CN117791909A - Stator assembly based on disk motor - Google Patents
Stator assembly based on disk motor Download PDFInfo
- Publication number
- CN117791909A CN117791909A CN202311834831.4A CN202311834831A CN117791909A CN 117791909 A CN117791909 A CN 117791909A CN 202311834831 A CN202311834831 A CN 202311834831A CN 117791909 A CN117791909 A CN 117791909A
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- CN
- China
- Prior art keywords
- radial rib
- yoke plate
- yoke
- stator
- silicon steel
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Links
- 238000004804 winding Methods 0.000 claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 45
- 238000010030 laminating Methods 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 150000003376 silicon Chemical class 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a stator assembly based on a disk motor, which comprises: the radial rib yoke plate consists of a circular yoke part at the inner ring and a plurality of radial rib parts extending outwards from the circular yoke part; a concave table is arranged on the outer ring of the radial rib part; all concave tables form a circular spigot structure; the segmented stator iron cores are clamped in empty slots formed between every two adjacent radial rib parts; a plurality of segmented stator cores are fixed on the radial rib yoke plate to form tooth parts of the stator cores; the winding is wound on the segmented stator core; the stator outer ring is positioned at the rabbet through the concave table and the radial rib yoke plate and is fixedly connected with the radial rib yoke plate through a flat head bolt; wherein, the circular yoke part and the stator outer ring form a limit structure for the segmented stator core; the bottoms of the radial rib yoke plates, the bottoms of the segmented stator cores and the bottoms of the stator outer rings are on the same plane. The segmented stator core has small volume and easy processing, and improves the production efficiency of the disc motor.
Description
Technical Field
The invention relates to the technical field of disc motors, in particular to a stator assembly based on a disc motor.
Background
The axial magnetic field motor is also called a disk motor, has the characteristics of small volume, light weight, short axial dimension, high power density and the like, can be used in most thin installation occasions, and is widely used.
Unlike the common cylindrical motor stator iron core, the disc motor stator iron core is often rolled, and firstly, rolled silicon steel sheet raw materials with certain width are fixed on a rotatable material supporting mechanism, so that smooth feeding is ensured. Secondly, the coiled silicon steel sheet (strip material) has certain bending, needs to be leveled by a leveling mechanism, then is punched by a punching mechanism (punch), and finally realizes an automatic coiling process on the coiling mechanism. In the winding process, the winding tightness is required to be ensured to be consistent, namely the winding degree (corresponding to the lamination coefficient of the cylindrical motor) of the stator core is ensured.
The existing winding and coiling manufacturing method has the advantages of saving materials, being mature in molding process, low in winding speed, low in iron core manufacturing efficiency, and high in cost because only winding equipment can be added if the iron core is produced in batches.
Therefore, how to provide a stator assembly structure of a disc motor to improve the situation that the current winding production efficiency of the stator of the disc motor is difficult to be improved is a problem to be solved.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a stator assembly based on a disc motor, so as to solve the problem of low production efficiency when a stator core of the disc motor is manufactured by adopting a winding process in the prior art.
The embodiment of the invention provides a stator assembly based on a disk motor, which comprises the following components:
the radial rib yoke plate consists of a circular yoke part at the inner ring and a plurality of radial rib parts extending outwards from the circular yoke part; a concave table is arranged on the outer ring of the radial rib part; all concave tables form a circular spigot structure;
the segmented stator iron cores are clamped in empty slots formed between every two adjacent radial rib parts; a plurality of segmented stator cores are fixed on the radial rib yoke plate to form tooth parts of the stator cores;
the winding is wound on the segmented stator core;
the stator outer ring is positioned at the rabbet through the concave table and the radial rib yoke plate and is fixedly connected with the radial rib yoke plate through a flat head bolt;
wherein, the circular yoke part and the stator outer ring form a limit structure for the segmented stator core; the bottoms of the radial rib yoke plates, the bottoms of the segmented stator cores and the bottoms of the stator outer rings are on the same plane.
Optionally, the radial rib yoke plate is manufactured by laminating a plurality of silicon steel sheets; or, the radial rib yoke plate is prepared by laminating a plurality of silicon steel sheets and then riveting and fixing the silicon steel sheets through rivets; or, the radial rib yoke plate is manufactured by laminating a plurality of silicon steel sheets and then fixing the laminated silicon steel sheets by welding.
Optionally, the radial rib yoke plate is manufactured by laminating a plurality of first silicon steel sheets, a plurality of second silicon steel sheets and a plurality of third silicon steel sheets;
the first silicon steel sheet comprises an inner ring, a plurality of radial ribs with a first length and a first width; the second silicon steel sheet comprises an inner ring, a plurality of radial ribs with a second length and a first width; the third silicon steel sheet comprises an inner ring, a plurality of radial ribs with a second length and a second width; after two silicon steel sheets with different lengths are laminated, a concave table is formed on the outer ring; after the two silicon steel sheets with different widths are laminated, forming a convex structure on two sides of the radial rib part; the protruding structure is positioned at the upper position of the bottom of the radial rib yoke plate; the first length is greater than the second length; the second width is greater than the first width.
Optionally, the segmented stator core is in a trapezoid block shape, and the narrower end of the segmented stator core is abutted against the circular yoke part of the radial rib yoke plate; the length of the segmented stator core is less than or equal to the second length.
Optionally, grooves matched with the protruding structures on two sides of the radial rib parts are arranged on the bottoms of two sides of the segmented stator core.
Optionally, a flange is provided on top of the segmented stator core.
Optionally, the portions of the segmented stator core that are higher than the radial rib yoke plates are wider than the portions of the segmented stator core that are sandwiched between the radial rib yoke plates.
Optionally, the winding is a flat copper wire winding or a round enameled wire winding.
Optionally, the method further comprises: the surface of the end cover is provided with an avoidance hole for accommodating a flat head bolt for fixing the radial rib yoke plate; the part of the end cover, which is contacted with the radial rib yoke plate, the segmented stator core and the stator outer ring, is a circular boss; the bottom of the end cover is provided with radiating fins; a plurality of channels are formed on the side surface of the end cover and used for ventilation and heat dissipation; the channel part penetrates into a circular through hole in the middle of the end cover.
Optionally, the method further comprises: the closed circular ring is fixed in a circular through hole in the middle of the end cover.
The invention has the beneficial effects that:
the embodiment of the invention provides a stator assembly based on a disc motor, and provides a segmented stator core and a radial rib yoke plate structure of an inner ring yoke part.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and should not be construed as limiting the invention in any way, in which:
FIG. 1 illustrates a block diagram of a disc motor-based stator assembly in accordance with an embodiment of the present invention;
FIG. 2 illustrates an exploded view of a disc motor-based stator assembly in accordance with an embodiment of the present invention;
FIG. 3 illustrates a side view of a radial rib yoke plate in accordance with an embodiment of the present invention;
FIG. 4 illustrates a radial rib yoke plate in accordance with an embodiment of the present invention;
FIG. 5 is a schematic bottom view of an embodiment of the present invention wherein a radial rib yoke plate is assembled with a segmented stator core;
FIG. 6 is a schematic diagram showing the assembly of a radial rib yoke plate, a segmented stator core and a stator outer ring in an embodiment of the present invention; radial rib yoke plates of a stator assembly based on a disc motor;
fig. 7 shows a block structure of a segmented stator core in an embodiment of the present invention;
FIG. 8 shows a block diagram of a core tooth formed from a plurality of segmented stator cores in an embodiment of the invention;
FIG. 9 shows an assembly of a radial rib yoke plate, segmented stator core and windings in an embodiment of the invention;
FIG. 10 illustrates a front block diagram of an end cap in accordance with an embodiment of the present invention;
FIG. 11 illustrates a side view of an end cap in accordance with an embodiment of the present invention;
fig. 12 shows a rear block diagram of an end cap in an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
As shown in fig. 1 to 12, an embodiment of the present invention provides a stator assembly based on a disc motor, including: the radial rib yoke plate 100, the segmented stator core 200, the winding 300 and the stator outer ring 400, wherein the radial rib yoke plate 100 consists of a circular yoke part 101 at the inner ring and a plurality of radial rib parts 102 extending outwards from the circular yoke part 101; a concave table 103 is arranged on the outer ring of the radial rib part 102; all the concave platforms 103 form an annular spigot structure; the segmented stator cores 200 are clamped in empty slots formed between every two adjacent radial rib parts; a plurality of segmented stator cores 200 are fixed on the radial rib yoke plate 100 to form tooth parts of the stator cores; the winding 300 is wound on the segmented stator core 200; the stator outer ring 400 is positioned with the radial rib yoke plate 100 through the concave table 103, and is fixedly connected with the radial rib yoke plate 100 through the flat head bolt 7. The circular yoke 101 and the stator outer ring 400 form a limit structure for the segmented stator core; the bottoms of the radial rib yoke plates 100, the bottoms of the segmented stator cores 200 and the bottoms of the stator outer rings 400 are on the same plane.
The radial rib yoke plate 100 is made by laminating a plurality of silicon steel sheets.
As shown in fig. 3, after the radial rib yoke plate 100 is laminated by a plurality of silicon steel sheets, screw holes are formed on the circular yoke portion 101 and the radial rib portion 102, and then the radial rib yoke plate is fixed by riveting rivets, so that the integral structure of the radial rib yoke plate is stable. Or, the radial rib yoke plate 100 is manufactured by laminating a plurality of silicon steel sheets and fixing the laminated silicon steel sheets by welding.
As shown in fig. 3 and 4, the radial rib yoke plate 100 is made by laminating a plurality of first silicon steel sheets, a plurality of second silicon steel sheets, and a plurality of third silicon steel sheets.
The first silicon steel sheet comprises an inner ring, a plurality of radial ribs with a first length and a first width; the second silicon steel sheet comprises an inner ring, a plurality of radial ribs with a second length and a first width; the third silicon steel sheet comprises an inner ring, a plurality of radial ribs with a second length and a second width; after two silicon steel sheets with different lengths are laminated, a concave table 103 is formed on the outer ring; after the two silicon steel sheets with different widths are laminated, forming a convex structure on two sides of the radial rib part 102; the protruding structure is located at the upper position of the bottom of the radial rib yoke plate 100; the first length is greater than the second length; the second width is greater than the first width.
As shown in fig. 5 and 6, the length of the silicon steel sheet at the bottom of the radial rib yoke plate 100 is smaller than that of the silicon steel sheet at the top, a concave station 103 is formed, the stator outer ring 400 and the radial rib yoke plate 100 are positioned by rabbets, screw holes are formed in the stator outer ring 400 and the concave station 103, and after the stator outer ring and the concave station are assembled flush, the radial ribs on the yoke plate are fixed by 16 flat head bolts.
As shown in fig. 7, the segmented stator core 200 has a trapezoidal block shape, the narrower end of which abuts against the circular yoke portion 101 of the radial rib yoke plate 100; the length of the segmented stator core 200 is equal to or less than the second length. Grooves 201 which are matched with the protruding structures on the two sides of the radial rib part 102 are arranged on the upper positions of the bottoms on the two sides of the segmented stator core 200. A flange 202 is provided on top of the segmented stator core 200.
The portion of the segmented stator core 200 that is higher than the radial rib yoke plates 100 is wider than the portion of the segmented stator core 200 that is clamped between the radial rib yoke plates 100, so that a spigot structure is also formed between the segmented stator core 200 and the radial rib yoke plates 100.
The segmented stator core 200 slides along the radial direction to enter the radial rib yoke plate 100, and is fixed by matching the grooves and the bosses, so that the axial and radial limiting is realized.
The segmented stator core teeth are used for providing tooth magnetic circuits, and are important components of the magnetic circuits. In a specific embodiment, 24 iron core teeth form a tooth part of a stator iron core, and the tooth part and the radial rib yoke plate are assembled to form a complete stator iron core. The height of 24 tooth surfaces is guaranteed to be consistent during assembly, a tin stamping process can be adopted at the bottoms of the teeth and the yoke plates, tin materials are filled in the splicing positions of the teeth and the yoke plates, and good heat dissipation of the bottoms of the yoke plates, namely the bottoms of the stators is guaranteed.
As an alternative embodiment, the winding is a flat copper wire winding or a round enameled wire winding.
As shown in fig. 10 to 12, the present invention further includes: the end cover 500 is provided with an avoidance hole 501 on the surface, the inner hexagonal flat head bolt can protrude out of the bottom surface of the stator core, and the avoidance hole 501 is used for accommodating the flat head bolt for fixing the radial rib yoke plate 100; the part of the end cover 500, which is in contact with the radial rib yoke plate 100, the segmented stator core 200 and the stator outer ring 400, is a circular boss 502; a heat radiation fin 503 is arranged at the bottom of the end cover 500; a plurality of channels 504 are arranged on the side surface of the end cover 500 for ventilation and heat dissipation; the channel 504 extends partially through a circular through hole in the middle of the end cap 500. The closed circular ring 600 is welded and fixed in a circular through hole in the middle of the end cover 500 by adopting a friction welding mode, and a motor bearing is arranged on the closed circular ring 600 to realize the fixed installation with the stator assembly.
The radial rib yoke plate is formed by laminating silicon steel sheets and is formed by three silicon steel sheets with different specifications and shapes, so that the matching of grooves and bosses of the radial rib yoke plate is realized, and the positioning and the mounting of the segmented stator core teeth are realized.
The tooth material of the segmented stator core can be silicon steel sheet lamination and soft magnetic SMC material.
In the embodiment, the stator assembly is in a 24-slot scheme, 24 round holes are respectively formed in the inner ring and the outer ring fins of the radial rib yoke plate, 8 holes uniformly distributed in the inner ring and the outer ring are used for fixedly connecting the stator assembly with the end cover, the rest 16 holes are used for connecting the radial rib yoke plate with the outer ring of the stator, and after the wound segmented iron core is inserted into the radial rib yoke plate, the radial rib yoke plate is connected with the outer ring of the stator through the 16 holes, so that the strength of the outer ring is ensured, and the whole stator is not deformed.
The end cover and the inner and outer rings of the radial rib yoke plate fin are respectively provided with 8 holes, the holes are connected through bolts, the bottom surface of the iron core and the end surface of the end cover are tightly attached together, a layer of heat conduction silicone grease is uniformly coated on the joint surface of the iron core and the end surface of the end cover, and the heat conduction performance of the joint surface is improved.
The embodiment of the invention well solves the current situation of the winding efficiency of the disc motor stator, and the segmented stator core has small volume and easy processing and can greatly improve the production efficiency of the disc motor. The embodiment of the invention also well solves the trouble of iron core deformation in the process of wire embedding of the integrated iron core.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations are within the scope of the invention as defined by the appended claims.
Claims (10)
1. A disc motor-based stator assembly comprising:
the radial rib yoke plate (100) consists of a circular yoke part (101) at the inner ring and a plurality of radial rib parts (102) which extend outwards from the circular yoke part (101); a concave table (103) is arranged on the outer ring of the radial rib part (102); all the concave platforms (103) form an annular spigot structure;
the segmented stator iron cores (200) are clamped in empty slots formed between every two adjacent radial rib parts; the plurality of segmented stator cores (200) are fixed on the radial rib yoke plate (100) to form tooth parts of the stator cores;
a winding (300) wound around the segmented stator core (200);
the stator outer ring (400) is positioned with the radial rib yoke plate (100) through the concave table (103) and fixedly connected with the radial rib yoke plate (100) through the flat head bolt (7);
wherein the circular yoke (101) and the stator outer ring (400) form a limit structure for the segmented stator core; the bottoms of the radial rib yoke plates (100), the bottoms of the segmented stator cores (200) and the bottoms of the stator outer rings (400) are on the same plane.
2. The disc motor-based stator assembly according to claim 1, wherein the radial rib yoke plate (100) is made of a stack of several silicon steel sheets; or, the radial rib yoke plate (100) is manufactured by laminating a plurality of silicon steel sheets and then riveting and fixing the silicon steel sheets through rivets; or, the radial rib yoke plate (100) is manufactured by laminating a plurality of silicon steel sheets and fixing the laminated silicon steel sheets through welding.
3. The disc motor-based stator assembly according to claim 2, wherein the radial rib yoke plate (100) is laminated from a plurality of first silicon steel sheets, a plurality of second silicon steel sheets and a plurality of third silicon steel sheets;
the first silicon steel sheet comprises an inner ring, a plurality of radial ribs with a first length and a first width; the second silicon steel sheet comprises an inner ring, a plurality of radial ribs with a second length and a first width; the third silicon steel sheet comprises an inner ring, a plurality of radial ribs with a second length and a second width; after two silicon steel sheets with different lengths are laminated, the concave table (103) is formed on the outer ring; after the two silicon steel sheets with different widths are laminated, forming a convex structure on two sides of the radial rib part (102); the protruding structure is arranged at the upper position of the bottom of the radial rib yoke plate (100); the first length is greater than the second length; the second width is greater than the first width.
4. A disc motor-based stator assembly according to claim 3, characterized in that the segmented stator core (200) is trapezoidal block-shaped with a narrower end thereof abutting against a circular yoke (101) of the radial rib yoke plate (100); the length of the segmented stator core (200) is equal to or less than the second length.
5. The disc motor-based stator assembly according to claim 4, wherein grooves (201) are provided on the upper sides of the bottoms of both sides of the segmented stator core (200) to be matched with the protruding structures of both sides of the radial rib portion (102).
6. The disc motor-based stator assembly of claim 4, wherein a flange (202) is provided on top of the segmented stator core (200).
7. The disc motor-based stator assembly according to claim 4, wherein a portion of the segmented stator core (200) that is higher than the radial rib yoke plates (100) is wider than a portion of the segmented stator core (200) that is sandwiched between the radial rib yoke plates (100).
8. The disc motor-based stator assembly of claim 1, wherein the windings are flat copper wire windings or round wire windings.
9. The disc motor-based stator assembly of claim 1, further comprising: the surface of the end cover (500) is provided with an avoidance hole (501) for accommodating a flat head bolt for fixing the radial rib yoke plate (100); the parts of the end cover (500) contacted with the radial rib yoke plate (100), the segmented stator core (200) and the stator outer ring (400) are round bosses (502); a heat radiation fin (503) is arranged at the bottom of the end cover (500); a plurality of channels (504) are formed on the side surface of the end cover (500) and used for ventilation and heat dissipation; the channel (504) extends partially into a circular through hole in the middle of the end cap (500).
10. The disc motor-based stator assembly of claim 9, further comprising: and the closed circular ring (600) is fixed in a circular through hole in the middle of the end cover (500).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311834831.4A CN117791909A (en) | 2023-12-28 | 2023-12-28 | Stator assembly based on disk motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311834831.4A CN117791909A (en) | 2023-12-28 | 2023-12-28 | Stator assembly based on disk motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117791909A true CN117791909A (en) | 2024-03-29 |
Family
ID=90379817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311834831.4A Pending CN117791909A (en) | 2023-12-28 | 2023-12-28 | Stator assembly based on disk motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117791909A (en) |
-
2023
- 2023-12-28 CN CN202311834831.4A patent/CN117791909A/en active Pending
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