CN214850656U - Silicon steel coil, stator, rotor core, rotor and disc type motor - Google Patents
Silicon steel coil, stator, rotor core, rotor and disc type motor Download PDFInfo
- Publication number
- CN214850656U CN214850656U CN202120753986.5U CN202120753986U CN214850656U CN 214850656 U CN214850656 U CN 214850656U CN 202120753986 U CN202120753986 U CN 202120753986U CN 214850656 U CN214850656 U CN 214850656U
- Authority
- CN
- China
- Prior art keywords
- silicon steel
- layer
- multilayer
- steel strip
- strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 255
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 78
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052710 silicon Inorganic materials 0.000 abstract description 13
- 239000010703 silicon Substances 0.000 abstract description 13
- 239000011229 interlayer Substances 0.000 abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 38
- 238000004804 winding Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000006247 magnetic powder Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000012792 core layer Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The embodiment of the utility model provides a silicon steel is rolled up, stator, rotor core, rotor and disc motor, the silicon steel coil is convoluteed by many silicon billet and is formed and have multilayer silicon steel layer structure, and every silicon billet all constitutes multilayer silicon steel layer, in the multilayer silicon steel layer that every silicon billet constitutes, has the silicon steel layer that one deck or other silicon billets of multilayer constitute between the nearest two-layer silicon steel layer. The silicon steel roll reduces the interlayer eddy current loss when used as a rotor core or a stator.
Description
Technical Field
The utility model belongs to the technical field of the disc motor, concretely relates to silicon steel is rolled up, stator, rotor core, rotor and disc motor.
Background
The rotor of the disc type permanent magnet motor is mostly of a surface-mounted magnetic steel structure, and the magnetic steel is fixed on the magnetic conductive iron core in a bonding mode, a mechanical fastening mode or other modes. At present, the magnetic conduction structures commonly used in the market have two types: the magnetic powder sintered iron core and the silicon steel strip wound iron core.
The magnetic powder sintered iron core is formed by splicing magnetic powder sintered blocks into a ring or a whole ring sintered by magnetic powder. Compared with the silicon steel coiled iron core, the magnetic resistance is large, the magnetic conductivity is poor, the iron core loss is large, and the performance and the efficiency of the motor are influenced.
Referring to fig. 1, in the prior art, a long silicon steel strip Si is wound into an integral ring structure. Referring to fig. 2, because the silicon steel coil is formed by only winding a single silicon steel strip, adjacent layers are connected on a radial interface of the silicon steel coil, a shear surface of the silicon steel strip is exposed silicon steel and burrs exist, and when the silicon steel strip is wound, the layers are extruded, and the burrs easily generate a connection short circuit point S, so that a closed conductive loop is formed, and a large-area connection short circuit phenomenon between the layers is caused.
Disclosure of Invention
In order to solve the technical problem, the embodiment of the utility model provides a silicon steel coil, rotor core, stator, rotor and disc motor is proposed.
The inventor finds that: in the disk motor, no matter rotor core, or stator, the loss of silicon steel roll core is divided into two parts: the in-sheet iron loss of the silicon steel rolled iron core and the interlayer eddy current loss of the silicon steel rolled iron core. The iron loss in the sheet of the silicon steel roll iron core is the inevitable normal loss. The interlayer eddy current loss of the silicon steel roll iron core is extra loss caused by faults in the process or the manufacturing process, and exists due to the fact that a closed conductive loop is formed between adjacent layers or multiple layers of the silicon steel roll iron core. The silicon steel coil iron core is in the slitting (by wide silicon steel coil, through slitting mill equipment, the roll cutting becomes narrow silicon steel coil) and the coiling in-process, because the silicon steel coil deformation leads to naked iron contact between the layer to and the burr of naked iron position links to each other, these even electric short circuit points can produce closed conductive circuit.
Thus, the inventors believe that: even the contact also can't form closed conductive loop through making burr on the silicon steel strip shear surface, perhaps, even form closed conductive loop, through making the loop resistance increase, also can greatly reduced even avoid appearing the interlaminar eddy current loss.
The inventor also found that: if a single silicon steel coil is wound into the iron core, any one electric short circuit point on the iron core can form a closed conductive loop between the layers of the silicon steel coil iron core, extra interlayer eddy current loss is generated, the loop length is one circle, the loop resistance is small, and the interlayer eddy current loss is large.
In view of this, on the one hand, the utility model discloses iron core is rolled up to silicon steel by many silicon steel strips winding, then any one deck silicon steel strip does not belong to same silicon steel strip rather than adjacent layer, when having two even electric short circuit points on the iron core is rolled up to silicon steel, also has very big probability (even electric point is not in same two) can not form closed conductive loop. Even if two adjacent silicon steel bars are provided with two electrically-connected short circuits, the two electrically-connected short circuit points are separated by a length of a plurality of circles with a high probability, and the two electrically-connected short circuit silicon steel bars can form a closed conductive loop only through a longer path, so that the loop resistance is greatly increased, and the additional interlayer eddy current loss is reduced. On the other hand, the embodiment of the utility model provides a after the iron core is rolled up into the silicon steel at the silicon steel book, roll up the iron core to the silicon steel and blacken the processing, make the silicon steel roll up the naked iron point and the burr point surface insulation of iron core, strengthen insulating properties between its layer, greatly reduced the quantity of even electric short circuit point to greatly reduced the silicon steel and rolled up the probability that forms closed conductive loop between the iron core layer, reduced the eddy current loss between the iron core layer, when this iron core is used for the motor, improved motor efficiency.
According to the utility model discloses a first aspect, the embodiment of the utility model provides a silicon steel coil is proposed, silicon steel coil is convoluteed by many silicon steel strips and is formed and have multilayer silicon steel layer structure, and every silicon steel strip all constitutes multilayer silicon steel layer, in the multilayer silicon steel layer that every silicon steel strip constitutes, has the silicon steel layer that one deck or other silicon steel strips of multilayer constitute between the nearest two-layer silicon steel layer.
According to the utility model discloses a second aspect, the embodiment of the utility model provides a silicon steel is rolled up, including first silicon steel strip and second silicon steel strip, first silicon steel strip and second silicon steel strip are rolled up and are formed to have multilayer silicon steel layer structure, and first silicon steel strip and second silicon steel strip constitute multilayer silicon steel layer respectively, have the silicon steel layer that another silicon steel strip constitutes between the nearest two-layer silicon steel layer in the multilayer silicon steel layer that every silicon steel strip constitutes.
According to a third aspect of the present invention, an embodiment of the present invention provides a stator of a motor having a yoke disc, wherein the stator includes any one of the above-mentioned silicon steel coils.
According to a fourth aspect of the present invention, an embodiment of the present invention provides a yoke-disc motor, which includes the above stator.
According to the utility model discloses a fifth aspect, the embodiment of the utility model provides a rotor core is proposed, rotor core includes that it has the silicon steel book of multilayer silicon steel layer structure to coil to form by many silicon steel strips, and every silicon steel strip all constitutes multilayer silicon steel layer, in the multilayer silicon steel layer that every silicon steel strip constitutes, has the silicon steel layer that one deck or other silicon steel strips of multilayer constitute between the nearest two-layer silicon steel layer.
According to the utility model discloses a sixth aspect, the embodiment of the utility model provides a rotor core is proposed, rotor core includes first silicon steel strip and second silicon steel strip, first silicon steel strip and second silicon steel strip are rolled up and are formed the silicon steel coil that has multilayer silicon steel layer structure, and first silicon steel strip and second silicon steel strip constitute multilayer silicon steel layer respectively, have the silicon steel layer that another silicon steel strip constitutes between the nearest two-layer silicon steel layer in the multilayer silicon steel layer that every silicon steel strip constitutes.
According to a seventh aspect of the present invention, an embodiment of the present invention provides a rotor, including any one of the above-described rotor cores.
According to the utility model discloses an eighth aspect, the embodiment of the utility model provides a disc motor is proposed, disc motor includes above-mentioned rotor.
The utility model discloses beneficial effect of embodiment: when the silicon steel coil provided by the embodiment of the utility model is used as a rotor core or a stator, the interlayer eddy current loss is reduced, the manufacturing process is simple, and the additional cost is not increased; the disc type permanent magnet motor adopting the rotor core or the stator is higher in efficiency and more reliable in operation.
Drawings
Fig. 1 is a schematic structural view of a rotor core formed by winding a single silicon steel strip in the prior art.
Fig. 2 is a schematic radial cross-sectional view of a rotor core formed by winding a single silicon steel strip in the prior art, that is, a cross-section shown by a rectangular frame in fig. 1, when there is an electrical short-circuit point S in adjacent layers, a closed loop can be formed between the adjacent layers due to the connection between the adjacent layers, and further back-electromotive force and current are generated between the adjacent layers, thereby generating additional interlayer eddy current loss.
