CN206331886U - Heavy-current planar transformer - Google Patents

Heavy-current planar transformer Download PDF

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Publication number
CN206331886U
CN206331886U CN201621233646.5U CN201621233646U CN206331886U CN 206331886 U CN206331886 U CN 206331886U CN 201621233646 U CN201621233646 U CN 201621233646U CN 206331886 U CN206331886 U CN 206331886U
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CN
China
Prior art keywords
current
pcb board
heavy
coil
layer
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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.)
Withdrawn - After Issue
Application number
CN201621233646.5U
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Chinese (zh)
Inventor
许锦为
任如勇
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Acbel Electronics Dongguan Co Ltd
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Acbel Electronics Dongguan Co Ltd
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Priority to CN201621233646.5U priority Critical patent/CN206331886U/en
Application granted granted Critical
Publication of CN206331886U publication Critical patent/CN206331886U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of heavy-current planar transformer, and the heavy-current planar transformer includes conductive supporting bar, high current coil, pcb board, at least four layers of the high current coil, and each layer high current coil, which is stacked, to be set, and has gap between each layer high current coil;At least three layers of the pcb board, each layer pcb board, which is stacked, to be set, and the windings section of each pcb board is inserted in the gap of high current coil respectively, and electric current exit and the High-current output pin of each pcb board are welded.There was only individual layer or double-layer PCB board relative to tradition, this programme structure is more than three layers, and flat pcb board has larger surface area and length of magnetic path ratio, both resistance to pressure request had been improved, area of dissipation is added, thermal resistance is reduced, power density is improved, exciting current is increased again, open circuit loss is reduced, leakage inductance is reduced, efficiency is improved, flat high current coil can also improve heat dispersion, and provide preferably shielding.

Description

Heavy-current planar transformer
Technical field
The utility model is related to field transformer technology, refers in particular to a kind of heavy-current planar transformer.
Background technology
Twentieth century the mid-90, with the substantial increase of telecommunications and message processing device demand, use The assembling of surface mounting technique, it is desirable to which electronic transformer is minimized, the ferrite core flat surface transformer of compact just should Transport and give birth to.Compared with traditional transformer, the maximum difference of flat surface transformer is magnetic core and its coil windings.Flat surface transformer There is no copper conductor winding, instead the conducting wire thin layer being printed on pcb board (printed circuit board (PCB)) of single or multiple lift, because And its thickness is far below conventional transformer.In flat surface transformer, because " wire " as winding is actually some planes Conductor, thus available very big current density, every layer of winding maximum current is up to 200A.Simultaneously as magnetic core is small, loss It is few, its available higher efficiency.When switching frequency be 500kHz when, its operating efficiency can reach 97%, its high current density and High efficiency can make single transformer power up to 5W-20000W.With the development of electronic information technology, electronic transformer will enter one What is walked develops to small-size light-weight, highly effective and safe, surface installation, chip, planarization, high reliability and production automation direction.Mesh Before, all start to use planar transformer technology in external many power supply products, such as battery charge power supply, communication equipment are distributed Formula power supply, UPS etc..
Utility model content
In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide a kind of high current to the utility model Flat surface transformer, with Multi-layer PCB structure, had both improved resistance to pressure request, and had added area of dissipation, and reduced thermal resistance, improved Power density, increases exciting current again, reduces open circuit loss, reduces leakage inductance, improves efficiency.
To achieve the above object, the utility model is using following technical scheme:
A kind of heavy-current planar transformer, including conductive supporting bar, high current coil, pcb board, conductive supporting bar welding In one end of high current coil, the pcb board plug-in mounting is in the other end of high current coil;Wherein, the high current coil at least four Layer, each layer high current coil, which is stacked, to be set, and has gap between each layer high current coil;At least three layers of the pcb board, each layer Pcb board, which is stacked, to be set, and the windings section of each pcb board is inserted in the gap of high current coil respectively, the electric current exit of each pcb board Welded with High-current output pin.
As a kind of preferred scheme, the windings section of the pcb board is annular, heavy-current planar transformer it is primary around Group and secondary windings are routed on the different layers of pcb board;The electric current exit of pcb board be provided with multiple vias, armature winding and The wiring of secondary windings is guided into and High-current output pin is fitted with via, via, the via and High-current output of each layer pcb board Pin scolding tin is connected.
As a kind of preferred scheme, the high current coil is circular arc, and its side has current feedthrough, and the electric current draws Enter end and be provided with inserting high current input pin in through hole, through hole, high current input pin is connected with through hole scolding tin.
As a kind of preferred scheme, insulating trip is provided between the high current coil and pcb board.
As a kind of preferred scheme, the conductive supporting bar is flat sheet body, and the end bending of the conductive supporting bar is set Put.
As a kind of preferred scheme, the high current coil is copper sheet or iron plate.
The utility model has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technology Scheme understands that it includes conductive supporting bar, high current coil, pcb board mainly due to heavy-current planar transformer, power supply from Conductive supporting bar enters, and armature winding and time group winding on pcb board are connected to by high current coil, boosting is produced or is depressured Afterwards, exported from output pin;Again by least four layers of high current coil, at least three layers of pcb board, to form multilayer planar change Depressor, only has individual layer or double-layer PCB board relative to tradition, and this programme is more than three layers structures, and flat pcb board has larger table Area and length of magnetic path ratio, had both improved resistance to pressure request, and had added area of dissipation, and reduced thermal resistance, and improved power density, increased again Big exciting current, reduces open circuit loss, reduces leakage inductance, improve efficiency;Flat high current coil can also be improved Heat dispersion, and preferably shielding is provided.
More clearly to illustrate architectural feature of the present utility model and effect, come below in conjunction with the accompanying drawings with specific embodiment pair The utility model is described in detail.
Brief description of the drawings
Fig. 1 is the assembly structure diagram of the embodiment of the utility model.
Fig. 2 is the decomposition texture schematic diagram of the embodiment of the utility model.
Fig. 3 is Fig. 2 front view.
Accompanying drawing identifier declaration:
10th, conductive supporting bar 11, bending are set
20th, high current coil 21, gap
22nd, current feedthrough 23, through hole
24th, transformer input pin 30, pcb board
31st, windings section 32, electric current exit
321st, via 33, transformer output pin
40th, insulating trip.
Embodiment
It refer to shown in Fig. 1 to Fig. 3, be a kind of that show the concrete structure of the preferred embodiment of the utility model Heavy-current planar transformer, including conductive supporting bar 10, high current coil 20, pcb board 30, the conductive supporting bar 10 are welded in greatly One end of current coil, the pcb board 30 is plugged in the other end of high current coil.
Wherein, at least four layers of the high current coil 20, each layer high current coil 20, which is stacked, to be set, each layer high current coil There is gap 21 between 20;At least three layers of the pcb board 30, each layer pcb board 30, which is stacked, to be set, the winding portion of each pcb board 30 31 are divided to insert respectively in the gap 21 between major current coils 20, the electric current exit 32 and High-current output of each pcb board 30 Pin 33 is welded.So, multilayer planar transformer is formed, there was only individual layer or double-layer PCB board relative to tradition, this programme is three layers Above structure, flat pcb board has larger surface area and length of magnetic path ratio, had both improved resistance to pressure request, and had added area of dissipation, Thermal resistance is reduced, power density is improved, exciting current is increased again, reduce open circuit loss, reduce leakage inductance, effect is improved Rate;Flat high current coil 20 can also improve heat dispersion, and provide preferably shielding.
The windings section 31 of the pcb board 30 is annular, the armature winding and secondary windings of heavy-current planar transformer On the different layers for being routed in pcb board 30, by increasing capacitance it is possible to increase the coupling between armature winding, leakage inductance is reduced, while so that electric current is flat It is distributed, reduces transformer loss.If for example, in the case where the turn ratio of armature winding and secondary windings does not change, Armature winding decile is arranged on to two windings on two pieces of pcb boards, and the pcb board for being provided with secondary windings is clipped in the middle, It is more preferable with the transformation performance of such a structure.For example, it is also possible to which two armature windings in parallel are set up separately in two pieces of pcb boards up and down On, secondary windings is located on one piece of pcb board, and is clipped in the centre of two pieces of pcb boards above and below armature winding, by it is this it is in parallel just Level winding, the electric current of conducting wire can be very big, flat surface transformer is turned into a kind of high-power transformer.Certainly, may be used also With on demand in parallel or series two pieces carry secondary windings pcb board, the pcb board for being provided with armature winding is clipped in two pieces of time groups Between the pcb board of winding.
The electric current exit 32 of each layer pcb board 30 is provided with multiple vias 321, and the wiring of armature winding and secondary windings is led To via 321, High-current output pin 33, the via of High-current output pin 33 and each layer pcb board 30 are fitted with via 321 321 scolding tin are connected, and so, realize the output of transformer.
The high current coil 20 is circular arc, is made up of copper sheet or iron plate.One end of high current coil 20 has electricity Leading-in end 22 is flowed, the current feedthrough 22 is provided with inserting high current input pin 24 in through hole 23, through hole 23, high current input Pin 24 is connected with the scolding tin of through hole 23 of each layer, and is connected on demand with conductive supporting bar 10, so, realizes the defeated of transformer Enter.
In addition, insulating trip 40 is provided between each layer high current coil 20 and pcb board 30, to ensure the resistance to of flat surface transformer Press performance.Further, the conductive supporting bar 10 is flat sheet body, and the end bending of the conductive supporting bar 10 sets 11.
The operation principle of the heavy-current planar transformer of the utility model is as follows:Power supply enters from conductive supporting bar 10, leads to Super-high-current coil 20 is connected to armature winding and time group winding on pcb board 30, produces after boosting or step-down, from output pin Output.
In summary, design focal point of the present utility model is that it includes mainly due to heavy-current planar transformer Conductive supporting bar 10, high current coil 20, pcb board 30, by least four layers of high current coil 20, pcb board 30 at least three Layer, to form multilayer planar transformer, only has individual layer or double-layer PCB board 30, this programme is more than three layers structures relative to tradition, Flat pcb board 30 has larger surface area and the length of magnetic path ratio, both adds area of dissipation, reduces thermal resistance, improves work( Rate density, increases exciting current again, reduces open circuit loss, reduces leakage inductance, improves efficiency.Flat high current coil 20 can also improve heat dispersion, and provide preferably shielding.
The above, is only preferred embodiment of the present utility model, and not technical scope of the present utility model is made Any limitation, therefore every any trickle amendment made according to technical spirit of the present utility model to above example, equivalent change Change with modification, in the range of still falling within technical solutions of the utility model.

Claims (6)

1. a kind of heavy-current planar transformer, it is characterised in that:Including conductive supporting bar, high current coil, pcb board, the conduction Support bar is welded in one end of high current coil, and the pcb board plug-in mounting is in the other end of high current coil;Wherein, the high current line At least four layers of circle, each layer high current coil, which is stacked, to be set, and has gap between each layer high current coil;The pcb board is at least There are three layers, each layer pcb board, which is stacked, to be set, and the windings section of each pcb board is inserted in the gap of high current coil respectively, each pcb board Electric current exit and High-current output pin weld.
2. heavy-current planar transformer according to claim 1, it is characterised in that:The windings section of the pcb board is circle Annular, the armature winding and secondary windings of heavy-current planar transformer are routed on the different layers of pcb board;The electric current of pcb board draws Go out end and be provided with multiple vias, the wiring of armature winding and secondary windings, which is guided into, to be fitted with High-current output in via, via and draw Pin, the via of each layer pcb board is connected with High-current output pin scolding tin.
3. heavy-current planar transformer according to claim 1 or 2, it is characterised in that:The high current coil is circular arc Shape, its side has current feedthrough, and the current feedthrough, which is provided with through hole, through hole, inserts high current input pin, big electricity Stream input pin is connected with through hole scolding tin.
4. heavy-current planar transformer according to claim 1, it is characterised in that:The high current coil and pcb board it Between be provided with insulating trip.
5. heavy-current planar transformer according to claim 1, it is characterised in that:The conductive supporting bar is flat sheet Body, the end bending of the conductive supporting bar is set.
6. heavy-current planar transformer according to claim 1, it is characterised in that:The high current coil is copper sheet or iron Piece.
CN201621233646.5U 2016-11-17 2016-11-17 Heavy-current planar transformer Withdrawn - After Issue CN206331886U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621233646.5U CN206331886U (en) 2016-11-17 2016-11-17 Heavy-current planar transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621233646.5U CN206331886U (en) 2016-11-17 2016-11-17 Heavy-current planar transformer

Publications (1)

Publication Number Publication Date
CN206331886U true CN206331886U (en) 2017-07-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621233646.5U Withdrawn - After Issue CN206331886U (en) 2016-11-17 2016-11-17 Heavy-current planar transformer

Country Status (1)

Country Link
CN (1) CN206331886U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106449047A (en) * 2016-11-17 2017-02-22 康舒电子(东莞)有限公司 High-current planar transformer and manufacturing method thereof
CN112071583A (en) * 2020-07-23 2020-12-11 中国科学院电工研究所 High-isolation voltage-resistant planar transformer and high-voltage insulation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106449047A (en) * 2016-11-17 2017-02-22 康舒电子(东莞)有限公司 High-current planar transformer and manufacturing method thereof
CN106449047B (en) * 2016-11-17 2018-07-17 康舒电子(东莞)有限公司 Heavy-current planar transformer and preparation method thereof
CN112071583A (en) * 2020-07-23 2020-12-11 中国科学院电工研究所 High-isolation voltage-resistant planar transformer and high-voltage insulation method thereof

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Granted publication date: 20170714

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