CN202887902U - Molding power inductance component - Google Patents
Molding power inductance component Download PDFInfo
- Publication number
- CN202887902U CN202887902U CN201220472422.5U CN201220472422U CN202887902U CN 202887902 U CN202887902 U CN 202887902U CN 201220472422 U CN201220472422 U CN 201220472422U CN 202887902 U CN202887902 U CN 202887902U
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- magnetic core
- power inductance
- inductance component
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Abstract
The utility model discloses a molding power inductance component which comprises a prefabricated magnetic core, a wire coil placed on the prefabricated magnetic core and a magnetic plastic sealing layer covering the magnetic core and the wire coil. An electrode connected with the wire coil is exposed outside. The power inductance product has the advantages of being thin, small in size and high in reliability.
Description
Technical field
The utility model relates to a kind of molded power inductance component.
Background technology
Along with the development of IC its technical, it is miniaturization, slimming, high frequency, low DCR, large electric current, low EMI(electromagnetic interference that power-type inductors is required generally) and low manufacturing cost.Traditional handicraft type power inductance is such as open-flux path or open air gap magnetosheath formula inductance and more and more can not satisfy the IC demand for development.
For common open-flux path power inductance product, although can accomplish higher frequency of utilization, the dimensions of device own and quality are larger, and have serious EMI problem.
For adding magnet ring or magnetic bucket formula closed magnetic circuit winding power inductor product, although can solve preferably the EMI problem, the product rated current can also be accomplished largely, but the device frequency of utilization is lower, overlapping characteristic is relatively poor, and manufacturing cost is high, and the anti-mechanical shock of product and jolt capacity are relatively poor.
Developed the closed magnetic circuit power inductance of following several technology types thereupon.
Mould pressing process: coil is put into the mould pressing die cavity, insert the insulation magnetic powder particle, then at certain pressure intensity and temperature conditions compacted under.General forming temperature at 100 ~ 550 ℃, pressure at 500 ~ 1000MPa.Known mold pressing integrated inductance magnet magnetic permeability is between 10 ~ 40, and typed pressure greatly mainly is in order to improve the magnet magnetic permeability.Because higher pressure, magnetic can produce great force to built-in winding, can cause that winding deformation causes electrical characteristic to disperse, cause the enamel-cover membrane damage and then causes the larger short-circuit risks of holding.Because the limitation of shaping mechanism, the size of product is restricted, and it is 2.5mm * 2.0mm * 1.2mm that existing industry is used the dimension limit of this explained hereafter.
Magnetic glue coating processes: for the I shape winding, by point gum machine, magnetic glue is coated on coil surface, then curing molding under certain condition.Because glue has flowability, must be I shape for requirement on the core shapes, yet can produce impact to the up and down blade of I-type magnetic core and then cause cracking because glue curing is shunk or crossed the Reflow Soldering expansion process, this problem can thin small sized product embody comparatively serious, further reduce with product size in addition, the difficulty of glue coated can increase greatly, has therefore also limited this technique for thinner smaller szie future development.
Magnetic thermal shrinkable sleeve technique: be inserted in the magnetic thermal shrinkable sleeve at winding and combine closely with built-in winding after by heat shrink.Built-in winding generally is I shape or clavate, and thermal shrinkable sleeve is enclosed within on the winding, shrinks by thermal shrinkable sleeve after the heat treatment to be close to moulding on the winding.Wherein the shrinkage degree difference of thermal shrinkable sleeve can have influence on and be close to degree, so shaped article electrical characteristic fluctuation is larger.The assembling of thermal shrinkable sleeve has also limited automated production in addition.In addition for small sized product more, to the production of magnetic thermal shrinkable sleeve also difficult the realization, the assembling difficulty also increases greatly.
The utility model content
The purpose of this utility model is to provide a kind of molded power inductance component, overcomes the defects of prior art.
For achieving the above object, the utility model is by the following technical solutions:
A kind of molded power inductance component comprises prefabricated magnetic core, is placed in coil and the molded magnetic plastic seal that is covered on described magnetic core and the coil on the described prefabricated magnetic core, outside the electrode that links to each other with described coil is exposed to.
Described prefabricated magnetic core can be I-shaped magnetic core, and described magnetic plastic seal coats leaf and magnetic core center pillar on the I-shaped of described magnetic core, and the outside of the I-shaped inferior lobe of described magnetic core and bottom-exposed are outside.
Described I-shaped magnetic core bottom can be provided with two parallel pole grooves, is formed with metal layer in the described slot electrode, and two exits of the coil on the described magnetic core center pillar are received respectively in the one in two slot electrodes.
Described prefabricated magnetic core also can be T shape magnetic core, and described magnetic plastic seal covers the side of extending the magnetic core center pillar of T shape base and coats described magnetic core center pillar.
Described base can be for there being the cuboid of rescinded angle seamed edge at a pair of diagonal angle, described cuboid with the respective side of corresponding rescinded angle seamed edge adjacency on metal-foil-clad, be inserted in two exits at the flatwise coil of described magnetic core center pillar and bend respectively the one be close in the two rescinded angle seamed edges and be connected on the metal forming by Resistance Welding.
The global shape of described prefabricated magnetic core can be T shape, clavate or I-shaped.
Described magnetic core center pillar cross sectional shape can be square, rectangle, ellipse, circle or racetrack.
The technique effect that the utility model is useful is:
Settle winding at prefabricated magnetic core, such benefit is that coil can access the fixing of prefabricated magnetic core, add molded magnetic plastic seal parcel internal magnetic core winding, coil is not easy displacement, distortion, and therefore inductance of the present utility model has better electrically consistency.Because coil has obtained the support of prefabricated magnetic core, and in the forming process of magnetic plastic seal, the enamel-cover film of coil also is not easy impaired, therefore inductance reliability of the present utility model is higher in addition.There is not air gap in the structure of this inductance between inside and outside magnetic medium, and can keep higher sense value and higher DC stacked performance under larger current conditions.
The utility model is owing to being to adopt prefabricated magnetic core, can provide magnetic permeability the larger for example magnetic core between 90 ~ 500, therefore reaching in the inductance value situation identical with the mold pressing integrated inductance, the utility model can suitably reduce for the molded pressure of magnetic plastic seal, for example 0 ~ 300MPa.The slimming of power inductance product and miniaturization require the internal coil wire diameter thinner, and the typed pressure of magnetic plastic seal is less in the utility model, therefore more are applicable to realize slimming and the miniaturization of power inductance product.
Description of drawings
Figure 1A 1,1A2 are prefabricated magnetic core schematic diagrames of embodiment;
Figure 1B is that an embodiment coil winding forms built-in winding schematic diagram at prefabricated magnetic core;
Fig. 1 C is that an embodiment magnetic plastic seal forms schematic diagram;
Fig. 1 D is an embodiment finished product outline drawing;
Fig. 2 A is the prefabricated magnetic core schematic diagram of another embodiment;
Fig. 2 B is another embodiment opposing connection flatwise coil schematic diagram;
Fig. 2 C is that another embodiment coil is placed in prefabricated magnetic core and forms built-in winding schematic diagram;
Fig. 2 D is another embodiment aluminium foil structure schematic diagram;
Fig. 2 E is that another embodiment magnetic plastic seal forms schematic diagram;
Fig. 2 F is another embodiment finished product outline drawing.
Embodiment
By reference to the accompanying drawings the utility model is further described in detail by the following examples.
The composition structure of the molded power inductance component of an embodiment is shown in Figure 1A 1-Fig. 1 D.
Shown in Figure 1A 1,1A2, can adopt Shooting Technique to make NiZn ferrite I-shaped magnetic core, magnetic permeability is preferred 3000 ~ 5000, saturation flux 400 ~ 500mT.Preferably, two parallel pole grooves 101,102 are arranged at this magnetic core bottom.Slot electrode inside preferably forms metal layer 103,104 by sputtering technology.
Can adopt coil winding machine to wind the line at above-mentioned I-type magnetic core center pillar 105.As shown in Figure 1B, preferably, coil exit 106,107 was received in the slot electrode 101,102 after the coil winding product were finished.
Fig. 1 C is the product of the finishing schematic diagram of magnetic plastic seal parcel winding aftershaping.On the good magnetic core of coiling by molded covering magnetic plastic seal 108.Leaf and magnetic core center pillar 105 on the I-shaped of the described magnetic core of magnetic plastic seal 108 coatings are outside the I-shaped inferior lobe of described magnetic core is exposed to.
Contained magnetic is preferably carbonyl iron dust in the magnetic plastic seal 108, and former powder is through passivation and insulation processing, and particle diameter D50 is preferably 4 μ m; Magnetic plastic packaging material magnetic solid content is preferably between 60 ~ 90wt%; Organic binder bond preferably adopts the FJNH-9803-5 silicones, and content is preferably between 10 ~ 40wt%; Curing agent is preferably 582-2 amino resins resin, and hardener dose is preferably the 6wt% of silicones content; The preferred last total weight 0.2wt% dolomol that adds carries out homogenization.The magnetic plastic packaging material that preparation is finished, at the peripheral magnetic plastic seal that forms of coil windings shown in Figure 1B, briquetting pressure is preferably 0 ~ 100MPa by moulding technology, and then preferably baking is solidified plastic packaging layer organic principle through 150 ℃/1H.Preferred last wicking forms SMD external electrode terminals 109 and 119.Fig. 1 D is depicted as the outline drawing that preferred embodiment is finished product.
The composition structure of the molded power inductance component of another embodiment is shown in Fig. 2 A-Fig. 2 F.
Shown in Fig. 2 A, also can adopt stamping of powder technique to make the T-shaped prefabricated magnetic core of metal soft magnetic alloy, preferred magnetic permeability 90 ~ 150, saturation flux 10000 ~ 15000mT, the preferred carbonyl iron dust of T-shaped magnetic core material.
Preferably, the base of this prefabricated T-shaped magnetic core is cuboid, and cuboid has respectively rescinded angle seamed edge 201,202 on a pair of diagonal angle, sticks aluminium foil 203,204 at the adjacent relative side of this seamed edge.Relative side is preferably the shorter lateral sides of cuboid.
Can form first the opposing connection flatwise coil of Fig. 2 B shape by the opposing connection machine, have two exits 205,206.
Opposing connection flatwise coil shown in Fig. 2 B can be inserted in the center pillar of prefabricated T-shaped magnetic core in 207.Two exits 205,206 respectively bending are close to and are faced limit 201,202.Then by electric resistance welding two exits 205,206 are welded on the aluminium foil 203,204, form structure shown in Fig. 2 C.Fig. 2 D is depicted as the structure of aluminium foil.
Fig. 2 E is the product of the finishing schematic diagram of magnetic plastic seal 208 parcel winding aftershapings.Package on the magnetic core of coil by molded covering magnetic plastic seal 208.Magnetic plastic seal 208 covers the side of extending magnetic core center pillar 207 of T shape base and coats magnetic core center pillar 207.
Contained magnetic is preferably FeSiCr soft magnetic metal powder in the magnetic plastic seal 208, and former powder is through passivation and insulation processing, and particle diameter D50 is 30 μ m.Magnetic plastic packaging material magnetic solid content is preferably between 80 ~ 97wt%; Organic binder bond preferably adopts the FJNH-9803-5 silicones, and content is preferably between 3 ~ 20 wt%; Curing agent is preferably 582-2 amino resins resin, and hardener dose is preferably the 6wt% of silicones content.The magnetic plastic packaging material that preparation is finished, at the peripheral magnetic plastic seal 208 that forms of coil windings shown in Fig. 2 C, briquetting pressure is preferably 100 ~ 300MPa by moulding technology, and then preferably baking is solidified north seal organic principle through 150 ℃/1H.Then preferably coat conducting resinl at 205,206 exits and aluminium foil 203,204 solder joint place, rear formation conductive layer 209,210 is heating and curing.Fig. 2 F is depicted as the outline drawing that preferred embodiment is finished product.
Power inductance component kind of the present utility model is applicable to the electronic products such as digital camera, mobile phone, computer, television set, set-top box, game machine, automotive electronics, LED illumination.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that implementation of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (7)
1. a molded power inductance component is characterized in that, comprises prefabricated magnetic core, is placed in coil and the molded magnetic plastic seal that is covered on described magnetic core and the coil on the described prefabricated magnetic core, outside the electrode that links to each other with described coil is exposed to.
2. molded power inductance component as claimed in claim 1, it is characterized in that, described prefabricated magnetic core is I-shaped magnetic core, and described magnetic plastic seal coats leaf and magnetic core center pillar on the I-shaped of described magnetic core, and the outside of the I-shaped inferior lobe of described magnetic core and bottom-exposed are outside.
3. molded power inductance component as claimed in claim 2, it is characterized in that, described I-shaped magnetic core bottom is provided with two parallel pole grooves, is formed with metal layer in the described slot electrode, and two exits of the coil on the described magnetic core center pillar are received respectively in the one in two slot electrodes.
4. molded power inductance component as claimed in claim 1 is characterized in that, described prefabricated magnetic core is T shape magnetic core, and described magnetic plastic seal covers the side of extending the magnetic core center pillar of T shape base and coats described magnetic core center pillar.
5. molded power inductance component as claimed in claim 4, it is characterized in that, described base is for there being the cuboid of rescinded angle seamed edge at a pair of diagonal angle, described cuboid with the respective side of corresponding rescinded angle seamed edge adjacency on metal-foil-clad, be inserted in two exits at the flatwise coil of described magnetic core center pillar and bend respectively the one be close in the two rescinded angle seamed edges and be connected on the metal forming by Resistance Welding.
6. molded power inductance component as claimed in claim 1 is characterized in that, the global shape of described prefabricated magnetic core is T shape, clavate or I-shaped.
7. molded power inductance component as claimed in claim 1 is characterized in that, the magnetic core center pillar cross sectional shape of described prefabricated magnetic core is square, rectangle, ellipse, circle or racetrack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220472422.5U CN202887902U (en) | 2012-09-17 | 2012-09-17 | Molding power inductance component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220472422.5U CN202887902U (en) | 2012-09-17 | 2012-09-17 | Molding power inductance component |
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| Publication Number | Publication Date |
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| CN202887902U true CN202887902U (en) | 2013-04-17 |
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| CN201220472422.5U Expired - Lifetime CN202887902U (en) | 2012-09-17 | 2012-09-17 | Molding power inductance component |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856037A (en) * | 2012-09-17 | 2013-01-02 | 深圳顺络电子股份有限公司 | Power inductance element formed by molding and manufacturing method thereof |
| CN103714945A (en) * | 2013-12-25 | 2014-04-09 | 黄伟嫦 | Electronic component and manufacturing method thereof |
| CN103915236A (en) * | 2014-04-01 | 2014-07-09 | 黄伟嫦 | Novel inductor and manufacturing method thereof |
| CN104616878A (en) * | 2014-12-30 | 2015-05-13 | 深圳顺络电子股份有限公司 | Miniature compression molding inductance element and manufacturing method thereof |
| CN104700981A (en) * | 2013-12-09 | 2015-06-10 | 卓英社有限公司 | Surface mount device type inductor and method of manufacturing the same |
| CN105529135A (en) * | 2016-03-01 | 2016-04-27 | 温州沃斯托科技有限公司 | Surface-mount transducer device |
| CN105575621A (en) * | 2014-10-31 | 2016-05-11 | 三星电机株式会社 | Coil component assembly and coil component |
| CN109585149A (en) * | 2017-09-26 | 2019-04-05 | 绿点高新科技股份有限公司 | The preparation method and its product of inductor |
| CN109754986A (en) * | 2019-01-28 | 2019-05-14 | 深圳顺络电子股份有限公司 | A kind of ejection formation inductance and its manufacturing method |
| CN111508685A (en) * | 2020-03-30 | 2020-08-07 | 深圳顺络电子股份有限公司 | Plastic mold power inductance element and manufacturing method thereof |
| CN114078620A (en) * | 2020-08-14 | 2022-02-22 | 乾坤科技股份有限公司 | Electric element and manufacturing method thereof |
-
2012
- 2012-09-17 CN CN201220472422.5U patent/CN202887902U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856037A (en) * | 2012-09-17 | 2013-01-02 | 深圳顺络电子股份有限公司 | Power inductance element formed by molding and manufacturing method thereof |
| CN102856037B (en) * | 2012-09-17 | 2016-09-21 | 深圳顺络电子股份有限公司 | Molded power inductance component and manufacture method |
| CN104700981A (en) * | 2013-12-09 | 2015-06-10 | 卓英社有限公司 | Surface mount device type inductor and method of manufacturing the same |
| CN103714945A (en) * | 2013-12-25 | 2014-04-09 | 黄伟嫦 | Electronic component and manufacturing method thereof |
| EP3249661A1 (en) * | 2014-04-01 | 2017-11-29 | Würth Elektronik Eisos Gmbh & CO. KG | Inductor |
| CN103915236A (en) * | 2014-04-01 | 2014-07-09 | 黄伟嫦 | Novel inductor and manufacturing method thereof |
| US10614950B2 (en) | 2014-10-31 | 2020-04-07 | Samsung Electro-Mechanics Co., Ltd. | Coil component assembly for mass production of coil components and coil components made from coil component assembly |
| CN105575621A (en) * | 2014-10-31 | 2016-05-11 | 三星电机株式会社 | Coil component assembly and coil component |
| US10049808B2 (en) | 2014-10-31 | 2018-08-14 | Samsung Electro-Mechanics Co., Ltd. | Coil component assembly for mass production of coil components and coil components made from coil component assembly |
| CN104616878A (en) * | 2014-12-30 | 2015-05-13 | 深圳顺络电子股份有限公司 | Miniature compression molding inductance element and manufacturing method thereof |
| CN105529135A (en) * | 2016-03-01 | 2016-04-27 | 温州沃斯托科技有限公司 | Surface-mount transducer device |
| CN109585149A (en) * | 2017-09-26 | 2019-04-05 | 绿点高新科技股份有限公司 | The preparation method and its product of inductor |
| CN109754986A (en) * | 2019-01-28 | 2019-05-14 | 深圳顺络电子股份有限公司 | A kind of ejection formation inductance and its manufacturing method |
| CN109754986B (en) * | 2019-01-28 | 2024-01-05 | 东莞顺络电子有限公司 | Injection molding inductor and manufacturing method thereof |
| CN111508685A (en) * | 2020-03-30 | 2020-08-07 | 深圳顺络电子股份有限公司 | Plastic mold power inductance element and manufacturing method thereof |
| WO2021196447A1 (en) * | 2020-03-30 | 2021-10-07 | 深圳顺络电子股份有限公司 | Plastic molded power inductance element and manufacturing method |
| CN111508685B (en) * | 2020-03-30 | 2021-10-19 | 深圳顺络电子股份有限公司 | Plastic mold power inductance element and manufacturing method thereof |
| CN114078620A (en) * | 2020-08-14 | 2022-02-22 | 乾坤科技股份有限公司 | Electric element and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |