CN115566820B - Permanent magnet roller stator core and winding offline method of stator core - Google Patents
Permanent magnet roller stator core and winding offline method of stator core Download PDFInfo
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- CN115566820B CN115566820B CN202211365988.2A CN202211365988A CN115566820B CN 115566820 B CN115566820 B CN 115566820B CN 202211365988 A CN202211365988 A CN 202211365988A CN 115566820 B CN115566820 B CN 115566820B
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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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to the technical field of external rotor motors, and provides a permanent magnet roller stator core which comprises a plurality of stator punching sheets, stator windings embedded and wound on the stator punching sheets, and a first pressing plate and a second pressing plate which are pressed and installed on the stator punching sheets.
Description
Technical Field
The invention relates to the technical field of external rotor motors, in particular to a permanent magnet roller stator core and a winding offline method of the stator core.
Background
At present, a permanent magnet roller stator mostly adopts scattered embedded coils, and the stator punching sheet integral mechanism is as follows: the left side and the right side of the tooth part of the stator are parallel; the upper end and the lower end of the stator groove are narrow in closing end and wide in the other end, and are pear-shaped. The wider the stator teeth are, the smaller the stator slot is closed, and the electromagnetic performance is good, but the slot filling rate is often reduced, and the more difficult the stator slot is to be taken off line. The permanent magnet roller stator is limited by the stator slot structure, the permanent magnet roller stator can only adopt the scattered embedded coil, the enameled wire of the scattered embedded coil is easily scratched at a stator slot opening in the process of winding, insulating paint is damaged, and insulating performance is affected, so that the motor is easily broken down.
The formed winding is favorable for improving the slot filling rate of the motor, the improvement of the slot filling rate means that more copper wires can be filled on the premise of unchanged space, stronger magnetic field intensity is generated, and the power density is improved. However, the structure of the inner stator of the permanent magnet roller means that the permanent magnet roller is more difficult to take off the winding by adopting the forming winding than the structure of the outer stator of the permanent magnet motor.
Disclosure of Invention
In order to effectively solve or at least alleviate the problems in the prior art, the present invention provides the following technical solutions.
The invention provides a permanent magnet roller stator core which comprises a plurality of stator punching sheets, stator windings embedded and wound on the stator punching sheets, and a first pressing plate and a second pressing plate which are pressed and installed on the stator punching sheets.
Further, the stator punching sheet comprises a second tooth part with a key groove and a plurality of third tooth parts; the second tooth part and the third tooth part are respectively provided with a yoke part and a plurality of second external teeth uniformly distributed on the yoke part; the yoke is of a fan-shaped annular structure, a plurality of concave parts are uniformly arranged on the outer arc side of the fan-shaped annular structure of the yoke, an outwards protruding tenon part is arranged at one end of the yoke, an inwards concave mortise part is arranged at the other end of the yoke, and a plurality of mounting holes are uniformly formed in the yoke.
Further, the yoke portion of the second tooth portion is of a fan-shaped annular structure, a plurality of concave portions are uniformly formed in the outer arc side of the fan-shaped annular structure of the yoke portion, key grooves are formed in the inner side of the arc, the key grooves are close to the tenon portion end, and the second tooth portion is connected with the third tooth portions in a tail-to-head mode to form a stator punching sheet.
Further, the stator punching sheet further comprises first external teeth arranged between two adjacent second external teeth, wherein the upper part of the first external teeth is in a sector shape and provided with an angle alpha, the lower part of the first external teeth is in a rectangle shape and provided with convex parts, and the convex parts are matched with the concave parts in size.
Further, the second external teeth are arranged on the yoke parts of the second teeth part and the third teeth part, the upper part of the second teeth part is rectangular, and the lower part of the second teeth part is trapezoidal, and the angle beta is formed.
Further, the angle β and the angle α satisfy the relationship α+β=pi.
