CN104882260A - Planar transformer - Google Patents
Planar transformer Download PDFInfo
- Publication number
- CN104882260A CN104882260A CN201510252464.6A CN201510252464A CN104882260A CN 104882260 A CN104882260 A CN 104882260A CN 201510252464 A CN201510252464 A CN 201510252464A CN 104882260 A CN104882260 A CN 104882260A
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- China
- Prior art keywords
- magnetic core
- pcb board
- conductive
- flat surface
- pcbs
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Abstract
The invention provides a planar transformer. The planar transformer comprises an upper magnetic core, a lower magnetic core and a plurality of PCBs (Printed Circuit Board), wherein the plurality of PCBs are located between the upper magnetic core and the lower magnetic core, one surface of each PCB board is made as a conductive metal wire of a primary side coil, and the other surface is printed as a conductive metal wire of a secondary side coil; the primary side coil of each PCB board is provided with a magnetic core with an upward surface, the secondary side coil of each PCB board is provided with a magnetic core with a downward surface, the leading-out ends of the primary side coils and the leading-out ends of the secondary side coils are located at the two opposite sides of the PCBs, an insulating layer is arranged between two PCBs and the two opposite sides of each PCB are respectively provided with a conductive through hole for placing a welding pin; the leading-out ends of the primary side coils are connected with a conductive through hole in one sides of the PCBs, the leading-out ends of the secondary side coils are connected with conductive through holes in other sides of the PCBs, the conductive through holes at the same sides of the PCBs are connected through the welding pins, high thermally conductive and insulating foaming materials are filled between the upper magnetic core and the top PCB and between the lower magnetic core and the bottom PCB.
Description
Technical field
The present invention relates to transformer technology field, particularly relate to a kind of flat surface transformer.
Background technology
Transformer is by electromagnetic induction principle, with identical frequency, and a kind of static electrical equipment of voltage of transformation or electric current between two or more winding.Traditional coiling transformer, the iron core generally comprising the coil brace of isolation material, be wrapped in the coil on coil brace and be coated on outside coil.Along with power electronic equipment is constantly towards more small size, more high power density and more high efficiency future development, transformer, as one of key element in power electronic equipment, also trends towards Miniaturization Design, so flat surface transformer arises at the historic moment.
Traditional flat surface transformer roughly can be divided into two classes: a class forms with discrete parts are stacking.Typical structure is: be processed into special size and special shape with copper coin or Copper Foil, and the discrete elements then these with special shape is stacking according to certain requirement, and in order to form all windings of transformer, finally the heart adds a ferrite core wherein.The shortcoming of this kind of flat surface transformer is: cost is high, and complex manufacturing technology is not easily processed; And another kind of traditional flat surface transformer primary coil and secondary coil is printed on respectively one or more PAB (Printed Circuit Board, printed circuit board (PCB)) on plate, but its shortcoming be when primary coil and secondary coil a lot of time, the quantity of pcb board is comparatively large, causes flat surface transformer volume to increase.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of flat surface transformer, can reduce the usage quantity of pcb board.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of flat surface transformer, described flat surface transformer comprises magnetic core, lower magnetic core and polylith pcb board, described polylith pcb board is on described between magnetic core and described lower magnetic core, the one side of pcb board described in every block prints the conductive metal wire as primary coil, another side prints the conductive metal wire as secondary coil, and the primary coil of pcb board all faces described upper magnetic core described in every block, the secondary coil of pcb board described in every block all faces described lower magnetic core, exit and the exit of described secondary coil of described primary coil are positioned at the relative both sides of pcb board, between every two pieces of described pcb boards, insulating barrier is set, the relative both sides of pcb board described in each are respectively arranged with the conductive through hole for placing capillary, the exit of described primary coil connects the conductive through hole of described pcb board side, the exit of described secondary coil connects the described conductive through hole of described pcb board opposite side, described in each, the conductive through hole of pcb board phase the same side is connected by capillary, high heat conductive insulating foamed material is all filled with between described upper magnetic core and the described pcb board of the superiors and between described lower magnetic core and undermost described pcb board.
Preferably, copper sheet is accompanied between described high heat conductive insulating foamed material and described upper magnetic core.
Preferably, the periphery of described upper magnetic core and described lower magnetic core is coated with insulating tape.
The invention has the beneficial effects as follows: the situation being different from prior art, flat surface transformer of the present invention prints primary coil and secondary coil respectively at the tow sides of pcb board, secondary coil and the exit of primary coil are positioned at the relative both sides of pcb board, thus the usage quantity of pcb board can be reduced, the volume of flat surface transformer can be reduced, make flat surface transformer flattening more.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of flat surface transformer embodiment of the present invention.
Fig. 2 is the schematic front view of flat surface transformer embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See also Fig. 1 and Fig. 2.The flat surface transformer of the embodiment of the present invention comprises magnetic core 1, lower magnetic core 2 and polylith pcb board 3, polylith pcb board 3 is between upper magnetic core 1 and lower magnetic core 2, the one side of every block pcb board 3 prints the conductive metal wire as primary coil 31, another side prints the conductive metal wire as secondary coil 32, the magnetic core 1 and primary coil 31 of every block pcb board 3 all faces up, the secondary coil 32 of every block pcb board 3 all faces down magnetic core 2, exit and the exit of secondary coil 32 of primary coil 31 are positioned at the relative both sides of pcb board 3, between every two pieces of pcb boards, insulating barrier 4 is set, the relative both sides of each pcb board 3 are respectively arranged with the conductive through hole 33 for placing capillary, the conductive through hole 33 of exit connecting PCB board 3 side of primary coil 31, the conductive through hole 33 of exit connecting PCB board 3 opposite side of secondary coil 32, the conductive through hole 33 of each pcb board 3 phase the same side is connected by capillary 34, high heat conductive insulating foamed material 5 is all filled with between upper magnetic core 1 and the pcb board 3 of the superiors and between lower magnetic core 2 and undermost pcb board 3.
In the present embodiment, copper sheet 11 is accompanied between high heat conductive insulating foamed material 5 and upper magnetic core 1.The periphery of upper magnetic core 1 and lower magnetic core 2 is coated with insulating tape 6.Copper sheet 11 can improve heat dispersion and carry out good electromagnetic shielding.Insulating tape 6 can improve heat dispersion further.
Wherein, in the present embodiment, pcb board 3 is two pieces, because the two sides of every block pcb board prints primary coil and secondary coil respectively, use one piece of pcb board to print primary coil or secondary coil compared to prior art, the usage quantity of pcb board can be reduced, reduce manufacturing cost, make flat surface transformer flattening more, the volume of flat surface transformer can be reduced.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a flat surface transformer, it is characterized in that, described flat surface transformer comprises magnetic core, lower magnetic core and polylith pcb board, described polylith pcb board is on described between magnetic core and described lower magnetic core, the one side of pcb board described in every block prints the conductive metal wire as primary coil, another side prints the conductive metal wire as secondary coil, and the primary coil of pcb board all faces described upper magnetic core described in every block, the secondary coil of pcb board described in every block all faces described lower magnetic core, exit and the exit of described secondary coil of described primary coil are positioned at the relative both sides of pcb board, between every two pieces of described pcb boards, insulating barrier is set, the relative both sides of pcb board described in each are respectively arranged with the conductive through hole for placing capillary, the exit of described primary coil connects the conductive through hole of described pcb board side, the exit of described secondary coil connects the described conductive through hole of described pcb board opposite side, described in each, the conductive through hole of pcb board phase the same side is connected by capillary, high heat conductive insulating foamed material is all filled with between described upper magnetic core and the described pcb board of the superiors and between described lower magnetic core and undermost described pcb board.
2. flat surface transformer according to claim 1, is characterized in that, accompanies copper sheet between described high heat conductive insulating foamed material and described upper magnetic core.
3. flat surface transformer according to claim 1, is characterized in that, the periphery of described upper magnetic core and described lower magnetic core is coated with insulating tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252464.6A CN104882260A (en) | 2015-05-18 | 2015-05-18 | Planar transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252464.6A CN104882260A (en) | 2015-05-18 | 2015-05-18 | Planar transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104882260A true CN104882260A (en) | 2015-09-02 |
Family
ID=53949722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510252464.6A Pending CN104882260A (en) | 2015-05-18 | 2015-05-18 | Planar transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104882260A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328357A (en) * | 2016-11-03 | 2017-01-11 | 四川领创宝岩电子科技有限公司 | Planar transformer based on double-sided printed circuit boards |
| CN107799280A (en) * | 2016-08-30 | 2018-03-13 | 杨杰 | A kind of applied metal applies the high-temperature plane transformer for connecing ceramic substrate |
| CN108335879A (en) * | 2018-04-19 | 2018-07-27 | 优尔特电子（深圳）有限公司 | A kind of flat surface transformer, electronic equipment and flat surface transformer production method |
| WO2022133662A1 (en) * | 2020-12-21 | 2022-06-30 | 深圳顺络电子股份有限公司 | Planar wire-wound transformer and manufacturing method therefor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2250383A (en) * | 1990-10-05 | 1992-06-03 | Nippon Cmk Kk | Coil comprising multi layer printed circuit boards |
| JPH06275439A (en) * | 1993-03-23 | 1994-09-30 | Yokogawa Electric Corp | Printed-coil transformer |
| CN202662442U (en) * | 2012-06-08 | 2013-01-09 | 深圳市康普锐电子有限公司 | Planar high-frequency transformer based on single-deck PCB (Printed Circuit Board) |
| CN103366935A (en) * | 2013-07-30 | 2013-10-23 | 华为技术有限公司 | Flat transformer structure |
| CN103903835A (en) * | 2014-04-16 | 2014-07-02 | 东莞铭普光磁股份有限公司 | Transformer |
| CN204577235U (en) * | 2015-05-18 | 2015-08-19 | 成都锐思灵科技有限公司 | Flat surface transformer |
-
2015
- 2015-05-18 CN CN201510252464.6A patent/CN104882260A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2250383A (en) * | 1990-10-05 | 1992-06-03 | Nippon Cmk Kk | Coil comprising multi layer printed circuit boards |
| JPH06275439A (en) * | 1993-03-23 | 1994-09-30 | Yokogawa Electric Corp | Printed-coil transformer |
| CN202662442U (en) * | 2012-06-08 | 2013-01-09 | 深圳市康普锐电子有限公司 | Planar high-frequency transformer based on single-deck PCB (Printed Circuit Board) |
| CN103366935A (en) * | 2013-07-30 | 2013-10-23 | 华为技术有限公司 | Flat transformer structure |
| CN103903835A (en) * | 2014-04-16 | 2014-07-02 | 东莞铭普光磁股份有限公司 | Transformer |
| CN204577235U (en) * | 2015-05-18 | 2015-08-19 | 成都锐思灵科技有限公司 | Flat surface transformer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107799280A (en) * | 2016-08-30 | 2018-03-13 | 杨杰 | A kind of applied metal applies the high-temperature plane transformer for connecing ceramic substrate |
| CN106328357A (en) * | 2016-11-03 | 2017-01-11 | 四川领创宝岩电子科技有限公司 | Planar transformer based on double-sided printed circuit boards |
| CN106328357B (en) * | 2016-11-03 | 2017-10-20 | 四川领创宝岩电子科技有限公司 | A kind of flat surface transformer based on double-sided printed-circuit board |
| CN108335879A (en) * | 2018-04-19 | 2018-07-27 | 优尔特电子（深圳）有限公司 | A kind of flat surface transformer, electronic equipment and flat surface transformer production method |
| WO2019201302A1 (en) * | 2018-04-19 | 2019-10-24 | 优尔特电子（深圳）有限公司 | Planar transformer, electronic device and manufacturing method for planar transformer |
| CN108335879B (en) * | 2018-04-19 | 2020-04-14 | 优尔特电子（深圳）有限公司 | Planar transformer, electronic equipment and manufacturing method of planar transformer |
| WO2022133662A1 (en) * | 2020-12-21 | 2022-06-30 | 深圳顺络电子股份有限公司 | Planar wire-wound transformer and manufacturing method therefor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150902 |