CN116231896A - Stator framework, motor stator, motor and winding method of motor stator - Google Patents

Abstract

The invention provides a stator framework, a motor stator, a motor and a winding method of the motor stator, wherein the stator framework comprises a plurality of stator framework units, each stator framework unit comprises a yoke part and a tooth part, each yoke part is provided with a wiring part and an avoiding part, N wire passing grooves are formed in the outer side faces, away from the tooth parts, of the avoiding parts, M avoiding gaps are formed in the end faces, away from the tooth parts, of the avoiding parts, N is an integer greater than three, and M is an integer greater than one. According to the invention, the avoidance notch and the wire passing groove are arranged on the stator framework, and through the combination of the avoidance notch and the wire passing groove, the same stator structure can lead the wire passing grooves of windings of different phases to be mutually noninterfere under the condition that the winding areas, the arrangement and the wiring are different when facing the rotors of different pole numbers, so that the phase-to-phase and phase-ordered separation is realized, the hidden danger of phase-to-phase short circuit is avoided, and the product quality is further improved.

Description

Stator framework, motor stator, motor and winding method of motor stator

Technical Field

The invention relates to the technical field of motors, in particular to a stator framework, a motor stator, a motor and a winding method of the motor stator.

Background

The fractional slot concentrated winding permanent magnet motor has the advantages of excellent torque characteristic, small positioning torque and small torque fluctuation. The rotor of a fractional-slot concentrated winding permanent magnet motor for 12 slots may be 8 poles, 10 poles, 14 poles, 16 poles.

When 10 poles IPSM (surface mounted magnet synchronous motor) and 8 poles SPMSM (built-in magnet synchronous motor) are simultaneously made for 12 slots, the number of poles of the rotor is slightly changed, and the winding connection is quite different. Pages 51-65 of practical design and application technology of permanent magnet brushless DC motor teach how to arrange, partition and wire the fractional slot concentrated winding 12 slot 8 pole and 12 slot 10 pole, the two are very different, and the specific table is as follows:

for the 12 slot 14 pole, it is very similar to 12 slot 10, divided into 2 zones, and for the 12 slot 16 pole, it is very similar to 12 slot 8, divided into 4 zones.

When winding, the wire nozzle of the device carries an enameled wire, the wire nozzle enters a groove, concentrated winding is carried out around the groove, after the number of turns is wound, the wire nozzle is lifted and transferred to the next groove to be wound, and thus 12 grooves are wound in a reciprocating manner.

From the table, it can be seen that the 12 slots 8 pole and the 12 slots 10 pole have the same stator structure, different winding rules exist due to the difference of the number of poles of the rotor, different sections exist, and the existing stator core insulation framework structure easily causes mutual interference of UVW three phases in the winding process, so that how the stator core insulation framework is designed and how the winding mode is designed under the conditions of different sections, different arrangement and different wiring, so that interphase non-contact is realized, interphase short-circuit hidden trouble is avoided, and further, the improvement of product quality is very important.

Disclosure of Invention

The invention aims to provide a stator framework, a motor stator, a motor and a winding method of the motor stator, which can effectively prevent the occurrence of short circuit caused by the mutual contact of the passing wires of coils of different phases of stator windings when the coils of different poles face each other under the condition of the same stator structure.

According to one aspect of the present invention, there is provided a stator frame including a plurality of stator frame units, the stator frame units including a yoke portion and a tooth portion, the tooth portion being connected to an inner side surface of the yoke portion, the yoke portion having a wire connection portion and an avoidance portion, the wire connection portion and the avoidance portion being located on both sides of the tooth portion, respectively, in an axial direction of the stator frame;

the outer side face that dodges the portion deviates from the tooth is provided with N and crosses the wire casing, and N cross the wire casing and follow the axial direction interval distribution of stator skeleton, dodge the portion keep away from the terminal surface of tooth is provided with M and dodges the breach, M dodges the breach is followed the circumference direction interval distribution of stator skeleton, N is greater than three integers, M is greater than one integer.

In some embodiments, the backbone unit further comprises a shoe connected at an end of the tooth remote from the yoke.

In some embodiments, the connection part is provided with a connection hole for mounting a connection pin.

According to another aspect of the invention, there is provided a motor stator comprising a stator core, a stator frame formed on the stator core, and windings wound on the stator frame, wherein the stator frame is the stator frame.

In some embodiments, the motor stator is a 3-phase 12-slot structure, and the stator backbone units are 12.

According to another aspect of the present invention, there is provided an electric machine comprising the electric machine stator described above.

According to still another aspect of the present invention, there is provided a winding method of the 3-phase 12-slot motor stator, which is applicable to an 8-pole rotor, and includes the following steps:

the winding comprises a U-phase winding, a V-phase winding and a W-phase winding, and the wire passing groove comprises a U-phase wire passing groove, a V-phase wire passing groove and a W-phase wire passing groove;

the U-phase winding is sequentially wound on the 1 st, 4 th, 7 th and 10 th stator framework units, enameled wires of the U-phase winding are led in from the 1 st stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last U-phase winding are sequentially connected into the next U-phase winding through the avoidance notch, the U-phase wire passing groove and the avoidance notch;

the V-phase winding is sequentially wound on the 2 nd, 5 th, 8 th and 11 th stator framework units, enameled wires of the V-phase winding are led in from the 2 nd stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last V-phase winding are sequentially connected into the next V-phase winding through the avoidance notch, the V-phase wire passing groove and the avoidance notch;

the W-phase winding is sequentially wound on the 3 rd, 6 th, 9 th and 12 th stator framework units, enameled wires of the W-phase winding are led in from the 3 rd stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last W-phase winding are sequentially connected into the next W-phase winding through the avoidance notch, the W-phase wire passing groove and the avoidance notch.

According to still another aspect of the present invention, there is provided a winding method of the 3-phase 12-slot motor stator, which is applicable to a 10-pole rotor, and includes the following steps:

the winding comprises a U-phase winding, a V-phase winding and a W-phase winding, and the wire passing groove comprises a U-phase wire passing groove, a V-phase wire passing groove and a W-phase wire passing groove;

the U-phase winding is sequentially wound on the 1 st, 6 th, 7 th and 12 th stator framework units, enameled wires of the U-phase winding are led in from the 1 st stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last U-phase winding are sequentially connected into the next U-phase winding through the avoidance notch, the U-phase wire passing groove and the avoidance notch;

the V-phase winding is sequentially wound on the 2 nd, 3 rd, 8 th and 9 th stator framework units, enameled wires of the V-phase winding are led in from the 2 nd stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last V-phase winding are sequentially connected into the next V-phase winding through the avoidance notch, the V-phase wire passing groove and the avoidance notch;

the W-phase winding is sequentially wound on the 4 th, 5 th, 10 th and 11 th stator framework units, enameled wires of the W-phase winding are led in from the 4 th stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last W-phase winding are sequentially connected into the next W-phase winding through the avoidance notch, the W-phase wire passing groove and the avoidance notch.

In some embodiments, the W-phase winding enamel wire is introduced from the 3 rd stator frame element, extends to the 4 th stator frame element, and starts winding.

By adopting the technical scheme of the invention, the avoidance notch and the wire passing groove for wire passing are arranged on the stator framework, and through the combination of the avoidance notch and the wire passing groove, the same stator structure can be enabled to lead the wire passing of windings of different phases to be mutually noninterfere under the condition of different winding partition, arrangement and wiring caused by different pole numbers, thereby achieving orderly separation of phases, avoiding hidden trouble of interphase short circuit and further improving the product quality. Meanwhile, the three-phase windings with 12 slots and 10 poles are completely arranged, so that the distance between the access ends of the three-phase windings is shortened, and the design wiring of the butt-joint PCB circuit is simpler.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.

Fig. 1 is a top view of a stator frame unit according to an embodiment of the present invention.

FIG. 2 is a front view of a stator frame according to an embodiment of the present invention;

FIG. 3 is a top view of a 3-phase 12-slot structured motor stator according to an embodiment of the present invention;

FIG. 4 is a partial top view of an expanded state of a 3-phase 12-slot structure motor stator according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the windings during winding of 12 slot 8 poles according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of the running track and the passing rule of a 12-slot 8-pole winding according to an embodiment of the present invention, wherein the stator core is removed;

FIG. 7 is a schematic diagram of the windings of a 12 slot 10 pole winding according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of the running track and the wire passing rule during winding of 12 slots and 10 poles according to an embodiment of the present invention, with the stator core removed;

fig. 9 is a schematic diagram of a portion of another trajectory and passing-through rule during winding of a 12-slot 10 pole wire according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments, and it should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The existing fractional slot concentrated winding permanent magnet motor has the same stator structure of 8 poles of 12 slots and 10 poles of 12 slots, and the winding connection is greatly different due to the different numbers of poles of the rotor, so that different winding rules exist for the two poles, different subareas exist, and the mutual interference of UVW three-phase line passing is easily caused in the winding process.

To this end, the present application provides a stator frame, a motor stator, a motor and a winding method of the motor stator to solve one or more of the above problems, and is exemplified below with reference to fig. 1 to 9.

As shown in fig. 1 to 4, the present embodiment provides a stator framework, which includes a plurality of stator framework units, each stator framework unit includes a yoke portion 100, a tooth portion 200 and a shoe portion 300, wherein one end of the tooth portion 200 is connected to an inner side surface of the yoke portion 100, the other end is connected to an inner side surface of the shoe portion 300, so as to form an "i" structure, the yoke portions 100 of the plurality of stator framework units are sequentially connected to form a ring-shaped stator framework, a winding groove is formed between two adjacent tooth portions 200, and a winding 500 is wound on the tooth portion 200.

The stator skeleton is used as an insulating skeleton of the stator core, each stator skeleton unit corresponds to one stator core unit, and correspondingly, the stator core has a structure similar to that of the stator skeleton unit and comprises a stator yoke 400, stator teeth and stator shoes, wherein the stator teeth and the stator shoes are covered by the teeth part 200 and the shoe part 300 of the stator skeleton unit, the stator yokes 400 are attached to the yoke part 100 of the stator skeleton unit, and the stator yokes 400 are sequentially connected to form an annular stator yoke 400.

It should be noted that the stator core may be a chain type stator core of the present embodiment, the stator yokes 400 of each stator core unit are hinged to each other to form a ring-shaped stator core, or may be a full-circle stator core, at this time, the stator yokes 400 of the stator core unit are a ring-shaped whole, and the stator teeth are disposed on the inner side walls of the stator yokes 400 at intervals.

It should be noted that, the number of the present application is two or more and includes two.

Referring to fig. 1 and 2, a yoke portion 100 of the stator frame unit has a wire connection portion 101 and a relief portion 102, the wire connection portion 101 and the relief portion 102 being located at both sides of a tooth portion 200, respectively, in an axial direction of the stator frame, and referring to fig. 2, the wire connection portion 101 is located at an upper side of a stator yoke 400, and the relief portion 102 is located at a lower side of the stator yoke 400.

The wire connection part 101 is provided with a wire connection hole 1011, the wire connection hole 1011 being used for mounting a wire connection pin 1012, see fig. 9, for leading in and out the enamel wire of the winding 500.

The outer side surface of the avoiding portion 102, which faces away from the tooth portion 200, is provided with N through slots 1021, and the N through slots 1021 are distributed at intervals along the axial direction of the stator skeleton, and referring to fig. 2, the N through slots 1021 are distributed at intervals up and down, where N is an integer greater than three.

Meanwhile, the end surface of the avoidance portion 102 far away from the tooth portion 200 is provided with M avoidance notches 1022, and the M avoidance notches 1022 are distributed at intervals along the circumferential direction of the stator skeleton, and referring to fig. 2, the M avoidance notches 1022 are distributed at intervals left and right, where M is an integer greater than one.

It should be noted that, the number of the wire passing slots 1021 is not less than three, at least one UVW three-phase is distributed, at least one, preferably two, avoiding notches 1022 are provided, one is used for wire incoming and one is used for wire outgoing, of course, the number and the size of the wire passing slots 1021 and the avoiding notches 1022 can be flexibly designed according to the slot type of the stator, the slot filling rate, the space position, and the running track of the wire winding nozzle in the winding process, for example, the depth H of the avoiding notches 1022 and the width K of the avoiding notches 1022 can be seen in fig. 6 and 8, and the embodiment is not limited.

By using the technical scheme of the embodiment, when winding starts, taking any phase winding as an example, an enameled wire is introduced into the tooth part 200 through a wiring needle 1012 at the upper part of the stator framework unit to start winding, after winding is completed, the enameled wire comes out from one of the avoidance notches 1022 at the lower part of the stator framework unit, enters one of the wire passing grooves 1021, passes through the wire passing grooves 1021 to be routed to the other stator framework unit, enters into the tooth part 200 from one of the avoidance notches 1022 to start winding, comes out from the other avoidance notch 1022 after winding is completed, and passes through one of the wire passing grooves 1021 to be routed to the other stator framework unit again to continue winding.

Therefore, the stator framework of the application sets up the wire passing groove 1021 for passing the wire and dodges breach 1022 at dodging portion 102, the combination of both, under the same condition of stator structure, no matter how the number of poles of the stator changes, when leading to winding subregion, arrangement, wiring different, the homoenergetic makes the winding of different phases cross the wire mutually noninterfere, accomplish to separate with phase in order, the winding gets into dodge the district through wire passing groove one by one in-line out order, avoids interphase short circuit hidden danger to appear, guarantees product quality.

As shown in fig. 3 and fig. 4, the present embodiment further provides a motor stator, which includes a stator core, a stator frame formed on the stator core, and a winding 500 wound on the stator frame, where the stator frame is the stator frame with the wire passing slot 1021 and the avoiding gap 1022.

In this embodiment, the motor stator is of a 3-phase 12-slot structure, the stator core adopts a chain type stator core, the stator yokes 400 of the 12 stator core units are sequentially hinged, the corresponding stator skeleton units are also 12, and the corresponding stator skeleton units are integrally injection-molded on the corresponding stator core units.

Meanwhile, the embodiment also provides a motor, which comprises the motor stator.

As shown in fig. 5 and 6, the present embodiment further provides a winding method of the 12-slot 8-pole motor stator, which specifically includes the following steps:

the winding 500 is divided into a U-phase winding, a V-phase winding and a W-phase winding, and the wire passing groove 1021 is divided into a U-phase wire passing groove, a V-phase wire passing groove and a W-phase wire passing groove;

the U-phase winding is sequentially wound on the 1 st, 4 th, 7 th and 10 th stator framework units, enameled wires of the U-phase winding are led in from the 1 st stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last U-phase winding are sequentially connected into the next U-phase winding through the avoidance notch, the U-phase wire passing groove and the avoidance notch;

the V-phase winding is sequentially wound on the 2 nd, 5 th, 8 th and 11 th stator framework units, enameled wires of the V-phase winding are led in from the 2 nd stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last V-phase winding are sequentially connected into the next V-phase winding through the avoidance notch, the V-phase wire passing groove and the avoidance notch;

the W-phase winding is sequentially wound on the 3 rd, 6 th, 9 th and 12 th stator framework units, enameled wires of the W-phase winding are led in from the 3 rd stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last W-phase winding are sequentially connected into the next W-phase winding through the avoidance notch, the W-phase wire passing groove and the avoidance notch.

In this embodiment, the winding arrangement of the 12-slot 8-pole is the same as that in the prior art, and the following table shows:

referring to fig. 6, when the U-phase winding is wound, an enameled wire is introduced into the tooth 200 through a U-phase connection pin at the upper part of the 1 st stator frame unit to start winding, after winding is completed, the enameled wire comes out from an avoidance notch 1022 at the right side of the lower part of the 1 st stator frame unit, enters the uppermost wire passing slot 1021, goes into the 4 th stator frame unit along the uppermost wire passing slot 1021, enters the tooth 200 from the avoidance notch 1022 at the left side of the 4 th stator frame unit to start winding, comes out from the avoidance notch 1022 at the right side after winding is completed, goes into the 7 th stator frame unit again through the uppermost wire passing slot 1021, starts winding from the avoidance notch 1022 at the left side of the 7 th stator frame unit, goes out from the avoidance notch 1022 at the right side after winding is completed, goes into the 10 th stator frame unit again through the uppermost wire passing slot 1021, starts winding from any one of the avoidance notches 1022 at the 10 th stator frame unit to enter the tooth 200, comes out directly from the upper part of the tooth 200 after winding is completed, and then goes into the common connection pin at the upper part of the 11 th stator frame unit to complete winding.

When the V-phase winding is wound, an enameled wire is introduced into the tooth part 200 through a V-phase wiring needle at the upper part of the 2 nd stator framework unit to start winding, after winding is completed, the enameled wire comes out from an avoidance notch 1022 at the right side of the lower part of the 2 nd stator framework unit, enters into a middle wire passing groove 1021, runs into the 5 th stator framework unit along the middle wire passing groove 1021, enters into the tooth part 200 from the avoidance notch 1022 at the left side of the 5 th stator framework unit to start winding, comes out from the avoidance notch 1022 at the right side after winding is completed, runs into the 8 th stator framework unit again through the middle wire passing groove 1021, starts winding from the avoidance notch 1022 at the right side after winding is completed, comes out from the upper part of the tooth part 200, and is directly wound on the public wiring needle at the upper part of the 11 th stator framework unit after winding is completed, so that the V-phase winding is completed.

When the W-phase winding is wound, an enameled wire is introduced into the tooth 200 through a W-phase wiring needle at the upper part of the 3 rd stator framework unit to start winding, after winding is completed, the enameled wire comes out from an avoidance notch 1022 at the right side of the lower part of the 3 rd stator framework unit, enters the lowest wire passing groove 1021, runs into the 6 th stator framework unit along the lowest wire passing groove 1021, starts winding after entering the tooth 200 from an avoidance notch 1022 at the left side of the 6 th stator framework unit, comes out from an avoidance notch 1022 at the right side after winding is completed, runs into the 9 th stator framework unit again through the lowest wire passing groove 1021, starts winding after winding is completed, comes out from an avoidance notch 1022 at the left side of the 9 th stator framework unit, runs into the 12 th stator framework unit again through the lowest wire passing groove 1021, starts winding after winding from any one of the 12 th stator framework units to enter the tooth 200, directly comes out from the upper part of the tooth 200, and is connected to the W-phase winding needle at the upper part of the 11 th stator framework unit to complete winding.

Therefore, the three-phase enameled wires are distributed into different wire passing grooves 1021, the enameled wires can be conveniently led into the corresponding wire passing grooves 1021 through the avoiding gaps 1022, winding wire passing of different phases are not interfered with each other, the winding phases are orderly separated, the winding enters the avoiding area sequentially through the winding grooves one in one out, and the interphase short-circuit hidden danger is avoided.

