CN104217846B - Inductor - Google Patents
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- CN104217846B CN104217846B CN201410471793.5A CN201410471793A CN104217846B CN 104217846 B CN104217846 B CN 104217846B CN 201410471793 A CN201410471793 A CN 201410471793A CN 104217846 B CN104217846 B CN 104217846B
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Abstract
A kind of inductor, including coil, magnetic core, the coil is wrapped on the magnetic core, and the coil adopts Copper Foil line coiling, and the thickness of the coil is 0.3 millimeter～0.5 millimeter, and the width of the coil is 1.3 millimeters～3.0 millimeters.The present invention can control the rated current of inductor in a stable scope.
Description
Technical field
The present invention relates to electronic component, more particularly to a kind of inductor.
Background technology
Inductor is typically made up of skeleton, winding, radome, encapsulating material, magnetic core or iron core etc..Rated current is used as electricity
One major parameter of sense, refers to the maximum current value that inductor can be born under the working environment for allowing.Some high power electricity
Road is higher to the rated current requirement of inductor, therefore occurs in that high-current inductor.
High-current inductor specification has many kinds with shape both at home and abroad, but traditional high-current inductor can not control its volume
Electric current is determined in a stable scope, it is impossible to reach military requirements, so as to limit its scope of application.
Content of the invention
It is based on this, it is necessary to provide a kind of inductor of rated current in a stable scope.
A kind of inductor, including coil, magnetic core, the coil is wrapped on the magnetic core, and the coil adopts Copper Foil line
Coiling, the thickness of the coil is 0.3 millimeter～0.5 millimeter, and the width of the coil is 1.3 millimeters～3.0 millimeters.
Above-mentioned inductor, coil adopt Copper Foil line coiling, and such area occupied is little and resistance to electric current, it is achieved that inductor big
Electric current, while by 0.3 millimeter～0.5 millimeter of the THICKNESS CONTROL by the coil, the width of the coil is 1.3 millimeters～
3.0 millimeters, so can ensure that the rated current of inductor in 20 amperes～50 amperes so one stable scopes.
Wherein in one embodiment, the end of the Copper Foil line directly leads out the pin being molded as the inductor.
Which simplify design.
Wherein in one embodiment, the pin Surface Mount is on the magnetic core.So be conducive to the installation of the inductor,
Make the inductor structure tightr simultaneously.
Wherein in one embodiment, it is wicking position that the pin draws the part that exposes from the magnetic core.
Wherein in one embodiment, on the magnetic core, air gap is provided with.So can ensure that the magnetic core in high current
In the case of unsaturated.
Wherein in one embodiment, the coil includes two groups around the winding to contrary, equal turn numbers.So causing should
Inductor has two characteristic of common mode and differential mode.
Wherein in one embodiment, the magnetic core is FERRITE CORE, and the coil twined by the way of Double-wire parallel wound
It is wound on the magnetic core.
Wherein in one embodiment, the coil is bonded into one with magnetic core, and the mode of bonding is bonded for dispensing formula.
Wherein in one embodiment, the length of the skeleton is respectively 7.0 millimeters, 6.2 millimeters, 2.8 millimeters.This
Sample can ensure that the miniaturization of the inductor.
Wherein in one embodiment, the inductor adopts totally enclosed magnet shielding structure.So so that the inductor
Sealing and stability are very good.
Description of the drawings
Fig. 1 is the overlooking structure figure of an embodiment inductor；
Side block diagrams of the Fig. 2 for inductor shown in Fig. 1；
Three-dimensional structure diagrams of the Fig. 3 for inductor shown in Fig. 1；
Fig. 4 is the welding schematic diagram of an embodiment inductor；
Fig. 5 is the welding schematic diagram of another embodiment inductor.
Specific embodiment
Refer to Fig. 1 to Fig. 3, the respectively vertical view of an embodiment inductor, side-looking, three-dimensional structure diagram.The inductor bag
Include magnetic core 110, coil (not shown).The coil is wrapped on magnetic core 110, and the coil adopts Copper Foil line coiling.
In the present embodiment, the size of the inductor is：7.0 millimeters * 6.2 millimeters * 2.8 millimeters, i.e. length and width high score
Wei 7.0 millimeters, 6.2 millimeters, 2.8 millimeters.Be achieved in that compact in size, with entering to ensure that the saturation degree of coiling.
It is appreciated that the size of the inductor can change within the specific limits in other embodiments.
In the present embodiment, the end of the Copper Foil line directly leads out the pin 120 being molded as the inductor.Pin
120 adopt Surface Mount structure, i.e. 120 Surface Mount of pin is so beneficial to the installation of last inductor, while making the electricity on magnetic core 110
Sensor structure is tightr.It is wicking position that pin 120 draws the part that exposes from magnetic core 110, welds when so can ensure that whole machine
Connect good.
The thickness of the coil is 0.3 millimeter～0.5 millimeter, and the width of the coil is 1.3 millimeters～3.0 millimeters.This
Sample can ensure that the inductor current scope is stable between 20 amperes～50 amperes.In theory, the thickness of coil is got over
The thick rated current which can bear is bigger, and the present invention is the thickness range that comprehensive rated current and size set.Can
To understand, in other embodiments, coil thickness can be with certain interior on a large scale fluctuation.
Air gap 140 is provided with magnetic core 110.So ensure that magnetic core 110 is unsaturated in the case of high current.Air gap 140
Size can be according to the inductor to inductance value requirement be adjusted.
In the present embodiment, magnetic core 110 is FERRITE CORE, and the coil is wrapped in magnetic core by the way of Double-wire parallel wound
On 110.
Adhesive glue 130 is mainly used in the coil, magnetic core 110, pin 120 are bonded into one, then through hot setting
Make three be fixed together well, so can ensure that inductor better reliability when whole machine is used.
When mounted, the inductor adopts totally enclosed magnet shielding structure.So so that the inductor sealing and stable
Property is very good.
In addition, in the present embodiment, the coil includes two groups around the winding to contrary, equal turn numbers.Pin 120 has altogether
There are 4, the pin 120 that each winding is drawn is two.So so that the inductor has two characteristic of common mode and differential mode.Specifically
Refer to Fig. 4 and Fig. 5.In welding, if selecting the welding manner shown in Fig. 4, inductor to show its common mode characteristic, if choosing
The welding manner shown in Fig. 5 is selected, inductor shows its differential-mode characteristic.
Above-mentioned inductor meets the test requirements document of GJB360B, and rated current can reach 20～50 amperes, and D.C. resistance is little
In 1 milliohm.The inductor can realize high current, low D.C. resistance, the requirement of miniaturization, can reach military requirements, Neng Goushi
In for some high-power circuits.The inductor may be used in the product of inductor in need, so as to effectively expand
Its scope of application, and with wider operating frequency and higher temperature-resistance characteristic, the inductor can be subzero in temperature range
Work in the environment of 55 degrees Celsius～125 degrees Celsius, the scope of its storage temperature is subzero 40 degrees Celsius～85 degrees Celsius.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of inductor, it is characterised in that including coil, magnetic core, the coil is wrapped on the magnetic core, and the coil is adopted
With Copper Foil line coiling, the thickness of the coil is 0.3 millimeter～0.5 millimeter, and the width of the coil is 1.3 millimeters～3.0 millis
Rice, the electric current of the inductor is between 20 amperes～50 amperes；The D.C. resistance of the inductor is less than 1 milliohm.
2. inductor according to claim 1, it is characterised in that the end of the Copper Foil line directly leads out shaping as institute
State the pin of inductor.
3. inductor according to claim 2, it is characterised in that the pin Surface Mount is on the magnetic core.
4. inductor according to claim 2, it is characterised in that the pin is drawn the part that exposes and is from the magnetic core
Wicking position.
5. inductor according to claim 1, it is characterised in that be provided with air gap on the magnetic core.
6. inductor according to claim 1, it is characterised in that the coil includes two groups around to contrary, equal turn numbers
Winding.
7. inductor according to claim 1, it is characterised in that the magnetic core is FERRITE CORE, the coil is adopted
The mode of Double-wire parallel wound is wrapped on the magnetic core.
8. inductor according to claim 1, it is characterised in that the coil is bonded into one with magnetic core, the side of bonding
Formula is bonded for dispensing formula.
9. inductor according to claim 1, it is characterised in that the length of the inductor be respectively 7.0 millimeters,
6.2 millimeters, 2.8 millimeters.
10. the inductor according to any one of claim 1～9, it is characterised in that the inductor adopts totally enclosed magnetic
Shielding construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410471793.5A CN104217846B (en) | 2014-09-16 | 2014-09-16 | Inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410471793.5A CN104217846B (en) | 2014-09-16 | 2014-09-16 | Inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104217846A CN104217846A (en) | 2014-12-17 |
| CN104217846B true CN104217846B (en) | 2017-03-15 |
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| CN201410471793.5A Active CN104217846B (en) | 2014-09-16 | 2014-09-16 | Inductor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108492965A (en) * | 2018-03-14 | 2018-09-04 | 北京航天发射技术研究所 | A kind of New Type of Differential common mode filtering induction structure |
| CN108766741A (en) * | 2018-07-19 | 2018-11-06 | 深圳振华富电子有限公司 | Large power winding chip inductor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202564951U (en) * | 2012-05-11 | 2012-11-28 | 南车洛阳机车有限公司 | Bipolar common-mode filter |
| CN203218058U (en) * | 2013-03-22 | 2013-09-25 | 深圳市京泉华科技股份有限公司 | Inductor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020067234A1 (en) * | 2000-12-01 | 2002-06-06 | Samuel Kung | Compact surface-mountable inductors |
| CN101499361A (en) * | 2008-09-12 | 2009-08-05 | 深圳振华富电子有限公司 | Inducer |
| US7994888B2 (en) * | 2009-12-21 | 2011-08-09 | Volterra Semiconductor Corporation | Multi-turn inductors |
| CN202275684U (en) * | 2011-09-02 | 2012-06-13 | 英达德科技股份有限公司 | Thin high-current inductor |
| CN104036936A (en) * | 2014-06-03 | 2014-09-10 | 深圳振华富电子有限公司 | Current transformer |
| CN204315356U (en) * | 2014-09-16 | 2015-05-06 | 深圳振华富电子有限公司 | Inductor |
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2014
- 2014-09-16 CN CN201410471793.5A patent/CN104217846B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202564951U (en) * | 2012-05-11 | 2012-11-28 | 南车洛阳机车有限公司 | Bipolar common-mode filter |
| CN203218058U (en) * | 2013-03-22 | 2013-09-25 | 深圳市京泉华科技股份有限公司 | Inductor |
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