CN112448516A - Stator core, stator structure, motor, compressor and air conditioner with stator core and stator structure - Google Patents
Stator core, stator structure, motor, compressor and air conditioner with stator core and stator structure Download PDFInfo
- Publication number
- CN112448516A CN112448516A CN202011203771.2A CN202011203771A CN112448516A CN 112448516 A CN112448516 A CN 112448516A CN 202011203771 A CN202011203771 A CN 202011203771A CN 112448516 A CN112448516 A CN 112448516A
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- stator
- slot wedge
- stator core
- equal
- motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
- H02K3/487—Slot-closing devices
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The application provides a stator core, a stator structure, a motor, a compressor and an air conditioner with the stator core, which comprise a core body and a slot wedge structure, wherein a plurality of stator teeth are arranged on the core body; stator slots are formed between every two adjacent stator teeth; the slot wedge structure comprises a slot wedge body; the slot wedge body is plugged at the slot opening of the stator slot; the slot wedge body is provided with a through hole; in the direction of keeping away from the iron core body central axis, the through-hole runs through the slot wedge body. According to the stator core, the stator structure, the motor, the compressor and the air conditioner with the motor, the efficiency of the motor can be improved, and the power density and the torque density of the motor can be improved.
Description
Technical Field
The application belongs to the technical field of air conditioners, and particularly relates to a stator core, a stator structure, a motor, a compressor and an air conditioner with the same.
Background
At present, the existing air condition compressor motor stator structure usually adopts an open slot structure to facilitate wire embedding, but because of the process limitation, the opening is large, the performance of the motor can be reduced, simultaneously the tooth space torque of the motor can be increased after the opening, the local magnetic density of the motor is improved, the power density and the torque density of the motor are increased, the temperature rise of the motor is improved, and the efficiency of the motor is influenced. The existing solution in the industry is to add an integrated slot wedge, so that the problem of low efficiency of a motor slot can be solved, and the manufacturability of a motor is improved.
However, the increase of the integrated slot wedge also causes great magnetic leakage, which seriously affects the efficiency of the motor, and the torque density is not effectively improved, so that the cogging torque is still large, and great electromagnetic noise is still generated.
Therefore, how to provide a stator core, a stator structure, a motor and a compressor, and an air conditioner having the same, which can not only improve the efficiency of the motor, but also improve the power density and the torque density of the motor, is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
Therefore, an object of the present invention is to provide a stator core, a stator structure, a motor, a compressor, and an air conditioner having the same, which can not only improve the efficiency of the motor, but also improve the power density and the torque density of the motor.
In order to solve the above problems, the present application provides a stator core including:
the stator comprises an iron core body, wherein a plurality of stator teeth are arranged on the iron core body; stator slots are formed between every two adjacent stator teeth;
the slot wedge structure comprises a slot wedge body; the slot wedge body is plugged at the slot opening of the stator slot; the slot wedge body is provided with a through hole; in the direction of keeping away from the iron core body central axis, the through-hole runs through the slot wedge body.
Preferably, the through holes are strip-shaped holes; the iron core body is provided with a first end face and a second end face; the strip-shaped holes extend from the first end surface to the direction close to the second end surface;
and/or the width of the strip-shaped hole is d; wherein d is more than or equal to 0.45 and less than or equal to 0.55;
and/or an included angle a is formed between the extending direction of the strip-shaped hole and the central axis of the iron core body.
Preferably, when an included angle a is formed between the extending direction of the strip-shaped hole and the central axis of the iron core body, a is less than or equal to 10 degrees.
Preferably, the number of the through holes is set to at least one; when the quantity of through-hole sets up to more than two, more than two through-holes set gradually in the central axis direction of iron core body.
Preferably, when the number of the through holes is set to be more than two, a magnetic isolation region is provided between two adjacent through holes.
Preferably, in the central axis direction of the core body, the width of the magnetism isolating region is d 1; wherein d1 is more than or equal to 0.3 and less than or equal to 0.8.
Preferably, the slot wedge body is provided with a magnetism isolating hole; the magnetism isolating holes comprise a first magnetism isolating hole and a second magnetism isolating hole; and a magnetism isolating area is formed between the first magnetism isolating hole and the second magnetism isolating hole.
Preferably, the cross-sectional shape of the magnetism isolating hole is any one of a trapezoid, a rectangle and an ellipse.
Preferably, the slot wedge structure further comprises a connection ring; the slot wedge body is arranged on the connecting ring.
Preferably, in the central axis direction of the iron core body, the height of the connecting ring is L, and the height of the slot wedge structure is L1; on the cross section of the iron core body, the minimum distance between the connecting ring and the central axis of the iron core body is R2; the minimum distance between the slot wedge body and the central axis of the iron core body is R1; the minimum distance between the stator teeth and the central axis of the iron core body is R; wherein L is more than or equal to 0.08L1 and less than or equal to 0.12L 1; and/or, R2-R1 are more than or equal to 0 and less than or equal to 0.15; and/or, R is less than or equal to R2; and/or, R is less than or equal to R1.
Preferably, the side surface of the slot wedge body can be in concave-convex fit with the side surface of the stator tooth;
and/or the stator teeth are provided with mounting surfaces; the mounting surface is used for mounting a slot wedge structure;
and/or at least one arc-shaped surface is arranged at the connecting position of the side surface and the inner surface of the slot wedge body.
Preferably, a protrusion is arranged on the side surface of the slot wedge body; a groove is formed in the side surface of each stator tooth; the groove extends from the first end face to the second end face; and the first end surface is provided with a groove opening which is used for guiding the protrusion to enter and exit the groove.
Preferably, the projection comprises a first portion and a second portion; the first part and the second part are sequentially connected in the circumferential direction of the slot wedge body; the cross-sectional area of the first portion decreases in a direction approaching the second portion; the second portion has a cross-sectional area that decreases in a direction approaching the first portion.
According to still another aspect of the present application, there is provided a stator structure including a stator core, the stator core being the above-mentioned stator core.
According to yet another aspect of the present application, there is provided an electric machine comprising a stator structure as described above.
According to still another aspect of the present application, there is provided a compressor including a motor, the motor being the above-mentioned motor.
According to still another aspect of the present application, there is provided an air conditioner including a compressor, the compressor being the above-mentioned compressor.
The utility model provides a stator core, the stator structure, motor and compressor and have its air conditioner, be provided with the through-hole on the slot wedge body, the through-hole is used for offsetting the tooth harmonic, can improve the efficiency of motor greatly, improve the power density and the torque density of motor, reduce the local magnetic density of motor, reduce the temperature rise of motor, improve current slot wedge structure inefficiency, the serious problem of magnetic leakage, the problem that the tooth's socket torque is high, thereby improve the efficiency of motor, improve the power density and the torque density of motor, reduce the local magnetic density of motor, reduce the temperature rise of motor, can reduce tooth's socket torque simultaneously, effectively improve the noise of motor.
Drawings
Fig. 1 is a schematic structural view of a stator core according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an iron core body according to an embodiment of the present application;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a schematic structural diagram of a slot wedge structure according to an embodiment of the present application;
FIG. 5 is a left side view of a slot wedge structure of an embodiment of the present application;
FIG. 6 is a top view of a slot wedge structure according to an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a slot wedge body according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a core body according to an embodiment of the present application;
FIG. 9 is an enlarged view at B in FIG. 8;
FIG. 10 is a top view of a wedge body according to an embodiment of the present application;
FIG. 11 is a top view of a wedge body according to an embodiment of the present application;
FIG. 12 is a top view of a wedge body according to an embodiment of the present application;
FIG. 13 is a top view of a wedge body according to an embodiment of the present application.
