CN104269242A - Arc-shaped vertically-wound inductor - Google Patents
Arc-shaped vertically-wound inductor Download PDFInfo
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- CN104269242A CN104269242A CN201410588039.XA CN201410588039A CN104269242A CN 104269242 A CN104269242 A CN 104269242A CN 201410588039 A CN201410588039 A CN 201410588039A CN 104269242 A CN104269242 A CN 104269242A
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- 239000011162 core material Substances 0.000 claims description 88
- 238000004804 winding Methods 0.000 claims description 34
- 239000004020 conductor Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000002356 single layer Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron aluminum silicon Chemical compound 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
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Abstract
The invention relates to an arc-shaped vertically-wound inductor which comprises an annular magnetic core and coils, wherein the annular magnetic core consists of at least two magnetic core sections; the coils are wound on the annular magnetic core in a single layer; the cross section of the annular magnetic core in the radial direction is square; each circle of the coils is a square matched with the annular magnetic core; the width of one side, positioned on the inner side of the annular magnetic core, of each circle of the coils, in the circumference direction is smaller than that of one side, positioned on the outer side of the annular magnetic core, of each circle of the coils in the circumference direction.
Description
Technical field
The present invention relates to a kind of inductor, especially relate to a kind of arc vertical winding type inductor.
Background technology
In order to effectively improve the electromagnetic interference that stray field in high-frequency inductor closed magnetic circuit produces, and the eddy current loss that winding conductor is formed because of stray field, it is gimmick the most frequently used in inductor design that coiling is wound on toroidal core uniformly.Coiling on closed magnet ring, by the impact of technique for coiling, can only adopt round conductor to carry out coiling.In addition, in order to obtain the high inductance under big current as much as possible, have to adopt the parallel connection of multiply circular copper wire, sandwich wound on magnet ring, and as much as possible around the endoporus of full filling magnet ring.By the inductance of such coiling, there is shortcoming below:
1) for realize large cross-sectional area of conductor adopt multiply and around, increase coiling difficulty, time-consuming, processing cost is high;
2) adopt sandwich wound, the parasitic stray capacitance of winding must be made to strengthen, bring the very large spike burr of current waveform, increase the weight of EMI interference;
3) the intensive lamination coiling of circular copper wire, makes total contact area of conductor and extraneous air diminish, and surrounds magnetic core, affect inductance radiating effect;
4) for the product that magnetic ring inner hole coiling fill-in ratio is high, be difficult to realize Automated winding, affect the quality control of product.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of arc vertical winding type inductor, and its radiating effect improves, and can improve EMC (Electro Magnetic Compatibility, the Electro Magnetic Compatibility) effect of circuit.
The present invention be solve the problems of the technologies described above the technical scheme adopted be propose a kind of individual layer vertical winding type inductor, comprise toroidal core and coil, wherein this toroidal core is combined by least two magnetic core sections, this coil individual layer is wound on this toroidal core, wherein this toroidal core cross section is radially square, and each circle of this coil is coordinate with this toroidal core square, each circle of this coil is positioned at the width of the side inside this toroidal core at circumferencial direction, is less than and is positioned at the width of the side outside this toroidal core at circumferencial direction.
In one embodiment of this invention, this toroidal core is annular.
In one embodiment of this invention, this toroidal core is track type.
In one embodiment of this invention, the outer peripheral face of this toroidal core is close in the inner side of each circle of this coil.
In one embodiment of this invention, the inner side of each circle of this coil and the distance of two circumferential lateral surface of this toroidal core are no more than 25% of magnetic core radial thickness, and are no more than 25% of toroidal core axial width with the outer surface of this toroidal core and the distance of bottom surface.
In one embodiment of this invention, this coil is formed by sub-thread or stranded conductor coiling.
In one embodiment of this invention, this coil one or more is comprised.
In one embodiment of this invention, the joint face place of each magnetic core section of this toroidal core is provided with non-magnetic air gap.
In one embodiment of this invention, each magnetic core section of this toroidal core is made up of same core material.
In one embodiment of this invention, each magnetic core section of this toroidal core is made up of different core material respectively.
The present invention is owing to adopting above technical scheme, make it compared with prior art, individual layer stands after inductor forms the wire coiling of coil, and adjacent wires turn-to-turn is single linear contact lay or point cantact, the parasitic capacitance that winding is formed is the series connection of all numbers of turn, and EMC effect is greatly improved; Further, coil adopt specific profiled square wire vertical around, wire can be close to magnetic core, and for specific magnet ring cross section, the single turn girth of winding is the shortest, and reduce winding internal resistance, decrease copper consumption, cost is low; Moreover owing to have employed, profiled square wire is vertical to be found coiling than the rectangle of routine can promote the number of turn around coiling, thus promotes inductance value; Last individual layer founds the structure of coiling, all surface of wire is directly contacted with air, is very beneficial to heat radiation, reduce temperature rise, therefore for the application of identical power, the design of the current density of higher wire can be adopted, the number of turns of inductance is improved further; And the coil design of individual layer, completely eliminate the high frequency approach effect in coil, reduce the loss of inductance.
Accompanying drawing explanation
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 illustrates the stereogram of the individual layer vertical winding type inductor structure of one embodiment of the invention.
Fig. 2 illustrates the vertical view of the individual layer vertical winding type inductor structure of one embodiment of the invention.
Fig. 3 illustrates the toroidal core of the inductor of one embodiment of the invention.
Fig. 4 illustrates the coil scheme of installation of the inductor of one embodiment of the invention.
Fig. 5 A-5C illustrates the winding wire shape of one embodiment of the invention.
Fig. 6 is the Local map of Fig. 2, and it illustrates the vertical view of winding wire.
With the distance of magnetic core inside the coil that Fig. 7 illustrates one embodiment of the invention.
Fig. 8 A and 8B illustrates the toroidal core of the inductor of another embodiment of the present invention.
Embodiment
Fig. 1 illustrates the stereogram of the individual layer vertical winding type inductor structure of one embodiment of the invention.Fig. 2 illustrates the vertical view of the individual layer vertical winding type inductor structure of one embodiment of the invention.Shown in figure 1 and Fig. 2, the individual layer vertical winding type inductor 10 of the present embodiment, comprise toroidal core 20 and coil 30, coil 20 is wound on toroidal core 30.More particularly, coil 20 is wound on toroidal core 30 by wire individual layer.Fig. 3 illustrates the toroidal core of the inductor of one embodiment of the invention, and it is annular.Shown in figure 3, in the present embodiment, toroidal core 20 can be combined by least two (shown in figure 2) magnetic core sections 21,22.For example, between the end face of magnetic core section 21,22, combination can be completed with the process of viscose glue gluing.Coil 30 first coiling can specify well the air core coil of the number of turn, then before magnetic core section 21,22 combines, is wound in one of them magnetic core section (as 21) in mode shown in Fig. 4.
Shown in figure 4, in the present embodiment, toroidal core 20 section A is radially square.Accordingly, each circle 31 of coil 30 is also coordinate with toroidal core 20 square.
The conductor cross-section of coil is rectangle substantially.Further, shown in figure 5A-5C and Fig. 6, each circle 31 of coil 30 is positioned at the width w1 of the side 31a inside toroidal core at circumferencial direction, is less than and is positioned at the width w2 of the side 31b outside toroidal core at circumferencial direction.The benefit of this design is the coil turn after can promoting assembling as much as possible.In fig. 5, each circle 31 cross section at 31a place, this side with arc.In figure 5b, the cross section of each circle 31 is straight line at 31a place, this side.In figure 5 c, the cross section of each circle 31 is smoothly transitted in the middle part of cross section with arc at 31a place, this side.
With the distance of magnetic core inside the coil that Fig. 7 illustrates one embodiment of the invention.Shown in figure 7, each circle inner side of 31 of coil 30 and the distance d1 of two circumferential lateral surface 23,24 of toroidal core 20, d2 is no more than 25% of magnetic core radial thickness a, and the distance d3 of each circle inner side of 31 and the outer surface 25 of toroidal core 20 and bottom surface 26, d4 is also no more than 25% of toroidal core axial width b.That is:
max(d1,d2)＜a×25％；
max(d3,d4)＜b×25％。
In another embodiment, each circle 31 can be close to toroidal core 20.For specific magnet ring cross section, the single turn girth of coil is the shortest, and reduce Coil resistance, decrease copper consumption, cost is low.
Embodiment above illustrates that toroidal core 20 is for annular, and in another embodiment shown in Fig. 8 A and Fig. 8 B, this toroidal core is track type.The track-shaped magnetic core of Fig. 8 A is two U-shaped magnetic core section splicings, and the track-shaped magnetic core of Fig. 8 B is spliced by two U-shaped magnetic core sections and two I shape magnetic core sections.
In the various embodiments of the invention, coil 30 can be formed by sub-thread or stranded conductor coiling, the winding method that wire adopts be vertical around.Stranded conductor be adopt and simultaneous around mode.
For the ease of assembling, the coil of the embodiment of the present invention is not limited to single, can be that two or multiple winding are assembled on a toroidal core closing combination simultaneously; Each winding can carry out various electrically on the connection combination of series, parallel etc., the coupling inductance forming single inductance or multiple winding uses.
For the ease of the optimization on assembling and magnetic air gap, the magnetic joint face of the magnetic core section of the embodiment of the present invention, be not limited to magnetic core outside the vertical plane of normal direction, can be the contact of various forms of male and fomale(M&F).
The toroidal core of various embodiments of the present invention can be soft magnetic material, such as silicon steel material, amorphous and nano amorphous thin-belt type material, various metal soft magnetic powder core (iron powder type, iron silica flour core, iron aluminum silicon powder type etc.), amorphous and nano amorphous powder core material etc.Toroidal core both can be the combination of homogenous material, also can be that the hybrid combining of two or more materials uses.
The individual layer of the embodiment of the present invention is vertical around inductor, and after forming the wire coiling of coil, adjacent wires turn-to-turn is single linear contact lay or point cantact, and the parasitic capacitance that winding is formed is the series connection of all numbers of turn, and EMC effect is greatly improved; Further, coil adopt specific profiled square wire vertical around, wire can be close to magnetic core, and for specific magnet ring cross section, the single turn girth of winding is the shortest, and reduce winding internal resistance, decrease copper consumption, cost is low; Moreover vertical around coiling owing to have employed profiled square wire, found than the rectangle of routine the number of turn that coiling can promote at least 10-20%, therefore inductance value at least can promote more than 20-40%; Last individual layer founds the structure of coiling, all surface of wire is directly contacted with air, is very beneficial to heat radiation, reduce temperature rise, therefore for the application of identical power, the design of the current density of higher wire can be adopted, the number of turns of inductance is improved further; And the coil design of individual layer, completely eliminate the high frequency approach effect in coil, reduce the loss of inductance.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little amendment and perfect, therefore protection scope of the present invention is when being as the criterion of defining with claims.
Claims (10)
1. an individual layer vertical winding type inductor, comprise toroidal core and coil, wherein this toroidal core is combined by least two magnetic core sections, this coil individual layer is wound on this toroidal core, wherein this toroidal core cross section is radially square, and each circle of this coil is coordinate with this toroidal core square, each circle of this coil is positioned at the width of the side inside this toroidal core at circumferencial direction, is less than and is positioned at the width of the side outside this toroidal core at circumferencial direction.
2. individual layer vertical winding type inductor as claimed in claim 1, it is characterized in that, this toroidal core is annular.
3. individual layer vertical winding type inductor as claimed in claim 1, it is characterized in that, this toroidal core is track type.
4. individual layer vertical winding type inductor as claimed in claim 1, is characterized in that, the outer peripheral face of this toroidal core is close in the inner side of each circle of this coil.
5. individual layer vertical winding type inductor as claimed in claim 1, it is characterized in that, the inner side of each circle of this coil and the distance of two circumferential lateral surface of this toroidal core are no more than 25% of magnetic core radial thickness, and are no more than 25% of toroidal core axial width with the outer surface of this toroidal core and the distance of bottom surface.
6. individual layer vertical winding type inductor as claimed in claim 1, it is characterized in that, this coil is formed by sub-thread or stranded conductor coiling.
7. individual layer vertical winding type inductor as claimed in claim 1, is characterized in that, comprise this coil one or more.
8. individual layer vertical winding type inductor as claimed in claim 1, it is characterized in that, the joint face place of each magnetic core section of this toroidal core is provided with non-magnetic air gap.
9. individual layer vertical winding type inductor as claimed in claim 1, it is characterized in that, each magnetic core section of this toroidal core is made up of same core material.
10. individual layer vertical winding type inductor as claimed in claim 1, it is characterized in that, each magnetic core section of this toroidal core is made up of different core material respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410588039.XA CN104269242A (en) | 2014-10-28 | 2014-10-28 | Arc-shaped vertically-wound inductor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410588039.XA CN104269242A (en) | 2014-10-28 | 2014-10-28 | Arc-shaped vertically-wound inductor |
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| Publication Number | Publication Date |
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| CN104269242A true CN104269242A (en) | 2015-01-07 |
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| CN201410588039.XA Pending CN104269242A (en) | 2014-10-28 | 2014-10-28 | Arc-shaped vertically-wound inductor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105825998A (en) * | 2016-06-01 | 2016-08-03 | 湖口健诚电子电器有限公司 | Annular differential-mode inductor and production method thereof |
| CN105869733A (en) * | 2016-04-01 | 2016-08-17 | 深圳市京泉华科技股份有限公司 | Wire, inductor using wire and electronic apparatus using inductor |
| CN108305743A (en) * | 2018-04-17 | 2018-07-20 | 深圳市沐磁科技有限公司 | A kind of flat wire is vertical around inductance coil and vertical around inductor |
| CN108428501A (en) * | 2018-04-02 | 2018-08-21 | 佳腾电业（赣州）有限公司 | A kind of tiltedly flat enameled wire |
| CN109686539A (en) * | 2019-02-15 | 2019-04-26 | 佛山市顺德区伊戈尔电力科技有限公司 | A kind of inductor |
| CN112397289A (en) * | 2019-11-15 | 2021-02-23 | 复旦大学 | Novel MEMS high-Q-value non-solenoid integrated inductor and preparation method thereof |
| TWI815227B (en) * | 2020-12-04 | 2023-09-11 | 大陸商橫店集團東磁股份有限公司 | Integrated co-fired inductor and preparation method threrof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11329866A (en) * | 1998-05-08 | 1999-11-30 | Alps Electric Co Ltd | Cored coil and manufacture thereof |
| JP2001085233A (en) * | 1999-09-10 | 2001-03-30 | Concorde Denshi Kogyo:Kk | Semi-closed magnetic path inductor and its manufacture |
| JP2010147199A (en) * | 2008-12-18 | 2010-07-01 | Totoku Electric Co Ltd | Braided-wire toroidal coil |
| CN103854832A (en) * | 2012-12-05 | 2014-06-11 | 胜美达集团株式会社 | Winding structure, coil winding, coil part, and coil winding manufacturing method |
-
2014
- 2014-10-28 CN CN201410588039.XA patent/CN104269242A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11329866A (en) * | 1998-05-08 | 1999-11-30 | Alps Electric Co Ltd | Cored coil and manufacture thereof |
| JP2001085233A (en) * | 1999-09-10 | 2001-03-30 | Concorde Denshi Kogyo:Kk | Semi-closed magnetic path inductor and its manufacture |
| JP2010147199A (en) * | 2008-12-18 | 2010-07-01 | Totoku Electric Co Ltd | Braided-wire toroidal coil |
| CN103854832A (en) * | 2012-12-05 | 2014-06-11 | 胜美达集团株式会社 | Winding structure, coil winding, coil part, and coil winding manufacturing method |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869733A (en) * | 2016-04-01 | 2016-08-17 | 深圳市京泉华科技股份有限公司 | Wire, inductor using wire and electronic apparatus using inductor |
| CN105869733B (en) * | 2016-04-01 | 2017-12-01 | 深圳市京泉华科技股份有限公司 | Inductor and electronic installation |
| CN105825998A (en) * | 2016-06-01 | 2016-08-03 | 湖口健诚电子电器有限公司 | Annular differential-mode inductor and production method thereof |
| CN108428501A (en) * | 2018-04-02 | 2018-08-21 | 佳腾电业（赣州）有限公司 | A kind of tiltedly flat enameled wire |
| CN108305743A (en) * | 2018-04-17 | 2018-07-20 | 深圳市沐磁科技有限公司 | A kind of flat wire is vertical around inductance coil and vertical around inductor |
| WO2019200897A1 (en) * | 2018-04-17 | 2019-10-24 | 深圳市伊戈尔沐磁科技有限公司 | Flat-wire vertical winding inductance coil and vertical winding inductor |
| CN109686539A (en) * | 2019-02-15 | 2019-04-26 | 佛山市顺德区伊戈尔电力科技有限公司 | A kind of inductor |
| CN112397289A (en) * | 2019-11-15 | 2021-02-23 | 复旦大学 | Novel MEMS high-Q-value non-solenoid integrated inductor and preparation method thereof |
| TWI815227B (en) * | 2020-12-04 | 2023-09-11 | 大陸商橫店集團東磁股份有限公司 | Integrated co-fired inductor and preparation method threrof |
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Application publication date: 20150107 |