CN104979079A - Pot-type magnetic core cell and pot-type magnetic core containing same - Google Patents
Pot-type magnetic core cell and pot-type magnetic core containing same Download PDFInfo
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- CN104979079A CN104979079A CN201410138383.9A CN201410138383A CN104979079A CN 104979079 A CN104979079 A CN 104979079A CN 201410138383 A CN201410138383 A CN 201410138383A CN 104979079 A CN104979079 A CN 104979079A
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Abstract
The present invention belongs to the technical field of inductor design and provides a pot-type magnetic core cell. The pot-type magnetic core cell comprises a circular bottom plate with a center hole, a C-shaped annular pot wall which is provided with an opening and is mounted on the circular bottom plate, and a hollow winding column disposed at the center hole of the circular bottom plate. An annular clearance is formed by the hollow winding column and the pot wall. A wire outlet groove is disposed on the circular bottom plate at a position corresponding to the opening of the pot wall. An outer frame is formed by the bottom plate and the pot wall. Compared with the prior art, the magnetic core cell has the beneficial effects that the magnetic core cell is slow in warming up on the surface, has a long service life, and is simple in structure, easy in processing, convenient in winding, suitable for mechanized production, easy in controlling costs and wide in application. The present invention also provides a pot-type magnetic core, comprising two pot-type magnetic core cells. The two pot-type magnetic core cells are arranged to form a structure in which the bottom plates face the outside and the openings are superposed towards each other.
Description
Technical field
The invention belongs to inductor design technical field, relate to a kind of pot magnetic core monomer and comprise its pot magnetic core.
Background technology
The magnetic elements such as traditional reactor, inductor, transformer generally are the shape such as annular, EE, EI, ETD.Adopt loop configuration, advantage is that overall is closed magnetic loop, and leakage flux is relatively little, and magnetic is close relatively more even, and magnetic core overall utilization rate is higher, but its shortcoming is that coiling bothers, and often needs manual operation, well can not carry out automated production; Adopt EE, EI, ETD shape and structure, advantage is that processing is simple, is convenient to automated production, but easily causes the generation of leakage field, edge flux.
Therefore, be necessary the technical scheme that improvement is provided, to overcome the technical problem existed in prior art.
Summary of the invention
The object of the present invention is to provide the magnetic core magnetic element of a kind of energy electromagnetic compatibility, superior performance.
For achieving the above object, the invention provides a kind of pot magnetic core monomer, comprise with centre bore circular bottom plate, be arranged on the tank skin of C-shaped open circles ring-type in circular bottom plate, the hollow windings post of the central hole be arranged on base plate; Described hollow windings post and described tank skin form annular spaces; The circular bottom plate being positioned at described tank skin opening part corresponding is provided with line outlet groove; Described base plate and tank skin form housing;
In Material selec-tion, comprise following three kinds of structures:
The first, described hollow windings post and housing are that magnetic material of the same race is made.
The second, described hollow windings post and housing form for magnetic material manufacture not of the same race.
The third. described housing is single magnetic material structures, and described hollow windings post is single magnetic material structures or multiple magnetic material composite construction.
Wherein, described housing used magnetic material comprises HTC200 powder core, FeSi, FeSiAl, FeSiNi, FeNi, FeNiMo, KAH, KAM; Described hollow windings post material therefor comprises HTC200 powder core, FeSi, FeSiAl, FeSiNi, FeNi, FeNiMo, KAH, KAM, ferrite, amorphous, silicon steel sheet.
The first structure, so design can obtain higher DC-Bias characteristic, thus under certain prerequisite, can reduce cost of manufacture, comprising copper cash cost and material cost, and it can be made more miniaturized, improves space efficiency utilization.
The second structure, make structure more flexible, such methods are more flexible,, temperature rise comparatively large in loss is higher, can change hollow windings post and outer frame material, the preferential hollow windings post that changes is relatively more rational, because be coiling position at hollow windings post, area of dissipation and space less, the less material of specific loss therefore can be adopted to carry out reasonable disposition.
The third structure, comparatively the second structure is more flexible, by by further for hollow windings post refinement, forms multiple material composite construction, more effectively can balance the control of cost and the optimization of working effect.
Present invention also offers a kind of pot magnetic core, comprise two pot magnetic core monomers, described two pot magnetic core monomers be base plate outwardly, opening stacked structure in the same way.
Preferably, be provided with between two pot magnetic core monomers and add high level.When high-power reactance, inductance component application, the electric current passed through is sizable, high-frequency alternating loss simultaneously becomes large equally, such when need ensure necessarily to design sensibility reciprocal, will consider to change the condition such as magnetic structure, number of turns, and increase magnetic core and can increase le, under balance design condition, can low h value be fallen, thus promote loading sensibility reciprocal.Locus increases, and the temperature rise that loss brings can obtain partial rcsponse by the increase of area of dissipation.
Compared with prior art, beneficial effect of the present invention is:
Magnetic core surface is heated up slow, long service life, and structure is simple, is easy to processing, and coiling is convenient, is suitable for mechanization production, and cost is easy to control, applied range.
Accompanying drawing explanation
Fig. 1 is the structural representation of pot magnetic core monomer of the present invention.
Fig. 2 is the structural representation of pot magnetic core of the present invention.
Fig. 3 is the structural representation with adding high-rise pot magnetic core.
Fig. 4 is the structural representation of the pot magnetic core that hollow windings post part designs for composite structure.
Wherein, 1, hollow windings post
2, tank skin
3, annular spaces
4, line outlet groove
5, base plate
6, high level is added
Embodiment
With reference to Fig. 1, pot magnetic core monomer provided by the invention comprise with centre bore circular bottom plate, be arranged on the tank skin of C-shaped open circles ring-type in circular bottom plate, the hollow windings post of the central hole be arranged on base plate; Hollow windings post and tank skin form annular spaces; The circular bottom plate being positioned at tank skin opening part corresponding is provided with line outlet groove; Base plate and tank skin form housing.
With reference to Fig. 2, pot magnetic core provided by the invention be in base plate outwardly, the tank body that forms of two pot magnetic core monomers of opening stacked structure in the same way.
With reference to Fig. 3, another kind of pot core structure provided by the invention, is provided with and adds high level between two pot magnetic core monomers.
Embodiment 1
With reference to Fig. 2, the housing of pot magnetic core and hollow windings post are a kind of material NF60 (FeSiSeries), and its specific performance through test performance is as table 1:
Table 1
Form lists some magnetic property characteristics of pot magnetic core, and inductance value, DC loading characteristic, core loss etc., illustrate typical loss characteristic curve and DC-Bias characteristic curve below.
Table 2 is loss characteristics curve
Table 3 is DC-Bias characteristic curve
Be described table 2 and table 3 with upper part to the electrical characteristic of pot magnetic core in embodiment 1 to describe it and there is relatively low core loss characteristic and high DC is biased ability.Especially above DC-Bias, when HDC is 200Oe, DC is biased ability more than 65%, this performance is few in number in metal magnetic powder core, therefore also showed its be applied in high-power particularly big current condition under remarkable superiority, material and usage space be can effectively save, equipment safety and reliability and miniaturization made.In the present embodiment, pot magnetic core also can use other material to make, as HTC200 powder core, FeSiAl, FeSiNi, FeNi, FeNiMo, KAH, KAM etc., be not limited to NF60 (FeSiSeries) material, different materials has different electromagnetic propertys, can carry out the high product of designing and making cost performance according to particular requirement.
Embodiment 2
With reference to Fig. 4, the housing of pot magnetic core adopts NF60 (FeSiSeries) material, hollow windings post is then made up of NF60 (FeSiSeries) and S60 (FeSiAlSeries) bi-material compound, and its specific performance through test performance is as table 4:
Table 4
Form lists some magnetic property characteristics of the pot magnetic core of embodiment 2, inductance value, DC loading characteristic, core loss etc., characteristic curve has below carried out comparison to the core loss of the pot magnetic core of the pot magnetic core of the present embodiment and single material embodiment 1 and DC-Bias:
Table 5 is loss characteristic comparison curve
Table 6 is DC-Bias characteristic comparison curve
The hollow windings post of this example to magnetic tank magnetic core improves, be transformed to complex configuration, have employed FeSiAl (S60) and FeSi (NF60) carries out combination collocation, make use of the low loss characteristic of iron silica-alumina material and the high DC biasing characteristic of iron silicon materials respectively, is comparatively reasonable and appropriate.In some particular technology occasions, can accomplish loss and DC-Bias both take into account, product temperature rise can well be reduced, and advantageously in the small integrated of equipment.
Embodiment 3
With reference to Fig. 2, the pot magnetic core housing of the present embodiment adopts NF60 (FeSi Series) material, hollow windings post then adopts S60 (FeSiAlSeries) material, and its major advantage is that loss obviously reduces on the basis of embodiment 1, and material cost can decline to some extent.Design input electric condition: Irms/35A, Li:125 μ H, switching frequency: 5kHz, litz10mm
2/ 23Ts inversion output inductor device, under this Conditions Condition, utilize PC, the pot magnetic core of embodiment 1 and the pot Magnetic Core Design of embodiment 2 can meet loading sensibility reciprocal needs in fact, after comprehensive assessment, paid the utmost attention to the pot magnetic core of the present embodiment, following table is frequency of utilization 5kHz, the loss logarithmic curve under different AC magnetism density case:
Table 7 is loss characteristic curve
Be set to the high frequency ripple composition of 20%, carry out analysis according to △ BNA=Li △ I to calculate, can know that both have very big difference at the Pcv of operating point location by contrast, comparatively the former have dropped about 43% to the pot magnetic core of the present embodiment, therefore this kind of design can make magnetic core overall losses and temperature rise have obviously decline and improve, and improves complete machine service efficiency.
This example illustrates under different environments for use, composite optimization apolegamy can be carried out to pot magnetic core, not only be confined to a certain single material, can be calculated by the contrast of various material behavior, electrical analysis, carry out complex configuration use, thus the running status making circuit reach best, accomplish that thing is cheap beautiful.
Embodiment 4
With reference to Fig. 3, the pot magnetic core housing of the present embodiment and hollow windings column material are NF60 (FeSiSeries), carry out superposition heightening design, form by adding high-rise and standard overall fit structure, design input electric condition is IDC:60A, Li:395 μ H filter inductor, adopt PC100Series, pot magnetic core obviously in embodiment 1 can not meet actual requirement, because inner space is inadequate, the copper cash of multiturn is difficult to winding and enters, therefore the present embodiment have employed the pot magnetic core heightening design be equivalent in embodiment 1, coiling adopts: litz16mm
2/ 50TS, analytical calculation: L0=AL*N
2/ 1000=510 μ H, H=0.4*3.14*N*I/le=109.4Oe, under this magnetic field condition, DC is biased percentage and is about 85.0%, calculates and loads sensibility reciprocal Li=L0*0.85=433.5 μ H, calculating sensibility reciprocal after loading is be greater than electrical design input sensibility reciprocal condition 395 μ H, therefore meets design requirement.
The magnetic material be designed in above embodiment can also adopt other as the material such as HTC200 powder core, FeSiAl, FeSiNi, FeNi, FeNiMo, KAH, KAM.
Claims (6)
1. a pot magnetic core monomer, it is characterized in that, comprise with centre bore circular bottom plate (5), be arranged on circular bottom plate (5) the upper tank skin (2) of C-shaped open circles ring-type, the hollow windings post (1) of the central hole be arranged on base plate (5); Described hollow windings post (1) and described tank skin (2) form annular spaces (3); The circular bottom plate (5) being positioned at described tank skin (2) opening part corresponding is provided with line outlet groove (4); Described base plate (5) and tank skin (2) form housing.
2. pot magnetic core monomer according to claim 1, is characterized in that: described hollow windings post (1) and housing are that magnetic material of the same race is made.
3. pot magnetic core monomer according to claim 1, is characterized in that: described hollow windings post (1) and housing form for magnetic material manufacture not of the same race.
4. pot magnetic core monomer according to claim 1, is characterized in that: described housing is single magnetic material structures, and described hollow windings post (1) is single magnetic material structures or multiple magnetic material composite construction.
5. the pot magnetic core monomer according to Claims 2 or 3 or 4, is characterized in that: described housing used magnetic material comprises HTC200 powder core, FeSi, FeSiAl, FeSiNi, FeNi, FeNiMo, KAH, KAM; Described hollow windings post (1) material therefor comprises HTC200 powder core, FeSi, FeSiAl, FeSiNi, FeNi, FeNiMo, KAH, KAM, ferrite, amorphous, silicon steel sheet.
6. a pot magnetic core, is characterized in that: comprise two pot magnetic core monomers, described two pot magnetic core monomers be base plate (5) outwardly, opening stacked structure in the same way.
Pot magnetic core according to claim 6, is characterized in that: be provided with between two pot magnetic core monomers and add high level (6).
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| CN201410138383.9A CN104979079A (en) | 2014-04-08 | 2014-04-08 | Pot-type magnetic core cell and pot-type magnetic core containing same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233544A (en) * | 2017-11-30 | 2018-06-29 | 金华市蓝海光电技术有限公司 | It is a kind of that wireless power and photoelectricity transmission communication agency are realized using pot magnetic core |
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| CN202633022U (en) * | 2012-05-11 | 2012-12-26 | 益阳市新纪元粉末冶金有限公司 | Semi-spliced soft magnetic tank body for powder metallurgy |
| CN203118729U (en) * | 2012-12-20 | 2013-08-07 | 清流县鑫磁线圈制品有限公司 | Novel UUI magnetic core |
| CN203165627U (en) * | 2013-03-28 | 2013-08-28 | 日照亿鑫电子材料有限公司 | Locating magnetic ring magnetic core applied to miniature inducer |
| CN203966760U (en) * | 2014-04-08 | 2014-11-26 | 浙江科达磁电有限公司 | A kind of tank type magnetic core monomer and the tank type magnetic core that comprises it |
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2014
- 2014-04-08 CN CN201410138383.9A patent/CN104979079A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6334909A (en) * | 1986-07-29 | 1988-02-15 | Toko Inc | Inductance element |
| CN101256878A (en) * | 2007-11-19 | 2008-09-03 | 湖州磁性材料研究所 | Inductive element and manufacturing method thereof |
| CN102822918A (en) * | 2010-03-20 | 2012-12-12 | 大同特殊钢株式会社 | Reactor and method of manufacture for same |
| CN202102841U (en) * | 2011-06-03 | 2012-01-04 | 北京英博电气股份有限公司 | Assembled single-phase reactor |
| CN202352438U (en) * | 2011-09-27 | 2012-07-25 | 唐山尚新融大电子产品有限公司 | Combined can type magnetic core inductor |
| CN202633022U (en) * | 2012-05-11 | 2012-12-26 | 益阳市新纪元粉末冶金有限公司 | Semi-spliced soft magnetic tank body for powder metallurgy |
| CN202585028U (en) * | 2012-05-24 | 2012-12-05 | 绵阳市维奇电子技术有限公司 | Open pore pot-shaped magnetic core for switch transformer |
| CN203118729U (en) * | 2012-12-20 | 2013-08-07 | 清流县鑫磁线圈制品有限公司 | Novel UUI magnetic core |
| CN203165627U (en) * | 2013-03-28 | 2013-08-28 | 日照亿鑫电子材料有限公司 | Locating magnetic ring magnetic core applied to miniature inducer |
| CN203966760U (en) * | 2014-04-08 | 2014-11-26 | 浙江科达磁电有限公司 | A kind of tank type magnetic core monomer and the tank type magnetic core that comprises it |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108233544A (en) * | 2017-11-30 | 2018-06-29 | 金华市蓝海光电技术有限公司 | It is a kind of that wireless power and photoelectricity transmission communication agency are realized using pot magnetic core |
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