CN106981347A - Inductance device with common mode differential mode inductance function - Google Patents
Inductance device with common mode differential mode inductance function Download PDFInfo
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- CN106981347A CN106981347A CN201610025102.8A CN201610025102A CN106981347A CN 106981347 A CN106981347 A CN 106981347A CN 201610025102 A CN201610025102 A CN 201610025102A CN 106981347 A CN106981347 A CN 106981347A
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- inductance
- winding section
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- winding
- framework
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- 238000004804 winding Methods 0.000 claims abstract description 124
- 230000006698 induction Effects 0.000 claims abstract description 9
- 239000000696 magnetic material Substances 0.000 claims abstract description 7
- 230000035699 permeability Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 9
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2871—Pancake coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
- H01F2017/046—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core helical coil made of flat wire, e.g. with smaller extension of wire cross section in the direction of the longitudinal axis
Abstract
A kind of inductance device with common mode differential mode inductance function, comprising：Inductance framework, with the first winding section, the second winding section and by the first winding section and the circular accommodating area in the second winding section；First coil, is wound in the first winding section；Second coil, reverse-winding has common mode inductance function in the second winding section；And conducting magnetic component, for magnetic material, conducting magnetic component is engaged in the inner edge of inductance framework to be arranged in accommodating area with ends, and conducting magnetic component every between first coil and the second coil so as to first coil and the second coil being respectively magnetic induction, and with differential mode inductance function, by said structure, inductance device of the invention has common mode and the function of differential mode inductance simultaneously.
Description
Technical field
The present invention relates to a kind of inductor, more particularly to a kind of inductance device with common mode differential mode inductance function.
Background technology
With the progress of science and technology, direction of the electronic product gradually toward miniaturization is developed so that the component density in electronic product is improved,
And easily influenceed by electromagnetic interference (electromagnetic interference, EMI), it is general often using inductor so that EMI to be filtered out.
Specifically, the conduction type EMI circulated in circuit can be broken down into common-mode noise and two components of differential mode noise, and prior art is
Common-mode noise is eliminated using common-mode inductor (common mode choke, CMC), and using differential mode inductors (differential
Mode choke, DMC) eliminate differential mode noise.But the common-mode inductor of circuit and space occupied by differential mode inductors are not
Beneficial to the miniaturization of electronic product, it is therefore necessary to propose a kind of inductance device, common-mode noise and the function of differential mode noise can be eliminated
And volume is smaller.
The content of the invention
Therefore, the purpose of the present invention is providing a kind of inductance device, using the teaching of the invention it is possible to provide common mode differential mode inductance function and volume is smaller.
The present invention is to provide a kind of electricity with common mode differential mode inductance function to solve the technological means that problem of the prior art is used
Induction device, comprising：Inductance framework, with the first winding section, the second winding section and by the first described winding section and described the
The circular accommodating area in two winding sections, the first described winding section and the second described winding section are symmetricly set in described accommodating area
Both sides, described the first winding section has the first winding section front surface and the first winding section back surface, the second described winding section
With the second winding section front surface and the second winding section back surface, the first described winding section front surface and the second described winding section
Front surface towards first direction, described the first winding section back surface with the second described winding section back surface towards second direction,
And described first direction and described second direction are opposite direction；First coil, with the first winding upper end and first around
Group bottom, the first described winding upper-end part of driving is under the outside of the first described winding section front surface, the first described winding
End is located at the outside of the first described winding section back surface；Second coil, with the second winding upper end and the second winding lower end
Portion, the second described winding upper-end part of driving is in the outside of the second described winding section front surface, the second described winding lower end part
In the outside of the second described winding section back surface；And a conducting magnetic component, it is magnetic material, described conducting magnetic component is with relative
Both ends engage or are interval in the inner edge of described inductance framework so as to be arranged in described accommodating area, and described conducting magnetic component
Every between described first coil and the second described coil so as to respectively with described first coil and the second described coil
For magnetic induction.
There is provided a kind of inductance device in one embodiment of this invention, the permeability and described inductance framework of described conducting magnetic component
Permeability to be different
There is provided a kind of inductance device in one embodiment of this invention, the permeability and described inductance framework of described conducting magnetic component
Permeability to be identical.
A kind of inductance device is provided in one embodiment of this invention, and described inductance framework is annular framework.
A kind of inductance device is provided in one embodiment of this invention, and described inductance framework is quadrangle framework.
A kind of inductance device is provided in one embodiment of this invention, and described conducting magnetic component gluing is engaged in described inductance framework
Inner edge.
A kind of inductance device, in addition to an overcoating component are provided in one embodiment of this invention, covered in described inductance framework
And/or described conducting magnetic component outer surface.
A kind of inductance device is provided in one embodiment of this invention, and described overcoating component is insulated paint and/or the framework of insulation.
A kind of inductance device is provided in one embodiment of this invention, the material of described conducting magnetic component is ferrite, iron sial,
Dilval.
A kind of inductance device is provided in one embodiment of this invention, and described first coil and the second described coil are flat wire
Circle, flatwise coil thickness is less than 2mm and/or width is less than 10mm.
The inductance device of the present invention is identical with the winding mode of existing common-mode inductor, so that with same with general common-mode inductor
Deng high-impedance behavior.Conducting magnetic component is magnetic material, and conducting magnetic component can be respectively mutual magnetic strength with first coil and the second coil
Should, first coil and the second coil-induced leakage inductance (leakage inductance) are improved, so that with good differential mode inductance
Function.Therefore, inductance device of the invention has common mode and the function of differential mode inductance simultaneously, and circuit need not additionally set differential mode electricity
Sensor makes the space that the cost and differential mode inductors of differential mode inductors take to eliminate differential mode noise so as to remove from.
Brief description of the drawings
Fig. 1 is stereogram of the display according to the inductance device of the first embodiment of the present invention；
Fig. 2 regards for the right side of display inductance device according to the second embodiment of the present invention, the three-face view of main view and left view；
The front view of partial inductance devices of the Fig. 3 for display according to the third embodiment of the invention；
The front view of partial inductance devices of the Fig. 4 for display according to the fourth embodiment of the invention；
The front view of inductance devices of the Fig. 5 for display according to the fifth embodiment of the invention；
The front view of inductance devices of the Fig. 6 for display according to the sixth embodiment of the invention；
Fig. 7 a are for display according to the inductance device of the first embodiment of the present invention in the schematic diagram under EMI effects；
Fig. 7 b are for display according to the inductance device of the first embodiment of the present invention in the schematic diagram under common-mode noise effect；
Fig. 7 c are for display according to the inductance device of the first embodiment of the present invention in the schematic diagram under differential mode noise effect.
【Symbol description】
100 inductance devices
100a inductance devices
100b inductance devices
100c inductance devices
100d inductance devices
100e inductance devices
1st, 1a inductance framework
11 first winding sections
111 first winding section front surfaces
112 first winding section back surfaces
12 second winding sections
121 second winding section front surfaces
122 second winding section back surfaces
13 accommodating areas
2 first coils
21 first winding upper ends
22 first winding bottoms
3 second coils
31 second winding upper ends
32 second winding bottoms
4 conducting magnetic components
5 spacer members
6 overcoating components
D1 first directions
D2 second directions
I1, I2 noise current
Icm common mode noise currents
Idm differential mode noise electric currents
L leakage inductances
The P planes of symmetry
Φ magnetic fluxs
Embodiment
Illustrate embodiments of the present invention below according to Fig. 1 to Fig. 7 c.The explanation is not limitation embodiments of the present invention, and
For one kind of embodiments of the invention.
As shown in figure 1, the inductance device 100 according to the first embodiment of the present invention, comprising：Inductance framework 1, with first around
Line portion 11, the second winding section 12 and by the circular accommodating area 13 in the first winding section 11 and the second winding section 12, the first coiling
The winding section 12 of portion 11 and second is symmetricly set in the both sides of accommodating area 13, and the first winding section 11 has the first winding section front surface
111 and the first winding section back surface 112, the second winding section 12 has the second winding section front surface 121 and the second winding section back of the body table
Face 122, the first winding section front surface 111 and the second winding section front surface 121 carry on the back table towards first direction D1, the first winding section
The winding section back surface 122 of face 112 and second is towards a second direction D2, and first direction D1 is opposite with second direction D2
Direction；First coil 2, with the first winding upper end 21 and the first winding bottom 22, the first winding upper end 21 is located at
The outside of first winding section front surface 111, the first winding bottom 22 is located at the outside of the first winding section back surface 112；Second
Coil 3, with the second winding upper end 31 and the second winding bottom 32, the second winding upper end 31 is located at the second winding section
The outside of front surface 121, the second winding bottom 32 is located at the outside of the second winding section back surface 122；And conducting magnetic component 4,
For magnetic material, conducting magnetic component 4 engages or is interval in the inner edge of inductance framework 1 to be arranged at accommodating area 13 with relative two ends
In, and conducting magnetic component 4 every between the coil 3 of first coil 2 and second so as to respectively with the coil 3 of first coil 2 and second
For magnetic induction.
As shown in figure 1, the inductance device 100 according to the first embodiment of the present invention, inductance framework 1 is magnetic material to be
The iron core of inductance device 100.Inductance framework 1 is in mirror with a plane of symmetry P of the first winding section 11 and the center of the second winding section 12
Penetrate symmetrical, the first winding section 11 and the second winding section surround square accommodating area 13.Wherein, inductance framework 1 is integrated
Framework.And in other embodiments, inductance framework 1 can be made up of the sub- framework of more than two.
In the present embodiment, inductance framework 1 is quadrangle framework.Certainly, the invention is not restricted to this, inductance framework 1 is except can
Think beyond quadrangle or with plane of symmetry P in the symmetrical other shapes of mirror, such as the inductance device 100e shown in Fig. 6
Inductance framework 1a be annular framework.
In the first embodiment, the first winding section front surface 111, the first winding section back surface 112, the second winding section front surface 121
And second winding section back surface 122 be all plane.In other embodiments, the first winding section front surface 111, the first coiling
Portion's back surface 112, the second winding section front surface 121 and the second winding section back surface 122 can also be curved surfaces.
As shown in Fig. 2 the inductance device 100a according to the second embodiment of the present invention, conducting magnetic component 4 is arranged at accommodating area 13
In and it is symmetrical in mirror with plane of symmetry P, conducting magnetic component 4 is square cylinder.Certainly, conducting magnetic component 4 can be flat board, cylinder
Or other are in the symmetrical other shapes of mirror with plane of symmetry P.
Wherein, the material of conducting magnetic component 4 is ferrite (ferrite), iron sial (Kool Mu), dilval (High Flux)
Or other ferromagnetism materials.Therefore, conducting magnetic component 4 respectively can with the coil 3 of first coil 2 and second be mutual magnetic induction so that
Improve leakage inductance.
As shown in figure 3, the inductance device 100b according to the third embodiment of the present invention, material and the inductance framework of conducting magnetic component 4
1 material is different, and the permeability of conducting magnetic component 4 is with the permeability of inductance framework 1 also to be different.Wherein, conducting magnetic component 4
Gluing is engaged in the inner edge of inductance framework 1.Certainly, in other embodiments, conducting magnetic component 4 can be engaged by gluing
In the inductance framework 1 for phase same material.In addition, conducting magnetic component 4 can be formed in one with inductance framework 1, also may be used
With as shown in Fig. 2 conducting magnetic component 4 and inductance framework 1 separately.
By adjusting the permeability of conducting magnetic component 4 and the permeability of inductance framework 1, conducting magnetic component 4 and first coil can be influenceed
2 and the second magnetic induction between coil 3, change inductance device 100b leakage inductance, and then change inductance device 100b difference
Mould inductance.
As shown in figure 4, the inductance device 100c according to the fourth embodiment of the present invention, between conducting magnetic component 4 and inductance framework 1
It is interval with the spacer member 5 of isolation material.
The distance between permeability and the inner edge of inductance framework 1 by adjusting conducting magnetic component 4, are namely adjusted in the present embodiment
The thickness of whole spacer member 5, can influence the magnetic induction between conducting magnetic component 4 and the coil 3 of first coil 2 and second, change electricity
Induction device 100c leakage inductance, and then change inductance device 100c differential mode inductance.
As shown in figure 5, the inductance device 100d according to the fifth embodiment of the present invention, in addition to an overcoating component 6, it is cladded with structure
Part 6 is the framework of isolation material, the complete outer surface for covering conducting magnetic component 4 and part cover inductance framework 1, to fix
Conducting magnetic component 4 and the relative position of inductance framework 1.Certainly, it can also be while completely covering in conducting magnetic component to be cladded with component 6
4 and the outer surface of inductance framework 1, inductance device 100b, 100c as shown in Figures 3 and 4.In other embodiments,
Overcoating component 6 can be collectively forming through surface formed by spray insulation paint, or by insulated paint and framework, be cladded with component 6
Can also be made up of the subframe of more than two and be easy to sectional shaping.
As shown in Fig. 2 the inductance device 100a according to the second embodiment of the present invention, first coil 2 is with the second coil 3 with right
Title face P is symmetricly set in the opposite side of accommodating area 13 in mirror.In the present embodiment, first coil 2 is all with the second coil 3
Flatwise coil, enamel-cover flat copper wire is wound, and lenticular wire can be more improved compared to round wires in almost very close to each other after winding
The service efficiency in space.The thickness of flatwise coil is less than 2mm and width is less than 10mm.Certainly, the line of first coil 2 and second
Circle 3 can also be the round wires in the lenticular wire or such as first embodiment of other length/width.First coil 2 and the number of turn phase of the second coil 3
Deng winding direction is opposite.Specifically, the first winding upper end 21 is that first coil 2 is wound with the first winding bottom 22
Opposite end in the first winding section 11, the second winding upper end 31 is that the second coil 3 is wound in the second winding bottom 32
The opposite end of second winding section 12.In the present embodiment, first coil 2 directly contacts the first winding section 11 and the second coil
3 directly contact the second winding section 12, first coil 2 from the first winding upper end 21 toward the first winding bottom 22 be counterclockwise
Direction is wound, and the second coil 3 is wound from the second winding upper end 31 toward the second winding bottom 32 for clockwise direction.Certainly,
In other embodiments, first coil 2 can also be wound clockwise, and the second coil 3 is counterclockwise winding.
As shown in Fig. 7 a to Fig. 7 c, conduction type EMI enters the noise current I1 of first coil 2 and enters the second coil 3
Noise current I2, common mode noise current Icm and differential mode noise electric current Idm two components can be distinguished into, wherein, common mode is made an uproar
Acoustoelectric current Icm=(I1+I2)/2, differential mode noise electric current Idm=(I1-I2)/2.
As shown in Figure 7b, the size for flowing through the common mode noise current Icm of the coil 3 of first coil 2 and second is identical and direction is identical.
Magnetic flux (magnetic flux) Φ of two common mode noise current Icm produced by inductance framework 1 are right for that can add up in the same direction
There is high impedance in common mode noise current Icm, so as to suppression common mode noise current Icm.Common mode noise current Icm flows through
One coil 2 and the second coil 3 are that reverse, reverse leakage inductance L can mutually offset so as to the leakage inductance L produced in conducting magnetic component 4
Pin is from without producing materially affect.The present invention inductance device 100 in the presence of common mode noise current Icm with it is existing common
The operation principles of mould inductor are substantially identical.
As shown in Figure 7 c, the size for flowing through the differential mode noise electric current Idm of the coil 3 of first coil 2 and second is identical, in the opposite direction.
Two differential mode noise electric current Idm are reverse in the magnetic flux Φ produced by inductance framework 1, and the leakage inductance produced in conducting magnetic component 4
L is in the same direction.Leakage inductance L in the same direction can add up, and have high impedance for differential mode noise electric current Idm, made an uproar so as to suppress differential mode
Acoustoelectric current Idm.
By said structure, inductance device 100 of the invention has the high-impedance behavior equal with general common-mode inductor.And lead
Magnetic component 4 is magnetic material, and conducting magnetic component 4 improves the leakage inductance that the coil 3 of first coil 2 and second senses, so that with good
Good differential mode inductance function.Therefore, inductance device 100 of the invention has common mode and a function of differential mode inductance simultaneously, circuit without
Must additionally set differential mode inductors eliminate differential mode noise, so as to remove from make differential mode inductors cost and differential mode inductors account for
Space.
Narration above and explanation are only the explanation of presently preferred embodiments of the present invention, and working as those skilled in the art can be according to institute
Define claims and above-mentioned explanation and make other modifications, but these modification should be for the present invention spirit and
In the interest field of the present invention.
Claims (10)
1. a kind of inductance device, it is characterised in that include：
Inductance framework, with the first winding section, the second winding section and by the first described winding section and the second described winding section institute
Circular accommodating area, the first described winding section and the second described winding section are symmetricly set in the both sides of described accommodating area, institute
The first winding section stated has the first winding section front surface and a first winding section back surface, described the second winding section have second around
Line portion front surface and the second winding section back surface, described the first winding section front surface and the second described winding section front surface towards
First direction, described the first winding section back surface and the second described winding section back surface are towards second direction, and described the
One direction is opposite direction with described second direction；
First coil, with the first winding upper end and the first winding bottom, the first described winding upper-end part of driving is in described
The outside of first winding section front surface, the first described winding lower end part is in the outside of the first described winding section back surface；
Second coil, with the second winding upper end and the second winding bottom, the second described winding upper-end part of driving is in described
The outside of second winding section front surface, the second described winding lower end part is in the outside of the second described winding section back surface；With
And
Conducting magnetic component, is magnetic material, and described conducting magnetic component is engaged or be interval in described inductance framework with ends
Inner edge and be arranged in described accommodating area, and described conducting magnetic component is every located at described first coil and the second described coil
Between so as to described first coil and the second described coil being respectively magnetic induction.
2. inductance device as claimed in claim 1, it is characterised in that the permeability of described conducting magnetic component and described inductance
The permeability of framework is different.
3. inductance device as claimed in claim 1, it is characterised in that the permeability of described conducting magnetic component and described inductance
The permeability of framework is identical.
4. inductance device as claimed in claim 1, it is characterised in that described inductance framework is annular framework.
5. inductance device as claimed in claim 1, it is characterised in that described inductance framework is quadrangle framework.
6. inductance device as claimed in claim 1, it is characterised in that described conducting magnetic component gluing is engaged in described inductance
The inner edge of framework.
7. inductance device as claimed in claim 1, it is characterised in that also including an overcoating component, cover in described inductance
Framework and/or described conducting magnetic component outer surface.
8. inductance device as claimed in claim 7, it is characterised in that described overcoating component is insulated paint and/or insulation
Framework.
9. inductance device as claimed in claim 1, it is characterised in that the material of described conducting magnetic component is ferrite, iron silicon
Aluminium or dilval.
10. inductance device as claimed in claim 1, it is characterised in that described first coil and the second described coil are
Flatwise coil, described flatwise coil thickness is less than 2mm and/or width is less than 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025102.8A CN106981347A (en) | 2016-01-15 | 2016-01-15 | Inductance device with common mode differential mode inductance function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025102.8A CN106981347A (en) | 2016-01-15 | 2016-01-15 | Inductance device with common mode differential mode inductance function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106981347A true CN106981347A (en) | 2017-07-25 |
Family
ID=59340264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610025102.8A Pending CN106981347A (en) | 2016-01-15 | 2016-01-15 | Inductance device with common mode differential mode inductance function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106981347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659129A (en) * | 2017-09-26 | 2018-02-02 | 安徽大学 | A kind of plate type common mode differential mode magnetic integrated filter |
-
2016
- 2016-01-15 CN CN201610025102.8A patent/CN106981347A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659129A (en) * | 2017-09-26 | 2018-02-02 | 安徽大学 | A kind of plate type common mode differential mode magnetic integrated filter |
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