Fig. 3 is a front view of a rotor core structure according to an embodiment of the present invention, which is formed by winding five silicon steel bars Si1, Si2, Si3, Si4, and Si 5.
Fig. 4 is an oblique view of a rotor core structure according to an embodiment of the present invention, which is formed by winding five silicon steel bars Si1, Si2, Si3, Si4, and Si 5.
Fig. 5 is a front view of a rotor core structure provided by an embodiment of the present invention, wherein Sa, Sb and Sc points are electrically connected short-circuit points, and Sd and Se are electrically connected in a large area.
Fig. 6 is a radial cross-sectional schematic view of a rotor core formed by winding a plurality of silicon steel bars, and S1 and S2 are electrically connected short-circuit points.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the present invention is not limited to the drawings and the following embodiments.
According to the utility model discloses a first aspect, the embodiment of the utility model provides a silicon steel coil is proposed, silicon steel coil is convoluteed by many silicon steel strips and is formed and have multilayer silicon steel layer structure, and every silicon steel strip all constitutes multilayer silicon steel layer, in the multilayer silicon steel layer that every silicon steel strip constitutes, has the silicon steel layer that one deck or other silicon steel strips of multilayer constitute between the nearest two-layer silicon steel layer.
The embodiment of the utility model provides a still provide a silicon steel book, including first silicon steel strip and second silicon steel strip, first silicon steel strip and second silicon steel strip are rolled up and are formed the multilayer silicon steel layer structure that has, and first silicon steel strip and second silicon steel strip constitute multilayer silicon steel layer respectively, have the silicon steel layer that another silicon steel strip constitutes apart from between the nearest two-layer silicon steel layer in the multilayer silicon steel layer that every silicon steel strip constitutes. Obviously, those skilled in the art will understand that the silicon steel roll of the present embodiment is not limited to the two silicon steel strips of the first silicon steel strip and the second silicon steel strip, but may be formed by more silicon steel strips.
The coil of silicon steel can be used to manufacture a rotor core of a disc permanent magnet motor in one embodiment, and can be used to manufacture a stator of a yoke disc motor in another embodiment.
The embodiment of the utility model provides a rotor core, rotor core can be used for disk permanent-magnet machine for example, rotor core includes that the silicon steel that forms by many silicon billet coiling has multilayer silicon steel layer structure is rolled up, and every silicon billet all constitutes multilayer silicon steel layer, and in the multilayer silicon steel layer that every silicon billet constitutes, the silicon steel layer that has one deck or other silicon steel constitutions of multilayer between the nearest two-layer silicon steel layer.
The embodiment of the utility model provides a still provides a rotor core, rotor core can be used for disk permanent-magnet machine for example, rotor core includes first silicon billet and second silicon billet, first silicon billet and second silicon billet are rolled up and are formed the silicon steel coil that has multilayer silicon steel layer structure, and first silicon billet and second silicon steel strip constitute multilayer silicon steel layer respectively, have the silicon steel layer that another silicon steel strip constitutes between the nearest two-layer silicon steel layer in the multilayer silicon steel layer that every silicon billet constitutes. Obviously, those skilled in the art will understand that the rotor core of the present embodiment is not limited to the two silicon steel strips of the first silicon steel strip and the second silicon steel strip, but may be formed by more silicon steel strips.
Referring to fig. 3 and 4, in one embodiment, the rotor core is formed by winding five silicon steel bars, i.e., Si1, Si2, Si3, Si4 and Si5, wherein the winding start ends of the five silicon steel bars are sequentially overlapped and wound at intervals of a certain angle in the circumferential direction to form a silicon steel roll with a multi-layer silicon steel layer structure, each silicon steel bar respectively forms a plurality of silicon steel layers, but two adjacent silicon steel layers are formed by different silicon steel bars.
The embodiment of the utility model provides a still provide a stator that has yoke disk motor, the stator includes one of above-mentioned silicon steel coils.
An embodiment of the utility model provides a still provide a rotor, the rotor includes one of above-mentioned rotor core.
The embodiment of the utility model provides a still provide a disk motor, disk motor includes above-mentioned rotor.
The embodiment of the utility model provides a still provide a manufacturing approach of silicon steel coil, refer to fig. 3, fig. 4, this manufacturing approach can be used for making aforementioned rotor core, include following step:
s1, rotating a winding mandrel of the silicon steel coil winding equipment, and sequentially clamping a first silicon steel strip Si1, a second silicon steel strip Si2, a third silicon steel strip Si3, a fourth silicon steel strip Si4 and a fifth silicon steel strip Si5 on a positioning groove of the winding mandrel.
And S2, rotating the winding mandrel at a constant speed, and winding the silicon steel strip to obtain the silicon steel strip with the preset size.
The silicon steel roll is formed by winding five silicon steel strips, namely a first silicon steel strip Si1, a second silicon steel strip Si2, a third silicon steel strip Si3, a fourth silicon steel strip Si4, a fifth silicon steel strip Si5 and the like.
The silicon steel coil manufactured by the manufacturing method can be used for manufacturing a rotor core of a disc type permanent magnet motor in one embodiment, and can be used for manufacturing a stator of a yoke disc type motor in another embodiment.
The technical effects of the embodiments of the present invention will be described below with reference to fig. 5 and 6.
According to the utility model discloses rotor core, when mutual insulation between the silicon steel strip, eddy current loss only produces in each silicon steel strip piece. Referring to fig. 5, assuming that there is a connecting short-circuit point, such as Sa, Sb and Sc points in the figure, at the corresponding positions of the adjacent silicon steel layers near the starting ends of the silicon steel strips, where the Sa point is a connecting short-circuit point of the first silicon steel strip Si1 and the second silicon steel strip Si2, the Sb point is a connecting short-circuit point of the second silicon steel strip Si2 and the third silicon steel strip Si3, and the Sc point is a connecting short-circuit point of the third silicon steel strip Si3 and the fourth silicon steel strip Si4, since the Sa, Sb and Sc points belong to connecting short-circuit points of different silicon steel strips, a closed conductive loop cannot be formed, and no interlayer eddy current loss occurs. The silicon steel roll core is supposed to generate a large-area connection phenomenon at the Sd position and the Se position, however, each silicon steel strip which generates the connection short circuit at the Sd position and the Se position can form a closed conductive loop only through a longer path, and the longer closed conductive loops increase the resistance of the loop, so that the eddy current loss is greatly reduced. That is, when a plurality of silicon steel strips are wound into a coil, a closed loop circuit can be formed by short circuit between two adjacent silicon steel strips, so that the distance of the closed loop circuit is long, the resistance is large, and the interlayer eddy current is small. Similarly, referring to fig. 6, since adjacent silicon steel layers are made of different silicon steel strips, adjacent layers are not connected, and an induced back electromotive force (as shown by a rectangular frame in each silicon steel strip layer in the figure) is provided inside each layer, if only one electrically connected short-circuit point S1 exists in each adjacent layer, a closed loop cannot be formed between the adjacent layers, no interlayer eddy current loss is generated, and if another electrically connected short-circuit point S2 exists in each silicon steel strip, a closed loop is formed between the two electrically connected short-circuit points, and a back electromotive force and a current are generated in the closed loop, so that interlayer eddy current loss is generated. Because the area of the loop is fixed, the back electromotive force is fixed, the path of the loop is formed only by passing through a plurality of layers of silicon steel bars with high probability, the loop resistance is high, and the eddy current loss generated in the loop is low.
Eddy current loss test experiment
Sample 1: a silicon steel coiled iron core wound by a single silicon steel strip.
Sample 2: five silicon steel strip wound silicon steel coil iron cores.
The sample size of the silicon steel coiled iron core is as follows:
the loss test was performed on sample 1 and sample 2, respectively, by the core loss detection apparatus under the same test conditions. As a result, the loss value of sample 1 was 132W, and the loss value of sample 2 was 45W.
Therefore, the loss value of the silicon steel roll iron core of the sample 2 is 34% of the loss value of the sample 1, and the silicon steel roll iron core manufactured by the winding method can obviously reduce the loss value.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a silicon steel coil, its characterized in that, silicon steel coil is convoluteed by many silicon steel strips and is formed and have multilayer silicon steel layer structure, and every silicon steel strip all constitutes multilayer silicon steel layer, in the multilayer silicon steel layer that every silicon steel strip constitutes, has the silicon steel layer that one deck or the other silicon steel strips of multilayer constitute between the nearest two-layer silicon steel layer.
2. The utility model provides a silicon steel is rolled up, its characterized in that includes first silicon steel strip and second silicon steel strip, first silicon steel strip and second silicon steel strip are rolled up and are formed to have multilayer silicon steel layer structure, and first silicon steel strip and second silicon steel strip constitute multilayer silicon steel layer respectively, have the silicon steel layer that another silicon steel strip constitutes between the nearest two-layer silicon steel layer in the multilayer silicon steel layer that every silicon steel strip constitutes.
3. A stator of a yoke-disc motor, characterized in that it comprises a coil of silicon steel as claimed in claim 1 or 2.
4. A yoke-disc motor, characterized in that it comprises a stator according to claim 3.
5. The utility model provides a rotor core, its characterized in that, rotor core includes that it has the silicon steel book of multilayer silicon steel layer structure to coil the formation by many silicon steel strips, and every silicon steel strip all constitutes multilayer silicon steel layer, in the multilayer silicon steel layer that every silicon steel strip constitutes, has the silicon steel layer that one deck or other silicon steel strips of multilayer constitute between the nearest two-layer silicon steel layer.
6. The utility model provides a rotor core, its characterized in that, rotor core includes first silicon steel strip and second silicon steel strip, first silicon steel strip and second silicon steel strip are rolled up and are formed the silicon steel coil of strip that has multilayer silicon steel layer structure, and first silicon steel strip and second silicon steel strip constitute multilayer silicon steel layer respectively, have the silicon steel layer that another silicon steel strip constitutes between the nearest two-layer silicon steel layer in the multilayer silicon steel layer that every silicon steel strip constitutes.
7. A rotor, characterized in that the rotor comprises a rotor core according to claim 5 or 6.
8. A disc motor, characterized in that it comprises a rotor according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120753986.5U CN214850656U (en) | 2021-04-14 | 2021-04-14 | Silicon steel coil, stator, rotor core, rotor and disc type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120753986.5U CN214850656U (en) | 2021-04-14 | 2021-04-14 | Silicon steel coil, stator, rotor core, rotor and disc type motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214850656U true CN214850656U (en) | 2021-11-23 |
Family
ID=78762487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120753986.5U Active CN214850656U (en) | 2021-04-14 | 2021-04-14 | Silicon steel coil, stator, rotor core, rotor and disc type motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214850656U (en) |
-
2021
- 2021-04-14 CN CN202120753986.5U patent/CN214850656U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4363988A (en) | Induction disk motor with metal tape components | |
| EP1575146B1 (en) | Soft Magnetic composite powder metal cores | |
| JP6129966B2 (en) | Rotating electric machine and manufacturing method thereof | |
| CN105827027B (en) | Axial air-gap switched reluctance machines and preparation method thereof | |
| Zhu et al. | Influence of design parameters on output torque of flux-switching permanent magnet machines | |
| US7345396B2 (en) | Metallic laminations for magnetic circuits | |
| KR100602487B1 (en) | Stator for inner rotor motors and method of producing the same | |
| EP3093961A2 (en) | Windings for electrical machines | |
| CN101800456B (en) | Method for preparing amorphous alloy stator core by using modular mode | |
| Banchhor et al. | Design, modeling, and analysis of dual rotor axial flux induction motor | |
| CN214850656U (en) | Silicon steel coil, stator, rotor core, rotor and disc type motor | |
| JP4888138B2 (en) | Method for manufacturing field coil of rotating electrical machine | |
| CN214674577U (en) | Claw-pole motor stator core and motor assembly applying same | |
| JP2011234443A (en) | Coil and armature | |
| JP5884463B2 (en) | Rotating electric machine | |
| Morimoto | Performance improvement of induction motor made of three dimensional shaped SMC core | |
| JP2006136130A (en) | Permanent-magnet type rotating electric machine, manufacturing method for permanent magnet for use therein, and manufacturing method therefor using the method for permanent magnet | |
| Morimoto | Efficiency improvement of induction motor by 3-D core made of SMC | |
| CN112260422A (en) | Motor and axial magnetic suspension bearing stator thereof | |
| US10396614B2 (en) | Rotating electrical machine stator | |
| Morimoto | Rare earth free, traction motor for electric vehicle | |
| CN108141069A (en) | For the rotor of electric rotating machine | |
| JP2003143821A (en) | Induction motor | |
| CN109861427A (en) | A kind of high power density disc type motor winding construction and its bending preparation method | |
| Fukuda et al. | Load characteristics of induction motor made of Soft Magnetic Composite (SMC) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 313009, No. 585-483, Shiyuan West Road, Dongqian Street, Nanxun District, Huzhou City, Zhejiang Province Patentee after: Huzhou Hardcore Pai Technology Co.,Ltd. Country or region after: China Address before: 244000 Tongling Economic Development Zone, Anhui Province Patentee before: Tongling hardcore Technology Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |