CN112087086A - Short-pitch motor stator - Google Patents
Short-pitch motor stator Download PDFInfo
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- CN112087086A CN112087086A CN202010974170.5A CN202010974170A CN112087086A CN 112087086 A CN112087086 A CN 112087086A CN 202010974170 A CN202010974170 A CN 202010974170A CN 112087086 A CN112087086 A CN 112087086A
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- 238000004804 winding Methods 0.000 claims abstract description 342
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000007935 neutral effect Effects 0.000 claims description 19
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- 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
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
-
- 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
-
- 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
- H02K3/28—Layout of windings or of connections between windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The invention provides a short-pitch motor stator which comprises an iron core and a stator winding, wherein 48 stator slots are formed in the iron core, insulating paper is arranged in the stator slots, the insulating paper divides the stator slots into a first layer, a second layer, a third layer and a fourth layer from outside to inside in sequence in the radial direction of the iron core, the stator winding is provided with eight magnetic poles and is a six-phase winding, and each phase of the stator winding comprises a first winding coil, a second winding coil, a third winding coil and a fourth winding coil which are respectively wound on the iron core in a circle. The stator winding is compact in structure, and is beneficial to reducing the height of the end part of the winding, so that the size of the motor is reduced under the condition of not changing power, in addition, the six-phase winding is adopted, the selection range of voltage and current can be enlarged, various controllers are adapted, the system performance and the cost of the motor are optimized, the efficiency and the torque density of the motor can be improved, and meanwhile, the stator winding has the characteristics of strong fault-tolerant capability and high reliability.
Description
Technical Field
The invention relates to an internal part of a motor, in particular to a stator of a short-pitch motor.
Background
With the rapid development of automobile technology, particularly electric automobile technology, the power requirement on the automobile motor is also improved, and the increase of the power inevitably leads to the increase of the volume of the motor; however, various devices on the current automobile are increasing, the installation position provided for the motor is also becoming narrower and crowded, and the power of the existing motor cannot meet the requirement in the limited space, so the contradiction between the volume and the power of the motor becomes a technical problem for high-power research and development of the motor.
The chinese utility model patent that publication number is CN205453323U discloses an adopt flat copper wire's motor stator, and it replaces traditional round copper wire through adopting flat copper wire, has greatly improved motor stator's full rate of groove, and compact structure and output are higher around establishing the back, can solve the contradiction between motor volume and the power to a certain extent, but still need further promote can satisfy more vehicle erection requirements. Meanwhile, the motor stator adopts a three-phase winding, so that the selection range of voltage and current is relatively narrow, and the fault tolerance rate and the reliability are relatively low.
In view of the above, the present inventors have conducted extensive studies to solve the above problems.
Disclosure of Invention
The invention aims to provide a full-pitch motor stator which has large power, relatively small volume, relatively wide voltage and current selection range and relatively high fault-tolerant rate and reliability.
In order to achieve the purpose, the motor stator adopts the following technical scheme:
a short-pitch motor stator comprises an iron core and a stator winding wound on the iron core, wherein 48 stator slots are formed in the iron core at equal intervals, and the short-pitch motor stator is characterized in that insulating paper is arranged in the stator slots and divides the stator slots into a first layer, a second layer, a third layer and a fourth layer from outside to inside in sequence in the radial direction of the iron core, the stator winding is provided with eight magnetic poles and is a six-phase winding, and each phase of the stator winding comprises a first winding coil, a second winding coil, a third winding coil and a fourth winding coil which are respectively wound on the iron core;
in the same phase, leading-out wires are formed at the head ends of the first winding coil and the third winding coil, neutral point connecting wires are formed at the tail ends of the second winding coil and the fourth winding coil, and the two neutral point connecting wires are connected in parallel; the tail end of the first winding coil is connected with the head end of the second winding coil, the winding directions of the first winding coil and the second winding coil are the same, the tail end of the third winding coil is connected with the head end of the fourth winding coil, and the winding directions of the third winding coil and the fourth winding coil are opposite to those of the first winding coil; the winding end of the first winding coil is located in the fourth layer of the corresponding stator slot, the winding end of the second winding coil is located in the second layer of the corresponding stator slot, the winding end of the third winding coil is located in the first layer of the corresponding stator slot, and the winding end of the fourth winding coil is located in the third layer of the corresponding stator slot.
As an improvement of the present invention, the stator slots in which the winding ends of the first winding coil and the second winding coil are located are adjacent to each other, the stator slots in which the winding ends of the third winding coil and the second winding coil are located are the same, the stator slots in which the winding ends of the fourth winding coil and the first winding coil are located are the same, and five stator slots are spaced between two stator slots wound by the same coil.
As an improvement of the present invention, the first winding coil and the fourth winding coil are alternately wound around the fourth layer and the third layer of each corresponding stator slot, respectively, and the second winding coil and the third winding coil are alternately wound around the second layer and the first layer of each corresponding stator slot, respectively.
As an improvement of the present invention, the winding end of the first winding coil in each phase is the winding end of the corresponding phase, and the six-phase winding of the stator winding is respectively a U-phase winding, an a-phase winding, a V-phase winding, a B-phase winding, a W-phase winding and a C-phase winding whose winding ends are sequentially arranged clockwise or counterclockwise, wherein the stator slot in which the winding end of the U-phase winding is located is adjacent to the stator slot in which the winding end of the a-phase winding is located, the stator slot in which the winding end of the V-phase winding is located is adjacent to the stator slot in which the winding end of the B-phase winding is located, the stator slot in which the winding end of the W-phase winding is located is adjacent to the stator slot in which the winding end of the C-phase winding is located, the stator slot in which the winding end of the U-phase winding is located is adjacent to the stator slot in which the winding end of the V-phase winding is located, and the winding end of the V-phase winding are located between the stator slot in which the winding end of the V-phase winding and the winding end The stator slots are all spaced three by three.
As a modification of the present invention, the neutral point connection lines of the U-phase winding, the V-phase winding, and the W-phase winding are connected to each other, and the neutral point connection lines of the a-phase winding, the B-phase winding, and the C-phase winding are connected to each other.
As an improvement of the invention, the first winding coil, the second winding coil, the third winding coil and/or the fourth winding coil comprise more than one conducting wire with an oval or square cross section.
As a modification of the present invention, each of the outgoing lines and each of the neutral point connecting lines are located on the same side of the core.
By adopting the technical scheme, the invention has the following beneficial effects:
1. the stator winding is compact in structure, and is beneficial to reducing the height of the end part of the winding, so that the size of the motor is reduced under the condition of not changing the power, the larger power and the smaller size are realized, in addition, the six-phase winding can be adopted to enlarge the selection range of voltage and current, and is adaptive to various controllers, so that the system performance and the cost of the motor are optimized, the efficiency and the torque density of the motor can be improved, and the stator winding has the characteristics of strong fault-tolerant capability and high reliability.
2. By adopting the conducting wire with the oval or square cross section, the filling rate of the stator slot of the motor is effectively improved, the material utilization rate of the stator is improved, the efficiency of the motor is improved by reducing the copper consumption of the motor, the height of the end part of a winding coil of the motor can be effectively reduced, and the size of the motor is saved.
3. The connection structure of the neutral point connecting line adopted by the invention is beneficial to further improving the efficiency and the torque density of the motor.
4. According to the stator winding provided by the invention, through the staggered arrangement of the first winding coil and the second winding coil as well as the third winding coil and the fourth winding coil, the magnetic field harmonic wave of the motor is favorably improved, the torque fluctuation is reduced, and the efficiency of the motor is improved.
Drawings
FIG. 1 is a schematic view of a partial structure of an iron core in an embodiment;
FIG. 2 is a schematic diagram showing the development structure of a U-phase winding and an A-phase winding in the embodiment;
FIG. 3 is a schematic diagram showing the development structure of the V-phase winding and the B-phase winding in the embodiment;
FIG. 4 is a schematic diagram showing the development structure of the W-phase winding and the C-phase winding in the embodiment;
FIG. 5 is a schematic diagram showing a connection structure of neutral point connection lines of a U-phase winding, a V-phase winding and a W-phase winding in the embodiment;
fig. 6 is a schematic connection structure diagram of neutral point connection lines of the phase a winding, the phase B winding and the phase C winding in the embodiment.
The corresponding designations in the figures are as follows:
100-iron core; 110-stator slots;
210-a first winding coil; 220-a second winding coil;
230-third winding coil; 240-fourth winding coil.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As shown in fig. 1 to 6, the present embodiment provides a short-pitch motor stator, in which the short pitch means that the pitch of the stator winding of the motor stator is smaller than the pole pitch, and the motor stator has less material consumption and higher power factor due to the small pitch. The short-pitch motor stator provided by this embodiment includes an iron core 100 and a stator winding wound on the iron core, wherein 48 stator slots 110 are equidistantly formed in the iron core 100, the shape of the stator slots 110 may be a conventional shape, such as rectangular slots, each stator slot 110 is provided with an insulating paper, the insulating paper is also an insulating paper used by a conventional motor stator, the insulating paper separates the corresponding stator slot into a first layer, a second layer, a third layer and a fourth layer in the radial direction of the iron core 100 from outside to inside in sequence, and each layer is used for winding a stator coil, i.e., a slot-four wire. In order to distinguish the stator slots 110 at different positions, in the present embodiment, the stator slots 110 are numbered from the 1 st slot to the 72 th slot in the counterclockwise direction with any one of the stator slots 110 as a starting point, and in order to distinguish the number of the stator slot 110 from the number of the component of the motor stator, in the present embodiment and fig. 1 to 6, the three-digit number represents the component number of the motor stator, and the one-digit number and the two-digit number represent the number of the stator slot 110.
The stator winding is provided with eight magnetic poles and is a six-phase winding, and the six-phase winding of the stator winding is a U-phase winding, an A-phase winding, a V-phase winding, a B-phase winding, a W-phase winding and a C-phase winding which are sequentially arranged at the winding-up end clockwise or anticlockwise.
Each phase of the stator winding comprises a first winding coil 210, a second winding coil 220, a third winding coil 230 and a fourth winding coil 240 which are respectively wound on the iron core 100 by one circle, in the same phase, the head ends of the first winding coil 210 and the third winding coil 230 form outgoing lines, the tail ends of the second winding coil 220 and the fourth winding coil 240 form neutral point connecting lines, the tail end of the first winding coil 210 is connected with the head end of the second winding coil 220, the winding directions of the first winding coil 210 and the second winding coil 220 are the same (in the embodiment, both are in a counterclockwise mode), the tail end of the third winding coil 230 is connected with the head end of the fourth winding coil 240, and the winding directions of the third winding coil 230 and the fourth winding coil are opposite to that of the first winding coil 210 (namely, the clockwise direction); for convenience of description, the first winding coil 210 and the second winding coil 220 connected in series with each other in the U-phase winding, the a-phase winding, the V-phase winding, the B-phase winding, the W-phase winding, and the C-phase winding are sequentially U1, a1, V1, B1, W1, and C1, and the third winding coil 230 and the fourth winding coil 240 connected in series with each other in the U-phase winding, the a-phase winding, the V-phase winding, the B-phase winding, the W-phase winding, and the C-phase winding are sequentially U2, a2, V2, B2, W2, and C2. The winding coils are welded together through the hairpin type plug-in, the winding coils connected in series are connected through the overline, and the coil formed by welding together through the hairpin type plug-in is widely applied to various motor stators for vehicles, which is not the focus of the embodiment and is not described in detail herein.
Preferably, the first winding coil 210, the second winding coil 220, the third winding coil 230 and/or the fourth winding coil 240 include one or more conductive wires with an oval or square cross section, and in this embodiment, a flat copper wire, that is, a copper conductive wire with an oval or square cross section is used, and the flat copper wire is easy to mount, has good stability, and is beneficial to improving the slot filling factor of the stator winding. In addition, the outgoing lines and the neutral connection lines are located on the same side of the core 100, which facilitates connection.
The winding end (i.e., the position wound in the stator slot 110 and directly connected to the outgoing line) of the first winding coil 210 is located in the fourth layer of the corresponding stator slot 110, the winding end (i.e., the head end) of the second winding coil is located in the second layer of the corresponding stator slot 110, the winding end (i.e., the position wound in the stator slot 110 and directly connected to the outgoing line) of the third winding coil is located in the first layer of the corresponding stator slot 100, and the winding end (i.e., the head end) of the fourth winding coil is located in the third layer of the corresponding stator slot 110. Preferably, in the same phase, the stator slots 110 in which the winding ends of the first winding coil 210 and the second winding coil 220 are located are adjacent (i.e., there is no other stator slot 110 between the two stator slots 110), the stator slots 110 in which the winding ends of the third winding coil 230 and the second winding coil 220 are located are the same, the stator slots 110 in which the winding ends of the fourth winding coil 240 and the first winding coil 210 are located are the same, and five stator slots 110 are spaced between two stator slots 110 wound by the same coil. Further, the first winding coil 210 and the fourth winding coil 240 are alternately wound on the fourth layer and the third layer of each corresponding stator slot 110, and the second winding coil 220 and the third winding coil 230 are alternately wound on the second layer and the first layer of each corresponding stator slot 110. In addition, the winding end of the first winding coil 210 in each phase is taken as the winding end of the corresponding phase, the stator slot 110 in which the winding end of the U-phase winding is located is adjacent to the stator slot 110 in which the winding end of the a-phase winding is located, the stator slot 110 in which the winding end of the V-phase winding is located is adjacent to the stator slot 110 in which the winding end of the B-phase winding is located, the stator slot 110 in which the winding end of the W-phase winding is located is adjacent to the stator slot 110 in which the winding end of the C-phase winding is located, and three stator slots 110 are arranged between the stator slot 110 in which the winding end of the U-phase winding is located and the stator slot 110 in which the winding end of the V-phase winding is located, and between the stator slot 110 in which the winding end of the V-phase winding is located and the stator slot 110 in which the winding end of the W.
Specifically, in this embodiment, U1 is wound counterclockwise, its winding end (i.e. the winding end of the corresponding first winding coil 210) is located in the fourth layer of the 9 th slot, its winding stop end (i.e. the position where it is wound in the stator slot 110 and directly connected to the neutral connection line) is located in the first layer of the 2 nd slot, U2 is wound clockwise, its winding start end is located in the first layer of the 8 th slot, its winding stop end is located in the fourth layer of the 15 th slot, a1 is wound counterclockwise, its winding start end is located in the fourth layer of the 8 th slot, its winding stop end is located in the first layer of the 1 st slot, a2 is wound clockwise, its winding start end is located in the first layer of the 7 th slot, its winding stop end is located in the fourth layer of the 14 th slot, V1 is wound counterclockwise, its winding start end is located in the fourth layer of the 13 th slot, its winding stop end is located in the first layer of the 6 th slot, V2 is wound clockwise, its winding start end is located in the first layer of the 12 th slot, and its winding stop end is located in the fourth layer 19, b1 is wound anticlockwise, its winding end is in the fourth layer of 12 th slot, its winding stop end is in the first layer of 5 th slot, B2 is wound clockwise, its winding start end is in the first layer of 11 th slot, its winding stop end is in the fourth layer of 18 th slot, W1 is wound anticlockwise, its winding start end is in the fourth layer of 17 th slot, its winding stop end is in the first layer of 10 th slot, W2 is wound clockwise, its winding start end is in the first layer of 16 th slot, its winding stop end is in the fourth layer of 23 rd slot, C1 is wound anticlockwise, its winding start end is in the fourth layer of 16 th slot, its winding stop end is in the first layer of 9 th slot, C2 is wound clockwise, its winding start end is in the first layer of 15 th slot, and its winding stop end is in the fourth layer of 22 th slot.
As shown in fig. 5 and 6, two neutral point connection lines in the same phase are connected in parallel, and the respective neutral point connection lines of the U-phase winding, the V-phase winding, and the W-phase winding are connected to each other, and the respective neutral point connection lines of the a-phase winding, the B-phase winding, and the C-phase winding are connected to each other.
The present invention is described in detail with reference to the attached drawings, but the embodiments of the present invention are not limited to the above embodiments, and those skilled in the art can make various modifications to the present invention based on the prior art, which fall within the scope of the present invention.
Claims (7)
1. A short-pitch motor stator comprises an iron core and a stator winding wound on the iron core, wherein 48 stator slots are formed in the iron core at equal intervals, and the short-pitch motor stator is characterized in that insulating paper is arranged in the stator slots and divides the stator slots into a first layer, a second layer, a third layer and a fourth layer from outside to inside in sequence in the radial direction of the iron core, the stator winding is provided with eight magnetic poles and is a six-phase winding, and each phase of the stator winding comprises a first winding coil, a second winding coil, a third winding coil and a fourth winding coil which are respectively wound on the iron core;
in the same phase, leading-out wires are formed at the head ends of the first winding coil and the third winding coil, neutral point connecting wires are formed at the tail ends of the second winding coil and the fourth winding coil, and the two neutral point connecting wires are connected in parallel; the tail end of the first winding coil is connected with the head end of the second winding coil, the winding directions of the first winding coil and the second winding coil are the same, the tail end of the third winding coil is connected with the head end of the fourth winding coil, and the winding directions of the third winding coil and the fourth winding coil are opposite to those of the first winding coil; the winding end of the first winding coil is located in the fourth layer of the corresponding stator slot, the winding end of the second winding coil is located in the second layer of the corresponding stator slot, the winding end of the third winding coil is located in the first layer of the corresponding stator slot, and the winding end of the fourth winding coil is located in the third layer of the corresponding stator slot.
2. The short-pitch motor stator according to claim 1, wherein the stator slots in which the winding ends of the first winding coil and the second winding coil are located are adjacent to each other, the stator slots in which the winding ends of the third winding coil and the second winding coil are located are the same, the stator slots in which the winding ends of the fourth winding coil and the first winding coil are located are the same, and five stator slots are provided between two stator slots wound by the same coil.
3. The short-pitch motor stator as claimed in claim 1 or 2, wherein said first winding coil and said fourth winding coil are alternately wound on said fourth layer and said third layer of each of said stator slots, respectively, and said second winding coil and said third winding coil are alternately wound on said second layer and said first layer of said stator slot, respectively.
4. The short-pitch motor stator according to claim 3, wherein the winding end of the first winding coil in each phase is the winding end of the corresponding phase, and the six-phase windings of the stator winding are respectively a U-phase winding, an A-phase winding, a V-phase winding, a B-phase winding, a W-phase winding and a C-phase winding, wherein the winding end of the U-phase winding is located in the stator slot adjacent to the winding end of the A-phase winding, the winding end of the V-phase winding is located in the stator slot adjacent to the winding end of the B-phase winding, the winding end of the W-phase winding is located in the stator slot adjacent to the winding end of the C-phase winding, the winding end of the U-phase winding is located between the stator slot and the winding end of the V-phase winding, and the winding end of the V-phase winding is located in the stator slot Three stator slots are arranged between the slot and the stator slot where the winding end of the W-phase winding is located at intervals.
5. The short-pitch motor stator according to claim 4, wherein the neutral point connection lines of the U-phase winding, the V-phase winding, and the W-phase winding are connected to each other, and the neutral point connection lines of the A-phase winding, the B-phase winding, and the C-phase winding are connected to each other.
6. A short pitch motor stator according to claim 3, wherein the first winding coil, the second winding coil, the third winding coil and/or the fourth winding coil comprises one or more conductive wires having an elliptical or square cross section.
7. A short-pitch motor stator according to claim 3, wherein each of said outgoing lines and each of said neutral point connecting lines are located on the same side of said core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974170.5A CN112087086A (en) | 2020-09-16 | 2020-09-16 | Short-pitch motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974170.5A CN112087086A (en) | 2020-09-16 | 2020-09-16 | Short-pitch motor stator |
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| Publication Number | Publication Date |
|---|---|
| CN112087086A true CN112087086A (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010974170.5A Pending CN112087086A (en) | 2020-09-16 | 2020-09-16 | Short-pitch motor stator |
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| CN (1) | CN112087086A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011450A (en) * | 2019-03-27 | 2019-07-12 | 苏州汇川技术有限公司 | Stator module and driving motor |
| CN110086279A (en) * | 2019-05-24 | 2019-08-02 | 浩夫尔动力总成（上海）有限公司 | A kind of flat type copper wire driving motor armature winding structure that multilayer is equidistant |
| CN111371223A (en) * | 2020-04-20 | 2020-07-03 | 株洲中车时代电气股份有限公司 | Stator winding, stator with same, motor and vehicle |
| CN212435461U (en) * | 2020-09-16 | 2021-01-29 | 福建艺达电驱动股份有限公司 | Short-pitch motor stator |
-
2020
- 2020-09-16 CN CN202010974170.5A patent/CN112087086A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011450A (en) * | 2019-03-27 | 2019-07-12 | 苏州汇川技术有限公司 | Stator module and driving motor |
| CN110086279A (en) * | 2019-05-24 | 2019-08-02 | 浩夫尔动力总成（上海）有限公司 | A kind of flat type copper wire driving motor armature winding structure that multilayer is equidistant |
| CN111371223A (en) * | 2020-04-20 | 2020-07-03 | 株洲中车时代电气股份有限公司 | Stator winding, stator with same, motor and vehicle |
| CN212435461U (en) * | 2020-09-16 | 2021-01-29 | 福建艺达电驱动股份有限公司 | Short-pitch motor stator |
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