CN115622280A - Winding method, motor stator and motor - Google Patents
Winding method, motor stator and motor Download PDFInfo
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- CN115622280A CN115622280A CN202211223288.XA CN202211223288A CN115622280A CN 115622280 A CN115622280 A CN 115622280A CN 202211223288 A CN202211223288 A CN 202211223288A CN 115622280 A CN115622280 A CN 115622280A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The application relates to a winding method, a motor stator and a motor, wherein the winding method of a target winding comprises the following steps: performing multiple rounds of closed-loop winding from bottom to top on each target stator tooth group; a closed loop winding cycle comprising: winding at least half of coils on the N target stator teeth respectively in a mode that winding directions of adjacent stator teeth are opposite along the directions from the 1 st target stator tooth to the Nth target stator tooth; and winding at least half of coils on the N target stator teeth respectively according to the opposite winding directions of the adjacent stator teeth along the direction from the Nth target stator tooth to the 1 st target stator tooth. Therefore, in the winding process of the target winding, at least two adjacent continuous stator teeth can be sequentially wound one by one to form an outer coil layer, the number of winding turns in the stator slot with the same area is increased, the slot fullness is improved as much as possible, and the performance of the motor is improved.
Description
Technical Field
The application relates to the technical field of motors, in particular to a winding method, a motor stator and a motor.
Background
With the wider application of the motor, the performance requirements of users on the motor are higher and higher. The motor includes a motor stator including a plurality of stator teeth, stator slots between adjacent stator teeth, and windings wound on each stator tooth. After the winding is formed by adopting the existing single-tooth winding mode, the residual space of the stator slot between the adjacent stator teeth is larger, and the slot filling rate also has a lifting space.
Therefore, it is an urgent need to provide a winding method capable of increasing the slot fullness.
Disclosure of Invention
In view of the above-mentioned shortcomings of the related art, the present application aims to provide a winding method, a motor stator and a motor, and aims to solve the technical problem of low slot fullness rate of the existing winding method.
The application provides a winding method, which is applied to a motor stator, wherein the motor stator comprises a stator core and a target winding; the stator core comprises a plurality of stator teeth arranged at intervals along the circumferential direction, a stator slot is formed between every two adjacent stator teeth, the stator core is provided with at least one target stator tooth group, the target stator tooth group is composed of N continuous adjacent target stator teeth, and N > =2,N target stator teeth are sequentially marked as the 1 st target stator tooth to the Nth target stator tooth in a clockwise sequence; the winding method of the target winding comprises the following steps:
performing multiple rounds of closed-loop winding from bottom to top on each target stator tooth group; a closed loop winding cycle comprising: winding at least half of a turn on the N target stator teeth respectively in a mode that winding directions of adjacent stator teeth are opposite along the directions from the 1 st target stator tooth to the Nth target stator tooth; and winding at least half of coils on the N target stator teeth respectively in a mode that winding directions of adjacent stator teeth are opposite along the direction from the Nth target stator tooth to the 1 st target stator tooth.
Optionally, before the bottom-to-top multi-turn closed-loop winding for each of the target stator tooth groups, the method further includes:
and each target stator tooth is wound for the first time to obtain a plurality of corresponding initial windings, a target winding slot for a lead to enter and accommodate the lead is formed in a common stator slot of two adjacent initial windings in each target stator tooth group, and the width of the target winding slot is more than or equal to one lead width and less than 4 lead widths.
Optionally, the width of the target winding slot is greater than or equal to one time of the wire width and less than 2 times of the wire width.
Optionally, the number of winding turns of the closed-loop winding on each target stator tooth is equal for each round.
Optionally, the number of winding turns of the closed-loop winding of all turns on each of the target stator teeth is equal.
Optionally, the number of winding turns of the closed-loop winding on each target stator tooth per turn is 1.
Optionally, the stator core has a plurality of the target stator tooth groups, and each of the target stator tooth groups has an equal number of target stator teeth.
Optionally, each of the target stator tooth groups has a target number of stator teeth of 2 or 3.
Optionally, the stator core has at least two adjacently disposed target stator tooth groups.
Alternatively, all the target stator tooth groups are arranged next to each other in sequence.
Optionally, the stator core further includes a single stator tooth, and one single stator tooth is disposed between any two of the target stator tooth groups.
Optionally, the motor stator has a plurality of phases, and M stator teeth of the same phase that are successively adjacent, among the plurality of stator teeth, serve as one target stator tooth group, where M > =2.
Based on the same inventive concept, the application also provides a motor stator, which comprises a stator core and a target winding, wherein the stator core comprises a plurality of stator teeth arranged at intervals along the circumferential direction, a stator slot is formed between every two adjacent stator teeth, the stator core is provided with at least one target stator tooth group, the target stator tooth group is composed of N continuous adjacent target stator teeth, and N > =2,N target stator teeth are sequentially marked as the 1 st target stator tooth to the N th target stator tooth in a clockwise order; the target winding is formed by the winding method as described above.
Based on the same inventive concept, the present application also provides an electric machine comprising the electric machine stator as described above.
Advantageous effects
The application provides a winding method, a motor stator and a motor, wherein the motor stator comprises a stator core and a target winding; the stator core comprises a plurality of stator teeth arranged at intervals along the circumferential direction, stator slots are formed between every two adjacent stator teeth, the stator core is provided with at least one target stator tooth group, each target stator tooth group consists of N continuous adjacent target stator teeth, and N > =2,N target stator teeth are sequentially marked as the 1 st target stator tooth to the Nth target stator tooth according to the clock sequence; the winding method of the target winding comprises the following steps: performing bottom-to-top closed-loop winding on each target stator tooth group; a closed loop winding cycle comprising: winding at least half of coils on the N target stator teeth respectively in a mode that winding directions of adjacent stator teeth are opposite along the directions from the 1 st target stator tooth to the Nth target stator tooth; and winding at least half of coils on the N target stator teeth respectively in a mode that winding directions of adjacent stator teeth are opposite along the direction from the Nth target stator tooth to the 1 st target stator tooth. Therefore, in the winding process of the target winding, at least two adjacent continuous stator teeth can be sequentially wound one by one to form an outer coil layer, the number of winding turns in the stator slot with the same area is increased, the slot fullness is improved as much as possible, and the performance of the motor is improved.
Drawings
Fig. 1 is a first schematic structural diagram of a stator of an electric machine according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart of a winding method according to an embodiment of the present disclosure;
FIG. 3 is a winding schematic diagram illustrating a specific winding method according to an embodiment of the present disclosure;
FIG. 4 is a schematic winding diagram illustrating another exemplary winding method according to an embodiment of the present disclosure;
FIG. 5 is a schematic winding diagram illustrating another exemplary winding method according to an embodiment of the present disclosure;
FIG. 6 is a schematic winding diagram illustrating another exemplary winding method according to an embodiment of the present disclosure;
description of reference numerals:
100-a motor stator; 10-a stator core; 22-target winding; 21-primary winding; 11-stator teeth; 12-stator slots; 101-target stator tooth set; 111-target stator teeth.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
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. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
With the wider application of the motor, the performance requirements of users on the motor are higher and higher. The motor includes a motor stator including a plurality of stator teeth, stator slots located between adjacent stator teeth, and windings wound around each stator tooth. After the winding is formed by adopting the existing single-tooth winding mode, the residual space of the stator slot between the adjacent stator teeth is larger, and the slot filling rate also has a lifting space. Therefore, it is an urgent need to provide a winding method capable of increasing the slot fullness.
Based on this, the present application intends to provide a solution to the above technical problem, the details of which will be explained in the following embodiments.
The embodiments of the present application
The scheme of the embodiment elaborates a motor stator, a winding method of a target winding in the motor stator and a motor.
Please refer to fig. 1 to fig. 6, which are schematic structural diagrams or flowcharts of components in the motor stator disclosed in the present embodiment.
As shown in fig. 1, the present embodiment provides a motor stator 100, and the motor stator 100 includes a stator core 10 and a target winding 22. The stator core 10 includes a plurality of stator teeth 11 arranged at intervals along the circumferential direction, a stator slot 12 is formed between two adjacent stator teeth 11, the stator core 10 has at least one target stator tooth group 101, the target stator tooth group 101 is composed of N target stator teeth 111 which are continuously adjacent, and N > =2,N target stator teeth 111 are sequentially recorded as the 1 st target stator tooth 111 to the nth target stator tooth 111 in the clockwise order.
As shown in fig. 2, the winding method of the target winding 22 at least includes the following steps:
s20, performing multi-round closed-loop winding from the bottom to the top on each target stator tooth group 101; a closed loop winding cycle comprising: winding at least half of turns on the N target stator teeth 111 respectively in a mode that winding directions of adjacent stator teeth are opposite along the directions from the 1 st target stator tooth 111 to the Nth target stator tooth 111; and winding at least half of a turn on the N target stator teeth 111 along the direction from the Nth target stator tooth 111 to the 1 st target stator tooth 111 respectively in a mode that the winding directions of the adjacent stator teeth are opposite.
