CN214124954U - Stator, motor and vehicle - Google Patents
Stator, motor and vehicle Download PDFInfo
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- CN214124954U CN214124954U CN202023196102.5U CN202023196102U CN214124954U CN 214124954 U CN214124954 U CN 214124954U CN 202023196102 U CN202023196102 U CN 202023196102U CN 214124954 U CN214124954 U CN 214124954U
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Abstract
The application relates to a stator, a motor and a vehicle. Wherein, the stator includes: the stator core comprises a stator yoke and a plurality of stator teeth arranged along the inner peripheral side of the stator yoke at intervals, a stator slot is formed between each adjacent stator tooth and the stator yoke, and a flat wire winding is wound in each stator slot; the two sides of the width direction of the stator teeth are parallel to each other, and the width of the stator slot is gradually increased from one end far away from the stator yoke to the other end. The scheme that this application provided through establishing the stator tooth into parallel tooth, magnetic flux density obtains effectively promoting, can effectively improve the smooth and easy nature of circulation in main magnetic circuit, and through around establishing the flat wire winding in the stator slot to make full use of groove area can effectively promote motor torque density and efficiency.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a stator, a motor and a vehicle.
Background
As shown in fig. 1, in the related art, the rectangular conductor is used in the flat-wire motor, so that the slot shape of the stator slot is a parallel slot, i.e. two sides of the same slot are parallel. At this point, the stator teeth are trapezoidal in shape, resulting in the smallest tooth width near the slot and the largest tooth width near the slot bottom. When the motor works, a magnetic field enters the stator teeth from the air gap (or enters the air gap from the stator teeth), the magnetic resistance at the narrowest part of the stator teeth is the largest and is easy to saturate, the circulation of the magnetic field is blocked, and the peak torque of the motor is reduced to a certain extent; the teeth of the stator at the bottom of the slot are wider, the working magnetic density is low, but the teeth are excessive, the required tooth width ratio is actually small, and certain waste is caused.
SUMMERY OF THE UTILITY MODEL
In order to solve or partially solve the problems existing in the related art, the first aspect of the application provides a stator, the stator teeth of the stator adopt parallel teeth, the utilization rate of the stator teeth can be improved, the circulation of a magnetic field is improved, a flat wire winding is wound in a stator slot, the area of the slot is fully utilized, and the torque density and the efficiency of a motor can be effectively improved.
A first aspect of the present application provides a stator comprising: the stator core comprises a stator yoke and a plurality of stator teeth arranged along the inner peripheral side of the stator yoke at intervals, a stator slot is formed between each adjacent stator tooth and the stator yoke, and a flat wire winding is wound in each stator slot; the two sides of the stator teeth in the width direction are parallel to each other, and the width of the stator slot is gradually increased from one end far away from the stator yoke to the other end.
According to an embodiment of the present application, the number of the flat wire windings is a plurality of, and a plurality of the flat wire windings are arranged along the length direction of the stator slot, and the width of the flat wire windings is gradually increased from one end away from the stator yoke to the other end.
The number of flat wire winding is a plurality of, and the width is different, and a plurality of flat wire winding are arranged along the length direction of stator slot, and the width is crescent to the other end by the one end of keeping away from the stator yoke to corresponding with the shape of stator slot, thereby can reach the effect of filling up the stator slot, thereby can realize the effect that promotes motor torque density and efficiency.
According to another embodiment of the present application, a gap is formed between the flat wire winding and at least one adjacent stator tooth, and a round wire winding is wound in the gap.
In this embodiment, the width of the flat wire winding is the same (defining the radial extension direction of the stator slot along the stator yoke as the length direction, and the direction perpendicular to the length direction as the width direction), and a plurality of flat wire windings with the same width are arranged along the length direction of the stator slot, and because the width of the stator slot is gradually increased from one end far away from the stator yoke to the other end, a gap is generated between the flat wire winding and the adjacent stator tooth, and the round wire winding is wound in the gap to improve the slot filling factor of the stator slot, so that the torque density and the efficiency of the motor can be effectively improved.
Specifically, the flat wire winding can be vertically arranged along the middle part of the stator slot, so that gaps are generated between the flat wire winding and adjacent stator teeth, and the effect of improving the slot filling rate can be realized by winding round wire windings in the gaps on two sides of the flat wire winding.
Of course, a plurality of flat wire windings can be arranged along one side of the stator slot, namely, a gap is formed between the flat wire winding and one of two adjacent stator teeth, and the slot filling rate can be improved by winding the round wire winding in the gap, so that the torque density and the efficiency of the motor can be improved.
In the above embodiments, the flat wire winding is connected in parallel or in series with the round wire winding.
The flat wire winding and the round wire winding can be connected in parallel or in series, and the current densities of the two conductors are the same or similar when the flat wire winding and the round wire winding are connected in series, so that the heating of the conductors is the same or similar, and the temperature difference distribution of the conductors is more uniform.
In some embodiments, an end of the stator slot distal from the stator yoke is notched.
The arrangement of the notches can facilitate winding of the windings, and meanwhile, the magnetic field distribution of the stator teeth and the stator yoke can be changed by optimizing the size of the notches, so that the working performance of the motor is improved.
In some embodiments, the stator teeth include a root and a crown, the root having one end connected to the stator yoke and another end formed with the crown, adjacent crowns defining the slot therebetween.
In some embodiments, a width of a side of the flat wire winding distal from the stator yoke is greater than a width of the slot.
The width of the notch is smaller than that of the flat wire winding close to one side of the notch, so that the flat wire winding can be prevented from being separated from the stator slot from the notch, and the reliability of the arrangement of the flat wire winding is improved.
In some embodiments, the stator yoke is annular; and/or the stator slots are trapezoidal.
A second aspect of the present application provides an electric machine comprising: a rotor; and a stator as claimed in any one of the embodiments of the first aspect, the rotor being provided inside or outside the stator.
The motor provided by the second aspect of the present application may be an inner rotor motor or an outer rotor motor, and includes the stator described in any one of the embodiments of the first aspect, so that the technical effects described in any one of the embodiments are achieved, and details are not repeated herein.
A third aspect of the present application provides a vehicle comprising: a vehicle body; and the motor according to any one of the embodiments of the second aspect, the motor being provided on the vehicle body.
The vehicle provided by the third aspect of the present application includes the motor described in the embodiment of the second aspect, so that the technical effects described in any of the above embodiments are achieved, and details are not repeated herein.
The technical scheme provided by the application can comprise the following beneficial effects:
the stator that this application embodiment provided, including stator core, stator core includes stator yoke and a plurality of stator tooth, and a plurality of stator tooth set up along the inner peripheral side interval of stator yoke, and is injectd between adjacent stator tooth and the stator yoke and has the stator slot. The two sides of the width direction of the stator teeth are parallel to each other, namely the stator teeth are parallel teeth, so that the technical problems that the magnetic resistance of the narrower part of the stator teeth is large and the stator teeth are easy to saturate when the stator teeth are trapezoidal teeth in the related technology can be solved, the situations that the working magnetic density of the wider part of the stator teeth is low and the tooth width is excessive are avoided, the main magnetic circuit of the motor is more smooth, and the uniformity of the magnetic flux density is improved. Meanwhile, the width of the stator slot is gradually increased from one end far away from the stator yoke to the other end, and the stator slot is fully filled by winding enough flat wire windings in the stator slot, so that the slot filling rate is further improved, and the torque density and the efficiency of the motor can be effectively improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a partial structural view of a stator in the related art;
FIG. 2 is a schematic view of a portion of a stator according to an embodiment of the present application;
FIG. 3 is a schematic view of a portion of a stator according to another embodiment of the present application;
FIG. 4 is a schematic view of a portion of a stator according to yet another embodiment of the present application;
FIG. 5 is a schematic structural diagram of a stator according to an embodiment of the present disclosure;
fig. 6 is a block diagram schematically illustrating a structure of a motor according to an embodiment of the present application;
fig. 7 is a block diagram schematically illustrating the structure of a vehicle according to the embodiment of the present application.
