CN107799271A - Common-mode inductor and its manufacture method - Google Patents
Common-mode inductor and its manufacture method Download PDFInfo
- Publication number
- CN107799271A CN107799271A CN201711180233.4A CN201711180233A CN107799271A CN 107799271 A CN107799271 A CN 107799271A CN 201711180233 A CN201711180233 A CN 201711180233A CN 107799271 A CN107799271 A CN 107799271A
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- China
- Prior art keywords
- common
- mode inductor
- pole piece
- end pole
- magnetic conductor
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 57
- 239000004020 conductor Substances 0.000 claims abstract description 32
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 45
- 229910045601 alloy Inorganic materials 0.000 claims description 21
- 239000000956 alloy Substances 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 4
- 229910000889 permalloy Inorganic materials 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 5
- 238000005253 cladding Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000013039 cover film Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009766 low-temperature sintering Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- -1 and certainly Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000005300 metallic glass Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2871—Pancake coils
-
- 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
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F2017/0093—Common mode choke coil
-
- 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 invention belongs to inductor manufacturing technology field, there is provided common-mode inductor and its manufacture method, the common-mode inductor include magnetic conductor, end pole piece and two winding coils；Two winding coils use flat wire coiling, reduce D.C. resistance so that common-mode inductor is not easy to generate heat when passing through electric current, improves the rated current of common-mode inductor, reaches the requirement of the low D.C. resistance of inductor and high rated current；The exit of two winding coil and end pole piece welding, magnetic conductor cladding winding coil, and magnetic conductor is integrally formed with winding coil so that and common-mode inductor intensity is high, strong shock resistance；End pole piece extends to the outside of magnetic conductor and forms the electrode of common-mode inductor, when magnetic conductor ensures certain magnetic conductivity, temperature coefficient is up to 180 DEG C, common-mode inductor is worked at higher or lower temperature, therefore the problem of solving existing common-mode inductor there is anti-vibration, impact resistance are weak, and can not working at high operating temperatures.
Description
Technical field
The invention belongs to inductor manufacturing technology field, more particularly to common-mode inductor and its manufacture method.
Background technology
At present, existing common-mode inductor includes magnetic core and coil, and magnetic core is to dock the square shape formed by two U-shaped piece
Structure, the side of magnetic core are provided with chamfering, and the outer surface of magnetic core has insulating barrier, and coil is respectively wound around two U-shaped piece of middle part.
However, this kind of common-mode inductor anti-vibration, impact resistance are weak, and can not work at high operating temperatures.
Therefore, existing common-mode inductor is there is anti-vibration, impact resistance are weak, and can not be operated in the condition of high temperature
The problem of lower.
The content of the invention
It is an object of the invention to provide common-mode inductor and its manufacture method, it is intended to solves existing common-mode inductor and deposits
It is weak in anti-vibration, impact resistance, and the problem of can not work at high operating temperatures.
First aspect present invention provides common-mode inductor, and the common-mode inductor includes magnetic conductor, end pole piece and two
Individual winding coil；
Two winding coils are flat wire coil, and the exit of two winding coils welds with the end pole piece
Connect；The magnetic conductor coats the winding coil, and the magnetic conductor is integrally formed with the winding coil；The end pole piece
Extend to the outside of the magnetic conductor and form the electrode of the common-mode inductor.
Second aspect of the present invention provides the manufacture method of common-mode inductor, and the manufacture method comprises the following steps：
Flat enamel-cover line winding is made using flat wire winding method, to form winding coil；
The head and the tail exit of the winding coil is connected with end pole piece using spot-welding technology；
Using alloy powder by the winding coil all coat, by forming machine to injection mold cavity in described in around
Group coil and alloy powder pressure, form device main body；
The end pole piece is converted into, it is fitted in the edge of the device main body and extends and form electrode.
In summary, above-mentioned common-mode inductor and its manufacture method, the common-mode inductor include magnetic conductor, end pole piece and
Two winding coils；Two winding coils use flat wire coiling, reduce D.C. resistance so that common-mode inductor is passing through electricity
It is not easy to generate heat during stream, improves the rated current of common-mode inductor, so as to reaches the low D.C. resistance of inductor and high rated current
Requirement；The exit of two winding coil and end pole piece welding, magnetic conductor cladding winding coil, and magnetic conductor and winding
Coil is integrally formed so that common-mode inductor intensity is high, strong shock resistance；End pole piece extends to outside and the formation of magnetic conductor
The electrode of common-mode inductor, when magnetic conductor ensures certain magnetic conductivity, temperature coefficient is up to 180 DEG C so that common-mode inductor
It can be worked at higher or lower temperature, therefore solve existing common-mode inductor there is anti-vibration, impact resistance
It is weak, and the problem of can not work at high operating temperatures.
Brief description of the drawings
Fig. 1 is the structural representation for the common-mode inductor that first embodiment of the invention provides.
Fig. 2 is the top view for the common-mode inductor that first embodiment of the invention provides.
Fig. 3 is the step flow chart of the manufacture method for the common-mode inductor that second embodiment of the invention provides.
Embodiment
In order that technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
The common-mode inductor and its manufacture method of the embodiment of the present invention, the common-mode inductor include magnetic conductor, end pole piece with
And two winding coils；Two winding coils use flat wire coiling, realize low resistance, the effect of high current；Two around
The exit of group coil and end pole piece welding, magnetic conductor cladding winding coil, and magnetic conductor is integrally formed with winding coil, is made
Obtain common-mode inductor anti-vibration, strong shock resistance；End pole piece extends to the outside of magnetic conductor and forms the electricity of common-mode inductor
Pole, when magnetic conductor ensures certain magnetic conductivity, the operating temperature of common-mode inductor can be made to reach -55 °~150 ° of requirement.By
, by above-mentioned structure and manufacture method, reliability, environmental suitability and its electric energy for improving common-mode inductor product are special for this
Property.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Fig. 1 and Fig. 2 respectively illustrates the structure and top view of the common-mode inductor of first embodiment of the invention offer, in order to
It is easy to illustrate, illustrate only the part related to the embodiment of the present invention, details are as follows：
Above-mentioned common-mode inductor includes magnetic conductor 102, end pole piece 103 and two winding coils 101；
Two winding coils 101 are flat wire coil, and exit and the end pole piece 103 of two winding coils 101 weld；Lead
Magnet 102 coats winding coil 101, and magnetic conductor 102 is integrally formed with winding coil 101；End pole piece 103 extends to magnetic conduction
The outside of body 102 and the electrode for forming common-mode inductor.
As one embodiment of the invention, above-mentioned magnetic conductor 102 is using magnetic flux density is big, low-loss, anti-saturation ability be strong
Alloy powder pressing is formed, and alloy powder includes iron silicochromium powder and carbonyl powder.Certainly, alloy powder also includes permalloy
Any one or more in powder, non-crystaline amorphous metal powder, nanometer crystal alloy powder.
It is above-mentioned to use iron silicochromium powder and carbonyl powder mixed preparing, solve product surface cracking, single powder after shaping
Expect that magnetic conductivity is low and the problem such as resistance to direct current biasing ability；And the iron silicochromium and carbonyl preparation of powder of different proportion are used,
Realize that low-temperature sintering solidifies, effectively prevent the generation of enamel-cover film damaged phenomenon in high-temperature sintering process of enamel-covered wire.
As one embodiment of the invention, each winding coil 101 includes two exits, and common-mode inductor includes four ends pole
Piece 103；
One end of each end pole piece 103 is spot welded with corresponding exit respectively to be connected, and each other end for holding pole piece 103 is formed
Electrode.
As one embodiment of the invention, above-mentioned end pole piece 103 is "U" shaped, the opening of the end pole piece 103 of "U" shaped with
Winding coil 101 is relative, and end pole piece 103 fits in the edge of magnetic conductor 102.The common-mode inductor may be designed to SMD or DIP
Encapsulating structure.
Fig. 3 shows a kind of manufacture method that can make above-mentioned common-mode inductor that second embodiment of the invention provides
Steps flow chart, for convenience of description, the part related to the embodiment of the present invention is illustrate only, details are as follows：
The manufacture method of above-mentioned common-mode inductor, comprises the following steps：
S101. flat enamel-cover line winding is made using flat wire winding method, to form winding coil；
Due to using flat wire coiling, D.C. resistance can be reduced so that common-mode inductor is not easy to generate heat at work, lifting
The rated current of common-mode inductor, so as to reaching the requirement of the low D.C. resistance of common-mode inductor and high rated current.Flat wire
Using high temperature flat wire, high temperature resistant reaches 220 DEG C.
S102. the head and the tail exit of winding coil is connected with end pole piece using spot-welding technology；
The head and the tail exit of winding coil is connected with end pole piece by being spot welded, and its connected mode more fastens.Hold pole piece
Using copper material, electroplating processes are done on surface.
S103. winding coil is all coated using alloy powder, by forming machine to the winding in injection mold cavity
Coil and alloy powder pressure, form device main body；
Alloy powder includes iron silicochromium powder and carbonyl powder, and certainly, alloy powder may also include permalloy powder, amorphous
Any one or more in alloyed powder, nanometer crystal alloy powder.
It is above-mentioned to use iron silicochromium powder and carbonyl powder mixed preparing, solve product surface cracking, single powder after shaping
Expect that magnetic conductivity is low and the problem such as resistance to direct current biasing ability；And the iron silicochromium and carbonyl preparation of powder of different proportion are used,
Realize that low-temperature sintering solidifies, effectively prevent the generation of enamel-cover film damaged phenomenon in high-temperature sintering process of enamel-covered wire.Alloyed powder
Material is integrated with winding coil so that product strength is high, strong shock resistance.
S104. end pole piece is converted into, it is fitted in the edge of device main body and extend and form electrode.
In the case where ensureing that device main body has certain magnetic conductivity, temperature coefficient, can be higher and relatively low up to 180 DEG C
Operating temperature under work, its loss is low, meets the temperature requirement of common-mode inductor.
Therefore, the advantage of above-mentioned common-mode inductor is embodied in：
(1) present invention requires according to the low D.C. resistance and high rated current of inductor, from the side such as structure, material and technique
Face is designed, optimizes and adjusted, and realizes the application requirement of the low D.C. resistance and high rated current of common-mode inductor；
(2) present invention realizes common-mode inductor anti-vibration, impact resistance requirement, at the same enhance common-mode inductor can
By property, reach military requirements；
(3) present invention realizes the requirement of common-mode inductor operating temperature wide scope, at the same enhance common-mode inductor can
By property, reach military requirements；
(4) manufacturing equipment that the present invention uses is constant, easy to operate, it is easy to accomplish batch production.
In summary, the embodiments of the invention provide common-mode inductor and its manufacture method, the common-mode inductor includes leading
Magnet, end pole piece and two winding coils；Two winding coils use flat wire coiling, reduce D.C. resistance so that altogether
Mould inductor is not easy to generate heat when passing through electric current, improves the rated current of common-mode inductor, so as to reach the low direct current of inductor
The requirement of resistance and high rated current；The exit of two winding coil and end pole piece welding, magnetic conductor cladding winding coil,
And magnetic conductor is integrally formed with winding coil so that common-mode inductor intensity is high, strong shock resistance；End pole piece, which extends to, leads
The outside of magnet and the electrode for forming common-mode inductor, when magnetic conductor ensures certain magnetic conductivity, temperature coefficient is up to 180
DEG C so that common-mode inductor can work at higher or lower temperature, therefore solve existing common-mode inductor there is
Anti-vibration, impact resistance are weak, and the problem of can not work at high operating temperatures.The embodiment of the present invention is realized simply, is not required to
Increase extra hardware, can effectively reduce cost, there is stronger usability and practicality.It the foregoing is only the present invention's
Preferred embodiment, it is not intended to limit the invention, any modification for being made within the spirit and principles of the invention, etc.
With replacement and improvement etc., should be included in the scope of the protection.
Claims (8)
1. a kind of common-mode inductor, it is characterised in that the common-mode inductor includes magnetic conductor, end pole piece and two winding wires
Circle；
Two winding coils are flat wire coil, and the exit of two winding coils welds with the end pole piece；Institute
State magnetic conductor and coat the winding coil, and the magnetic conductor is integrally formed with the winding coil；The end pole piece extension
To the outside of the magnetic conductor and form the electrode of the common-mode inductor.
2. common-mode inductor as claimed in claim 1, it is characterised in that the magnetic conductor is formed using alloy powder pressing,
The alloy powder includes iron silicochromium powder and carbonyl powder.
3. common-mode inductor as claimed in claim 2, it is characterised in that the alloy powder also includes permalloy powder, non-
Any one or more in peritectic alloy powder, nanometer crystal alloy powder.
4. common-mode inductor as claimed in claim 1, it is characterised in that each winding coil includes two extractions
End, the common-mode inductor include four end pole pieces；
One end of each end pole piece connects with the corresponding exit spot welding respectively, the other end shape of each end pole piece
Into the electrode.
5. common-mode inductor as claimed in claim 1, it is characterised in that the end pole piece is "U" shaped, the institute of "U" shaped
It is relative with the winding coil to state the opening of end pole piece, and the end pole piece fits in the edge of the magnetic conductor.
6. a kind of manufacture method of common-mode inductor, it is characterised in that the manufacture method comprises the following steps：
Flat enamel-cover line winding is made using flat wire winding method, to form winding coil；
The head and the tail exit of the winding coil is connected with end pole piece using spot-welding technology；
The winding coil is all coated using alloy powder, by forming machine to the winding wire in injection mold cavity
Circle and alloy powder pressure, form device main body；
The end pole piece is converted into, it is fitted in the edge of the device main body and extends and form electrode.
7. manufacture method as claimed in claim 6, it is characterised in that the alloy powder includes iron silicochromium powder and carbonyl
Powder.
8. manufacture method as claimed in claim 7, it is characterised in that the alloy powder also includes permalloy powder, amorphous
Any one or more in alloyed powder, nanometer crystal alloy powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711180233.4A CN107799271A (en) | 2017-11-23 | 2017-11-23 | Common-mode inductor and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711180233.4A CN107799271A (en) | 2017-11-23 | 2017-11-23 | Common-mode inductor and its manufacture method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107799271A true CN107799271A (en) | 2018-03-13 |
Family
ID=61536563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711180233.4A Pending CN107799271A (en) | 2017-11-23 | 2017-11-23 | Common-mode inductor and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107799271A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585123A (en) * | 2019-01-04 | 2019-04-05 | 绵阳伟成科技有限公司 | A kind of common-mode inductor and its production technology |
| CN112185670A (en) * | 2020-09-25 | 2021-01-05 | 横店集团东磁股份有限公司 | Common mode inductor and preparation method thereof |
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|---|---|---|---|---|
| CN101556854A (en) * | 2008-04-09 | 2009-10-14 | 深圳振华富电子有限公司 | Lamination sheet type coil integration member and manufacturing method thereof |
| JP2010010425A (en) * | 2008-06-27 | 2010-01-14 | Shindengen Electric Mfg Co Ltd | Method of manufacturing inductor |
| CN101783227A (en) * | 2009-01-21 | 2010-07-21 | 深圳感通科技有限公司 | Plug-in common-mode inductor and manufacturing method thereof |
| CN103493156A (en) * | 2011-01-07 | 2014-01-01 | 伍尔特电子明康有限公司 | Flatwire planar transformer |
| CN205318961U (en) * | 2015-12-21 | 2016-06-15 | 深圳市高斯博电子科技有限公司 | Common mode inductance ware |
| CN207558513U (en) * | 2017-11-23 | 2018-06-29 | 深圳振华富电子有限公司 | Common-mode inductor |
-
2017
- 2017-11-23 CN CN201711180233.4A patent/CN107799271A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101556854A (en) * | 2008-04-09 | 2009-10-14 | 深圳振华富电子有限公司 | Lamination sheet type coil integration member and manufacturing method thereof |
| JP2010010425A (en) * | 2008-06-27 | 2010-01-14 | Shindengen Electric Mfg Co Ltd | Method of manufacturing inductor |
| CN101783227A (en) * | 2009-01-21 | 2010-07-21 | 深圳感通科技有限公司 | Plug-in common-mode inductor and manufacturing method thereof |
| CN103493156A (en) * | 2011-01-07 | 2014-01-01 | 伍尔特电子明康有限公司 | Flatwire planar transformer |
| CN205318961U (en) * | 2015-12-21 | 2016-06-15 | 深圳市高斯博电子科技有限公司 | Common mode inductance ware |
| CN207558513U (en) * | 2017-11-23 | 2018-06-29 | 深圳振华富电子有限公司 | Common-mode inductor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585123A (en) * | 2019-01-04 | 2019-04-05 | 绵阳伟成科技有限公司 | A kind of common-mode inductor and its production technology |
| WO2020140307A1 (en) * | 2019-01-04 | 2020-07-09 | 绵阳伟成科技有限公司 | Common mode inductor and production process therefor |
| CN109585123B (en) * | 2019-01-04 | 2021-01-26 | 绵阳伟成科技有限公司 | Common-mode inductor and production process thereof |
| CN112185670A (en) * | 2020-09-25 | 2021-01-05 | 横店集团东磁股份有限公司 | Common mode inductor and preparation method thereof |
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Application publication date: 20180313 |