CN210490574U - Flat wire motor winding slot internal structure with conductors with different thicknesses - Google Patents
Flat wire motor winding slot internal structure with conductors with different thicknesses Download PDFInfo
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- CN210490574U CN210490574U CN201921996134.8U CN201921996134U CN210490574U CN 210490574 U CN210490574 U CN 210490574U CN 201921996134 U CN201921996134 U CN 201921996134U CN 210490574 U CN210490574 U CN 210490574U
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Abstract
The patent provides a flat wire motor winding slot inner structure which can reduce the skin effect and the motor copper consumption, has higher slot fullness rate and high efficiency and has conductors with different thicknesses, and a plurality of conductors are arranged in a slot along the radial direction of a motor; at least one conductor close to the air gap is composed of more than two sub-conductors arranged in the radial direction of the motor, at least one conductor far away from the air gap is an integral layer in the radial direction of the motor, the thickness of each sub-conductor in the radial direction of the motor is smaller than that of the integral layer far away from the air gap, and the cross section area of each conductor close to the air gap and the cross section area of the conductor far away from the air gap, which are composed of the sub-conductors, are the same.
Description
Technical Field
The patent relates to a flat wire motor winding, in particular to a structure of a winding in a wire slot.
Background
With the development of power motors, the development trend of using flat section conductors for power motors is. The flat wire motor winding is formed by connecting flat conductors (flat copper wires) penetrating through wire slots on an iron core at the end parts extending out of the wire slots. The conventional flat wire motor winding slot inner structure is provided with a plurality of flat copper wires with the same thickness in a slot along the radial direction of a motor.
However, because the flat copper wire has a large thickness, a severe skin effect is generated under the action of a high-frequency magnetic field of the motor, so that the alternating current resistance of the conductor is increased, the copper consumption of the motor is increased, and the efficiency is reduced. There is a need for a winding structure that reduces the skin effect and is relatively simple.
Disclosure of Invention
The purpose of this patent is to provide one kind can enough reduce skin effect and motor copper consumption, has higher groove filling rate again, efficient flat wire motor winding inslot structure that has different thickness conductors.
The structure is characterized in that a flat wire motor winding slot structure with conductors with different thicknesses is provided with a plurality of conductors in the slot along the radial direction of a motor; at least one conductor close to the air gap is composed of more than two sub-conductors arranged in the radial direction of the motor, at least one conductor far away from the air gap is an integral layer in the radial direction of the motor, the thickness of each sub-conductor in the radial direction of the motor is smaller than that of the integral layer far away from the air gap, and the cross section area of each conductor close to the air gap and the cross section area of the conductor far away from the air gap, which are composed of the sub-conductors, are the same.
As a further improvement to the above-described structure of the flat wire motor winding slot, at least one of the sub-conductors is composed of two or more grandchild conductors arranged in the circumferential direction of the motor.
As a further improvement to the above-described structure in the winding slot of a flat wire motor, at least one integral layer is composed of more than two sub-conductors arranged in the circumferential direction of the motor.
The beneficial effect of this patent:
it has been found that the skin effect is most pronounced for the conductors in the slots, the closer the conductors are to the air gap between the rotor and the stator of the machine, and the weaker the skin effect is for the conductors further away from the air gap.
Therefore, the conductor close to the air gap in the wire slot is composed of more than two sub-conductors, the thickness of the sub-conductors is inevitably smaller than that of the whole layer of the conventional motor winding, the thinner conductor has weak skin effect, the phenomenon of copper consumption increase caused by the skin effect can be greatly reduced, and the high-efficiency working rotating speed of the motor can be greatly improved; the conductor farther from the air gap is integrated with the thick layer which is the same as the conventional motor winding, so that the slot filling rate is improved.
Therefore, the winding can reduce the skin effect and the copper consumption of the motor and has higher slot filling rate, so that the motor efficiency is high and the working rotating speed can be greatly improved.
Of course, the cross-sectional area of each conductor (composite layer conductor) that is made up of sub-conductors near the air gap is the same as the cross-sectional area of the overall layer conductor away from the air gap, in order to ensure that the resistance of the conductors forming the winding is substantially the same.
This patent is only to the conductor structure in the wire casing injectd, as to how to connect between the conductor tip that stretches out the wire casing belongs to prior art, for example, connect in parallel, establish ties, connect in parallel after establishing ties earlier, connect in series after establishing ties earlier etc. between the tip of each sub-conductor of constitution a conductor.
The overall layer conductor in the slot or the composite layer conductor composed of the sub-conductors may be composed of one or more conductors in the width direction (for example, one sub-conductor is composed of more than two sub-conductors, and the overall layer is composed of more than two sub-conductors), or a mixture of the two.
The whole layer conductor, the branch conductor, the sub-conductor and the sub-conductor can be equal in width or unequal in width.
For the sub-conductor with a thinner thickness, the working frequency can be determined according to the rotating speed requirement of the motor, and then the thickness of the sub-conductor can be calculated according to the acceptable occurrence degree of the skin effect. For the integral layer conductor with thicker thickness, the thickness of the integral layer conductor can be determined according to the design requirement of the winding and the number of turns of the motor and the current requirement. The number of thin conductors constituting the composite layer can be determined from the thickness of the sub-conductors and the thickness of the conductor in the whole layer.
Drawings
Fig. 1 is a schematic view of the structure in a winding slot of a flat wire motor of embodiment 1;
fig. 2 is a schematic diagram of the structure inside the winding slot of the flat wire motor of embodiment 2.
Detailed Description
Example 1:
referring to the structure in the winding slot of the flat wire motor with conductors of different thicknesses shown in fig. 1, in the slot 1, along the radial direction of the motor, there are 6 conductors, wherein two conductors close to the air gap 2 are composite layer conductors 3, and four conductors far away from the air gap 2 are integral layer conductors 4. The composite layer conductor 3 is composed of two sub-conductors 31 arranged in the radial direction of the motor, and the monolithic layer conductor 4 is a monolithic layer in the radial direction of the motor. The sub-conductors 31 each have a thickness in the radial direction of the motor smaller than the thickness of the monolithic conductor 4. The cross-sectional area of the composite layer conductor 3 composed of the two sub-conductors 31 is the same as the cross-sectional area of the entire layer conductor 4.
Example 2:
referring to the structure in the winding slot of the flat wire motor with conductors of different thicknesses shown in fig. 1, in the slot 1, along the radial direction of the motor, there are 6 conductors, wherein two conductors close to the air gap 2 are composite layer conductors 3, and four conductors far away from the air gap 2 are integral layer conductors 4. The composite layer conductor 3 is composed of two layers of sub-conductors 31 arranged in the radial direction of the motor, and each sub-conductor 31 is composed of two sub-conductors 311 arranged in the circumferential direction of the motor. The monolithic conductor 4 is a monolithic layer in the radial direction of the motor and is composed of two subconductors 411 arranged in the circumferential direction of the motor. The thicknesses of the grandchild conductors 311 in the motor radial direction are each smaller than the thickness of the branch conductor 411. The cross-sectional area of the composite layer conductor 3 composed of the four grandchild conductors 311 is the same as the cross-sectional area of the whole layer conductor 4 composed of the two branch conductors 411.
The protection range of the patent is not influenced by the number of sub-conductor layers and the specific shape of the conductor, the connection form of the winding end part, the connection process and the like, and the state of the conductor outside the iron core wire slot, the connection form and the like.
Claims (3)
1. The structure is characterized in that a flat wire motor winding slot structure with conductors with different thicknesses is provided with a plurality of conductors in the slot along the radial direction of a motor; the method is characterized in that: at least one conductor close to the air gap is composed of more than two sub-conductors arranged in the radial direction of the motor, at least one conductor far away from the air gap is an integral layer in the radial direction of the motor, the thickness of each sub-conductor in the radial direction of the motor is smaller than that of the integral layer far away from the air gap, and the cross section area of each conductor close to the air gap and the cross section area of the conductor far away from the air gap, which are composed of the sub-conductors, are the same.
2. The flat wire motor winding slot interior structure of claim 1, wherein: at least one sub-conductor is composed of more than two grandchild conductors arranged in the circumferential direction of the motor.
3. The flat wire motor winding slot interior structure of claim 1, wherein: at least one integral layer is composed of more than two sub-conductors arranged in the circumferential direction of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921996134.8U CN210490574U (en) | 2019-11-19 | 2019-11-19 | Flat wire motor winding slot internal structure with conductors with different thicknesses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921996134.8U CN210490574U (en) | 2019-11-19 | 2019-11-19 | Flat wire motor winding slot internal structure with conductors with different thicknesses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210490574U true CN210490574U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921996134.8U Active CN210490574U (en) | 2019-11-19 | 2019-11-19 | Flat wire motor winding slot internal structure with conductors with different thicknesses |
Country Status (1)
| Country | Link |
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| CN (1) | CN210490574U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115276288A (en) * | 2022-07-29 | 2022-11-01 | 天蔚蓝电驱动科技(江苏)有限公司 | Flat wire motor stator and flat wire motor |
-
2019
- 2019-11-19 CN CN201921996134.8U patent/CN210490574U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115276288A (en) * | 2022-07-29 | 2022-11-01 | 天蔚蓝电驱动科技(江苏)有限公司 | Flat wire motor stator and flat wire motor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210000 No.2 Huxiao Road, Chunhua street, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Fuli Heavy Industry Co.,Ltd. Address before: 210000 No.2 Huxiao Road, Chunhua street, Jiangning District, Nanjing City, Jiangsu Province Patentee before: NANJING HAOLONG ELECTRONICS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |