Motor stator and motor
By designing a motor stator in a new energy vehicle motor, changing the span number of flat wire conductors and the arrangement of stator windings, the special-shaped coils and noise problems in existing motors are solved, and performance improvement and cost reduction are achieved.
Patent Information
- Application Number
- CN202420586314.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-03-25
AI Technical Summary
There are special-shaped coils in existing new energy vehicle motors, which increase manufacturing difficulty and production cost, and is also very noisy.
A motor stator is designed to adjust the motor performance by changing the number of spans of one layer of the flat wire conductor, and weaken the specific higher harmonics through the special arrangement of the stator windings.
It realizes noise reduction, optimizes NVH effect, simplifies the production process, reduces production costs, and improves the overall performance of the motor.
Smart Images
Figure CN222915733U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, in particular to a motor stator and a motor. Background Art
[0002] It is pointed out in the related art that with the continuous increase of the promotion intensity of new energy vehicles in China, pure electric vehicles with green and environmental protection characteristics have become an inevitable trend in the future development of the automotive industry, and they will gradually replace traditional fuel buses as the daily travel means for ordinary people. In recent years, the improvement of various performances of new energy vehicles has always been the focus of attention in the industry.
[0003] At present, more and more domestic new energy vehicle industries adopt flat wire motors. The winding arrangement and connection method of flat wire motors are one of the difficulties in the design of this kind of motor. The existing coil arrangement methods generally have more special-shaped coils. The existence of special-shaped coils will increase the manufacturing difficulty of coils and is not conducive to mass production. Summary of the Utility Model
[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, the utility model provides a motor stator, which can eliminate specific high-order harmonics and reduce noise.
[0005] The utility model also provides a motor with the above-mentioned motor stator.
[0006] The motor stator according to the first aspect of the utility model includes: a stator core, on the circumference of which a plurality of stator slots are formed; a stator winding, which includes a plurality of flat wire conductors. Each flat wire conductor includes a crown part and lead-out parts connected to both ends of the crown part. Each lead-out part includes a welding end, and the welding ends of each flat wire conductor are respectively inserted into different stator slots, and the span between the welding ends is L1 = 4 and / or L2 = 5 and / or L3 = 6.
[0007] According to the motor stator of the utility model, by changing the number of spans of one layer of the flat wire conductor, reducing or increasing the number of spans, the purpose of adjusting the motor performance can be achieved, and at the same time, the existing production line can be shared to the greatest extent, which has great practicability, realizes the elimination of specific high-order harmonics, optimizes the NVH effect, and reduces the production cost.
[0008] In some embodiments, the stator winding includes a plurality of branches. The plurality of flat wire conductors in each branch are connected end to end, and in each branch, there is any place where the lead-out part of a flat wire conductor is not connected to the other lead-out part corresponding to its welding end. The unconnected lead-out parts are respectively the starting point and the ending point of the branch.
[0009] In some embodiments, the two lead-out portions are twisted in opposite directions in the circumferential direction.
[0010] In some embodiments, the motor stator includes six slot layers, which are a, b, c, d, e, and f respectively. The winding routes of the stator winding include three, which are the first route, the second route, and the third route.
[0011] Further, the winding route of the first route is: 26b → 38c → 49d → 61e → 62f → 1f → 38d → 50e → 15b → 27c → 3a → 16a → 28b → 40c → 51d → 63e → 64f → 3f → 40d → 52e → 17b → 29c → 5a → 17a → 29b → 41c → 52d → 64e → 63f → 4f → 39d → 51e → 16b → 28c → 4a → 15a → 27b → 39c → 50d → 62e → 2f → 61f → 37d → 49e → 14b → 26c → 2a → 14a.
[0012] In other embodiments, the winding routes of the second route and the third route are offset by one stator slot in the circumferential direction of the stator core from the winding route of the first route.
[0013] Further, the winding route of the first route is: 24b → 36c → 49d → 61e → 62f → 1f → 38d → 50e → 13b → 25c → 1a → 14a → 26b → 38c → 51d → 63e → 64f → 3f → 40d → 52e → 15b → 27c → 3a → 15a → 27b → 39c → 52d → 64e → 63f → 4f → 39d → 51e → 14b → 26c → 2a → 13a → 25b → 37c → 50d → 62e → 61f → 2f → 37d → 49e → 12b → 24c → 72a → 12a.
[0014] In some embodiments, the winding routes of the second route and the third route are offset by one stator slot in the circumferential direction of the stator core from the winding route of the first route.
[0015] In some embodiments, the flat wire conductor includes: a crown portion, which is formed with a protruding section; two lead-out portions, which are respectively connected to both ends of the crown portion and inserted into the stator slots, and one end of each lead-out portion away from the crown portion is formed as a welding end.
[0016] The motor according to the second aspect of the present invention includes the motor stator according to the first aspect of the present invention above.
[0017] According to the motor of the present utility model, by providing the motor stator of the above first aspect, the overall performance of the motor is improved, and the production cost and production difficulty of the motor are reduced.
[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a winding schematic diagram of a motor stator according to an embodiment of the present utility model;
[0020] Figure 2 is a winding schematic diagram of a motor stator according to another embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.
[0022] Reference will be made below to Figure 1 and Figure 2 to describe a motor stator according to an embodiment of the first aspect of the present utility model.
[0023] As Figure 1 and Figure 2 shown, a motor stator according to an embodiment of the first aspect of the present utility model includes: a stator core and a stator winding.
[0024] Specifically, a plurality of stator slots are formed in the circumferential direction of the stator core. The stator winding includes a plurality of flat wire conductors. Each flat wire conductor includes a crown portion and lead-out portions connected to both ends of the crown portion. Each lead-out portion includes a welding end. The welding ends of each flat wire conductor are respectively inserted into different stator slots, and the span between the welding ends is L1 = 4 and / or L2 = 5 and / or L3 = 6.
[0025] According to the motor stator of the embodiment of the present utility model, by changing the number of spans of one of the flat wire conductors, reducing or increasing the number of spans, the purpose of adjusting the motor performance is achieved, and at the same time, the existing production line can be shared to the greatest extent, which has great practicability, realizes the attenuation of specific high-order harmonics, optimizes the NVH effect, and reduces the production cost.
[0026] In some embodiments of the present utility model, the stator winding includes multiple branches. The multiple flat wire conductors in each branch are connected end to end, and in each branch, there is any lead-out portion of the flat wire conductor that is not connected to the other lead-out portion corresponding to its welding end. The unconnected lead-out portions are respectively the starting point and the ending point of the corresponding branch. Thus, the connection method of the stator winding is simple.
[0027] Further, the two lead-out portions are twisted in opposite directions in the circumferential direction.
[0028] In some embodiments of the present utility model, the motor stator includes six slot layers, which are respectively a, b, c, d, e, f. The winding routes of the stator winding include three, which are the first route, the second route, and the third route. Specifically, as Figure 1 shown, the winding route of the first route is: 26b → 38c → 49d → 61e → 62f → 1f → 38d → 50e → 15b → 27c → 3a → 16a → 28b → 40c → 51d → 63e → 64f → 3f → 40d → 52e → 17b → 29c → 5a → 17a → 29b → 41c → 52d → 64e → 63f → 4f → 39d → 51e → 16b → 28c → 4a → 15a → 27b → 39c → 50d → 62e → 2f → 61f → 37d → 49e → 14b → 26c → 2a → 14a.
[0029] Further, the winding routes of the second route and the third route differ from the winding route of the first route by one stator slot in the circumferential direction of the stator core. Specifically, as Figure 1 shown, the winding route of the second route is: 25d → 37e → 38f → 49f → 14d → 26e → 63b → 3c → 51a → 64a → 4b → 16c → 27d → 39e → 40f → 51f → 16d → 28e → 65b → 5c → 53a → 65a → 5b → 17c → 28d → 40e → 39f → 52f → 15d → 27e → 64b → 4c → 52a → 63a → 3b → 15c → 26d → 38e → 37f → 50f → 13d → 25e → 62b → 2c → 50a → 62a → 2b → 14c. The winding route of the third route is: 25f → 14f → 62d → 2e → 39b → 51c → 27a → 40a → 52b → 64c → 3d → 15e → 16f → 27f → 64d → 4e → 41b → 53c → 29a → 41a → 53b → 65c → 4d → 16e → 15f → 28f → 63d → 3e → 40b → 52c → 28a → 39a → 51b → 63c → 2d → 14e → 13f → 26f → 61d → 1e → 38b → 50c → 26a → 38a → 50b → 62c → 1d → 13e.
[0030] In some other embodiments of the present utility model, the motor stator includes six slot layers, namely a, b, c, d, e, and f, and the winding routes of the stator winding include three, namely the first route, the second route, and the third route. As Figure 2 shown, the winding route of the first route is: 24b → 36c → 49d → 61e → 62f → 1f → 38d → 50e → 13b → 25c → 1a → 14a → 26b → 38c → 51d → 63e → 64f → 3f → 40d → 52e → 15b → 27c → 3a → 15a → 27b → 39c → 52d → 64e → 63f → 4f → 39d → 51e → 14b → 26c → 2a → 13a → 25b → 37c → 50d → 62e → 61f → 2f → 37d → 49e → 12b → 24c → 72a → 12a.
[0031] Furthermore, the winding routes of the second route and the third route are offset by one stator slot in the circumferential direction of the stator core from the winding route of the first route. Specifically, as Figure 2 shown, the winding route of the second route is: 25d → 37e → 38f → 49f → 14d → 26e → 61b → 1c → 49a → 52a → 2b → 14c → 27d → 39e → 40f → 51f → 16d → 28e → 63b → 3c → 51a → 63a → 3b → 15c → 28d → 40e → 39f → 52f → 15d → 27e → 62b → 2c → 50a → 61a → 1b → 13c → 26d → 38e → 37f → 50f → 13d → 25e → 60b → 72c → 48a → 60a → 72b → 12c. The winding route of the third route is: 25f → 14f → 2e → 62d → 37b → 49c → 25a → 38a → 50b → 62c → 3d → 15e → 16f → 27f → 64d → 4e → 39b → 51c → 27a → 39a → 51b → 63c → 4d → 16e → 15f → 28f → 63d → 3e → 38b → 50c → 26a → 37a → 49b → 61c → 2d → 14e → 13f → 26f → 61d → 1e → 36b → 48c → 24a → 36a → 48b → 60c → 1d → 13e.
[0032] In still some other embodiments, in order to weaken specific high-order harmonics, the winding routes of the second route and the third route can also be offset by two stator slots in the circumferential direction of the stator core from the winding route of the first route.
[0033] In some embodiments of the present utility model, the flat wire conductor includes: a crown portion, where a protruding section is formed; and two lead-out portions, which are respectively connected to both ends of the crown portion and inserted into the stator slots, and one end of each lead-out portion away from the crown portion is formed as a welding end. Thus, the structure of the flat wire conductor is simple, reducing the production difficulty and production cost.
[0034] The motor according to the second aspect embodiment of the present utility model includes the motor stator according to the first aspect embodiment of the present utility model described above.
[0035] By providing the motor stator according to the first aspect embodiment of the present utility model, the overall performance of the motor is improved, and the production cost and production difficulty of the motor are reduced.
[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the 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. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.
[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.
[0038] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0039] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0040] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.
Claims
1. A motor stator, characterized in that: include: A stator core, wherein a plurality of stator slots are formed in a circumferential direction of the stator core, The stator winding comprises a plurality of flat wire conductors, each of which comprises a crown portion and lead portions connected to both ends of the crown portion, each of which comprises a welding end, and the welding end of each of the flat wire conductors is respectively inserted into different stator slots, and the span between the welding ends is L1=4 and / or L2=5 and / or L3=6.
2. The motor stator according to claim 1, characterized in that: The stator winding includes multiple branches, and the multiple flat wire conductors in each branch are connected end to end, and each branch has a lead-out portion of the flat wire conductor at any one point that is not connected to another lead-out portion corresponding to its welding end, and the unconnected lead-out portions are respectively the starting point and the end point of the branch.
3. The motor stator according to claim 2, characterized in that: The two lead-out portions are twisted in opposite directions in the circumferential direction.
4. The motor stator according to claim 3, characterized in that: The motor stator includes six slot layers, which are a, b, c, d, e, and f respectively. The stator winding includes three winding routes, which are a first route, a second route, and a third route.
5. The motor stator according to claim 4, characterized in that: The winding route of the first path is: 26b→38c→49d→61e→62f→1f→38d→50e→15b→27c→3a→16a→28b→40c→51d→63e→64f→3f→40d→52e→17b→29c→5a→17a→29b→41c→52d→64e→63f→4f→39d→51e→16b→28c→4a→15a→27b→39c→50d→62e→2f→61f→37d→49e→14b→26c→2a→14a.
6. The motor stator according to claim 5, characterized in that: The winding paths of the second path and the third path differ from the winding path of the first path by one stator slot in the circumferential direction of the stator core.
7. The motor stator according to claim 4, characterized in that: The winding route of the first path is: 24b→36c→49d→61e→62f→1f→38d→50e→13b→25c→1a→14a→26b→38c→51d→63e→64f→3f→40d→52e→15b→27c→3a→15a→27b→39c→52d→64e→63f→4f→39d→51e→14b→26c→2a→13a→25b→37c→50d→62e→61f→2f→37d→49e→12b→24c→72a→12a.
8. The motor stator according to claim 7, characterized in that: The winding paths of the second path and the third path differ from the winding path of the first path by one stator slot in the circumferential direction of the stator core.
9. The motor stator according to any one of claims 1 to 8, characterized in that: The flat wire conductor comprises: a crown portion, the crown portion being formed with a convex section; Two lead-out parts are respectively connected to two ends of the crown part and inserted into the stator slot, and one end of each lead-out part away from the crown part is formed as a welding end.
10. A motor, characterized in that: The invention comprises the motor stator according to any one of claims 1 to 9.