CN105261461A - Transformer winding circuit and structure capable of resisting common-mode interference and portable charger - Google Patents
Transformer winding circuit and structure capable of resisting common-mode interference and portable charger Download PDFInfo
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- CN105261461A CN105261461A CN201510761408.5A CN201510761408A CN105261461A CN 105261461 A CN105261461 A CN 105261461A CN 201510761408 A CN201510761408 A CN 201510761408A CN 105261461 A CN105261461 A CN 105261461A
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Abstract
The invention discloses a transformer winding circuit and structure capable of resisting common-mode interference and a portable charger. The charger comprises a transformer and a winding structure thereof, wherein the winding structure comprises a primary winding, an auxiliary winding, a shielding winding, a secondary winding, a first insulating layer, a second insulating layer, a winding skeleton, a first compensation winding and a second compensation winding; the first compensation winding is arranged between the primary winding of the transformer and a magnetic core; the second compensation winding is arranged between the primary winding and the secondary winding; the first compensation winding and the second compensation winding both are connected to a compensation capacitor in parallel; and the compensation capacitor is connected with a switch tube in parallel. The common-mode interference is significantly inhibited under the condition of not increasing a component or the cost; a first wire hanging bump and a second wire hanging bump are cooperatively added to the top and the bottom of the same side of the transformer skeleton; unified wire diameters are adopted by the first compensation winding, the primary winding, the second compensation winding, the auxiliary winding and the shielding winding; and automatic winding is finished on the same automatic winding equipment.
Description
Technical field
The present invention relates to a kind of transformer coiling circuit, structure and the portable charger of resisting common mode disturbances.
Background technology
Along with the use density of electronics and electric equipment sharply increases, radio-frequency spectrum is day by day crowded, also more and more higher to the EMC Requirements of electronic equipment.Electromagnetic interference (EMI) be cause electrically, electronic equipment can not the main cause of reliably working in certain electromagnetic environment, great harm can be caused to electronic equipment, light then device damage, heavy then endanger personal safety, mainly can be divided into common mode disturbances and differential mode interference by its pattern.In actual applications, most products Electro Magnetic Compatibility is defective all owing to can not common mode disturbances be suppressed very well to cause.
Portable charger input side, the high frequency that there is potential difference between outlet side and ground (magnetic core) changes is the basic reason causing common mode disturbances.The measure of usual suppression common mode disturbances is by increasing the element such as filter, inductor, due to portable charger small volume, require that the device such as filter, inductor is small and exquisite as far as possible, manufacturing cost is high, thus causes portable charger cost obviously to increase.
Existing transformer overcomes the problem of deficient manufacturing procedure by the insulating barrier increasing insulating tape coiling after each winding, with the evenness ensureing each winding and the cushion effect increased between winding, arranging like this requires that automation equipment needs the corresponding structure and the increase mechanical movement step that increase bag insulating tape, add the requirement to equipment, too increase the coiling time of Transformer Winding.
The armature winding coiling of existing transformer normally adopts different wire diameter, the long-pending object of transformer wire inclusion can be reduced again around full one deck to meet, the winding of different wire diameter needs different automatic winding equipment to complete respectively, namely add the time that number of devices turn increases product transmission and switching device, cause the waste of manpower and materials.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of when not increasing components and parts and cost, significantly can resist the transformer coiling circuit of common mode disturbances, structure and be convenient to the portable charger of automated production.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of circuit resisting the transformer coiling of common mode disturbances, comprise main winding, secondary winding, shield winding, auxiliary winding, magnetic core, switching tube, between the main winding and magnetic core of transformer, the first compensative winding is set, between main winding and secondary winding, arrange the second compensative winding, the first compensative winding and the second compensative winding are parallel to jointly to be tasted on electric capacity with the benefit of paralleled power switches.
A kind of winding structure of transformer resisting common mode disturbances, comprise main winding, auxiliary winding, shield winding, secondary winding, the first insulating barrier, the second insulating barrier, bobbin, magnetic core, switching tube, also be included in the first compensative winding arranged between the main winding of transformer and magnetic core and the second compensative winding arranged between main winding and secondary winding, the first compensative winding and the second compensative winding are parallel to jointly to be tasted on electric capacity with the benefit of paralleled power switches.
A kind of winding structure of transformer resisting common mode disturbances, first compensative winding is close around the integer layer with at least one deck on bobbin, main winding is at the outer close integer layer around to few one deck of the first compensative winding, the close integer layer around the outer at least one deck of described main winding of second compensative winding, auxiliary winding and shield winding doubling are outer close around one deck or auxiliary winding around the second compensative winding altogether, shield winding is sequentially set in outside the second compensative winding from-inner-to-outer, then the first insulating barrier is obtained at its outer smooth coated some layers of insulating tapes, secondary winding is at the outer close integer layer around to few one deck of the first insulating barrier, the second insulating barrier is obtained at the exhausted some layers of edge adhesive tape of secondary winding outer cladding.
Resist a winding structure of transformer for common mode disturbances, described main winding, auxiliary winding, shield winding, the first compensative winding and the second compensative winding adopt identical wire diameter.
A kind of portable charger resisting common mode disturbances, comprise transformer and winding structure thereof, it is characterized in that: winding structure of transformer comprises main winding, auxiliary winding, shield winding, secondary winding, the first insulating barrier, the second insulating barrier, bobbin, also be included in the first compensative winding arranged between the main winding of transformer and magnetic core and the second compensative winding arranged between main winding and secondary winding, the first compensative winding and the second compensative winding are parallel to jointly to be tasted on electric capacity with the benefit of paralleled power switches.
A kind of portable charger resisting common mode disturbances, first compensative winding is close around the integer layer with at least one deck on bobbin, main winding is at the outer close integer layer around to few one deck of the first compensative winding, the close integer layer around the outer at least one deck of described main winding of second compensative winding, auxiliary winding and shield winding doubling are outer close around one deck or auxiliary winding around the second compensative winding altogether, shield winding is sequentially set in outside the second compensative winding from-inner-to-outer, then the first insulating barrier is obtained at its outer smooth coated some layers of insulating tapes, secondary winding is at the outer close integer layer around to few one deck of the first insulating barrier, the second insulating barrier is obtained at the exhausted some layers of edge adhesive tape of secondary winding outer cladding.
Resist a portable charger for common mode disturbances, described main winding, auxiliary winding, shield winding, the first compensative winding and the second compensative winding adopt identical wire diameter.
A kind of portable charger resisting common mode disturbances, the top of transformer framework homonymy and bottom correspondence are provided with the first hanging wire salient point and the second hanging wire salient point that can hang up for winding loop line, and winding loop line is entangled on stitch after pulling into straight line respectively through described first hanging wire salient point and the second hanging wire salient point again.
A kind of portable charger resisting common mode disturbances, described second hanging wire salient point is cuboid or nearly rectangular shape, be arranged on the bottom of transformer framework, top is provided with the projection preventing from coming off around winding loop line thereon, described projection is downward, the corresponding top being arranged on transformer framework of the first hanging wire salient point and described first hanging wire salient point mirror image each other.
The present invention by transformer main winding with (magnetic core), increase the method for the compensative winding on the shunt capacitance (building-out capacitor) that is parallel between switching tube D-S between main winding and secondary winding, inverse noise electric current compensative winding being flow through produced by building-out capacitor, resist common mode disturbances, when not increasing components and parts and cost, suppress common mode disturbances significantly; Increase by the first hanging wire salient point that the top and bottom of transformer framework homonymy coordinate and the second hanging wire salient point, the loop line of each winding hangs on stitch after described first hanging wire salient point and the second hanging wire salient point again, make the loop line of each winding within the scope of transformer framework fabric width to be straight line, to ensure that the coiling of each winding follow-up is smooth; Eliminate the insulating barrier playing cushioning effect between the first compensative winding, main winding, the second compensative winding, auxiliary winding and shield winding, be of value to and adopt mechanization coiling winding, first compensative winding, main winding, the second compensative winding, auxiliary winding and shield winding adopt unified wire diameter, same Automated winding equipment completes automatic winding, significantly promotes automation efficiency more than 50%.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is explained in further detail.
Fig. 1 is the coiling circuit diagram of embodiment
Fig. 2 is embodiment winding structure schematic diagram
Fig. 3 is embodiment transformer framework schematic diagram
Fig. 4 is the waveform of embodiment offset current and common mode current
Fig. 5 is before embodiment compensates and compensates the waveform of rear LISN common mode current
Embodiment
As shown in the circuit of Fig. 1, the invention provides by the main winding (Np) of transformer and ground (magnetic core), the method that increases compensative winding (Nc) between main winding (Np) and secondary winding (Ns) resists common mode disturbances.
