CN206211833U - A kind of anti-interference structure of power supply - Google Patents

A kind of anti-interference structure of power supply Download PDF

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Publication number
CN206211833U
CN206211833U CN201621232044.8U CN201621232044U CN206211833U CN 206211833 U CN206211833 U CN 206211833U CN 201621232044 U CN201621232044 U CN 201621232044U CN 206211833 U CN206211833 U CN 206211833U
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China
Prior art keywords
common mode
winding
mode inductance
skeleton
stitch
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CN201621232044.8U
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Chinese (zh)
Inventor
魏奇斌
董远剑
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Shenzhen Profit Source Electronics Co Ltd
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Shenzhen Profit Source Electronics Co Ltd
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Abstract

A kind of anti-interference structure of power supply, including a common mode inductance and an X electric capacity, the common mode inductance includes common mode skeleton, magnetic core and two windings of coiling of being gone in ring by copper sheet, common mode skeleton is provided with draw-in groove and four stitch, two windings are both placed in the draw-in groove of common mode skeleton, each winding overhang welds together with a stitch, and magnetic core is through two rings of winding and is fixed on common mode skeleton;One winding of common mode inductance is connected by the input of stitch corresponding with the winding and capable AC electricity, and another winding of common mode inductance is connected by the input of stitch corresponding with the winding and power rectifier bridge;X electric capacity is connected in parallel on two one end of winding of common mode inductance, the utility model only needs to two devices, cost of labor and material cost are saved, and common mode inductance uses copper sheet winding, inductance value is increased considerably, has greatly reinforced antijamming capability, in addition, because copper sheet is conducive to radiating, can effectively extend the service life of product.

Description

A kind of anti-interference structure of power supply
Technical field
The utility model is related to the Anti-Jamming Technique field of Switching Power Supply, and in particular to a kind of anti-interference structure of power supply.
Background technology
Present 40W power above Switching Power Supply on the market, is substantially all and uses LCL(I.e.:Common mode inductance+X electric capacity+common mode Inductance)Form process EMI problems, this structural approach is old, there is many drawbacks, because of 4 of common mode inductance during installation Copper cash is difficult fixed, and causes the difficult plug-in unit in production, and then causes Switching Power Supply easily to break down;Meanwhile, this anti-interference electricity Road needs 3 devices of grafting, which substantially increases equipment cost and cost of labor.
Further, since common mode inductance finite volume in itself, when electric current is very big, it is necessary to the diameter of copper is also accordingly increased, this When, it is just few to be wound on the copper cash number of turns in magnet ring, so that inductance value is also just small, i.e. antijamming capability also phase strain differential.
Utility model content
The utility model is in order to solve the above mentioned problem that prior art is present, there is provided a kind of to reduce number of devices, And the anti-interference structure of the power supply of good in anti-interference performance.
Realize above-mentioned purpose, the utility model provides a kind of anti-interference structure of power supply, including a common mode inductance and One X electric capacity, the common mode inductance includes common mode skeleton, magnetic core and two windings of coiling of being gone in ring by copper sheet, described Common mode skeleton is provided with draw-in groove and four stitch, and two windings are both placed in the draw-in groove of common mode skeleton, the end of each winding Weld together with a stitch, the magnetic core is through two rings of winding and is fixed on common mode skeleton;Common mode inductance A winding by stitch corresponding with the winding and capable AC electricity input be connected, another winding of common mode inductance It is connected by the input of stitch corresponding with the winding and power rectifier bridge;The X electric capacity be connected in parallel on common mode inductance two around One end of group.
Used as optimal technical scheme of the present utility model, the winding of the common mode inductance is cladded with and is stamped insulating barrier, described exhausted Edge layer is formed after soaking varnish.
Used as optimal technical scheme of the present utility model, the magnetic core is the material of 12K.
The anti-interference structure of power supply of the present utility model can reach following beneficial effect compared with traditional anti-interference structure:
1st, using a common mode inductance, original circular copper wire is changed to copper sheet, significantly increases inductance value by this common mode.
2nd, the width of copper sheet can increase, and make the temperature rise of common mode inductance itself and can also decline a lot, extend whole product Service life.
3rd, a common mode inductance is saved, material cost is saved, the artificial production cost of enterprise has been saved.
4th, a common mode inductance is saved, loss during power work is reduced, so as to improve the operating efficiency of power supply.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
The structural representation of the common mode inductance of the example that Fig. 1 is provided for the anti-interference structure of the utility model power supply.
Fig. 2 is the diagrams illustrating stitches of the utility model common mode inductance.
In figure:1st, common mode skeleton, 2, copper sheet, 3, stitch, 4, magnetic core.
The utility model purpose is realized, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.In preferred embodiment It is cited such as " on ", D score, "left", "right", " centre " and " one " term, only understanding for ease of narration, and be not used to The enforceable scope of the utility model is limited, being altered or modified for its relativeness is changed under technology contents, when also without essence It is considered as the enforceable category of the utility model.
The structural representation of the common mode inductance of the example that Fig. 1 is provided for the anti-interference structure of the utility model power supply, Fig. 2 It is the diagrams illustrating stitches of the utility model common mode inductance.
As depicted in figs. 1 and 2, the anti-interference structure of power supply includes a common mode inductance and an X electric capacity, the common mode electricity Sense includes common mode skeleton 1, magnetic core 4 and two windings of coiling of being gone in ring by copper sheet 2, and the common mode skeleton 1 is provided with card Groove and four stitch 3, two windings are both placed in the draw-in groove of common mode skeleton 1, and the end of each winding is welded with a stitch 3 It is connected together, the magnetic core 4 is through two rings of winding and is fixed on common mode skeleton 1;One winding of common mode inductance leads to The input for crossing stitch 3 corresponding with the winding and capable AC electricity is connected, another winding of common mode inductance by with this around The corresponding stitch 3 of group is connected with the input of power rectifier bridge;The X electric capacity is connected in parallel on two one end of winding of common mode inductance.
In specific implementation, the winding of the common mode inductance is overcoating to be stamped insulating barrier, and the insulating barrier is by soaking varnish After formed.
In specific implementation, the magnetic core 4 is the material of 12K.
In order to allow those skilled in the art to more fully understand and realize the technical solution of the utility model, this is explained in detail below The structural principle of utility model.
Using in circuit:One winding of common mode inductance by stitch 3 corresponding with the winding and capable AC electricity Input is connected, and another winding of common mode inductance is by stitch 3 corresponding with the winding and the input phase of power rectifier bridge Even, common mode inductance and X electric capacity are in parallel, constitute a complete EMI anti-jamming circuit structure.
Anti-jamming circuit structure of the present utility model, only with LC(I.e.:Common mode inductance+X electric capacity), common mode inductance use The magnetic core 4 of 12K materials, coil uses the form of copper sheet 2, and copper sheet 2 significantly increases sectional area, while saved space, can be with More around the number of turns so that the inductance value of common mode inductance can accomplish ideal value, so that antijamming capability is greatly reinforced.
Meanwhile, using this anti-interference structure, manufacturing enterprise only needs to insert 2 devices of common mode inductance and X electric capacity, has saved people Work cost, also saves material cost.
It is that base has been established in the debugging of six grades of efficiency in addition, because reducing a common mode inductance, also just accordingly reducing loss Plinth.
Although the foregoing describing specific embodiment of the present utility model, those skilled in the art should manage Solution, these are merely illustrative of, and can make various changes or modifications to present embodiment, without departing from original of the present utility model Reason and essence, protection domain of the present utility model are only limited by the claims that follow.

Claims (3)

1. a kind of anti-interference structure of power supply, it is characterised in that including a common mode inductance and an X electric capacity, the common mode electricity Sense includes that common mode skeleton, magnetic core and two are gone in ring the windings of coiling by copper sheet, the common mode skeleton be provided with draw-in groove with Four stitch, two windings are both placed in the draw-in groove of common mode skeleton, and the end of each winding is welded on one with a stitch Rise, the magnetic core is through two rings of winding and is fixed on common mode skeleton;One winding of common mode inductance by with this around The corresponding stitch of group is connected with the input of capable AC electricity, and another winding of common mode inductance is by pin corresponding with the winding Pin is connected with the input of power rectifier bridge;The X electric capacity is connected in parallel on two one end of winding of common mode inductance.
2., according to the anti-interference structure of the power supply described in claim 1, its feature is in the winding of the common mode inductance is overcoating to be stamped Insulating barrier, the insulating barrier is formed after soaking varnish.
3., according to the anti-interference structure of the power supply described in claim 1 or 2, its feature is in the magnetic core is the material of 12K.
CN201621232044.8U 2016-11-17 2016-11-17 A kind of anti-interference structure of power supply Active CN206211833U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621232044.8U CN206211833U (en) 2016-11-17 2016-11-17 A kind of anti-interference structure of power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621232044.8U CN206211833U (en) 2016-11-17 2016-11-17 A kind of anti-interference structure of power supply

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108790862A (en) * 2018-04-28 2018-11-13 内蒙古青杉汽车有限公司 It is a kind of to reduce the high tension loop of electromagnetic interference, method and system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108790862A (en) * 2018-04-28 2018-11-13 内蒙古青杉汽车有限公司 It is a kind of to reduce the high tension loop of electromagnetic interference, method and system
CN108790862B (en) * 2018-04-28 2020-11-27 内蒙古青杉汽车有限公司 High-voltage loop, method and system for reducing electromagnetic interference

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