CN207068606U - A kind of butterfly winding structure of filter inductance - Google Patents
A kind of butterfly winding structure of filter inductance Download PDFInfo
- Publication number
- CN207068606U CN207068606U CN201720829476.5U CN201720829476U CN207068606U CN 207068606 U CN207068606 U CN 207068606U CN 201720829476 U CN201720829476 U CN 201720829476U CN 207068606 U CN207068606 U CN 207068606U
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- winding
- filter inductance
- butterfly
- toroidal core
- winding structure
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Abstract
The utility model discloses a kind of butterfly winding structure of filter inductance, it is related to filter inductance technical field.The butterfly winding structure of the filter inductance, including toroidal core and winding, the external annular surface of the toroidal core is uniformly distributed four trapezoidal groovings, the trapezoidal grooving keeps apart the first winding and the second winding, reduce the influence of parasitic capacitance and distribution capacity to filter inductance between the first winding and the second winding, loss is reduced, improves the efficiency of Switching Power Supply；Winding is uniformly distributed by the trapezoidal grooving so that coiling is not easy to loosen, and is evenly distributed；Butterfly winding structure of the present utility model enables filter inductance preferably suppression electromagnetic interference signal；The utility model can reduce the influence between adjacent layer in multilayer winding mode by the way of single-layer winding, so as to reduce the influence of parasitic capacitance and distribution capacity to filter inductance between adjacent layer.
Description
Technical field
The utility model belongs to filter inductance technical field, more particularly to a kind of butterfly winding structure of filter inductance.
Background technology
With the high speed development of electronics and IT products, higher and higher requirement is proposed to the Switching Power Supply supplied power for.
High efficiency, high power density, high reliability turn into Switching Power Supply development trend, and wherein high efficiency be improve power density and
One key factor of reliability.
The development of semiconductor devices is always the power of modular power source development, and it has pushed directly on the efficiency of modular power source
Improve.And the relatively stable stage has been arrived in the development of semiconductor, what the performance of silicon semiconductor switching device further improved
Space is relatively small, no longer so obvious to put forward efficient effect by switching device is changed in traditional design.Switching
In power supply, output inductor has the important function of energy storage and smothing filtering output voltage.The size of output inductor is not only
It is related to the current peak and virtual value of switching device, is also relate to the loss related to current peak and virtual value.Output filter
Ripple inductance in itself in manufacturing process also can parasitic larger parasitic capacitance and distribution capacity, these parasitic parameters can increase switch
The excess loss of power supply, reduce the efficiency of Switching Power Supply.
In Switching Power Supply, filter inductance is also used for filter electromagnetic interference signal, passes through the suppression to electromagnetic interference signal
System, improve circuit electrical characteristic.Traditional solution for electromagnetic interference problem is to use Sofe Switch, absorption, shielding, with
And PCB layout etc. is improved, in addition, wire winding is also very important to suppression electromagnetic interference signal.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of butterfly winding structure of filter inductance.
The utility model is that solve above-mentioned technical problem by the following technical solutions：A kind of butterfly of filter inductance
Winding structure, including toroidal core and winding, the winding include the first winding and the second winding；In the outer of the toroidal core
It is trapezoidal grooving that ring surface is uniformly distributed four sections along longitudinal direction；Coiling phase is distinguished on two trapezoidal groovings on symmetrical both sides
With the first winding and the second winding of the number of turn, formed between first winding and the second winding at two sections of isolation；Described first
Winding and the second winding are started to both sides respectively around the circle of the identical number of turn from centre respectively, form butterfly winding structure；It is described trapezoidal
Grooving keeps apart the first winding and the second winding, reduces parasitic capacitance and distribution capacity between the first winding and the second winding
Influence to filter inductance；Winding is uniformly distributed by the trapezoidal grooving so that coiling is not easy to loosen, and is evenly distributed；Butterfly around
Structure processed enables filter inductance preferably suppression electromagnetic interference signal.
Further, first winding and the second winding are started to both sides respectively around 10 circles from centre respectively, using individual layer
The mode of coiling, the influence between adjacent layer in multilayer winding mode can be reduced, so as to reduce the parasitism electricity between adjacent layer
Hold and influence of the distribution capacity to filter inductance.
Further, first winding and the second winding are uniformly wound on the toroidal core using flat type copper wire is vertical respectively
On, to reduce the parasitic capacitance and distribution capacity between circle and circle, increasing heat radiation area, reduce temperature rise.
Further, the butterfly winding structure of the filter inductance also includes a baffle plate, and the section of the baffle plate is
" mountain " font, two downward opening necks are provided with the baffle plate；The distance between described two necks with described two sections
Distance between isolation is adapted；Two downward opening necks of the baffle plate are respectively perpendicular to plane where toroidal core
Direction be plugged at two sections of isolation on toroidal core, and with toroidal core be interference fitted；The baffle plate is by toroidal core
Inner ring is divided into two parts, and the first winding and the second winding are further isolated, and improves impedance and the inductance of filter inductance
Amount, further reduce the influence of parasitic capacitance and distribution capacity to filter capacitor between the first winding and the second winding.
Further, the main material of the toroidal core is Ni-Zn soft magnetic ferrite.
Further, the main material of the toroidal core is NXO-100.
Further, the external annular surface of the toroidal core and upper and lower surface coating methyl silicon resin layer, its inner ring surface
Coat silicone resin coating.
Further, the thickness of the methyl silicon resin layer is 0.9mm, and the thickness of silicone resin coating is 0.6mm, with
Reduce influence of the parasitic capacitance between winding and toroidal core to filter inductance.
Compared with prior art, the butterfly winding structure of filter inductance provided by the utility model, including toroidal core
And winding, the external annular surface of the toroidal core are uniformly distributed four trapezoidal groovings, the trapezoidal grooving is by the first winding and
Two windings are kept apart, and reduce influence of the parasitic capacitance and distribution capacity between the first winding and the second winding to filter inductance,
Loss is reduced, improves the efficiency of Switching Power Supply；Winding is uniformly distributed by the trapezoidal grooving so that coiling is not easy to loosen, distribution
Uniformly；Butterfly winding structure of the present utility model enables filter inductance preferably suppression electromagnetic interference signal；The utility model
By the way of single-layer winding, the influence between adjacent layer in multilayer winding mode can be reduced, so as to reduce between adjacent layer
The influence to filter inductance of parasitic capacitance and distribution capacity；The utility model also includes baffle plate, and the baffle plate is by the first winding
Further isolate with the second winding, improve impedance and the inductance value of filter inductance, further reduce the first winding and the second winding
Between the influence to filter capacitor of parasitic capacitance and distribution capacity；The utility model is simple in construction, low manufacture cost, from each side
Face reduces influence of the parasitic parameter to Switching Power Supply, reduces loss, improves the efficiency of Switching Power Supply.
Brief description of the drawings
It is required in being described below to embodiment to use in order to illustrate more clearly of the technical solution of the utility model
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only one embodiment of the present utility model, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of schematic diagram of the butterfly winding structure of filter inductance of the utility model；
Fig. 2 is the schematic diagram of the equally distributed trapezoidal grooving of the utility model toroidal core external annular surface；
Fig. 3 is the schematic diagram that the utility model baffle plate is plugged at two sections of isolation of toroidal core；
Fig. 4 is the structural representation of the utility model baffle plate；
Wherein：1- toroidal cores, 2- windings, 3- groovings, 4- baffle plates, 5- necks, at 6- isolation.
Embodiment
With reference to the accompanying drawing in the utility model embodiment, technical scheme of this implementation in new is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole embodiments.
Based on the embodiment in the utility model, those of ordinary skill in the art are obtained on the premise of creative work is not made
Every other embodiment, belong to the utility model protection scope.
As depicted in figs. 1 and 2, the butterfly winding structure of filter inductance provided by the utility model, including toroidal core 1
With winding 2, winding 2 includes the first winding and the second winding；Four are uniformly distributed in the external annular surface of toroidal core 1 along longitudinal direction to cut
Face is trapezoidal grooving 3；On two trapezoidal groovings 3 on symmetrical both sides distinguish the identical number of turn of coiling the first winding and second around
Group, formed between the first winding and the second winding 5 at two sections of isolation；First winding and the second winding are started to two from centre respectively
Side respectively around the circle of the identical number of turn, forms butterfly winding structure, and the specific number of turn of winding can determine according to required inductance value；It is trapezoidal
Grooving 3 keeps apart the first winding and the second winding, reduces parasitic capacitance and distribution electricity between the first winding and the second winding
Hold the influence to filter inductance；Winding 2 is uniformly distributed by trapezoidal grooving 3 so that coiling is not easy to loosen, and is evenly distributed；Butterfly around
Structure processed enables filter inductance preferably suppression electromagnetic interference signal.
First winding and the second winding are started to both sides respectively around 10 circles from centre respectively, can by the way of single-layer winding
Influence between adjacent layer in reducing in a manner of multilayer winding, so as to reduce the parasitic capacitance and distribution capacity pair between adjacent layer
The influence of filter inductance.
First winding and the second winding are uniformly wound on toroidal core 1 using flat type copper wire is vertical respectively, with reduce circle and circle it
Between parasitic capacitance and distribution capacity, increasing heat radiation area, reduce temperature rise.
As shown in figure 3, the butterfly winding structure of filter inductance also includes a baffle plate 4, the section of baffle plate 4 is " mountain " word
Shape, two downward opening necks 5 are provided with baffle plate 4；The distance between two necks 5 with two sections isolate between place 5 away from
From adaptable；The direction that two downward opening necks 5 of baffle plate 4 are respectively perpendicular to the place plane of toroidal core 1 is plugged on ring
5 at two sections of isolation on shape magnetic core 1, and it is interference fitted with toroidal core 1；The inner ring of toroidal core 1 is divided into two by baffle plate 4
Point, and the first winding and the second winding are further isolated, improve impedance and the inductance value of filter inductance, further reduce by the
The influence of parasitic capacitance and distribution capacity to filter capacitor between one winding and the second winding.
