CN109509613A - A kind of integrally-formed inductor - Google Patents
A kind of integrally-formed inductor Download PDFInfo
- Publication number
- CN109509613A CN109509613A CN201811462943.0A CN201811462943A CN109509613A CN 109509613 A CN109509613 A CN 109509613A CN 201811462943 A CN201811462943 A CN 201811462943A CN 109509613 A CN109509613 A CN 109509613A
- Authority
- CN
- China
- Prior art keywords
- pedestal
- coil
- integrally
- formed inductor
- inductor according
- 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.)
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Classifications
-
- 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
- H01F27/08—Cooling; Ventilating
-
- 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
- H01F27/02—Casings
-
- 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
- H01F27/02—Casings
- H01F27/022—Encapsulation
-
- 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
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- 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
Abstract
The invention discloses a kind of integrally-formed inductors, including pedestal, coil pin and prefabricated coil, the pedestal includes upper pedestal and lower base, the upper pedestal carries out die casting with lower base and combines, the pedestal is made of metallic magnetic powder die casting, the pedestal internal structure is added with alloyed metal powder, powder diameter is 9-12 μm, the pedestal outer surface is provided with one layer of epoxy resin, coil leading foot one end is fixedly welded with prefabricated coil, the coil pin other end is that the leading foot of prefabricated coil is set to seat surface, the present invention has compared with the higher inductance of traditional inductance and smaller leakage inductance；Inductance designs for loop construction, and when use will not only damage inductance, but also can improve production efficiency, and can play certain heat spreading function due to being added with alloyed metal powder in use in inductance fever expansion, slow down expansion.
Description
Technical field
The present invention relates to inductive technologies, a kind of particularly integrally-formed inductor.
Background technique
Inductor is the element that electric energy can be converted into magnetic energy and stored.The structure of inductor is similar to transformation
Device, but only one winding.Inductor has certain inductance, it only prevents the variation of electric current.If without electricity in inductor
Stream passes through, then it prevents electric current from flowing through it；If there is electric current flows through it, then it will attempt to maintain electric current constant when circuit disconnects.
Inductor is also known as choke, reactor, dynamic reactor.Inductor is widely used in electronic circuit, to realize oscillation, adjusting
One of humorous, coupling, filtering, delay, the main element of deflection.Midget inductor is in mobile phone, top box of digital machine, bluetooth headset, liquid
The fields such as brilliant TV, automotive electronics, Industry Control, are widely used.
Due to the progress in Electronic Packaging, it is trend that manufacturing, which has the inductor of microstructure,.Therefore, cored structure must
Must have small and small shape again, thus it they be adapted to modern electronic devices, some of which can be small
Or with very thin shape, the inductor for manufacturing small shape has made manufacturer encounter many difficulties, and inside inductance
Fever is difficult to radiate, and being easy, which influences inductance, uses.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of integrally-formed inductor, adds alloying metal powder by inside
It radiates at end.
In order to achieve the above object, the invention adopts the following technical scheme:
The invention discloses a kind of integrally-formed inductor, including pedestal, coil pin and prefabricated coil, the pedestal includes
Upper pedestal and lower base, the upper pedestal carry out die casting with lower base and combine, and the pedestal is made of metallic magnetic powder die casting,
The pedestal internal structure is added with alloyed metal powder, and powder diameter is 9-12 μm, and the pedestal outer surface is provided with one
Layer epoxy resin, the pedestal internal structure are added with alloyed metal powder, and powder diameter is 9-12 μm, the coil leading foot
One end is fixedly welded with prefabricated coil, and the coil pin other end is that the leading foot of prefabricated coil is set to seat surface.
Further, the metallic magnetic powder is nickeliferous 65% dilval being heat-treated by transverse magnetic field, laterally
Stablize magnetic conductivity.
Further, be provided with the magnetic ferrite magnetic core of cylindrical structure in the pedestal, soft magnetic ferrite at
This is low, and medium-high frequency loss is small, for keeping magnetic conductivity variation characteristic to stablize, increasing inductance and improving the quality of coil.
Further, the magnetic ferrite magnetic core side is provided with one layer and uses epoxy-modified organic silicon coat, uses
In comprehensive performances such as electrical strength, hardness and the insulation for adjusting film.
Further, the prefabricated coil uses the copper core coil of simple squamous formula, for reducing inductance volume or identical
Volume increases coil turn.
Further, it is 5%-10% that the alloyed metal powder matches percentage in pedestal, is used for inductance heating and heat conducting
Heat dissipation, slows down expansion.
Further, the magnetic ferrite magnetic core grain diameter is 100-200 μm, for guaranteeing high magnetic permeability, is improved
Inductance.
Further, the prefabricated coil forms a layer insulating by dipping, is bonded as winding wire for solidifying
Insulation is whole, and is formed on its surface continuous insulating layer.
Further, the metallic magnetic powder is added with surfactant, for uniform when guaranteeing film brushing
It is firm.
Further, the coil pin is pressed into flat sheet-like structure using silver-colored material, for increasing pin contact surface
Product.
Beneficial effect
The invention discloses a kind of integrally-formed inductors to play heat spreading function, subtract by adding alloying metal ingredient in pedestal
Few inductor loss, surfactant is added in metal powder, insulating layer is formed uniformly, prevents insulating layer from rupturing, cause electricity
Sense short circuit.
Detailed description of the invention
Fig. 1 overall structure of the present invention；
Fig. 2 lower base structural schematic diagram of the present invention；
Fig. 3 upper pedestal structural schematic diagram of the present invention；
Fig. 4 loop construction schematic diagram of the present invention；
Fig. 5 structure of the invention decomposition diagram；
Fig. 6 microstructure schematic diagram of the present invention；
Description of symbols: pedestal 1, lower base 2, magnetic core 201, gap 202, side wall 203, substrate 204, end wall 205, upper pedestal
3, recess 301, epoxy resin 4, organic silicon coat 5, prefabricated coil 6, coil pin 601, alloyed metal powder 701, ferronickel close
Gold 702.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention, in embodiment
In, device is inductor, although it is considered that being attributable to the device of other types the advantages of invention described below.It is retouched when following
The material and technology stated are considered the manufacture to flat inductor when being especially advantageous, it is recognized that inductor be a kind of electronics group
Part is also to be expected in wherein advantages of the present invention.Therefore, the purpose that the elaboration of specification is merely to illustrate that, and
It is contemplated that advantages of the present invention is attributed to the inductor and other electronic building bricks of other sizes and type.Therefore, it sends out herein
The practice of bright design is not limited to the illustration in example embodiment described herein and attached drawing uniquely.Furthermore attached drawing is not
It is limitation, the thickness of various assemblies and other sizes have been amplified for purposes of clarity.
Embodiment 1
It is as shown in Figs. 1-3: the invention discloses a kind of integrally-formed inductor, including pedestal 1, coil pin 601 and prewire
Circle 6.
Pedestal 1 forms for two parts die casting, including upper pedestal 2 and lower base 3.
Lower base 2 is generally rectangular or rectangle, is not limited to rectangle, is also designed to circle, other shapes such as polygon
Shape, and there is substrate 204, two side walls 203, two end walls 205, mounting groove and magnetic core 201, two side walls 203 extend to base
The two sides at bottom 204, length is suitable with 204 length of substrate, and is formed with the inner surface and the outer surface, the inner surface of two of them side wall
Close to magnetic core 201, outer surface and the substrate of two side walls 203 keep smooth, and 203 inner surface of side wall forms recess, two end walls
205 extend the part of 204 width of substrate from 203 end of two side walls of substrate, and gap 202 is formed in two end walls 205,
And it is located at the center of end wall 205, symmetrically, mounting groove is combined two side walls 203 by two side walls 203 and two end walls 205
It is formed, magnetic core 201 is located at the center of mounting groove and extends upward to cylindrical shape from substrate 204, and magnetic core 201 is highly extensible
Extremely with two side walls 203, two end walls 205 are contour, or the height of slightly below side wall 203 and end wall 205, and prefabricated coil 6 carries out
When installation, magnetic core 201 is located at the inner ring of prefabricated coil 6, to keep prefabricated coil 6 relative to the position of base center.
Upper pedestal 3 is generally rectangular or rectangular shape, matches with 2 shape of lower base, can be designed to different shapes,
Area is suitable with 2 occupied area of lower base, and there are two opposite terminals for the tool of upper pedestal 3, wherein each terminal is provided with and pin
301 structure of recess that shape matches, width are slightly larger than 601 width of coil pin.
Pedestal 1 is made of metallic magnetic powder die casting, and pedestal internal structure is added with alloyed metal powder 701, not only
For a kind of powder of diamond, other Heat Conduction Materials can be added, such as: Heat Conduction Material, pedestal are concentrated in silicon, aluminium etc., or addition
Outer surface is provided with one layer of epoxy resin 4, and 601 one end of coil pin is fixedly welded with prefabricated coil 6, the coil pin other end
Seat surface is set to for the leading foot of prefabricated coil.
Metallic magnetic powder is nickeliferous 65% dilval 702 being heat-treated by transverse magnetic field, improves magnetic conductivity and stablizes
Property.
201 side of magnetic ferrite magnetic core is provided with one layer and uses epoxy-modified organic silicon coat 5, height and magnetic core
201 height are consistent, the comprehensive performances such as electrical strength, hardness and insulation for adjusting film.
For prefabricated coil 6 using the copper core coil of simple squamous formula, prefabricated coil is the coil and two lines of a circle or multiturn
Enclose pin 601, extended outwardly with 180 degree from prefabricated coil, length extends to pedestal edge, bend then up, then again to
Inner bending forms U-shaped structure towards prefabricated coil, and prefabricated coil presets inner ring diameter size and matches with center magnetic core, makes magnetic
Core can smoothly be inserted in prefabricated coil.
The heat generated inside integrated inductance, which dissipates, does not go out, and can generate larger shadow to the performance of integrated inductance
It rings, and when magnetic core 201 is heated can generate swelling stress, therefore, Heat Conduction Material is added in pedestal, be added to leading in pedestal
Hot material can be a variety of Heat Conduction Materials, therefore, can add alloyed metal powder in the magnetic metal material for forming pedestal
701, powder diameter is 9-12 μm, so that pedestal 1 has preferable heating conduction, alleviates the expansion generated when magnetic core 201 is heated
Stress, since the diamond prices of raw materials are higher, higher cost can replace other materials according to cost, improve heat conduction material
The shared proportion of material.
The grain diameter of magnetic ferrite magnetic core 201 is 100-200 μm, for guaranteeing high magnetic permeability, improves inductance.
Prefabricated coil 6 is made of copper, and is electroplate with other conductive materials, the coil made by maceration extract impregnate after
Coil surface forms a layer insulating, winding wire is bonded as insulation entirety for solidifying, and be formed on its surface continuous
Insulating layer.
When dilval 702 carries out die casting, it is added with surfactant, it is uniform steady when for later period film brushing
Gu.
Coil pin 601 is pressed into flat sheet-like structure using silver-colored material, and two 601 length of coil pin are different, but end
Hold shape identical, long coil pin 601 is connect with 6 lower part of prefabricated coil, short coil pin 601 and 6 top of prefabricated coil
Connection is fixedly connected with prefabricated coil 6 using spot welding mode, and silver, relative to copper, electric conductivity is more preferable, and pin is using silver-colored material
It more can ensure that the electric conductivity of coil.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
The above embodiment is merely an example for clearly illustrating the present invention, and does not limit the embodiments.
For those of ordinary skill in the art, other various forms of variations can also be made on the basis of the above description
Or it changes.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation thus amplified out
Or it changes and is still in the protection scope of this invention.
Claims (10)
1. a kind of integrally-formed inductor, including pedestal, coil pin and prefabricated coil, it is characterised in that: the pedestal includes
Upper pedestal and lower base, the upper pedestal carry out die casting with lower base and combine, and the pedestal is made of metallic magnetic powder die casting,
The pedestal internal structure is added with alloyed metal powder, and powder diameter is 9-12 μm, and the pedestal outer surface is provided with one
Layer epoxy resin, the pedestal internal structure are added with alloyed metal powder, and powder diameter is 9-12 μm, the coil leading foot
One end is fixedly welded with prefabricated coil, and the coil pin other end is that the leading foot of prefabricated coil is set to seat surface.
2. a kind of integrally-formed inductor according to claim 1, which is characterized in that the metallic magnetic powder is to pass through
Nickeliferous 65% dilval of transverse magnetic field heat treatment.
3. a kind of integrally-formed inductor according to claim 1, which is characterized in that be provided with cylindrical body in the pedestal
The magnetic ferrite magnetic core of structure.
4. a kind of integrally-formed inductor according to claim 3, which is characterized in that the magnetic ferrite magnetic core side
It is provided with one layer and uses epoxy-modified organic silicon coat.
5. a kind of integrally-formed inductor according to claim 1, which is characterized in that the prefabricated coil is flat using single layer
The copper core coil of flat.
6. a kind of integrally-formed inductor according to claim 1, which is characterized in that the alloyed metal powder is in pedestal
Middle proportion percentage is 5%-10%.
7. a kind of integrally-formed inductor according to claim 3, which is characterized in that the magnetic ferrite magnetic core particle
Partial size is 100-200 μm.
8. a kind of integrally-formed inductor according to claim 1, which is characterized in that the prefabricated coil passes through dipping shape
At a layer insulating.
9. a kind of integrally-formed inductor according to claim 1, which is characterized in that the metallic magnetic powder addition
There is surfactant.
10. a kind of integrally-formed inductor according to claim 1, which is characterized in that the coil pin is using silver
Material is pressed into flat sheet-like structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811462943.0A CN109509613A (en) | 2018-12-03 | 2018-12-03 | A kind of integrally-formed inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811462943.0A CN109509613A (en) | 2018-12-03 | 2018-12-03 | A kind of integrally-formed inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109509613A true CN109509613A (en) | 2019-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811462943.0A Pending CN109509613A (en) | 2018-12-03 | 2018-12-03 | A kind of integrally-formed inductor |
Country Status (1)
| Country | Link |
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| CN (1) | CN109509613A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114068152A (en) * | 2021-12-14 | 2022-02-18 | 苏州邦鼎新材料有限公司 | High-performance high-quality integrated inductance element structure and manufacturing method thereof |
| CN115394508A (en) * | 2022-09-05 | 2022-11-25 | 东莞市烨赫数码科技有限公司 | Chip thermistor and mounting method thereof |
| WO2023185150A1 (en) * | 2022-03-30 | 2023-10-05 | 昆山玛冀电子有限公司 | Integrally formed inductor and manufacturing method therefor |
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2018
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| US20100060398A1 (en) * | 2008-09-08 | 2010-03-11 | Trio Technology Co., Ltd. | Method to Fabricate a Molding Inductor Structure and a Molding Inductor Structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114068152A (en) * | 2021-12-14 | 2022-02-18 | 苏州邦鼎新材料有限公司 | High-performance high-quality integrated inductance element structure and manufacturing method thereof |
| WO2023185150A1 (en) * | 2022-03-30 | 2023-10-05 | 昆山玛冀电子有限公司 | Integrally formed inductor and manufacturing method therefor |
| CN115394508A (en) * | 2022-09-05 | 2022-11-25 | 东莞市烨赫数码科技有限公司 | Chip thermistor and mounting method thereof |
| CN115394508B (en) * | 2022-09-05 | 2023-06-27 | 杭州芯正微电子有限公司 | Chip thermistor and mounting method thereof |
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Application publication date: 20190322 |