CN212676016U - High-frequency transformer for LLC circuit - Google Patents
High-frequency transformer for LLC circuit Download PDFInfo
- Publication number
- CN212676016U CN212676016U CN202021583120.6U CN202021583120U CN212676016U CN 212676016 U CN212676016 U CN 212676016U CN 202021583120 U CN202021583120 U CN 202021583120U CN 212676016 U CN212676016 U CN 212676016U
- Authority
- CN
- China
- Prior art keywords
- frequency transformer
- top end
- primary
- slot
- bottom plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a high frequency transformer for LLC circuit, including PQ50 bottom plate, high temperature resistant insulating piece and secondary PIN foot, two jacks have been seted up to top one side of PQ50 bottom plate, three first slot has been seted up to the top opposite side of PQ50 bottom plate, the top both sides side of PQ50 bottom plate is provided with the backup pad of two mutual symmetries, the bottom of backup pad is provided with the support frame, the top of PQ50 bottom plate is provided with the high temperature resistant insulating piece of a plurality of groups, the top of high temperature resistant insulating piece is provided with secondary copper sheet, first slot, second slot through connection has secondary PIN foot. The utility model discloses a primary coil adopts the reverse lap-wound stranded self-adhesion three-layer insulated wire of alpha wire-wound mode coiling, has improved the insulating properties between the primary coil, has reduced primary coil's occupation space, then carries out the magnetic conduction through secondary copper sheet and ferrite core, has improved the conversion efficiency of electric energy, makes whole high frequency transformer's work efficiency reach 98%, makes high frequency transformer's loss reduce.
Description
Technical Field
The utility model relates to a magnetic element field specifically is a high frequency transformer for LLC circuit.
Background
The LLC contains a single port network of inductors, capacitors, and resistive elements, and at some operating frequencies, when the phases of the port voltage and current waveforms are the same, the circuit is said to resonate. A circuit that can resonate is called a resonant circuit.
The high-frequency transformer is a power transformer with the working frequency exceeding the intermediate frequency (10kHz), is mainly used as a high-frequency switching power transformer in a high-frequency switching power supply, and is also used as a high-frequency inverter power transformer in a high-frequency inverter power supply and a high-frequency inverter welding machine. According to the working frequency, the method can be divided into several grades: 10kHz-50kHz, 50kHz-100kHz, 100 kHz-500 kHz, 500 kHz-1 MHz and more than 10 MHz.
The conventional high-frequency transformer still has certain defects in the using process, for example, the conventional high-frequency transformer has larger loss and lower working efficiency under the condition of the same output electric quantity. Therefore, we improve the problem and propose a high-frequency transformer for LLC circuit.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a high frequency transformer for LLC circuit, include:
the base plate is characterized by comprising a PQ50 base plate, wherein one side of the top end of the PQ50 base plate is provided with two insertion holes, the other side of the top end of the PQ50 base plate is provided with three first insertion grooves, two symmetrical support plates are arranged on two sides of the top end of the PQ50 base plate, and the bottom ends of the support plates are provided with support frames;
the heat-resistant insulating sheet is characterized in that a plurality of groups of heat-resistant insulating sheets are arranged on the top of the PQ50 bottom plate, a secondary copper sheet is arranged on the top of each heat-resistant insulating sheet, three second slots are formed in the top end, close to one side of each first slot, of each secondary copper sheet, two groups of coils are arranged on the top end of each secondary copper sheet from top to bottom, a primary spacer is arranged between the two groups of coils, and the coils are connected with ferrite cores in a penetrating mode;
and the first slot and the second slot are in through connection with the secondary PIN feet.
As a preferred technical scheme of the utility model, the bottom of PQ50 bottom plate is provided with the gum, PQ50 bottom plate, primary and secondary spacer are FR4, UL 94V 0, and T is made for 1 mm's stainless steel material.
As an optimal technical scheme of the utility model, the bottom surface of high temperature resistant insulating piece is provided with the polyimide sticky tape, polyimide sticky tape thickness is 0.05 mm.
As an optimal technical scheme of the utility model, the coil includes primary and secondary, the primary is the double-deck cake structure of winding of alpha wire winding mode, and the primary adopts the coiling of stranded self-adhesion three-layer insulated wire.
As an optimized technical scheme of the utility model, secondary copper sheet adopts two to establish ties into two circles, secondary copper sheet and secondary coil through connection.
As an optimal technical scheme of the utility model, the top of ferrite core is fixed with two elementary PIN feet, the quantity of elementary PIN foot is two, the quantity of secondary PIN foot is three.
As an optimized technical proposal of the utility model, the surface of the secondary PIN is decorated with an electroplating fog tin coating.
As an optimal technical scheme of the utility model, one side that the top of ferrite core is close to the jack is provided with the draw-in groove, the draw-in groove is connected with the top block of elementary PIN foot, the bottom and the jack through connection of elementary PIN foot.
The utility model has the advantages that: this kind of high frequency transformer for LLC circuit, the reverse lap-wound stranded self-adhesion three-layer insulated wire that winds through primary coil adoption alpha wire-wound mode coiling, and by two-layer winding cake constitution, improved the insulating properties between the primary coil greatly, reduced primary coil's occupation space simultaneously, then carry out the magnetic conduction through secondary copper sheet and ferrite core, improved the conversion efficiency of electric energy after stepping up, make whole high frequency transformer's work efficiency reach 98%, make high frequency transformer's loss reduce.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a high-frequency transformer for an LLC circuit of the present invention;
fig. 2 is a front view of the high-frequency transformer for LLC circuit of the present invention;
fig. 3 is a side view of the high-frequency transformer for LLC circuit of the present invention;
fig. 4 is a schematic structural diagram of a PQ50 bottom plate of a high-frequency transformer for an LLC circuit according to the present invention;
fig. 5 is a schematic structural diagram of a secondary copper sheet of the high-frequency transformer for the LLC circuit.
In the figure: 1. a PQ50 base plate; 101. carrying out gum application; 2. a jack; 3. a first slot; 4. a support plate; 5. a support frame; 6. a high temperature resistant insulating sheet; 7. a secondary copper sheet; 8. a second slot; 9. a coil; 901. a primary coil; 902. a secondary coil; 10. a primary and secondary spacer; 11. a ferrite core; 1101. a card slot; 12. a secondary PIN PIN; 13. a primary PIN leg.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example (b): as shown in fig. 1-5, the utility model relates to a high frequency transformer for LLC circuit, include:
the base plate comprises a PQ50 base plate 1, wherein two jacks 2 are formed in one side of the top end of the PQ50 base plate 1, three first slots 3 are formed in the other side of the top end of the PQ50 base plate 1, two symmetrical supporting plates 4 are arranged on two side sides of the top end of the PQ50 base plate 1, and a supporting frame 5 is arranged at the bottom end of each supporting plate 4;
the high-temperature-resistant insulating sheet 6 is characterized in that a plurality of groups of high-temperature-resistant insulating sheets 6 are arranged at the top of the base plate PQ50 1, a secondary copper sheet 7 is arranged at the top of each high-temperature-resistant insulating sheet 6, three second slots 8 are formed in the top ends of the secondary copper sheets 7 close to one sides of the first slots 3, two groups of coils 9 are arranged above and below the top ends of the secondary copper sheets 7, primary and secondary spacers 10 are arranged between the two groups of coils 9, and the coils 9 are connected with;
and the secondary PIN PINs 12 are connected with the first slot 3 and the second slot 8 in a penetrating way.
Wherein, the bottom of PQ50 bottom plate 1 is provided with gum 101, and PQ50 bottom plate 1, primary spacer 10 are FR4, UL 94V 0, and T is 1 mm's stainless steel material and makes, through setting up gum 101, is convenient for derive the heat of ferrite core 11, then FR4, UL 94V 0, and T is 1 mm's PQ50 bottom plate 1, primary spacer 10 have better fire resistance, have improved high frequency transformer's life greatly.
Wherein, high temperature resistant insulating piece 6's bottom surface is provided with the polyimide sticky tape, and polyimide sticky tape thickness is 0.05mm, has high low temperature resistant, acid and alkali-resistance, resistant solvent, electrical insulation H level, the performance of protecting against radiation through the polyimide sticky tape, avoids high temperature resistant insulating piece 6 to use for a long time and warp, has improved high temperature resistant insulating piece 6's practicality.
The coil 9 comprises a primary coil 901 and a secondary coil 902, the primary coil 901 is of a double-layer winding cake structure in an alpha winding mode, the primary coil 901 is wound by adopting a plurality of self-adhesive three-layer insulated wires, the plurality of self-adhesive three-layer insulated wires are wound in the alpha winding mode, the insulating property of the primary coil 901 is improved, and meanwhile the occupied space of the primary coil 901 is reduced.
The secondary copper sheet 7 is formed by connecting two sheets in series to form two circles, the secondary copper sheet 7 is connected with the secondary coil 902 in a penetrating manner, and by arranging the secondary copper sheet 7, the magnetic permeability of the high-frequency transformer is enhanced, and the conversion rate of electric energy between the primary coil 901 and the secondary coil 902 is improved.
Wherein, the top of ferrite core 11 is fixed with two elementary PIN feet 13, and the quantity of elementary PIN foot 13 is two, and the quantity of secondary PIN foot 12 is three, through the connection between the different secondary PIN feet 12, is convenient for change secondary coil 902 and connects the effective length of circuit to change high frequency transformer's the range of stepping up.
Wherein, the surface of secondary PIN foot 12 is decorated with electroplating fog tin coating, through setting up electroplating fog tin coating, has improved the corrosion resistance of secondary PIN foot 12.
Wherein, the top of ferrite core 11 is provided with draw-in groove 1101 near one side of jack 2, and draw-in groove 1101 is connected with the top block of elementary PIN foot 13, and the bottom and the jack 2 through connection of elementary PIN foot 13 through setting up draw-in groove 1101 and jack 2, the dismantlement and the installation of the elementary PIN foot 13 of being convenient for have reduced high frequency transformer's occupation space after dismantling elementary PIN foot 13.
When the high-voltage frequency converter works, firstly, the high-voltage frequency converter is integrated through the supporting plate 4, the supporting frame 5 and the PQ50 bottom plate 1, the jack 2, the clamping groove 1101 and the primary PIN PIN 13 are connected with each other, the first slot 3, the second slot 8 and the secondary PIN 12 are connected in a clamping way, the ferrite core 11 is connected with the primary coil 901 and the secondary coil 902 in a penetrating way, the magnetic conductivity conversion rate of the whole coil 9 is improved, then the primary coil 901 and the secondary coil 902 are separated by the primary and secondary spacers 10 to avoid mutual contact, then the polyimide glue has better heat resistance to prevent heat generated when the high-frequency transformer works from burning through the high-temperature resistant insulating sheet 6, and then the heat is led out to the PQ50 bottom plate 1 through the back glue 101 to dissipate heat, wherein the primary coil 901 adopts reversely-lapped multi-strand self-adhesive three-layer insulating wires which are wound in an alpha winding way and consists of two layers, the insulating property between the primary coils 901 is improved, meanwhile, the occupied space of the primary coils 901 is reduced, then, the secondary copper sheets 7 and the ferrite magnetic cores 11 conduct magnetism, the conversion efficiency of electric energy after boosting is improved, the working efficiency of the whole high-frequency transformer is improved, and meanwhile, the loss of the high-frequency transformer is reduced.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A high-frequency transformer for LLC circuit, comprising:
the base plate comprises a PQ50 base plate (1), wherein two insertion holes (2) are formed in one side of the top end of the PQ50 base plate (1), three first insertion grooves (3) are formed in the other side of the top end of the PQ50 base plate (1), two symmetrical supporting plates (4) are arranged on two sides of the top end of the PQ50 base plate (1), and a supporting frame (5) is arranged on the top end of each supporting plate (4);
the high-temperature-resistant insulating sheet (6), a plurality of groups of high-temperature-resistant insulating sheets (6) are arranged at the top of the PQ50 bottom plate (1), a secondary copper sheet (7) is arranged at the top of the high-temperature-resistant insulating sheet (6), three second slots (8) are formed in the top end of one side, close to the first slot (3), of the secondary copper sheet (7), two groups of coils (9) are arranged above and below the top end of the secondary copper sheet (7), a primary and secondary spacer (10) is arranged between the two groups of coils (9), and the coils (9) are connected with ferrite cores (11) in a penetrating mode;
and the first slot (3) and the second slot (8) are in through connection with the secondary PIN foot (12).
2. The high frequency transformer for LLC circuit according to claim 1, wherein the base of said PQ50 bottom plate (1) is provided with a back glue (101), and said PQ50 bottom plate (1) and primary and secondary spacers (10) are made of stainless steel material FR4, UL 94V 0, T ═ 1 mm.
3. The high-frequency transformer for LLC circuit according to claim 1, wherein the bottom end surface of said high temperature resistant insulation sheet (6) is provided with polyimide tape, and the thickness of said polyimide tape is 0.05 mm.
4. A high-frequency transformer for LLC circuit as claimed in claim 1, characterized in that said coil (9) comprises a primary coil (901) and a secondary coil (902), said primary coil (901) is a double-layer pancake structure with alpha winding, and the primary coil (901) is wound with multi-strand self-adhesive triple-layer insulated wire.
5. A high frequency transformer for LLC circuit according to claim 4, characterized in that said secondary copper sheet (7) is two sheets connected in series to form two turns, said secondary copper sheet (7) is connected with said secondary coil (902) in a penetrating way.
6. A high frequency transformer for LLC circuits, in accordance with claim 1, characterized in that two primary PIN legs (13) are fixed to the top end of said ferrite core (11), the number of said primary PIN legs (13) being two, the number of said secondary PIN legs (12) being three.
7. A high frequency transformer for LLC circuits, in accordance with claim 1, characterized in that the surface of said secondary PIN (12) is decorated with an electroplated misty tin coating.
8. The high-frequency transformer for the LLC circuit according to claim 1, wherein a slot (1101) is arranged on one side of the top end of the ferrite core (11) close to the jack (2), the slot (1101) is connected with the top end of the primary PIN PIN (13) in a snap-fit manner, and the bottom end of the primary PIN (13) is connected with the jack (2) in a penetrating manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021583120.6U CN212676016U (en) | 2020-08-03 | 2020-08-03 | High-frequency transformer for LLC circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021583120.6U CN212676016U (en) | 2020-08-03 | 2020-08-03 | High-frequency transformer for LLC circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212676016U true CN212676016U (en) | 2021-03-09 |
Family
ID=74820796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021583120.6U Active CN212676016U (en) | 2020-08-03 | 2020-08-03 | High-frequency transformer for LLC circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212676016U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331461A (en) * | 2020-11-03 | 2021-02-05 | 衡山萌泰电子有限公司 | Resonance transformer |
-
2020
- 2020-08-03 CN CN202021583120.6U patent/CN212676016U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331461A (en) * | 2020-11-03 | 2021-02-05 | 衡山萌泰电子有限公司 | Resonance transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103137305B (en) | A kind of transformator conductive structure and transformator | |
| JP5804609B2 (en) | Improved transformer | |
| CN201081806Y (en) | Planar transformer | |
| CN212676016U (en) | High-frequency transformer for LLC circuit | |
| CN101609741A (en) | Transformer device structure and the rectification circuit that is suitable for thereof | |
| CN210378713U (en) | Resonant transformer | |
| CN211907191U (en) | Transformer and power based on primary side fractional turn | |
| CN202977117U (en) | Transformer | |
| CN219246508U (en) | High-power flat energy storage transformer | |
| CN201750348U (en) | Multi-level high-voltage transformer rectifier unit | |
| CN213093002U (en) | Frameless high-frequency transformer | |
| CN211376385U (en) | High-frequency transformer structure applied to double-tube forward topology | |
| CN217562370U (en) | Three-phase three-column amorphous alloy dry-type transformer | |
| CN216250325U (en) | High-frequency isolation or non-isolation transformer | |
| CN214753304U (en) | Line cake structure transformer | |
| CN213635660U (en) | Tower type high-voltage resistant choke coil | |
| CN216648014U (en) | High-voltage transformer coil structure | |
| CN215451128U (en) | Choking coil with good insulation effect | |
| JP5111415B2 (en) | Trance | |
| CN219349955U (en) | Electronic transformer with double high voltage output | |
| CN219418707U (en) | Transformer skeleton of pulse filter | |
| CN216671363U (en) | Adjustable power transformer convenient for coil replacement | |
| CN2747778Y (en) | Modular power source of power system | |
| CN218975259U (en) | Large-current multi-tap single-phase transformer | |
| CN217982990U (en) | Be applied to power equipment combination inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |