CN204441025U - A kind of inductance - Google Patents
A kind of inductance Download PDFInfo
- Publication number
- CN204441025U CN204441025U CN201520173719.5U CN201520173719U CN204441025U CN 204441025 U CN204441025 U CN 204441025U CN 201520173719 U CN201520173719 U CN 201520173719U CN 204441025 U CN204441025 U CN 204441025U
- Authority
- CN
- China
- Prior art keywords
- inductance
- magnetic core
- core array
- laminated body
- trunk portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 16
- 229920006335 epoxy glue Polymers 0.000 claims abstract description 4
- 210000005056 cell body Anatomy 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 238000007639 printing Methods 0.000 claims description 4
- 230000037237 body shape Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000003475 lamination Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000003854 Surface Print Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 24
- 230000001939 inductive effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 210000000003 hoof Anatomy 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
The utility model relates to a kind of inductance, comprising: the laminated body of band center through hole and magnetic core array, and laminated body comprises: multi-layer ferrite film, and each ferrite membrane is provided with conductive coil, each layer conductive coil series connection; Magnetic core array comprises trunk portion, and this trunk portion is engaged in the center through hole of described laminated body.During assembling, select the magnetic core array of the cylinder of different size, to change inductance value, finally adopt epoxy glue to be fixed in the center through hole of described laminated body the cylinder of described magnetic core array.Inductance of the present utility model, compared with conventional patch inductance, instead of common enamelled wire technique for coiling, directly at raw material band surface printing circuit, after carry out lamination compacting make product, be applicable to mass production.Inductance value of the present utility model is adjustable.Product is made standard component, by the magnetic core array of the cylinder of different length, different size, to change inductance value, many moneys chip inductor of similar size can be substituted, be applicable to standardized production.
Description
Technical field
The utility model relates to a kind of inductance, especially laminated inductive.
Background technology
Inductance divides from manufacturing process can mainly be divided into four classes, winding-type, lamination-type, Weaving type and thin film chip inductor device, conventional mainly winding-type and lamination-type inductor.The former is the product of traditional winding inductor miniaturization, and the latter adopts multi-sheet printed technology and lamination production technology to make.
The feature of winding-type inductance is inductance value scope wide (uH-mH), and inductance precision is high, loss little (namely Q value is large), and allowable current is large, and manufacture craft inheritance is strong, simple, cost is low; Weak point be further miniaturized in be restricted.The wound chip inductor device of ceramic core can keep stable inductance value and quite high Q value in frequency high like this, thus occupies a tiny space in radio circuit.
Lamination-type inductance has good electromagnetic shielding performance, sintered density is high, mechanical strength is good, have compared with winding-type inductance: size is little, the miniaturization that is conducive to circuit, magnetic circuit closes, can not disturb the components and parts of surrounding, also can not be subject to the interference of components and parts around, be conducive to the high-density installation of components and parts; Laminated integratedization structure, reliability are high, good heat resistance, solderability are good, regular shape, are applicable to automation and install production.Weak point is that qualification rate is lower, and inductance value is little, and Q value is little.
Generally speaking laminated inductance can't see line, and the thermal diffusivity of laminated inductance is good, but the wire-wound inductor of resistance to current ratio is little.
The manufacture craft of laminated inductive--low temperature co-fired ferrite technology: the structure of laminated inductive is made up of the ferrite layer superposed alternately and inner conductor layer, its manufacture craft adopts low temperature co-fired ferrite (LTCF) technology.The technical process making laminated inductive is: ferrite powder is made slurry, make ferrite membrane by curtain coating or wet printing method and print conductive coil with silver slurry thereon, overlap together, perforation is communicated with each layer conductive coil, repeats the laminated construction that above-mentioned steps just can be made into multilayer.Then, then by subsequent handlings such as cutting, binder removal, sintering, chamfering, termination electrode processed, detections can complete.
Existing laminated inductive conductive coil c-shaped or shape of a hoof on individual layer ferrite layer, less in the certain thickness lamination coil number of turns, cause inductance value less and unadjustable.
Utility model content
Technical problem to be solved in the utility model is to provide that a kind of structure is simple, inductance value is larger and adjustable inductance.
In order to solve the problem, the utility model provides a kind of inductance, comprising: the laminated body of band center through hole and magnetic core array, laminated body comprises: multi-layer ferrite film, each ferrite membrane is provided with the conductive coil printed with silver slurry, and each layer conductive coil series connection, forms built-up coil; Magnetic core array comprises trunk portion, and this trunk portion is engaged in the center through hole of described laminated body.
Particularly, described magnetic core array is T-shaped, E shape, L shape or F shape etc., core material is the various soft magnetic material such as MnZn, nickel zinc.Described conductive coil by circular arc Spiral distribution, or press polygon (square, triangle or pentagon etc.) Spiral distribution, and each layer connects combination according to different designs and sinters laminated body into, formation built-up coil.
During assembling, select the magnetic core array of difformity, different length cylinder, to change inductance value, finally adopt epoxy glue to be fixed in the center through hole of described laminated body the cylinder of described magnetic core array.
Described magnetic core array is soft magnetic ferrite, when laminated body shape, specification, size are fixed, carrys out adjusting inductance by the length of the trunk portion regulating magnetic core array.
Conductive coil silver slurry in described ferrite membrane or other materials are printed in ferrite membrane.
Preferred scheme is further: the end of the trunk portion of described magnetic core array is connected in a cell body, when the trunk portion of described magnetic core array is located in the center through hole of described laminated body, laminated body can embed in the vallecular cavity of described cell body, and then conveniently adopt glue to fix described cell body and laminated body, and globality is better, coil can be shielded, and improves reliability when product uses.
The utility model has positive effect relative to prior art: (1) laminated inductive of the present utility model itself, due to the limitation of size, adds magnetic core array to increase inductance value so adopt; One deck ferrite membrane of the present utility model is provided with the multi-turn of silver slurry printing conductive coil in spiral distribution, and relative to individual layer ferrite membrane only being arranged a c-shaped or shape of a hoof conductive coil, inductance value can increase many times, even tens times; (2) inductance of the present utility model is compared with conventional patch inductance, instead of common enamelled wire technique for coiling, directly at raw material band surface printing circuit, after carry out lamination compacting make product, be applicable to mass production.(3) inductance value of the present utility model is adjustable.Laminated body is made standard component, by the magnetic core array of the cylinder of different length, shape, to change inductance value, many moneys chip inductor of similar size can be substituted, be applicable to standardized production.
Accompanying drawing explanation
Below in conjunction with specific embodiment, the utility model is described in further detail:
Fig. 1 is the decomposition texture schematic diagram of inductance of the present utility model;
Fig. 2 is the perspective view of the magnetic core array in described inductance;
Fig. 3 is the bottom surface structure schematic diagram of the laminated sheet in described inductance, wherein marks 21,22 and is respectively positive and negative electrode;
Fig. 4 is the rearview of the laminated sheet of Fig. 3;
Fig. 5 is the another kind of perspective view of described magnetic core array.
Embodiment
Embodiment 1
See Fig. 1 to 4, the inductance of the present embodiment, comprise: the laminated body 2 of band center through hole and the preferred T-shaped of magnetic core array 1(the present embodiment, in other embodiments, described magnetic core array can be the structure that E shape, L shape or F shape etc. have trunk portion), laminated body 2 comprises: multi-layer ferrite film, and each ferrite membrane is provided with the conductive coil 23 of the multi-circle spiral flow distribution (be specially by circular arc Spiral distribution, or press polygonal spiral distribution) printed with silver slurry; Magnetic core array 1 comprises cylinder 11, and this cylinder 11 is engaged in the center through hole 24 of described laminated body 2.
Conductive coil in each ferrite membrane, is communicated with the conductive coil on adjacent layer by the mode of the perforation on ferrite membrane thickness direction.The positive and negative electrode that the bottom surface of the ferrite membrane of bottom is printed with.Each ferrite membrane sinters laminated body into after printing conductive coil.
During assembling, select the magnetic core array 1 of the cylinder 11 of different size (especially length), to change inductance value, finally adopt epoxy glue to be fixed in the center through hole 24 of described laminated body 2 cylinder 11 of described magnetic core array 1.Described magnetic core array 1 is soft magnetic ferrite.
Comparative example:
Existing inductance 6045 (length of side 6.0mm, thickness 4.5mm) series: 6045-101M(inductance value 100uH), 6045-150M(inductance value 150uH) two conventional patch inductance all can substitute by a laminated inductive of the present utility model.Making the length of side is as requested 6.0mm, and thickness is the laminated inductive of 4.5mm, and every one deck prints silver-colored line 3 and encloses, lamination 16 layers.By selecting the magnetic core array of the cylinder of different length, adjusting inductance is from 100uH-150uH.
Embodiment 2
On the basis of embodiment 1, there is following modification in the present embodiment: the end of the trunk portion 11 of described magnetic core array 1 is connected in a cell body, when the trunk portion 11 of described magnetic core array is located in the center through hole of described laminated body, laminated body can embed in the vallecular cavity 12 of described cell body, and then conveniently adopt glue to fix described cell body and laminated body, and globality is better, coil can be shielded, and improves reliability when product uses.
Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.
Claims (7)
1. an inductance, is characterized in that comprising: the laminated body of band center through hole and magnetic core array, and laminated body comprises: multi-layer ferrite film, and each ferrite membrane is provided with conductive coil, each layer conductive coil series connection;
Magnetic core array comprises trunk portion, and this trunk portion is engaged in the center through hole of described laminated body.
2. inductance according to claim 1, is characterized in that: described magnetic core array is T-shaped, E shape, L shape or F shape.
3. inductance according to claim 1, is characterized in that: described conductive coil by circular arc Spiral distribution, or presses polygonal spiral distribution, and each ferrite membrane sinters laminated body into after printing conductive coil.
4. according to the inductance one of claim 1-3 Suo Shu, it is characterized in that: the trunk portion of described magnetic core array adopts epoxy glue to be fixed in the center through hole of described laminated body.
5. according to the inductance one of claim 1-3 Suo Shu, it is characterized in that: when laminated body shape, specification, size are fixed, carry out adjusting inductance by the length of the trunk portion regulating magnetic core array.
6. according to the inductance one of claim 1-3 Suo Shu, it is characterized in that: the conductive coil silver slurry in described ferrite membrane is printed in ferrite membrane.
7. according to the inductance one of claim 1-3 Suo Shu, it is characterized in that: the end of the trunk portion of described magnetic core array is connected in a cell body, when the trunk portion of described magnetic core array is located in the center through hole of described laminated body, laminated body can embed in the vallecular cavity of described cell body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520173719.5U CN204441025U (en) | 2015-03-25 | 2015-03-25 | A kind of inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520173719.5U CN204441025U (en) | 2015-03-25 | 2015-03-25 | A kind of inductance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204441025U true CN204441025U (en) | 2015-07-01 |
Family
ID=53608860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520173719.5U Expired - Fee Related CN204441025U (en) | 2015-03-25 | 2015-03-25 | A kind of inductance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204441025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111724976A (en) * | 2019-03-22 | 2020-09-29 | 乾坤科技股份有限公司 | Electronic device and inductor |
-
2015
- 2015-03-25 CN CN201520173719.5U patent/CN204441025U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111724976A (en) * | 2019-03-22 | 2020-09-29 | 乾坤科技股份有限公司 | Electronic device and inductor |
| CN111724976B (en) * | 2019-03-22 | 2022-02-18 | 乾坤科技股份有限公司 | Electronic device and inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |