations. The insulation skeleton structure suitable for the 12S10P winding is designed, which can effectively reduce the amount of copper used and simplify the process.

[0103] In addition, for 12S10P windings, due to the opposite winding directions of the same-phase windings on adjacent teeth, the exit of the winding may be located behind the entrance in the winding direction during winding. This results in a section of copper wire overlapping with the copper wire at the entrance after the winding is completed, which has an adverse effect on the performance of the motor. After the shared exit and entrance are designed, the winding direction can be changed directly on the tooth when entering the tooth from the shared exit and entrance for winding, rather than in the wire-passing layer on the outer wall of the insulating frame. Since the winding enters and exits the tooth using the same groove, the winding routing is effectively avoided from overlapping in the wire-passing layer, improving the performance of the motor.

[0104] In one embodiment, among all the exit parts and entrance parts used by the 12S8P winding, the spacing between adjacent exit parts is equal along the winding direction of the winding, the spacing between adjacent entrance parts is equal, all the exit parts used by the 12S8P winding are evenly distributed along the circumference of the insulating skeleton, all the entrance parts used by the 12S8P winding are evenly distributed along the circumference of the insulating skeleton, and the entrance parts and exit parts used by the 12S8P winding are symmetrical about the center line of the tooth to which they belong.

[0105] In one embodiment, except for all exits and inlets used by the 12S8P winding, the exits and inlets used by the 12S10P winding are identical and shared with at least one tooth in each wire-passing layer interval. In this embodiment, since all exits and inlets used by the 12S8P winding include some exits and inlets shared with the 12S10P winding, and these exits and inlets are separately provided, just like the exits and inlets of the 12S8P winding, the identical and shared exits and inlets used by the 12S10P winding are outside this portion, that is, they are unique to the 12S10P winding.

[0106] For the 12S10P winding, the insulating bobbin adapted to it needs to meet the winding characteristics of the 12S10P winding. The characteristics of the 12S10P winding determine that when a more compact and stronger insulating bobbin needs to be designed, the exit and entrance of at least one tooth in each layer of the wire passing interval must be exactly the same and shared. Only in this way can the designed insulating bobbin be adapted to the winding of both the 12S8P winding and the 12S10P winding.

[0107] In one embodiment, when there is sufficient space in the insulating frame, different exits and entrances can be set on both sides of the tooth that serves as both an intermediate tooth and a starting tooth, so that the entrance and exit of the tooth when used as an intermediate tooth are independent of the exit when used as a starting tooth and are not shared.

[0108] In one embodiment, among the exit and entry parts used by the 12S10P winding, the exit and entry parts to which the first middle tooth in the lower passing layer section belongs are completely identical and shared.

[0109] In this embodiment, the lower passing layer section is a W-phase winding, and the first middle tooth of the lower passing layer section is a tooth adjacent to the starting tooth of the lower passing layer section.

[0110] In one embodiment, in the exit and entrance parts used by the 12S10P winding, the exit and entrance parts to which the first intermediate tooth and the second intermediate tooth in the middle-layer passing layer section belong are completely identical and shared.

[0111] In this embodiment, the middle passing layer section is a V-phase winding, and the first intermediate tooth in the middle passing layer section is a tooth adjacent to the starting tooth in the middle passing layer section.

[0112] In one embodiment, among the exit and entry parts used by the 12S10P winding, the exit and entry parts to which the second middle tooth in the upper passing layer section belongs are completely identical and shared.

[0113] In this embodiment, the upper passing layer section is a U-phase winding, and the second middle tooth of the upper passing layer section is a tooth adjacent to the terminating tooth of the upper passing layer section.

[0114] Each of the above-mentioned wire-passing layer intervals has its own starting tooth, first intermediate tooth, second intermediate tooth and ending tooth. The order of the first intermediate tooth and the second intermediate tooth is determined by the routing and winding direction of each wire-passing layer interval.

[0115] In this embodiment, since the insulating skeleton has 12 slots, there are 12 teeth, which are respectively recorded as tooth 1, tooth 2, ..., tooth 12 for ease of description, where tooth 1 is the starting tooth of the lower layer.