Reference numerals:
1. a stator; 10. a stator yoke; 20. stator teeth; 201. a crown; 30. a stator slot; 401. a flat wire winding; 402. a round wire winding; 301. a notch; 2. a motor; 21. a rotor; 3. a vehicle; 31. a vehicle body.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the related art, the stator teeth of the flat-wire motor are trapezoidal teeth, the stator slots are parallel slots, so that the magnetic resistance is large at the narrow part of the stator teeth, the magnetic field is easily saturated, and the circulation of the magnetic field can be blocked, the peak torque of the motor is reduced to a certain extent, the teeth of the bottom part of the stator teeth close to the stator slots are wide, the working magnetic density is low, and the tooth width is excessive, so that certain waste is caused.
To above-mentioned problem, this application embodiment provides a stator, through establishing the stator tooth into parallel tooth, can make the motor main magnetic circuit more unobstructed, and through being equipped with full winding in the stator slot, improves the utilization ratio of stator tooth, can help promoting motor torque density and efficiency.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a partial structural schematic view of a stator 1 according to an embodiment of the present application.
Referring to fig. 1, a first aspect of the present application provides a stator 1, including a stator core, where the stator core includes a stator yoke 10 and a plurality of stator teeth 20 arranged at intervals along an inner circumferential side of the stator yoke 10, a stator slot 30 is formed between adjacent stator teeth 20 and the stator yoke 10, and a flat wire winding 401 is wound in the stator slot 30; both sides of the stator teeth 20 in the width direction are parallel to each other, and the width of the stator slot 30 is gradually increased from one end away from the stator yoke 10 to the other end.
The stator 1 provided by the first aspect of the present application is used for a flat wire motor, and the stator 1 includes a stator core, the stator core includes a stator yoke 10 and a plurality of stator teeth 20, the plurality of stator teeth 20 are arranged at intervals along an inner peripheral side of the stator yoke 10, and a stator slot 30 is defined between the adjacent stator teeth 20 and the stator yoke 10.
The two sides of the width direction of the stator teeth 20 are parallel to each other, that is, the stator teeth 20 are parallel teeth, so that the technical problems that the magnetic resistance of the narrower part of the stator teeth 20 is large and the saturation is easy when the stator teeth 20 are trapezoidal teeth in the related art can be solved, and the situations that the working magnetic density of the wider part of the stator teeth 20 is low and the tooth width is excessive are avoided, so that the main magnetic circuit of the motor is more unobstructed, and the magnetic flux density is effectively improved.
Meanwhile, because the stator teeth 20 are parallel teeth, the width of the stator slot 30 gradually increases from one end far away from the stator yoke 10 to the other end, and then the stator slot 30 is fully filled by winding enough flat wire windings 401 in the stator slot 30, so as to further improve the slot filling rate and improve the utilization rate of the stator teeth 20, thereby effectively improving the torque density and the efficiency of the motor 2.
According to an embodiment of the present application, the number of the flat wire windings 401 is plural, the plurality of flat wire windings 401 are arranged along the length direction of the stator slot 30, and the widths of the plurality of flat wire windings 401 gradually increase from one end away from the stator yoke 10 to the other end.
The number of the flat wire windings 401 is plural, and the widths are different (the direction of the stator slot 30 extending along the radial direction of the stator yoke 10 is defined as the length direction, and the direction perpendicular to the length direction is the width direction), the plural flat wire windings 401 are arranged along the length direction of the stator slot 30, and the width is gradually increased from one end away from the stator yoke 10 to the other end, so as to correspond to the shape of the stator slot 30, thereby achieving the effect of filling the stator slot 30, and achieving the effect of improving the torque and efficiency of the motor 2.
As shown in fig. 2 and 3, according to another embodiment of the present application, a gap is formed between the flat wire winding 401 and the adjacent at least one stator tooth 20, and the round wire winding 402 is wound in the gap.
In this embodiment, the flat wire windings 401 have the same width, and a plurality of flat wire windings 401 having the same width are arranged along the length direction of the stator slot 30, and since the width of the stator slot 30 gradually increases from one end away from the stator yoke 10 to the other end, a gap is generated between the flat wire winding 401 and the adjacent stator tooth 20, and the round wire winding 402 is wound in the gap to increase the slot filling factor of the stator slot 30, so that the torque density and the efficiency of the motor 2 can be effectively improved.