As shown in Figure 2, the portable charger resisting common mode disturbances of the present invention, comprise the winding structure of transformer and transformer thereof, with existing technology type seemingly, described winding structure comprises main winding 10, auxiliary winding 20 (Ne), shield winding 30 (Ncc), secondary winding 40, first insulating barrier 70, second insulating barrier 80 and bobbin 90, difference is: also comprise the first compensative winding 50 arranged and between main winding 10 and magnetic core, and arrange and the second compensative winding 60 between main winding 10 and secondary winding 40, first compensative winding 50, second compensative winding 60 is parallel on the shunt capacitance (building-out capacitor) between switching tube D-S, described first compensative winding 50 and the second compensative winding 60 is made to flow through the inverse noise electric current produced by building-out capacitor, thus form offset current to the counteracting of common-mode interference current.
For convenience of description, Figure 3 shows that reference, transformer framework stitch is placed down, the side that stitch 94 is housed is the bottom of transformer framework, side on the other side is the top of transformer framework, transformer framework is overall similar with the transformer framework of prior art, difference is: preferably, the top and bottom of transformer framework homonymy additionally increase by the first hanging wire salient point 91 and the second hanging wire salient point 92 respectively, first hanging wire salient point 91 and leave enough locus and security regulations distance between the second hanging wire salient point 92 and frame body miscellaneous part, prevent short-circuit conditions from occurring.Further preferably, in an embodiment, described second hanging wire salient point 92 is arranged on side opposing with wiring column 93 bottom transformer framework, structure is preferably the rectangular shape of top with projection, described projection prevents the winding loop line hung thereon from coming off downwards, the corresponding top being arranged on transformer framework of described first hanging wire salient point 91 and described second hanging wire salient point 92 mirror image each other.The loop line of each winding is entangled on stitch after described first hanging wire salient point 91 and the second hanging wire salient point 92 again, making the loop line of each winding within the scope of skeleton fabric width is straight line, ensure that the coiling of each winding follow-up is smooth, eliminate the insulating barrier playing cushioning effect between each winding, reduce job step, save human and material resources, the cancellation of insulating barrier is of value to employing mechanization coiling winding, reduces the requirement to automatic winding number of devices.
Preferably, as shown in Figure 2, first compensative winding 50 close around whole around one deck on bobbin 90, it is in parallel with the building-out capacitor of paralleled power switches, main winding 10 the first compensative winding 50 close around whole around 3 layers, second compensative winding 60 on described main winding 10 close around whole around one deck, it is in parallel with the building-out capacitor of switch in parallel; The loop line of each winding is entangled on stitch successively after described first hanging wire salient point 91 and the second hanging wire salient point 92 are strained again, guarantee that each winding coiling is smooth, make it possible to not arrange insulating barrier between each winding, in the impregnable situation of guarantee transformer performance, reduce operation, save time, reduce the overall volume of transformer coiling bag, improve automaticity; Then winding 20 and shield winding 30 doubling will be assisted altogether around the second compensative winding 60 last layer, similarly, auxiliary winding 20 is entangled on stitch after described first hanging wire salient point 91 and the second hanging wire salient point 92 are strained with the loop line of shield winding 30 again, the first insulating barrier 70 is obtained at the outer smooth coated two-layer insulating tape of auxiliary winding 20 and shield winding 30, closely obtain secondary winding 40 around one deck the first insulating barrier 70 is outer, finally obtain the second insulating barrier 80 at the two-layer insulating tape of secondary winding 40 outer cladding.The coiling direction of main winding 10, auxiliary winding 20, shield winding 30 and secondary winding 40 and the number of plies all can according to close integers (can be one deck, two-layer or some layers) being no less than one deck around coiling such as the fabric widths of the performance of transformer and transformer framework body; The number of plies forming the insulating tape of the first insulating barrier 70 and the second insulating barrier 80 can be set to some layers as required.
Preferably, in the present embodiment, first compensative winding 50, main winding 10, second compensative winding 60, auxiliary winding 20 and shield winding 30 adopt unified wire diameter, meet around full one deck by the winding turns and distribution mode that calculate each winding of adjustment, owing to not establishing insulating barrier between wire diameter identical and the first compensative winding 50, main winding 10, second compensative winding 60, auxiliary winding 20 and shield winding 30, same Automated winding equipment completes automatic winding.
LISN (LineImpedanceStabilizationNetwork) i.e. line impedance stabilization net work, LISN is an important auxiliary equipment in electric power system in electromagnetic compatibility test, it can isolate electrical network interference, provides stable Impedance measurement, and plays the effect of filtering.The present embodiment adopts the method test of LISN, and as shown in Figure 4, A is the waveform of described offset current, and B is the waveform of described common mode current, as shown in Figure 5, C is the waveform of LISN ground common mode current before compensating, D is for compensating rear LISN ground common mode current waveform, can obviously be found out by Fig. 4 and Fig. 5: the ripple spike outstanding behaviours of offset current described in A is in positive half period, the ripple spike outstanding behaviours of common mode current described in B is in negative half-cycle, A, when B two kinds of ripples occur in same frequency range, then to cancel out each other electric wave ripple, then produce the LISN ground common mode current waveform after D compensation, the Vpp value of its ripple be significantly less than C compensate before the ripple Vpp value of LISN ground common mode current, can obviously draw the resistance of common-mode noise respond well from measured data (ripple).
Claims (9)
1. resist the circuit of the transformer coiling of common mode disturbances for one kind, it is characterized in that: comprise main winding, secondary winding, shield winding, auxiliary winding, magnetic core, switching tube, between the main winding and magnetic core of transformer, the first compensative winding is set, between main winding and secondary winding, arrange the second compensative winding, the first compensative winding and the second compensative winding are parallel to jointly to be tasted on electric capacity with the benefit of paralleled power switches.
2. resist the winding structure of transformer of common mode disturbances for one kind, it is characterized in that: comprise main winding (10), auxiliary winding (20), shield winding (30), secondary winding (40), first insulating barrier (70), second insulating barrier (80), bobbin (90), also be included in the first compensative winding (50) arranged between the main winding (10) of transformer and magnetic core and the second compensative winding (60) arranged between main winding (10) and secondary winding (40), first compensative winding (50) and the second compensative winding (60) are parallel to jointly to be tasted on electric capacity with the benefit of paralleled power switches.
3. the winding structure of transformer of opposing common mode disturbances as claimed in claim 2, it is characterized in that: the first compensative winding (50) is close around the integer layer with at least one deck on bobbin (90), main winding (10) is at the first compensative winding (50) close integer layer around to few one deck outward, the close integer layer around described main winding (10) at least one deck outward of second compensative winding (60), auxiliary winding (20) is close around one deck or auxiliary winding (20) outward around the second compensative winding (60) altogether with shield winding (30) doubling, shield winding (30) is sequentially set in the second compensative winding (60) outward from-inner-to-outer, then the first insulating barrier (70) is obtained at its outer smooth coated some layers of insulating tapes, secondary winding (40) is at the first insulating barrier (70) close integer layer around to few one deck outward, the second insulating barrier (80) is obtained at the exhausted some layers of edge adhesive tape of secondary winding (40) outer cladding.
4. the winding structure of transformer of opposing common mode disturbances as claimed in claim 3, is characterized in that: described main winding (10), auxiliary winding (20), shield winding (30), the first compensative winding (50) and the second compensative winding (60) adopt identical wire diameter.
5. resist the portable charger of common mode disturbances for one kind, comprise transformer and winding structure thereof, it is characterized in that: winding structure of transformer comprises main winding (10), auxiliary winding (20), shield winding (30), secondary winding (40), first insulating barrier (70), second insulating barrier (80), bobbin (90), also be included in the first compensative winding (50) arranged between the main winding (10) of transformer and magnetic core and the second compensative winding (60) arranged between main winding (10) and secondary winding (40), first compensative winding (50) and the second compensative winding (60) are parallel to jointly to be tasted on electric capacity with the benefit of paralleled power switches.
6. the portable charger of opposing common mode disturbances as claimed in claim 5, it is characterized in that: the first compensative winding (50) is close around the integer layer with at least one deck on bobbin (90), first compensative winding (50) is close around the integer layer with at least one deck on bobbin (90), main winding (10) is at the first compensative winding (50) close integer layer around to few one deck outward, the close integer layer around described main winding (10) at least one deck outward of second compensative winding (60), auxiliary winding (20) is close around one deck or auxiliary winding (20) outward around the second compensative winding (60) altogether with shield winding (30) doubling, shield winding (30) is sequentially set in the second compensative winding (60) outward from-inner-to-outer, then the first insulating barrier (70) is obtained at its outer smooth coated some layers of insulating tapes, secondary winding (40) is at the first insulating barrier (70) close integer layer around to few one deck outward, the second insulating barrier (80) is obtained at the exhausted some layers of edge adhesive tape of secondary winding (40) outer cladding.
7. the portable charger of opposing common mode disturbances as claimed in claim 6, is characterized in that: described main winding (10), auxiliary winding (20), shield winding (30), the first compensative winding (50) and the second compensative winding (60) adopt identical wire diameter.
8. the portable charger of the opposing common mode disturbances as described in any one of claim 2 ~ 7, it is characterized in that: the top of transformer framework homonymy and bottom correspondence are provided with the first hanging wire salient point and the second hanging wire salient point that can hang up for winding loop line, and winding loop line is entangled on stitch after pulling into straight line respectively through described first hanging wire salient point and the second hanging wire salient point again.
9. the portable charger of the opposing common mode disturbances as described in claim 2 ~ 8, it is characterized in that: described second hanging wire salient point is cuboid or nearly rectangular shape, be arranged on the bottom of transformer framework, top is provided with the projection preventing from coming off around winding loop line thereon, described projection is downward, the corresponding top being arranged on transformer framework of the first hanging wire salient point and described first hanging wire salient point mirror image each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510761408.5A CN105261461B (en) | 2015-11-10 | 2015-11-10 | Transformer winding circuit and structure capable of resisting common-mode interference and portable charger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510761408.5A CN105261461B (en) | 2015-11-10 | 2015-11-10 | Transformer winding circuit and structure capable of resisting common-mode interference and portable charger |
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| CN105261461A true CN105261461A (en) | 2016-01-20 |
| CN105261461B CN105261461B (en) | 2017-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986918A (en) * | 2020-08-24 | 2020-11-24 | 西南交通大学青岛轨道交通研究院 | Electromagnetic coil winding method |
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| CN2107704U (en) * | 1991-12-07 | 1992-06-17 | 沈阳市节能变压器厂 | Electric capacity compensation transformer |
| SK140199A3 (en) * | 1999-10-08 | 2001-06-11 | Ladislav Grno | Circuit for the virtual isolation of power supply of the voltage and current circuit at the bulk testing of electric supply meters |
| CN201298439Y (en) * | 2008-09-09 | 2009-08-26 | 詹云珍 | Electric furnace transformer with capacitance compensation winding |
| CN102789878A (en) * | 2012-08-28 | 2012-11-21 | 江苏索尔光电科技有限公司 | Transformer for switching mode power supply |
| CN204304786U (en) * | 2014-12-09 | 2015-04-29 | 成都创客之家科技有限公司 | A kind of switch power supply line structure |
| CN204668128U (en) * | 2015-06-04 | 2015-09-23 | 东莞市奥海电源科技有限公司 | The winding structure of portable charger and transformer thereof |
| CN205159057U (en) * | 2015-11-10 | 2016-04-13 | 东莞市奥海电源科技有限公司 | Resist common mode interference's transformer wire winding structure and portable battery charger |
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2015
- 2015-11-10 CN CN201510761408.5A patent/CN105261461B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2107704U (en) * | 1991-12-07 | 1992-06-17 | 沈阳市节能变压器厂 | Electric capacity compensation transformer |
| SK140199A3 (en) * | 1999-10-08 | 2001-06-11 | Ladislav Grno | Circuit for the virtual isolation of power supply of the voltage and current circuit at the bulk testing of electric supply meters |
| CN201298439Y (en) * | 2008-09-09 | 2009-08-26 | 詹云珍 | Electric furnace transformer with capacitance compensation winding |
| CN102789878A (en) * | 2012-08-28 | 2012-11-21 | 江苏索尔光电科技有限公司 | Transformer for switching mode power supply |
| CN204304786U (en) * | 2014-12-09 | 2015-04-29 | 成都创客之家科技有限公司 | A kind of switch power supply line structure |
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| CN205159057U (en) * | 2015-11-10 | 2016-04-13 | 东莞市奥海电源科技有限公司 | Resist common mode interference's transformer wire winding structure and portable battery charger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986918A (en) * | 2020-08-24 | 2020-11-24 | 西南交通大学青岛轨道交通研究院 | Electromagnetic coil winding method |
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Effective date of registration: 20170317 Address after: 343900 Suichuan Industrial Park, Jiangxi, Ji'an Applicant after: Ji'an Jiangxi Technology Co., Ltd. Address before: 523000 Guangdong city of Dongguan province Tangxia Zhenlong town B Jiao Tong Road No. 6 building A Applicant before: Dongguan City Ao Hai Power Technology Co., Ltd. |
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