CN116453829B - Planar transformer and manufacturing method thereof - Google Patents
Planar transformer and manufacturing method thereof Download PDFInfo
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- CN116453829B CN116453829B CN202310253769.3A CN202310253769A CN116453829B CN 116453829 B CN116453829 B CN 116453829B CN 202310253769 A CN202310253769 A CN 202310253769A CN 116453829 B CN116453829 B CN 116453829B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 34
- 238000003825 pressing Methods 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 5
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000003032 molecular docking Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 210000001503 joint Anatomy 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/005—Impregnating or encapsulating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The application relates to a planar transformer and a manufacturing method thereof, and relates to the technical field of planar transformers, wherein the planar transformer comprises an upper magnetic core, a lower magnetic core, a plurality of primary coils, a plurality of secondary coils and an auxiliary mounting rack, the auxiliary mounting rack is provided with a plurality of mounting grooves, and the plurality of primary coils and the plurality of secondary coils are arranged in the corresponding mounting grooves in a sliding manner; limiting grooves are formed in the two opposite side walls of the auxiliary mounting frame along the vertical direction, and the upper magnetic core and the lower magnetic core are in sliding fit with the limiting grooves. The application provides positioning and limiting for the installation of the upper magnetic core, the lower magnetic core, the primary coil and the secondary coil through the arrangement of the installation groove and the limiting groove on the auxiliary installation frame, so that the phenomenon of moving or misalignment of the upper magnetic core, the lower magnetic core, the primary coil and the secondary coil caused by mutual influence during the installation is avoided.
Description
Technical Field
The application relates to the technical field of planar transformers, in particular to a planar transformer and a manufacturing method thereof.
Background
Transformers are a critical element in the power supply. Conventional transformers are typically constructed of copper coils, are bulky and are prone to electromagnetic interference. The planar transformer can effectively solve the problems of the volume and the high frequency of the common transformer.
The greatest difference between planar transformers and conventional transformers is the core and coil windings. The planar transformer adopts small-sized E-type, RM-type or ring-type ferrite cores, is usually made of high-frequency power, and has lower core loss at high frequency; the winding is formed by multi-layer lap winding, and the winding or copper sheet is overlapped on the planar high-frequency iron core to form a magnetic loop of the transformer. The design has low direct current copper resistance, low leakage inductance and low distributed capacitance, and can meet the design requirement of a resonant circuit. And because of the good magnetic shielding of the magnetic core, radio frequency interference can be restrained.
Currently, planar transformers are mainly composed of an upper core, a lower core, a primary coil and a secondary coil, wherein a firm connection is achieved between the upper core and the lower core and between adjacent primary and secondary coils mainly by means of an adhesive.
For the related art, when the adhesive is coated, the upper magnetic core and the lower magnetic core are not easy to align or move between the primary coil and the secondary coil, so that the adhesion is not smooth, and even the planar transformer needs to be detached again for reinstallation, the whole assembly time is prolonged, the production efficiency is affected, and each part is easily damaged in the process of disassembly.
Disclosure of Invention
The application aims to provide a planar transformer convenient to install and a manufacturing method thereof.
In a first aspect, the present application provides a planar transformer, which adopts the following technical scheme:
The planar transformer comprises an upper magnetic core, a lower magnetic core, a plurality of primary coils, a plurality of secondary coils and an auxiliary mounting rack, wherein a plurality of mounting grooves are formed in the auxiliary mounting rack, and the primary coils and the secondary coils are arranged in the corresponding mounting grooves in a sliding manner; and the side wall of the periphery of the auxiliary mounting frame is provided with a limiting groove, and the upper magnetic core and the lower magnetic core are matched with the limiting groove in a clamping way.
By adopting the technical scheme, the upper magnetic core, the lower magnetic core, the plurality of primary coils and the plurality of secondary coils form a planar transformer. The auxiliary installation rack is provided with the installation grooves, so that the primary coil and the secondary coil can be directly inserted into the corresponding installation grooves, the auxiliary installation rack can limit and support the primary coil and the secondary coil, and the movement condition of the upper magnetic core and the lower magnetic core to the primary coil and the secondary coil in the installation process can be reduced. The auxiliary installation clamp is provided with the upper limit groove, so that the upper magnetic core and the lower magnetic core can be limited in the installation process, the alignment of the upper magnetic core and the lower magnetic core is ensured, and the upper magnetic core and the lower magnetic core cannot be moved when glue is applied. In the installation of transformer, need not anchor clamps and frock just can make and go up magnetic core and lower magnetic core mutually position accuracy, improved planar transformer installation's convenience.
Optionally, the primary coil and the secondary coil are provided with a plurality of first positioning holes in a penetrating manner along the thickness direction of the primary coil and the secondary coil; a plurality of second positioning holes are formed in the auxiliary mounting frame, fixing columns are inserted and matched in the second positioning holes, and the axes of the first positioning holes and the second positioning holes are parallel to each other;
When the primary coil and the secondary coil are both installed in the corresponding installation grooves, the first positioning holes and the corresponding second positioning holes are coaxially arranged, and the fixing columns axially sequentially penetrate through the corresponding second positioning holes and the corresponding first positioning holes.
Through adopting above-mentioned technical scheme, when second locating hole and the first locating hole on primary coil and the secondary coil on the auxiliary mounting bracket communicate each other, insert the fixed column for the fixed column can be with primary coil and secondary coil locking, prevents that primary coil and secondary coil from sliding in the mounting groove.
Optionally, a plurality of heat dissipation grooves are formed in the auxiliary mounting frame.
By adopting the technical scheme, the heat dissipation in the working process of the primary coil and the secondary coil can be increased by arranging the heat dissipation grooves.
Optionally, the primary coil and the secondary coil are provided with a plurality of wiring holes in a penetrating manner, one side of the auxiliary mounting rack is provided with a binding post, the binding post is provided with a plurality of connecting holes, conductive posts are inserted and matched in the connecting holes, and the connecting holes are parallel to the axes of the wiring holes;
When the primary coil and the secondary coil are installed in the corresponding installation grooves, the wiring holes on the primary coil and the corresponding connection holes as well as the wiring holes on the secondary coil and the corresponding connection holes are coaxially arranged, and the conductive posts sequentially penetrate through the corresponding wiring holes and the corresponding connection holes.
By adopting the technical scheme, the wiring holes on the primary coil and the secondary coil are formed, and the positions of the primary coil and the secondary coil and the external wiring are provided. Set up the terminal on auxiliary mounting frame, set up the connecting hole on the terminal, when a plurality of wiring hole on the primary coil and the connecting hole that corresponds and a plurality of wiring hole on the secondary coil and the coaxial time of corresponding connecting hole, just can realize the switch-on of outside wire and primary coil and secondary coil through the intercommunication conductive column this moment, made things convenient for outside wiring.
Optionally, a plurality of fixed orifices has been seted up to terminal one side, the fixed orifices axial with connecting hole axial mutually perpendicular sets up, and a plurality of the fixed orifices communicates each other with a plurality of connecting hole one-to-one, the fixed orifices inner wall has fixing bolt through threaded connection.
Through adopting above-mentioned technical scheme, the seting of fixed orifices on the spliced pole sets up fixing bolt in the fixed orifices, twists and moves fixing bolt and can fix conductive column one end, also can be when carrying out outside wiring, can realize conductive column and external wire's quick connect and quick disconnection through twisting fixing bolt.
Optionally, the terminal is in auxiliary mounting frame homonymy is provided with two, two the terminal is followed connecting hole axial mutual interval sets up, a plurality of primary coil and a plurality of secondary coil all are located two between the terminal, electrically conductive post both ends insert respectively two in the terminal.
Through adopting above-mentioned technical scheme, the setting of two terminal posts can fix conductive column both ends, and the conductive column both ends of also being convenient for simultaneously homoenergetic communicate with the outside wiring, has provided the selectivity of the wiring of planar transformer.
Optionally, the installation on the auxiliary installation frame go up the magnetic core and the both sides face of lower magnetic core all is provided with locking Assembly, locking Assembly includes first slip post, second slip post and clamp plate, first slip post and second slip post interval set up the clamp plate both sides, a plurality of spouts have been seted up on the auxiliary installation frame, first slip post with the second slip post respectively with corresponding spout sliding fit.
Through adopting above-mentioned technical scheme, locking element's setting can be with auxiliary mounting bracket interconnect through first slip post and second slip post, then the clamp plate can be spacing last magnetic core and lower magnetic core, stability when magnetic core and lower magnetic core installation are gone up in the increase.
Optionally, a plurality of locking holes are formed in the pressing plate in a penetrating manner along the thickness direction of the pressing plate, and locking bolts are connected to the inner walls of the locking holes through threads.
Through adopting above-mentioned technical scheme, offer the locking hole on the clamp plate, locking hole internal thread connection locking bolt can increase the stability that locking component is fixed to upper magnetic core and lower magnetic core through twisting the locking bolt.
In a second aspect, the present application provides a method for manufacturing a planar transformer, which adopts the following technical scheme:
a method of manufacturing a planar transformer, comprising the steps of:
s1: correspondingly inserting the primary coil and the secondary coil into the auxiliary mounting frame;
s2: fixing the primary coil and the secondary coil;
S3: loading the lower magnetic core and locking the lower magnetic core;
S4: coating glue on the lower magnetic core;
s5: loading the upper magnetic core and locking the upper magnetic core;
S6: drying;
S7: and taking out the planar transformer.
Through adopting above-mentioned technical scheme, use auxiliary mounting bracket to realize primary coil, secondary, go up the location installation of magnetic core and lower magnetic core, auxiliary mounting bracket has the groove and the hole that realize primary coil, secondary, go up magnetic core and lower magnetic core location for when making planar transformer, do not need and extra anchor clamps and frock, improved the speed of manufacture, reduced the preparation degree of difficulty.
Optionally, the method further comprises the following steps before the step S1:
S0: preparing a primary coil and a secondary coil;
S01: winding a primary coil and a secondary coil;
S02: injection molding, namely coating adhesive layers outside the primary coil and the secondary coil;
s03: holes are drilled in the primary and secondary coils to expose terminals of the corresponding primary and secondary coils.
By adopting the technical scheme, when the primary coil and the secondary coil are coils wound by the lead, the outer parts of the primary coil and the secondary coil are required to be coated with the adhesive layer through injection molding, so that the primary coil and the secondary coil can be protected, and the primary coil and the secondary coil can be manufactured into blocks so as to be conveniently installed in the auxiliary installation frame; the arrangement of the drill holes can process the positions of the primary coil, the secondary coil and the external connecting wire, and is convenient for wiring.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the auxiliary installation rack is provided with the installation groove and the limit groove, and positioning and limiting are provided for the installation of the upper magnetic core, the lower magnetic core, the primary coil and the secondary coil, so that the upper magnetic core, the lower magnetic core, the primary coil and the secondary coil cannot move or be aligned due to mutual influence during the installation, and the convenience of the assembly of the planar transformer is improved.
2. The setting of locking component for go up magnetic core and lower magnetic core installation and the rubber coating back, with last magnetic core and lower magnetic core locking, make in the in-process of planar transformer stoving glue, go up magnetic core and lower magnetic core and can keep the state of alignment all the time.
3. In the manufacturing method of the planar transformer, when the primary coil and the secondary coil are coils wound by the lead, the primary coil and the secondary coil are required to be coated with glue layers through injection molding, so that the primary coil and the secondary coil can be protected, and the primary coil and the secondary coil can be manufactured into blocks, and are convenient to install in an auxiliary installation frame.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a planar transformer according to the present application.
Fig. 2 is a schematic view of an exploded structure of the auxiliary mounting bracket of the present application.
Fig. 3 is a schematic diagram of an exploded structure of the planar transformer of the present application.
Fig. 4 is a schematic diagram of the stacked structure of the primary and secondary windings in the planar transformer of the present application.
Fig. 5 is a partially enlarged schematic view of the portion B in fig. 2.
Fig. 6 is a partially enlarged schematic view of the portion a in fig. 1.
In the figure, 1, an upper magnetic core; 11. a first plug-in post; 12. a first docking post; 13. a second docking post; 2. a lower magnetic core; 21. the second plug-in column; 22. a third docking post; 23. a fourth docking post; 3. a primary coil; 4. a secondary coil; 5. an auxiliary mounting rack; 51. a mounting groove; 52. a relief hole; 53. a limit groove; 54. a second positioning hole; 55. a locking assembly; 551. a first sliding column; 552. a second sliding column; 553. a pressing plate; 554. a chute; 555. a locking hole; 556. a locking bolt; 56. binding posts; 561. a connection hole; 562. a fixing hole; 563. a fixing bolt; 57. a heat sink; 6. a first positioning hole; 7. fixing the column; 8. a wiring hole; 9. and a conductive post.
Detailed Description
The present application will be described in further detail with reference to fig. 1 to 6.
Example 1:
The utility model provides a planar transformer, refer to fig. 1 and 2, including last magnetic core 1, lower magnetic core 2, a plurality of primary coil 3, a plurality of secondary coil 4 and auxiliary mounting frame 5, a plurality of mounting groove 51 has been seted up on the auxiliary mounting frame 5, auxiliary mounting frame 5 is run through along auxiliary mounting frame 5 thickness direction to mounting groove 51, a plurality of mounting groove 51 is along auxiliary mounting frame 5 length direction even interval setting, primary coil 3 and secondary coil 4 are the coil of etching on the PCB board, primary coil 3 and secondary coil 4 all overlap in proper order along auxiliary mounting frame 5's length direction and set up, primary coil 3 and secondary coil 4 all insert in corresponding mounting groove 51, the quick installation of primary coil 3 and secondary coil 4 has been realized.
Referring to fig. 3, the upper magnetic core 1 includes a first insertion post 11, a first docking post 12 and a second docking post 13, the first docking post 12 and the second docking post 13 are symmetrically disposed at both sides of the insertion post, and the first docking post 12 and the second docking post 13 are disposed at both sides of the first insertion post 11 at intervals; the lower magnetic core 2 comprises a second plug-in post 21, a third butt-joint post 22 and a fourth butt-joint post 23, and the lower magnetic core 2 has the same structure as the upper magnetic core 1.
Referring to fig. 3, the auxiliary mounting frame 5 is provided with relief holes 52 along two sides of its length direction, the relief holes 52 on the two sides are coaxially arranged, and the relief holes 52 on the two sides penetrate through the side walls of the corresponding auxiliary mounting frame 5; when the upper magnetic core 1 and the lower magnetic core 2 are mutually spliced along the length direction of the auxiliary installation frame 5, the first plug-in column 11 and the second plug-in column 21 are in plug-in fit with the corresponding abdication hole 52, so that the coaxiality of the first plug-in column 11 and the second plug-in column 21 is ensured, and the positioning accuracy of the upper magnetic core 1 and the lower magnetic core 2 is further improved.
Referring to fig. 3, a limit groove 53 is formed in the peripheral side surface of the auxiliary mounting frame 5, the limit groove 53 is formed around the surface of the auxiliary mounting frame 5, when the upper magnetic core 1 and the lower magnetic core 2 are mutually spliced, the upper magnetic core 1 and the lower magnetic core 2 are matched with the corresponding limit groove 53 in a clamping manner, the first butt joint column 12 and the third butt joint column 22 are inserted into the corresponding limit groove 53, the second butt joint column 13 and the fourth butt joint column 23 are inserted into the corresponding limit groove 53, the limit groove 53 is arranged to limit the upper magnetic core 1 and the lower magnetic core 2, and the upper magnetic core 1 and the lower magnetic core 2 are prevented from sliding along the length direction of the auxiliary mounting frame 5 in the splicing process of the upper magnetic core 1 and the lower magnetic core 2, so that the upper magnetic core 1 and the lower magnetic core 2 are prevented from being aligned or moving.
Referring to fig. 2 and 4, the primary coil 3 and the secondary coil 4 are provided with a plurality of first positioning holes 6 in a penetrating manner along the thickness direction of the primary coil and the secondary coil, the auxiliary mounting frame 5 is provided with a plurality of second positioning holes 54, the first positioning holes 6 and the second positioning holes 54 are axially parallel to each other, and the second positioning holes 54 penetrate through the auxiliary mounting frame 5; when the primary coil 3 and the secondary coil 4 are mounted in the corresponding mounting grooves 51, the corresponding first positioning holes 6 on all the primary coils 3 are coaxially arranged, the corresponding first positioning holes 6 on all the secondary coils 4 are coaxially arranged, and the first positioning holes 6 on the primary coils 3 and the corresponding first positioning holes 6 on the secondary coils 4 are coaxially arranged with the corresponding second positioning holes 54.
Referring to fig. 2 and 4, the fixing posts 7 are axially slidably inserted into the second positioning holes 54 along the second positioning holes 54, and when the primary coil 3 and the secondary coil 4 are mounted in the corresponding mounting grooves 51, the fixing posts 7 axially sequentially pass through the first positioning holes 6 on all the primary coils 3 and the secondary coils 4, so as to position the primary coils 3 and the secondary coils 4.
Referring to fig. 2 and 4, the second positioning holes 54 are formed on the bottom surfaces of the limiting grooves 53 along the two sides of the auxiliary mounting frame 5 in the length direction, and after the upper magnetic core 1 and the lower magnetic core 2 are mounted, the upper magnetic core 1 and the lower magnetic core 2 can limit the fixing columns 7, so that the mounting stability is increased.
Referring to fig. 2 and 5, the auxiliary mounting frame 5 is provided with a plurality of locking assemblies 55 along both sides of its length direction, the locking assemblies 55 include a first sliding column 551, a second sliding column 552 and a pressing plate 553, the first sliding column 551 and the second sliding column 552 are axially parallel to each other, and the first sliding column 551 and the second sliding column 552 are disposed at a side of the pressing plate 553 facing the auxiliary mounting frame 5 along a thickness direction of the auxiliary mounting frame 5 at intervals.
Referring to fig. 2 and 5, a plurality of sliding grooves 554 are formed in both sides of the auxiliary mounting frame 5 along the length direction thereof, and the first sliding column 551 and the second sliding column 552 are slidably matched with the corresponding sliding grooves 554, so that after the first sliding column 551 and the second sliding column 552 are slidably inserted into the corresponding sliding grooves 554, the upper magnetic core 1 and the lower magnetic core 2 are mutually abutted against the corresponding pressing plates 553, the upper magnetic core 1 and the lower magnetic core 2 are limited, and the mounting stability is increased.
Referring to fig. 2 and 5, a plurality of locking holes 555 are formed in the pressing plate 553 in a penetrating manner along the thickness direction of the pressing plate 553, locking bolts 556 are connected in the locking holes 555 in a threaded manner, one ends of the locking bolts 556 can be mutually abutted against the upper magnetic core 1 and the lower magnetic core 2 by screwing the locking bolts 556, and accordingly the fixing effect of the pressing plate 553 on the upper magnetic core 1 and the lower magnetic core 2 is improved.
Referring to fig. 1 and 4, a plurality of wire connecting holes 8 are formed in the primary coil 3 and the secondary coil 4 along the thickness direction of the primary coil 3 and the secondary coil 4, wire connecting terminals in the primary coil 3 and the secondary coil 4 are respectively connected with the inner walls of the corresponding wire connecting holes 8, the wire connecting holes 8 in the plurality of primary coils 3 are coaxially arranged in a one-to-one correspondence manner along the axial direction of the wire connecting holes 8, the wire connecting holes 8 in the plurality of secondary coils 4 are coaxially arranged in a one-to-one correspondence manner along the axial direction of the wire connecting holes 8 in the plurality of primary coils 3 and the wire connecting holes 8 in the plurality of secondary coils 4, conductive columns 9 are inserted into the wire connecting holes 8 in the plurality of primary coils 3 and the wire connecting holes 8 in the plurality of secondary coils 4, the mutual communication between the plurality of primary coils 3 and the mutual communication between the plurality of secondary coils 4 are realized, and meanwhile, the arrangement of the conductive columns 9 is convenient for external wiring.
Referring to fig. 1 and 6, a binding post 56 is provided on one side of the auxiliary mounting frame 5, a plurality of connection holes 561 are axially and penetratingly provided on the binding post 56 along the wiring hole 8, the plurality of connection holes 561 and the corresponding wiring holes 8 are coaxially arranged one by one, one end of the conductive post 9 is inserted into the corresponding connection hole 561, and the arrangement of the binding post 56 facilitates the wiring of an external lead and the corresponding conductive post 9.
Referring to fig. 1 and 6, a plurality of fixing holes 562 are formed in the binding post 56, the fixing holes 562 are arranged in one-to-one correspondence with the wiring holes 8, the fixing holes 562 are communicated with the corresponding wiring holes 8, the fixing holes 562 are arranged perpendicular to the axis direction of the wiring holes 8, fixing bolts 563 are connected to the inner wall of the fixing holes 562 through threads, the fixing bolts 563 are convenient for fixing the conductive columns 9, and meanwhile, quick connection between an external wire and the conductive columns 9 can be achieved through the fixing bolts 563.
Referring to fig. 1 and 6, the terminal 56 is provided with two in one side of auxiliary mounting frame 5, and two terminal 56 are provided along auxiliary mounting frame 5 length direction interval for conductive post 9 both ends homoenergetic is fixed in corresponding connecting hole 561, and the wiring of convenient conductive post 9 also increases conductive post 9's steadiness, makes planar transformer both ends homoenergetic simultaneously and wiring.
Referring to fig. 2, a plurality of heat dissipation grooves 57 are formed in the auxiliary mounting frame 5, two adjacent heat dissipation grooves 57 are arranged on two sides of the corresponding mounting groove 51 along the length direction of the auxiliary mounting frame 5 at intervals, the two adjacent heat dissipation grooves 57 are communicated with the mounting groove 51, the distance between two opposite side walls of the heat dissipation grooves 57 is smaller than the distance between two opposite side walls of the mounting groove 51, the mounting space of the primary coil 3 and the secondary coil 4 is ensured, and the effective heat dissipation of the primary coil 3 and the secondary coil 4 is also ensured.
The implementation principle of the embodiment of the application is as follows: the upper magnetic core 1, the lower magnetic core 2, the primary coil 3 and the secondary coil 4 are all installed in the auxiliary installation frame 5, so that the upper magnetic core 1, the lower magnetic core 2, the primary coil 3 and the secondary coil 4 are not in direct contact, the upper magnetic core 1, the lower magnetic core 2, the primary coil 3 and the secondary coil 4 are locked through the locking assembly 55, the limiting groove 53 and the fixing column 7, the situation that the upper magnetic core 1, the lower magnetic core 2, the primary coil 3 and the secondary coil 4 are mutually moved in the moving process of the planar transformer just coated with glue is avoided, and the auxiliary installation frame 5 is arranged so that no additional fixture or tool is needed for auxiliary installation when the planar transformer is manufactured, so that the installation difficulty of the planar transformer is greatly reduced.
A method of manufacturing a planar transformer, comprising the steps of:
S0: the primary coil 3 and the secondary coil 4 are prepared.
S01: the primary coil 3 and the secondary coil 4 are etched on different PCB boards, respectively.
S02: hole processing, namely drilling wiring holes 8 on the corresponding PCB, and ensuring that wiring terminals on the primary coil 3 and the secondary coil 4 are communicated with the corresponding hole walls; corresponding first fixing holes 562 and holes accommodating the installation of the upper and lower cores 1 and 2 are also drilled on the PCB board.
S1: the primary coil 3 and the secondary coil 4 are stacked in order along the length direction of the auxiliary mount 5 and inserted into the corresponding mount grooves 51.
S2: the primary coil 3 and the first positioning hole 6 on the secondary coil 4 are aligned with each other and the second positioning hole 54 on the auxiliary mounting frame 5 are aligned with each other, and the fixing post 7 is inserted into the first positioning hole 6 and the second positioning hole 54.
S3: the lower core 2 is fitted and the locking assembly 55 is installed, and the locking bolt 556 is screwed to lock the lower core 2.
S4: glue is applied to the lower core 2.
S5: the upper core 1 is installed, and the locking assembly 55 is installed, and the locking bolt 556 is screwed to lock the upper core 1.
S6: and (5) loading the installed planar transformer into a drying chamber, and drying the glue.
S7: the planar transformer is taken out, the conductive posts 9 are inserted into the wiring holes 8, both ends of the conductive posts 9 are locked with the corresponding wiring posts 56, and then welding is performed to communicate the primary coil 3 and the secondary coil 4 with the corresponding conductive posts 9.
S8: and finishing the manufacture of the planar transformer.
The implementation principle of the embodiment of the application is as follows: the manufacturing of the planar transformer is realized through the components on the auxiliary mounting frame 5, and the fixture and the tool for mounting the planar transformer are not required to be additionally used, so that the mounting precision of the planar transformer is ensured, and the mounting difficulty of the planar transformer is reduced.
Example 2:
a manufacturing method of a planar transformer, the difference between this embodiment and embodiment 1 is that: the primary coil 3 and the secondary coil 4 of the embodiment of the present application are wound with common wires.
S0 comprises the method comprises the following steps:
s01: the wires are wound into a primary coil 3 and a secondary coil 4.
S02: and (3) injection molding, namely coating glue layers on the primary coil 3 and the secondary coil 4, so that the primary coil 3 and the secondary coil 4 form a plate shape capable of being inserted into the mounting groove 51.
S03: drilling holes 8 in the primary coil 3 and the secondary coil 4 so that the terminals of the primary coil 3 and the secondary coil 4 are exposed in the corresponding wire holes 8; corresponding first fixing holes 562 and holes for accommodating the mounting of the upper core 1 and the lower core 2 are drilled in the adhesive layers of the primary coil 3 and the secondary coil 4.
The implementation principle of the embodiment of the application is as follows: the primary coil 3 and the secondary coil 4 etched on the PCB are converted into the primary coil 3 and the secondary coil 4 wound by common wires, so that the application range of the manufacturing method of the planar transformer is increased.
The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (7)
1. The planar transformer is characterized by comprising an upper magnetic core (1), a lower magnetic core (2), a plurality of primary coils (3), a plurality of secondary coils (4) and an auxiliary mounting frame (5), wherein a plurality of mounting grooves (51) are formed in the auxiliary mounting frame (5), and the primary coils (3) and the secondary coils (4) are slidably arranged in the corresponding mounting grooves (51); a limit groove (53) is formed in the peripheral side wall of the auxiliary mounting frame (5), and the upper magnetic core (1) and the lower magnetic core (2) are in clamping fit with the limit groove (53);
The magnetic core assembly comprises an auxiliary mounting frame (5), wherein both side surfaces of the upper magnetic core (1) and the lower magnetic core (2) are respectively provided with a locking assembly (55), the locking assemblies (55) comprise a first sliding column (551), a second sliding column (552) and a pressing plate (553), the first sliding column (551) and the second sliding column (552) are arranged on both sides of the pressing plate (553) at intervals, a plurality of sliding grooves (554) are formed in the auxiliary mounting frame (5), and the first sliding column (551) and the second sliding column (552) are respectively in sliding fit with the corresponding sliding grooves (554);
A plurality of locking holes (555) are formed in the pressing plate (553) in a penetrating mode along the thickness direction of the pressing plate (553), and locking bolts (556) are connected to the inner walls of the locking holes (555) through threads;
A plurality of first positioning holes (6) are formed in the primary coil (3) and the secondary coil (4) in a penetrating manner along the thickness direction of the primary coil and the secondary coil; a plurality of second positioning holes (54) are formed in the auxiliary mounting frame (5), fixing columns (7) are inserted and matched in the second positioning holes (54), and the axes of the first positioning holes (6) and the second positioning holes (54) are parallel to each other; when the primary coil (3) and the secondary coil (4) are both installed in the corresponding installation groove (51), the first positioning holes (6) and the corresponding second positioning holes (54) are coaxially arranged, and the fixing columns (7) axially sequentially penetrate through the corresponding second positioning holes (54) and the corresponding first positioning holes (6).
2. A planar transformer according to claim 1, characterized in that the auxiliary mounting frame (5) is provided with a plurality of heat dissipation grooves (57).
3. The planar transformer according to claim 1, wherein a plurality of wiring holes (8) are formed in the primary coil (3) and the secondary coil (4) in a penetrating manner, a binding post (56) is arranged on one side of the auxiliary mounting frame (5), a plurality of connecting holes (561) are formed in the binding post (56), conductive posts (9) are inserted and matched in the connecting holes (561), and the axes of the connecting holes (561) and the wiring holes (8) are parallel to each other; when the primary coil (3) and the secondary coil (4) are installed in the corresponding installation groove (51), a plurality of wiring holes (8) on the primary coil (3) and the corresponding connection holes (561) and a plurality of wiring holes (8) on the secondary coil (4) and the corresponding connection holes (561) are coaxially arranged, and the conductive columns (9) sequentially penetrate through the corresponding wiring holes (8) and the corresponding connection holes (561).
