CN118232581B - Concentrated flat wire winding layout structure with high slot filling rate - Google Patents
Concentrated flat wire winding layout structure with high slot filling rate Download PDFInfo
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- CN118232581B CN118232581B CN202410661657.6A CN202410661657A CN118232581B CN 118232581 B CN118232581 B CN 118232581B CN 202410661657 A CN202410661657 A CN 202410661657A CN 118232581 B CN118232581 B CN 118232581B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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Abstract
The invention discloses a concentrated flat wire winding layout structure with high slot filling rate. The layout structure comprises a plurality of flat wire concentrated windings and a stator core, wherein each flat wire concentrated winding is sequentially arranged on each stator tooth of the stator core, the arrangement of the flat wire concentrated windings on adjacent stator teeth of the stator core is different, and the arrangement of the flat wire concentrated windings on the interval stator teeth of the stator core is the same. The invention has simple structure and fewer welding spots, and can improve the reliability of the winding and reduce the cost; the invention can separate from the stator core to independently manufacture the winding module and assemble with the stator core at last, thereby reducing the complexity of the process, being beneficial to reducing the damage risk of the paint film of the enameled wire, changing the serial working procedure into the parallel working procedure for stator production and winding production, and being beneficial to improving the production efficiency; the invention realizes high-slot full-rate arrangement of flat wire windings on the basis of parallel tooth stators, can effectively improve the utilization rate of the internal space of the motor with fewer slots, and further improves the efficiency and the power density of the motor.
Description
Technical Field
The invention relates to a winding layout structure, relates to the field of motors, and in particular relates to a concentrated flat wire winding layout structure with high slot filling rate.
Background
The flat wire has the advantages that by virtue of the square section characteristics, fewer gaps are reserved in the flat wire when the winding is wound, so that a higher slot filling rate is obtained, the power density and the efficiency of the motor are improved, and the flat wire is widely applied to large-scale motors and new energy automobile driving motors. Because the air gap area of the small and medium-sized motor is limited, the number of winding turns is generally higher to obtain higher rotor flux linkage, so that the process complexity and cost of the plug-in type flat wire are greatly increased, and the distributed flat wire winding layout design is more complicated and difficult to apply. The outer diameter of the small and medium-sized motor is smaller, the stator slot is in an obvious trapezoid, the square section characteristics of the flat wire enable the winding and layout of the stator slot to be less flexible than that of a round wire, space waste is easy to be caused in the trapezoid slot, and the advantage of high copper filling rate of the rectangular section capable of being densely paved is difficult to be exerted. How to apply flat wires in small and medium-sized motors with high efficiency and low cost to improve the motor efficiency is a problem to be solved.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a concentrated flat wire winding layout structure with high slot filling rate. The invention can solve the contradiction between the square section of the flat wire and the space utilization of the stator trapezoid groove, and realize the high groove full rate application of the flat wire in small and medium-sized motors.
The technical scheme adopted by the invention is as follows:
The high-slot-fullness concentrated flat wire winding layout structure comprises a plurality of flat wire concentrated windings and a stator core, wherein each flat wire concentrated winding is sequentially arranged on each stator tooth of the stator core, the arrangement of the flat wire concentrated windings on adjacent stator teeth of the stator core is different, and the arrangement of the flat wire concentrated windings on spaced stator teeth of the stator core is the same.
The arrangement of the flat wire concentrated windings on the adjacent stator teeth is different in the number of winding layers, the number of turns of each layer of winding and the arrangement position of each turn of winding of the flat wire concentrated windings on the adjacent stator teeth, and the arrangement of the flat wire concentrated windings on the interval stator teeth is the same in the number of winding layers, the number of turns of each layer of winding and the arrangement position of each turn of winding of the flat wire concentrated windings on the interval stator teeth; the total winding turns of the flat wire concentrated winding on each stator tooth are always the same. The purpose of this design is to increase the slot fill rate of the current concentrated winding motor and to simplify the motor machining process.
Each stator tooth and each stator slot of the stator core are alternately arranged in the circumferential direction; the stator slots are divided into wider sides and narrower sides, the wider sides of each stator slot are positioned on the inner ring or the outer ring of the stator core, and the narrower sides of each stator slot are positioned on the outer ring or the inner ring of the stator core.
The adjacent stator teeth are two stator teeth with only one stator slot between the two teeth, and each stator tooth is provided with two adjacent stator teeth; two stator slots and one stator tooth are arranged between the interval stator teeth.
The flat wire concentrated windings on the adjacent stator teeth are two types of different windings, the two types of windings are tightly arranged in the same mode at the areas, close to the stator teeth, of the two types of windings, the first type of windings are sequentially arranged from the wider end of the stator slot to the narrower end of the stator slot to the middle part of the stator slot, the second type of windings are bent when being arranged from the wider end of the stator slot to the position to be overlapped with the first type of windings on the adjacent stator teeth, and then the two types of windings are sequentially arranged in the area, close to the narrower end of the stator slot, after crossing a preset distance, the winding arrangement positions of the flat wire concentrated windings on the adjacent stator teeth are finally different in a preset specific position; overlap of space occupied by adjacent tooth windings is prevented by bending of partial windings at specific positions.
The concentrated winding components on each stator tooth are divided into two types, and the two types of windings are alternately arranged along the circumference. The two types of windings are tightly wound in the same mode in the areas, close to the teeth, of the two sides of the slot, and the arrangement modes of the two types of windings in the middle area of the slot are different: the first type of windings are sequentially arranged to the middle part of the slot from the wider end of the slot to the narrower end of the slot; when the second type of windings are arranged from the wider end of the slot to the position to be overlapped with the first type of windings of the adjacent teeth, the end parts are bent, and the second type of windings are arranged continuously in the space near the narrower end of the slot after crossing a certain distance, so that the space occupied by the first type of windings is in a convex shape, and the space occupied by the second type of windings is in a soil shape.
The stator slots of the stator core are sector slots, trapezoid slots or quadrilateral slots.
The stator core is a spliced stator, and the splicing mode is tooth splicing type, sun tooth splicing type or tooth shoe splicing type and the like.
Each stator tooth of the stator core is a parallel tooth.
The number of the stator teeth of the stator core is an even number greater than or equal to 4.
The flat wire concentrated winding is a multi-turn continuous flat wire wound on one stator tooth, the winding wire end of the flat wire concentrated winding comprises a wire outlet end and a wire inlet end, and the definition of the wire outlet end and the definition of the wire inlet end are exchangeable; the flat wire concentrated winding does not contain a bridge wire, and can be matched with any kind of bridge wire to form various motor winding connection modes.
The beneficial effects of the invention are as follows:
1. The traditional flat wire winding is usually matched with a parallel slot stator, and compared with a parallel tooth stator, the parallel slot stator has the problem that the magnetic circuit space is wasted due to the trapezoidal shape of the tooth magnetic circuit; when the stator is matched with a parallel tooth stator, the slot filling rate is not high due to the fact that the rectangular cross section of the flat wire is not matched with the trapezoidal cross section of the stator slot. The invention realizes high-slot full-rate arrangement of flat wire windings on the basis of parallel tooth stators, can effectively improve the utilization rate of the internal space of the motor with fewer slots, and further improves the efficiency and the power density of the motor.
2. Compared with the hairpin type flat wire winding, the invention has the advantages of simple structure, fewer welding spots, and capability of improving the reliability of the winding and reducing the cost.
3. The invention can separate from the stator core to independently manufacture the winding module and assemble with the stator core at last, reduces the complexity of the process, is beneficial to reducing the damage risk of the paint film of the enameled wire, changes the serial working procedure into the parallel working procedure in stator production and winding production, and is beneficial to improving the production efficiency.
Drawings
FIG. 1 is a schematic illustration of an exemplary application of the present invention to an 18-slot sun split stator;
Fig. 2 is a schematic diagram of a winding a and a winding B module structure according to the present invention, wherein fig. 2 (a) is a schematic diagram of a winding a module structure according to the present invention, and fig. 2 (B) is a schematic diagram of a winding B module structure according to the present invention;
FIG. 3 is a schematic top view of a stator according to the present invention;
FIG. 4 is a schematic cross-sectional view of a stator of the present invention;
FIG. 5 is a schematic view of a solar tooth stator assembly after all winding B modules are inserted, after winding A modules are inserted and after the insertion is completed, wherein FIG. 5 (a) is a schematic view after all winding B modules are inserted, FIG. 5 (B) is a schematic view after winding A modules are inserted, and FIG. 5 (c) is a schematic view of a solar tooth stator assembly after the insertion of winding A modules is completed;
in the figure: 1. winding A module, winding B module, 3, sun tooth stator piece, 4, yoke stator piece, 5, winding wire end, 6, winding B bending processing department.
Detailed Description
For a more detailed description of the invention, the method of application of the invention is illustrated in connection with the embodiment of the stator of the motor in the drawings. It should be apparent that the present invention is applicable to, for example, motors and other various motor configurations, and that the following description is applicable to other motors in a scalable manner.
As shown in fig. 1, an 18-slot concentrated flat wire winding motor stator according to an embodiment of the present invention mainly includes two parts, namely a stator core and a flat wire concentrated winding, wherein each flat wire concentrated winding is sequentially arranged on each stator tooth of the stator core, the arrangement of the flat wire concentrated windings on adjacent stator teeth of the stator core is different, the arrangement of the flat wire concentrated windings on spaced stator teeth of the stator core is the same, the flat wire concentrated winding is a multi-turn continuous flat wire wound on one stator tooth, a winding wire end 5 of the flat wire concentrated winding includes a wire outlet end and a wire inlet end, and the definitions of the wire outlet end and the wire inlet end are exchangeable; the concentrated winding of flat wire does not contain a crossover wire. The main components of the concentrated flat wire winding motor stator include: a sun gear stator segment 3, a yoke stator segment 4, nine winding a modules 1 and nine winding B modules 2. The stator core is in an outer stator form, a sun tooth spliced stator structure is adopted, stator teeth are parallel teeth with right-angle roots, each stator tooth and each stator groove of the stator core are alternately arranged in the circumferential direction, the groove shape of each stator groove is approximately a quadrangle formed by splicing two identical right-angle triangles in a mirror symmetry mode in a bevel edge-to-edge mode, the stator grooves are divided into wider sides and narrower sides, the near-notch end is a narrower end, the near-groove bottom end is a wider end, the wider sides of each stator groove are all positioned on the outer ring of the stator core, and the narrower sides of each stator groove are positioned on the inner ring of the stator core. The solar tooth spliced stator structure divides a complete stator into a solar tooth stator splicing block 3 and a yoke part stator splicing block 4, stator teeth and the yoke part are divided into a plurality of silicon steel sheets, and one silicon steel sheet which is designed at a notch tooth shoe and is connected with an adjacent stator tooth shoe is arranged, so that the stator teeth are connected into a whole without affecting the electromagnetic structure design of a motor, the solar tooth stator splicing block 3 is formed, as shown in fig. 3, and the rest stator iron cores form the yoke part stator splicing block 4, as shown in fig. 4.
The arrangement of the flat wire concentrated windings on the adjacent stator teeth is different in the number of winding layers, the number of turns of each layer of winding and the arrangement position of each turn of winding of the flat wire concentrated windings on the adjacent stator teeth, and the arrangement of the flat wire concentrated windings on the interval stator teeth is the same in the number of winding layers, the number of turns of each layer of winding and the arrangement position of each turn of winding of the flat wire concentrated windings on the interval stator teeth; the total winding turns of the flat wire concentrated winding on each stator tooth are always the same. The adjacent stator teeth are two stator teeth with only one stator slot between the two teeth, and each stator tooth is provided with two adjacent stator teeth; two stator slots and one stator tooth are arranged between the interval stator teeth.
In the invention, the concentrated winding layout of the flat wire takes windings on two adjacent stator teeth as a basic unit, and the windings on the two teeth are marked as a winding A module 1 and a winding B module 2. The arrangement modes of the winding A module 1 and the winding B module 2 are different, and the winding A module and the winding B module are matched with each other according to the groove type. The winding A modules 1 and the winding B modules 2 are alternately arranged on stator teeth which are sequentially arranged along the circumference of the stator, and for a motor stator with Z stator teeth, the windings of the motor stator have Z/2 winding A modules 1 and Z/2 winding B modules 2 which are arranged at intervals, namely Z/2 winding units which are sequentially arranged. As shown in fig. 4, in the embodiment of the present invention, the stator teeth are numbered 1 to 18 in the circumferential order of the stator, the stator teeth of the numbers 1,3,5, 7, 9, 11, 13, 15, 17 are arranged to form a winding a module 1, and the stator teeth of the numbers 2,4,6, 8, 10, 12, 14, 16, 18 are arranged to form a winding B module 2, so that the winding a module 1 and the winding B module 2 are arranged at intervals along the circumference of the stator.
The flat wire windings are closely wound along the edges of the stator teeth, one layer of winding closest to the stator teeth is a layer 1 winding, and the layers of windings stacked on the periphery are a layer 2 and a layer 3 in sequence. When the flat wire windings are closely arranged and each layer of turns is fully arranged, the section of the winding distribution area along the axial direction of the motor is rectangular, the long side of the rectangle is parallel to the edge of the stator teeth, and the short side of the rectangle is parallel to the bottom of the half slot area to which the rectangle belongs. When the number of winding layers is increased to just ensure that the areas occupied by adjacent tooth windings are not overlapped and the number of turns of each layer is full, the rectangular area occupied by the partial windings is called an area a, the remaining area in the slot is called an area b, namely, after the reserved space required by the insulation and production process in the slot is determined, the area a and the remaining area b which are not overlapped by the adjacent tooth windings are divided in the slot space of the motor. Region a is a rectangular region immediately adjacent to the edge of the stator teeth and the edge of the slot bottom, and region b is a quadrangular region after the region a is removed from the slot. In the embodiment of the invention, after the areas of the area a and the area b are evaluated, 2 layers of windings are arranged in the area a, 1 layer of windings is arranged in the area b, 15 turns of windings are arranged on each of the 1 st layer and the 2 nd layer, and 8 turns of windings are arranged on the 3 rd layer.
In the region a, the arrangement modes of the winding A module 1 and the winding B module 2 are the same, and in the region B, the arrangement modes of the winding A module 1 and the winding B module 2 are different; in the region a, the winding A module 1 and the winding B module 2 are closely arranged parallel to the tooth part, and each layer of winding turns are fully arranged; in the region b, the winding A modules 1 are arranged in a compact manner from the wider end of the slot to the narrower end of the slot, when the winding arrangement approaches to the left and right positions of the middle part of the slot, the winding arrangement direction is turned back, the winding arrangement of the higher layer is carried out, the number of turns wound on the layer is recorded as the number of turns x, and the number of turns of the winding arrangement of the subsequent layer is not more than x. The distribution area of the winding A modules 1 in the area b is a rectangular area which is closely attached to the narrow end of the slot and the area a, and the area b is approximately divided into two parts, namely an area near the wide end of the slot and an area near the narrow end of the slot. In region B, winding B modules 2 are arranged in a close manner starting from the slot bottom in the direction of the narrower end of the slot until their winding arrangement region is about to overlap the region occupied by winding a modules 1, and this layer is wound with a number of turns y. At this time, bending the flat wire of the winding B module 2 at the end part to serve as a winding B bending part 6, so that the y+1th turn coil winding position of the winding B module 2 moves to the narrower end of the slot by a preset distance, the rectangular area occupied by the winding A module 1 is skipped, and the winding of the residual turns is continued in the spare area at the narrower end of the slot. The winding B module 2 occupies two rectangular areas within the area B.
In the practice of the invention, the number of turns x and the number of turns y are values selected based on the dimensions of the flat wire and the dimensions of the stator slot, with selected criteria including, but not limited to: the total turns of the winding A module 1 and the winding B module 2 are equal, the occupied areas of the winding A module 1 and the winding B module 2 are not interfered, the positions of the winding wire inlet end and the winding wire outlet end are adjusted, an insulating space is reserved in a groove, and a cooling structure space is reserved in the groove.
When the flat wire size is properly matched with the slot size, the y-th turn of the winding B module 2 in the region B is not bent, and the region occupied by the winding A module 1 can be avoided, and at this moment, the difference between the winding A module 1 and the winding B module 2 is represented by the difference between the number of winding layers and the number of turns of each layer in the region B, and the difference is regarded as a special case of the bending layout of the y-th turn of the winding B module 2 in the region B, and at this moment, y is equal to the number of turns of the winding of the layer.
As shown in fig. 4, in order to determine the arrangement of windings in the slot according to the embodiment of the present invention, the number of winding turns is determined according to the electromagnetic design scheme of the motor, and then the cross-sectional plane dimension of the flat wire is determined according to the slot dimension and the load condition of the motor. The winding turns determined by the electromagnetic design scheme of the motor in the embodiment of the invention are 38 turns, the number of conductors in the slot is 76, and the area of the slot is 358mm, so that the cross-section plane dimension of the flat wire is determined to be 1mm in length of a short side and 2.4mm in length of a long side.
In the specific implementation, the 1 st layer of windings of the winding A module 1 and the winding B module 2 are closely distributed from the bottom to the notch along the edge of the stator teeth, the 2 nd layer of windings are transferred from the end part to the outer side of the first layer of windings, and are closely distributed from the notch to the bottom along the outer edge of the first layer of windings; and the 3 rd layer windings of the winding A module 1 are arranged from the bottom of the groove to the notch along the outer edge of the 2 nd layer windings, and x is taken as 8, so that the winding A module 1 in the region b only has 1 layer of windings, and the number of turns is 8. The third layer winding of the winding B module 2 is arranged from the bottom of the groove to the notch along the outer edge of the winding of the layer 2, y is 5, the winding is bent at the end part when the winding is the 5 th turn, the winding spans the tightly arranged distance of 4 turns of the winding towards the notch direction, the rest 3 turns are continuously wound in the rest area of the area B, which is close to the notch, and the winding is led out as an outlet end after the winding is completed. The first turn of the first layer winding starts from a wire inlet end, and a wire inlet groove is arranged at the position, close to the tooth root, of the stator yoke part for placing the winding wire. And (3) fine-adjusting the arrangement positions of the windings of each layer according to the space requirements of the winding inlet end, the winding outlet end and the crossing end from the lower layer to the higher layer, after confirming the arrangement of the windings, respectively winding 9 windings A modules 1 and winding B modules 2, and combining independent concentrated windings with slot insulation assemblies to prepare a winding A module 1 and a winding B module 2 as shown in (a) of fig. 2 and (B) of fig. 2.
All 9 winding B module 2 modules are inserted into even numbered teeth of the solar tooth stator segment 3 at intervals as shown in fig. 5 (a), then inter-layer insulation of windings in the slots is arranged, and then all 9 winding a module 1 modules are inserted into the rest teeth of the solar tooth stator segment 3 as shown in fig. 5 (B), and the assembled solar tooth stator segment 3 and winding module are shown in fig. 5 (c). The yoke stator segment 4 is sleeved outside the sun gear stator segment 3, the bottom of the groove is insulated, and the sun gear stator segment 3 and the yoke stator segment 4 are fixedly spliced with each other to form a complete stator, as shown in fig. 1.
The winding A module 1 occupies a convex-shaped area, and the winding B module 2 occupies a soil-shaped area, which are alternately arranged along the circumference of the stator when seen from the perspective of the axial section of the whole stator. The layout is matched with the spliced stator structure, so that the manufacturing and assembling process of the flat wire concentrated winding can be simplified. When the stator adopts a sun gear splicing structure, the winding A module 1 and the winding B module 2 can be wound on a die before splicing and then are inserted on the stator teeth. During the insertion, the 'soil' -shaped winding B module 2 is firstly installed, and the 'convex' -shaped winding A module 1 is installed, so that shielding or interference between windings can not occur. And after the winding is inserted, splicing the sun gear stator splicing block 3 and the yoke stator splicing block 4 into a complete stator. When the stator adopts a spliced tooth structure, the winding can be directly wound on the teeth.
The winding A module 1 and the winding B module 2 only describe the partial structure of the exciting winding, and do not limit the arrangement structure of the bridge wire, and the positions of the winding wire inlet end and the winding wire outlet end can be selected to be near the groove bottom side or near the groove opening side according to the arrangement condition of the winding in the groove. When the winding wire inlet ends are arranged near the bottom side of the slot, the wire inlet slot is designed according to the situation.
Finally, connecting the wire inlet end and the wire outlet end of each winding according to the requirement, and arranging the bridge wire and the outgoing wire to form a complete motor winding. Taking an 18-slot 20-pole motor as an example, the motor winding is adopted as a three-phase star connection, and the number of parallel branches is 1. The lead-in wire of the tooth number 1 winding is used as a lead-out wire of the A-phase winding, the lead-out wire of the tooth number 1 winding is connected with the lead-out wire of the tooth number 2 winding, the lead-in wire of the tooth number 2 winding is connected with the lead-in wire of the tooth number 3 winding, the lead-out wire of the tooth number 3 winding is connected with the lead-in wire of the tooth number 10 winding, the lead-out wire of the 10 winding is connected with the lead-out wire of the tooth number 11 winding, the lead-in wire of the tooth number 11 is connected with the lead-in wire of the tooth number 12 winding, and the lead-out wire of the tooth number 12 winding is connected to a neutral point of the three-phase winding star connection. The phase A windings pass through the modules 1,2, 3, 10, 11 and 12 of the 3 winding A modules 1 and the 3 winding B modules 2. Taking the wire inlet end of the tooth number 16 as a lead-out wire of a B-phase winding, and connecting concentrated windings of the tooth numbers 16, 17, 18, 7, 8 and 9 in a similar way to form a B-phase winding; and taking the tooth number 4 as an outgoing line of the C-phase winding, and connecting concentrated windings of the tooth numbers 4, 5, 6, 13, 14 and 15 in a similar manner to form the C-phase winding.
The winding layout is suitable for all three-phase single-branch concentrated winding motors with the number of teeth being greater than or equal to 4 and even. For a three-phase motor with even numbers of teeth, the winding A module 1 and the winding B module 2 are necessarily connected in series with the same number in the same branch, so that the electric parameters of each phase winding are not asymmetric due to different arrangements of the winding A module 1 and the winding B module 2. For the case of multiple branches in parallel, a classification discussion is required.
The concentrated flat wire winding layout structure adopted by the invention can solve the contradiction between the square section of the flat wire and the space utilization of the stator trapezoid slot, realizes the high slot full rate application of the flat wire in a medium-and small-sized motor, and has stronger practicability and application prospect.
Claims (6)
1. A concentrated flat wire winding layout structure with high slot fullness rate is characterized in that: the stator comprises a plurality of flat wire concentrated windings and a stator core, wherein each flat wire concentrated winding is sequentially arranged on each stator tooth of the stator core, the arrangement of the flat wire concentrated windings on adjacent stator teeth of the stator core is different, and the arrangement of the flat wire concentrated windings on the interval stator teeth of the stator core is the same;
The arrangement of the flat wire concentrated windings on the adjacent stator teeth is different, namely the number of winding layers, the number of turns of each layer of winding and the arrangement position of each turn of winding of the flat wire concentrated windings on the adjacent stator teeth are different, and the arrangement of the flat wire concentrated windings on the interval stator teeth is the same, namely the number of winding layers, the number of turns of each layer of winding and the arrangement position of each turn of winding of the flat wire concentrated windings on the interval stator teeth are the same;
Each stator tooth and each stator slot of the stator core are alternately arranged in the circumferential direction; the stator slots are divided into wider sides and narrower sides, the wider sides of each stator slot are positioned on the inner ring or the outer ring of the stator core, and the narrower sides of each stator slot are positioned on the outer ring or the inner ring of the stator core;
the flat wire concentrated windings on the adjacent stator teeth are two types of different windings, the two types of windings are tightly arranged in the same mode at the areas, close to the stator teeth, of the two types of windings, the first type of windings are sequentially arranged from the wider end of the stator slot to the narrower end of the stator slot to the middle of the stator slot, the second type of windings are bent from the wider end of the stator slot to the position, to be overlapped with the first type of windings on the adjacent stator teeth, and then are sequentially arranged in the area, close to the narrower end of the stator slot, after crossing a preset distance, of the end parts of the current turn windings, and finally, the winding arrangement positions of the preset specific positions of one of the flat wire concentrated windings on the adjacent stator teeth are different.
2. The concentrated flat wire winding arrangement of high slot fill ratio of claim 1, wherein: the stator slots of the stator core are sector slots, trapezoid slots or quadrilateral slots.
3. The concentrated flat wire winding arrangement of high slot fill ratio of claim 1, wherein: the stator core is a spliced stator, and the splicing mode is tooth splicing type, sun tooth splicing type or tooth shoe splicing type.
4. The concentrated flat wire winding arrangement of high slot fill ratio of claim 1, wherein: each stator tooth of the stator core is a parallel tooth.
5. The concentrated flat wire winding arrangement of high slot fill ratio of claim 1, wherein: the number of the stator teeth of the stator core is an even number greater than or equal to 4.
6. The concentrated flat wire winding arrangement of high slot fill ratio of claim 1, wherein: the flat wire concentrated winding is a multi-turn continuous flat wire wound on one stator tooth, the winding wire end of the flat wire concentrated winding comprises a wire outlet end and a wire inlet end, and the flat wire concentrated winding does not comprise a bridge wire.
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| CN202410661657.6A CN118232581B (en) | 2024-05-27 | 2024-05-27 | Concentrated flat wire winding layout structure with high slot filling rate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108599410A (en) * | 2018-08-15 | 2018-09-28 | 广东美的智能科技有限公司 | Stator piece unit, Stator and electrical machine |
| CN115514117A (en) * | 2022-10-27 | 2022-12-23 | 苏州盛亿电机有限公司 | High-slot-fullness segmented stator of flat wire winding and assembling method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003009480A (en) * | 2001-06-25 | 2003-01-10 | Asmo Co Ltd | Method for winding straight-angle wire |
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| CN113224864B (en) * | 2021-05-10 | 2025-01-10 | 信质集团股份有限公司 | A stator including concentrated windings of a motor and a winding method thereof |
| EP4429077A4 (en) * | 2021-12-03 | 2025-04-16 | Welling Wuhu Motor Mfg Co Ltd | STATOR STRUCTURE, MOTOR AND ELECTRICAL EQUIPMENT |
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| CN108599410A (en) * | 2018-08-15 | 2018-09-28 | 广东美的智能科技有限公司 | Stator piece unit, Stator and electrical machine |
| CN115514117A (en) * | 2022-10-27 | 2022-12-23 | 苏州盛亿电机有限公司 | High-slot-fullness segmented stator of flat wire winding and assembling method thereof |
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| CN118232581A (en) | 2024-06-21 |
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