CN204102695U - Current transformer - Google Patents
Current transformer Download PDFInfo
- Publication number
- CN204102695U CN204102695U CN201420292108.8U CN201420292108U CN204102695U CN 204102695 U CN204102695 U CN 204102695U CN 201420292108 U CN201420292108 U CN 201420292108U CN 204102695 U CN204102695 U CN 204102695U
- Authority
- CN
- China
- Prior art keywords
- current transformer
- skeleton
- magnetic core
- millimeters
- coil
- 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 - Lifetime
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011889 copper foil Substances 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 4
- 239000003292 glue Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
A kind of current transformer, comprise skeleton, coil, magnetic core, 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.The utility model can realize current transformer big current, low D.C. resistance, small form factor requirements, and it can be applied to all needs in current transformer product.
Description
Technical field
The utility model relates to electronic component, particularly relates to a kind of current transformer.
Background technology
The theoretical foundation of current transformer is electromagnetic induction, is generally made up of the iron core closed and winding.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 allowed.
Domestic and international current transformer specification and shape have a variety of, but the inductance ratings of traditional current transformer is nearly all below 20 peaces, cannot reach military requirements, thus limit its scope of application.
Utility model content
Based on this, be necessary the current transformer that a kind of big current is provided.
A kind of current transformer, comprise skeleton, coil, magnetic core, 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 such area occupied, achieves the big current of current transformer.
Wherein in an embodiment, the copper thickness of described Copper Foil line is 0.15 millimeter ~ 0.25 millimeter.Can ensure that rated current and the D.C. resistance of described current transformer control a suitable scope like this, also meet small form factor requirements simultaneously.
Wherein in an embodiment, the end of described Copper Foil line directly draws the shaping pin as described current transformer.Which simplify design.
Wherein in an embodiment, described magnetic core is bonded into two " mouth " font by the magnetic core point glue formula of two " E " shapes.
Wherein in an embodiment, described skeleton, coil and magnetic core point glue formula is bonded into one.Can ensure that product does not loosen like this.
Wherein in an embodiment, the length of described skeleton is respectively 7.7 millimeters, 6.7 millimeters, 4.7 millimeters.The miniaturization of this current transformer can be ensured like this.
Wherein in an embodiment, the stitch of described skeleton adopts Surface Mount structure.Be beneficial to the installation that this current transformer is last like this, make this current transformer structure tightr simultaneously.
Wherein in an embodiment, described current transformer adopts totally enclosed magnet shielding structure.Make this current transformer sealing and stability very good like this.
Accompanying drawing explanation
Fig. 1 is the plan structure figure of an embodiment current transformer;
The main TV structure figure that Fig. 2 is current transformer shown in Fig. 1;
The side-looking structure chart that Fig. 3 is 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 (namely the size of skeleton 110) of this current transformer is: 7.7 millimeters * 6.7 millimeters * 4.7 millimeters, namely length, width and height are respectively 7.7 millimeters, 6.7 millimeters, 4.7 millimeters.Achieve compact in size like this, with the saturation entering ensure that coiling 120.Be appreciated that the size of this current transformer in other embodiments can change within the specific limits.
Stitch 112 and the stitch 114 of skeleton 110 adopt Surface Mount structure, are beneficial to the installation of last current transformer like this, make this current transformer structure tightr simultaneously.Stitch 112 1 has 6, and be symmetrically located at two long limits of this current transformer, stitch 114 has two, is symmetrically located at two minor faces of this current transformer respectively.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.The big current of current transformer can be realized like this.From theory, the thicker rated current that it can bear of thickness of Copper Foil is larger, and the present invention is the thickness range of comprehensive rated current and size setting.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 directly draws the shaping pin as this current transformer, controls described pin smooth during processing assembling.The consistent smooth property of welding when this ensure that complete machine.
Magnetic core 130 is bonded into two " mouth " font by the magnetic core of two " E " shapes, and the bonding mode of two magnetic cores is the bonding of some glue formula.
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 ensure this current transformer better reliability when complete machine uses like this.
When mounted, this current transformer adopts totally enclosed magnet shielding structure.Make this current transformer sealing and stability very good like this.
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 big current of primary circuit can be become the standard value of secondary circuit.This current transformer can realize big current, low D.C. resistance, miniaturized requirement, can reach military requirements, can be applicable in some high-power circuits.This current transformer may be used on all needs in the product of current transformer, thus effectively expands its scope of application, and has wider operating frequency and higher temperature-resistance characteristic.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (7)
1. a current transformer, it is characterized in that, comprise skeleton, coil, magnetic core, described coil winding is on skeleton, described magnetic core is positioned at the cavity of skeleton, described coil adopts Copper Foil wire-wound system, and the copper thickness of described Copper Foil line is 0.15 millimeter ~ 0.25 millimeter, and the end of described Copper Foil line directly draws the shaping pin as described current transformer.
2. current transformer according to claim 1, is characterized in that, described magnetic core is bonded into two " mouth " font by the magnetic core point glue formula of two " E " shapes.
3. current transformer according to claim 1, is characterized in that, described skeleton, coil and magnetic core point glue formula is bonded into one.
4. 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.
5. current transformer according to claim 1, is characterized in that, the stitch of described skeleton adopts Surface Mount structure.
6. current transformer according to claim 5, is characterized in that, the spacing of described stitch is 1.85 millimeters, and stitch is wide 0.6 millimeter.
7. the current transformer according to any one of claim 1 ~ 6, is characterized in that, described current transformer adopts totally enclosed magnet shielding structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420292108.8U CN204102695U (en) | 2014-06-03 | 2014-06-03 | Current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420292108.8U CN204102695U (en) | 2014-06-03 | 2014-06-03 | Current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204102695U true CN204102695U (en) | 2015-01-14 |
Family
ID=52271102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420292108.8U Expired - Lifetime CN204102695U (en) | 2014-06-03 | 2014-06-03 | Current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204102695U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036936A (en) * | 2014-06-03 | 2014-09-10 | 深圳振华富电子有限公司 | Current transformer |
-
2014
- 2014-06-03 CN CN201420292108.8U patent/CN204102695U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036936A (en) * | 2014-06-03 | 2014-09-10 | 深圳振华富电子有限公司 | Current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150114 |