CN109067025A - Disc type electric machine, the stator core of disc type electric machine and its manufacturing method - Google Patents
Disc type electric machine, the stator core of disc type electric machine and its manufacturing method Download PDFInfo
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- CN109067025A CN109067025A CN201811022884.5A CN201811022884A CN109067025A CN 109067025 A CN109067025 A CN 109067025A CN 201811022884 A CN201811022884 A CN 201811022884A CN 109067025 A CN109067025 A CN 109067025A
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- type electric
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- folding line
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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
- H02K1/148—Sectional cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/021—Magnetic cores
- H02K15/022—Magnetic cores with salient poles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention provides a kind of stator core of disc type electric machine, segment core includes multiple joins end to end and the iron core unit of arranged stacked, multiple iron core units are to take shape on the length direction of same iron core band, and the Unequal distance iron core unit of the cumulative arrangement of width；It is provided between two iron core units of arbitrary neighborhood and turns down the folding line groove that position is limited to it.Multiple iron core units take shape on same iron core band, and the cumulative arrangement of width on the length direction of iron core band, by way of fold stacking, so that trapezoidal structural segmented iron core after the stacking of multiple iron core units.When being processed to iron core band, Unequal distance iron core unit can be processed on iron core band by the folding line groove of punching press predetermined structure, through processes such as collapsibles, directly form the segment core of trapezium structure, reduce the difficulty of processing of segment core, reduce costs.The present invention also provides the manufacturing methods of a kind of disc type electric machine and its stator core.
Description
Technical field
The present invention relates to motor fields, more specifically to a kind of disc type electric machine, disk type motor stator core and its system
Make method.
Background technique
Disc type electric machine is also motor in axial magnetic field, and the direction in the magnetic field inside motor is axially axial magnetic field electricity
Machine generally all presents flat.
Manufacture for most of iron cores of motor generally uses silicon steel sheet, amorphous alloy, powder metallurgy and other kinds
The permeability alloys material of class, wherein occupying larger proportion is silicon steel sheet material iron core.For conventional radial magnetic field motor, motor
Iron core is all by silicon steel sheet punching press, stacks and formed, but for disc type electric machine, due to its magnetic direction be it is axial,
So cannot be realized by conventional iron core technique.
The iron core of disc type electric machine is divided into integrated iron core and segment core, and integrated iron core is generally through silicon-steel sheet coiled by way of
Realize, and for segment core, due to iron core require the cross section profile of stacking direction be usually similar trapezoidal shape (
Can be other irregular shapes), it is difficult to directly realized by the method for conventional single sheet punching press stacking.
It is a kind of in the prior art to meet the iron core that cross section profile is trapezoidal requirement, by using the silicon steel of different shape size
Piece laminates, and then winding surrounds the circumference profile coiling of the iron core.In the program, due to using the silicon steel of a variety of different sizes
Piece increases Lamination mould so a variety of different Lamination moulds is needed to carry out punching press to the punching of every kind of different shape
Manufacturing expense.
Secondly, the silicon steel sheet of a variety of different shape specifications needs to be arranged and filled according to specified sequence again in the later period
Match, increases the difficulty of assembly.Moreover, because iron core is the stack of laminations by very limited multiple and different shapes come approximate
Trapezoid cross section is approached, is ladder-like in the excircle configuration of iron core.When winding is wrapped in core exterior surface, winding and core exterior
There are gaps in face, cause core section product utilization rate not high, reduce the performance of motor.
In the prior art by being process using the technique of powder metallurgy to segment core, using having insulated
The magnetic conduction ferrous powder granules (soft-magnetic composite material SMC) of cladding suppress, to obtain the iron core of any irregular shape.
However, the cost of soft-magnetic composite material is 3~4 times of silicon steel sheet, in addition the cost of powder compaction device is also more
It is expensive；The electromagnetic performance of soft-magnetic composite material is poorer than silicon steel sheet, and the core loss of motor is caused to increase, and efficiency reduces.
Therefore, the preparation difficulty for how reducing disc iron, which is that current those skilled in the art are urgently to be resolved, asks
Topic.
Summary of the invention
In view of this, the present invention provides a kind of stator core of disc type electric machine, to reduce the preparation of disc iron
Difficulty；The present invention also provides a kind of disc type electric machines；The present invention also provides a kind of manufacturing methods of disk type motor stator core.
In order to achieve the above object, the invention provides the following technical scheme:
A kind of segment core circumferentially that multiple circular stator cores being arranged thereon, the segment core includes multiple
Join end to end and arranged stacked iron core unit, multiple iron core units are the length direction for taking shape in same iron core band
On, and the Unequal distance iron core unit of the cumulative arrangement of width；It is provided between two iron core units of arbitrary neighborhood and it is turned over
The folding line groove that folding position is limited.
Preferably, in the stator core of above-mentioned disc type electric machine, the folding line groove is the width along the iron core band
The strip groove of direction arrangement.
Preferably, in the stator core of above-mentioned disc type electric machine, the folding line groove includes multiple along the iron core band
Width direction arranged for interval, and run through iron core thickness of strip direction separation trough.
Preferably, it in the stator core of above-mentioned disc type electric machine, is also set between two iron core units of arbitrary neighborhood
It is equipped with the pole shoe positioned at iron core unit width direction side, the fold end of the iron core unit, which is additionally provided with, surrounds the pole
The stamped groove of boots.
Preferably, in the stator core of above-mentioned disc type electric machine, the pole shoe is wide including being located at the iron core unit
The first pole shoe and the second pole shoe of direction two sides are spent, the stamped groove is located at the middle part at iron core unit fold end.
Preferably, in the stator core of above-mentioned disc type electric machine, the pole shoe is located at the iron core unit width direction
Side, the stamped groove run through the other side along iron core unit fold end.
Preferably, in the stator core of above-mentioned disc type electric machine, the folding line groove is set to the iron core thickness of strip
The side in direction.
Preferably, in the stator core of above-mentioned disc type electric machine, the folding line groove includes being respectively arranged at the iron core
The the first folding line groove and the second folding line groove of thickness of strip direction two sides.
A kind of disc type electric machine, including casing and the stator core being set in the casing, the stator core has such as
The stator core of disc type electric machine described in upper any one.
A kind of manufacturing method of disk type motor stator core, comprising steps of
1) multiple along the iron core strip width by the first predetermined dimension sequential punching along the length direction of iron core band
The folding line groove that direction is stretched out, obtains iron core unit to be turned down；
2) iron core unit to be turned down successively is turned down along the folding line groove so that the adjacent iron core unit it
Between be layered on top of each other compression, obtain iron core unit to be solidified；
3) it is fixedly connected adjacent by the iron core unit to be solidified, acquisition stator core.
Preferably, in the manufacturing method of above-mentioned disk type motor stator core, further include before the step 1), along the iron
On the length direction of core ribbon material, by the multiple stamped grooves for surrounding pole shoe of the second predetermined dimension punching press.
Preferably, in the manufacturing method of above-mentioned disk type motor stator core, first predetermined dimension is along the iron
On the length direction of core ribbon material, the cumulative arrangement of the width of the iron core unit.
