CN203013434U - Power inductor - Google Patents
Power inductor Download PDFInfo
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- CN203013434U CN203013434U CN2012207290872U CN201220729087U CN203013434U CN 203013434 U CN203013434 U CN 203013434U CN 2012207290872 U CN2012207290872 U CN 2012207290872U CN 201220729087 U CN201220729087 U CN 201220729087U CN 203013434 U CN203013434 U CN 203013434U
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- 238000004512 die casting Methods 0.000 claims abstract description 86
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 28
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 24
- 229920005989 resin Polymers 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 5
- 239000012943 hotmelt Substances 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 20
- 238000007747 plating Methods 0.000 description 9
- 238000009713 electroplating Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000003618 dip coating Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000007115 recruitment Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron aluminum silicon Chemical compound 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/361—Electric or magnetic shields or screens made of combinations of electrically conductive material and ferromagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F2017/048—Fixed inductances of the signal type with magnetic core with encapsulating core, e.g. made of resin and magnetic powder
Abstract
The utility model discloses a power inductor which comprises an inner core and a die-casting body, wherein the die-casting body is used for tightly coating the inner core. The inner core is of a coiling structure which is winded by varnished wires. The inner core comprises a main body and an extending portion, wherein the extending portion extends out of the main body. Magnetic metal powders can be die-casted on the inner core in an integrated mode to form the die-casting body. The extending portion exposes opposite end faces of the die-casting body. A metal layer is plated on the surface of each end portion of the die-casting body which corresponds to the extending portion. End portions of the die-casting body can be coated to form electrodes of the power inductor. According to the power inductor, the magnetic metal powders can be integrated in casting mold with the inner core to achieve mass automation production and material cost and employment cost can be greatly reduced; a welding process between a traditional coil and the electrodes is canceled so that potential quality dangers of various problems that welding points are easy to appear and the like in the traditional techniques can be thoroughly overcome. Therefore, finished products can be largely improved in an insulation specialty, a magnetic shielding specialty, a current resistant specialty, a high temperature specialty and cost control.
Description
Technical field
The utility model relates to inductor, relates in particular to a kind of power inductor.
Background technology
Along with developing rapidly of science and technology, comprise that the size of various mobile digital products of mobile phone is more and more less.Due to environmental evolution bring to electromagnetic radiation, intersection interference and electromagnetic pollution control be strict (EMC control test) more and more, inductor is taken on important absorption surging function in circuit, and the anti-current characteristics of power inductor wherein, EMI characteristic also can not meet the requirement in market.The small-size slice power inductance device of Vehicles Collected from Market is not mostly integrated structure, have that inductance value is on the low side, not anti-large electric current, poor reliability and excess Temperature, and the bad Difficulty of EMI characteristic, simultaneously, automaticity is not high, and its recruitment cost height is also the obstacle of industry development.
Have in the industry at present and adopt the integrated power inductor electrode of powder die-casting, its technique of taking is that the inside of powder is imbedded in the hope of fixing in the end of electrode, although this mode is simple, the predicament that can't realize in small size (the following size of 3*2*1) technique has also appearred.Difficult point has: one is that the high strength enamelled wire of diameter below 0.15 can't realize machinery decortication welding not reaching requirement although diameter can weld dielectric voltage withstand from bonding wire below 0.15; It two is because size is little, and buried electrode takies the powder space, causes powder to reduce, and the magnetic energy product of inductance descends, and the coil physical dimension is tied up by electrode, causes anti-current characteristics to descend; It three is that undersized electrode cost is higher, and the accurate degree of the consistency of product electrode size and shape is lower, and is difficult to realize large batch of full-automatic production.
The utility model content
The technical problems to be solved in the utility model is, for the defects of prior art, provides a kind of power inductor.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of power inductor is provided, comprises inner core, closely coat the die-casting body of described inner core; Described inner core is the loop construction that the enamelled wire coiling forms, it comprises that main body reaches from the extended extension of described main body, described die-casting body adopts magnetic metal powder integrated die-casting on described inner core and forms, described extension exposes the opposing end surface of described die-casting body, be coated with metal level on the end surface of the corresponding described extension of described die-casting body, the described end of described die-casting body is coated, to form the electrode of described power inductor.
Described metal level comprises the copper layer.
Described metal level also comprises nickel dam and the tin layer that is plated on successively on described copper layer.
The described extension of described inner core is flat.
The loop construction of described inner core for adopting flat or circular high strength hot melt enamelled wire coiling to form.
The surface of described die-casting body is covered with resin bed, and described resin bed is positioned at below described metal level.
Described resin bed is for adopting epoxy resin to apply the transparent resin layer that forms.
The utility model adopts magnetic metal powder and the moulding of inner core integrated die-casting, can realize automated production in enormous quantities, has greatly reduced material cost and recruitment cost; Conventional coil and interelectrode welding procedure have been cancelled, thoroughly overcome the hidden danger of quality that easily occurs the variety of issues such as solder joint in the traditional handicraft, made insulation characterisitic, magnetic shield property, anti-current characteristics, hot properties and the cost control of finished product significantly be promoted.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in accompanying drawing:
Fig. 1 is the structural representation of power inductor of the present utility model;
Fig. 2 is the structural representation of inner core one embodiment of power inductor shown in Figure 1;
Fig. 3 is the structural representation of another embodiment of inner core of power inductor shown in Figure 1;
Fig. 4 is the manufacture process schematic diagram of power inductor of the present utility model.
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figures 1 and 2, power inductor of the present utility model comprises inner core 2, closely coats the die-casting body 1 of described inner core 2.The loop construction that inner core 2 forms for the enamelled wire coiling, it comprises main body 21 and the extended extension 22 of autonomous agent 21, extension 22 is flat.Die-casting body 1 adopts magnetic metal powder integrated die-casting on inner core 2 and forms, and in wherein, extension 22 exposes the opposing end surface of die-casting body 1 to die-casting body 1 with inner core 2 high density sealing.
Described enamelled wire adopts the enamelled wire of high strength hot melt (high temperature resistant), can be platypelloid type or circular enamelled wire, as shown in Figure 2, and the loop construction of inner core for adopting the coiling of platypelloid type enamelled wire to form; As a kind of selectivity execution mode, as shown in Figure 3, inner core 2 ' also can be the loop construction that circular enamelled wire coiling forms, and its extension 22 ' is flat after processing by flattening.
Described magnetic metal powder is the magnetic metal powder of insulation, it is for through the granularity of insulating wrapped carbonyl iron dust, reduced iron powder, electrolytic iron powder, atomized iron powder and the iron aluminum silicon powder less than 50 microns, the combination of one or more of the iron-based powders such as ferro-silicium powder and high magnetic flux powder, amorphous iron powder, ferrite powder, the die-casting body 1 that is formed by the magnetic metal powder die casting of this insulation has insulating properties.Be coated with metal level 3 on the end surface of the corresponding extension 22 of die-casting body 1, the end of die-casting body 1 is coated, to form the electrode of power inductor, described end comprises the end face that exposes the die-casting body 1 that extension 22 is arranged, and also comprises from this end face to the middle part of extending a section of die-casting body 1.Metal level 3 comprises the copper layer, also comprise the nickel dam and the tin layer that are plated on successively on the copper layer, thereby the extension 22 that exposes die-casting body 1 is combined for chemical metallic bond between metal level 3.In the present embodiment, described die-casting body 1 is cuboid, coats inner core 2 of a loop construction in it, and extend respectively at inner core 2 main body 21 both ends extension 22, exposes respectively the opposite end surface of die-casting body 1.The opposite end section of the corresponding extension 22 of die-casting body 1 is coated with respectively metal level 3, to form electrode.
The surface of die-casting body 1 also is covered with resin bed, and resin bed is for adopting epoxy resin to apply the transparent resin layer that forms.This resin bed is positioned at metal level 3 belows, and coats die-casting body 1 surface, plays moistureproof antirust effect.
The anti-large electric current of this power inductor can extra small size prepare, and size can be below 3.2*2.5*1.Thoroughly solved small size power inductor instantly be difficult to use the high-strength high temperature-resistant enamelled wire with the line restriction, broken through current industry and generally used the drawback that causes poor reliability from bonding wire.
With reference to shown in Figure 4, it be the manufacture process schematic diagram of power inductor of the present utility model, and wherein arrow represents the carrying out of processing sequentially, and the manufacture method of this power inductor can comprise the following steps:
(1), the coiling of employing enamelled wire prepares inner core 2, and allocates the magnetic metal powder.
Can adopt automatic coil winding machine coiling inner core 2, enamelled wire adopts flat or circular high strength hot melt enamelled wire, its coiling is formed loop construction, as inner core 2; With reference to shown in Figure 2, prepared inner core 2 comprises main body 21 and the autonomous agent 21 extended extensions 22 in end, and extension 22 is flat, and it is as the current-carrying part of inner core 2.When adopting flat enamelled wire coiling inner core 2, resulting extension 22 is flat; When adopting circular enamelled wire coiling, with reference to shown in Figure 3, this step (1) comprises that also the extension 22 ' with the inner core 2 ' of circular enamelled wire coiling flattens processing, to obtain the extension 22 ' of flat.Magnetic metal powder tool insulating properties.
(2), inner core 2 is put into the die casting chamber.
When inner core 2 was put into the die casting chamber of die casting machine, the extension 22 of inner core 2 need be through decortication and in the die casting chamber of the die casting film of directly packing into, and because extension 22 is flat, so it plays the effect of perpendicular positioning and horizontal location in the die casting chamber.
(3), insert the magnetic metal powder in the die casting chamber, carry out die casting and hot curing, make the magnetic metal powder closely be coated on inner core 2, form die-casting body 1, the extension 22 of inner core 2 exposes die-casting body 1, as shown in (a) figure in Fig. 4.
In this step, insert the magnetic metal powder in being placed with the die casting chamber of inner core 2, inner core 2 is embedded in the magnetic metal powder fully, adopts ram-jolt die casting to obtain die-casting body 1, with inner core 2 high density sealing in wherein, the various hidden danger of quality that solder joint in the past easily occurs have thoroughly been overcome, make the insulation characterisitic of finished product, magnetic shield property, anti-current characteristics, hot properties, and cost control is significantly promoted.The part that the extension 22 of inner core 2 exposes die-casting body 1 is no more than 1mm, and the remainder of inner core 2 is shielded by the magnetic metal powder fully, makes finished product have good mechanical strength property and magnetic shield property.
Be to obtain the better die-casting body 1 of outward appearance, the die-casting body 1 that obtains after hot curing is carried out burr removing process, obtaining without burr, without the die casting burr, ganoid die-casting body 1.Deflash process can adopt the cylinder method of mechanical rotation, and cost is extremely low, is beneficial to mass disposal.In the present embodiment, obtain rectangular-shaped die-casting body 1 by this step, extension 22 correspondences of inner core 2 are coated in its opposite end section, and the bared end end surface.
Also comprise (3.1) after this step, with die-casting body 1 dip-coating in resin liquid that obtains, dry solidification obtains the die-casting body 1 that the surface is covered with resin bed.Resin liquid preferred epoxy liquid, dip-coating can be under atmospheric conditions or under vacuum, and in the present embodiment, dip-coating under preferred vacuum can prevent better that pore from bubbling.Dry solidification is processed and can be carried out in fluidizing equipment, is beneficial to mass disposal, and adopts vibrations dry solidification (claiming that also fluidized coating wraps), can guarantee that each product obtains sufficient fluidisation and adhesion mutually.Resin bed after curing is transparent resin bed, and is evenly smooth.
Comprise that also step (3.2), the die-casting body 1 that the surface is covered with resin bed carry out pre-electroplating treatment: die-casting body 1 is exposed has the end face of inner core 2 extensions 22 to polish processing, makes extension 22 concordant and be exposed to this opposing end surface of die-casting body 1.The die-casting body 1 that the surface can be covered with resin bed is arranged by feed appliance one by one, carrying out end face by automatic milling termination machine polishes, only grind off inner core 2 when polishing and expose the end of extension 22 and the fraction magnetic metal powder of die-casting body 1 corresponding end face outside, thereby expose the resin bed of the end face of the section of extension 22 and place die-casting body 1 thereof, so that follow-up plating is as shown in (b) figure in Fig. 4.
(4), at the enterprising electroplating metal level 3 of the end surface of the corresponding extension 22 of die-casting body 1, thereby metal level 3 coats the formation electrode with the end of die-casting body 1, makes power inductor.
This step (4) comprising:
(4.1), die-casting body 1 is carried out copper electroplating layer 31, copper layer 31 is combined with chemical metallic bond form with the extension 22 that exposes die-casting body 1 end face, as shown in (c) figure in Fig. 4.Also need before plating to die-casting body 1 clean, activation processing, this cleaning, activation processing adopt the prior art means to implement to get final product.
Electroplating processes can once be carried out in enormous quantities, as take 10000 die-casting bodies 1 to be plated as one batch.During plating, adjust suitable electroplating current and bath temperature, stop after the suitable thickness when copper electroplating layer electroplating, this moment, the extension 22 end section that exposes die-casting body 1 of inner core 2 was combined with chemical metallic bond form with copper layer 31, but not the Type of Welding combination.This plating step has exempted that the cost that existing employing welding procedure brings is high, the drawback of poor reliability, also possesses certain Tensile strength simultaneously.Carry out cleaning-drying after copper electroplating layer 31.
(4.2), the end that will be coated with corresponding inner core 2 extensions 22 of die-casting body 1 of copper layer 31 protects, and die-casting body 1 remaining surface partly carried out corrosion treatment, to remove the copper layer 31 on it.
Guard method can be adopted the termination coating machine, and automation coating protective agent is on the surface at die-casting body 1 both ends in batches, and then dry solidification forms protective layer.As shown in (d) figure in Fig. 4, adopt corrosive agent that die-casting body 1 is corroded, except die-casting body 1 both ends are not corroded, the agent dissolving that is corroded of the copper layer 31 on remainder surface.In the present embodiment, the end of described die-casting body 1 comprises the end face that exposes the die-casting body 1 that extension 22 is arranged, and also comprises the part to one section of the middle extension of die-casting body 1 from this end face, and the remainder of die-casting body 1 is the mid portion between its both ends.Adopt at last the protective layer on paint remover removal die-casting body 1, can carry out follow-up nickel plating operation.
(4.3), carry out nickel plating on the copper layer 31 of the end of die-casting body 1, form nickel dam thereon.The die-casting body 1 that also need treat nickel plating before nickel plating carries out cleaning, so that it possesses the cage of rolling nickel plating condition.
(4.4), carry out zinc-plated processing on nickel dam, thereby form the tin layer on nickel dam, thereby the end of extension 22 die-casting body 1 corresponding with it and metal level 3(comprise copper layer 31, nickel dam and tin layer) be combined to form electrode, make power inductor, as shown in (e) figure in Fig. 4.It is zinc-plated that cage is rolled in zinc-plated operation employing, and zinc-plated is in order to guarantee the solderability of electrode, namely capable of washing, dry after zinc-plated completing, and obtains final finished.
From the above, the utility model power inductor, applicable automated production in enormous quantities, can greatly reduce the recruitment cost, its cost can be existing inductor production technology cost 20% in, material cost reduced by 50%, started Wound-rotor type alloy powder integrally-formed inductor and made new mileage.
Claims (7)
1. a power inductor, is characterized in that, comprises inner core, closely coats the die-casting body of described inner core; Described inner core is the loop construction that the enamelled wire coiling forms, it comprises that main body reaches from the extended extension of described main body, described die-casting body adopts magnetic metal powder integrated die-casting on described inner core and forms, and described extension exposes the opposing end surface of described die-casting body; Be coated with metal level on the end surface of the corresponding described extension of described die-casting body, the described end of described die-casting body coated, to form the electrode of described power inductor.
2. power inductor according to claim 1, is characterized in that, described metal level comprises the copper layer.
3. power inductor according to claim 2, is characterized in that, described metal level also comprises nickel dam and the tin layer that is plated on successively on described copper layer.
4. power inductor according to claim 1, is characterized in that, described extension is flat.
5. power inductor according to claim 1, is characterized in that, the loop construction of described inner core for adopting flat or circular high strength hot melt enamelled wire coiling to form.
6. power inductor according to claim 1, is characterized in that, the surface of described die-casting body is covered with resin bed, and described resin bed is positioned at below described metal level.
7. power inductor according to claim 6, is characterized in that, described resin bed is for adopting epoxy resin to apply the transparent resin layer that forms.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207290872U CN203013434U (en) | 2012-12-26 | 2012-12-26 | Power inductor |
| PCT/CN2013/078226 WO2014101380A1 (en) | 2012-12-26 | 2013-06-27 | Power inductor and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207290872U CN203013434U (en) | 2012-12-26 | 2012-12-26 | Power inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203013434U true CN203013434U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207290872U Expired - Fee Related CN203013434U (en) | 2012-12-26 | 2012-12-26 | Power inductor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203013434U (en) |
| WO (1) | WO2014101380A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050224A (en) * | 2012-12-26 | 2013-04-17 | 王向群 | Power inductor and manufacturing method thereof |
| WO2014101380A1 (en) * | 2012-12-26 | 2014-07-03 | Wang Xiangqun | Power inductor and manufacturing method thereof |
| CN104575946A (en) * | 2013-10-16 | 2015-04-29 | 三星电机株式会社 | Chip electronic component, board having the same, and packaging unit thereof |
| CN107863222A (en) * | 2017-12-20 | 2018-03-30 | 四川长虹电子部品有限公司 | A kind of high-power choke coil of flush type and preparation method thereof |
| CN110310814A (en) * | 2018-03-27 | 2019-10-08 | 三星电机株式会社 | Coil block |
| US20210098186A1 (en) * | 2019-09-30 | 2021-04-01 | Taiyo Yuden Co., Ltd. | Coil component, circuit board, and electronic device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109961922A (en) * | 2019-04-03 | 2019-07-02 | 美磊电子科技(昆山)有限公司 | A kind of the integrated molding die casting inductor structure and its preparation process of top coated conductor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5572180A (en) * | 1995-11-16 | 1996-11-05 | Motorola, Inc. | Surface mountable inductor |
| US6533956B2 (en) * | 1999-12-16 | 2003-03-18 | Tdk Corporation | Powder for magnetic ferrite, magnetic ferrite, multilayer ferrite components and production method thereof |
| WO2009087928A1 (en) * | 2008-01-08 | 2009-07-16 | Murata Manufacturing Co., Ltd. | Open magnetic circuit stacked coil component and process for producing the open magnetic circuit stacked coil component |
| KR101072784B1 (en) * | 2009-05-01 | 2011-10-14 | (주)창성 | Multilayered chip power inductor using the magnetic sheet and the method for manufacturing the same |
| KR101862401B1 (en) * | 2011-11-07 | 2018-05-30 | 삼성전기주식회사 | Layered Inductor and Manufacturing Method fo the Same |
| CN103050224A (en) * | 2012-12-26 | 2013-04-17 | 王向群 | Power inductor and manufacturing method thereof |
| CN203013434U (en) * | 2012-12-26 | 2013-06-19 | 王向群 | Power inductor |
-
2012
- 2012-12-26 CN CN2012207290872U patent/CN203013434U/en not_active Expired - Fee Related
-
2013
- 2013-06-27 WO PCT/CN2013/078226 patent/WO2014101380A1/en active Application Filing
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050224A (en) * | 2012-12-26 | 2013-04-17 | 王向群 | Power inductor and manufacturing method thereof |
| WO2014101380A1 (en) * | 2012-12-26 | 2014-07-03 | Wang Xiangqun | Power inductor and manufacturing method thereof |
| CN104575946A (en) * | 2013-10-16 | 2015-04-29 | 三星电机株式会社 | Chip electronic component, board having the same, and packaging unit thereof |
| CN107863222A (en) * | 2017-12-20 | 2018-03-30 | 四川长虹电子部品有限公司 | A kind of high-power choke coil of flush type and preparation method thereof |
| CN110310814A (en) * | 2018-03-27 | 2019-10-08 | 三星电机株式会社 | Coil block |
| US11158453B2 (en) | 2018-03-27 | 2021-10-26 | Samsung Electro-Mechanics Co., Ltd. | Coil component |
| CN110310814B (en) * | 2018-03-27 | 2022-09-13 | 三星电机株式会社 | Coil component |
| US20210098186A1 (en) * | 2019-09-30 | 2021-04-01 | Taiyo Yuden Co., Ltd. | Coil component, circuit board, and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014101380A1 (en) | 2014-07-03 |
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