Flat transformer

Abstract

The utility model provides a flat transformer which comprises an outer shell, an inner shell arranged in the outer shell, a transformer body arranged in the inner shell, a current-conducting plate fixed in the transformer body, a plurality of binding posts fixed on the current-conducting plate, one end of each binding post located outside the outer shell, and a plurality of copper foil special-shaped sponges fixed between the outer shell and the inner shell. Heat pipes are arranged on the upper side and the lower side of the copper foil special-shaped sponge, a plurality of heat conduction plates are fixed to the peripheral side of the shell, and a plurality of heat dissipation grooves are formed in the heat conduction plates. The inner shell is installed in the outer shell, the transformer body is installed in the inner shell, the transformer body can be sealed through the inner shell, and therefore the good dustproof effect is achieved, the copper foil special-shaped sponge is installed between the outer shell and the inner shell, the heat pipes are installed on the upper side and the lower side of the copper foil special-shaped sponge, and the copper foil special-shaped sponge has good heat conductivity. Meanwhile, certain elasticity is achieved, and a good heat conduction effect can be achieved on the transformer body in the inner shell.

Description

Technical Field

[0001] The utility model relates to the technical field of flat-plate transformers, in particular to a flat-plate transformer. Background Art

[0002] The flat transformer is an innovative trend to achieve thin and high-frequency transformers, and is widely used in various switching power supplies with its many advantages. For example, the patent with the publication number CN216054245U discloses a flat transformer, including an iron core and a coil winding, wherein the coil winding is a torus formed by winding a flat copper coil, a film-wrapped wire and insulating paper, and the iron core is formed by two halves of the same structure, and there is a cylinder in the middle of the iron core, and the coil winding is sleeved on the cylinder. It directly uses a flat copper coil, a film-wrapped wire and insulating paper to form a coil winding to ensure that the hot spots generated by the flat transformer during operation are dispersed and not easily concentrated at one point, so that the flat transformer has a better heat dissipation effect, but the effect of this natural heat dissipation is poor, and external dust is easily contaminated on the coil winding, resulting in heat accumulation on the surface of the coil winding, thereby affecting the service life of the transformer.

[0003] To this end, the utility model provides a flat transformer. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a flat transformer to solve the problems raised in the above-mentioned background technology. The utility model can seal the transformer body, thereby achieving a good dust-proof effect; and can achieve a good thermal conductivity effect on the transformer body, while playing a protective role, and the use of heat pipes can accelerate heat dissipation and improve heat dissipation efficiency.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a flat transformer, comprising an outer shell, an inner shell is installed in the outer shell, a transformer body is installed in the inner shell, a conductive plate is fixed in the transformer body, a plurality of terminals are fixed on the conductive plate, one end of the terminal is located outside the outer shell, a plurality of copper foil shaped sponges are fixed between the outer shell and the inner shell, heat pipes are installed on the upper and lower sides of the copper foil shaped sponges, a plurality of heat conducting plates are fixed on the peripheral side of the outer shell, and a plurality of heat dissipation grooves are opened in the heat conducting plates.

[0006] Furthermore, two ends of the copper foil shaped sponge are fixedly connected to the heat conducting plate and the inner shell respectively.

[0007] Furthermore, the heat pipe is fixedly connected to the inner shell.

[0008] Furthermore, the shell includes an upper shell and a lower shell, a plurality of positioning slots are provided in the lower shell, and a plurality of positioning blocks are fixed to the lower side of the upper shell, and the positioning blocks correspond to the positioning slots.

[0009] Furthermore, the transformer body includes an iron core and a coil winding, and the coil winding is wound around the circumference of the iron core.

[0010] Furthermore, the transformer body includes a magnetic core and a PCB winding plate, and the PCB winding plate is located on the peripheral side of the magnetic core.

[0011] Beneficial effects of the utility model: The utility model is a flat-plate transformer, comprising an outer shell; an inner shell; a transformer body; a copper foil special-shaped sponge; and a heat pipe.

[0012] An inner shell is installed in the outer shell, and a transformer body is installed in the inner shell. The transformer body can be sealed by the inner shell, thereby achieving a good dustproof effect. A copper foil shaped sponge is installed between the outer shell and the inner shell, and heat pipes are installed on the upper and lower sides of the copper foil shaped sponge. The copper foil shaped sponge has good thermal conductivity and certain elasticity, and can achieve a good thermal conductivity effect on the transformer body in the inner shell, while also playing a protective role. The use of heat pipes can accelerate heat dissipation and improve heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall assembly three-dimensional structure of a flat-plate transformer of the utility model;

[0014] Figure 2 It is a schematic diagram of the assembled three-dimensional structure of a transformer body in a flat-plate transformer of the utility model;

[0015] Figure 3 This is a schematic diagram of the overall assembly cross-sectional structure of a flat-plate transformer of the utility model;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the inner shell of a flat-plate transformer of the utility model;

[0017] Figure 5 This is a schematic diagram of the assembly cross-sectional structure of a positioning plug and a positioning slot in a flat-plate transformer of the utility model;

[0018] In the figure: 1. outer shell; 101. upper outer shell; 102. lower outer shell; 2. inner shell; 3. transformer body; 4. iron core; 5. coil winding; 6. heat sink; 7. heat conducting plate; 8. copper foil shaped sponge; 9. heat pipe; 10. conductive plate; 11. terminal; 12. positioning plug; 13. positioning slot. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] See also Figures 1 to 5The utility model provides a technical solution: a flat transformer, comprising an outer shell 1, an inner shell 2 is installed in the outer shell 1, a transformer body 3 is installed in the inner shell 2, a conductive plate 10 is fixed in the transformer body 3, a plurality of terminals 11 are fixed on the conductive plate 10, one end of the terminal 11 is located outside the outer shell 1, a plurality of copper foil shaped sponges 8 are fixed between the outer shell 1 and the inner shell 2, heat pipes 9 are installed on the upper and lower sides of the copper foil shaped sponges 8, a plurality of heat conducting plates 7 are fixed on the peripheral side of the outer shell 1, and a plurality of heat dissipation grooves 6 are opened in the heat conducting plates 7.

[0021] In this embodiment, two ends of the copper foil shaped sponge 8 are fixedly connected to the heat conducting plate 7 and the inner shell 2 respectively, the heat pipe 9 is fixedly connected to the inner shell 2, and the inner shell 2 is made of ceramic material.

[0022] Specifically, both the ceramic material and the copper foil shaped sponge 8 have good thermal conductivity, so that the heat on the transformer body 3 can be conducted away, thereby achieving a good heat dissipation effect.

[0023] The housing 1 comprises an upper housing 101 and a lower housing 102 . A plurality of positioning slots 13 are provided in the lower housing 102 . A plurality of positioning blocks 12 are fixed to the lower side of the upper housing 101 . The positioning blocks 12 correspond to the positioning slots 13 .

[0024] Specifically, the upper shell 101 and the lower shell 102 are fixedly connected by the positioning plug 12 and the positioning slot 13 to facilitate installation and disassembly of the upper shell 101 and the lower shell 102, thereby facilitating and timely cleaning of the surface of the inner shell 2.

[0025] The transformer body 3 includes an iron core 4 and a coil winding 5 , and the coil winding 5 is wound around the circumference of the iron core 4 .

[0026] The transformer body 3 includes a magnetic core and a PCB winding board, and the PCB winding board is located on the peripheral side of the magnetic core.

[0027] Specifically, a suitable transformer body 3 can be selected according to different usage scenarios. When the overall volume of the transformer body 3 is required to be smaller, a transformer body 3 composed of a magnetic core and a PCB winding board can be used. When there is no requirement for the size of the transformer body 3, a transformer body 3 composed of an iron core 4 and a coil winding 5 can be used.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flat transformer, comprising a housing (1), characterized in that: The outer shell (1) is provided with an inner shell (2), a transformer body (3) is provided in the inner shell (2), a conductive plate (10) is fixed in the transformer body (3), a plurality of terminal posts (11) are fixed on the conductive plate (10), one end of the terminal post (11) is located outside the outer shell (1), a plurality of copper foil shaped sponges (8) are fixed between the outer shell (1) and the inner shell (2), heat pipes (9) are provided on both upper and lower sides of the copper foil shaped sponges (8), a plurality of heat conduction plates (7) are fixed on the peripheral side of the outer shell (1), and a plurality of heat dissipation grooves (6) are provided in the heat conduction plates (7).

2. A flat-plate transformer according to claim 1, characterized in that: The two ends of the copper foil special-shaped sponge (8) are respectively fixedly connected to the heat conducting plate (7) and the inner shell (2).

3. A flat-plate transformer according to claim 1, characterized in that: The heat pipe (9) is fixedly connected to the inner shell (2).

4. A planar transformer according to claim 1, characterized in that: The housing (1) comprises an upper housing (101) and a lower housing (102); a plurality of positioning slots (13) are provided in the lower housing (102); a plurality of positioning blocks (12) are fixed to the lower side of the upper housing (101); the positioning blocks (12) correspond to the positioning slots (13).

5. A planar transformer according to claim 1, characterized in that: The transformer body (3) comprises an iron core (4) and a coil winding (5), wherein the coil winding (5) is wound around the circumference of the iron core (4).

6. A flat-plate transformer according to claim 1, characterized in that: The transformer body (3) comprises a magnetic core and a PCB winding plate, wherein the PCB winding plate is located on the peripheral side of the magnetic core.

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