[0116] Referring to FIG4 , which is a schematic diagram of the winding connection when the insulating skeleton of the embodiment of the present disclosure is applied to a 12S10P motor, in FIG4 , ◎ represents winding out, and ⊕ represents winding in. The winding is wound out and in on the teeth to wrap around the teeth. In this way, the winding method and connection method of each tooth can be represented. As shown in FIG4 , the winding of the lower layer of the wire passing layer is wound around teeth 1, 2, 7, and 8 in sequence; the winding of the middle layer of the wire passing layer is wound around teeth 3, 4, 9, and 10 in sequence; and the winding of the upper layer of the wire passing layer is wound around teeth 5, 6, 11, and 12 in sequence.

[0117] After the stator winding is wound around one tooth, it is then wound around another tooth of the same phase within the same layer interval along the circumferential direction of the frame wall.

[0118] Referring to FIG9 , which shows a schematic diagram of the winding connection when the insulating skeleton of the present disclosure embodiment is applied to a 12S8P motor, FIG9 , ◎ represents winding out, ⊕ represents winding in, and the winding is wound out and in on the teeth to wrap around the teeth. In this way, the winding method and connection method of each tooth can be represented. As shown in FIG9 , the winding of the lower pass-through layer interval is wound around teeth 1, 10, 7, and 4 in sequence; the winding of the middle pass-through layer interval is wound around teeth 2, 11, 8, and 5 in sequence; and the winding of the upper pass-through layer interval is wound around teeth 3, 12, 9, and 6 in sequence.

[0119] After the stator winding is wound around one tooth, it is then wound around another tooth of the same phase within the same layer interval along the circumferential direction of the frame wall.

[0120] In the present disclosure, since the outlet of the insulating skeleton adapted to the 12S8P winding may also serve as the inlet of the insulating skeleton adapted to the 12S10P winding, the same groove can be used as both the outlet and the inlet, and needs to be distinguished according to the adapted winding.

[0121] For the groove shared by the outlet and the inlet, since the directions of the outlet and the inlet are different, buckle points need to be set on both sides of the groove. The buckle point on one side is used as the buckle exit point, and the buckle point on the other side is used as the buckle entry point.

[0122] For the convenience of description, in the insulating skeleton structure adapted for the 12S8P winding, the outlet portion corresponding to tooth 1 is c1, and the buckle point portion is ck1; the outlet portion corresponding to tooth 2 is c2, and the buckle point portion is ck2; the outlet portion corresponding to tooth 3 is c3, and the buckle point portion is ck3; the entrance portion corresponding to tooth 4 is r4, and the buckle point portion is rk4; the entrance portion corresponding to tooth 5 is r5, and the buckle point portion is rk5; the entrance portion corresponding to tooth 6 is r6, and the buckle point portion is rk6; the entrance portion corresponding to tooth 7 is r7, and the buckle point portion is rk7; the outlet portion corresponding to tooth 7 is c7, and the buckle point portion is ck7; the entrance portion corresponding to tooth 8 is r8, and the buckle point portion is rk8, the outlet portion corresponding to tooth 8 is c8, and the buckle point portion is ck8, the entrance portion corresponding to tooth 9 is r9, and the buckle point portion is rk9, the outlet portion corresponding to tooth 9 is c9, and the buckle point portion is ck9, the entrance portion corresponding to tooth 10 is r10, and the buckle point portion is rk10, the outlet portion corresponding to tooth 10 is c10, and the buckle point portion is ck10, the entrance portion corresponding to tooth 11 is r11, and the buckle point portion is rk11, the outlet portion corresponding to tooth 11 is c11, and the buckle point portion is ck11, the entrance portion corresponding to tooth 12 is r12, and the buckle point portion is rk12, the outlet portion corresponding to tooth 12 is c12, and the buckle point portion is ck12.

[0123] Since in the 12S8P winding, the winding of the lower passing layer interval passes around teeth 1, 10, 7, and 4 in sequence; the winding of the middle passing layer interval passes around teeth 2, 11, 8, and 5 in sequence; and the winding of the upper passing layer interval passes around teeth 3, 12, 9, and 6 in sequence, therefore, tooth 1 is the starting tooth of the lower passing layer interval, tooth 10 is the first intermediate tooth of the lower passing layer interval, tooth 7 is the second intermediate tooth of the lower passing layer interval, tooth 4 is the terminating tooth of the lower passing layer interval, tooth 2 is the starting tooth of the middle passing layer interval, tooth 11 is the first intermediate tooth of the middle passing layer interval, tooth 8 is the second intermediate tooth of the middle passing layer interval, tooth 5 is the terminating tooth of the middle passing layer interval, tooth 3 is the starting tooth of the upper passing layer interval, tooth 12 is the first intermediate tooth of the upper passing layer interval, tooth 9 is the second intermediate tooth of the upper passing layer interval, and tooth 6 is the terminating tooth of the upper passing layer interval.

[0124] For the convenience of description, in the insulating skeleton structure adapted for the 12S10P winding, the outlet portion corresponding to tooth 1 is c1-1, and the buckle point portion is ck1-1; the inlet portion corresponding to tooth 2 is r2-1, and the buckle point portion is rk2-1; the outlet portion corresponding to tooth 2 is c2-1, and the buckle point portion is ck2-1; the outlet portion corresponding to tooth 3 is c3-1, and the buckle point portion is ck3-1; the inlet portion corresponding to tooth 4 is r4-1, and the buckle point portion is rk4-1; the outlet portion corresponding to tooth 4 is c4-1, and the buckle point portion is ck4-1; the outlet portion corresponding to tooth 5 is c5-1, and the buckle point portion is ck5-1; the inlet portion corresponding to tooth 6 is r6-1, and the buckle point portion is rk6-1; the outlet portion corresponding to tooth 6 is c6-1, and the buckle point portion is The entrance portion of tooth 7 is r7-1, the buckle point portion is rk7-1, the outlet portion corresponding to tooth 7 is c7-1, and the buckle point portion is ck7-1, the entrance portion corresponding to tooth 8 is r8-1, and the buckle point portion is rk8-1, the entrance portion corresponding to tooth 9 is r9-1, the buckle point portion is rk9-1, the outlet portion corresponding to tooth 9 is c9-1, and the buckle point portion is ck9-1, the entrance portion corresponding to tooth 10 is r10-1, and the buckle point portion is rk10-1, the entrance portion corresponding to tooth 11 is r11-1, the buckle point portion is rk11-1, the outlet portion corresponding to tooth 11 is c11-1, and the buckle point portion is ck11-1, the entrance portion corresponding to tooth 12 is r12-1, and the buckle point portion is rk12-1.

[0125] Since in the 12S10P winding, the winding of the lower passing layer interval passes around teeth 1, 2, 7, and 8 in sequence; the winding of the middle passing layer interval passes around teeth 3, 4, 9, and 10 in sequence; and the winding of the upper passing layer interval passes around teeth 5, 6, 11, and 12 in sequence, therefore, tooth 1 is the starting tooth of the lower passing layer interval, tooth 2 is the first intermediate tooth of the lower passing layer interval, tooth 7 is the second intermediate tooth of the lower passing layer interval, tooth 8 is the terminating tooth of the lower passing layer interval, tooth 3 is the starting tooth of the middle passing layer interval, tooth 4 is the first intermediate tooth of the middle passing layer interval, tooth 9 is the second intermediate tooth of the middle passing layer interval, tooth 10 is the terminating tooth of the middle passing layer interval, tooth 5 is the starting tooth of the upper passing layer interval, tooth 6 is the first intermediate tooth of the upper passing layer interval, tooth 11 is the second intermediate tooth of the upper passing layer interval, and tooth 12 is the terminating tooth of the upper passing layer interval.

[0126] In a 12S10P winding, the winding direction of tooth 4 or tooth 9, acting as the middle teeth, is opposite to the winding direction of the primary tooth. To prevent coil interference in the middle of the wire feed on the outer wall of the bobbin, the entry and exit sections of the middle teeth are combined into one. Therefore, in a 12S10P winding, entry r2-1 and exit c2-1 share the same section, entry r4-1 and exit c4-1 share the same section, entry r9-1 and exit c9-1 share the same section, and entry r11-1 and exit c11-1 share the same section.

[0127] In the upper passing layer interval, due to the existence of the exit and entrance parts of the tooth 11 in the middle passing layer interval of the 12S 8P winding, the space of the tooth 11 is occupied, so the exit and entrance parts of the tooth 11 of the insulating frame adapted to the 12S10P winding are merged into one.

[0128] In one embodiment, the width of the common outlet portion and inlet portion is greater than the width of the other outlet portions and inlet portions.

[0129] In one embodiment, the width of the common outlet and inlet is b, the stator tooth width is bt, and the length of overlap between the common outlet and inlet and the corresponding stator teeth in the width direction is greater than or equal to 2 / 3 of the stator tooth width.

[0130] In one embodiment, the common outlet and inlet portions are each symmetrical about a centerline of their teeth.

[0131] 16 , according to an embodiment of the present disclosure, the above-mentioned method for winding the insulating frame includes: determining the type of winding; determining the winding direction according to the type of winding;

[0132] Winding is performed in the lower passing line section; winding is performed in the middle passing line section; winding is performed in the upper passing line section.

[0133] In one embodiment, the step of performing winding in the lower passing layer interval includes:

[0134] When the stator winding has a small number of poles, after the starting tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is input through the entrance of the adjacent intermediate tooth of the same phase to start winding the first intermediate tooth. After the first intermediate tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is input through the entrance of the second intermediate tooth of the same phase to start winding the second intermediate tooth. After the second intermediate tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is input through the entrance of the adjacent terminating tooth of the same phase to start winding the terminating tooth. After the terminating tooth is wound, it is connected with the windings of the terminating teeth of other layers on the reverse side.

[0135] When the stator winding has a large number of poles, the starting tooth is wound, the wire is output through the outlet and passed on the outer wall, the wire is input through the entrance of the first intermediate tooth of the adjacent same phase to start winding the first intermediate tooth, after the first intermediate tooth is wound, the wire is output through the outlet of the first intermediate tooth and passed on the outer wall, the wire is input through the entrance of the second intermediate tooth of the adjacent same phase to start winding the second intermediate tooth, after the second intermediate tooth is wound, the wire is output through the outlet and passed on the outer wall, the wire is input through the entrance of the terminating tooth of the adjacent same phase to start winding the terminating tooth, after the terminating tooth is wound, it is connected with the windings of the terminating teeth of other layers on the reverse side.

[0136] In one embodiment, the step of winding the wire in the middle layer passing layer includes:

[0137] When the stator winding has a small number of poles, after the starting tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is input through the entrance of the first intermediate tooth of the adjacent same phase to start winding the first intermediate tooth. After the first intermediate tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is input through the entrance of the second intermediate tooth of the adjacent same phase to start winding the second intermediate tooth. After the second intermediate tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is input through the entrance of the terminating tooth of the adjacent same phase to start winding the terminating tooth. After the terminating tooth is wound, it is connected with the windings of the terminating teeth of other layers on the reverse side.

[0138] When the stator winding has a large number of poles, after the starting tooth is wound, the wire is output through the outlet and passed on the outer wall, and the first intermediate tooth is started to be wound through the common outlet and entrance of the adjacent first intermediate tooth of the same phase. After the first intermediate tooth is wound, the wire is output through the common outlet and entrance and passed on the outer wall, and the second intermediate tooth is started to be wound through the common outlet and entrance of the second intermediate tooth of the adjacent same phase. After the second intermediate tooth is wound, the wire is output through the common outlet and entrance and passed on the outer wall, and the terminating tooth is started to be wound through the entrance of the adjacent terminating tooth of the same phase. After the terminating tooth is wound, it is connected with the windings of the terminating teeth of other layers on the reverse side.

[0139] In one embodiment, the step of performing winding in the upper wire-passing layer section includes:

[0140] When the stator winding has a small number of poles, after the starting tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is input through the entrance of the first intermediate tooth of the adjacent same phase to start winding the first intermediate tooth. After the first intermediate tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is input through the entrance of the second intermediate tooth of the adjacent same phase to start winding the second intermediate tooth. After the second intermediate tooth is wound, the wire is passed through the outlet and passed on the outer wall, and the wire is input through the entrance of the terminating tooth of the adjacent same phase to start winding the terminating tooth. After the terminating tooth is wound, it is connected with the windings of the terminating teeth of other layers on the reverse side.

[0141] When the stator winding has a large number of poles, after the starting tooth is wound, the wire is output through the outlet and passed on the outer wall, and the wire is input through the entrance of the adjacent first intermediate tooth of the same phase to start winding the first intermediate tooth. After the first intermediate tooth is wound, the wire is output through the outlet and passed on the outer wall, and the wire is input through the common outlet and entrance of the second intermediate tooth of the adjacent same phase to start winding the second intermediate tooth. After the second intermediate tooth is wound, the wire is output through the common outlet and entrance to pass on the outer wall, and the wire is input through the entrance of the adjacent terminating tooth of the same phase to start winding the terminating tooth. After the terminating tooth is wound, it is connected with the windings of the terminating teeth of other layers on the reverse side.

[0142] The following uses 12S8P as a winding with fewer poles and 12S10P as a winding with more poles as an example to illustrate the specific winding process.

[0143] With reference to FIG5 to FIG7 and FIG13 to FIG15, in this embodiment, the specific steps of winding the 12S10P winding are as follows:

[0144] Lower layer crossing line:

[0145] After the tooth 1 is wound, the wire is taken out through the outlet c1-1 (limited by the buckle point ck1-1) and passed on the outer wall. The wire is then taken in through the inlet r2-1 of the adjacent tooth 2 of the same phase (limited by the buckle point rk2-1) to start winding the tooth 2.

[0146] After the tooth 2 is wound, the wire is taken out through the outlet c2-1 (limited by the buckle point ck2-1) and passed on the outer wall. The wire is then taken in through the inlet r7-1 of the adjacent tooth 7 of the same phase (limited by the buckle point rk7-1) to start winding the tooth 7.

[0147] After the tooth 7 is wound, the wire is taken out through the outlet c7-1 (limited by the buckle point ck7-1) and passed on the outer wall. The wire is then taken in through the inlet r8-1 of the adjacent tooth 8 of the same phase (limited by the buckle point rk8-1) and the tooth 8 is wound.

[0148] After tooth 8 is wound, it is connected to the windings of the terminating teeth of other layers on the reverse side.

[0149] Middle level crossing line:

[0150] After the tooth 3 is wound, the wire is taken out through the outlet c3-1 (limited by the buckle point ck3-1) and passed on the outer wall. The wire is then taken in through the inlet r4-1 of the adjacent tooth 4 of the same phase (limited by the buckle point rk4-1) to start winding the tooth 4.

[0151] After the tooth 4 is wound, the wire is taken out through the outlet c4-1 (limited by the buckle point ck4-1) and passed on the outer wall. The wire is then taken in through the inlet r9-1 of the adjacent tooth 9 of the same phase (limited by the buckle point rk9-1) to start winding the tooth 9.

[0152] After the tooth 9 is wound, the wire is taken out through the outlet c9-1 (limited by the buckle point ck9-1) and passed on the outer wall. The wire is then taken in through the inlet r10-1 of the adjacent tooth 10 of the same phase (limited by the buckle point rk10-1) and the tooth 10 is wound.

[0153] After the tooth 10 is wound, it is connected to the windings of the terminal teeth of other layers on the reverse side.

[0154] Upper crossing line:

[0155] After the tooth 5 is wound, the wire is taken out through the outlet c5-1 (limited by the buckle point ck5-1) and passed on the outer wall. The wire is then taken in through the inlet r6-1 of the adjacent tooth 6 of the same phase (limited by the buckle point rk6-1) and the winding of the tooth 6 is started.

[0156] After the tooth 6 is wound, the wire is taken out through the outlet c6-1 (limited by the buckle point ck6-1) and passed on the outer wall. The wire is then taken in through the inlet r11-1 of the adjacent tooth 11 of the same phase (limited by the buckle point rk11-1) to start winding the tooth 11.

[0157] After the tooth 11 is wound, the wire is taken out through the outlet c11-1 (limited by the buckle outlet ck11-1) and passed on the outer wall. The wire is then taken in through the inlet r12-1 of the adjacent tooth 12 of the same phase (limited by the buckle entry rk12-1) to start winding the tooth 12.

[0158] After the tooth 12 is wound, it is connected to the windings of the terminal teeth of other layers on the reverse side.

[0159] The upper, middle and lower layers of the 12S10P winding can be wound simultaneously, thereby improving winding efficiency.

[0160] With reference to FIG. 10 to FIG. 15 , in this embodiment, the specific steps of winding the 12S8P winding are as follows:

[0161] Lower layer crossing line:

[0162] After the tooth 1 is wound, the wire is taken out through the outlet c1 (limited by the buckle point ck1) and passed on the outer wall. The wire is then taken in through the inlet r10 of the adjacent tooth 10 of the same phase (limited by the buckle point rk10) and the tooth 10 is wound.

[0163] After the tooth 10 is wound, the wire is taken out through the outlet c10 (limited by the buckle point ck10) and passed on the outer wall. The wire is then taken in through the inlet r7 of the adjacent tooth 7 of the same phase (limited by the buckle point rk7) and the tooth 7 is wound.

[0164] After the tooth 7 is wound, the wire is taken out through the outlet c7 (limited by the buckle point ck7) and passed on the outer wall. The wire is then taken in through the inlet r4 of the adjacent tooth 4 of the same phase (limited by the buckle point rk10) and the tooth 4 is wound.

[0165] After the winding of the terminating tooth 4 is completed, it is connected to the windings of the terminating teeth of other layers on the reverse side.

[0166] Middle level crossing line:

[0167] After the tooth 2 is wound, the wire is taken out through the outlet portion c2 (limited by the buckle point portion ck2) and passed on the outer wall. The wire is then taken in through the inlet portion r11 of the adjacent tooth 11 of the same phase (limited by the buckle point portion rk11) and the tooth 11 is wound.

[0168] After the tooth 11 is wound, the wire is taken out through the outlet c11 (limited by the buckle point ck11) and passed on the outer wall. The wire is then taken in through the inlet r8 of the adjacent tooth 8 of the same phase (limited by the buckle point rk8) and the tooth 8 is wound.

[0169] After the tooth 8 is wound, the wire is taken out through the outlet c8 (limited by the buckle point ck8) and passed on the outer wall. The wire is then taken in through the inlet r5 of the adjacent tooth 5 of the same phase (limited by the buckle point rk5) to start winding the tooth 5.

[0170] After tooth 5 is wound, it is connected to the windings of the terminating teeth of other layers on the reverse side.

[0171] Upper crossing line:

[0172] After the tooth 3 is wound, the wire is taken out through the outlet c3 (limited by the buckle point ck3) and passed on the outer wall. The wire is then taken in through the inlet r12 of the adjacent tooth 12 of the same phase (limited by the buckle point rk12) and the tooth 12 is wound.

[0173] After the tooth 12 is wound, the wire is output through the outlet c12 (limited by the buckle point ck12) and passed on the outer wall. The wire is then input through the inlet r9 of the adjacent tooth 9 of the same phase (limited by the buckle point rk9) to start winding the tooth 9.

[0174] After the tooth 9 is wound, the wire is taken out through the outlet portion c9 (limited by the buckle point portion ck9) and passed on the outer wall. The wire is then taken in through the inlet portion r6 of the adjacent tooth 6 of the same phase (limited by the buckle point portion rk6) to start winding the tooth 6.

[0175] After tooth 6 is wound, it is connected to the windings of the terminating teeth of other layers on the reverse side.

[0176] According to an embodiment of the present disclosure, the stator structure includes a stator core, a stator winding and an insulating frame. The insulating frame is the above-mentioned insulating frame, the insulating frame is embedded in the stator slots of the stator core, and the stator winding is wound on the stator teeth of the stator core.

[0177] According to an embodiment of the present disclosure, the motor includes a stator structure and a rotor structure. The stator structure is the above-mentioned stator structure. The stator structure is sleeved outside the rotor structure and forms an air gap between the stator structure and the rotor structure.

[0178] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0179] It should be noted that the terms "first," "second," and the like in the specification and claims of the present disclosure and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein.

[0180] The foregoing description is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. An insulating skeleton, comprising an exit portion, an entrance portion and a buckle portion, wherein the entrance portion and the exit portion are configured to allow stator windings to enter and exit for winding the teeth of a stator core, and the buckle portion is configured to limit the wire passing of each tooth winding, and the stator winding is configured to be divided into three wire passing layer intervals along the axial direction of the insulating skeleton, and each layer of wire passing is limited in the corresponding wire passing layer interval by the corresponding exit portion, entrance portion and buckle portion, and the insulating skeleton is configured to be able to wind at least two stator windings with the same slot but different pole numbers, and at least two stator windings with the same slot but different pole numbers share the same wire passing layer interval, and among the exit portions and entrance portions corresponding to the at least two stator windings with the same slot but different pole numbers, at least one pair of the exit portions and the entrance portion are shared by the at least two stator windings with the same slot but different pole numbers.

2. The insulating skeleton according to claim 1, wherein: The buckle point portion includes a buckle-out point portion and a buckle-in point portion. Among the buckle-out points and buckle-in points corresponding to at least two stator windings with the same slot but different pole numbers, at least one pair of the buckle-out points and buckle-in points are shared by at least two stator windings with the same slot but different pole numbers.

3. The insulating skeleton according to claim 1, wherein: The slot number M and pole number N of at least two stator windings with the same slots but different pole numbers satisfy M-4≤N≤M+4, and M≠N.

4. The insulating skeleton according to claim 1, wherein: The insulating frame is constructed to be able to wind two stator windings with the same slots but different pole numbers, and the winding directions of the two stator windings with the same slots but different pole numbers are opposite.

5. The insulating skeleton according to claim 4, wherein: The buckle point portion includes an exit buckle point portion and an entry buckle point portion. Two stator windings with the same slot but different pole numbers are wound along different winding directions in the same wire passing layer interval. The exit portion, entrance portion, exit buckle point portion and entry buckle point portion adapted for the stator winding with fewer poles are independent of each other and have different positions.

6. The insulating skeleton according to claim 4, wherein: The buckle point portion includes an exit buckle point portion and an entry buckle point portion. Two stator windings with the same slot but different pole numbers are wound along different winding directions in the same wire passing layer interval. Among the exit portions and entrance portions adapted to the stator winding with more poles, at least part of the exit portions and entrance portions are shared.

7. The insulating skeleton according to claim 6, wherein: When the stator winding with a large number of poles is wound in the middle passing layer area, the exit and entrance parts of the first intermediate tooth in the middle passing layer area are shared, and the exit and entrance parts of the second intermediate tooth are shared.

8. The insulating skeleton according to claim 6, wherein: When the stator winding with a larger number of poles is wound in the upper passing wire layer area, the exit and entrance portions of the second intermediate teeth in the upper passing wire layer area are shared.

9. The insulating skeleton according to claim 2, wherein: The insulating skeleton is constructed to be able to wind two stator windings with the same slot but different pole numbers. When winding the wires in the upper wire passing layer area, in the two stator windings with the same slot but different pole numbers, the exit portion of the first middle tooth adapted to the stator winding with more poles and the entrance portion of the terminating tooth adapted to the stator winding with fewer poles are the same, and the buckle exit point portion of the first middle tooth adapted to the stator winding with more poles and the buckle entry point portion of the terminating tooth adapted to the stator winding with fewer poles are the same.

10. The insulating skeleton according to claim 2, wherein: The insulating skeleton is constructed to be able to wind two stator windings with the same slots but different pole numbers. When winding in the upper passing layer area, the entrance part of the termination tooth adapted to the stator winding with more poles and the entrance part of the first intermediate tooth adapted to the stator winding with fewer poles in the two stator windings with the same slots but different pole numbers are the same.

11. The insulating skeleton according to claim 2, wherein: The insulating skeleton is constructed to be able to wind two stator windings with the same slots but different pole numbers. When the stator winding with fewer poles is wound, the initial tooth has only an exit portion and a buckle-out point portion, the terminal tooth has only an entrance portion and a buckle-in point portion, and the intermediate tooth includes an exit portion, an entrance portion, a buckle-out point portion and a buckle-in point portion.

12. A stator structure, comprising a stator core, a stator winding and an insulating frame, wherein the insulating frame is the insulating frame described in any one of claims 1 to 11, the insulating frame is embedded in the stator slots of the stator core, and the stator winding is wound on the stator teeth of the stator core.

13. A motor, comprising a stator structure and a rotor structure, wherein the stator structure is the stator structure according to claim 12, and the stator structure is sleeved outside the rotor structure to form an air gap between the stator structure and the rotor structure.

14. A method for winding a wire of an insulating frame according to any one of claims 1 to 11, comprising: Determine the winding type; Determine the winding direction according to the winding type; Winding is performed in the lower layer passing through the wire layer section; Winding is carried out in the middle layer passing through the line layer section; Winding is performed in the upper wire-passing layer section; The steps of winding in the lower layer passing layer section include: When the stator winding has a large number of poles, After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the first adjacent intermediate tooth of the same phase to start winding the first intermediate tooth. After the first intermediate tooth is wound, the wire is passed through the outlet of the first intermediate tooth and on the outer wall, and the wire is passed through the inlet of the second intermediate tooth of the adjacent same phase to start winding the second intermediate tooth. After the second intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the adjacent same-phase terminal tooth to start winding the terminal tooth. After the terminating teeth are wound, they are connected to the windings of the terminating teeth of other layers on the reverse side.

15. The method for winding an insulating frame according to claim 14, wherein: The step of winding the wire in the lower wire-passing layer section comprises: When the stator winding has a small number of poles, After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the adjacent middle tooth of the same phase to start winding the first middle tooth. After the first intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the second intermediate tooth of the same phase and begins to wind the second intermediate tooth. After the second intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the adjacent same-phase terminal tooth to start winding the terminal tooth. After the terminating teeth are wound, they are connected to the windings of the terminating teeth of other layers on the reverse side.

16. The method for winding a wire of an insulating frame according to claim 14, wherein: The step of winding the wire in the middle layer passing line interval comprises: When the stator winding has a small number of poles, After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the adjacent first intermediate tooth of the same phase to start winding the first intermediate tooth. After the first intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the adjacent second intermediate tooth of the same phase to start winding the second intermediate tooth. After the second intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the adjacent same-phase terminal tooth to start winding the terminal tooth. After the winding of the terminating teeth is completed, the windings of the terminating teeth of other layers are connected together on the reverse side; When the stator winding has a large number of poles, After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the common outlet and inlet of the adjacent first intermediate tooth of the same phase to start winding the first intermediate tooth. After the first intermediate tooth is wound, the wire is passed through the common exit and entrance parts and passed on the outer wall, and the wire is passed through the common exit and entrance parts of the adjacent second intermediate tooth of the same phase to start winding the second intermediate tooth. After the second intermediate tooth is wound, the wire is passed through the common exit and entrance parts and passed on the outer wall. The wire is passed through the entrance part of the adjacent same-phase terminating tooth to start winding the terminating tooth. After the winding of the terminating teeth is completed, the windings of the terminating teeth of other layers are connected together on the reverse side.

17. The method for winding a wire of an insulating frame according to claim 14, wherein: The step of winding the wire in the upper wire-passing layer section comprises: When the stator winding has a small number of poles, After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the adjacent first intermediate tooth of the same phase to start winding the first intermediate tooth. After the first intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the adjacent second intermediate tooth of the same phase to start winding the second intermediate tooth. After the second intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the adjacent same-phase terminal tooth to start winding the terminal tooth. After the winding of the terminating teeth is completed, the windings of the terminating teeth of other layers are connected together on the reverse side; When the stator winding has a large number of poles, After the initial tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the inlet of the adjacent first intermediate tooth of the same phase to start winding the first intermediate tooth. After the first intermediate tooth is wound, the wire is passed through the outlet and on the outer wall, and the wire is passed through the common outlet and inlet of the adjacent second intermediate tooth of the same phase to start winding the second intermediate tooth. After the second intermediate tooth is wound, the wire is passed through the common exit and entrance parts and passed on the outer wall. The wire is passed through the entrance part of the adjacent same-phase terminating tooth to start winding the terminating tooth. After the winding of the terminating teeth is completed, the windings of the terminating teeth of other layers are connected together on the reverse side.

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