As shown in fig. 7 and 8, the present embodiment further provides a winding method of the 12-slot 10-pole motor stator, which specifically includes the following steps:

the U-phase winding is sequentially wound on the 1 st, 6 th, 7 th and 12 th stator framework units, enameled wires of the U-phase winding are led in from the 1 st stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last U-phase winding are sequentially connected into the next U-phase winding through the avoidance notch, the U-phase wire passing groove and the avoidance notch;

the V-phase winding is sequentially wound on the 2 nd, 3 rd, 8 th and 9 th stator framework units, enameled wires of the V-phase winding are led in from the 2 nd stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last V-phase winding are sequentially connected into the next V-phase winding through the avoidance notch, the V-phase wire passing groove and the avoidance notch;

the W-phase winding is sequentially wound on the 4 th, 5 th, 10 th and 11 th stator framework units, enameled wires of the W-phase winding are led in from the 4 th stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last W-phase winding are sequentially connected into the next W-phase winding through the avoidance notch, the W-phase wire passing groove and the avoidance notch.

In this embodiment, the winding arrangement of the 12 slots 10 is completely different from the prior art, and the following table is specific:

with reference to fig. 8,U, when winding is performed on the phase winding, an enameled wire is introduced into the tooth 200 through a U-phase wiring needle at the upper part of the 1 st stator frame unit to start winding, after winding is completed, the enameled wire comes out from an avoidance notch 1022 at the right side of the lower part of the 1 st stator frame unit, enters the uppermost wire passing slot 1021, enters the 6 th stator frame unit along the uppermost wire passing slot 1021, enters the tooth 200 from an avoidance notch 1022 at the left side of the 6 th stator frame unit to start winding, comes out from an avoidance notch 1022 at the right side after winding is completed, enters the 7 th stator frame unit again through the uppermost wire passing slot 1021, starts winding from an avoidance notch 1022 at the left side of the 7 th stator frame unit, comes out from an avoidance notch 1022 at the left side after winding is completed, comes out from an avoidance notch 1022 at the right side of the 12 th stator frame unit again, enters the tooth 200 from an avoidance notch 1022 at the right side of the 12 th stator frame unit to start winding, comes out from an avoidance notch 1022 at the left side after winding is completed, passes through an avoidance notch 1022 at the right side of the middle stator frame unit, enters the tooth 11 th stator frame unit to enter the tooth 200 at the right side of the winding, and passes through the common wiring needle 11, and the winding is completed.

When the V-phase winding is wound, an enameled wire is introduced into the tooth part 200 through a V-phase wiring needle at the upper part of the 2 nd stator framework unit to start winding, after winding is completed, the enameled wire comes out from an avoidance notch 1022 at the right side of the lower part of the 2 nd stator framework unit, enters the middle wire passing groove 1021, goes into the 3 rd stator framework unit along the middle wire passing groove 1021, enters the tooth part 200 from the avoidance notch 1022 at the right side of the 3 rd stator framework unit to start winding, comes out from the avoidance notch 1022 at the left side after winding is completed, goes through the lowest wire passing groove 1021 to the 8 th stator framework unit, enters the tooth part 200 from the avoidance notch 1022 at the left side of the 8 th stator framework unit to start winding, comes out from the avoidance notch 1022 at the left side after winding is completed, goes into the 9 th stator framework unit again through the lowest wire passing groove 1021, comes out from the avoidance notch 1022 at the left side of the 9 th stator framework unit to start winding, comes out from the avoidance notch 1022 at the right side after winding is completed, goes through the wire passing through the left side of the stator framework unit 11 to the left side of the stator framework unit to enter the tooth part 200, and passes through the common wiring wire winding 11 at the left side of the winding wire passing through the 11V-phase winding framework unit to finish.

When the W-phase winding is wound, an enameled wire is introduced into the tooth part 200 through a W-phase wiring needle at the upper part of the 4 th stator framework unit to start winding, after winding is completed, the enameled wire comes out from an avoidance notch 1022 at the left side of the lower part of the 4 th stator framework unit, enters into a middle wire passing groove 1021, runs into the 5 th stator framework unit along the middle wire passing groove 1021, enters into the tooth part 200 from the avoidance notch 1022 at the left side of the 5 th stator framework unit to start winding, comes out from the avoidance notch 1022 at the right side after winding is completed, runs into the 10 th stator framework unit again through the middle wire passing groove 1021, starts winding from the avoidance notch 1022 at the right side after winding is completed, comes out from the upper part of the tooth part 200, and directly comes out from the upper part of the tooth part 200 after winding is completed, and then comes out from the public wiring needle at the upper part of the 11 th stator framework unit to complete winding.

Therefore, the design of the avoidance notch 1022 can enable the winding mode to be more flexible, the enameled wire can be wound anticlockwise along the tooth 200 and also can be wound clockwise along the tooth 200, the enameled wire can come out from any winding groove on two sides of the tooth 200, enters the wire passing groove 1201 through the avoidance notch 1022, and can also enter the winding groove on any side of the tooth 200 through the avoidance notch 1022 to start winding.

As shown in fig. 8, the enameled wire can enter the tooth 200 from the left avoiding notch 1022, and after winding, the enameled wire comes out from the right avoiding notch 1022 as shown by U6 in the figure; the wire can enter the tooth 200 from the right avoiding notch 1022, and then exit from the left avoiding notch 1022 after the wire winding is finished, as shown by V3 in the figure; the wire can enter the tooth part 200 from the left avoiding notch 1022, and after the wire winding is finished, the wire can come out from the left avoiding notch 1022, as shown by U7 in the figure; of course, the wire may enter the tooth 200 from the right escape notch 1022, and exit from the right escape notch 1022 after the winding is completed.

In addition, the 12-slot 10-pole three-phase windings are completely arranged, so that the distance between the three-phase winding access ends is shortened, and meanwhile, the three-phase winding access ends are subjected to centralized processing, so that the design wiring of the butt joint PCB circuit is simpler.

Referring to fig. 8, in the 12-slot 10-pole motor stator of the embodiment, the W-phase enameled wire is connected from the 4 th stator frame unit, and the three-phase connection ends are 1, 2 and 4, and are not close enough to the 12-slot 8-pole connection ends, so that the W-phase connection end of the 12-slot 10-pole motor stator is further optimized, specifically as shown in fig. 9, the W-phase enameled wire is connected to the connection pin of the 3 rd stator frame unit, so that the distance of the three-phase winding connection end can be further shortened, then the three-phase enameled wire is extended to the 4 th stator frame unit, winding is started, and the wiring mode during winding is the same as that above.

From the above description, it can be seen that, by the combination of avoiding the notch and the wire passing groove, the winding wire passing wires of different phases can be mutually noninterfered, the phase and the phase can be orderly separated, the hidden danger of interphase short circuit is avoided, and the product quality is further improved.

In the description of the present invention, it should be understood that the terms "center", "front, rear, upper, lower, left, right", "horizontal, vertical, horizontal", and "top, bottom", etc. generally refer to an orientation or a positional relationship based on that shown in the drawings, only for convenience of describing the present invention and simplifying the description, and that these orientation words do not indicate or imply that the apparatus or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. It will be understood by those of ordinary skill in the art that the specific meaning of the terms described above in this application

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The stator framework comprises a plurality of stator framework units, wherein each stator framework unit comprises a yoke part (100) and a tooth part (200), the tooth parts (200) are connected to the inner side surfaces of the yoke parts (100), each yoke part (100) is provided with a wiring part (101) and an avoidance part (102), and the wiring parts (101) and the avoidance parts (102) are respectively positioned at two sides of the tooth parts (200) along the axial direction of the stator framework;

the method is characterized in that:

dodge portion (102) deviate from the lateral surface of tooth portion (200) is provided with N and crosses wire casing (1021), and N cross wire casing (1021) are followed the axial direction interval distribution of stator skeleton, dodge portion (102) keep away from the terminal surface of tooth portion (200) is provided with M and dodges breach (1022), and M dodges breach (1022) are followed the circumference direction interval distribution of stator skeleton, N is the integer that is greater than three, M is the integer that is greater than one.

2. The stator frame of claim 1, wherein: the backbone unit further comprises a shoe (300), the shoe (300) being connected at an end of the tooth (200) remote from the yoke (100).

3. The stator frame of claim 1, wherein: a wiring hole (1011) is formed in the wiring part (101), and the wiring hole (1011) is used for installing a wiring needle (1012).

4. A motor stator comprising a stator core, a stator frame formed on the stator core, and a winding wound on the stator frame, wherein the stator frame is the stator frame of any one of claims 1-3.

5. The motor stator of claim 4, wherein: the motor stator is of a 3-phase 12-slot structure, and the number of stator framework units is 12.

6. An electric motor, characterized in that: a stator for an electric machine comprising the stator as claimed in claim 4 or 5.

7. A winding method applied to the motor stator of claim 5, applicable to 8-pole rotors, characterized in that: the method comprises the following steps:

the winding comprises a U-phase winding, a V-phase winding and a W-phase winding, and the wire passing groove comprises a U-phase wire passing groove, a V-phase wire passing groove and a W-phase wire passing groove;

the U-phase winding is sequentially wound on the 1 st, 4 th, 7 th and 10 th stator framework units, enameled wires of the U-phase winding are led in from the 1 st stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last U-phase winding are sequentially connected into the next U-phase winding through the avoidance notch, the U-phase wire passing groove and the avoidance notch;

the V-phase winding is sequentially wound on the 2 nd, 5 th, 8 th and 11 th stator framework units, enameled wires of the V-phase winding are led in from the 2 nd stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last V-phase winding are sequentially connected into the next V-phase winding through the avoidance notch, the V-phase wire passing groove and the avoidance notch;

the W-phase winding is sequentially wound on the 3 rd, 6 th, 9 th and 12 th stator framework units, enameled wires of the W-phase winding are led in from the 3 rd stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last W-phase winding are sequentially connected into the next W-phase winding through the avoidance notch, the W-phase wire passing groove and the avoidance notch.

8. A winding method applied to the motor stator of claim 5, applicable to a 10-pole rotor, characterized in that: the method comprises the following steps:

the winding comprises a U-phase winding, a V-phase winding and a W-phase winding, and the wire passing groove comprises a U-phase wire passing groove, a V-phase wire passing groove and a W-phase wire passing groove;

the U-phase winding is sequentially wound on the 1 st, 6 th, 7 th and 12 th stator framework units, enameled wires of the U-phase winding are led in from the 1 st stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last U-phase winding are sequentially connected into the next U-phase winding through the avoidance notch, the U-phase wire passing groove and the avoidance notch;

the V-phase winding is sequentially wound on the 2 nd, 3 rd, 8 th and 9 th stator framework units, enameled wires of the V-phase winding are led in from the 2 nd stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last V-phase winding are sequentially connected into the next V-phase winding through the avoidance notch, the V-phase wire passing groove and the avoidance notch;

the W-phase winding is sequentially wound on the 4 th, 5 th, 10 th and 11 th stator framework units, enameled wires of the W-phase winding are led in from the 4 th stator framework unit and led out from the 11 th stator framework unit, and enameled wires of the last W-phase winding are sequentially connected into the next W-phase winding through the avoidance notch, the W-phase wire passing groove and the avoidance notch.

9. The method of winding a stator of an electric machine of claim 8, wherein: the enameled wire of the W-phase winding is led in from the 3 rd stator framework unit and extends to the 4 th stator framework unit to start winding.

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