CN219832394U - Low-loss high-DC bias magnetic core - Google Patents
Low-loss high-DC bias magnetic core Download PDFInfo
- Publication number
- CN219832394U CN219832394U CN202321028788.8U CN202321028788U CN219832394U CN 219832394 U CN219832394 U CN 219832394U CN 202321028788 U CN202321028788 U CN 202321028788U CN 219832394 U CN219832394 U CN 219832394U
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- Prior art keywords
- magnetic core
- splice
- piece
- splicing
- core
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- 239000000463 material Substances 0.000 claims description 20
- 239000006247 magnetic powder Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims 1
- 229910002796 Si–Al Inorganic materials 0.000 claims 1
- 239000011162 core material Substances 0.000 description 39
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 6
- 229910000702 sendust Inorganic materials 0.000 description 5
- -1 iron-silicon-aluminum Chemical compound 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- NQNBVCBUOCNRFZ-UHFFFAOYSA-N nickel ferrite Chemical compound [Ni]=O.O=[Fe]O[Fe]=O NQNBVCBUOCNRFZ-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- Coils Or Transformers For Communication (AREA)
Abstract
The utility model discloses a low-loss high-DC offset magnetic core, which comprises a spliced magnetic core, wherein the top and the bottom of the spliced magnetic core are respectively clamped with a top clamping ring and a bottom clamping ring, the spliced magnetic core comprises a plurality of first splicing pieces and a plurality of second splicing pieces, the first splicing pieces and the second splicing pieces are sequentially clamped to form a middle through hole, the first splicing pieces and the second splicing pieces are alternately arranged, the two sides of the top of the first splicing pieces are fixedly connected with top clamping columns, the two sides of the bottom of the first splicing pieces are fixedly connected with bottom clamping columns, the two sides of the top of the second splicing pieces are respectively provided with a top clamping groove, and one side of the top clamping ring close to the spliced magnetic core and one side of the bottom clamping ring close to the spliced magnetic core are respectively and fixedly connected with a plurality of top inserting columns at equal intervals.
Description
Technical Field
The utility model relates to the technical field of magnetic cores, in particular to a low-loss high-DC bias magnetic core.
Background
The magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical core materials. The Mn-Zn ferrite has the characteristics of high magnetic permeability and high magnetic flux density, and has the characteristic of low loss. The nickel-zinc ferrite has the characteristics of extremely high impedance rate, low magnetic permeability of less than hundreds, and the like. Ferrite cores are used in coils and transformers for various electronic devices.
The iron-nickel magnetic powder core has the highest direct current bias capability and good product performance, but 50 percent of nickel is also contained in the iron-nickel magnetic powder core, the price is high, and the production cost is high. The sendust core has very low magnetic core loss, good frequency characteristic and low cost, and the sendust core has poor DC bias capability under larger current, so that the sendust core is limited in use, and therefore, the utility model provides a low-loss high DC bias magnetic core.
Disclosure of Invention
The utility model aims to provide a low-loss high-DC bias magnetic core so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a low-loss high direct current offset magnetic core, includes the concatenation magnetic core, the top and the bottom of concatenation magnetic core joint have top snap ring and bottom snap ring respectively, the concatenation magnetic core includes a plurality of first splice pieces and second splice pieces, and is a plurality of first splice pieces and a plurality of the second splice pieces enclose into the middle part through-hole in proper order the joint, just first splice piece and second splice piece set up in turn, the equal fixedly connected with top clamping post in both sides at first splice piece top, the equal fixedly connected with bottom clamping post in both sides at first splice piece bottom, the top draw-in groove has all been seted up to the both sides at second splice piece top, bottom draw-in groove has all been seted up to the both sides at second splice piece bottom, one side that the top snap ring is close to the concatenation magnetic core and one side that the bottom snap ring is close to the concatenation magnetic core equal equidistance fixedly connected with a plurality of top spliced posts.
Preferably, the bottom clamping column and the bottom clamping groove are clamped with each other, and the top clamping column and the top clamping groove are clamped with each other and used for performing primary clamping and fixing on the first splicing piece and the second splicing piece.
Preferably, the clamping parts of the first splicing piece and the second splicing piece are adhered with an insulating layer, the insulating layer is made of a heat-conducting silica gel material, and the heat-conducting silica gel has good insulation and heat-conducting properties.
Preferably, the top and the bottom of the first splicing piece are provided with end slots, and the inserting columns are clamped with the inner cavities of the end slots, so that the bearing capacity of the longitudinal stress of the spliced magnetic core is enhanced.
Preferably, the first splicing piece is made of a sendust material, and the second splicing piece is made of a sendust material.
Preferably, a plurality of limit grooves are formed in the surface of the top clamping ring and the surface of the bottom clamping ring at equal intervals, and limit is carried out on the winding.
Compared with the prior art, the utility model has the beneficial effects that:
1. the first splicing pieces and the second splicing pieces are spliced to form the magnetic core, and the first splicing pieces and the second splicing pieces are bonded and insulated through the insulating layer, so that the ratio of the first splicing pieces to the second splicing pieces in the whole spliced magnetic core is reduced, the generated eddy current can be directly weakened, the whole eddy current loss is directly reduced, the first splicing pieces are made of iron-nickel magnetic powder materials, the second splicing pieces are made of iron-silicon-aluminum magnetic powder materials, the performances of the iron-nickel magnetic powder materials and the iron-silicon-aluminum magnetic powder materials can be neutralized, and the direct current bias capacity of the spliced magnetic core is improved;
2. the first splicing piece and the second splicing piece are basically spliced in a clamping mode of the top clamping column and the top clamping groove, and the bottom clamping column and the bottom clamping groove are spliced in a clamping mode, and are bonded through the insulating layer, so that the splicing stability of the first splicing piece and the second splicing piece is improved.
Drawings
FIG. 1 is a side view of the present utility model;
FIG. 2 is a schematic structural view of the inner core of the present utility model;
FIG. 3 is a diagram showing a splice relationship between a first splice magnetic sheet and a second splice magnetic sheet according to the present utility model;
FIG. 4 is a top view of the snap ring of the present utility model;
fig. 5 is a bottom view of the snap ring of the present utility model.
In the figure: 1. splicing magnetic cores; 2. a top snap ring; 3. a bottom clasp; 4. a first splicing piece; 5. a second splicing piece; 6. an insulating layer; 7. a middle through hole; 8. a top clamping column; 9. a bottom clamping column; 10. a bottom clamping groove; 11. a top clamping groove; 12. inserting a column; 13. a limit groove; 14. an end slot.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the utility model provides a low-loss high-direct-current bias magnetic core, which comprises a spliced magnetic core 1, wherein a top clamping ring 2 and a bottom clamping ring 3 are respectively clamped at the top and the bottom of the spliced magnetic core 1, the spliced magnetic core 1 comprises a plurality of first splicing pieces 4 and a plurality of second splicing pieces 5, the first splicing pieces 4 and the second splicing pieces 5 are sequentially clamped and enclosed into a middle through hole 7, the first splicing pieces 4 and the second splicing pieces 5 are alternately arranged, two sides of the top of the first splicing pieces 4 are fixedly connected with top clamping columns 8, two sides of the bottom of the first splicing pieces 4 are fixedly connected with bottom clamping columns 9, two sides of the top of the second splicing pieces 5 are respectively provided with a top clamping groove 11, two sides of the bottom of the second splicing pieces 5 are respectively provided with a bottom clamping groove 10, and one side of the top clamping ring 2 close to the spliced magnetic core 1 and one side of the bottom clamping ring 3 close to the spliced magnetic core 1 are respectively and equidistantly fixedly connected with a plurality of top inserting columns 12.
Referring to fig. 1-5, further, the bottom clamping column 9 and the bottom clamping groove 10 are clamped with each other, the top clamping column 8 and the top clamping groove 11 are clamped with each other, and the first splicing piece 4 and the second splicing piece 5 are spliced and fixed.
Referring to fig. 1-5, the further clamping parts of the first splicing piece 4 and the second splicing piece 5 are adhered with an insulating layer 6, the insulating layer 6 is made of a heat-conducting silica gel material, the connection of the first splicing piece 4 and the second splicing piece 5 is adhered and fixed, and the heat-conducting silica gel material has good heat conductivity and insulativity.
Referring to fig. 1-5, the top and bottom of the further first splicing piece 4 are provided with end slots 14, and the inserting posts 12 are clamped with the inner cavities of the end slots 14, so that the top and bottom of the spliced magnetic core 1 are clamped, and the longitudinal stress capability of the spliced magnetic core 1 is enhanced.
Referring to fig. 1-5, the first splicing piece 4 is made of a nickel ferrite magnetic powder material, and the second splicing piece 5 is made of a silicon ferrite magnetic powder material, so that the performances of the nickel ferrite magnetic powder material and the silicon ferrite magnetic powder material can be neutralized, and the direct current bias capability of the spliced magnetic core 1 is improved.
Referring to fig. 1-5, a plurality of limiting grooves 13 are formed on the surface of the top clamping ring 2 and the surface of the bottom clamping ring 3 at equal intervals for limiting the winding.
When the splice joint is specifically used, firstly, a plurality of first splice pieces 4 and second splice pieces 5 are overlapped and spliced to form an annular structure, then, the top clamping column 8 on the first splice piece 4 is clamped with the top clamping groove 11 on the second splice piece 5, the bottom clamping column 9 on the first splice piece 4 is clamped with the bottom clamping groove 10, then, the bonding part of the first splice piece 4 and the second splice piece 5 is bonded and fixed through the insulating layer 6, then, the inserting column 12 on the top clamping ring 2 is clamped with the end slot 14 at the top of the first splice piece 4, the inserting column 12 on the bottom clamping ring 3 is clamped with the end slot 14 at the bottom of the first splice piece 4, the installation of the magnetic core can be completed, the magnetic core is formed by splicing a plurality of first splicing pieces 4 and second splicing pieces 5, and the first splicing pieces 4 and the second splicing pieces 5 are bonded and insulated through an insulating layer 6, so that the proportion of the first splicing pieces 4 and the second splicing pieces 5 in the whole spliced magnetic core 1 is reduced, the generated eddy current can be directly weakened, the whole eddy current loss is directly reduced, the first splicing pieces 4 are made of iron-nickel magnetic powder materials, the second splicing pieces 5 are made of iron-silicon-aluminum magnetic powder materials, the performances of the iron-nickel magnetic powder materials and the iron-silicon-aluminum magnetic powder materials can be neutralized, and the direct current bias capacity of the spliced magnetic core 1 is improved; first splicing piece 4 and second splicing piece 5 are first through top clamping column 8 and top draw-in groove 11 joint, and the mode of bottom clamping column 9 and bottom draw-in groove 10 joint carries out basic concatenation, and rethread insulating layer 6 bonds to improve the stability of first splicing piece 4 and second splicing piece 5 concatenation.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. The utility model provides a low-loss high direct current offset magnetic core, includes concatenation magnetic core (1), its characterized in that: the utility model provides a splice magnetic core, splice magnetic core (1)'s top and bottom joint have top snap ring (2) and bottom snap ring (3) respectively, splice magnetic core (1) include a plurality of first splice piece (4) and second splice piece (5), a plurality of bottom splice piece (10) have all been seted up to the both sides at second splice piece (5) bottom, one side that top snap ring (2) are close to splice magnetic core (1) and one side that bottom snap ring (3) are close to splice magnetic core (1) equal fixedly connected with top draw-in column (8) in the both sides at first splice piece (4) top, top draw-in groove (11) have all been seted up to the both sides at first splice piece (4) bottom, bottom draw-in groove (10) have all been seted up to the both sides at second splice piece (5) bottom, one side that top snap ring (2) are close to splice magnetic core (1) and one side that bottom snap ring (3) are close to splice magnetic core (1) equal fixedly connected with a plurality of top draw-in column (12).
2. A low loss, high dc bias core as claimed in claim 1, wherein: the bottom clamping column (9) and the bottom clamping groove (10) are mutually clamped, and the top clamping column (8) and the top clamping groove (11) are mutually clamped.
3. A low loss, high dc bias core as claimed in claim 1, wherein: the clamping parts of the first splicing piece (4) and the second splicing piece (5) are adhered with an insulating layer (6), and the insulating layer (6) is made of a heat-conducting silica gel material.
4. A low loss, high dc bias core as claimed in claim 1, wherein: the top and the bottom of the first splicing piece (4) are provided with end slots (14), and the inserting columns (12) are clamped with the inner cavities of the end slots (14).
5. A low loss, high dc bias core as claimed in claim 1, wherein: the first splicing piece (4) is made of a Fe-Ni magnetic powder material, and the second splicing piece (5) is made of a Fe-Si-Al magnetic powder material.
6. A low loss, high dc bias core as claimed in claim 1, wherein: a plurality of limit grooves (13) are formed in the surface of the top clamping ring (2) and the surface of the bottom clamping ring (3) at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321028788.8U CN219832394U (en) | 2023-05-04 | 2023-05-04 | Low-loss high-DC bias magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321028788.8U CN219832394U (en) | 2023-05-04 | 2023-05-04 | Low-loss high-DC bias magnetic core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219832394U true CN219832394U (en) | 2023-10-13 |
Family
ID=88244652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321028788.8U Active CN219832394U (en) | 2023-05-04 | 2023-05-04 | Low-loss high-DC bias magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219832394U (en) |
-
2023
- 2023-05-04 CN CN202321028788.8U patent/CN219832394U/en active Active
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| GR01 | Patent grant |