The reference numerals are represented as:
1. an iron core body; 11. stator teeth; 111. a groove; 112. a mounting surface; 12. a stator slot; 2. a slot wedge body; 21. a through hole; 22. a protrusion; 23. an arc-shaped surface; 3. a connecting ring; 4. a magnetism isolating region; 5. and (4) magnetism isolating holes.
Detailed Description
Referring to fig. 1 in combination, according to an embodiment of the present application, a stator core includes a core body 1 and a slot wedge structure, wherein a plurality of stator teeth 11 are disposed on the core body 1; a stator slot 12 is formed between two adjacent stator teeth 11; the slot wedge structure comprises a slot wedge body 2; the slot wedge body 2 is blocked at the notch of the stator slot 12; the slot wedge body 2 is provided with a through hole 21; in the direction of keeping away from 1 the central axis of iron core body, through-hole 21 runs through slot wedge body 2, be provided with through-hole 21 on the slot wedge body 2, through-hole 21 is used for offsetting the tooth harmonic, can improve the efficiency of motor greatly, improve the power density and the torque density of motor, reduce the local magnetic density of motor, reduce the temperature rise of motor, improve current slot wedge structure inefficiency, the serious problem of magnetic leakage, the problem that the tooth's socket torque is high, thereby improve the efficiency of motor, improve the power density and the torque density of motor, reduce the local magnetic density of motor, reduce the temperature rise of motor, can reduce tooth's socket torque simultaneously, effectively improve the noise of motor. Stator core is formed by the high punching of silicon steel material, including iron core body 1 and slot wedge structure. The number of the slot wedge bodies 2 is the same as that of the stator slots 12, the positions of the slot wedge bodies correspond to those of the stator slots 12 one by one, and each slot wedge is provided with a through hole 21.
The application also discloses some embodiments, the through holes 21 are strip-shaped holes; the iron core body 1 is provided with a first end face and a second end face; the strip-shaped holes extend from the first end surface to the direction close to the second end surface;
referring to fig. 7 in combination, the width of the strip-shaped holes is d; wherein d is more than or equal to 0.45 and less than or equal to 0.55, and the width is in the range and the motor efficiency is obviously improved through theoretical calculation and experimental verification.
An included angle a is formed between the extending direction of the strip-shaped hole and the central axis of the iron core body 1, so that the tooth harmonic in the running process of the motor can be effectively weakened.
Referring to fig. 7 in combination, the application also discloses some embodiments, when an included angle a is formed between the extending direction of the strip-shaped hole and the central axis of the iron core body 1, a is less than or equal to 10 °, and the value of a can be adjusted according to the running direction of the motor rotor and the tooth harmonic content. The strip-shaped holes can be inclined at both sides of the central axis of the iron core body 1, namely a is more than or equal to-10 degrees and less than or equal to 10 degrees.
The application also discloses some embodiments, the number of the through holes 21 is set to be at least one; when the number of the through holes 21 is two or more, the two or more through holes 21 are sequentially arranged in the central axis direction of the iron core body 1; in the axial direction of the core body 1, there is a distance between every two adjacent through holes 21, that is, it is equivalent to that the adjacent through holes 21 are connected by a connecting rib. I.e. the through-hole 21 may be designed in a multi-break manner.
The application also discloses some embodiments, when the quantity of through-hole 21 sets up to more than two, be provided with between two adjacent through-holes 21 and separate magnetic domain 4, connect through separating magnetic domain 4 between two adjacent through-holes 21 promptly, reduce the magnetic leakage of motor, improve the magnetic flux utilization ratio of motor, improve motor efficiency.
Referring to fig. 7 in combination, the present application also discloses some embodiments, in the central axis direction of the iron core body 1, the width of the magnetic isolation region 4 is d 1; wherein d1 is more than or equal to 0.3 and less than or equal to 0.8, and the magnetic leakage of the motor can be effectively improved.
The application also discloses some embodiments, the slot wedge body 2 is provided with a magnetism isolating hole 5; the magnetism isolating holes 5 comprise a first magnetism isolating hole and a second magnetism isolating hole; the magnetic isolation area 4 is formed between the first magnetic isolation hole and the second magnetic isolation hole, the magnetic circuit of the motor can be improved, the anti-magnetic leakage effect is improved, and the whole width of the magnetic isolation hole 5 cannot exceed the width of the slot wedge body 2. The first magnetism isolating hole is arranged on one side of the magnetism isolating area 4 close to the first end face; the second magnetism isolating hole is arranged on one side of the magnetism isolating area 4 close to the second end face. The number of the first magnetism isolating holes is set to be at least one, and the number of the second magnetism isolating holes is set to be at least one.
The present application also discloses embodiments in which the cross-sectional shape of the magnetism isolating hole 5 is any one of trapezoidal, rectangular and elliptical.
The application also discloses some embodiments, the slot wedge structure further comprises a connecting ring 3; the slot wedge body 2 is arranged on the connecting ring 3. A plurality of wedge bodies 2 and a connecting ring 3. Namely, the slot wedge structure is formed by connecting a plurality of slot wedge bodies 2 through a connecting ring 3, and the connecting ring 3 and the slot wedge bodies 2 are laminated through high punching.
4-6, the present application also discloses embodiments, in the central axis direction of the iron core body 1, the height of the connecting ring 3 is L, and the height of the slot wedge structure is L1; on the cross section of the iron core body 1, the minimum distance between the connecting ring 3 and the central axis of the iron core body 1 is R2; the minimum distance between the wedge body 2 and the central axis of the iron core body 1 is R1; the minimum distance between the stator teeth 11 and the central axis of the iron core body 1 is R; wherein L is more than or equal to 0.08L1 and less than or equal to 0.12L 1; and/or, R2-R1 are more than or equal to 0 and less than or equal to 0.15; and/or, R is less than or equal to R2; and/or R is less than or equal to R1, so that the iron core can be better matched with the iron core body 1 while ensuring that the efficiency is not influenced,
the application also discloses some embodiments, the side surface of the slot wedge body 2 can be matched with the side surface of the stator tooth 11 in a concave-convex mode;
referring to fig. 2-3 in combination, the stator teeth 11 are provided with mounting surfaces 112; the mounting face 112 is used for mounting a slot wedge structure;
with combined reference to fig. 8-13, at least one arcuate surface 23 is provided at the junction of the side and inner surfaces of the wedge body 2; a sharpening structure on the slot wedge body 2 is formed; a plurality of sections of arc-shaped surfaces 23 which are connected in sequence can be arranged at the connecting position of the side surface and the inner surface of the slot wedge body 2; the structure can effectively reduce the cogging torque and improve the noise of the motor.
The application also discloses embodiments, wherein a protrusion 22 is arranged on the side surface of the slot wedge body 2; the side surface of the stator tooth 11 is provided with a groove 111; the grooves 111 extend from the first end face to the second end face; and the first end surface is provided with a notch which is used for guiding the bulge 22 to enter and exit the groove 111; so that the slot wedge structure is connected with the iron core body 1 through insertion type matching.
The present application also discloses embodiments in which the projection 22 includes a first portion and a second portion; the first part and the second part are sequentially connected in the circumferential direction of the slot wedge body 2; the cross-sectional area of the first portion decreases in a direction approaching the second portion; the second portion has a cross-sectional area that decreases in a direction approaching the first portion. The groove 111 is matched with the structure of the protrusion 22, and the two structures are tightly matched with each other due to the structure of the protrusion 22, so that the two structures are prevented from falling off in the rotating process of the motor. Adopt bayonet inseparable cooperation between iron core body 1 and the slot wedge result, fix through unsmooth cooperation structure, guarantee that motor operation in-process slot wedge structure does not drop.
According to the embodiment of the application, a stator structure is provided, which comprises a stator core, wherein the stator core is the stator core.
According to an embodiment of the present application, there is provided a motor including a stator structure, where the stator structure is the above-mentioned stator structure.
According to an embodiment of the application, a compressor is provided, which comprises a motor, wherein the motor is the motor. The motor is a permanent magnet synchronous motor.
According to an embodiment of the application, an air conditioner is provided, which comprises a compressor, wherein the compressor is the compressor.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (17)
1. A stator core, comprising:
the stator comprises an iron core body (1), wherein a plurality of stator teeth (11) are arranged on the iron core body (1); a stator slot (12) is formed between two adjacent stator teeth (11);
a slot wedge structure comprising a slot wedge body (2); the slot wedge body (2) is blocked at the notch of the stator slot (12); the slot wedge body (2) is provided with a through hole (21); in the direction far away from the central axis of the iron core body (1), the through hole (21) penetrates through the slot wedge body (2).
2. Stator core according to claim 1, characterized in that the through-holes (21) are strip-shaped holes; the iron core body (1) is provided with a first end face and a second end face; the strip-shaped holes extend from the first end surface to a direction close to the second end surface;
and/or the width of the strip-shaped hole is d; wherein d is more than or equal to 0.45 and less than or equal to 0.55;
and/or an included angle a is formed between the extending direction of the strip-shaped hole and the central axis of the iron core body (1).
3. The stator core according to claim 2, characterized in that a is 10 ° or less when an angle a is formed between the extending direction of the strip-shaped hole and the central axis of the core body (1).
4. The stator core according to claim 1, wherein the number of the through holes (21) is set to at least one; when the number of the through holes (21) is more than two, the through holes (21) are sequentially arranged in the direction of the central axis of the iron core body (1).
5. The stator core according to claim 4, wherein when the number of the through holes (21) is set to two or more, a magnetic isolation region (4) is provided between adjacent two of the through holes (21).
6. The stator core according to claim 5, characterized in that the width of the flux-separating region (4) in the direction of the central axis of the core body (1) is d 1; wherein d1 is more than or equal to 0.3 and less than or equal to 0.8.
7. The stator core according to claim 5, characterized in that the slot wedge body (2) is provided with a flux-isolating hole (5); the magnetism isolating holes (5) comprise a first magnetism isolating hole and a second magnetism isolating hole; the magnetism isolating area (4) is formed between the first magnetism isolating hole and the second magnetism isolating hole.
8. The stator core according to claim 7, wherein the cross-sectional shape of the magnetism isolating hole (5) is any one of a trapezoid, a rectangle, and an ellipse.
9. The stator core according to claim 1, characterized in that the slot wedge structure further comprises a connection ring (3); the slot wedge body (2) is arranged on the connecting ring (3).
10. The stator core according to claim 9, characterized in that the coupling ring (3) has a height L and the slot wedge structure has a height L1 in the direction of the central axis of the core body (1); on the cross section of the iron core body (1), the minimum distance between the connecting ring (3) and the central axis of the iron core body (1) is R2; the minimum distance between the slot wedge body (2) and the central axis of the iron core body (1) is R1; the minimum distance between the stator teeth (11) and the central axis of the iron core body (1) is R; wherein L is more than or equal to 0.08L1 and less than or equal to 0.12L 1; and/or, R2-R1 are more than or equal to 0 and less than or equal to 0.15; and/or, R is less than or equal to R2; and/or, R is less than or equal to R1.
11. Stator core according to claim 1, characterized in that the sides of the wedge body (2) are relief-fittable with the sides of the stator teeth (11);
and/or a mounting surface (112) is arranged on the stator teeth (11); the mounting surface (112) is used for mounting the slot wedge structure;
and/or at least one arc-shaped surface (23) is arranged at the connecting position of the side surface and the inner surface of the slot wedge body (2).
12. Stator core according to claim 2, characterized in that the slot wedge body (2) is provided with protrusions (22) on its sides; a groove (111) matched with the bulge (22) is formed in the side face of the stator tooth (11); the grooves (111) extending from the first end face to the second end face; and the first end surface is provided with a notch which is used for guiding the protrusion (22) to enter and exit the groove (111).
13. The stator core according to claim 12, wherein the projection (22) comprises a first portion and a second portion; the first part and the second part are sequentially connected in the circumferential direction of the wedge body (2); the cross-sectional area of the first portion decreases in a direction approaching the second portion; the cross-sectional area of the second portion decreases in a direction approaching the first portion.
14. A stator structure comprising a stator core, characterized in that the stator core is a stator core according to any one of claims 1-13.
15. An electrical machine comprising a stator structure, wherein the stator structure is as claimed in claim 14.
16. A compressor comprising an electric motor, wherein the electric motor is the electric motor of claim 15.
17. An air conditioner comprising a compressor, wherein said compressor is the compressor of claim 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011203771.2A CN112448516A (en) | 2020-11-02 | 2020-11-02 | Stator core, stator structure, motor, compressor and air conditioner with stator core and stator structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011203771.2A CN112448516A (en) | 2020-11-02 | 2020-11-02 | Stator core, stator structure, motor, compressor and air conditioner with stator core and stator structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112448516A true CN112448516A (en) | 2021-03-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011203771.2A Pending CN112448516A (en) | 2020-11-02 | 2020-11-02 | Stator core, stator structure, motor, compressor and air conditioner with stator core and stator structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112448516A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04368443A (en) * | 1991-06-13 | 1992-12-21 | Hitachi Ltd | Integral-injection electric rotating machine and manufacture thereof |
| CN104821677A (en) * | 2015-05-14 | 2015-08-05 | 北京交通大学 | Stator main and auxiliary slot wedge for large-scale turbonator |
| CN105406620A (en) * | 2014-09-12 | 2016-03-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor iron core and permanent magnet rotor structure having same |
| CN107681796A (en) * | 2017-10-31 | 2018-02-09 | 哈尔滨电机厂有限责任公司 | Combining structure stator inner surface structure |
| CN209389795U (en) * | 2019-02-26 | 2019-09-13 | 上海磁雷革传动系统有限公司 | A kind of stator core assemblies and motor, vehicle with it |
| CN110365135A (en) * | 2019-08-07 | 2019-10-22 | 安徽德科电气科技有限公司 | A kind of permanent magnetic motor stator magnetic circuit |
| CN110571964A (en) * | 2019-09-25 | 2019-12-13 | 中车株洲电机有限公司 | Motor, stator and fold and rivet formula magnetism slot wedge |
-
2020
- 2020-11-02 CN CN202011203771.2A patent/CN112448516A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04368443A (en) * | 1991-06-13 | 1992-12-21 | Hitachi Ltd | Integral-injection electric rotating machine and manufacture thereof |
| CN105406620A (en) * | 2014-09-12 | 2016-03-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor iron core and permanent magnet rotor structure having same |
| CN104821677A (en) * | 2015-05-14 | 2015-08-05 | 北京交通大学 | Stator main and auxiliary slot wedge for large-scale turbonator |
| CN107681796A (en) * | 2017-10-31 | 2018-02-09 | 哈尔滨电机厂有限责任公司 | Combining structure stator inner surface structure |
| CN209389795U (en) * | 2019-02-26 | 2019-09-13 | 上海磁雷革传动系统有限公司 | A kind of stator core assemblies and motor, vehicle with it |
| CN110365135A (en) * | 2019-08-07 | 2019-10-22 | 安徽德科电气科技有限公司 | A kind of permanent magnetic motor stator magnetic circuit |
| CN110571964A (en) * | 2019-09-25 | 2019-12-13 | 中车株洲电机有限公司 | Motor, stator and fold and rivet formula magnetism slot wedge |
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Application publication date: 20210305 |