CN201478089U - High-power planar transformer - Google Patents
High-power planar transformer Download PDFInfo
- Publication number
- CN201478089U CN201478089U CN2009201346590U CN200920134659U CN201478089U CN 201478089 U CN201478089 U CN 201478089U CN 2009201346590 U CN2009201346590 U CN 2009201346590U CN 200920134659 U CN200920134659 U CN 200920134659U CN 201478089 U CN201478089 U CN 201478089U
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- Prior art keywords
- pcb board
- winding
- transformer
- magnetic core
- copper foil
- 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
- 238000004804 winding Methods 0.000 claims abstract description 50
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011889 copper foil Substances 0.000 claims abstract description 22
- 238000002955 isolation Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 229920002799 BoPET Polymers 0.000 claims description 6
- 239000005041 Mylar™ Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 3
- 150000003071 polychlorinated biphenyls Chemical class 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
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- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The utility model discloses a high-power planar transformer. The high-power planar transformer comprises a magnetic core, a primary winding and a secondary winding, wherein the primary winding and the secondary winding comprise a flat copper foil located on at least two PCBs and surrounding the magnet core; and the flat copper foil is in axial symmetry. Accordingly, the flat copper foil printed on the plurality of PCBs forms the primary winding and the secondary winding to meet the requirement of extra-high current and ultrahigh power. Due to axial symmetry of the flat copper foil, the high-power planar transformer can ensure the accuracy and the consistence of the windings from the process and the structure as well as the symmetry between the windings during assembly. In addition, the high-power planar transformer can simplify the manufacture process, and suits large-scale standardized production so as to lower the production cost.
Description
Technical field
The utility model relates to the transformer technology field, more particularly, relates to a kind of high-power flat transformer.
Background technology
Along with the hyundai electronics industrial expansion, various electronic products tend to miniaturization, lightweight, flattening day by day.This is just more and more higher to the requirement of Switching Power Supply.Transformer as the core devices of Switching Power Supply must be deacclimatized this development trend.Flat-plate transformer is exactly the transformer of a kind of novel high power density that produces under this background.
Existing flat-plate transformer has with the bending Copper Foil as former and deputy limit winding.Also useful PCB track is made winding, and the patent No. is that the Chinese patent of ZL 071721.5 discloses a kind of like this flat-plate transformer.Track on its usefulness printed substrate (PCB, Printed Circuit Board) or sheet copper sheet or the three layer insulation wire that is wrapped on the insulation board are done winding, form former and deputy limit winding with multi-layer PCB board.Adopt the transformer of this structure, though on through-current capability and power, promote to some extent than other flat-plate transformers.But it still has following shortcoming:
1, do winding with copper sheet or three layer insulation wire, be unsuitable for large-scale standardized production in technological operation, and be subjected to the restriction of this body structure of three layer insulation wire, the through-current capability under the transformer equal conditions still can be subjected to great restriction.
2, be subjected to the restriction of magnetic material monomer power capacity, this transformer still can't be applicable to the occasion of super high power.
3, its existing column installation method, though saved the space of a part of wiring board, its radiating condition is the same with traditional transformer, can not satisfy the heat radiation requirement of super high power occasion, thereby has limited the lifting of its power handling capability.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of high-power flat transformer, and it can satisfy the demand of especially big electric current super high power, and simple in structure, is beneficial to the production of large-scale standardized.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of high-power flat transformer is provided, comprise magnetic core and former and deputy limit winding, described former and deputy limit winding comprises the flat Copper Foil that is positioned at least two pcb boards and centers on described magnetic core, and described flat Copper Foil is the central shaft symmetry.
Like this, owing to adopt the flat Copper Foil that is printed on the polylith pcb board to form former and deputy limit winding, so can satisfy the requirement of especially big electric current, super high power; Because flat Copper Foil is the central shaft symmetry, thus can guarantee the accuracy and the consistency of winding from technology and structure, and the symmetry between winding when assembling, and simplified production technology, be suitable for large-scale standardized production to reduce production costs.
Description of drawings
Fig. 1 is the perspective view of the utility model one preferred embodiment;
Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of Fig. 1.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Please refer to Fig. 1 and Fig. 2, be a preferred embodiment of the present utility model, this high-power flat transformer, comprise magnetic core 1 and former and deputy limit winding, described former and deputy limit winding comprises the flat Copper Foil that is positioned at least two pcb boards and centers on described magnetic core 1, and described flat Copper Foil is the central shaft symmetry and is formed by described flat Copper Foil serial or parallel connection respectively.
Like this, owing to adopt the flat Copper Foil that is printed on the polylith pcb board to form former and deputy limit winding, so can satisfy the requirement of especially big electric current, super high power; Because flat Copper Foil is the central shaft symmetry, thus can guarantee the accuracy and the consistency of winding from technology and structure, and the symmetry between winding when assembling, and simplified production technology, be suitable for large-scale standardized production to reduce production costs.
Below above-mentioned each part is further described in detail respectively.
The stacked setting of pcb board in the vertical direction that the pcb board of described secondary winding is set and described former limit winding is set, and described former and deputy limit winding in the vertical direction is symmetrical respectively.Present embodiment realized like this, is positioned at the top layer pcb board 31 of top layer, the center P CB plate 32 that is positioned at the center, the bottom pcb board 33 that is positioned at bottom described secondary winding is set.Four middle level pcb boards 21 that symmetry is located at described center P CB plate 32 both sides are provided with described former limit winding.Wherein, the one side of top layer pcb board 31 and bottom pcb board 33 is printed with flat Copper Foil, and the two sides of two middle level pcb boards 21 of center P CB plate 32 and center P CB plate 32 both sides all is printed with flat Copper Foil.Like this, promptly realized described former and deputy limit winding in the vertical direction symmetry respectively.Should be appreciated that the difference symmetry that realizes described former and deputy limit winding in the vertical direction, also have a lot of other kinds modes.For example, can make the quantity of middle level pcb board 21 is that two, six, eight etc. and symmetry are positioned at described center P CB plate 32 both sides.Also can increase the quantity of the center P CB plate 32 that is positioned at the transformer center.The pcb board reversing of position that also can make the pcb board that described secondary winding is set and described former limit winding is set, or the like.Because the former and deputy limit winding in the vertical direction of present embodiment also adopts the symmetrical expression assembling, thereby make the coupling of transformer tightr, loss is lower, efficient is higher, can satisfy the need of work of super high power.
The middle part of above-mentioned each pcb board is provided with the jack that wears for described magnetic core 1, and edge, described flat Copper Foil medial and lateral need keep at a certain distance away to each pcb board edge.Be that described flat Copper Foil should guarantee symmetry, can satisfy the safe distance of former and deputy limit winding and the safety requirements of electric clearance again.
In the present embodiment, the two ends of above-mentioned each pcb board are equipped with wiring hole 6.By power line being welded on the mode of described wiring hole 6, can selecting the installation site of transformer neatly, thereby adapt to the safety and the heat radiation requirement of super high power operational environment.In the present embodiment, the wiring hole 6 of pcb board of described secondary winding and the two ends that wiring hole 6 that the pcb board of described former limit winding is set lays respectively at transformer are set.
In the present embodiment, between described each pcb board, be equipped with dielectric isolation layer 4 between described pcb board and the magnetic core 1.Described dielectric isolation layer 4 is that the high temperature resistant mylar closed assembly of 0.07-0.09 millimeter forms by at least one layer thickness, wherein, dielectric isolation layer between 1 of each winding and magnetic core and former and deputy limit winding has three layers of described high temperature resistant mylar, and the dielectric isolation layer between winding of the same name has the described high temperature resistant mylar of one deck.The insulation system that adopts this mode to be provided with has guaranteed the creepage distance of transformer and the safety requirements of electric clearance technically, has promoted the reliability of transformer greatly.Each dielectric isolation layer 4 middle parts equally also are provided with the jack that wears for described magnetic core 1.
In the present embodiment, described magnetic core 1 is formed in parallel by two groups of flat magnetic cores 11 of EE type.The quantity of the flat magnetic core 11 of EE type can also be one group or many groups.This flat structure not only can make the height of transformer reduce, but also the area/volume ratio of product is increased, thereby makes that the radiating effect of transformer is very good.And then can greatly improve the through-current capability of transformer.And, adopt parallel way, can come choose reasonable to organize the magnetic core parallel connection according to the power requirement of transformer more, can make the flat-plate transformer of super large power output with less magnetic core, the power capacity that had both increased transformer has also reduced the production difficulty of magnetic core simultaneously to satisfy the requirement of super high power.
In order further to strengthen the heat-sinking capability of transformer, to adapt to the needs of big electric current, high-power operational environment.The high-power flat transformer of present embodiment also comprises a heat dissipation base 5, and described heat dissipation base 5 peripheries extend some installation portions 51.Described heat dissipation base 5 can be fitted on the described magnetic core 1.In the present embodiment, described heat dissipation base 5 is to form its surfacing by the thick flat aluminium alloy plate machining of 2.5mm.After the magnetic core 1 usefulness high temperature heat-conducting glue bonding with itself and transformer, can be directly with transformer by installation portion 51 smooth being fixed on the device housings, further enlarge area of dissipation by described shell, to satisfy the heat radiation requirement of super high power product.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. a high-power flat transformer comprises magnetic core and former and deputy limit winding, it is characterized in that: described former and deputy limit winding comprises the flat Copper Foil that is positioned at least two pcb boards and centers on described magnetic core, and described flat Copper Foil is the central shaft symmetry.
2. high-power flat transformer as claimed in claim 1 is characterized in that: described former and deputy limit winding is formed by described flat Copper Foil serial or parallel connection respectively.
3. high-power flat transformer as claimed in claim 1 is characterized in that: the middle part of described pcb board is provided with the jack that wears for described magnetic core, and edge, described flat Copper Foil medial and lateral satisfies the safety requirements of electric clearance to the distance at pcb board edge.
4. high-power flat transformer as claimed in claim 1, it is characterized in that: the stacked setting of pcb board in the vertical direction that the pcb board of described secondary winding is set and described former limit winding is set, and described former and deputy limit winding in the vertical direction is symmetrical respectively.
5. high-power flat transformer as claimed in claim 4 is characterized in that: the pcb board that described secondary winding is set comprises the top layer pcb board that is positioned at top layer, the bottom pcb board that is positioned at bottom and the center P CB plate that is positioned at the center; The pcb board that described former limit winding is set comprises that symmetry is located at a plurality of middle levels pcb board of described center P CB plate both sides.
6. high-power flat transformer as claimed in claim 5 is characterized in that: between the described pcb board, be equipped with dielectric isolation layer between described pcb board and the magnetic core.
7. high-power flat transformer as claimed in claim 6, it is characterized in that: described dielectric isolation layer is that the high temperature resistant mylar closed assembly of 0.07-0.09 millimeter forms by at least one layer thickness, wherein, dielectric isolation layer between the winding of between winding and magnetic core and former and deputy limit has three layers of described high temperature resistant mylar, and the dielectric isolation layer between winding of the same name has the described high temperature resistant mylar of one deck.
8. high-power flat transformer as claimed in claim 1 is characterized in that: described magnetic core is formed in parallel by at least two group EE type magnetic cores.
9. as any described high-power flat transformer of claim 1 to 8, it is characterized in that: also comprise a heat dissipation base, described heat dissipation base is fitted on the described magnetic core.
10. high-power flat transformer as claimed in claim 9 is characterized in that: described heat dissipation base periphery extends some installation portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201346590U CN201478089U (en) | 2009-08-10 | 2009-08-10 | High-power planar transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201346590U CN201478089U (en) | 2009-08-10 | 2009-08-10 | High-power planar transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478089U true CN201478089U (en) | 2010-05-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201346590U Expired - Lifetime CN201478089U (en) | 2009-08-10 | 2009-08-10 | High-power planar transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201478089U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760564A (en) * | 2012-07-11 | 2012-10-31 | 合肥华耀电子工业有限公司 | Drive transformer for MOS (metal oxide semiconductor) transistor of power converter |
| CN103582391A (en) * | 2012-07-27 | 2014-02-12 | Tdk株式会社 | Power supply device |
| CN103839667A (en) * | 2012-11-23 | 2014-06-04 | Ge医疗系统环球技术有限公司 | Plane high-voltage transformer |
| CN105405624A (en) * | 2015-11-04 | 2016-03-16 | 中国船舶重工集团公司第七二三研究所 | Current transformer of printed circuit board |
| CN105469946A (en) * | 2015-12-24 | 2016-04-06 | 上海继胜磁性材料有限公司 | Mobile phone charger and PCB transformer thereof |
| CN105810406A (en) * | 2016-04-27 | 2016-07-27 | 华为技术有限公司 | Power magnetic component and power module |
| CN107808756A (en) * | 2017-11-09 | 2018-03-16 | 西安华为技术有限公司 | A kind of flat-plate transformer and switch power source adapter |
| CN104752044B (en) * | 2013-12-27 | 2018-03-27 | 上海辰竹仪表有限公司 | A kind of explosiveproof isolation transformer |
| CN107993812A (en) * | 2017-12-27 | 2018-05-04 | 河北正电器科技有限公司 | Flat surface transformer |
| CN111446066A (en) * | 2020-05-27 | 2020-07-24 | 东莞市鸿技电子有限公司 | A phase-shifted full-bridge circuit high-power high-frequency flat-panel transformer |
| CN111477428A (en) * | 2020-05-27 | 2020-07-31 | 东莞市鸿技电子有限公司 | High-power high-frequency transformer of phase-shifted full-bridge circuit |
-
2009
- 2009-08-10 CN CN2009201346590U patent/CN201478089U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760564A (en) * | 2012-07-11 | 2012-10-31 | 合肥华耀电子工业有限公司 | Drive transformer for MOS (metal oxide semiconductor) transistor of power converter |
| CN103582391A (en) * | 2012-07-27 | 2014-02-12 | Tdk株式会社 | Power supply device |
| CN103839667A (en) * | 2012-11-23 | 2014-06-04 | Ge医疗系统环球技术有限公司 | Plane high-voltage transformer |
| CN103839667B (en) * | 2012-11-23 | 2018-10-23 | Ge医疗系统环球技术有限公司 | A kind of planar high voltage transformer |
| CN104752044B (en) * | 2013-12-27 | 2018-03-27 | 上海辰竹仪表有限公司 | A kind of explosiveproof isolation transformer |
| CN105405624A (en) * | 2015-11-04 | 2016-03-16 | 中国船舶重工集团公司第七二三研究所 | Current transformer of printed circuit board |
| CN105469946A (en) * | 2015-12-24 | 2016-04-06 | 上海继胜磁性材料有限公司 | Mobile phone charger and PCB transformer thereof |
| CN105810406B (en) * | 2016-04-27 | 2018-10-12 | 华为技术有限公司 | A kind of power magnetic cell and power module |
| CN105810406A (en) * | 2016-04-27 | 2016-07-27 | 华为技术有限公司 | Power magnetic component and power module |
| CN107808756A (en) * | 2017-11-09 | 2018-03-16 | 西安华为技术有限公司 | A kind of flat-plate transformer and switch power source adapter |
| CN107808756B (en) * | 2017-11-09 | 2020-03-20 | 西安华为技术有限公司 | Flat transformer and switching power adapter |
| WO2019091353A1 (en) * | 2017-11-09 | 2019-05-16 | 华为技术有限公司 | Planar transformer and switching power adapter |
| US11551848B2 (en) | 2017-11-09 | 2023-01-10 | Huawei Digital Power Technologies Co., Ltd. | Planar transformer and switching power adapter |
| CN107993812A (en) * | 2017-12-27 | 2018-05-04 | 河北正电器科技有限公司 | Flat surface transformer |
| CN107993812B (en) * | 2017-12-27 | 2019-12-03 | 河北正一电器科技有限公司 | Flat surface transformer |
| CN111446066A (en) * | 2020-05-27 | 2020-07-24 | 东莞市鸿技电子有限公司 | A phase-shifted full-bridge circuit high-power high-frequency flat-panel transformer |
| CN111477428A (en) * | 2020-05-27 | 2020-07-31 | 东莞市鸿技电子有限公司 | High-power high-frequency transformer of phase-shifted full-bridge circuit |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |