CN109274189A - Stator winding structure of axial flux machine - Google Patents
Stator winding structure of axial flux machine Download PDFInfo
- Publication number
- CN109274189A CN109274189A CN201811479330.8A CN201811479330A CN109274189A CN 109274189 A CN109274189 A CN 109274189A CN 201811479330 A CN201811479330 A CN 201811479330A CN 109274189 A CN109274189 A CN 109274189A
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- stator
- winding
- phase
- coil
- straight line
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- 238000004804 winding Methods 0.000 title claims abstract description 113
- 230000004907 flux Effects 0.000 title abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 32
- 238000007493 shaping process Methods 0.000 description 11
- 239000004020 conductor Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- 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
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
Abstract
本发明提供了一种轴向磁通电机的定子绕组结构，包括具有多个定子槽的定子铁芯和在所述定子铁芯上绕制的三相绕组，每相所述绕组的内侧端部和/或外侧端部向所述定子铁芯的轭部弯折，以使所述三相绕组的内侧端和/或外侧端折叠于所述轭部。可控制线圈嵌线后定子内外径的尺寸，更加合理的利用空间进行线圈排布，使得绕组端部伸出长度大大减小。进一步地，通过改进绕组的连接方式，使绕组端部折叠和整形更加容易实现。The present invention provides a stator winding structure of an axial flux machine comprising a stator core having a plurality of stator slots and a three-phase winding wound on the stator core, the inner end of each of the windings of each phase And/or the outer end portion is bent toward the yoke portion of the stator core such that the inner end and/or the outer end of the three-phase winding are folded over the yoke. The size of the inner and outer diameters of the stator after the coil is embedded can be controlled, and the coil arrangement can be more rationally utilized, so that the extension length of the winding end is greatly reduced. Further, by improving the connection of the windings, it is easier to fold and shape the winding ends.
Description
Technical field
The present invention relates to electric machine structure fields, more particularly to a kind of stator winding structure of axial-flux electric machine.
Background technique
Existing axial-flux electric machine is also known as disc type electric machine, and stator slot is uniform along discoid stator core radial direction radial
Arrangement, stator slot extend radially through iron core.Inventors have found that in traditional technology, according to a set pattern after the completion of stator coil winding
Rule is embedded into stator slot, and after the completion of embedding, overhang is stretched out to radial direction, spatially makes the outer of entire stator
Diameter becomes large-sized, internal diameter becomes smaller.Wherein, outer diameter becomes larger meeting so that motor case size must be increase accordingly to fill
Lower stator；Internal diameter, which becomes smaller, is possible to influence the installation of motor shaft, even will appear coil at diameter of stator bore under extreme case
The case where interfering.
Summary of the invention
It is an object of the invention to overcome at least one defect of existing axial-flux electric machine, a kind of axial magnetic energization is provided
The stator winding structure of machine can control the size of stator internal-and external diameter after coil embedding, is more reasonably utilized space and carries out line
Circle arrangement, so that winding overhang extension elongation greatly reduces.
The invention proposes a kind of stator winding structures of axial-flux electric machine thus, including determining with multiple stator slots
Sub- iron core and on the stator core coiling three-phase windings, wherein the medial end and/or outboard end of winding described in every phase
Portion is bent to the yoke portion of the stator core, so that the inner end of the three-phase windings and/or outboard end are folded to the yoke portion.
Optionally, two straight line portions of each coil of winding described in every phase are located at same in two stator slots
Layer.
Optionally, the straight line portion installed in each stator slot is the straight line portion of winding described in same phase.
Optionally, winding described in every phase has multiple coil layers；
Each coil layer has multiple coils, and the straight line portion of multiple coils is in the stator slot
In same layer；
The straight line portion of coil layer described in any two is in different layers in the stator slot.
Optionally, series, parallel or mixed connection between multiple coil layers of winding described in every phase.
Optionally, in coil layer described in the adjacent two layers of the winding described in every phase, all overhangs are along institute
The circumferential direction for stating stator core is set gradually.
Optionally, the quantity of the stator slot between two straight line portions of each coil is 2.
Optionally, multiple coil series connection in each coil layer.
The stator winding structure of axial-flux electric machine of the invention can control the ruler of stator internal-and external diameter after coil embedding
It is very little, it is more reasonably utilized space and carries out coil configuration, so that winding overhang extension elongation greatly reduces.Further, pass through
The connection type for improving winding folds winding overhang and is easier to realize with shaping.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic diagram of the stator winding structure of axial-flux electric machine according to an embodiment of the invention；
Fig. 2 to Fig. 4 is the schematic of each phase winding such as A, B, C in the stator winding structure of existing axial-flux electric machine respectively
Structure chart；
Fig. 5 to Fig. 7 is the schematic of each phase winding such as A, B, C in the stator winding structure of existing axial-flux electric machine respectively
Structure chart；
Fig. 8 to Figure 10 be respectively A, B in the stator winding structure of axial-flux electric machine according to an embodiment of the invention,
The schematic diagram of each phase winding such as C；
Figure 11 to Figure 14 is respectively each in the stator winding structure of axial-flux electric machine according to an embodiment of the invention
The schematic circuit of phase winding；
Figure 15 is the schematic diagram according to the stator winding structure of the axial-flux electric machine of one embodiment of the invention.
Specific embodiment
Fig. 1 is showing for the stator winding structure stator winding structure of axial-flux electric machine according to an embodiment of the invention
Meaning property structure chart.As shown in Figure 1 and referring to figs. 2 to Figure 15, the embodiment of the invention provides a kind of stators of axial-flux electric machine
Winding construction.Stator winding structure include have the stator core 20 of multiple stator slots 21 and on stator core 20 coiling three
Phase winding.Particularly, the medial end 33 of every phase winding and/or outboard end 32 are bent to the yoke portion of stator core 20, so that
The inner end of three-phase windings and/or outboard end are folded to yoke portion.Preferably, the medial end of every phase winding and outboard end to
The yoke portion of stator core 20 is bent, so that the inner end of three-phase windings and/or outboard end are folded to yoke portion.
After coil insertion, the end of winding is folded to the yoke portion of stator core 20, and auxiliary shaping makes folded winding
End is tightly attached in the yoke portion of stator core, finally makes the control of stator inside/outside diameter size variable quantity in very a small range, and stator is empty
Between be laid out it is more compact.Folding shaping is carried out to the end of winding, can control the size of stator internal-and external diameter after coil embedding, more
Add reasonable utilization space to carry out coil configuration, so that winding overhang extension elongation greatly reduces, and then axial magnetic flux can be reduced
The volume of motor, it is compact-sized.
In some embodiments of the invention, it is offline by electrical schematic diagram rule when three-phase motor stator embeds the wire.Traditionally
Winding is arranged in stator slot 21 by single or double layer, when single layer is arranged, as shown in Figures 2 to 4, two straight line portions 31 of coil
It is located in different stator slots 21；When bilayer arrangement, as shown in Figures 5 to 7, two straight line portions 31 of coil are located at
The upper and lower in different stator slots 21, and the upper layer of referred to as coil while and when lower layer.
In the embodiment of the present invention, it is more easier to fold end turn with shaping, improves the connection type of winding.
Specifically, as shown in Figures 8 to 10, two straight line portions 31 of each coil of every phase winding are located at same in two stator slots 21
Layer, folding convenient, i.e. convenient processing and manufacture are at low cost, that is to say, that by improving the connection type of winding, make winding overhang
It folds and shaping is easier to realize.Further, the straight line portion 31 installed in each stator slot 21 is the straight of same phase winding
Line portion 31.The number of stator slot 21 shared by every phase winding is not overlapped with other phases.Certainly, structure shown in Fig. 2 to Fig. 7 can also be to winding
End folded.
In some embodiments of the invention, every phase winding has multiple coil layers.Each coil layer has multiple coils,
And the straight line portion 31 of multiple coils is in same layer in stator slot 21.The straight line portion 31 of any two coil layer is in stator slot 21
In be in different layers.Series, parallel or mixed connection between multiple coil layers of every phase winding.
Preferably, as shown in Figures 8 to 10, the quantity of the stator slot 21 between two straight line portions 31 of each coil is preferable
It is 2.In the adjacent two layers coil layer of every phase winding, all overhangs are successively set along the circumferential direction of stator core 20
It sets, specifically, by taking a stator slot 21 as an example, two layers of two overhangs of corresponding windings are in the two of the stator slot 21
Side.The series connection of multiple coils, mixed connection or parallel connection in each coil layer.
In some embodiments of the invention, during installation, winding by every slot conductor number or and is divided into N around radical
Group, in order to guarantee the uniformity of end, N is preferably even number, this N group coil is embedded into according to certain rules in stator slot 21, each group
Lead-out wire is connected to together.When motor every phase embedding, every two groups of coils as a winding element, every phase share N/2 around
Group unit.The then embedding sequence of each winding element coil of A phase winding are as follows: if first group embeds the wire according to clockwise direction,
Second group then embeds the wire according to counter clockwise direction, same layer of two 31 quartiles of straight line portion of same coil in different slots, per embedding
Enter a winding element and carry out an end folding and shaping, in this way when end turn is folded with shaping, per treatment is led
The quantity of line can greatly reduce, and reduce the difficulty of operation, but also the distribution of shapes after the shaping of end is more uniform.Similarly B
Mutually and C phase also successively embeds the wire first winding element coil according to same method.Other winding elements are successively according to the method described above
It repeats to embed the wire with the sequence of A-B-C phase, until embedding complete N/2 winding element.
In some embodiments of the invention, with 8 pole, 24 slot, every slot conductor number 7, and the axial magnetic for being 8 around radical is powered
For machine stator.By every phase winding be divided into 4 groups (every group of coil and be 2 around radical, the quantity of coil is 4, i.e., every phase around
Each coil layer of group can have 4 coils), every 2 groups are a winding element, then every phase totally 2 winding elements, and settable
It is four layers, as shown in Fig. 8 to Figure 10.It when coil makes, is enclosed by 2 conducting wires and around rear coiling 7, forms a coil, in every phase
Every 8 coils are as a winding element (wherein 4 coils embed the wire clockwise, and 4 coils embed the wire counterclockwise).When embedding, often
Two straight line portions 31 of a coil are respectively embedded in the same layer of different slots, according to the embedding complete three-phase of the sequence of A, B, C three-phase around
1st winding element of group, then according to embedding complete 2nd winding element of same rule, every mutually each winding element winding insertion is laggard
Row end folds and shaping, last every phase enter end and 4 groups of lead-out wires of outlet are connected in parallel respectively, forming every slot conductor number is
7, and series, parallel or mixed connection can also be carried out certainly as shown in figure 11 around the winding construction that radical is 8.
In some embodiments of the invention, with 8 pole, 24 slot, every slot conductor number 14, and the axial magnetic for being 4 around radical is powered
For machine stator: by every phase winding be divided into 4 groups (every group of coil and be 2 around radical, the quantity of coil is 4), every 2 groups are
One winding element, then every phase totally 2 winding elements, and may be configured as four layers.Coil make when, by 2 conducting wires and after around
System 7 circle, form a coil, in every phase every 8 coils as a winding element (wherein 4 coils embed the wire clockwise, 4
Coil embeds the wire counterclockwise) embedding when, two straight line portions 31 of each coil are respectively embedded in the same layer of different slots, according to A,
B, the 1st winding element of the embedding complete three-phase windings of the sequence of C three-phase, it is every mutually each then according to the embedding complete 2nd group of unit of same rule
End folding and shaping are carried out after the insertion of winding element winding, last every phase enters the 4 groups of conducting wires in end and outlet difference respectively two-by-two
Be connected in parallel after series connection, as shown in figure 12, (or it is in parallel two-by-two after be connected in series, as shown in figure 13) form every slot conductor number and be
14, and the winding construction for being 4 around radical.
In some embodiments of the invention, with 8 pole, 24 slot, every slot conductor number 28, and the axial magnetic for being 4 around radical is powered
For machine stator: by every phase winding be divided into 4 groups (every group of coil and be 4 around radical, the quantity of coil is 4), every 2 groups are
One winding element, then every phase totally 2 winding elements, and may be configured as four layers.Coil make when, by 4 conducting wires and after around
System 7 circle, form a coil, in every phase every 8 coils as a winding element (wherein 4 coils embed the wire clockwise, 4
Coil embeds the wire counterclockwise).When embedding, two straight line portions 31 of each coil are respectively embedded in the same layer of different slots, according to
A, the 1st winding element of the embedding complete three-phase windings of the sequence of B, C three-phase, then according to embedding complete 2nd winding element of same rule, every phase
End folding and shaping are carried out after each winding element winding insertion, last every phase enters the 4 groups of conducting wires difference in end and outlet difference
It is connected in series, as shown in figure 14, forming every slot conductor number is 28, and the winding construction for being 4 around radical.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (8)
1. a kind of stator winding structure of axial-flux electric machine, including the stator core with multiple stator slots and in the stator
The three-phase windings of coiling on iron core, which is characterized in that the medial end of winding described in every phase and/or outboard end are to the stator
The yoke portion of iron core is bent, so that the inner end of the three-phase windings and/or outboard end are folded to the yoke portion.
2. stator winding structure according to claim 1, which is characterized in that
Two straight line portions of each coil of winding described in every phase are located at the same layer in two stator slots.
3. stator winding structure according to claim 2, which is characterized in that
The straight line portion installed in each stator slot is the straight line portion of winding described in same phase.
4. stator winding structure according to claim 2 or 3, which is characterized in that
Winding described in every phase has multiple coil layers；
Each coil layer has multiple coils, and the straight line portion of multiple coils is in same in the stator slot
One layer；
The straight line portion of coil layer described in any two is in different layers in the stator slot.
5. stator winding structure according to claim 4, which is characterized in that
Series, parallel or mixed connection between multiple coil layers of winding described in every phase.
6. stator winding structure according to claim 4, which is characterized in that
In coil layer described in the adjacent two layers of the winding described in every phase, all overhangs are along the stator core
Circumferential direction is set gradually.
7. stator winding structure according to claim 1, which is characterized in that
The quantity of the stator slot between two straight line portions of each coil is 2.
8. stator winding structure according to claim 4, which is characterized in that
Multiple coil series connection in each coil layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479330.8A CN109274189A (en) | 2018-12-05 | 2018-12-05 | Stator winding structure of axial flux machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479330.8A CN109274189A (en) | 2018-12-05 | 2018-12-05 | Stator winding structure of axial flux machine |
Publications (1)
| Publication Number | Publication Date |
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| CN109274189A true CN109274189A (en) | 2019-01-25 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811479330.8A Pending CN109274189A (en) | 2018-12-05 | 2018-12-05 | Stator winding structure of axial flux machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380549A (en) * | 2019-08-07 | 2019-10-25 | 南京好龙电子有限公司 | A kind of welded type motor winding terminal portion connecting structure |
| CN113872347A (en) * | 2021-09-26 | 2021-12-31 | 河北新四达电机股份有限公司 | Stator single-tooth structure and assembled stator |
| CN113937932A (en) * | 2021-10-11 | 2022-01-14 | 长鹰信质科技股份有限公司 | Stator core winding structure and winding method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110380549A (en) * | 2019-08-07 | 2019-10-25 | 南京好龙电子有限公司 | A kind of welded type motor winding terminal portion connecting structure |
| CN113872347A (en) * | 2021-09-26 | 2021-12-31 | 河北新四达电机股份有限公司 | Stator single-tooth structure and assembled stator |
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| CN113937932A (en) * | 2021-10-11 | 2022-01-14 | 长鹰信质科技股份有限公司 | Stator core winding structure and winding method thereof |
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Effective date of registration: 20240913 Address after: No. 57 Shennan Road, Maditou Village, Dayang Street, Linhai City, Taizhou City, Zhejiang Province (self declared) Applicant after: Keren Electric Technology (Zhejiang) Co.,Ltd. Country or region after: China Address before: 310018 rooms 1001-1002 and 1011-1018, building 17, No. 57, kejiyuan Road, Baiyang street, Hangzhou Economic and Technological Development Zone, Zhejiang Province Applicant before: ZHEJIANG TAIYUN AUTOMOTIVE TECHNOLOGY Co.,Ltd. Country or region before: China |