CN219779883U - Stator, driving motor and automobile - Google Patents
Stator, driving motor and automobile Download PDFInfo
- Publication number
- CN219779883U CN219779883U CN202320858892.3U CN202320858892U CN219779883U CN 219779883 U CN219779883 U CN 219779883U CN 202320858892 U CN202320858892 U CN 202320858892U CN 219779883 U CN219779883 U CN 219779883U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 99
- 239000010959 steel Substances 0.000 claims abstract description 99
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model relates to a stator, a driving motor and an automobile, which comprise a stator core, wherein the stator core is provided with a plurality of stator grooves which are distributed at intervals along the circumferential direction; and the slot wedge structure comprises a connecting body and a plurality of steel belt slot wedges, the plurality of steel belt slot wedges are arranged on the connecting body at intervals along the circumferential direction to form an integrated structure, and the steel belt slot wedges are correspondingly plugged at the notch of the stator slot one by one. Compared with the plastic slot wedge, the steel strip slot wedge is integrated on the connecting body, a plurality of stator slots can be plugged simultaneously by the steel strip slot wedge once, the installation is more convenient and efficient, the thickness of the steel strip slot wedge is smaller than that of the plastic slot wedge, the occupied space of the stator slots is less, the full slot rate can be improved, the motor efficiency is further improved, the metal characteristic of the steel strip slot wedge also has a certain magnetic conduction effect, the magnetic field saturation of the tooth part of the stator core can be reduced, the peak torque loss of the motor is further reduced, and the torque fluctuation degree is lightened.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a stator, a driving motor and an automobile.
Background
The flat wire winding is widely applied to a driving motor of an electric automobile because of higher full slot rate and better heat dissipation performance. Currently, there are three main forms of flat wire windings on the market: the hairpin winding (Hair-Pin), the I-Pin and the W-Pin, wherein the W-Pin winding has no welding end, and only a small number of welding spots exist at the wire outlet, so that the reliability is greatly improved, the manufacturing process is simplified, the heights at the two ends of the winding assembly and the end loss are greatly reduced, and the W-Pin has great advantages for miniaturization, high efficiency and high power density of the driving motor.
However, since the W-Pin winding has no special structure of the welding end, the wire can only be led down from the slot, which results in that the slot of the stator core must be in the form of an open slot before the stator core is led down, and a specific blocking structure, such as a plastic slot wedge, must be installed at the slot after the stator core is led down, so as to fix the wire and limit the wire from being led out due to radial displacement. However, the plugging structures such as the plastic slot wedge are added, so that the thickness is large, the occupied space in the slot is large, the full slot rate is influenced, and the slot is dug in the slot stator tooth part, so that the tooth part magnetic field is easy to saturate, the peak torque of the motor is reduced, the motor efficiency is reduced, and the torque fluctuation is increased.
Disclosure of Invention
Accordingly, it is necessary to provide a stator, a drive motor, and an automobile, which solve the problems of a reduction in peak torque, a reduction in motor efficiency, and an increase in torque ripple.
In one aspect, the present utility model provides a stator comprising:
the stator core is provided with a plurality of stator slots which are distributed at intervals along the circumferential direction; the method comprises the steps of,
the slot wedge structure comprises a connecting body and a plurality of steel belt slot wedges, wherein the steel belt slot wedges are arranged on the connecting body at intervals along the circumferential direction to form an integrated structure, and the steel belt slot wedges are plugged at the notch of the stator slot in a one-to-one correspondence manner.
When the stator of above-mentioned scheme is manufactured, after the stator inslot of stator core winds the dress and accomplishes the wire, insert the slot wedge structure in the middle of the stator core to the shutoff that makes the steel band slot wedge can one-to-one sets up in the notch department of stator groove, thereby realizes the spacing to installing the wire in the stator groove. Compared with the traditional plastic slot wedge, in the scheme, the plurality of steel belt slot wedges are integrated on the connecting body, a plurality of stator slots can be plugged simultaneously by the plurality of steel belt slot wedges once, the installation is more convenient and efficient, the thickness of the steel belt slot wedges is smaller than that of the plastic slot wedges, the occupied space of the stator slots is less, the full slot rate can be improved, the motor efficiency is further improved, the metal characteristics of the steel belt slot wedges also have a certain magnetic conduction effect, the magnetic field saturation of the teeth of the stator iron core can be reduced, the peak torque loss of the motor is reduced, and the torque fluctuation degree is lightened.
The technical scheme of the utility model is further described as follows:
in one embodiment, the coupling body is connected to the same end of a plurality of the steel strip wedges.
In one embodiment, the connecting body is connected to the middle position or any position near the middle of the plurality of steel belt slot wedges, and is positioned on one side of the steel belt slot wedges away from the stator core.
In one embodiment, the number of the connecting bodies is two, one connecting body is connected to one end of the plurality of steel belt slot wedges in the length direction, and the other connecting body is connected to the other end of the plurality of steel belt slot wedges in the length direction.
In one embodiment, the steel belt slot wedge comprises a blocking portion and a positioning portion, the positioning portion is arranged on at least one side of the blocking portion in the width direction, a step groove is formed between the positioning portion and the blocking portion, the blocking portion is inserted into a notch of the stator groove, a tooth portion of the stator core is inserted into the step groove, and the positioning portion is in abutting connection with a tooth portion end face of the stator core.
In one embodiment, all the steel strip wedges are provided with through grooves extending through the thickness direction.
In one embodiment, the steel belt slot wedge comprises a solid steel belt slot wedge and a grooved steel belt slot wedge, and a preset number of solid steel belt slot wedges are arranged between two adjacent grooved steel belt slot wedges;
the number of solid steel strip wedges between different adjacent two of said slotted steel strip wedges may be the same or different.
In one embodiment, the steel strip slot wedge is provided with a plurality of through slots penetrating through the thickness direction, and the through slots are distributed along the length and/or width direction of the steel strip slot wedge.
In another aspect, the present utility model also provides a drive motor comprising a stator as described above.
In addition, the utility model also provides an automobile, which comprises the driving motor.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an assembly structure diagram of a stator according to an embodiment of the present utility model.
Fig. 2 is a schematic structural view of the slot wedge structure of fig. 1.
Fig. 3 is an expanded plan view of a slot wedge structure with one coupling body.
Fig. 4 is an expanded plan view of a slot wedge structure having two coupling bodies.
Fig. 5 is an expanded plan view of a steel strip wedge provided through slot according to an embodiment.
Fig. 6 is an expanded plan view of another embodiment of a steel strip wedge provided through slot.
Fig. 7 is an expanded plan view of a steel strip wedge provided through slot of yet another embodiment.
Fig. 8 is a schematic cross-sectional view of a steel strip wedge according to an embodiment.
Reference numerals illustrate:
100. a stator; 10. a stator core; 11. a stator groove; 20. a slot wedge structure; 21. a coupling body; 22. a steel belt slot wedge; 221. a through groove; 222. a blocking part; 223. and a positioning part.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.
In the description of the present utility model, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
Referring to fig. 1 and 2, a stator 100 according to an embodiment of the present utility model includes a stator core 10 and a slot wedge structure 20. The stator core 10 is of a cylindrical structure, and is specifically formed by an annular yoke portion and a plurality of tooth portions, wherein the plurality of tooth portions are mounted on an inner annular wall of the yoke portion along a circumferential direction, and the tooth portions extend toward a radial direction of the stator core 10.
The stator core 10 is provided with a plurality of stator slots 11 arranged at intervals in the circumferential direction, and it is easy to understand that one stator slot 11 is formed by two adjacent tooth portions at intervals, and the depth direction of the stator slot 11 corresponds to the radial direction of the stator core 10. The stator slot 11 has a slot cavity and a notch, and the wire is conveniently wound from the notch directly into the slot cavity. Typically, a plurality of wires are stacked in the radial and/or circumferential direction within the slot cavity to enhance the performance of the drive motor.
The slot wedge structure 20 comprises a connecting body 21 and a plurality of steel strip slot wedges 22, wherein the plurality of steel strip slot wedges 22 are arranged on the connecting body 21 at intervals along the circumferential direction to form an integrated structure, and the steel strip slot wedges 22 are plugged at the notch of the stator slot 11 in a one-to-one correspondence manner. To prevent the wire from being removed from the stator groove 11 by radial movement in the stator groove 11.
In summary, implementing the technical scheme of the embodiment has the following beneficial effects: when the stator 100 of the above scheme is manufactured, after the wire is wound in the stator slot 11 of the stator core 10, the slot wedge structure 20 is inserted into the middle of the stator core 10, so that the steel belt slot wedges 22 can be plugged at the notch of the stator slot 11 in a one-to-one correspondence manner, thereby realizing the limit of the wire installed in the stator slot 11. Compared with the traditional plastic slot wedge, in the scheme, the plurality of steel belt slot wedges 22 are integrated on the connecting body 21, a plurality of stator slots 11 can be plugged simultaneously by the plurality of steel belt slot wedges 22 once, the installation is more convenient and efficient, in addition, the thickness of the steel belt slot wedges 22 is smaller than that of the plastic slot wedges, the occupied space of the stator slots 11 is less, the full slot rate can be improved, the motor efficiency is further improved, the metal characteristics of the steel belt slot wedges 22 also have a certain magnetic conduction effect, the magnetic field saturation of the tooth parts of the stator core 10 can be reduced, the peak torque loss of the motor is reduced, and the torque fluctuation degree is reduced.
The thickness, length, width, and other dimensional parameters of the steel strip wedge 22 may be flexibly designed according to actual needs, and are not particularly limited herein.
With continued reference to fig. 2 to 4, in this embodiment, the purpose of the connecting body 21 is to connect a plurality of steel belt slot wedges 22 into a single body, so as to improve the installation convenience. And the connection structure of the connecting body 21 and the plurality of steel belt slot wedges 22 can have various variants. For example, in some embodiments, the coupling body 21 is connected to the same end of a plurality of steel strip wedges 22. In this way, when the connecting body 21 is grasped during installation, the slot wedge structure 20 is put down from one axial port of the stator core 10, so that the steel belt slot wedges 22 are correspondingly and slidably inserted into the slots of the corresponding stator slots 11 one by one, and the installation mode is simple.
Alternatively, as an alternative to the above-described embodiment, the coupling body 21 is connected to the plurality of steel strip wedges 22 at a central position or at any position near the central position, and is located on the side of the steel strip wedges 22 away from the stator core 10. The present embodiment can achieve substantially the same technical effects as the above embodiments, except that the installation positions of the connection bodies 21 are required to be controlled to be designed on the side surface of the steel strip slot wedge 22 facing away from the stator core 10, so as to avoid the risk that the connection bodies 21 interfere with the teeth of the stator core 10 to affect the smooth and accurate insertion of the steel strip slot wedge 22 into the notch of the stator slot 11, and the wire is displaced from the stator slot 11.
Alternatively, as an alternative to the above two embodiments, there are provided two coupling bodies 21, one of which 21 is connected to one of the longitudinal ends of the plurality of steel strip wedges 22, and the other 21 is connected to the other of the longitudinal ends of the plurality of steel strip wedges 22. The two connecting bodies 21 positioned at the two ends of the length direction can improve the integral connection strength and the structural stability of the plurality of steel belt slot wedges 22, so that the steel belt slot wedges 22 are not easy to deform to cause the lead to slide out of the stator slot 11. During installation, the slot wedge structure 20 is inserted into the stator core 10 along the axial direction, then the steel belt slot wedge 22 is pressed towards the radial direction, and the steel belt slot wedge 22 can be inserted into the notch of the stator slot 11 to realize wire encapsulation.
As shown in fig. 8, further, in order to improve the installation accuracy of the steel strip slot wedge 22 and the stability of the insertion at the notch of the stator slot 11, the steel strip slot wedge 22 is prevented from being retracted by the outward extrusion force of the wire in the stator slot 11, and the packaging reliability of the wire is affected, in some embodiments, the steel strip slot wedge 22 includes a plugging portion 222 and a positioning portion 223, the positioning portion 223 is disposed at least one side of the plugging portion 222 in the width direction, a step slot is formed between the positioning portion 223 and the plugging portion 222, the plugging portion 222 is inserted into the notch of the stator slot 11, the tooth portion of the stator core 10 is inserted into the step slot, and the positioning portion 223 abuts against the tooth end face of the stator core 10. The positioning part 223 is abutted with the end surface of the tooth part, so that the positioning of the steel belt slot wedge 22 which is radially inserted can be realized, and the plugging part 222 is inserted into the notch of the stator slot 11 after installation, so that a limit plugging effect can be formed on a wire in the stator slot 11; and the tooth part of the stator core 10 is inserted in the step groove, so that the contact area can be increased to a certain extent, and further the friction force is increased to offset the outward pushing force exerted by the lead on the steel belt slot wedge 22, and the installation stability of the steel belt slot wedge 22 is ensured.
Preferably, the two sides of the plugging portion 222 in the width direction are connected with positioning portions 223, and the section of the steel belt slot wedge 22 is formed into a convex structure.
With continued reference to fig. 5-7, in addition to any of the above embodiments, all of the steel strip wedges 22 are provided with through grooves 221 extending through the thickness direction. The through groove 221 with a specific structure is manufactured on the steel belt slot wedge 22, so that the air gap magnetic field harmonic wave can be optimized, and the torque fluctuation can be reduced. And the through groove 221 can be formed by adopting machining such as stamping and the like and chemical machining, so that the manufacturability is high and the flexibility is high.
Alternatively, as an alternative to the above-described embodiment, the steel-belt wedge 22 includes two types of solid steel-belt wedge 22 and grooved steel-belt wedge 22, and a preset number of solid steel-belt wedges 22 are provided between two adjacent grooved steel-belt wedge 22; the number of solid steel strip wedges 22 between different adjacent two slotted steel strip wedges 22 may be the same or different. Therefore, the number and the positions of the steel belt slot wedges 22 with the slots and the realized steel belt slot wedges 22 are reasonably arranged, so that the air gap magnetic field harmonic wave can be flexibly adjusted and optimized according to different performance requirements of the power motor, and the torque fluctuation is reduced.
For example, one embodiment is shown in which a solid steel belt wedge 22 is disposed between each two slotted steel belt wedges 22 in a deployed state of the wedge structure 20. In another embodiment, a schematic diagram of the wedge structure 20 is shown in the expanded state with six solid steel belt wedges 22 disposed between each two slotted steel belt wedges 22. Of course, other embodiments may have other number of structural configurations, which are specifically designed according to actual needs, and will not be further described herein.
Further, the steel strip wedge 22 is provided with a plurality of through grooves 221 penetrating through the thickness direction, and the plurality of through grooves 221 are arranged along the length and/or width direction of the steel strip wedge 22. For example, the steel strip slot wedge 22 is shown with four through slots 221, and the through slots 221 are uniformly distributed at intervals along the length direction of the steel strip slot wedge 22 (i.e. the axial direction of the stator core 10), and meanwhile, the through slots 221 can further optimize the air gap field harmonic wave and reduce the torque fluctuation.
In summary, the present utility model also provides an automobile comprising a driving motor, wherein the driving motor comprises the stator 100 according to any of the above embodiments.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A stator, comprising:
the stator core is provided with a plurality of stator slots which are distributed at intervals along the circumferential direction; the method comprises the steps of,
the slot wedge structure comprises a connecting body and a plurality of steel belt slot wedges, wherein the steel belt slot wedges are arranged on the connecting body at intervals along the circumferential direction to form an integrated structure, and the steel belt slot wedges are plugged at the notch of the stator slot in a one-to-one correspondence manner.
2. The stator of claim 1, wherein the coupling body is connected to the same end of a plurality of the steel strip wedges.
3. The stator according to claim 1, wherein the coupling body is connected to a middle position or an arbitrary position near a middle of the plurality of steel strip wedges, and is located at a side of the steel strip wedges away from the stator core.
4. The stator according to claim 1, wherein the number of the coupling bodies is two, one of the coupling bodies is connected to one of the plurality of steel strip wedges in the length direction, and the other of the coupling bodies is connected to the other of the plurality of steel strip wedges in the length direction.
5. The stator according to claim 1, wherein the steel strip slot wedge includes a blocking portion and a positioning portion, the positioning portion is disposed on at least one side of the blocking portion in a width direction, a step groove is formed between the positioning portion and the blocking portion, the blocking portion is inserted into a slot opening of the stator slot, a tooth portion of the stator core is inserted into the step groove, and the positioning portion abuts against a tooth end face of the stator core.
6. The stator of claim 1, wherein all of the steel strip wedges are provided with through slots extending through the thickness.
7. The stator of claim 1, wherein the steel band slot wedges comprise solid steel band slot wedges and slotted steel band slot wedges, and a preset number of the solid steel band slot wedges are arranged between two adjacent slotted steel band slot wedges;
the number of solid steel strip wedges between different adjacent two of said slotted steel strip wedges may be the same or different.
8. The stator according to claim 1, characterized in that the steel strip wedge is provided with a plurality of through slots extending through the thickness direction, the plurality of through slots being arranged along the length and/or width direction of the steel strip wedge.
9. A drive motor comprising a stator as claimed in any one of claims 1 to 8.
10. An automobile comprising a drive motor according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320858892.3U CN219779883U (en) | 2023-04-17 | 2023-04-17 | Stator, driving motor and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320858892.3U CN219779883U (en) | 2023-04-17 | 2023-04-17 | Stator, driving motor and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219779883U true CN219779883U (en) | 2023-09-29 |
Family
ID=88137459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320858892.3U Active CN219779883U (en) | 2023-04-17 | 2023-04-17 | Stator, driving motor and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219779883U (en) |
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2023
- 2023-04-17 CN CN202320858892.3U patent/CN219779883U/en active Active
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