Further, the stator groove comprises a first stator groove and a second stator groove, wherein the first stator groove is formed by an upper edge of adjacent second external teeth and an upper edge of first external teeth, and the upper edge of the adjacent second external teeth is parallel to the upper edge of the first external teeth; the second stator slot is formed by a lower end edge of the adjacent second external tooth and a lower end edge of the first external tooth, wherein the lower end edge of the adjacent second external tooth is parallel to the lower end edge of the first external tooth.
Further, the first pressing plate is used for fixing the first external teeth, and the second pressing plate is used for fixing the second external teeth.
The invention further provides a permanent magnet roller stator winding offline method, which is used for offline the stator winding of the permanent magnet roller stator core.
Further, the method for winding off-line of the permanent magnet roller stator winding comprises the following steps: step one, a double-head threaded pin penetrates through a mounting hole of a first external tooth, the first external tooth is overlapped to the required iron core length, the 1 st first external tooth is marked as 1, the last first external tooth is marked as n, and the first external tooth is respectively pressed on the outer sides of the 1 st first external tooth and the n th first external tooth by a first pressing plate to form a first tooth block; repeating the steps to form m first tooth blocks;
embedding and winding a first winding on two sides below a first tooth block formed in the first step, namely, arranging the first winding in a second stator slot; repeatedly completing the embedded first tooth blocks of the plurality of first windings;
thirdly, a double-head threaded pin penetrates through mounting holes of the second tooth part and the third tooth part, one second tooth part and the plurality of third tooth part ends are mutually buckled to be spliced into a piece of annular stator punching sheet, n pieces of annular stator punching sheets are spliced, the n pieces of annular stator punching sheets are aligned by key grooves of each piece, the mounting holes on the yoke part are aligned, n pieces of stator punching sheets are assembled in a positive-negative alternating lamination mode, and then a second pressing plate is used for respectively pressing the outer sides of the 1 st piece of stator punching sheet and the n th piece of stator punching sheet to form a second tooth block;
fourthly, the m first tooth blocks with the first windings embedded and wound in the second step are buckled on the concave parts on the second tooth blocks through the convex parts at the lower ends of the first external teeth respectively;
step five, after the step four is completed, embedding and winding the second windings on two sides above the second external teeth, namely, arranging the second windings in the first stator grooves; and the first windings and the second windings are alternately arranged in the two stator slots, the embedding and winding of a plurality of second windings are repeatedly completed, and finally the stator core is assembled.
In the technical scheme, the first external teeth and the second external teeth form two stator slots, the stator winding is arranged in the stator slots, the vertical two sides of the first stator slots are parallel, the vertical two sides of the second stator slots are important technical characteristics, the permanent magnet roller has novelty and creativity in the technical field of permanent magnet rollers, and the terms in the technical scheme can be explained and understood by patent documents in the technical field.
Drawings
The foregoing and other objects and advantages of the invention will become more fully apparent from the following detailed description, taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic diagram of the permanent magnet drum stator core structure of the present invention.
Fig. 2 is a schematic view of the first external tooth structure of the present invention.
FIG. 3 is a schematic view of a first platen structure according to the present invention.
Fig. 4 is a schematic view of a second tooth structure of the present invention.
Fig. 5 is a schematic view of a third tooth structure of the present invention.
Fig. 6 is a schematic view of a second platen structure of the present invention.
Fig. 7 is a schematic view of a first winding embedded around a first tooth block.
Fig. 8 is a schematic perspective view of the first winding embedded around the first tooth block.
Fig. 9 is a schematic diagram of the relative positions of the first stator slot and the second stator slot.
Fig. 10 is a schematic view of a second tooth block structure.
Fig. 11 is a schematic view of a structure formed in step four of the present invention.
Description of the reference numerals: 1-first external teeth, 2-second external teeth, 3-first pressing plate, 4-second pressing plate, 5-first winding, 6-second winding, 7-first stator slot, 8-second stator slot, 9-key slot, 10-second teeth, 11-third teeth, 12-tenons, 13-mortise, 14-concave, 15-convex and 16-yoke.
Detailed Description
The present invention will be described in further detail with reference to examples. The advantages and features of the present invention will become more apparent as the description proceeds. These examples are merely exemplary and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present invention may be made without departing from the spirit and scope of the present invention, but these changes and substitutions fall within the scope of the present invention.
Terms such as "comprising" and "including" mean that, in addition to having elements that are directly and explicitly recited in the description and claims, the inventive solution does not exclude the presence of other elements not directly or explicitly recited. In the description herein, directional terms such as "upper", "lower", "front", "rear", and the like are used, and it should be understood that these directional terms are relative terms, which are used for the description and clarification of relative positions, and their corresponding specific orientations may be changed accordingly in accordance with the changes in the orientation of the present invention.
In order to overcome the technical defects, as shown in fig. 1, the invention provides a permanent magnet roller stator core, which comprises a plurality of stator punching sheets, stator windings embedded and wound on the stator punching sheets, and a first pressing plate and a second pressing plate which are pressed and installed on the stator punching sheets, wherein the stator windings are arranged as a first winding and a second winding, the stator punching sheets are provided with a first external tooth and a second external tooth, the first external tooth and the second external tooth form two stator grooves, and the stator windings are arranged in the stator grooves. According to the technical scheme, the first external teeth and the second external teeth are designed, and the double-stator-tooth split structure is adopted, so that the first external teeth and the second external teeth can be mutually separated and mutually buckled, the utilization rate of stator punching sheets is improved, and the production cost is reduced.
In this embodiment, as shown in fig. 5 and 6, the stator punching sheet includes a second tooth portion having a key groove and a plurality of third tooth portions; the second tooth part and the third tooth part are respectively provided with a yoke part and a plurality of second external teeth uniformly distributed on the yoke part; the yoke is of a fan-shaped annular structure, a plurality of concave parts are uniformly arranged on the outer arc side of the fan-shaped annular structure of the yoke, an outwards protruding tenon part is arranged at one end of the yoke, an inwards concave mortise part is arranged at the other end of the yoke, and a plurality of mounting holes are uniformly formed in the yoke. As shown in fig. 5, the yoke portion of the second tooth portion is of a fan-shaped annular structure, a plurality of concave portions are uniformly arranged on the outer arc side of the fan-shaped annular structure of the yoke portion, key grooves are formed in the inner side of the arc, the key grooves are close to the tenon portion ends, and the second tooth portion is spliced with the third tooth portions in a head-tail mode. The second tooth part and the third tooth parts are buckled end to end, so that the production cost of the stator punching sheet is reduced, and the production efficiency is improved.
In this embodiment, the stator lamination further includes first external teeth disposed between two adjacent second external teeth, as shown in fig. 2, the first external teeth are disposed above in a sector shape, have an angle α, and are disposed below in a rectangular shape, and have a convex portion that matches the size of the concave portion on the yoke portion. As shown in fig. 5, 6 and 9, the second external teeth are provided on the yoke portions of the second teeth and the third teeth, the second teeth are provided with a rectangular shape above and a trapezoidal shape below, and have an angle β. The angle β and the angle α satisfy the relationship α+β=pi. The technical purpose of the stator lamination is to adopt such an angle design, so that the edge of the first external tooth is parallel to the edge of the second external tooth in the vertical direction after the stator lamination is formed, two stator slots are ensured to be formed, and each stator slot is provided with a pair of parallel edges. In this embodiment, each annular stator punching sheet is formed by buckling the head and the tail of one second tooth portion and five second tooth portions, thirty-six second external teeth are shared on the six tooth portions, a first external tooth is arranged between every two second external teeth, and each annular stator punching sheet is provided with seventy-two external teeth. The angle a=5° between the first external teeth and the second external teeth is designed. The first external teeth are designed to have an angle α=95°, and the second external teeth are designed to have an angle β=85°. In an actual design, the design angles α and β may satisfy α+β=pi according to the number of teeth of the first external teeth and the second external teeth.
In this embodiment, the stator slots formed by the first external teeth and the second external teeth include a first stator slot and a second stator slot, the first stator slot being formed by an upper end edge of an adjacent second external tooth and an upper end edge of the first external tooth, wherein the upper end edge of the adjacent second external tooth is parallel to the upper end edge of the first external tooth; the second stator slot is formed by a lower end edge of the adjacent second external tooth and a lower end edge of the first external tooth, wherein the lower end edge of the adjacent second external tooth is parallel to the lower end edge of the first external tooth. The technical aim is that the stator winding assembly has a group of stator slots parallel to the opposite sides, is more convenient in mounting the stator winding, and can not cause wire-striking damage due to the fact that one end of each stator slot is large and the other end is small, so that wire enamel is damaged, and further the insulation performance is affected, so that the motor is easy to break down. And the design of double stator grooves is adopted, which is beneficial to improving the full groove rate.
In this embodiment, the first pressing plate is used to fix the first external teeth, and the second pressing plate is used to fix the second external teeth. The first pressing plate is used for fixing a group of first external teeth to form a first tooth block, and the second pressing plate is used for fixing second external teeth on the second tooth part and the third tooth part to form a second tooth block.
In this embodiment, a method for winding off-line of the permanent magnet roller stator winding is also provided, and winding off-line is a term commonly used in normal work, meaning that the winding is mounted on the external teeth.
A permanent magnet roller stator winding offline method comprises the following steps: step one, a double-head threaded pin penetrates through a mounting hole of a first external tooth, the first external tooth is overlapped to the required iron core length, the 1 st first external tooth is marked as 1, the last first external tooth is marked as n, and the first external tooth is respectively pressed on the outer sides of the 1 st first external tooth and the n th first external tooth by a first pressing plate to form a first tooth block; repeating the steps to form m first tooth blocks. Embedding and winding a first winding on two sides below one tooth block formed in the first step, namely, arranging the first winding in a second stator groove; the embedding of the plurality of first windings is repeatedly completed. Thirdly, a double-head threaded pin penetrates through mounting holes of the second tooth part and the third tooth part, one second tooth part and the plurality of third tooth part ends are mutually buckled to be spliced into a piece of annular stator punching sheet, n pieces of annular stator punching sheets are spliced, the n pieces of annular stator punching sheets are aligned by key grooves of each piece, the mounting holes on the yoke part are aligned, n pieces of stator punching sheets are assembled in a positive-negative alternating lamination mode, and then a second pressing plate is used for respectively pressing the outer sides of the 1 st piece of stator punching sheet and the n th piece of stator punching sheet to form a second tooth block; step four, buckling the first tooth block which is completed in the step one on a concave part on the second tooth block through a first convex part at the lower end of the first external tooth; embedding and winding the second windings on two sides above the second external teeth, namely, arranging the second windings in the first stator grooves; and the first windings and the second windings are alternately arranged in the rectangular stator slots, the embedding and winding of a plurality of second windings are repeatedly completed, and finally the stator core is assembled. In the installation process, the annular stator punching sheet adopts a positive-negative alternating lamination mode, and the joint of the second tooth part and the third tooth part is not in a straight line when seen from the whole stator core, and the dislocation arrangement can lead the magnetic flux to be uniform and the whole stress of the stator core to be uniform. In the technical scheme, by adopting the structure and the method, through the structure that different stator teeth are separated from each other, the stator teeth are parallel, and stator slots are parallel, so that the formed winding can be quickly and conveniently embedded and wound on respective tooth parts, the coil discharging efficiency is improved, and the slot filling rate is improved.
The invention has the following beneficial effects:
1) The invention designs the first external teeth and the second external teeth, adopts a structure of split double stator teeth, can be mutually separated and mutually buckled, improves the utilization rate of stator punching sheets, and reduces the production cost.
2) According to the invention, the first external teeth are assembled into the first tooth block, the second tooth part and the third tooth part are assembled into the second tooth block, and the two tooth blocks are assembled after the winding is singly embedded in the first tooth block, so that the production efficiency of the stator core is improved.
3) The angle of the upper end of the first external tooth and the angle of the lower end of the second external tooth are mutually complementary, and by adopting the angle design, the edge of the first external tooth is parallel to the edge of the second external tooth in the vertical direction after the stator punching sheet is formed, so that two stator grooves are formed.
4) The invention is designed with two groups of stator slots, each stator slot is provided with a group of parallel opposite sides, the stator slots are more convenient to install the stator winding, and the wire-striking damage caused by the fact that one end of each stator slot is large and the other end is small can not occur, the wire enamel is damaged, and the insulation performance is further affected, so that the motor is easy to break down. And the design of double stator grooves is adopted, so that the full groove rate is improved.
The embodiments in the above examples may be further combined or replaced, and the examples are merely illustrative of preferred embodiments of the present invention and not intended to limit the spirit and scope of the present invention, and various changes and modifications made by those skilled in the art to the technical solution of the present invention without departing from the design concept of the present invention are all within the scope of the present invention.
Claims (9)
1. The utility model provides a permanent magnetism cylinder stator core, includes a plurality of stator punching, inlays around the stator winding on the stator punching, the first clamp plate and the second clamp plate on the stator punching of pressure equipment, its characterized in that: the stator winding is arranged into a first winding and a second winding, a first external tooth and a second external tooth are arranged on the stator punching sheet, the first external tooth and the second external tooth can be mutually separated and buckled, the first external tooth and the second external tooth form two stator grooves, the stator grooves comprise a first stator groove and a second stator groove, the first stator groove is formed by one edge of the upper end of the adjacent second external tooth and one edge of the upper end of the first external tooth, and the upper edge of the adjacent second external tooth is parallel to the upper edge of the first external tooth; the second stator groove is formed by the lower end edge of the adjacent second external tooth and the lower end edge of the first external tooth, wherein the lower end edge of the adjacent second external tooth is parallel to the lower end edge of the first external tooth; the first winding is embedded and wound on two sides below the first external teeth, and the second winding is embedded and wound on two sides above the second external teeth.
2. A permanent magnet drum stator core according to claim 1, characterized in that: the stator punching sheet comprises a second tooth part with a key groove and a plurality of third tooth parts; the second tooth part and the third tooth part are respectively provided with a yoke part and a plurality of second external teeth uniformly distributed on the yoke part; the yoke is of a fan-shaped annular structure, a plurality of concave parts are uniformly arranged on the outer arc side of the fan-shaped annular structure of the yoke, an outwards protruding tenon part is arranged at one end of the yoke, an inwards concave mortise part is arranged at the other end of the yoke, and a plurality of mounting holes are uniformly formed in the yoke.
3. A permanent magnet drum stator core according to claim 2, characterized in that: the yoke portion of second tooth portion is fan annular structure, and the outer arc side of fan annular structure of yoke portion evenly is provided with a plurality of concave parts, and the arc inboard is provided with the keyway, and the keyway is close to tenon portion end, second tooth portion and a plurality of third tooth portion end to end connect into a slice stator punching.
4. A permanent magnet drum stator core according to claim 2, characterized in that: the first external teeth are arranged between two adjacent second external teeth, the upper part of the first external teeth is in a fan shape, the angle alpha is formed, the lower part of the first external teeth is in a rectangular shape, and the first external teeth are provided with convex parts, and the convex parts are matched with the concave parts in size.
5. A permanent magnet drum stator core according to claim 4, characterized in that: the second external teeth are arranged on the yoke parts of the second teeth part and the third teeth part, the upper part of the second teeth part is rectangular, and the lower part of the second teeth part is trapezoidal and has an angle beta.
6. A permanent magnet drum stator core according to claim 5, characterized in that: the angle β and the angle α satisfy the relationship α+β=pi.
7. A permanent magnet drum stator core according to claim 1, characterized in that: the first pressing plate is used for fixing the first external teeth, and the second pressing plate is used for fixing the second external teeth.
8. A permanent magnet roller stator winding offline method is characterized by comprising the following steps of: the stator winding of the permanent magnet drum stator core as claimed in any one of claims 1-7 is taken down.
9. The method for winding off-line of the permanent magnet drum stator winding according to claim 8, wherein the method comprises the following steps: the method comprises the following steps: step one, a double-head threaded pin penetrates through a mounting hole of a first external tooth, the first external tooth is overlapped to the required iron core length, the 1 st first external tooth is marked as 1, the last first external tooth is marked as n, and the first external tooth is respectively pressed on the outer sides of the 1 st first external tooth and the n th first external tooth by a first pressing plate to form a first tooth block; repeating the steps to form m first tooth blocks;
embedding and winding a first winding on two sides below a first tooth block formed in the first step, namely, arranging the first winding in a second stator slot; repeatedly completing the embedded first tooth blocks of the plurality of first windings;
thirdly, a double-head threaded pin penetrates through mounting holes of the second tooth part and the third tooth part, one second tooth part and the plurality of third tooth part ends are mutually buckled to be spliced into a piece of annular stator punching sheet, n pieces of annular stator punching sheets are spliced, the n pieces of annular stator punching sheets are aligned by key grooves of each piece, the mounting holes on the yoke part are aligned, n pieces of stator punching sheets are assembled in a positive-negative alternating lamination mode, and then a second pressing plate is used for respectively pressing the outer sides of the 1 st piece of stator punching sheet and the n th piece of stator punching sheet to form a second tooth block;
fourthly, the m first tooth blocks with the first windings embedded and wound in the second step are buckled on the concave parts on the second tooth blocks through the convex parts at the lower ends of the first external teeth respectively;
step five, after the step four is completed, embedding and winding the second windings on two sides above the second external teeth, namely, arranging the second windings in the first stator grooves; and the first windings and the second windings are alternately arranged in the two stator slots, the embedding and winding of a plurality of second windings are repeatedly completed, and finally the stator core is assembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211365988.2A CN115566820B (en) | 2022-11-03 | 2022-11-03 | Permanent magnet roller stator core and winding offline method of stator core |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211365988.2A CN115566820B (en) | 2022-11-03 | 2022-11-03 | Permanent magnet roller stator core and winding offline method of stator core |
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| CN115566820A CN115566820A (en) | 2023-01-03 |
| CN115566820B true CN115566820B (en) | 2023-08-08 |
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| JP2018046617A (en) * | 2016-09-13 | 2018-03-22 | 三菱電機株式会社 | Stator core of rotary electric machine |
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| CN112186915A (en) * | 2020-10-22 | 2021-01-05 | 江苏金丰机电有限公司 | Stator assembly |
| CN113937916A (en) * | 2021-11-16 | 2022-01-14 | 山东欧瑞安电气有限公司 | Stator core for permanent magnet drum |
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2022
- 2022-11-03 CN CN202211365988.2A patent/CN115566820B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009201304A (en) * | 2008-02-25 | 2009-09-03 | Mitsuba Corp | Rotary electric machine |
| JP2016226111A (en) * | 2015-05-28 | 2016-12-28 | 株式会社デンソー | Stator core |
| WO2017092191A1 (en) * | 2015-12-02 | 2017-06-08 | 中山大洋电机股份有限公司 | Stator punching, stator assembly and external rotor motor |
| JP2017225208A (en) * | 2016-06-13 | 2017-12-21 | 三菱電機株式会社 | Armature, rotary electric machine, and manufacturing method of armature |
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| CN112186915A (en) * | 2020-10-22 | 2021-01-05 | 江苏金丰机电有限公司 | Stator assembly |
| CN113937916A (en) * | 2021-11-16 | 2022-01-14 | 山东欧瑞安电气有限公司 | Stator core for permanent magnet drum |
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| Publication number | Publication date |
|---|---|
| CN115566820A (en) | 2023-01-03 |
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