CN218182022U

CN218182022U - Planar transformer with good insulation performance

Info

Publication number: CN218182022U
Application number: CN202222294166.1U
Authority: CN
Inventors: 张朝勇
Original assignee: Shenzhen Longshun Electronics Co ltd
Current assignee: Shenzhen Longshun Electronics Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-12-30
Anticipated expiration: 2032-08-30

Abstract

The utility model relates to the technical field of planar transformers, the utility model discloses a planar transformer with good insulating property, which comprises a first magnetic core block and a second magnetic core block which are oppositely arranged, wherein one surface of the second magnetic core block facing the first magnetic core block is provided with a magnetic column, a PCB board and an insulating sheet which are sequentially stacked are arranged between the first magnetic core block and the second magnetic core block, the two end surfaces of the insulating sheet are provided with a plurality of first radiating grooves along the length direction of the insulating sheet, and two sides of the inner wall of each first radiating groove are provided with second radiating grooves; the utility model discloses simple structure, because PCB board and insulating piece pile up the setting in proper order, then can improve this planar transformer's insulating properties to the convection action of air between the PCB board can be improved to first radiating groove and the second radiating groove of opening on the insulating piece, improves the radiating effect that the air flows, can be with the heat fast dispersion of PCB board work production, thereby ensures planar transformer's work safety and reliable.

Description

Planar transformer with good insulation performance

Technical Field

The utility model relates to a planar transformer technical field specifically is a planar transformer that insulating properties is good.

Background

The planar transformer is a planar structure transformer developed for a long time from an electronic transformer, compared with the traditional transformer, the planar transformer is mainly characterized in that an iron core and a coil winding are different, the planar transformer winding is formed by etching copper foil on a PCB board in a spiral superposition mode through a PCB board manufacturing process, and the copper foil and a high-frequency magnetic core form a magnetic loop of the transformer.

Through retrieval, in chinese patent application No. 201922293315.0, a high-voltage planar transformer is disclosed, comprising an insulating plate, a magnetic core, a plurality of primary coil assemblies and a plurality of secondary coil assemblies, wherein the magnetic core is fixed on the insulating plate, at least part of the primary coil assemblies and/or part of the secondary coil assemblies comprise a coil printed circuit board and a coil, the coil printed circuit board is provided with a through hole for a central column of the magnetic core to pass through, the coil is wound on the coil printed circuit board by taking the through hole as a center, and two ends of the coil are provided with bonding pads; the secondary coil assemblies are sleeved on the middle columns of the magnetic cores, and a primary coil assembly is clamped between every two adjacent secondary coil assemblies; and the bonding pads of the coils are mutually connected and then fixed on the insulating plate. The utility model discloses a high-voltage plane transformer has advantages such as simple structure, small and insulating voltage grade height.

However, the insulation board is not disposed between the circuit boards in this patent, which results in poor insulation between the circuit boards, thereby affecting the normal operation of the planar transformer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a planar transformer that insulating properties is good to do not set up the insulation board between circuit board and the circuit board in solving this patent, lead to the insulating nature between circuit board and the circuit board relatively poor, thereby can influence the problem of planar transformer normal work.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a planar transformer that insulating properties is good, includes two relative first magnetic core pieces and the second magnetic core piece that sets up, the second magnetic core piece orientation be provided with the magnetic column in the one side of first magnetic core piece, be equipped with between first magnetic core piece and the second magnetic core piece and pile up PCB board and the insulating piece that sets up in proper order, insulating piece both ends surface is followed insulating piece length direction has seted up the first radiating groove of a plurality of, the second radiating groove has been seted up to first radiating groove inner wall both sides.

Preferably, the PCB board and the insulating sheet are fixedly connected through a connecting column.

Preferably, the bottom end of the first magnetic core block is fixedly provided with an installation plate.

Preferably, a plurality of through holes are formed in the surface of the first radiating groove along the length direction of the insulating sheet.

Preferably, the opening direction of the through hole is perpendicular to the opening direction of the first heat dissipation groove.

Preferably, the cross-sectional shape of the second heat dissipation groove is any one of a square shape and a semicircular shape.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses simple structure, because PCB board and insulating piece pile up the setting in proper order, then can improve this planar transformer's insulating properties to the convection action of air between the PCB board can be improved to first radiating groove and the second radiating groove of opening on the insulating piece, improves the radiating effect that the air flows, can be with the heat fast dispersion of PCB board work production, thereby ensures planar transformer's work safety and reliable.

Drawings

Fig. 1 is a schematic view of the overall structure of the planar transformer with good insulation performance;

fig. 2 is a perspective view of an insulation sheet of the planar transformer with good insulation performance;

fig. 3 is a front view of an insulation sheet of the planar transformer with good insulation performance;

fig. 4 is an enlarged structural diagram of a in fig. 3.

In the figure: 10-a first magnetic core block; 20-a second magnetic core block; 30-mounting a plate; 40-connecting column; 50-a PCB board; 60-an insulating sheet; 61-first heat sink; 62-a through hole; 63-second heat sink.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a planar transformer that insulating properties is good, including two first magnetic core block 10 and the second magnetic core block 20 of relative fixed mounting, second magnetic core block 20 is provided with the magnetic column in the one side towards first magnetic core block 10, be equipped with between first magnetic core block 10 and the second magnetic core block 20 and pile up PCB board 50 and the insulating piece 60 that sets up in proper order, because PCB board 50 and insulating piece 60 pile up the setting in proper order, then can improve this planar transformer's insulating properties, insulating piece 60 both ends surface has seted up the first radiating groove 61 of a plurality of along insulating piece 60 length direction, second radiating groove 63 has been seted up to first radiating groove 61 inner wall both sides, the cross sectional shape of second radiating groove 63 is square and any one of semicircular.

Further, the first heat dissipation groove 61 and the second heat dissipation groove 63 formed on the insulating sheet can improve the convection effect of air between the PCB boards 50, improve the heat dissipation effect of air flow, and can quickly disperse heat generated by the PCB board operation.

In the preferred technical scheme of this embodiment, the PCB 50 and the insulating sheet 60 are fixedly connected through the connecting column 40, the connecting column 40 is made of insulating resin, and the connecting column 40 can improve the connection strength between the PCB 50 and the insulating sheet 60 and can also improve the insulation of the PCB 50.

In a preferred embodiment of the present invention, the mounting plate 30 is fixedly mounted at the bottom end of the first magnetic core block 10, and the mounting plate 30 is an insulating plate, so that the insulating performance of the planar transformer can be further improved.

In the preferred technical solution of this embodiment, a plurality of through holes 62 are opened on the surface of the first heat dissipation groove 61 along the length direction of the insulation sheet 60, the opening direction of the through holes 62 is perpendicular to the opening direction of the first heat dissipation groove 61, and the through holes 62 enable the two first heat dissipation grooves 61 on the insulation sheet 60 to be communicated with each other, so that each first heat dissipation groove 61 is communicated with each other, and a better convection effect of air is achieved.

The working principle is as follows: when the heat dissipation structure is used, the first heat dissipation grooves 61 and the second heat dissipation grooves 63 formed in the insulating sheet can improve the convection effect of air between the PCB boards 50, improve the heat dissipation effect of air flowing and quickly disperse heat generated by the PCB board in operation.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, which can not limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a planar transformer that insulating properties is good, includes two relative first magnetic core piece (10) and second magnetic core piece (20) that set up, second magnetic core piece (20) orientation be provided with the magnetic column on the one side of first magnetic core piece (10), be equipped with between first magnetic core piece (10) and the second magnetic core piece (20) and pile up PCB board (50) and the insulating piece (60) that set up in proper order, its characterized in that: insulating piece (60) both ends surface is followed insulating piece (60) length direction has seted up first radiating groove of a plurality of (61), second radiating groove (63) have been seted up to first radiating groove (61) inner wall both sides.

2. The planar transformer with good insulation performance according to claim 1, wherein: the PCB (50) and the insulating sheet (60) are fixedly connected through a connecting column (40).

3. The planar transformer with good insulation performance according to claim 1, wherein: and the bottom end of the first magnetic core block (10) is fixedly provided with an installation plate (30).

4. The planar transformer with good insulation performance according to claim 1, wherein: a plurality of through holes (62) are formed in the surface of the first radiating groove (61) along the length direction of the insulating sheet (60).

5. The planar transformer with good insulation performance according to claim 4, wherein: the opening direction of the through hole (62) is perpendicular to the opening direction of the first heat dissipation groove (61).

6. The planar transformer with good insulation performance according to claim 1, wherein: the cross section of the second heat dissipation groove (63) is in any one of a square shape and a semicircular shape.