CN201348924Y - Planar transformer winding - Google Patents
Planar transformer winding Download PDFInfo
- Publication number
- CN201348924Y CN201348924Y CNU2009201298741U CN200920129874U CN201348924Y CN 201348924 Y CN201348924 Y CN 201348924Y CN U2009201298741 U CNU2009201298741 U CN U2009201298741U CN 200920129874 U CN200920129874 U CN 200920129874U CN 201348924 Y CN201348924 Y CN 201348924Y
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Abstract
The utility model provides a planar transformer winding, which comprises two or more conducting metal sheets; each conducting metal sheet adopts one turn or more turns of coils formed by adopting the mechanical method, the linear cutting method or the laser cutting method for spiral segmentation, each coil comprises a first connection end and a second connection end, the adjacent two coils are overlapped, the corresponding connection ends of the adjacent two coils are electrically connected together, and the surface of each coil except the connection surface of the first connection end and the second connection end is covered by insulating materials. The planar transformer winding has the advantages of simple structure, convenient implementation, easy processing, low cost, good performance, beautiful appearance and effects of reducing the difficulty of the production process of a planar transformer, reducing current path and leading the direct current resistance of the winding to be smaller. The winding formed according to the utility model can also be used for a planar inductor.
Description
[technical field]
The present utility model patent relates to flat surface transformer, the winding of the flat surface transformer of especially a kind of handling ease, with low cost, functional, good looking appearance.
[background technology]
In existing flat surface transformer technology, the mode that forms winding has various ways, with more have two kinds, a kind of is to use copper sheet, after its surface is covered with dielectric film, put together the multi-disc copper sheet is overlapping, the scope outside welding that covers from every layer of copper sheet initial and end end leading-out terminal to magnetic core, thus the copper sheet of upper and lower layer is together in series and forms winding.Another is to adopt two-sided or multi-layer PCB, and the copper foil circuit on the PCB is as winding, and it adopts conventional PCB etch process and multi-layer sheet technology to produce, and the thickness of general Copper Foil is all more than 2OZ.Every layer of Copper Foil can be designed as a circle or multiturn, and it is the part of winding, beats via hole on the initial and end end of every layer of Copper Foil winding, behind the hole metallization, just upper and lower layer coupled together, and forms complete winding.In order to satisfy the requirement of the transformer number of turn and current strength, also use usually a plurality of PCB stacked after, externally weld, form the series and parallel relation on electric, thereby the purpose that realizes increasing umber of turn or improve overcurrent capability.
In above-mentioned first kind of winding configuration, every layer of copper sheet can only form a circle at most, when the number of turn of winding more for a long time, need the terminal of welding just many, both taken the outer peripheral big quantity space of magnetic core, profile is not attractive in appearance, also make technology become complicated, simultaneously, it is elongated to make winding flow through path of current, and copper loss strengthens, therefore, this winding configuration is not suitable for the more winding of the number of turn, and it is less mainly to be used in the number of turn, the situation that electric current is bigger.
Second kind of winding configuration adopted very ripe PCB technology, is particularly suitable for the more winding of the number of turn, and its consistency of product is better.Its shortcoming is, production process is longer, thereby cost is higher, when particularly adopting multi-layer PCB, cost increases considerably, simultaneously, because copper thickness is limited, the reason that sectional area is little, the ability of its overcurrent a little less than, so it is more that this winding configuration mainly is used in umber of turn, the situation that electric current is less.
[utility model content]
Technical problem to be solved in the utility model provides a kind of handling ease, with low cost, functional, the flat surface transformer winding that do not increase winding profile area.
For solving the problems of the technologies described above, the utility model provides a kind of flat surface transformer winding, comprises two or two above conductive metal sheets; It is characterized in that: every conductive metal sheet is and adopts machinery, line cutting or laser cutting method, a circle or the coil more than the circle of cutting apart formation according to spiral form, each coil comprises first link and second link, a joint face is arranged on each link, surface the joint face of each coil on first link and second link is covered with insulating material, adjacent two coils are overlapping up and down, and the corresponding link of adjacent two coils is electrically connected by joint face.
All can form multiturn coil (the concrete number of turn can be selected as required) on the every conductive metal sheet of the utility model flat surface transformer winding, make making winding process become more or less freely like this, and can do the profile of winding smaller.The utility model adopts conductive metal sheet (for example copper sheet) as winding coil, can satisfy the requirement of big electric current, adopts spiral to cut apart form, every copper sheet can be divided into two circles or multiturn as required.Insulation processing is carried out on conductive metal sheet surface the joint face on first link and second link.With the overlapping placement of a plurality of sheet metals, two links and the pairing link of adjacent metal sheet of each sheet metal couple together with welding method, have realized the electric connection between a plurality of conductive metal sheets, reach the number of turn that needs.The main distinction of the utility model and existing flat surface transformer winding is, the first, adopt the spiral dividing method that every copper sheet is divided into two circles even more than two circles, every layer of copper sheet of conventional method has only a circle relatively, the winding of the same number of turn needs the stacked copper sheet number of plies to reduce, and needs the number of terminals of welding just to reduce; The second, the tie point between the link of adjacent two coils does not need to be drawn out to the magnetic core outside between two conductive metal sheets, does not take the outer peripheral space of magnetic core.According to the winding that the utility model manufactures and designs, can realize the purpose of big electric current, multiturn number, good looking appearance.
The spiral dividing method is exactly with every conductive metal sheet its width of number of turn mean allocation as required, cut apart along the hand of spiral then, the centre is reserved certain clearance and is isolated as turn-to-turn, and general gap is got 0.2 millimeter with regard to passable (if the turn-to-turn voltage ratio is bigger, can increase the gap).For example, if the width of conductive metal sheet is 4 millimeters, every conductive metal sheet designs 2 circles, the width of so every circle conductive metal sheet is exactly (4-0.2)/2, promptly 1.9 millimeters, if every conductive metal sheet designs 3 circles, the width of so every circle conductive metal sheet is exactly (4-0.2-0.2)/3, promptly 1.2 millimeters, by that analogy.As required, the direction cut apart of spiral can be clockwise or counter-clockwise.
The mode that the corresponding link of adjacent two coils electrically connects can be series connection.
The mode that the corresponding link of adjacent two coils electrically connects is for to weld at the joint face place.
A kind of concrete form of the present utility model is: the number of turn of coil is a circle, the number of coil is three, and second link of second link of first coil and the electric connection of first link of second coil, second coil and second link of the 3rd coil electrically connect.
Another kind of concrete form of the present utility model is: the number of turn of coil is two circles, and the number of coil is two, and second link of first coil and second link of second coil electrically connect.
In the utility model, the number of turn of coil can be for a circle or more than the circle, the number of coil can be two or more, electrically connects between the corresponding link of link that the connected mode between the adjacent windings is coil and next adjacent coil.
The shape of coil can be selected as required, can be multiple shape such as circular, square.
The manufacturing process of the utility model flat surface transformer winding can be:
The first step according to shape, window area, umber of turn, the size of current of flat surface transformer magnetic core, is determined shape, width, thickness, the number of turn of every layer of conductive metal sheet.If umber of turn is less, every layer of conductive metal sheet just is designed to a circle, if the number of turn is many, just according to the spiral split plot design, every layer of conductive metal sheet is designed to multiturn;
Second step, adopt methods such as machinery, line cutting or laser cutting, the profile of processing conductive metal sheet if every layer of conductive metal sheet has multiturn, just carries out spiral to cut apart;
The 3rd step, the joint face that welds except that needs are overlapping, conductive metal sheet surface other parts are carried out insulation processing, the method for insulation processing can be a dip-coating insulation coating, solidifies the back and forms insulating barrier, or adopt the method for coated dielectric film;
The 4th step, use overlapping welding method, the corresponding link of adjacent two layers conductive metal sheet is welded the formation winding.
In order further to increase the area of section of umber of turn or increase conductive metal sheet, improve the overcurrent capability of winding, the winding of having finished above step can also be carried out connection in series-parallel again.
The beneficial effects of the utility model are: simple in structure, it is convenient to implement, and makes the operation easier of flat surface transformer manufacturing process; Reduced electric current road warp, made the D.C. resistance of winding littler; Handling ease, better, the winding good looking appearance of with low cost, performance.