It should be understood that in the present embodiment, several inner coil layers are wound on each target stator tooth 111, and in order to better utilize the remaining slot space, more wires can be wound on each target stator tooth 111 to improve the slot filling ratio and the motor performance, the present embodiment employs multiple rounds of closed-loop winding from bottom to top on each target stator tooth group 101 to form an outer coil layer on each target stator tooth 111. The present embodiment does not limit the winding manner of the inner coil layer on each target stator tooth 111.
In an exemplary embodiment, before performing a bottom-to-top multiple-turn closed-loop winding for each target stator tooth group 101, the method further includes:
and S10, performing first winding on each target stator tooth 111 to obtain a plurality of corresponding initial windings 21. Specifically, a single-tooth individual winding method may be used to wind several inner coil layers on each target stator tooth 111 to form the initial winding 21. The adjacent two primary windings 21 in each target stator tooth group 101 are formed with target winding slots for the wire to enter and accommodate in their common stator slot 12, the width of the target winding slot is greater than or equal to one time the wire width and less than 4 times the wire width, optimally, the width of the target winding slot is the minimum width that can be achieved by the single-tooth single-winding process, the minimum width depends on the processing technology, and optimally, the width of the wire is 1 to 2 times the wire width.
It is understood that the target winding 22 of the present embodiment includes the initial winding 21 and a plurality of rounds of closed-loop winding wound on the initial winding 21. In other embodiments, the target winding 22 may include only the multiple turns of closed loop winding.
It should also be understood that the present embodiment also provides flexibility in the winding pattern between each of the multiple rounds of closed-loop winding. In an exemplary embodiment, the number of winding turns of each of the closed-loop windings on each of the target stator teeth 111 may be set to be equal for each of the closed-loop windings, and the number of winding turns of each of the closed-loop windings on adjacent target stator teeth 111 may also be set to be unequal for each of the closed-loop windings. For all the turns of the closed-loop winding, the number of winding turns of the closed-loop winding of all the turns on each target stator tooth 111 may be equal, or the number of winding turns of the closed-loop winding of part of the turns on each target stator tooth 111 may be equal; when the number of winding turns on each target stator tooth 111 is equal, the winding process can be greatly simplified. Meanwhile, the number of winding turns of each round of closed-loop winding on each target stator tooth 111 can be set to be 1 turn, 2 turns, 4 turns or other values, and optimally, the number of winding turns on each target stator tooth 111 is 1 turn. This embodiment can rationally set up the number of winding turns between each round of closed loop wire winding according to actual demand, is adapted to the irregular target wire winding groove of filling shape, increases the number of turns in the target wire winding groove as far as possible, promotes the groove filling rate.
It should also be understood that the target stator tooth 111 of the present embodiment can be understood as belonging to the stator tooth 11 in the target stator tooth group 101, and the present embodiment can also flexibly set the specific number of the target stator tooth group 101 and the target stator tooth 111 included therein. In the exemplary embodiment, the stator core 10 has a plurality of target stator tooth groups 101, and each target stator tooth group 101 has an equal number of target stator teeth 111. On this basis, the target number of stator teeth of each target stator tooth group 101 may also be set to 2 or 3. In other exemplary embodiments, the stator core 10 has a plurality of target stator tooth groups 101 divided into one or more first target stator tooth groups composed of 2 target stator teeth 111 and one or more second target stator tooth groups composed of 3 target stator teeth 111. In addition, in the present embodiment, the plurality of target stator tooth groups 101 may be disposed adjacently or may be disposed at intervals. In the exemplary embodiment, the stator core 10 has at least two target stator tooth groups 101 adjacently disposed, on the basis of which all the target stator tooth groups 101 may be sequentially adjacently disposed. In other exemplary embodiments, the stator core 10 has a plurality of target stator tooth groups 101 arranged at intervals, the stator core 10 further includes a single stator tooth, and one single stator tooth is arranged between any two target stator tooth groups 101. And the winding can be formed by adopting a single-tooth independent winding mode aiming at a single stator tooth. It is understood that the stator core 10 of the present embodiment may include different types of windings, wherein some of the windings are the aforementioned target windings, and other windings may be conventional single-tooth independent windings, and may also be other types of windings.
It should also be understood that the present embodiment may also select the target stator tooth set 101 based on the in-phase type of the motor. In the exemplary embodiment, motor stator 100 has multiple phases, not limited to 2, 3, or 5 phases. Of the plurality of stator teeth 11, M stator teeth of the same phase that are successively adjacent are regarded as one target stator tooth group, where M > =2.
For better understanding, the present embodiment also provides several examples for the winding method of the single target winding 22 in connection with practical application scenarios, but the application of the present invention is not limited to these examples.
In an exemplary embodiment, referring to fig. 3 together, each target stator tooth group 101 includes 2 adjacent target stator teeth 111, and each target stator tooth 111 has wound thereon a number of inner coil layers (not shown). Subsequently, performing multiple rounds of closed-loop winding from bottom to top on each target stator tooth group 101 so as to wind an outer coil layer on each target stator tooth 111; each round of closed loop winding comprises: winding half turns on the 2 target stator teeth 111 along the directions from the 1 st target stator tooth 111 to the 2 nd target stator tooth 111 respectively in a manner that the winding directions of the adjacent stator teeth are opposite; and then winding half-turns on the 2 target stator teeth 111 along the direction from the 2 nd target stator tooth 111 to the 1 st target stator tooth 111 respectively according to the mode that the winding directions of the adjacent stator teeth are opposite, so as to obtain the target winding 22.
In an exemplary embodiment, referring to fig. 4 together, each target stator tooth group 101 includes 2 adjacent target stator teeth 111, and each target stator tooth 111 has wound thereon a number of inner coil layers (not shown). Subsequently, a plurality of rounds of closed-loop winding from bottom to top are carried out on each target stator tooth group 101, so that each target stator tooth 111 is wound with an outer coil layer; each round of closed loop winding comprises: winding the 2 target stator teeth 111 for one turn respectively in a mode that winding directions of adjacent stator teeth are opposite along the directions from the 1 st target stator tooth 111 to the 2 nd target stator tooth 111; and winding the 2 nd target stator tooth 111 to the 1 st target stator tooth 111 for one turn respectively on the 2 nd target stator tooth 111 along the direction from the 2 nd target stator tooth 111 to the 1 st target stator tooth 111 in a manner that the winding directions of adjacent stator teeth are opposite to each other, so as to obtain a target winding 22.
In an exemplary embodiment, referring to fig. 5, each target stator tooth group 101 includes 3 adjacent target stator teeth 111, and each target stator tooth 111 has a plurality of inner coil layers (not shown) wound thereon. Subsequently, a plurality of rounds of closed-loop winding from bottom to top are carried out on each target stator tooth group 101, so that each target stator tooth 111 is wound with an outer coil layer; each round of closed loop winding comprises: winding half circles on 3 target stator teeth 111 respectively in a mode that winding directions of adjacent stator teeth are opposite along the directions from the 1 st target stator tooth 111 to the 3 rd target stator tooth 111; and respectively winding a half turn or a half turn on the 3 target stator teeth 111 along the direction from the 3 rd target stator tooth 111 to the 1 st target stator tooth 111 in a mode that the winding directions of the adjacent stator teeth are opposite to each other to obtain a target winding 22.
In an exemplary embodiment, referring to fig. 6 together, each target stator tooth group 101 includes 3 adjacent target stator teeth 111, and each target stator tooth 111 has wound thereon several inner coil layers (not shown). Subsequently, a plurality of rounds of closed-loop winding from bottom to top are carried out on each target stator tooth group 101, so that each target stator tooth 111 is wound with an outer coil layer; each round of closed loop winding comprises: winding the 3 target stator teeth 111 for one and a half turns respectively in a mode that the winding directions of the adjacent stator teeth are opposite along the directions from the 1 st target stator tooth 111 to the 3 rd target stator tooth 111; and respectively winding a half turn or a half turn on the 3 target stator teeth 111 along the direction from the 3 rd target stator tooth 111 to the 1 st target stator tooth 111 in a mode that the winding directions of the adjacent stator teeth are opposite to each other to obtain a target winding 22.
In the foregoing exemplary embodiments, 2 adjacent target stator teeth are wound one by one to form an outer coil layer according to a winding method similar to the 8-shaped winding method, or 3 adjacent target stator teeth are wound one by one to form an outer coil layer according to a continuous winding method, in the winding process, the winding difficulty on each target stator tooth is basically consistent, the slope of the wires on two sides of the same target stator tooth is also small, side slipping is not easily generated, the obtained winding structure is more stable and reliable, and the slot filling rate is also improved.
The present embodiment also provides an electric machine comprising a stator of any of the electric machines set forth above. Because the motor adopts the stator core with higher slot filling rate, the performance of the motor is better, and the use requirement of a user can be better met.
It should be understood that the application of the present application is not limited to the above examples, and that modifications or changes may be made by those skilled in the art based on the above description, and all such modifications and changes are intended to fall within the scope of the appended claims.
Claims (14)
1. The winding method is characterized by being applied to a motor stator, wherein the motor stator comprises a stator iron core and a target winding; the stator core comprises a plurality of stator teeth arranged at intervals along the circumferential direction, a stator slot is formed between every two adjacent stator teeth, the stator core is provided with at least one target stator tooth group, the target stator tooth group is composed of N continuous adjacent target stator teeth, and N > =2,N target stator teeth are sequentially marked as the 1 st target stator tooth to the Nth target stator tooth in a clockwise sequence; the winding method of the target winding comprises the following steps:
performing multiple rounds of closed-loop winding from bottom to top on each target stator tooth group; a closed loop winding cycle comprising: winding at least half of coils on the N target stator teeth respectively in a mode that winding directions of adjacent stator teeth are opposite along the directions from the 1 st target stator tooth to the Nth target stator tooth; and winding at least half of coils on the N target stator teeth respectively in a mode that winding directions of adjacent stator teeth are opposite along the direction from the Nth target stator tooth to the 1 st target stator tooth.
2. The winding method according to claim 1, further comprising, before said bottom-to-top multiple-turn closed-loop winding of each of said target sets of stator teeth:
and each target stator tooth is wound for the first time to obtain a plurality of corresponding initial windings, a target winding slot for a lead to enter and accommodate the lead is formed in a common stator slot of two adjacent initial windings in each target stator tooth group, and the width of the target winding slot is more than or equal to one lead width and less than 4 lead widths.
3. The winding method according to claim 2, wherein the width of the target winding groove is equal to or greater than one wire width and less than 2 wire widths.
4. The winding method according to claim 2, wherein the number of winding turns of each of the closed loops of winding on each of the target stator teeth is equal.
5. The winding method according to claim 3, wherein the number of winding turns of the closed-loop winding of all the turns on each of the target stator teeth is equal.
6. The winding method according to claim 5, wherein the number of windings of each round of the closed loop winding on each target stator tooth is 1.
7. The winding method according to any one of claims 1 to 6, wherein said stator core has a plurality of said target stator tooth groups, each of said target stator tooth groups having an equal number of target stator teeth.
8. The winding method according to claim 7, wherein each of the target stator tooth groups has a target stator tooth number of 2 or 3.
9. The winding method according to any one of claims 1 to 6, wherein said stator core has at least two of said target stator tooth groups adjacently disposed.
10. The winding method of claim 9, wherein all of said target stator tooth groups are arranged next to each other in sequence.
11. The winding method according to any one of claims 1 to 6, wherein said stator core further comprises a single stator tooth, and one single stator tooth is provided between any two of said target stator tooth groups.
12. The winding method according to any one of claims 1 to 6, wherein the motor stator has a plurality of phases, and M stator teeth of the same phase that are successively adjacent among a plurality of the stator teeth serve as one of the target stator tooth groups, wherein M > =2.
13. A motor stator is characterized by comprising a stator core and a target winding, wherein the stator core comprises a plurality of stator teeth arranged at intervals along the circumferential direction, a stator slot is formed between every two adjacent stator teeth, the stator core is provided with at least one target stator tooth group, the target stator tooth group is composed of N continuous adjacent target stator teeth, and N > =2,N target stator teeth are sequentially marked as the 1 st target stator tooth to the Nth target stator tooth in a clockwise sequence; the target winding is formed by the winding method as claimed in any one of claims 1 to 12.
14. An electrical machine, characterized in that the electrical machine comprises a machine stator according to claim 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211223288.XA CN115622280A (en) | 2022-10-08 | 2022-10-08 | Winding method, motor stator and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211223288.XA CN115622280A (en) | 2022-10-08 | 2022-10-08 | Winding method, motor stator and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115622280A true CN115622280A (en) | 2023-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211223288.XA Pending CN115622280A (en) | 2022-10-08 | 2022-10-08 | Winding method, motor stator and motor |
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| Country | Link |
|---|---|
| CN (1) | CN115622280A (en) |
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2022
- 2022-10-08 CN CN202211223288.XA patent/CN115622280A/en active Pending
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