The flat wire winding 401 can be vertically arranged along the middle of the stator slot 30, so that gaps are generated between the flat wire winding 401 and the adjacent stator teeth 20, and the round wire winding 402 is wound in the gaps on the two sides of the flat wire winding, so that the effect of improving the slot filling rate can be achieved, and the torque density and the efficiency of the motor can be improved, as shown in fig. 2.
Of course, a plurality of flat wire windings 401 may be arranged along one side of the stator slot 30, that is, a gap is generated between the flat wire winding 401 and one of the two adjacent stator teeth 20, and by winding the round wire winding 402 in the gap, the slot filling ratio can be similarly improved, and the torque density and efficiency of the motor 2 can be further improved, as shown in fig. 3.
In the above embodiment, the flat wire winding 401 is connected in parallel or in series with the round wire winding 402.
The flat wire winding 401 and the round wire winding 402 can be connected in parallel or in series, and the current densities of the two conductors are the same or similar when the two conductors are connected in series, so that the heating of the two conductors is also the same or similar, and the temperature difference distribution of the conductors is more uniform.
As shown in fig. 2-5, in some embodiments, the end of the stator slot 30 distal from the stator yoke 10 is provided with a notch 301.
The slots 301 are arranged to facilitate winding of the windings, and at the same time, by optimizing the size of the slots 301, the magnetic field distribution of the stator teeth 20 and the stator yoke 10 can be changed to improve the operating performance of the motor.
As shown in fig. 2 to 4, in some embodiments, the stator teeth 20 include a root having one end connected to the stator yoke 10 and the other end formed with a crown 201, and the crowns 201 of adjacent stator teeth 20 define a slot 301 therebetween.
As shown in fig. 2-4, in some embodiments, the width of the side of the flat wire winding 401 away from the stator yoke 10 is greater than the width of the slot 301. This prevents the flat wire winding 401 from coming off the stator slot 30 from the notch 301, and improves the reliability of the arrangement of the flat wire winding 401.
As shown in fig. 5, in some embodiments, the stator yoke 10 is annular.
As shown in fig. 2-4, in some embodiments, the stator slots 30 are trapezoidal in shape.
Fig. 6 is a block diagram schematically illustrating a structure of the motor 2 according to the embodiment of the present application.
Referring to fig. 6, a second aspect of the present application provides an electric machine 2 comprising: a rotor 21; and a stator 1 as in any one of the first aspect embodiments, the rotor 21 being provided inside or outside the stator 1.
The motor 2 provided in the second aspect of the present application may be an inner rotor motor or an outer rotor motor, and includes the stator 1 described in any one of the embodiments of the first aspect, so that the technical effects described in any one of the embodiments are achieved, and details are not repeated herein.
Fig. 7 is a block diagram schematically illustrating the structure of the vehicle 3 according to the embodiment of the present application.
Referring to fig. 7, a third aspect of the present application provides a vehicle 3 comprising: a vehicle body 31; and the motor 2 according to any one of the embodiments of the second aspect, wherein the motor 2 is provided on the vehicle body 31.
The vehicle 3 provided by the third aspect of the present application includes the motor 2 described in the embodiment of the second aspect, so that the technical effects described in any of the above embodiments are achieved, and details are not repeated herein.
The stator provided by the present application is described in detail below with reference to a specific embodiment.
As shown in fig. 2 to 5, the present application provides a stator 1 including a stator core including a stator yoke 10 and a plurality of stator teeth 20.
The stator yoke 10 is annular, the stator teeth 20 are parallel teeth (that is, two sides of the stator teeth in the width direction are parallel to each other), the plurality of stator teeth 20 are arranged at intervals along the inner peripheral side of the stator yoke 10, a stator slot 30 is defined between the adjacent stator teeth 20 and the stator yoke 10, the width of the stator slot 30 is gradually increased from one end away from the stator yoke 10 to the other end, a flat wire winding 401 and a round wire winding 402 are simultaneously wound in the stator slot 30, the round wire winding 402 is wound in a gap between the flat wire winding 401 and the stator teeth 10, and a notch 301 is formed in one end of the stator slot 30 away from the stator yoke 10.
Establish to parallel tooth through establishing the stator tooth, the stator slot is established to non-parallel groove, winds in the stator slot and establishes the flat wire winding, can produce the clearance between flat wire winding and the adjacent stator tooth to wind in the clearance between flat wire winding and stator tooth and establish the round wire winding, thereby not only can realize improving the smooth and easy nature of the circulation of main field, still can realize improving the utilization ratio of stator tooth, promote the full rate of groove, in order to realize the effect that promotes motor torque density and efficiency.
To sum up, the stator that this application provided is through establishing the stator tooth into parallel tooth to at the stator inslot simultaneously around establishing two kinds of windings of flat line and round wire, utilize the full rate of flat line winding lifting groove, utilize parallel tooth of round wire winding collocation, promote stator tooth utilization ratio, combined the advantage of two kinds of windings, further promoted motor torque density and efficiency.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A stator, comprising:
the stator core comprises a stator yoke and a plurality of stator teeth arranged along the inner peripheral side of the stator yoke at intervals, a stator slot is formed between each adjacent stator tooth and the stator yoke, and a flat wire winding is wound in each stator slot;
the two sides of the stator teeth in the width direction are parallel to each other, and the width of the stator slot is gradually increased from one end far away from the stator yoke to the other end.
2. The stator of claim 1, wherein:
the number of the flat wire windings is multiple, the flat wire windings are arranged along the length direction of the stator slot, and the width of the flat wire windings is gradually increased from one end far away from the stator yoke to the other end.
3. The stator of claim 1, wherein:
and a gap is formed between the flat wire winding and at least one adjacent stator tooth, and a round wire winding is wound in the gap.
4. A stator according to claim 3, wherein:
the flat wire winding is connected with the round wire winding in parallel or in series.
5. The stator according to any one of claims 1 to 4, wherein:
and one end of the stator slot, which is far away from the stator yoke, is provided with a notch.
6. The stator of claim 5, wherein:
the stator tooth includes tooth root and crown, the one end of tooth root with the stator yoke links to each other, and the other end is formed with the crown, and is adjacent inject between the crown the notch.
7. The stator of claim 5, wherein:
the width of one side of the flat wire winding, which is far away from the stator yoke, is larger than the width of the notch.
8. The stator according to any one of claims 1 to 4, wherein:
the stator yoke is annular; and/or
The stator slots are trapezoidal.
9. An electric machine, comprising:
a rotor; and
a stator according to any one of claims 1 to 8, the rotor being provided on the inside or outside of the stator.
10. A vehicle, characterized by comprising:
a vehicle body; and
the electric machine of claim 9, said electric machine being disposed on said vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023196102.5U CN214124954U (en) | 2020-12-24 | 2020-12-24 | Stator, motor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023196102.5U CN214124954U (en) | 2020-12-24 | 2020-12-24 | Stator, motor and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN214124954U true CN214124954U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023196102.5U Active CN214124954U (en) | 2020-12-24 | 2020-12-24 | Stator, motor and vehicle |
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| CN (1) | CN214124954U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614608A (en) * | 2022-01-21 | 2022-06-10 | 安徽沃弗永磁科技有限公司 | Permanent magnet motor with double-layer stator windings |
| CN114785006A (en) * | 2022-05-12 | 2022-07-22 | 哈尔滨理工大学 | Novel unequal-area flat wire winding permanent magnet motor |
-
2020
- 2020-12-24 CN CN202023196102.5U patent/CN214124954U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614608A (en) * | 2022-01-21 | 2022-06-10 | 安徽沃弗永磁科技有限公司 | Permanent magnet motor with double-layer stator windings |
| CN114614608B (en) * | 2022-01-21 | 2024-04-19 | 安徽沃弗永磁科技有限公司 | Permanent magnet motor with double-layer stator windings |
| CN114785006A (en) * | 2022-05-12 | 2022-07-22 | 哈尔滨理工大学 | Novel unequal-area flat wire winding permanent magnet motor |
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