CN215578104U

CN215578104U - Flat-plate transformer with good protection effect

Info

Publication number: CN215578104U
Application number: CN202121560130.2U
Authority: CN
Inventors: 吴忠淳; 陈金炬; 林峰超
Original assignee: Fujian Hongtaida Technology Co ltd
Current assignee: Fujian Hongtaida Technology Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-01-18
Anticipated expiration: 2031-07-09

Abstract

The utility model provides a flat transformer with good protection effect, which comprises: the base, the both sides of base have been inside to be seted up the mounting hole, and the upper end both sides of base are provided with the side heating panel, the inboard of side heating panel is provided with down the iron core, and the upper end of iron core is provided with the iron core down to the upper end of going up the iron core is provided with the upper cover heating panel, go up the iron core and be provided with the insulating piece down between the iron core, and be provided with the winding copper sheet between the intermediate layer of insulating piece, the outside of winding copper sheet is connected with the protection subassembly, and the lower extreme is provided with upper junction plate and connecting plate respectively about the outside of protection subassembly. The utility model solves the problems that the winding copper sheet is easy to damage in a direct connection mode adopted by the existing flat-plate transformer winding copper sheet, the internal heat dissipation effect is poor, the winding copper sheet is easy to accelerate oxidation due to high-temperature operation, the direct-current copper resistance is increased, and the internal conduction rate of the winding copper sheet is reduced.

Description

Flat-plate transformer with good protection effect

Technical Field

The utility model relates to the technical field of transformers, in particular to a flat transformer with a good protection effect.

Background

Compared with the traditional framework transformer, the planar transformer which uses the existing printed circuit board manufacturing technology and realizes the novel process structure of the planar winding of the transformer and even the coil assembly has great advantages in the aspect of improving the characteristics of the switching power supply, and compared with the traditional transformer, the planar transformer has the characteristics of good coupling performance between windings, high efficiency and small magnetic leakage.

However, in order to facilitate connection, a general part of a planar winding copper sheet of the conventional flat transformer extends outside the protective shell and the iron core, and the extending part is directly connected in a punching or welding mode.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, a planar transformer with a good protection effect is provided so as to solve the problems that the winding copper sheet is easily damaged in a direct connection mode adopted by the winding copper sheet of the conventional planar transformer, the internal heat dissipation effect is poor, the winding copper sheet is easily oxidized in a high-temperature operation mode, the direct-current copper resistance is increased, and the internal conduction rate of the winding copper sheet is reduced.

In order to realize above-mentioned purpose, provide a planar transformer that protecting effect is good, include:

the base, the both sides of base have been inside to be seted up the mounting hole, and the upper end both sides of base are provided with the side heating panel, the inboard of side heating panel is provided with down the iron core, and the upper end of iron core is provided with the iron core down to the upper end of going up the iron core is provided with the upper cover heating panel, go up the iron core and be provided with the insulating piece down between the iron core, and be provided with the winding copper sheet between the intermediate layer of insulating piece, the outside of winding copper sheet is connected with the protection subassembly, and the lower extreme is provided with upper junction plate and connecting plate respectively about the outside of protection subassembly.

Further, the upper cover heat dissipation plate is fixed with the side heat dissipation plate in a threaded manner, the side heat dissipation plate is fixed with the base in a threaded manner, and heat-conducting silicone grease is coated on the inner sides of the upper cover heat dissipation plate and the side heat dissipation plate and the contact surfaces of the upper iron core and the lower iron core.

Further, the middle part of going up the iron core is provided with the cylinder arch to the inboard, and sets up the recess that corresponds with the cylinder in the middle part of iron core down to cylinder arch and insulating piece and winding copper sheet center plug-in connection, and inside the recess was inserted to bellied bottom.

Furthermore, the protection component is provided with an upper clamping block, a middle partition plate and a lower clamping block, a first connecting hole is formed in the middle of the upper clamping block, and a second connecting hole and a third connecting hole which vertically correspond to the first connecting hole are formed in the middle of the middle partition plate and the lower clamping block respectively.

Furthermore, the outer side of the protection component is provided with a connecting end, the middle of the connecting end is provided with a through hole, and the upper connecting plate and the lower connecting plate are respectively fixed on the upper surface and the lower surface of the connecting end.

Further, the upper end of upper junction plate is provided with the wiring end of square structure, and the inside screw hole that runs through the upper junction plate that opens of wiring end to set up the screw hole that corresponds and unidimensional with the upper junction plate position in the inside of lower connecting plate, and the lower extreme of lower connecting plate is provided with the fin of aluminium oxide material, and upper junction plate and lower connecting plate pass through bolted connection fixedly.

Furthermore, a gap layer is arranged among the upper clamping block, the middle partition plate and the lower clamping block of the winding copper sheet, the winding copper sheet is inserted into the gap layer, a copper rod is arranged to penetrate through the three connecting holes and penetrate through the winding copper sheet, and an upper soldering point and a lower soldering point are respectively arranged at the upper end and the lower end of the copper rod.

The flat transformer with good protection effect has the advantages that the upper cover plate heat dissipation plate and the side face heat dissipation plate are utilized, heat inside the transformer is effectively transferred and led out, internal heat dissipation is accelerated, the winding copper sheets are indirectly connected with external parts through the internal structure of the protection assembly, the winding copper sheets at the connection positions are wrapped and protected, damage probability is reduced, a plurality of connection ends can be expanded, and overall practicability is improved.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a planar transformer with a good protection effect according to an embodiment of the present invention.

FIG. 2 is a schematic side view of the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a protection component according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a split structure of the upper and lower connection plates according to the embodiment of the present invention.

1. A base; 2. mounting holes; 3. an upper cover heat dissipation plate; 4. an upper iron core; 5. an insulating sheet; 6. a winding copper sheet; 7. a protection component; 71. an upper clamping block; 72. a first connection hole; 73. a middle partition plate; 74. a second connection hole; 75. a lower clamping block; 76. a third connection hole; 77. a through hole; 78. a connecting end; 8. a side heat dissipation plate; 9. an upper connecting plate; 10. a lower connecting plate; 11. a lower iron core; 12. soldering tin points are arranged; 13. a copper bar; 14. lower soldering tin points; 15. a bolt; 16. a terminal; 17. and a heat sink.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Fig. 2 is a schematic side view of a protection device according to an embodiment of the present invention, fig. 3 is a schematic structural view of a protection device according to an embodiment of the present invention, and fig. 4 is a schematic structural view of an upper and lower connection plates according to an embodiment of the present invention.

Referring to fig. 1 to 4, the present invention provides a planar transformer with a good protection effect, including: upper cover heat dissipation plate 3, side heat dissipation plate 8, protection component 7, upper connecting plate 9 and lower connecting plate 10.

Specifically, mounting hole 2 has been seted up to base 1's both sides inside, and base 1's upper end both sides are provided with side heating panel 8, side heating panel 8's inboard is provided with down iron core 11, and the upper end of iron core 11 is provided with iron core 4 down, and the upper end of going up iron core 4 is provided with upper cover heating panel 3, go up iron core 4 and be provided with insulating piece 5 down between the iron core 11, and be provided with winding copper sheet 6 between the intermediate layer of insulating piece 5, the outside of winding copper sheet 6 is connected with protection component 7, and the lower extreme is provided with upper junction plate 9 and lower connecting plate 10 respectively on protection component 7's the outside.

In the embodiment, the mounting hole 2 facilitates the mounting and fixing of the transformer and the circuit board; the insulation sheet 5 and the winding copper sheet 6 are tightly attached and connected, and positioning holes are formed in the insulation sheet 5 and the winding copper sheet 6; the upper connecting plate 9 and the lower connecting plate 10 form a clamping structure for the expansion connecting end 78 of the protection component 7, and the connection stability is improved.

In this embodiment, the upper cover heat dissipation plate 3 is screwed and fixed with the side heat dissipation plate 8, the side heat dissipation plate 8 is screwed and fixed with the base 1, and the contact surfaces of the inner sides of the upper cover heat dissipation plate 3 and the side heat dissipation plate 8 and the upper iron core 4 and the lower iron core 11 are coated with heat conductive silicone grease.

As a preferred implementation mode, the heat-conducting silicone grease is convenient for the heat conduction inside the transformer, and enhances the bonding strength between the upper cover heat dissipation plate 3 and the side heat dissipation plate 8 and the iron core, and the heat dissipation inside the flat-plate transformer is accelerated through the upper cover heat dissipation plate 3 and the side heat dissipation plate 8 which are made of the electroplated aluminum material.

In this embodiment, the middle part of the upper iron core 4 is provided with a cylindrical protrusion towards the inner side, the middle part of the lower iron core 11 is provided with a groove corresponding to the cylindrical protrusion, the cylindrical protrusion is in plug-in connection with the centers of the insulating sheet 5 and the winding copper sheet 6, and the bottom end of the protrusion is inserted into the groove.

As a preferred embodiment, the inner side of the upper iron core 4 is protruded to facilitate the positioning and installation of the insulation sheet 5 and the winding copper sheet 6, and to facilitate the stable insertion with the lower iron core 11.

In this embodiment, the protection assembly 7 includes an upper clamping block 71, a middle partition plate 73 and a lower clamping block 75, a first connection hole 72 is formed in the middle of the upper clamping block 71, and a second connection hole 74 and a third connection hole 76 vertically corresponding to the first connection hole 72 are respectively formed in the middle of the middle partition plate 73 and the lower clamping block 75.

As a preferred embodiment, the protection component 7 is made of a metal copper material, so as to facilitate the external connection and conduction of the transformer, and the vertical correspondence of the three connection holes facilitates the vertical insertion of the copper rod 13.

In this embodiment, the outer side of the protection component 7 is provided with a connecting end 78, a through hole 77 is opened in the middle of the connecting end 78, and the upper connecting plate 9 and the lower connecting plate 10 are respectively fixed on the upper and lower surfaces of the connecting end 78.

In a preferred embodiment, the upper and

lower connection plates

9, 10 are of uniform dimensions and thickness and are connected parallel to each other.

In this embodiment, the upper end of the upper connecting plate 9 is provided with a terminal 16 having a square structure, a threaded hole penetrating through the upper connecting plate 9 is opened inside the terminal 16, a threaded hole having the same size and corresponding to the position of the upper connecting plate 9 is opened inside the lower connecting plate 10, a heat sink 17 made of alumina is provided at the lower end of the lower connecting plate 10, and the upper connecting plate 9 and the lower connecting plate 10 are connected and fixed by a bolt 15.

Specifically, through wiring end 16 and bolt 15 of upper end of upper junction plate 9, be convenient for with the dismouting of outside electrical part, compare in direct at winding copper sheet 6 dismouting spiro union, the great degree reduces the damage of winding copper sheet 6, and through the fin 17 of aluminium oxide material, has strengthened the radiating effect of link 78, the effectual inside high heat that has reduced is to the influence between the connecting piece.

In this embodiment, a gap layer is disposed between the upper clamping block 71, the middle partition plate 73 and the lower clamping block 75 of the winding copper sheet 6, the winding copper sheet 6 is inserted into the gap layer, and a copper rod 13 is disposed to penetrate through the three connecting holes and the winding copper sheet 6, and the upper end and the lower end of the copper rod 13 are respectively provided with an upper soldering point 12 and a lower soldering point 14.

As a preferred embodiment, after the copper rod 13 is inserted into the protection component 7 and the winding copper sheet 6, the upper and lower ends are provided with the upper solder points 12 and the lower solder points 14 by a welding process, so that the copper rod 13 is stably limited, and the protection component 7 is stably connected with the winding copper sheet 6.

The flat transformer with good protection effect can effectively solve the problems that the winding copper sheet is easy to damage in a direct connection mode adopted by the existing flat transformer winding copper sheet, the internal heat dissipation effect is poor, the winding copper sheet is easy to accelerate oxidation due to high-temperature operation, the direct current copper resistance is increased, and the internal conduction rate of the winding copper sheet is reduced.

Claims

1. The utility model provides a planar transformer that protecting effect is good which characterized in that includes: base (1), mounting hole (2) have been seted up to the both sides of base (1) inside, and the upper end both sides of base (1) are provided with side heating panel (8), the inboard of side heating panel (8) is provided with down iron core (11), and the upper end of iron core (11) is provided with iron core (4) down to the upper end of going up iron core (4) is provided with upper cover heating panel (3), it is provided with insulating piece (5) down between iron core (4) and iron core (11), and is provided with winding copper sheet (6) between the intermediate layer of insulating piece (5), the outside of winding copper sheet (6) is connected with protection component (7), and the lower extreme is provided with upper junction plate (9) and lower connecting plate (10) respectively on the outside of protection component (7).

2. The planar transformer with good protection effect according to claim 1, wherein the upper cover heat dissipation plate (3) is fixed with the side heat dissipation plate (8) in a threaded manner, the side heat dissipation plate (8) is fixed with the base (1) in a threaded manner, and contact surfaces of the inner sides of the upper cover heat dissipation plate (3) and the side heat dissipation plate (8) and the upper iron core (4) and the lower iron core (11) are coated with heat-conducting silicone grease.

3. The planar transformer with good protection effect according to claim 1, wherein the middle part of the upper iron core (4) is provided with a cylindrical protrusion facing the inside, the middle part of the lower iron core (11) is provided with a groove corresponding to the cylinder, the cylindrical protrusion is connected with the insulation sheet (5) and the winding copper sheet (6) in a plugging manner, and the bottom end of the protrusion is inserted into the groove.

4. The planar transformer with good protection effect according to claim 1, wherein the protection assembly (7) comprises an upper clamping block (71), a middle partition plate (73) and a lower clamping block (75), a first connecting hole (72) is formed in the middle of the upper clamping block (71), and a second connecting hole (74) and a third connecting hole (76) which vertically correspond to the first connecting hole (72) are formed in the middle of the middle partition plate (73) and the lower clamping block (75) respectively.

5. The planar transformer with good protection effect according to claim 1, wherein the outer side of the protection component (7) is provided with a connecting end (78), the middle part of the connecting end (78) is provided with a through hole (77), and the upper connecting plate (9) and the lower connecting plate (10) are respectively fixed on the upper surface and the lower surface of the connecting end (78).

6. The planar transformer with good protection effect according to claim 1, wherein a terminal (16) with a cube structure is arranged at the upper end of the upper connecting plate (9), a threaded hole penetrating through the upper connecting plate (9) is formed in the terminal (16), a threaded hole with the same size corresponding to the position of the upper connecting plate (9) is formed in the lower connecting plate (10), a radiating fin (17) made of alumina is arranged at the lower end of the lower connecting plate (10), and the upper connecting plate (9) and the lower connecting plate (10) are fixedly connected through a bolt (15).

7. The planar transformer with good protection effect according to claim 1, wherein a gap layer is arranged among the upper clamping block (71), the middle partition plate (73) and the lower clamping block (75) of the winding copper sheet (6), the winding copper sheet (6) is inserted into the gap layer, a copper rod (13) is arranged to penetrate through the three connecting holes and penetrate through the winding copper sheet (6), and the upper end and the lower end of the copper rod (13) are respectively provided with an upper soldering tin point (12) and a lower soldering tin point (14).