CN104036936A - Current transformer - Google Patents
Current transformer Download PDFInfo
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- CN104036936A CN104036936A CN201410242727.0A CN201410242727A CN104036936A CN 104036936 A CN104036936 A CN 104036936A CN 201410242727 A CN201410242727 A CN 201410242727A CN 104036936 A CN104036936 A CN 104036936A
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- current transformer
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Abstract
A current transformer comprises a framework, a coil and a magnetic core, wherein the coil is wound around the framework, the magnetic core is located in a cavity of the framework, and the coil is formed by winding a copper foil wire. The requirements that the current transformer is high in current, low in direct-current resistance and small can be met, and the current transformer can be applied to all products needing the current transformer.
Description
Technical field
The present invention relates to electronic component, particularly relate to a kind of current transformer.
Background technology
The theoretical foundation of current transformer is electromagnetic induction, generally closed iron core and winding, consists of.Rated current, as a major parameter of current transformer, refers to the lowest high-current value that current transformer can bear under the operational environment allowing.
Domestic and international current transformer specification and shape have a variety of, but the specified inductance of traditional current transformer is nearly all below 20 peaces, cannot reach military requirement, thereby have limited its scope of application.
Summary of the invention
Based on this, be necessary to provide a kind of current transformer of large electric current.
A current transformer, comprises skeleton, coil, magnetic core, and described coil winding is on skeleton, and described magnetic core is positioned at the cavity of skeleton, and described coil adopts Copper Foil wire-wound system.
Above-mentioned current transformer, coil adopts Copper Foil wire-wound system, and the little and resistance to electric current of area occupied has like this been realized the large electric current of current transformer.
In an embodiment, the copper thickness of described Copper Foil line is 0.15 millimeter～0.25 millimeter therein.Rated current and the D.C. resistance that can guarantee so described current transformer are controlled at a suitable scope, have also met miniaturization requirement simultaneously.
In an embodiment, the end of described Copper Foil line is directly drawn moulding as the pin of described current transformer therein.Simplified like this design.
In an embodiment, described magnetic core is bonded into two " mouth " fonts by the magnetic core of two " E " shapes therein, and the bonding mode of two magnetic cores is that some glue formula is bonding.
In an embodiment, described skeleton, coil and magnetic core are bonded into one therein, and bonding mode is that some glue formula is bonding.Can guarantee that like this product is not loosening.
In an embodiment, the length of described skeleton is respectively 7.7 millimeters, 6.7 millimeters, 4.7 millimeters therein.Can guarantee the miniaturization of this current transformer like this.
In an embodiment, the stitch of described skeleton adopts Surface Mount structure therein.Be beneficial to so the last installation of this current transformer, make this current transformer structure tightr simultaneously.
In an embodiment, described current transformer adopts totally enclosed magnet shielding structure therein.Make like this this current transformer sealing and stability very good.
Accompanying drawing explanation
Fig. 1 is the plan structure figure of an embodiment current transformer;
Fig. 2 is the main TV structure figure of current transformer shown in Fig. 1;
Fig. 3 is the side-looking structure chart of current transformer shown in Fig. 1.
Embodiment
Please refer to Fig. 1 to Fig. 3, be respectively the overlooking of an embodiment current transformer, mainly look, side-looking structure chart.This current transformer comprises skeleton 110, coil 120, magnetic core 130.Coil 120 is wrapped on skeleton 110, and magnetic core 130 is positioned at the cavity of skeleton 110, and coil 120 adopts Copper Foil wire-wound system.
In the present embodiment, the size of this current transformer (the namely size of skeleton 110) is: 7.7 millimeters * 6.7 millimeters * 4.7 millimeters, length and width are high is respectively 7.7 millimeters, 6.7 millimeters, 4.7 millimeters.Realized like this compact in size, with the saturation of having entered to guarantee coiling 120.Be appreciated that the size of this current transformer can change within the specific limits in other embodiments.
The stitch 112 of skeleton 110 and stitch 114 adopt Surface Mount structure, are beneficial to like this installation of last current transformer, make this current transformer structure tightr simultaneously.Stitch 112 1 has 6, is symmetrically located at two long limits of this current transformer, and stitch 114 has two, is symmetrically located at respectively two minor faces of this current transformer.The spacing of stitch 112 is 1.85 millimeters, and stitch 112 is wide 0.6 millimeter.
Coil 120 adopts Copper Foil wire-wound system, and the copper thickness of described Copper Foil line is 0.15 millimeter～0.25 millimeter.Can realize so the large electric current of current transformer.From theory, the thicker rated current that it can bear of the thickness of Copper Foil is just larger, and the present invention is the thickness range that comprehensive rated current and size are set.Be appreciated that in other embodiments, copper thickness be 0.15 millimeter～0.25 millimeter can also certain on a large scale in fluctuation.
The end of described Copper Foil line is directly drawn moulding as the pin of this current transformer, controls described pin smooth during processing assembling.The consistent smooth property of welding while having guaranteed like this complete machine.
Magnetic core 130 is bonded into two " mouth " fonts by the magnetic core of two " E " shapes, and the bonding mode of two magnetic cores is that some glue formula is bonding.
Adhesive glue 140 is mainly used in skeleton 110, coil 120, magnetic core 130 to be bonded into one, and then through hot setting, three is fixed together well, can guarantee like this this current transformer better reliability when complete machine uses.
When mounted, this current transformer adopts totally enclosed magnet shielding structure.Make like this this current transformer sealing and stability very good.
Above-mentioned current transformer meets the test requirements document of GJB360B, and rated current can reach 10～20 amperes, and D.C. resistance is 0.5 milliohm～1.2 milliohm, the large electric current of primary circuit can be become to the standard value of secondary circuit.This current transformer can be realized the requirement of large electric current, low D.C. resistance, miniaturization, can reach military requirement, can be applicable in some high-power circuits.This current transformer may be used in all products that need current transformer, thereby has effectively expanded its scope of application, and has wider operating frequency and higher heatproof characteristic.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a current transformer, is characterized in that, comprises skeleton, coil, magnetic core, and described coil winding is on skeleton, and described magnetic core is positioned at the cavity of skeleton, and described coil adopts Copper Foil wire-wound system.
2. current transformer according to claim 1, is characterized in that, the copper thickness of described Copper Foil line is 0.15 millimeter～0.25 millimeter.
3. current transformer according to claim 2, is characterized in that, the end of described Copper Foil line is directly drawn moulding as the pin of described current transformer.
4. current transformer according to claim 1, is characterized in that, described magnetic core is bonded into two " mouth " fonts by the magnetic core of two " E " shapes, and the bonding mode of two magnetic cores is that some glue formula is bonding.
5. current transformer according to claim 1, is characterized in that, described skeleton, coil and magnetic core are bonded into one, and bonding mode is that some glue formula is bonding.
6. current transformer according to claim 1, is characterized in that, the length of described skeleton is respectively 7.7 millimeters, 6.7 millimeters, 4.7 millimeters.
7. current transformer according to claim 1, is characterized in that, the stitch of described skeleton adopts Surface Mount structure.
8. current transformer according to claim 7, is characterized in that, the spacing of described stitch is 1.85 millimeters, and stitch is wide 0.6 millimeter.
9. according to the current transformer described in claim 1～8 any one, it is characterized in that, described current transformer adopts totally enclosed magnet shielding structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242727.0A CN104036936A (en) | 2014-06-03 | 2014-06-03 | Current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242727.0A CN104036936A (en) | 2014-06-03 | 2014-06-03 | Current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104036936A true CN104036936A (en) | 2014-09-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410242727.0A Pending CN104036936A (en) | 2014-06-03 | 2014-06-03 | Current transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN104036936A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217846A (en) * | 2014-09-16 | 2014-12-17 | 深圳振华富电子有限公司 | Inductor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008010660A (en) * | 2006-06-29 | 2008-01-17 | Kowa Denshi Kogyo Kk | Zero-phase current transformer |
| CN201549355U (en) * | 2009-10-21 | 2010-08-11 | 成都金之川电子有限公司 | Embedded type micro transformer |
| CN201601015U (en) * | 2009-10-29 | 2010-10-06 | 成都金之川电子有限公司 | Large-current mini mutual inductor meeting basic insulation |
| CN202339812U (en) * | 2011-12-19 | 2012-07-18 | 惠州三盛电子有限公司 | Current transformer |
| CN203013496U (en) * | 2012-09-28 | 2013-06-19 | 成都金之川电子有限公司 | 25A insulation-meeting current transformer |
| CN103500626A (en) * | 2013-08-22 | 2014-01-08 | 深圳振华富电子有限公司 | Inductor |
| CN103531342A (en) * | 2012-07-05 | 2014-01-22 | 宁波经济技术开发区恒率电源科技有限公司 | Medium-and high-power high-frequency current transformer applied to module power supply |
| CN204102695U (en) * | 2014-06-03 | 2015-01-14 | 深圳振华富电子有限公司 | Current transformer |
-
2014
- 2014-06-03 CN CN201410242727.0A patent/CN104036936A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008010660A (en) * | 2006-06-29 | 2008-01-17 | Kowa Denshi Kogyo Kk | Zero-phase current transformer |
| CN201549355U (en) * | 2009-10-21 | 2010-08-11 | 成都金之川电子有限公司 | Embedded type micro transformer |
| CN201601015U (en) * | 2009-10-29 | 2010-10-06 | 成都金之川电子有限公司 | Large-current mini mutual inductor meeting basic insulation |
| CN202339812U (en) * | 2011-12-19 | 2012-07-18 | 惠州三盛电子有限公司 | Current transformer |
| CN103531342A (en) * | 2012-07-05 | 2014-01-22 | 宁波经济技术开发区恒率电源科技有限公司 | Medium-and high-power high-frequency current transformer applied to module power supply |
| CN203013496U (en) * | 2012-09-28 | 2013-06-19 | 成都金之川电子有限公司 | 25A insulation-meeting current transformer |
| CN103500626A (en) * | 2013-08-22 | 2014-01-08 | 深圳振华富电子有限公司 | Inductor |
| CN204102695U (en) * | 2014-06-03 | 2015-01-14 | 深圳振华富电子有限公司 | Current transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217846A (en) * | 2014-09-16 | 2014-12-17 | 深圳振华富电子有限公司 | Inductor |
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Application publication date: 20140910 |
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| RJ01 | Rejection of invention patent application after publication |