CN202454369U - Composite soft magnet core for resisting electromagnetic interference - Google Patents
Composite soft magnet core for resisting electromagnetic interference Download PDFInfo
- Publication number
- CN202454369U CN202454369U CN2012200808397U CN201220080839U CN202454369U CN 202454369 U CN202454369 U CN 202454369U CN 2012200808397 U CN2012200808397 U CN 2012200808397U CN 201220080839 U CN201220080839 U CN 201220080839U CN 202454369 U CN202454369 U CN 202454369U
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- CN
- China
- Prior art keywords
- electromagnetic interference
- magnetic
- composite soft
- magnet core
- magnetic ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims description 14
- 239000011324 bead Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 229910000859 α-Fe Inorganic materials 0.000 claims description 9
- 230000000295 complement effect Effects 0.000 claims description 3
- 229910003962 NiZn Inorganic materials 0.000 description 7
- 239000006247 magnetic powder Substances 0.000 description 5
- 230000004907 flux Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229910002555 FeNi Inorganic materials 0.000 description 1
- 229910005347 FeSi Inorganic materials 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
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- Coils Or Transformers For Communication (AREA)
Abstract
The utility model discloses a composite soft magnet core for resisting electromagnetic interference. The composite soft magnet core comprises a small magnetic ring A and a big magnetic ring B, wherein the outer diameter of the small magnetic ring A is matched with the inner diameter of the big magnetic ring B, and the small magnetic ring A is sheathed in the big magnetic ring B. The composite soft magnet core disclosed by the utility model can meet the double requirements of broadband and high direct current superposition of the magnet core for resisting the electromagnetic interference.
Description
Technical field
The utility model relates to a kind of composite soft-magnetic magnetic core, and particularly a kind of anti-electromagnetic interference is used the composite soft-magnetic magnetic core.
Background technology
At present, along with fast development of information technology, the requirement of the magnetic core that the antagonism electromagnetic interference is used also develops towards the high DC stacked direction of Kuan Pin ﹑.The general independent use NiZn ferrite of the magnetic core that anti-electromagnetic interference is used or the metal magnetic heart.Employing NiZn Ferrite Material, its frequency of utilization is higher, but Bs is lower, and the dc superposition characteristic of the device of making is often not as the metal magnetic heart; And adopt metal magnetic heartwood material, and though its Bs is higher, the dc superposition characteristic of the device of making is better, frequency of utilization is lower.
Summary of the invention
The utility model technical problem to be solved provides a kind of anti-electromagnetic interference and uses the composite soft-magnetic magnetic core, has satisfied the high DC stacked double requirements of Kuan Pin ﹑ of the magnetic core that anti-electromagnetic interference uses.
The technical scheme that the utility model technical solution problem adopts is: a kind of anti-electromagnetic interference is used the composite soft-magnetic magnetic core, comprises bead A and big magnet ring B, and the external diameter of said bead A is complementary with the internal diameter of big magnet ring B, and said bead A is placed in the big magnet ring B.
As a kind of preferred, said bead A adopts Ferrite Material, and said big magnet ring B adopts metal magnetic heartwood material.
The metal magnetic heartwood material that the utility model adopts can be in FeSiAl magnetic powder core, FeSi magnetic powder core, FeNiMo magnetic powder core, high magnetic flux FeNi magnetic powder core and the amorphous magnetic powder core any.
In the utility model, bead A can adopt the mode of epoxy resin or waterglass bonding to realize with the combination of big magnet ring B.
The material behavior of the General N iZn ferrite and the metal magnetic heart contrasts like following table:
| Material | The NiZn ferrite | The metal magnetic heart |
| Applying frequency scope (Hz) | >1M | 1k～1000k |
| Initial permeability μ i | 5～2500 | 10～500 |
| Saturation flux density Bs (mT) | 250～500 | 750～1600 |
| Curie temperature Tc (℃) | 120～450 | >300 |
The beneficial effect of the utility model is: the magnet ring magnetic core that is compounded to form of the bead through the NiZn Ferrite Material and the big magnet ring of metal magnetic heartwood material; On the one hand since the ferritic frequency of utilization of NiZn apparently higher than the metal magnetic heart, thereby improved the frequency of utilization of device; On the other hand because the Bs of the metal magnetic heart (750～1600mT) apparently higher than the ferritic Bs of NiZn (≤500mT), thereby improved the DC stacked performance of device.NiZn ferrite and metal magnetic heartwood material are used in combination, learn from other's strong points to offset one's weaknesses, satisfied the high DC stacked double requirements of Kuan Pin ﹑ of the magnetic core that anti-electromagnetic interference uses.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Below in conjunction with accompanying drawing the utility model is further specified.
Embodiment
As shown in Figure 1; A kind of anti-electromagnetic interference is used the composite soft-magnetic magnetic core, comprises the bead A1 of Ferrite Material and the big magnet ring B2 of metal magnetic heartwood material, and the external diameter of bead A1 is complementary with the internal diameter of big magnet ring B2; Bead A1 is placed in the big magnet ring B2, and passes through epoxy bond.This magnetic core has satisfied the high DC stacked double requirements of Kuan Pin ﹑ of the magnetic core that anti-electromagnetic interference uses.
Claims (2)
1. an anti-electromagnetic interference is used the composite soft-magnetic magnetic core, it is characterized in that: comprise bead A (1) and big magnet ring B (2), the external diameter of said bead A (1) is complementary with the internal diameter of big magnet ring B (2), and said bead A (2) is placed in the big magnet ring B (1).
2. a kind of anti-electromagnetic interference as claimed in claim 1 is used the composite soft-magnetic magnetic core, it is characterized in that: said bead A (1) adopts Ferrite Material, and said big magnet ring B (2) adopts metal magnetic heartwood material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200808397U CN202454369U (en) | 2012-03-07 | 2012-03-07 | Composite soft magnet core for resisting electromagnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200808397U CN202454369U (en) | 2012-03-07 | 2012-03-07 | Composite soft magnet core for resisting electromagnetic interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202454369U true CN202454369U (en) | 2012-09-26 |
Family
ID=46870211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200808397U Expired - Lifetime CN202454369U (en) | 2012-03-07 | 2012-03-07 | Composite soft magnet core for resisting electromagnetic interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202454369U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943302A (en) * | 2014-05-04 | 2014-07-23 | 海安县巨力磁材有限责任公司 | Radial anisotropic magnetic ring combination |
| CN103943303A (en) * | 2014-05-04 | 2014-07-23 | 海安县巨力磁材有限责任公司 | Combined radial opposite-polarity magnet ring |
| CN107705954A (en) * | 2017-08-16 | 2018-02-16 | 无锡斯贝尔磁性材料有限公司 | A kind of compound magnet ring of soft magnetism and preparation method thereof |
-
2012
- 2012-03-07 CN CN2012200808397U patent/CN202454369U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943302A (en) * | 2014-05-04 | 2014-07-23 | 海安县巨力磁材有限责任公司 | Radial anisotropic magnetic ring combination |
| CN103943303A (en) * | 2014-05-04 | 2014-07-23 | 海安县巨力磁材有限责任公司 | Combined radial opposite-polarity magnet ring |
| CN107705954A (en) * | 2017-08-16 | 2018-02-16 | 无锡斯贝尔磁性材料有限公司 | A kind of compound magnet ring of soft magnetism and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |
|
| CX01 | Expiry of patent term |