CN114300240A - High-density high-power flat transformer and assembling method thereof - Google Patents
High-density high-power flat transformer and assembling method thereof Download PDFInfo
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- CN114300240A CN114300240A CN202210043761.XA CN202210043761A CN114300240A CN 114300240 A CN114300240 A CN 114300240A CN 202210043761 A CN202210043761 A CN 202210043761A CN 114300240 A CN114300240 A CN 114300240A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 175
- 230000000712 assembly Effects 0.000 claims abstract description 47
- 238000000429 assembly Methods 0.000 claims abstract description 47
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000017525 heat dissipation Effects 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 155
- 239000010949 copper Substances 0.000 claims description 154
- 229910052802 copper Inorganic materials 0.000 claims description 154
- 239000010410 layer Substances 0.000 claims description 61
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002500 effect on skin Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The invention provides a high-density high-power flat transformer and an assembling method thereof. The high-density high-power flat transformer comprises two iron cores for improving the heat dissipation performance, a primary winding assembly, a secondary winding assembly, a conductive input end and a conductive output end, wherein the two iron cores are symmetrically arranged, the primary winding assembly is arranged between the two iron cores, the conductive input end is connected with one end of the primary winding assembly, the conductive output end is connected with one end of the primary winding assembly, which is far away from the conductive input end, the secondary winding assembly comprises three primary winding assemblies and two secondary winding assemblies, and the three primary winding assemblies and the two secondary winding assemblies are alternately arranged between the two iron cores. The large-area heat dissipation characteristic of the magnetic core is achieved.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a high-density high-power flat transformer and an assembling method thereof.
Background
The flat-plate transformer adopted in the industry is mostly a PQ-type magnetic core, the heat dissipation area of the magnetic core is too small and the power is too low due to the structure of the magnetic core, the heat is not easy to be led out by applying a radiator so as to realize stable output, the output power is low, and the total output power is generally not more than 0.5KW to the maximum extent; in addition, because of the influence of the structural factors of the magnetic core and the coil holder, the secondary turns can only realize single-turn output, and can not realize multi-turn series high-voltage output, and the output end needs to be welded and communicated by adopting a lead wire, and can not bear the output of large current, and because of adopting a naked lamination winding mode, the structure is not in accordance with the safety regulation structural characteristics. The other EE type transformer of the planar printed circuit has the manufacturing process problems that the thickness and the width of the copper clad foil are seriously limited, and the heavy current and the high-power output cannot be realized, so that the planar transformers of the two structures have not wide application scenes and low practicability.
Therefore, it is urgently required to redesign a new high-density high-power planar transformer to solve the above problems.
Disclosure of Invention
The invention provides a high-density high-power flat transformer and an assembling method thereof, which aim to solve the technical problems in the background technology.
The invention provides a high-density high-power flat transformer which comprises two iron cores for improving heat dissipation performance, a primary winding assembly, a secondary winding assembly, an electric conduction input end and an electric conduction output end, wherein the two iron cores are symmetrically arranged, the primary winding assembly is arranged between the two iron cores, the electric conduction input end is connected with one end of the primary winding assembly, the electric conduction output end is connected with one end of the primary winding assembly, which is far away from the electric conduction input end, the secondary winding assembly comprises three primary winding assemblies and two secondary winding assemblies, the three primary winding assemblies and the two secondary winding assemblies are alternately arranged between the two iron cores, the primary winding assembly comprises a first electric conduction copper sheet, three second electric conduction copper sheets and a plurality of first insulation films, and the first electric conduction copper sheet and the three second electric conduction copper sheets are sequentially arranged by being clung to the inner walls of the iron cores, the secondary winding assembly comprises two first conductive copper sheets, two fourth conductive copper sheets, a third conductive copper sheet, a fifth conductive copper sheet and a plurality of second insulating films, the two first conductive copper sheets and the two fourth conductive copper sheets are alternately arranged respectively, the fifth conductive copper sheet and the third conductive copper sheet are sequentially arranged on one side of the fourth conductive copper sheet far away from the first conductive copper sheets, and the plurality of second insulating films are arranged between the two first conductive copper sheets, the two fourth conductive copper sheets, the third conductive copper sheet and the fifth conductive copper sheet respectively.
Optionally, the outer side surface of the iron core is detachably connected with a heat-conducting silica gel pad for improving the heat dissipation performance of the iron core.
Optionally, the core is rectangular in configuration.
Optionally, the first conductive copper sheet is of a double-layer structure, one end of the first conductive copper sheet is provided with a first input end, and the other end of the first conductive copper sheet is provided with a first output end.
Optionally, the second conductive copper sheet is of a single-layer structure, one end of the second conductive copper sheet is provided with a second input end, and the other end of the second conductive copper sheet is provided with a second output end.
Optionally, the third conductive copper sheet is of a double-layer structure, one end of the third conductive copper sheet is provided with a third input end, and the other end of the third conductive copper sheet is provided with a third output end.
Optionally, the fourth conductive copper sheet is of a double-layer structure, a fourth input end is arranged at one end of the fourth conductive copper sheet, and a fourth output end is arranged at the other end of the third conductive copper sheet.
Optionally, the fifth conductive copper sheet is of a double-layer structure, one end of the fifth conductive copper sheet is provided with a fifth input end, and the other end of the fifth conductive copper sheet is provided with a fifth output end.
Optionally, one first conductive copper sheet and three second conductive copper sheets within the primary winding assembly are sequentially connected in series.
Optionally, the present invention further provides an assembling method of a high-density high-power planar transformer, including the following steps: s1, deburring, wherein the first conductive copper sheet, the second conductive copper sheet, the third conductive copper sheet, the fourth conductive copper sheet and the fifth conductive copper sheet are all subjected to deburring; s2, assembling the primary coil winding, wherein the left sides of the first layer of primary winding assembly and the third layer of primary winding assembly are parallel, and the right side of the third layer of primary winding assembly is welded with the input end of the fifth layer of primary winding assembly to form a complete primary coil winding; s3, assembling secondary coil windings, and installing single secondary winding assemblies which are connected in series and parallel into the space between the primary winding assemblies of the first layer and the primary winding assemblies of the third layer, so as to form a secondary winding assembly of the second layer; installing the single secondary winding assembly which is connected in series and parallel to be completed between the third layer primary winding assembly and the fifth layer primary winding assembly, thereby forming a fourth layer secondary winding assembly; the second layer of secondary winding assembly and the fourth layer of secondary winding assembly are welded in the holes at the head and the tail ends to form a complete secondary coil winding; s4, installing a conductive end, and electrically connecting a conductive input end and a conductive output end to two sides of the primary coil winding respectively; and S5, installing the iron cores, and symmetrically arranging the two iron cores at the outer sides of the primary coil winding and the secondary coil winding respectively.
The invention has the following beneficial effects:
the high-density high-power flat transformer comprises two iron cores for improving heat dissipation performance, primary and secondary winding assemblies, a conductive input end and a conductive output end, wherein the two iron cores are symmetrically arranged, the primary and secondary winding assemblies are arranged between the two iron cores, the conductive input end is connected with one end of the primary and secondary winding assemblies, the conductive output end is connected with one end of the primary and secondary winding assemblies far away from the conductive input end, the secondary winding assembly comprises three primary winding assemblies and two secondary winding assemblies, and the three primary and secondary winding assemblies and the two secondary winding assemblies are alternately arranged between the two iron cores, wherein the high-density high-power flat transformer adopts tighter fit among the primary and secondary winding assemblies, larger conductive section, better heat dissipation property and excellent skin effect property, is suitable for being adopted by high-frequency and high-power supplies, and simultaneously reduces the temperature rise generated by copper loss to the greatest extent and influences on the magnetic cores, by the large-area heat dissipation characteristic of the magnetic core, the way of conducting the temperature rise of the magnetic core to the conducting strips is greatly reduced, the copper loss and the magnetic loss of the transformer are balanced, and the transformer can stably output power energy with sufficient amount.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic top view of a high-density high-power planar transformer according to the present invention;
FIG. 2 is a schematic diagram of a side view of a high-density high-power planar transformer according to the present invention;
fig. 3 is a schematic structural diagram of a first view angle of a primary winding assembly of a high-density high-power planar transformer provided by the present invention;
fig. 4 is a schematic structural diagram of a first view angle of a secondary winding assembly of the high-density high-power planar transformer provided by the invention;
fig. 5 is a structural diagram of a second view angle of the primary winding assembly of the high-density high-power planar transformer provided by the invention;
fig. 6 is a structural diagram of a second view angle of the secondary winding assembly of the high-density high-power planar transformer provided by the present invention;
fig. 7 is a structural diagram of a third view angle of the primary winding assembly of the high-density high-power planar transformer provided by the invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 to 7, the high-density high-power planar transformer of the present invention includes two cores 100 for improving heat dissipation, a primary and secondary winding assembly 200, a conductive input terminal 500, and a conductive output terminal 600;
the two iron cores 100 are symmetrically arranged, the primary and secondary winding assemblies 200 are arranged between the two iron cores 100, the conductive input end 500 is connected with one end of the primary and secondary winding assemblies 200, the conductive output end 600 is connected with one end of the primary and secondary winding assemblies 200 far away from the conductive input end 500, the secondary winding assembly comprises three primary winding assemblies and two secondary winding assemblies, the three primary winding assemblies and the two secondary winding assemblies are alternately arranged between the two iron cores 100, the primary winding assembly comprises a first conductive copper sheet 310, three second conductive copper sheets 320 and a plurality of first insulating films 330, the first conductive copper sheet 310 and the three second conductive copper sheets 320 are sequentially arranged close to the inner wall of the iron core 100, the plurality of first insulating films 330 are respectively arranged between the first conductive copper sheet 310 and the plurality of second conductive copper sheets 320, and the secondary winding assembly comprises two first conductive copper sheets 310, two second conductive copper sheets 320, The two first conductive copper sheets 310 and the two second conductive copper sheets 410 are alternately arranged, the fifth conductive copper sheets 430 and the third conductive copper sheets 420 are sequentially arranged on one side of the fourth conductive copper sheets 410 away from the first conductive copper sheets 310, and the plurality of second insulating films 440 are respectively arranged between the two first conductive copper sheets 310, the two fourth conductive copper sheets 410, the third conductive copper sheets 420 and the fifth conductive copper sheets 430;
the iron core 100 in the invention adopts an EE type high-grade ferrite magnetic core, a primary and secondary winding assembly 200 which is composed of a copper plate and has a high-tightness structure is clamped in the middle, the whole structure presents a flat high-density structure, meanwhile, the conductive input end 500 and the conductive output end 600 are both directly led out from the primary and secondary winding assembly 200 by adopting a conductive copper sheet, the extremely-low copper resistance loss, the maximum output current, the high-energy density and ultra-stable high-power output energy can be realized, and the highest output power of 15KW can be realized;
in addition, the primary and secondary winding assemblies 200 adopt a large-current butt-welding machine to weld the head and tail ends of the copper sheets, so that the copper sheets become single windings which are connected in series and have the number of turns in accordance with the design for standby;
specifically, the primary winding assembly adopts a sandwich clamping winding mode to reduce leakage inductance, increase primary and secondary coupling and improve magnetoelectric conversion efficiency;
the total number of the primary winding assemblies is three, and the winding method of the primary winding assemblies comprises the following steps:
the first layer of primary winding assembly is connected with the left winding of the third layer of primary winding assembly in parallel, and then the right side of the third layer of series winding is connected with the fifth layer of primary winding assembly for welding to form a complete primary coil winding;
the secondary winding component is assembled in two layers: the single primary winding assembly which is connected in series and parallel is connected with a second layer secondary winding assembly and a fourth layer secondary winding assembly which are clamped in the primary winding assembly in a head-tail hole tinned copper wire soldering mode to form a complete transformer secondary coil, and the whole coil is connected through series and parallel soldering tin, so that the purpose of outputting large current, high power and high voltage can be achieved.
Specifically, the first conductive copper sheet 310 is a double-layer structure, and one end of the first conductive copper sheet 310 is provided with a first input end 311, and the other end of the first conductive copper sheet 310 is provided with a first output end 312. The second conductive copper sheet 320 is a single-layer structure, and one end of the second conductive copper sheet 320 is provided with a second input end 321, and the other end of the second conductive copper sheet 320 is provided with a second output end 322. The third conductive copper sheet 420 has a double-layer structure, and one end of the third conductive copper sheet 420 is provided with a third input end 421, and the other end of the third conductive copper sheet 420 is provided with a third output end 422. The fourth conductive copper sheet 410 has a double-layer structure, and one end of the fourth conductive copper sheet 410 is provided with a fourth input end 411, and the other end of the third conductive copper sheet 420 is provided with a fourth output end 412. The fifth conductive copper sheet 430 is of a double-layer structure, one end of the fifth conductive copper sheet 430 is provided with a fifth input end 431, the other end of the fifth conductive copper sheet 430 is provided with a fifth output end 432, and one first conductive copper sheet 310 and three second conductive copper sheets 320 in the primary winding assembly are sequentially connected in series.
The primary winding assembly comprises a first insulating film 330, a first conductive copper sheet 310, a first insulating film 330, a second conductive copper sheet 320, a first insulating film 330 and a second conductive copper sheet 320, wherein the first conductive copper sheet 310 is connected with the conductive input end 500, then, the output end of the first conductive copper sheet is connected with the input end of the first conductive copper sheet 320, the output end of the first conductive copper sheet 320 is connected with the input end of the second conductive copper sheet 320, and the output end of the second conductive copper sheet 320 is connected with the input end of the third conductive copper sheet 320.
The secondary winding component comprises a second insulating film 440, a first conductive copper sheet 310, a second insulating film 440, a fourth conductive copper sheet 410, a second insulating film 440, a fifth conductive copper sheet 430, a second insulating film 440 and a third conductive copper sheet 420;
the two first conductive copper sheets 310 are firstly connected in parallel, then the two fourth conductive copper sheets 410 are connected in parallel, and finally the first conductive copper sheets 310 and the fourth conductive copper sheets 410 are sequentially connected in series, and the fifth conductive copper sheets 430 and the third conductive copper sheets 420 are connected in series to form a complete secondary winding assembly;
it should be noted that the secondary winding assembly of the present invention is composed of five layers in total, the first layer is the primary winding assembly, the second layer is the secondary winding assembly, the third layer is the primary winding assembly, the fourth layer is the secondary winding assembly, and the fifth layer is the primary winding assembly.
Every conducting strip all needs to carry out burring processing, fills up high temperature first insulating film 330 or second insulating film 440 and keeps apart between every conducting strip, and in practice, first insulating film 330 and second insulating film 440 are same structure, and the conducting strip of many circles needs the high temperature insulating tape of 0.05mm thick, wraps up the insulating isolation processing of one deck. The single primary winding assembly and the single secondary winding assembly which are connected in series and in parallel are placed in different high-temperature plastic protective casings for insulation and isolation protection, after five groups of single primary winding assemblies and five groups of single secondary winding assemblies are assembled into a complete coil, the series and parallel connection welding is convenient except that the terminal parts are exposed, the glue is dispensed at other gaps for sealing, the voltage resistance of the secondary winding assemblies at the gaps can reach more than 5KV, and the safety is extremely high;
different conducting strips are processed to form multi-turn output, and after the head end and the tail end of the conducting strips are welded into a whole by a butt welding machine, the conducting strips are connected in series and parallel, and then the copper sheet of the secondary winding assembly is straightly led out, so that the characteristics of direct connection of an input end and an output end with circuit leads to output large current, high voltage and high-density power output are formed; and the copper plate is used as the winding, so that the primary winding and the secondary winding are coupled more tightly, the electrical characteristics are better, and the safety of the power supply power tube is effectively protected.
In addition, the invention can realize the miniaturization and flattening of the transformer, the stabilization of high-density output power, the improvement of the application range of output voltage, the improvement of the characteristic of large-current output and higher safety insulation design. Because the secondary winding component adopts a segmented sandwich compression winding method, the primary pole magnetic field coupling is sufficient, the magnetoelectric conversion efficiency is greatly improved, the magnetic leakage induction quantity is extremely low, the peak wave value superposed on the MOS tube is extremely low, and the overall reliability and safety of the power supply are effectively protected.
In this embodiment, a heat conductive silica gel pad for improving heat dissipation performance of the core 100 is detachably connected to an outer side surface of the core 100.
Wherein, heat conduction silica gel pad can improve iron core 100's heat-sinking capability to in order to realize the output of the transformer high density, the powerful more stable, and, also can carry out better radiating effect at the aluminium radiator among the heat conduction silica gel pad lateral surface pressurization prior art.
In the present embodiment, the core 100 has a rectangular structure.
The magnetic core is of a rectangular structure, so that the conductive input end 500 and the conductive output end 600 can be directly led out from the left and right sides, and the direct output of large current is realized.
In this embodiment, the present invention further provides an assembling method of a high-density high-power planar transformer, including the following steps: s1, performing deburring treatment, wherein the first conductive copper sheet 310, the second conductive copper sheet 320, the third conductive copper sheet 420, the fourth conductive copper sheet 410 and the fifth conductive copper sheet 430 are all subjected to deburring treatment; s2, assembling the primary coil winding, wherein the left sides of the first layer of primary winding assembly and the third layer of primary winding assembly are parallel, and the right side of the third layer of primary winding assembly is welded with the input end of the fifth layer of primary winding assembly to form a complete primary coil winding; s3, assembling secondary coil windings, and installing single secondary winding assemblies which are connected in series and parallel into the space between the primary winding assemblies of the first layer and the primary winding assemblies of the third layer, so as to form a secondary winding assembly of the second layer; installing the single secondary winding assembly which is connected in series and parallel to be completed between the third layer primary winding assembly and the fifth layer primary winding assembly, thereby forming a fourth layer secondary winding assembly; the second layer of secondary winding assembly and the fourth layer of secondary winding assembly are welded in the holes at the head and the tail ends to form a complete secondary coil winding; s4, installing a conductive end, and electrically connecting a conductive input end and a conductive output end to two sides of the primary coil winding respectively; s5, installing the iron cores 100, and symmetrically arranging the two iron cores 100 at the outer sides of the primary coil winding and the secondary coil winding respectively, thereby completing the assembly process of the high-density high-power flat transformer.
The high-density high-power flat transformer comprises two iron cores 100 for improving heat dissipation performance, a primary and secondary winding assembly 200, a conductive input end 500 and a conductive output end 600, wherein the two iron cores 100 are symmetrically arranged, the primary and secondary winding assembly 200 is arranged between the two iron cores 100, the conductive input end 500 is connected with one end of the primary and secondary winding assembly 200, the conductive output end 600 is connected with one end of the primary and secondary winding assembly 200 away from the conductive input end 500, the secondary winding assembly comprises three primary winding assemblies and two secondary winding assemblies, and the three primary winding assemblies and the two secondary winding assemblies are alternately arranged between the two iron cores 100, wherein the primary and secondary winding assemblies 200 are more tightly attached, the conductive section is larger, the heat dissipation performance is better, the skin effect performance is excellent, the high-density high-power flat transformer is suitable for being used by a high-frequency and high-power supply, and the temperature rise caused by copper loss is reduced to the greatest extent, the influence on the magnetic core greatly reduces the way of conducting the temperature rise of the magnetic core to the conducting strips through the large-area heat dissipation characteristic of the magnetic core, so that the copper loss and the magnetic loss of the transformer are balanced, and the transformer can stably output power energy with sufficient amount.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A high-density high-power planar transformer is characterized by comprising
The two iron cores are used for improving the heat dissipation performance and are symmetrically arranged;
a primary and secondary winding assembly disposed between the two cores;
a conductive input connected to one end of the primary and secondary winding assemblies;
a conductive output terminal connected to an end of the primary and secondary winding assemblies remote from the conductive input terminal;
the secondary winding assembly comprises three primary winding assemblies and two secondary winding assemblies, and the three primary winding assemblies and the two secondary winding assemblies are alternately arranged between the two iron cores;
the primary winding assembly comprises a first conductive copper sheet, three second conductive copper sheets and a plurality of first insulating films, wherein the first conductive copper sheet and the three second conductive copper sheets are sequentially arranged close to the inner wall of the iron core, and the plurality of first insulating films are respectively arranged between the first conductive copper sheets and the plurality of second conductive copper sheets;
the secondary winding assembly comprises two first conductive copper sheets, two fourth conductive copper sheets, a third conductive copper sheet, a fifth conductive copper sheet and a plurality of second insulating films, the two first conductive copper sheets and the two fourth conductive copper sheets are alternately arranged respectively, the fifth conductive copper sheets and the third conductive copper sheets are sequentially arranged on one sides of the fourth conductive copper sheets far away from the first conductive copper sheets, and the plurality of second insulating films are arranged between the two first conductive copper sheets, the two fourth conductive copper sheets, the third conductive copper sheets and the fifth conductive copper sheets respectively.
2. The high-density high-power planar transformer according to claim 1, wherein a heat-conducting silica gel pad for improving heat dissipation performance of the iron core is detachably connected to the outer side surface of the iron core.
3. The high-density high-power planar transformer according to claim 1, wherein the core has a rectangular-shaped structure.
4. The high-density high-power planar transformer according to claim 1, wherein the first conductive copper sheet has a double-layer structure, and one end of the first conductive copper sheet is provided with a first input end, and the other end of the first conductive copper sheet is provided with a first output end.
5. The high-density high-power planar transformer according to claim 1, wherein the second conductive copper sheet has a single-layer structure, and a second input end is provided at one end of the second conductive copper sheet and a second output end is provided at the other end of the second conductive copper sheet.
6. The high-density high-power planar transformer according to claim 1, wherein the third conductive copper sheet has a double-layer structure, and a third input end is provided at one end of the third conductive copper sheet and a third output end is provided at the other end of the third conductive copper sheet.
7. The high-density high-power planar transformer according to claim 1, wherein the fourth conductive copper sheet has a double-layer structure, and a fourth input terminal is provided at one end of the fourth conductive copper sheet, and a fourth output terminal is provided at the other end of the third conductive copper sheet.
8. The high-density high-power planar transformer according to claim 1, wherein the fifth conductive copper sheet has a double-layer structure, and a fifth input terminal is provided at one end of the fifth conductive copper sheet, and a fifth output terminal is provided at the other end of the fifth conductive copper sheet.
9. A high-density high-power planar transformer according to claim 1, wherein one of said first conductive copper sheets and three of said second conductive copper sheets in said primary winding assembly are sequentially connected in series.
10. A method for assembling a high-density high-power planar transformer according to any one of claims 1 to 9, comprising the steps of:
s1, performing deburring treatment, wherein the first conductive copper sheet, the second conductive copper sheet, the third conductive copper sheet, the fourth conductive copper sheet and the fifth conductive copper sheet are all subjected to deburring treatment;
s2, assembling a primary coil winding, wherein the left sides of the primary winding assembly on the first layer and the primary winding assembly on the third layer are parallel, and the right side of the primary winding assembly on the third layer is welded with the input end of the primary winding assembly on the fifth layer to form a complete primary coil winding;
s3, assembling secondary winding packages, and installing the single secondary winding assembly which is connected in series and parallel into the space between the primary winding assembly of the first layer and the primary winding assembly of the third layer, so as to form the secondary winding assembly of the second layer;
installing the single secondary winding assembly which is connected in series and parallel to be completed between the primary winding assembly of the third layer and the primary winding assembly of the fifth layer, thereby forming the secondary winding assembly of the fourth layer;
the secondary winding assembly on the second layer is welded with the secondary winding assembly on the fourth layer through holes from head to tail to form a complete secondary coil winding;
s4, installing a conductive end, and electrically connecting the conductive input end and the conductive output end to two sides of the primary coil winding respectively;
and S5, installing the iron cores, and symmetrically arranging the two iron cores at the outer sides of the primary coil winding and the secondary coil winding respectively.
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| CN108053981A (en) * | 2018-02-06 | 2018-05-18 | 中国振华(集团)新云电子元器件有限责任公司(国营第四三二六厂) | Flat surface transformer and manufacturing method |
| CN208655393U (en) * | 2018-09-17 | 2019-03-26 | 南京康伦电子有限公司 | A kind of flat-plate transformer |
| CN211181916U (en) * | 2019-12-18 | 2020-08-04 | 深圳市高斯宝电气技术有限公司 | Transformer structure |
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| US20080197953A1 (en) * | 2005-04-21 | 2008-08-21 | Pstek Co., Ltd. | Transformer Having Multi-Layered Winding Structure |
| CN205356123U (en) * | 2016-01-13 | 2016-06-29 | 江阴市天马电源制造有限公司 | Synchronous Rectifier high frequency switching power supply |
| CN108053981A (en) * | 2018-02-06 | 2018-05-18 | 中国振华(集团)新云电子元器件有限责任公司(国营第四三二六厂) | Flat surface transformer and manufacturing method |
| CN208655393U (en) * | 2018-09-17 | 2019-03-26 | 南京康伦电子有限公司 | A kind of flat-plate transformer |
| CN211181916U (en) * | 2019-12-18 | 2020-08-04 | 深圳市高斯宝电气技术有限公司 | Transformer structure |
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