CN207503796U - A kind of differential mode magnetic integrated inductor altogether - Google Patents
A kind of differential mode magnetic integrated inductor altogether Download PDFInfo
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- CN207503796U CN207503796U CN201721387834.8U CN201721387834U CN207503796U CN 207503796 U CN207503796 U CN 207503796U CN 201721387834 U CN201721387834 U CN 201721387834U CN 207503796 U CN207503796 U CN 207503796U
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- 238000004804 winding Methods 0.000 claims abstract description 47
- 238000004381 surface treatment Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims description 14
- 230000035699 permeability Effects 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 210000003298 dental enamel Anatomy 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000011162 core material Substances 0.000 description 68
- 238000005516 engineering process Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001629 suppression Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a kind of differential mode magnetic integrated inductors altogether, including winding and magnetic core, the magnetic core includes I types magnetic core and E-type magnetic core, the E-type magnetic core includes the left magnetic pole at connection magnetic core back respectively, middle magnetic pole and right magnetic pole, the upper end of the left magnetic pole connects the left end of the I types magnetic core, the upper end of the right magnetic pole connects the right end of the I types magnetic core, the side surface that the I types magnetic core is contacted with E-type magnetic core carries out mirror surface treatment, the left magnetic pole upper end of E-type magnetic core carries out mirror surface treatment with right magnetic pole upper end face, the winding includes being around in the left winding of the left magnetic pole and is around in the right winding of the right magnetic pole, there are air gaps for the upper end of the middle magnetic pole and the middle part of the I types magnetic core.Differential mode magnetic integrated inductor altogether provided by the utility model has the characteristics that magnetic core and coil materials are few, common mode inductance value is big, differential mode inductance inductance value is adjustable and anti-saturation ability is excellent, manufacturing process is simple, easily implements in engineering.
Description
Technical field
The utility model belongs to magnetic cell integrated technology field, and in particular to a kind of common mode differential mode integrated inductor.
Background technology
In order to meet the EMC of power electronic equipment requirements, generally require and set using input filter to improve power electronics
Standby EMI performances.Traditional electromagnetic interface filter generally includes common mode inductance, differential mode inductance.Single-phase common mode inductance, usually there are four
Wire connection terminal interferes to suppression common mode；Differential mode inductance, usually only there are two wire connection terminal, to inhibit DM EMI.Filtering
A common mode inductance and a differential mode inductance are usually required in device, respectively to suppression common mode interference and DM EMI.Two kinds of electricity
Sense is mutual indepedent, function is single, and there are the shortcomings of occupied space is big, totle drilling cost is high, weight is heavy, total losses are big, it is difficult to meet not
Carry out the demand of electric power electronics miniaturization development.
Based on above-mentioned present situation, differential mode magnetic integrated inductor is gradually as the Hot spots for development of future electrical energy electronic technology field altogether.
Due to the magnetic characteristic difference of common mode inductance in wave filter and differential mode inductance, the integrated of differential mode is definitely not simply by common mode inductance altogether
It is combined with differential mode inductance, but needs to consider the various aspects such as common differential mode structure type, core material, production installation
Factor.
The common mode differential mode that Chinese patent application CN106856140A discloses a kind of bimag spatially interlaced arrangement integrates
Inductance, the common mode differential mode integrated inductor include：Cast common mode magnetic core；Cast differential mode magnetic core, the cast common mode magnetic core with it is described
Cast differential mode magnetic core is homocentric；First common mode winding is wrapped in the cast common mode magnetic core side；Second common mode winding, it is described common
Mould winding is symmetrical, is wrapped in the cast common mode magnetic core opposite side；First differential mode winding is wrapped in the differential mode cast magnetic core
Side.The program exist be wound on simultaneously partially long common mode magnetic core and coil on differential mode magnetic core and core length, common mode magnetic core and
The deficiencies of technique for coiling that differential mode magnetic core overall volume is bigger than normal, winding is wound on simultaneously on two magnetic cores is complicated.
Utility model content
The utility model for it is existing the technical issues of make improvements, i.e., the technical problem to be solved is that carry for utility model
For a kind of differential mode magnetic integrated inductor altogether, with magnetic core and coil dosage are few, inductance is integrally small, manufacture craft is easily special
Point.