Point circumferentially of multiple circular stator cores is arranged in the stator core of disc type electric machine provided by the invention thereon
Iron leg core, segment core include it is multiple join end to end and arranged stacked iron core unit, multiple iron core units be take shape in it is same
On the length direction of iron core band, and the Unequal distance iron core unit of the cumulative arrangement of width；Two iron core units of arbitrary neighborhood it
Between be provided with and turn down the folding line groove that position is limited to it.Stator core circumferentially around multiple segment cores are arranged, often
A segment core is made of the iron core unit of arranged stacked, is connected from beginning to end between two adjacent iron core units.Multiple iron core lists
Member takes shape on same iron core band, and the cumulative arrangement of width on the length direction of iron core band, by preparing Unequal distance iron
Core unit, by way of fold stacking, so that trapezoidal structural segmented iron core after the stacking of multiple iron core units.Adjacent two
Folding line groove is set between a iron core unit, is limited by fold position of the folding line groove to two neighboring iron core unit.It is logical
It crosses the punch forming on same iron core band continuously to arrange and end to end iron core unit, by two neighboring iron core unit
Between punching press folding line groove mode so as to iron core band process when, can by the folding line groove of punching press predetermined structure, pass through
The processes such as collapsible directly form the segment core of trapezium structure, by using the processing Unequal distance iron core on iron core band
The superposition of iron core unit can be realized by mutually isostructural folding line groove in unit, reduces the difficulty of processing of segment core,
It reduces costs.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the first deployed configuration schematic diagram of segment core in the stator core of disc type electric machine provided by the invention；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
Fig. 3 is the partial enlarged view in Fig. 1 at B；
Fig. 4 is a kind of preferred structure schematic diagram of folding line groove in Fig. 1；
Fig. 5 is the second deployed configuration schematic diagram of segment core in the stator core of disc type electric machine provided by the invention.
Specific embodiment
The invention discloses a kind of stator cores of disc type electric machine, reduce the preparation difficulty of disc iron；This hair
It is bright to additionally provide a kind of disc type electric machine；The present invention also provides a kind of manufacturing methods of disk type motor stator core.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
The embodiment of the present invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
As shown in Figure 1-Figure 3, Fig. 1 is the first expansion of segment core in the stator core of disc type electric machine provided by the invention
Structural schematic diagram；Fig. 2 is the partial enlarged view in Fig. 1 at A；Fig. 3 is the partial enlarged view in Fig. 1 at B.
This case provides a kind of stator core of disc type electric machine, be arranged thereon multiple circular stator cores circumferentially
Segment core, segment core include it is multiple join end to end and arranged stacked iron core unit 1, multiple iron core units 1 be take shape in
On the length direction of same iron core band 2, and the Unequal distance iron core unit of the cumulative arrangement of width；Two iron core lists of arbitrary neighborhood
It is provided between member 1 and turns down the folding line groove 3 that position is limited to it.Stator core circumferentially around arranging multiple segmentation iron
Core, each segment core are made of the iron core unit 1 of arranged stacked, are connected from beginning to end between two adjacent iron core units 1.It is multiple
Iron core unit 1 takes shape on same iron core band 2, and the cumulative arrangement of width on the length direction of iron core band 2, passes through preparation
Unequal distance iron core unit 1, by way of fold stacking, so that trapezoidal structural segmented iron core after the stacking of multiple iron core units 1.
Folding line groove 3 is set between two adjacent iron core units 1, by folding line groove 3 to the fold position of two neighboring iron core unit 1
It sets and is limited.By on same iron core band 2 punch forming continuously arrange and end to end iron core unit 1, by right
The mode of punching press folding line groove between two neighboring iron core unit 1, so that when being processed to iron core band 2, it can be pre- by punching press
The folding line groove 3 for determining structure directly forms the segment core of trapezium structure, by using in iron core through processes such as collapsibles
Unequal distance iron core unit 1 is processed on band, the superposition of iron core unit can be realized by mutually isostructural folding line groove, reduce
The difficulty of processing of segment core, reduces costs.
In one specific embodiment of this case, folding line groove 3 is the strip groove arranged along the width direction of iron core band.Folding line
Groove 3 is strip groove, and arranges along the width direction of iron core band 2, i.e., when each iron core unit 1 turns down, fold direction is edge
On the length direction of iron core band 2, alternately inverted fold between adjacent iron core unit 1, so that the stacking direction of iron core unit 1
It is superimposed in the same direction.Folding line groove 3 is strip groove, when two neighboring iron core unit 1 turns down, provides phase by strip groove 3
Adjacent two iron core unit folding spaces, reduce the folding difficulty of iron core unit.
In one specific embodiment of this case, folding line groove 3 includes multiple width direction arranged for interval along iron core band 2,
And run through the separation trough of 2 thickness direction of iron core band.Folding line groove 3 is used for fixed to fold is formed between adjacent iron core unit 1
Position sets the separation trough on iron core thickness of strip direction for folding line groove 3, and arranges along the width direction of iron core band
Fold notches that are multiple, being formed on iron core band by separation trough reduce the fold difficulty between adjacent iron cores unit.
In one specific embodiment of this case, it is additionally provided between two iron core units 1 of arbitrary neighborhood positioned at iron core unit
The fold end of the pole shoe 4 of width direction side, iron core unit is additionally provided with the stamped groove for surrounding pole shoe.Pole shoe, particular for disk
It is positioned at the both ends of segment core, to realize the field homogeneity distribution in iron core simultaneously in the segmented stator core of formula motor
The magnetic conduction construction in air gap is diffused into according to the structure of segment core.In iron core unit 1, pole shoe 4 can be located at iron core band 2
The two sides of width direction can also only be arranged in side, can be by adjacent when needing the upper setting pole shoe in segment core
Two iron core units 1 between punch forming stamped groove 5, stamped groove 5 is located at the middle part of iron core band 2,2 width side of iron core band
To edge and stamped groove 5 between surround pole shoe 4, folding line groove 3 is located at the connecting pin of two neighboring 1 pole shoe 4 of iron core unit, lead to
Cross the fold of adjacent iron cores unit 1, after 1 arranged stacked of iron core unit, pole shoe position is overlapped mutually, and forms the pole shoe of segment core
Structure.
In one specific embodiment of this case, pole shoe 4 includes the first pole shoe for being located at 1 width direction two sides of iron core unit
41 and second pole shoe 42, stamped groove 5 be located at the middle part that iron core unit 1 turns down end.
According to different segmented stator cores, pole shoe 4 can be set to two of distribution and iron core unit width direction,
The side in iron core strip width direction can be set, when for unilateral pole shoe, stamped groove 5 runs through iron core strip width direction
The other side.
It is understood that segment core is the symmetrical structure in its width direction, therefore in pole shoe punch forming,
Pole shoe between two neighboring iron core unit 1 is dissymmetrical structure, i.e., along the direction that segment core width reduces, lower layer's iron core
The pole shoe length of unit 1 is greater than upper layer pole shoe length, in the punching press preparation for carrying out stamped groove, iron core unit width direction both ends
Stamped groove pressing direction it is opposite.
As shown in Figures 4 and 5, Fig. 4 is a kind of preferred structure schematic diagram of folding line groove in Fig. 1；Fig. 5 is provided by the invention
Second deployed configuration schematic diagram of segment core in the stator core of disc type electric machine.
In one specific embodiment of this case, pole shoe 4 is located at the side of 1 width direction of iron core unit, and stamped groove 5 runs through along iron
The other side at core unit fold end.
Similarly, for the iron core unit 1 of only one pole shoe 4, there are two pole shoes 4 for the arragement construction and tool of pole shoe 4
The impact style of iron core unit 1 is identical, and in stamped groove preparation, without punching press in the middle part in iron core strip width direction, directly
It connects through the side in iron core strip width direction.
In one specific embodiment of this case, folding line groove 3 is set to the side of 2 thickness direction of iron core band.
Folding line groove 3 includes the first folding line groove and the second folding line for being respectively arranged at 2 thickness direction two sides of iron core band
Groove.The arrangement of folding line groove 3 is for positioning fold position, dropping simultaneously in adjacent two iron core units 1 fold
Fold difficulty between low adjacent iron core unit 1.Folding line groove 3 may be disposed at the side of 2 thickness direction of iron core band, can also
It is arranged in the two sides in iron core thickness of strip direction.
Iron core unit provided in this embodiment takes shape on same iron core band, passes through processing folding line groove and stamped groove
Mode forms the multiple iron core units continuously arranged, and segment core preparation is carried out by way of lamination.
Therefore in the molding of folding line groove and stamped groove, punching structure has important shadow to the structure of segment core
It rings.Folding line groove and stamped groove can be prepared by stamping die, since the fold turnover structure of adjacent iron cores unit is identical, can be led to
The processing of iron core band can be carried out by crossing a set of stamping die, without the iron core unit of independent punching press different size, reduce life
Produce cost.
Certainly, in iron core band forming process, wire cutting, laser cutting, Water Cutting or mach side can also be passed through
Formula is handled.
The stator core of the disc type electric machine provided in based on the above embodiment, the present invention also provides a kind of disc type electric machine,
Including casing and the stator core being set in casing, which is the stator of the disc type electric machine provided in above-described embodiment
Iron core.
Since the disc type electric machine uses the stator core of the disc type electric machine of above-described embodiment, so the disc type electric machine is by disk
The stator core bring beneficial effect of formula motor please refers to above-described embodiment
The present embodiment additionally provides a kind of manufacturing method of disk type motor stator core, comprising steps of
1) multiple along 2 width side of iron core band by the first predetermined dimension sequential punching along the length direction of iron core band 2
To the folding line groove 3 of stretching, iron core unit to be turned down is obtained.
Iron core unit 1 continuously arranges along the length direction of iron core band 2, by the method for punching press folding line groove 3, according to
First predetermined dimension, the multiple folding line grooves 3 of punching press on iron core band, width direction cloth of the folding line groove 3 along iron core band 2
It sets, obtains iron core unit to be turned down.By the multiple folding line grooves 3 of sequential punching on iron core band 2, and by folding line groove 3
Spacing be arranged according to the first predetermined dimension so that iron core band 2 in it is multiple can the iron core unit 2 of arranged stacked pull open
Structure carries out laminated structure according to the position of folding line groove 3, the segment core after can be obtained fold.
2) iron core unit 1 to be turned down successively is turned down along folding line groove 3, so that phase alternating layers between adjacent iron core unit 1
It laminates tightly, obtains iron core unit to be solidified.
Iron core band 2 after processing is completed, needs for each iron core unit 2 to be overlapped mutually, and is to turn over the position of folding line groove 3
Fulcrum is rolled over, so that being layered on top of each other superposition between adjacent iron core unit 1, and the iron core unit 1 after stacking is compressed, is obtained
Preliminary molding iron core unit to be solidified.
3) it is fixedly connected adjacent by iron core unit to be solidified, acquisition stator core.
After iron core unit 1 after stacking is mutually compressed, it is also necessary to carry out compression processing, multi-disc is in soft fluffy state
Iron core unit 1 is compressed, and to improve the stacking factor of iron core entirety, improves iron core utilization, can pass through welding or glue
Connection etc. modes finally guarantee that entire segment core is fastenedly connected so that being fastened between two adjacent iron core units and be integrated,
Obtain final segment core.
In one specific embodiment of this case, further include before the step 1), along the length direction of iron core band 2, by
The multiple stamped grooves 5 for surrounding pole shoe of two predetermined dimension punching presses.
For different segment cores, pole shoe structure is set thereon, by stamping out stamped groove in advance on iron core band 2
5, it is that fold fulcrum is turned down with folding line groove 3, iron core band 2 surrounds punching press when superposition is laminated in adjacent iron core unit 1
The edge of the width direction of slot 5 forms the pole shoe structure of segment core.Meanwhile being reduced with segment core along trapezium structure width
For direction, the pole shoe structure of two neighboring iron core unit 1 is that the big iron core unit pole shoe of width is short, the small iron core list of width
The long dissymmetrical structure of first pole shoe, therefore stamped groove, in punching press, with being centrosymmetrically arranged for iron core unit 1, i.e. stamped groove 5 exists
Two pressing directions of 1 width direction of iron core unit on the contrary, by the spacing between stamped groove 5 is set as alternately changing the
Two predetermined dimension structures, the multiple stamped grooves 5 for surrounding pole shoe of punching press, the structure arrangement for meeting pole shoe require.
In one specific embodiment of this case, the first predetermined dimension is the iron core unit 1 along the length direction of iron core band 2
The cumulative arrangement of width.Since iron core unit 1 is overlapped mutually the trapezium structure of composition segment core, i.e., iron core unit 1 is in width
Direction is cumulative along the length direction of iron core band 2 or decrescence structure, and the first predetermined dimension is adapted to the segmentation iron of different size
The structural requirement of core designs the dimensions of different iron core units, and meet different segment cores prepares needs.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (12)
1. the segment core circumferentially of multiple circular stator cores is arranged in a kind of stator core of disc type electric machine thereon,
Be characterized in that, the segment core include it is multiple join end to end and the iron core unit of arranged stacked, multiple iron core units are
It takes shape on the length direction of same iron core band, and the Unequal distance iron core unit of the cumulative arrangement of width；Two of arbitrary neighborhood
It is provided between the iron core unit and turns down the folding line groove that position is limited to it.
2. the stator core of disc type electric machine according to claim 1, which is characterized in that the folding line groove is along the iron
The strip groove of the width direction arrangement of core ribbon material.
3. the stator core of disc type electric machine according to claim 1, which is characterized in that the folding line groove includes multiple edges
The width direction arranged for interval of the iron core band, and run through the separation trough in iron core thickness of strip direction.
4. the stator core of disc type electric machine according to claim 2, which is characterized in that two iron cores of arbitrary neighborhood
The pole shoe positioned at iron core unit width direction side is additionally provided between unit, the fold end of the iron core unit is also set up
There is the stamped groove for surrounding the pole shoe.
5. the stator core of disc type electric machine according to claim 4, which is characterized in that the pole shoe includes being located at institute
The first pole shoe and the second pole shoe of iron core unit width direction two sides are stated, the stamped groove is located at iron core unit fold end
Middle part.
6. the stator core of disc type electric machine according to claim 4, which is characterized in that the pole shoe is located at the iron core list
The side of first width direction, the stamped groove run through the other side along iron core unit fold end.
7. the stator core of disc type electric machine according to claim 2, which is characterized in that the folding line groove is set to described
The side in iron core thickness of strip direction.
8. the stator core of disc type electric machine according to claim 2, which is characterized in that the folding line groove includes setting respectively
It is placed in the first folding line groove and the second folding line groove of iron core thickness of strip direction two sides.
9. a kind of disc type electric machine, including casing and the stator core being set in the casing, which is characterized in that the stator iron
Core has the stator core of the disc type electric machine as described in any one of claim 1-8.
10. a kind of manufacturing method of disk type motor stator core, which is characterized in that comprising steps of
1) multiple along iron core strip width direction by the first predetermined dimension sequential punching along the length direction of iron core band
The folding line groove of stretching, obtains iron core unit to be turned down；
2) iron core unit to be turned down successively is turned down along the folding line groove, so that phase between the adjacent iron core unit
Alternating layers, which laminate, tightly obtains iron core unit to be solidified；
3) it is fixedly connected adjacent by the iron core unit to be solidified, acquisition stator core.
11. the manufacturing method of disk type motor stator core according to claim 10, which is characterized in that before the step 1)
Further include, along the length direction of the iron core band, by the multiple stamped grooves for surrounding pole shoe of the second predetermined dimension punching press.
12. the manufacturing method of disk type motor stator core according to claim 11, which is characterized in that described first is predetermined
Specification is the cumulative arrangement of the width of the iron core unit along the length direction of the iron core band.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811022884.5A CN109067025A (en) | 2018-09-04 | 2018-09-04 | Disc type electric machine, the stator core of disc type electric machine and its manufacturing method |
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| JP2018129946A (en) * | 2017-02-08 | 2018-08-16 | 株式会社デンソー | Manufacturing method of stator core, axial gap motor, stator core |
| CN207134901U (en) * | 2017-09-19 | 2018-03-23 | 重庆理工大学 | A kind of ribbon core disk permanent magnet generator of no magnetic pole effect |
| CN208923924U (en) * | 2018-09-04 | 2019-05-31 | 上海盘毂动力科技股份有限公司 | Disc type electric machine and stator core |
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