4. A planar transformer according to claim 3, wherein a plurality of fixing holes (562) are formed in one side of the binding post (56), the fixing holes (562) are axially and mutually perpendicular to the connecting holes (561), the plurality of fixing holes (562) are mutually communicated with the plurality of connecting holes (561) in a one-to-one correspondence manner, and fixing bolts (563) are connected to the inner walls of the fixing holes (562) through threads.
5. A planar transformer according to claim 3, wherein two binding posts (56) are arranged on the same side of the auxiliary mounting frame (5), the two binding posts (56) are axially arranged at intervals along the connecting hole (561), a plurality of primary coils (3) and a plurality of secondary coils (4) are respectively arranged between the two binding posts (56), and two ends of the conductive post (9) are respectively inserted into the two binding posts (56).
6. A method of manufacturing a planar transformer according to any one of claims 1 to 5, comprising the steps of: s1: the primary coil (3) and the secondary coil (4) are correspondingly inserted into the auxiliary mounting frame (5); s2: a fixed primary coil (3) and a secondary coil (4); s3: loading the lower magnetic core (2) and locking the lower magnetic core (2); s4: coating glue on the lower magnetic core (2); s5: loading the upper magnetic core (1) and locking the upper magnetic core (1); s6: drying; s7: and taking out the planar transformer.
7. The method of manufacturing a planar transformer according to claim 6, further comprising the step of, prior to step S1: s0: preparing a primary coil (3) and a secondary coil (4); s01: winding a primary coil (3) and a secondary coil (4); s02: injection molding, wherein an adhesive layer is coated outside the primary coil (3) and the secondary coil (4); s03: drilling holes are drilled in the primary coil (3) and the secondary coil (4), and terminals of the corresponding primary coil (3) and secondary coil (4) are exposed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310253769.3A CN116453829B (en) | 2023-03-15 | 2023-03-15 | Planar transformer and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310253769.3A CN116453829B (en) | 2023-03-15 | 2023-03-15 | Planar transformer and manufacturing method thereof |
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| CN116453829B true CN116453829B (en) | 2024-04-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM362499U (en) * | 2009-03-25 | 2009-08-01 | Li Shin Internat Entpr Corp | Planar Transformer |
| CN207338093U (en) * | 2017-09-01 | 2018-05-08 | 共青城晟鑫电子有限公司 | A kind of stable transformer of magnetic core installation |
| CN214796996U (en) * | 2021-04-25 | 2021-11-19 | 浙江德力西电器有限公司 | Transformer structure |
| CN216054174U (en) * | 2021-10-26 | 2022-03-15 | 肇庆市新科迪电子科技有限公司 | Flat electronic transformer easy to dissipate heat |
| CN216648031U (en) * | 2022-01-13 | 2022-05-31 | 碧陆斯光电(山东)有限公司 | Electronic transformer with arc-proof function support frame |
-
2023
- 2023-03-15 CN CN202310253769.3A patent/CN116453829B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM362499U (en) * | 2009-03-25 | 2009-08-01 | Li Shin Internat Entpr Corp | Planar Transformer |
| CN207338093U (en) * | 2017-09-01 | 2018-05-08 | 共青城晟鑫电子有限公司 | A kind of stable transformer of magnetic core installation |
| CN214796996U (en) * | 2021-04-25 | 2021-11-19 | 浙江德力西电器有限公司 | Transformer structure |
| CN216054174U (en) * | 2021-10-26 | 2022-03-15 | 肇庆市新科迪电子科技有限公司 | Flat electronic transformer easy to dissipate heat |
| CN216648031U (en) * | 2022-01-13 | 2022-05-31 | 碧陆斯光电(山东)有限公司 | Electronic transformer with arc-proof function support frame |
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| CN116453829A (en) | 2023-07-18 |
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