For above-mentioned technical problem, technical solution provided by the utility model is：
A kind of differential mode magnetic integrated inductor altogether, including winding and magnetic core, the magnetic core includes I types magnetic core and E-type magnetic core, described
E-type magnetic core includes left magnetic pole, middle magnetic pole and the right magnetic pole at connection magnetic core back respectively, and the upper end of the left magnetic pole connects the I
The left end of type magnetic core, the upper end of the right magnetic pole connect the right end of the I types magnetic core, and the winding includes being around in the left magnetic pole
Left winding and be around in the right winding of the right magnetic pole, there are air gaps at the middle part of the upper end of the middle magnetic pole and the I types magnetic core.
Further, the connecting portion of the I types magnetic core and E-type magnetic core is in the lower surface of the I types magnetic core, the left magnetic pole
With the upper surface of right magnetic pole, the upper surface of the lower surface of the I types magnetic core, the left magnetic pole and right magnetic pole is through mirror surface treatment
Smooth surface.
Further, the upper insulation plate of the top positioned at the left winding and right winding is further included and positioned at the left winding
With the lower insulation plate of the lower section of right winding, the upper insulation plate and lower insulation plate are equipped with for the left magnetic pole, middle magnetic pole, right magnetic
The through-hole that column passes through.
Further, the coil of the left winding and right winding is enamel covered wire, enamel insulated aluminium wire, flat copper wire and flat type aluminum wire
In one kind.
Further, the coil body of the left winding and right winding is electric connection terminal.
Further, the material of the magnetic core is high magnetic permeability soft magnetic materials.
Common differential mode magnetic integrated inductor based on above structure and magnetic core mirror surface treatment, make common mode magnetic circuit keep high magnetic permeability,
Larger common mode inductance value is easily obtained, differential mode magnetic circuit keeps low magnetic permeability and highly resistance saturability, prevents due to differential mode circuit
Direct current biasing cause magnetic core saturation.Meanwhile the differential mode inductance inductance value of common and differential mode inductor provided by the utility model is adjustable, magnetic
Core and coil materials are few, manufacturing process is simple, assembling is also more convenient.
Description of the drawings
Fig. 1 is the front view of differential mode magnetic integrated inductor altogether provided by the utility model.
Fig. 2 is the principle schematic of differential mode magnetic integrated inductor altogether provided by the utility model, and wherein ic represents common mode current
Direction, id represent differential-mode current direction, ΦcRepresent common mode flux direction, ΦdRepresent different mode flux direction.
Fig. 3 is the three-dimensional view of differential mode magnetic integrated inductor altogether provided by the utility model.
Fig. 4 is the side view of differential mode magnetic integrated inductor altogether provided by the utility model.
Fig. 5 is the vertical view of differential mode magnetic integrated inductor altogether provided by the utility model.
Specific embodiment
It is described below to disclose the utility model so that those skilled in the art can realize the utility model.It retouches below
Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
In order to describe conveniently, about direction term used herein, such as：Upper and lower, left and right etc. are only with reference to attached
The direction of figure, that is, the direction term used are intended to be illustrative and not intended to limit this creation.
Common differential mode magnetic integrated inductor in the present embodiment, including magnetic core, winding, insulation board and bottom plate 7.
Magnetic core includes the I types magnetic core 1 being connected with each other and E-type magnetic core 2.E-type magnetic core 2 includes connection magnetic core back 24 respectively
Left magnetic pole 21, middle magnetic pole 22 and right magnetic pole 23.Left magnetic pole 21, right magnetic pole 23 lower end connect the one of magnetic core back 24 respectively
End, left magnetic pole 21, right magnetic pole 23 upper end connect one end of I types magnetic core 1 respectively.The lower end connection magnetic core back 24 of middle magnetic pole 22
Middle part, be provided with air gap 8 in the middle part of the upper end and I type magnetic cores.The rectangular cross-section of I types magnetic core 1, left magnetic pole 21, middle magnetic pole 22,
The rectangular cross-section of right magnetic pole 23 or ellipse.In terms of material, I types magnetic core 1, E-type magnetic core 2 use high magnetic permeability soft magnetic materials
It is made.Meanwhile E-type magnetic core 2 is structure as a whole.
The connecting portion of the I types magnetic core and E-type magnetic core is in the lower surface of the I types magnetic core, the left magnetic pole and right magnetic
The upper surface of column.The lower surface of the i.e. I types magnetic core 1 in the side surface that I types magnetic core 1 is contacted with E-type magnetic core 2 carries out mirror surface treatment, E types
Left 21 upper end of magnetic pole of magnetic core carries out mirror surface treatment with right 23 upper end face of magnetic pole.It, can be further based on above-mentioned magnetic core mirror surface treatment
Increase common mode inductance value.
Winding includes the left winding 3 being around in left magnetic pole 21 and the right winding 4 being around in right magnetic pole 23.Left winding 3, it is right around
Group 4 is enamel covered wire, enamel insulated aluminium wire, flat copper wire or flat type aluminum wire coil windings.In addition, coil windings by the use of linear material main body as
Electric connection terminal.The two windings are symmetrically placed in E-type magnetic core 2, and two umber of turns are identical, direction is opposite.Here by I type magnetic
The cyclic structure that core 1, left magnetic pole 21, right magnetic pole 23 and magnetic core back 24 form is defined as big ring.Two rings inside magnetic core are determined
Justice is small ring.Big ring high permeability magnetic core is used for suppression common mode noise, can be with according to common mode current direction and right-hand screw rule
Judge, the common mode flux that two windings generate is strengthened mutually in big ring, and big ring contributes larger common mode inductance, therefore to altogether
Mode noise shows very high impedance, so as to suppression common mode noise.Small ring is for inhibiting differential mode noise, due to E-type magnetic core 2
Middle magnetic pole 22 be provided with that adjustable air gap 8, Effective permeability is relatively low and has the ability of stronger anti-saturation, small ring contribution compared with
Big differential mode inductance may determine that also according to differential-mode current direction and right-hand screw rule, the differential mode that two coils generate
Magnetic flux offsets each other in big ring, and ring small so just provides access for different mode flux, so as to inhibit DM EMI.
Insulation board includes upper insulation plate 5, lower insulation plate 6.Upper insulation plate 5 is equipped with for left magnetic pole 21, middle magnetic pole 22, right magnetic
The through-hole that column 23 passes through, and the plate is located at the top of left winding 3, right winding 4；Similarly, lower insulation plate 6, which is equipped with, supplies left magnetic pole
21st, the through-hole that middle magnetic pole 22, right magnetic pole 23 pass through, and the plate is located at the lower section of left winding 3, right winding 4.
Lower plate 7 is fixed on 24 rear surface of magnetic core back.
Above-mentioned differential mode magnetic integrated inductor realizes common mode inductance altogether and the magnetic of differential mode inductance integrates, while protects common mode magnetic circuit
Hold high magnetic permeability, be easily obtained larger common mode inductance value, differential mode magnetic circuit keep low magnetic permeability and highly resistance saturability, prevent by
Direct current biasing in differential mode circuit causes magnetic core saturation.Two kinds of inductance (common mode inductance and differential modes are used while compared to tradition
Inductance) difference suppression common mode is interfered and the scheme of DM EMI, the overall volume smaller of the inductance of the present embodiment.
Above-mentioned differential mode magnetic integrated inductor altogether realizes the magnetic core of common mode inductance and differential mode inductance and sharing for coil, phase simultaneously
Than in differential mode magnetic Integrated Solution altogether of the prior art, the core length of the present embodiment is shorter, while coil is only around in left magnetic pole
21 and right magnetic pole 23 on, save the materials of magnetic core and coil, while advantageously reduce loss.In addition, from technological angle, E types
Belong to maturation process with the manufacture of I types magnetic core, mirror surface treatment, the technique for coiling that coil is carried out to single magnetic pole is also more simple.
Since the middle magnetic pole 22 of E-type magnetic core 2 in above-described embodiment is provided with adjustable air gap 8.It can lead in process
It crosses the equipment such as milling drum and middle magnetic pole is cut off into a part, differential mode inductance value size is controlled by adjusting the length of removed part
And anti-saturation ability, realize the adjustment to differential mode inductance inductance value.
In addition, the present embodiment uses winding to be conducive to the installation of PCB plug-in units, technique by the use of linear material main body as electric connection terminal
Simply, it is easy to operate.
Result of the test shows, based on above-mentioned differential mode magnetic integrated inductor altogether, to select EI44 high magnetic conductivity ferrite magnetic cores, center pillar
Open air gap 6mm, mirror surface treatment, the equal coiling 16Ts in both sides, gained is 2.4mH, differential mode inductance 110uH per side common mode inductance value,
Differential mode inductance saturation current is more than 20A.
The technology contents of the not detailed description of the utility model are known technology.
The advantages of basic principle, main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only the utility model principle, on the premise of not departing from the spirit and scope of the utility model the utility model also have respectively
Kind changes and improvements, these changes and improvements are both fallen in claimed the scope of the utility model.The guarantor of the utility model
Shield range is defined by appended claims and its equivalent.
Claims (6)
1. a kind of differential mode magnetic integrated inductor altogether, including winding and magnetic core, which is characterized in that the magnetic core includes I types magnetic core and E types
Magnetic core, the E-type magnetic core include left magnetic pole, middle magnetic pole and the right magnetic pole at connection magnetic core back respectively, the upper end of the left magnetic pole
The left end of the I types magnetic core is connected, the upper end of the right magnetic pole connects the right end of the I types magnetic core, and the winding includes being around in
The left winding of the left magnetic pole and the right winding for being around in the right magnetic pole, the upper end of the middle magnetic pole in the I types magnetic core
There are air gaps in portion.
2. differential mode magnetic integrated inductor altogether according to claim 1, which is characterized in that the company of the I types magnetic core and E-type magnetic core
Socket part is located at the upper surface of the lower surface of the I types magnetic core, the left magnetic pole and right magnetic pole, the lower surface of the I types magnetic core, institute
The upper surface for stating left magnetic pole and right magnetic pole is the smooth surface through mirror surface treatment.
3. differential mode magnetic integrated inductor altogether according to claim 2, which is characterized in that further include positioned at the left winding and the right side
The upper insulation plate of the top of winding and the lower insulation plate positioned at the left winding and the lower section of right winding, the upper insulation plate and
Lower insulation plate is equipped with the through-hole passed through for the left magnetic pole, middle magnetic pole, right magnetic pole.
4. differential mode magnetic integrated inductor altogether according to any one of claim 1 to 3, which is characterized in that the left winding and
The coil of right winding is one kind in enamel covered wire, enamel insulated aluminium wire, flat copper wire and flat type aluminum wire.
5. differential mode magnetic integrated inductor altogether according to claim 4, which is characterized in that the coil of the left winding and right winding
Ontology is electric connection terminal.
6. differential mode magnetic integrated inductor altogether according to any one of claim 1 to 3, which is characterized in that the material of the magnetic core
Matter is high magnetic permeability soft magnetic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721387834.8U CN207503796U (en) | 2017-10-26 | 2017-10-26 | A kind of differential mode magnetic integrated inductor altogether |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721387834.8U CN207503796U (en) | 2017-10-26 | 2017-10-26 | A kind of differential mode magnetic integrated inductor altogether |
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| Publication Number | Publication Date |
|---|---|
| CN207503796U true CN207503796U (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721387834.8U Active CN207503796U (en) | 2017-10-26 | 2017-10-26 | A kind of differential mode magnetic integrated inductor altogether |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107742570A (en) * | 2017-10-26 | 2018-02-27 | 合肥博微田村电气有限公司 | A kind of differential mode magnetic integrated inductor altogether |
| CN109148084A (en) * | 2018-09-14 | 2019-01-04 | 江西欧美亚电子有限公司 | A kind of ultrathin differential mode filter altogether |
| CN111462981A (en) * | 2019-01-18 | 2020-07-28 | 泰达电子股份有限公司 | Integrated magnetic components |
-
2017
- 2017-10-26 CN CN201721387834.8U patent/CN207503796U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107742570A (en) * | 2017-10-26 | 2018-02-27 | 合肥博微田村电气有限公司 | A kind of differential mode magnetic integrated inductor altogether |
| CN109148084A (en) * | 2018-09-14 | 2019-01-04 | 江西欧美亚电子有限公司 | A kind of ultrathin differential mode filter altogether |
| CN111462981A (en) * | 2019-01-18 | 2020-07-28 | 泰达电子股份有限公司 | Integrated magnetic components |
| CN111462981B (en) * | 2019-01-18 | 2024-05-14 | 泰达电子股份有限公司 | Integrated magnetic component |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210105 Address after: 230601 workshop 2, tianmenhu Industrial Park, 150 meters south of the intersection of Tianmen road and Jinxiu Avenue, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Anhui Bowei New Magnetic Technology Co.,Ltd. Address before: 230088 no.669, Changjiang West Road, high tech Development Zone, Hefei City, Anhui Province Patentee before: HEFEI ECRIEE-TAMURA ELECTRIC Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 230601 workshop 2, tianmenhu Industrial Park, 150 meters south of the intersection of Tianmen road and Jinxiu Avenue, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Anhui Xinci Technology Co.,Ltd. Country or region after: China Address before: 230601 workshop 2, tianmenhu Industrial Park, 150 meters south of the intersection of Tianmen road and Jinxiu Avenue, Hefei Economic and Technological Development Zone, Anhui Province Patentee before: Anhui Bowei New Magnetic Technology Co.,Ltd. Country or region before: China |