CN219105893U - Two-way staggered magnetic integrated inductor - Google Patents
Two-way staggered magnetic integrated inductor Download PDFInfo
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- CN219105893U CN219105893U CN202223573691.3U CN202223573691U CN219105893U CN 219105893 U CN219105893 U CN 219105893U CN 202223573691 U CN202223573691 U CN 202223573691U CN 219105893 U CN219105893 U CN 219105893U
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Abstract
The utility model discloses a two-way staggered magnetic integrated inductor, which comprises a magnetic core structure in a Chinese character 'ri' shape and two inductance windings symmetrically wound on two sides of the magnetic core structure; the magnetic core structure comprises a center pillar magnetic core, side pillar magnetic cores symmetrically arranged on two sides of the center pillar and a plurality of magnetic yokes symmetrically arranged on the top end and the bottom end of each side pillar, and each magnetic yoke is horizontally arranged towards the center pillar; the inductance winding is wound on the side column magnetic core at the corresponding side; the center pillar magnetic core, the side pillar magnetic core and the magnetic yoke are made of the same material and have no air gap inside; two paths of magnetic circuits are isolated from each other through adopting a single material magnetic core, two paths of staggered magnetic integrated inductors can work simultaneously, and magnetic fluxes generated by two paths of currents can be counteracted on a center column all the time by adjusting winding directions according to current inflow directions and phase differences, so that magnetic losses are reduced, load inductance is improved, and system ripple is reduced.
Description
Technical Field
The utility model relates to a two-way staggered magnetic integrated inductor, and belongs to the technical field of magnetic integrated inductors.
Background
The magnetic element has become a limiting factor for the increase of power density of the power electronic converter as an important component in the power electronic converter. The multiple inductors are integrated together through a magnetic integration technology, so that the volume of the inductor can be obviously reduced, and the cost is reduced. The prior integrated inductor integrates the two inductors together through the common magnetic core, and magnetic fluxes of the two inductors are counteracted in the upper direction of the common magnetic core, so that the sectional area of the common magnetic core can be reduced, the miniaturization and integration of the magnetic element are realized, and the power density is improved. Although the inductor structure part can realize miniaturization and integration of the magnetic element and improve the power density, at least two magnetic cores are needed, namely a high-permeability magnetic core without an air gap inside and a magnetic core with an air gap inside.
Disclosure of Invention
The utility model aims to provide a magnetic integrated circuit which can realize two-way magnetic integration by adopting a single material magnetic core, two-way magnetic circuits are isolated from each other, two-way staggered magnetic integrated inductors can work simultaneously, and magnetic fluxes generated by two-way currents can be always offset on a center post by adjusting winding directions according to current inflow directions and phase differences, so that magnetic loss is reduced, load inductance is improved, and system ripple is reduced.
The technical scheme adopted by the utility model is as follows:
the two-way staggered magnetic integrated inductor comprises a magnetic core structure in a Chinese character 'ri' shape and two inductance windings symmetrically wound on two sides of the magnetic core structure; the magnetic core structure comprises a center pillar magnetic core, side pillar magnetic cores symmetrically arranged on two sides of the center pillar and a plurality of magnetic yokes symmetrically arranged on the top end and the bottom end of each side pillar, and each magnetic yoke is horizontally arranged towards the center pillar;
the inductance winding is wound on the side column magnetic core at the corresponding side;
the center pillar magnetic core, the side pillar magnetic core and the magnetic yoke are made of the same material and have no air gap inside;
the center pillar magnetic core, the side pillar magnetic core, the magnetic yoke and the inductance winding on the corresponding side form two paths of inductors, and the current phase difference of the two paths of inductors is 180 degrees.
As one preferable aspect of the present utility model, the center pillar magnetic core, the side pillar magnetic core, and the yoke are each formed by laminating and bonding a plurality of sheet-shaped magnetic cores; the sheet magnetic core lamination direction of the center pillar magnetic core is perpendicular to the magnetic core structure plane and sequentially distributed along the left-right direction, and the sheet magnetic core lamination direction of the side pillar magnetic core and the sheet magnetic core lamination direction of the magnetic yoke are parallel to the magnetic core structure plane and sequentially distributed along the front-back direction.
As a preferable aspect of the present utility model, the thickness of the sheet-shaped magnetic core is 0.05-1mm.
Preferably, the cross-sectional area of the center pillar magnetic core is 0.8-1.5 times of the longitudinal cross-sectional area of the magnetic yoke.
Preferably, the inductance winding is made of copper or aluminum.
As one preferable aspect of the present utility model, an air gap is formed between an end of each of the yokes and the center pillar core.
As one preferable aspect of the present utility model, a circular hole is formed in each of the yokes.
The utility model has the beneficial effects that:
the two-way staggered magnetic integrated inductor with the phase difference of 180 degrees can meet the requirement that two ways work simultaneously, and magnetic fluxes generated by two ways of currents can be offset on a center pole magnetic core all the time by adjusting winding directions of windings according to current inflow directions and the phase difference, so that magnetic loss is reduced, load inductance is improved, and system ripple is reduced; the magnetically integrated inductor may also operate in one path and set in a sleep state in the other path.
The magnetic integrated inductor also realizes miniaturization and integration of the magnetic element, improves the power density and reduces the cost of the magnetic element; and the magnetic loss and the system ripple can be reduced, the load inductance is improved, and the multi-scene work can be realized.
Drawings
FIG. 1 is a schematic diagram of a two-way interleaved magnetic integrated inductor (with air gaps);
FIG. 2 is a schematic diagram of another two-way interleaved magnetic integrated inductor (without air gap);
FIG. 3 is a schematic diagram showing the current i and the inductance Q of the two-path inductor of the magnetically integrated inductor of FIG. 2 with time t;
the main reference numerals in the figures have the following meanings:
1. the magnetic core comprises an inductance winding, a center pillar magnetic core, a side pillar magnetic core, a magnetic yoke, an air gap, a sheet magnetic core, a round hole and a magnetic yoke.
Detailed Description
The utility model is described in detail below with reference to the drawings and examples.
As shown in fig. 1-3: the embodiment is a two-way staggered magnetic integrated inductor, which comprises a magnetic core structure in a Chinese character 'ri' shape and two inductance windings 1 symmetrically wound on two sides of the magnetic core structure; the magnetic core structure comprises a center pillar magnetic core 2, side pillar magnetic cores 3 symmetrically arranged on two sides of the center pillar and a plurality of magnetic yokes 4 symmetrically arranged on the top end and the bottom end of each side pillar, wherein the cross section area of the center pillar magnetic core 2 is 0.8-1.5 times of the longitudinal section area of each magnetic yoke 4, each magnetic yoke 4 is horizontally arranged towards the center pillar, and an air gap 5 (shown in figure 1) is formed between the end part of each magnetic yoke 4 and the center pillar magnetic core 2; the center pillar magnetic core 2, the side pillar magnetic cores 3 and the magnetic yoke 4 are made of the same material and are provided with no air gap 5 inside, and are formed by laminating and bonding a plurality of sheet magnetic cores 6, wherein the thickness of each sheet magnetic core 6 is 0.05-1mm; wherein, the lamination direction of the sheet-shaped magnetic core 6 of the center pillar magnetic core 2 is perpendicular to the magnetic core structure plane and sequentially distributed along the left-right direction, and the lamination direction of the sheet-shaped magnetic core 6 of the side pillar magnetic core 3 and the lamination direction of the sheet-shaped magnetic core 6 of the magnetic yoke 4 are parallel to the magnetic core structure plane and sequentially distributed along the front-back direction.
The inductance winding 1 is wound on the side column magnetic core 3 at the corresponding side, the inductance winding 1 is made of copper or aluminum, and the winding mode can be vertical winding, horizontal winding or foil winding.
The center leg core 2, the side leg core 3, the yoke 4, and the inductor winding 1 on the corresponding side form two paths of inductors, and the current phase difference of the two paths of inductors is 180 degrees.
In order to facilitate the assembly of the magnetic integrated inductor by using hardware fittings such as screw rods, circular holes 7 are formed in each magnetic yoke 4.
In practical use, the end of each yoke 4 may abut against the leg core 2, i.e. no air gap 5 is formed (see fig. 2).
Taking the magnetic integrated inductor shown in fig. 2 as an example, when the inductance value of the left inductance winding 1 is 143uH and 600a, the load inductance is 142uH; when the inductance value of the right inductance winding 1 is 143uH and 600A, the load inductance is 142uH; indicating that the inductor has excellent anti-saturation characteristics. The inductance value of the two-side windings is 289uH after being connected in series, the inductance value of the two-side windings is 287uH after being connected in series and is basically consistent with the sum 286uH and 284uH of the inductance values of the two-side windings respectively, which indicates that the magnetic coupling of the two-side windings is very weak and the magnetic circuit isolation is basically realized.
The foregoing is merely illustrative of the preferred embodiments of this utility model, and it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of this utility model, and such variations and modifications are to be regarded as being within the scope of this utility model.
Claims (7)
1. The two-way staggered magnetic integrated inductor is characterized by comprising a magnetic core structure in a Chinese character 'ri' shape and two inductance windings symmetrically wound on two sides of the magnetic core structure; the magnetic core structure comprises a center pillar magnetic core, side pillar magnetic cores symmetrically arranged on two sides of the center pillar and a plurality of magnetic yokes symmetrically arranged on the top end and the bottom end of each side pillar, and each magnetic yoke is horizontally arranged towards the center pillar;
the inductance winding is wound on the side column magnetic core at the corresponding side;
the center pillar magnetic core, the side pillar magnetic core and the magnetic yoke are made of the same material and have no air gap inside;
the center pillar magnetic core, the side pillar magnetic core, the magnetic yoke and the inductance winding on the corresponding side form two paths of inductors, and the current phase difference of the two paths of inductors is 180 degrees.
2. The two-way interleaved magnetic integrated inductor according to claim 1 wherein the center leg core, the side leg cores and the yoke are each formed by laminating and bonding a plurality of sheet cores; the sheet magnetic core lamination direction of the center pillar magnetic core is perpendicular to the magnetic core structure plane and sequentially distributed along the left-right direction, and the sheet magnetic core lamination direction of the side pillar magnetic core and the sheet magnetic core lamination direction of the magnetic yoke are parallel to the magnetic core structure plane and sequentially distributed along the front-back direction.
3. The two-way interleaved magnetic integrated inductor according to claim 2 wherein the thickness of the sheet core is 0.05-1mm.
4. The two-way interleaved magnetic integrated inductor according to claim 1 wherein the cross-sectional area of the center leg core is 0.8-1.5 times the longitudinal cross-sectional area of the yoke.
5. The two-way interleaved magnetically integrated inductor according to claim 1 wherein the inductor winding is copper or aluminum.
6. A two-way interleaved magnetic integrated inductor according to claim 1 wherein an air gap is formed between an end of each of the yokes and a center leg core.
7. The two-way interleaved magnetically integrated inductor according to claim 1 wherein each of the yokes is provided with a circular aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223573691.3U CN219105893U (en) | 2022-12-30 | 2022-12-30 | Two-way staggered magnetic integrated inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223573691.3U CN219105893U (en) | 2022-12-30 | 2022-12-30 | Two-way staggered magnetic integrated inductor |
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| Publication Number | Publication Date |
|---|---|
| CN219105893U true CN219105893U (en) | 2023-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223573691.3U Active CN219105893U (en) | 2022-12-30 | 2022-12-30 | Two-way staggered magnetic integrated inductor |
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| CN (1) | CN219105893U (en) |
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2022
- 2022-12-30 CN CN202223573691.3U patent/CN219105893U/en active Active
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