[description of drawings]
Below by embodiment also in conjunction with the accompanying drawings, the utility model is described in further detail:
Fig. 1 is the schematic diagram of first coil 1 in a kind of embodiment of the utility model;
Fig. 2 is the schematic diagram of second coil 2 that is connected with first coil 1 in a kind of embodiment of the utility model;
Fig. 3 is the schematic perspective view before first coil 1 shown in Figure 1 and second coil 2 shown in Figure 2 do not weld;
Fig. 4 is the schematic diagram that first coil 1 among Fig. 3 and second coil 2 weld together;
Fig. 5 is first coil 1 shown in Figure 1 and second coil 2 a shown in Figure 2 partial schematic sectional view before not welding, dissect direction and be first coil 1 and shown in the thickness direction of second coil 2;
Fig. 6 is the perspective exploded view of the another kind of embodiment of the utility model.
[embodiment]
Embodiment one
Fig. 1-5 shows a kind of embodiment of the present utility model.
This flat surface transformer winding comprises first coil 1 and second coil 2, first coil 1 and second coil 2 all are respectively on the plane of a copper sheet, adopt method spirals such as machinery, line cutting or laser cutting to cut apart 2 circle coils of formation, coil shape is square.
As depicted in figs. 1 and 2, the two second link 3 of first coil 1 and second coil 2 is the most inboard starting point of coil, two second links 3 weld together the series connection that realizes between first coil 1 and second coil 2, the two first link 4 of first coil 1 and second coil 2 is the outermost starting points of coil, as the external binding post of this flat surface transformer winding, first coil 1 and the surface-coated of second coil 2 except that joint face 40 have insulation paint film 30 (see figure 5)s; The two the direction that detours of first coil 1 and second coil 2 adapts, and first coil 1 inwardly detours from outer starting point in the direction of the clock, and second coil 2 is by counterclockwise inwardly detouring from outer starting point; In conjunction with Fig. 5, during welding, the two second link 3 of first coil 1 and second coil 2 is overlapped, and joint face 40 positions of two second links 3 are corresponding, and two overlapping joint faces 40 are welded together.Like this, no matter electric current is that second link 4 from first coil 1 flows into, flows out from second link 4 of second coil 2, or from second link, 4 inflows of second coil 2, from second link, 4 outflows of first coil 1, first coil 1 all is consistent with the magnetic direction that second coil 2 is produced.
Weld together a winding that has just formed flat surface transformer with first coil 1 and second coil are overlapping about in the of 2, the elementary winding and the secondary winding of flat surface transformer can adopt such winding, and two such windings equipped corresponding magnetic core that stacks together has again just been obtained a flat surface transformer.Pad between first coil 1 and second coil 2 is positioned at the inside of winding, need not resemble and pad be guided to the outward flange of copper sheet even weld tabs need be set on the copper sheet outward flange in addition specially the prior art, this flat surface transformer of the present utility model fully will first coil 1 and second coil 2 between pad be located at outside the scope that the flat surface transformer magnetic core covers, correspondingly this flat surface transformer path of current is shorter, the D.C. resistance of winding is littler, and entire area is little, and profile is more attractive in appearance.
The manufacturing process of this flat surface transformer winding is:
1, adopts the spiral dividing method, on copper sheet, process as shown in Figure 1 and Figure 2 first coil 1 and second coil 2 respectively;
2, copper sheet is carried out insulating and handle (except the joint face 40), the method of insulation processing, the preferential dip-coating insulation coating of selecting, solidify the back and just form insulation paint film 30, before the dip-coating, want earlier the joint face 40 on first link 3 of first coil 1 and second coil 2 to be carried out insulation blocking, in order to avoid be coated with dielectric film;
3, as shown in Figure 3, the overlapping placement about in the of 2 with first coil 1 and second coil, two second links, the 3 part areas of first coil 1 and second coil 2 are overlapping, then two overlapping joint faces 40 welded, welding back winding has just been finished, and Fig. 4 is the winding after finishing.
Embodiment two
Fig. 6 shows the another kind of embodiment of the utility model.
This flat surface transformer winding comprises first coil 1, second coil 8 and tertiary coil 2, first coil 1, second coil 8 and tertiary coil 2 all are respectively on the plane of a copper sheet, adopt method spirals such as machinery, line cutting or laser cutting to cut apart 1 circle coil of formation.Coil shape is circular.First link of three coils is that 4, the second links are 3, and except that joint face, the surface-coated of coil has insulating varnish.
First coil 1, second coil 8 and tertiary coil 2 overlap up and down successively; Second link 3 of first coil 1 and first link 4 of second coil 8 link together, second link 3 of second coil 8 links together with second link 3 of tertiary coil 2, thereby realize the series connection between first coil 1, second coil 8 and the tertiary coil 2, the two first link 4 of first coil 1 and tertiary coil 2 is as the external binding post of this flat surface transformer winding.
During concrete enforcement, parameters such as gap between the number of turn of each coil, the width of every circle, thickness, the different circle can be set as required, a plurality of coils of having finished above process can also be carried out again the series and parallel combination, so that satisfy more multiturn number, the requirement of the flat surface transformer of bigger electric current.The shape of coil also can be selected according to the actual conditions of environment for use, can be circular, square, ellipse etc., even other special-shaped shape.
Winding according to the present utility model patent forms also can be used for planar inductor.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (7)
1, a kind of flat surface transformer winding comprises two or two above conductive metal sheets; It is characterized in that: every conductive metal sheet is and adopts machinery, line cutting or laser cutting method, a circle or the coil more than the circle of cutting apart formation according to spiral form, each described coil comprises first link and second link, a joint face is arranged on each link, surface the joint face of each described coil on described first link and second link is covered with insulating material, adjacent two described coils are overlapping up and down, and the corresponding link of adjacent two described coils is electrically connected by joint face.
2, flat surface transformer winding according to claim 1 is characterized in that: the mode that the corresponding link of adjacent two described coils electrically connects is series connection.
3, flat surface transformer winding according to claim 2 is characterized in that: the mode that the corresponding link of adjacent two described coils electrically connects is for to weld at the joint face place.
4, flat surface transformer winding according to claim 2, it is characterized in that: the number of turn of described coil is a circle, the number of described coil is three, and second link of second link of first described coil and the electric connection of first link of second described coil, second described coil and second link of the 3rd described coil electrically connect.
5, flat surface transformer winding according to claim 2 is characterized in that: the number of turn of described coil is two circles, and the number of described coil is two, and second link of first described coil and second link of second described coil electrically connect.
6, flat surface transformer winding according to claim 2, it is characterized in that: the number of turn of described coil is a circle or more than the circle, the number of described coil is two or more, electrically connects between the corresponding link of link that the connected mode between the adjacent described coil is described coil and next adjacent coil.
7, according to claim 1,2,3,4,5 or 6 described flat surface transformer windings, it is characterized in that: the shape of described coil is circular, square or other shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201298741U CN201348924Y (en) | 2009-02-10 | 2009-02-10 | Planar transformer winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201298741U CN201348924Y (en) | 2009-02-10 | 2009-02-10 | Planar transformer winding |
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| CN201348924Y true CN201348924Y (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201298741U Expired - Lifetime CN201348924Y (en) | 2009-02-10 | 2009-02-10 | Planar transformer winding |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968515A (en) * | 2010-11-03 | 2011-02-09 | 天津市特变电工变压器有限公司 | Fast detection device of transformer core loss and turns of coils and detection method thereof |
| CN102194565A (en) * | 2010-03-11 | 2011-09-21 | 康舒科技股份有限公司 | Winding structure of transformer |
| CN104425110A (en) * | 2013-09-05 | 2015-03-18 | 重庆美桀电子科技有限公司 | Coil structure and production method thereof |
| CN105405609A (en) * | 2015-12-16 | 2016-03-16 | 东莞市昱懋纳米科技有限公司 | Filter inductor |
| CN108987094A (en) * | 2018-06-20 | 2018-12-11 | 深圳市信维通信股份有限公司 | The production method of Wireless charging coil |
| CN109545538A (en) * | 2018-11-30 | 2019-03-29 | 北京中石伟业科技股份有限公司 | A kind of planar coil and preparation method thereof, wireless charging system |
| CN109994305A (en) * | 2019-03-27 | 2019-07-09 | 武汉合康亿盛电气连接系统有限公司 | A kind of stacked inductor |
| CN112086284A (en) * | 2020-09-04 | 2020-12-15 | 伍尔特电子(重庆)有限公司 | Transformer rubber-coated metal winding and rubber coating method thereof |
| CN112530680A (en) * | 2019-09-19 | 2021-03-19 | 台达电子企业管理（上海）有限公司 | Magnetic element, manufacturing method of magnetic element and power module |
| US11133750B2 (en) | 2018-11-02 | 2021-09-28 | Delta Electronics (Shanghai) Co., Ltd. | Power module |
| CN113555196A (en) * | 2018-11-02 | 2021-10-26 | 台达电子企业管理（上海）有限公司 | Transformer module and power module |
| US11450480B2 (en) | 2018-11-02 | 2022-09-20 | Delta Electronics (Shanghai) Co., Ltd. | Transformer module and power module |
| US11664157B2 (en) | 2018-11-02 | 2023-05-30 | Delta Electronics (Shanghai) Co., Ltd. | Magnetic element and method for manufacturing same |
-
2009
- 2009-02-10 CN CNU2009201298741U patent/CN201348924Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102194565A (en) * | 2010-03-11 | 2011-09-21 | 康舒科技股份有限公司 | Winding structure of transformer |
| CN101968515B (en) * | 2010-11-03 | 2014-05-14 | 天津市特变电工变压器有限公司 | Fast detection device of transformer core loss and turns of coils and detection method thereof |
| CN101968515A (en) * | 2010-11-03 | 2011-02-09 | 天津市特变电工变压器有限公司 | Fast detection device of transformer core loss and turns of coils and detection method thereof |
| CN104425110A (en) * | 2013-09-05 | 2015-03-18 | 重庆美桀电子科技有限公司 | Coil structure and production method thereof |
| CN105405609A (en) * | 2015-12-16 | 2016-03-16 | 东莞市昱懋纳米科技有限公司 | Filter inductor |
| CN108987094A (en) * | 2018-06-20 | 2018-12-11 | 深圳市信维通信股份有限公司 | The production method of Wireless charging coil |
| US11133750B2 (en) | 2018-11-02 | 2021-09-28 | Delta Electronics (Shanghai) Co., Ltd. | Power module |
| US11664157B2 (en) | 2018-11-02 | 2023-05-30 | Delta Electronics (Shanghai) Co., Ltd. | Magnetic element and method for manufacturing same |
| US11450480B2 (en) | 2018-11-02 | 2022-09-20 | Delta Electronics (Shanghai) Co., Ltd. | Transformer module and power module |
| CN113555196A (en) * | 2018-11-02 | 2021-10-26 | 台达电子企业管理（上海）有限公司 | Transformer module and power module |
| CN109545538A (en) * | 2018-11-30 | 2019-03-29 | 北京中石伟业科技股份有限公司 | A kind of planar coil and preparation method thereof, wireless charging system |
| CN109994305A (en) * | 2019-03-27 | 2019-07-09 | 武汉合康亿盛电气连接系统有限公司 | A kind of stacked inductor |
| CN112530680A (en) * | 2019-09-19 | 2021-03-19 | 台达电子企业管理（上海）有限公司 | Magnetic element, manufacturing method of magnetic element and power module |
| CN112530680B (en) * | 2019-09-19 | 2022-04-19 | 台达电子企业管理（上海）有限公司 | Magnetic element, manufacturing method of magnetic element and power module |
| CN112086284A (en) * | 2020-09-04 | 2020-12-15 | 伍尔特电子(重庆)有限公司 | Transformer rubber-coated metal winding and rubber coating method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA ZHENHUA (GROUP) XINYUN ELECTRONIC COMP. + DE Free format text: FORMER OWNER: TIAN XIANPING Effective date: 20120118 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400047 SHAPINGBA, CHONGQING TO: 550018 GUIYANG, GUIZHOU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120118 Address after: 550018 Guizhou province Guiyang city Wudang District North New Road No. 232 Patentee after: China Zhenhua (Group) Xinyun Electronic Component Co., Ltd. Address before: 400047 Chongqing city Shapingba District tianxingqiao sun light flat 69 13-11-3 Patentee before: Tian Xianping |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091118 |