The main material of toroidal core 1 is Ni-Zn soft magnetic ferrite NXO-100, and the material is a kind of feature magnetic material
Material, formed, can used under circumstances by ceramic process sintering, covering frequence is wide, and Saturation magnetic sense intensity is high, power attenuation
It is low, it is preferable perceptual magnetic media material.
External annular surface and upper and lower surface the coating methyl silicon resin layer of toroidal core 1, its inner ring surface coating organosilicon tree
Fat coating；The thickness of methyl silicon resin layer is 0.9mm, and the thickness of silicone resin coating is 0.6mm, to reduce winding 2 and ring
Influence of the parasitic capacitance to filter inductance between shape magnetic core 1.
Above disclosed is only specific embodiment of the present utility model, but the scope of protection of the utility model not office
It is limited to this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Change or modification, should all cover within the scope of protection of the utility model.
Claims (8)
- A kind of 1. butterfly winding structure of filter inductance, it is characterised in that：Including toroidal core（1）And winding（2）, the winding （2）Including the first winding and the second winding；In the toroidal core（1）External annular surface be uniformly distributed four sections along longitudinal direction and be Trapezoidal grooving（3）；Two trapezoidal groovings on symmetrical both sides（3）Upper first winding of the identical number of turn of coiling respectively and second around Group, formed between first winding and the second winding at two sections of isolation（6）；First winding and the second winding difference is therefrom Between start to both sides respectively around the circle of the identical number of turn, form butterfly winding structure.
- 2. the butterfly winding structure of filter inductance as claimed in claim 1, it is characterised in that：First winding and second around Group is started to both sides respectively around 10 circles from centre respectively.
- 3. the butterfly winding structure of filter inductance as claimed in claim 2, it is characterised in that：First winding and second around Group is uniformly wound on the toroidal core using flat type copper wire is vertical respectively（1）On.
- 4. the butterfly winding structure of filter inductance as claimed in claim 1, it is characterised in that：Also include a baffle plate（4）, institute State baffle plate（4）Section for fall " mountain " font, in the baffle plate（4）It is provided with two downward opening necks（5）；It is described two Neck（5）The distance between isolate place with described two sections（6）The distance between be adapted；The baffle plate（4）Two opening courts Under neck（5）It is respectively perpendicular to toroidal core（1）The direction of place plane is plugged on toroidal core（1）On two sections of isolation at （6）, and and toroidal core（1）Interference fit.
- 5. the butterfly winding structure of filter inductance as claimed in claim 1, it is characterised in that：The toroidal core（1）Master Body material is Ni-Zn soft magnetic ferrite.
- 6. the butterfly winding structure of filter inductance as claimed in claim 1, it is characterised in that：The toroidal core（1）Master Body material is NXO-100.
- 7. the butterfly winding structure of any filter inductance as described in claim 1 to 6, it is characterised in that：The toroidal core （1）External annular surface and upper and lower surface coating methyl silicon resin layer, its inner ring surface coating silicone resin coating.
- 8. the butterfly winding structure of filter inductance as claimed in claim 7, it is characterised in that：The thickness of the methyl silicon resin layer Spend for 0.9mm, the thickness of silicone resin coating is 0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720829476.5U CN207068606U (en) | 2017-07-10 | 2017-07-10 | A kind of butterfly winding structure of filter inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720829476.5U CN207068606U (en) | 2017-07-10 | 2017-07-10 | A kind of butterfly winding structure of filter inductance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207068606U true CN207068606U (en) | 2018-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720829476.5U Expired - Fee Related CN207068606U (en) | 2017-07-10 | 2017-07-10 | A kind of butterfly winding structure of filter inductance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207068606U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335866A (en) * | 2018-04-26 | 2018-07-27 | 临安和顺磁通电子有限公司 | Day I magnetic cores and its processing technology |
| CN109243814A (en) * | 2018-10-11 | 2019-01-18 | 珠海市科瑞思机械科技有限公司 | A kind of butterfly winding inductance coil winding machine |
-
2017
- 2017-07-10 CN CN201720829476.5U patent/CN207068606U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335866A (en) * | 2018-04-26 | 2018-07-27 | 临安和顺磁通电子有限公司 | Day I magnetic cores and its processing technology |
| CN109243814A (en) * | 2018-10-11 | 2019-01-18 | 珠海市科瑞思机械科技有限公司 | A kind of butterfly winding inductance coil winding machine |
| CN109243814B (en) * | 2018-10-11 | 2023-09-12 | 珠海市科瑞思机械科技有限公司 | Butterfly winding method inductance winding machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 Termination date: 20180710 |
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| CF01 | Termination of patent right due to non-payment of annual fee |