CN208111232U - A high-frequency transformer heat dissipation structure - Google Patents

Abstract

The technical problem mainly solved by the utility model is to provide a high-frequency transformer heat dissipation structure, which not only increases the heat dissipation area, improves the heat dissipation efficiency, but also improves the rigidity of the overall structure, and belongs to the field of heat dissipation structures. In order to solve the above-mentioned technical problems, a high-frequency transformer heat dissipation structure of the utility model is composed of a heat dissipation shell, a heat sink, a magnetic core assembly and a heat conducting material. The surface of the heat dissipation shell is provided with a plurality of heat sinks. Inside is provided with a cavity for accommodating the magnetic core assembly, the magnetic core assembly is located in the cavity inside the heat dissipation shell, the surface of the magnetic core assembly is covered with an insulating layer, and the magnetic core assembly and the internal heat dissipation shell The gaps between the cavities are filled with heat-conducting materials.

Description

A high-frequency transformer heat dissipation structure

technical field

The utility model relates to a heat dissipation structure, in particular to a heat dissipation structure of a high frequency transformer.

Background technique

With the rapid development of rail transportation, the requirements for high-frequency switching power supply are getting higher and higher. If the efficiency of the high-frequency switching power supply can be improved, its volume and weight will be greatly reduced, and the power utilization efficiency can be greatly improved, materials can be saved, costs can be reduced, and a near-ideal load matching can be achieved.

The high-frequency transformer is the most important component of the high-frequency switching power supply. The inventors found that the transformer used in the current high-frequency switching power supply has a large output power, which causes a large amount of heat generated by the coil, while the existing transformer has a cooling effect It is not ideal and causes difficult heat dissipation, which easily leads to the occurrence of safety accidents. Thereby restricting the use and design of other components, affecting the overall balance structure.

Chinese utility model patent high-frequency transformer, patent number 201520805053.0, discloses a high-frequency transformer. The high-frequency transformer includes a magnetic core, a primary winding and a secondary winding. Both the primary winding and the secondary winding are wound with hollow metal tubes. , There is a cooling medium in the metal tube, and the difference between the outer diameter and the inner diameter of the metal tube is less than twice the penetration depth. The primary and secondary windings of high-frequency transformers are wound by using hollow metal tubes with cooling medium instead of the existing multi-strand wires, which not only reduces the consumption of metal materials, but also greatly improves the heat dissipation capacity of the windings, avoiding the skin effect, It is conducive to the large-capacity design of high-frequency transformers. However, its overall structure is relatively complicated, and the heat dissipation problem of the appearance cannot be improved.

Utility model content

The technical problem mainly solved by the utility model is to provide a high-frequency transformer heat dissipation structure, which not only increases the heat dissipation area and improves the heat dissipation efficiency, but also improves the rigidity of the overall structure.

In order to solve the above-mentioned technical problems, a high-frequency transformer heat dissipation structure of the present invention is composed of a heat dissipation shell, a heat dissipation fin, a magnetic core assembly and a heat conduction material, which not only increases the heat dissipation area, improves the heat dissipation efficiency, but also improves the overall structure. rigidity.

The surface of the heat dissipation shell is provided with a plurality of heat sinks, and the interior of the heat dissipation shell is provided with a cavity for accommodating a magnetic core assembly, and the magnetic core assembly is located in the cavity inside the heat dissipation shell, and the magnetic core assembly The surface of the magnetic core assembly is covered with an insulating layer, and the gap between the magnetic core assembly and the cavity inside the heat dissipation shell is filled with heat conducting material.

As a further optimization of the utility model, the radiator fins on the surface of the radiator shell described in the radiator structure of a high-frequency transformer of the utility model are arranged in a criss-cross pattern.

As a further optimization of the utility model, the utility model is a high-frequency transformer heat dissipation structure in which the heat dissipation fin and the heat dissipation shell are integrally formed.

As a further optimization of the utility model, the magnetic core assembly described in a high-frequency transformer heat dissipation structure of the utility model is composed of a magnetic core and a wire, the wire is wound on the magnetic core, and the surfaces of the magnetic core and the wire are uniform covered with insulation.

As a further optimization of the utility model, the heat dissipation shell described in the heat dissipation structure of a high-frequency transformer of the utility model is a cuboid, and the heat dissipation fins on two adjacent surfaces thereof are perpendicular to each other.

The beneficial effects of a high-frequency transformer heat dissipation structure of the utility model are as follows:

1. The heat sink is distributed on multiple surfaces of the heat dissipation shell, which not only increases the heat dissipation area, improves the heat dissipation efficiency, but also enhances the rigidity of the heat dissipation shell.

2. Due to the improved heat dissipation efficiency, the volume and mass of the device can be greatly reduced under the same load conditions.

3. The heat dissipation structure of the high-frequency transformer takes into account both protection and heat dissipation functions, so that its volume is significantly better than that of traditional high-frequency transformers, thereby reducing manufacturing costs, increasing the space reserved for other components, and reducing the overall structural volume , so as to achieve the goal of miniaturization and light weight of the overall equipment.

Description of drawings

Below in conjunction with accompanying drawing and specific implementation method, the utility model is described in further detail.

Fig. 1 is a three-dimensional structural schematic diagram of a heat dissipation structure of a high-frequency transformer of the present invention.

Fig. 2 is a structural schematic diagram of a heat dissipation structure of a high-frequency transformer of the present invention.

Fig. 3 is a sectional view along A-A in Fig. 2 .

Fig. 4 is a left view of a heat dissipation structure of a high-frequency transformer of the present invention.

Fig. 5 is a side view of a heat dissipation structure of a high-frequency transformer of the present invention.

Fig. 6 is a right view of a heat dissipation structure of a high-frequency transformer of the present invention.

In the figure: heat dissipation shell 1; heat dissipation fin 2; magnetic core assembly 3; heat conduction material 4.

Detailed ways

1, 2, 3, 4, 5, 6 to illustrate this embodiment, a high-frequency transformer heat dissipation structure of the utility model is composed of a heat dissipation shell 1, a heat sink 2, a magnetic core assembly 3 and a heat-conducting material 4, not only The heat dissipation area is increased, the heat dissipation efficiency is improved, and the rigidity of the overall structure is improved.

The surface of the heat dissipation shell 1 is provided with a plurality of heat sinks 2, and the interior of the heat dissipation shell 1 is provided with a cavity for accommodating a magnetic core assembly 3, and the magnetic core assembly 3 is located in the cavity inside the heat dissipation shell 1, The surface of the magnetic core assembly 3 is covered with an insulating layer, and the gap between the magnetic core assembly 3 and the cavity inside the heat dissipation housing 1 is filled with a thermally conductive material 4 . The heat dissipation shell 1 can be made of aluminum alloy or other metal materials. The heat dissipation shell 1 is used to place the magnetic core assembly 3 and transfer the heat generated by the magnetic core assembly 3 to achieve the effect of heat dissipation. A cavity for accommodating the magnetic core assembly 3 is provided inside the heat dissipation housing 1 , so as to facilitate better placement of the magnetic core assembly 3 . The gap between the magnetic core assembly 3 and the cavity is filled with a heat-conducting material 4 . The heat-conducting material 4 is used for transferring heat, and the heat generated by the magnetic core assembly 3 is transferred to the heat-dissipating shell 1 through the heat-conducting material 4 . Otherwise, because there is a gap between the magnetic core assembly 3 and the cavity, the thermal conductivity of the air is poor, and the air between the magnetic core assembly 3 and the cavity is filled with a heat-conducting material 4, which can improve the efficiency of heat transfer. It is good for heat dissipation. The insulating layer on the surface of the magnetic core assembly 3 is used for insulation to prevent conduction from being transmitted to the heat dissipation shell 1 or the heat sink 2 .

The heat dissipation fins 2 on the surface of the heat dissipation housing 1 are distributed in a criss-cross pattern. The heat dissipation housing 1 can be a cuboid, and the heat dissipation fins 2 are not provided on the surface except for the cavity for the magnetic core assembly 3 on the surface, and the heat dissipation fins 2 are provided on the other five surfaces. Moreover, the heat dissipation fins 2 on the surface of the heat dissipation shell 1 are distributed in a criss-cross pattern, which not only increases the heat dissipation area, improves the heat dissipation efficiency, but also enhances the rigidity of the heat dissipation shell.

The heat sink 2 and the heat dissipation shell 1 are integrally formed.

The magnetic core assembly 3 is composed of a magnetic core and a wire, the wire is wound on the magnetic core, and the surfaces of the magnetic core and the wire are covered with an insulating layer. The magnetic core assembly 3 can be purchased in the market, and its function is to transform voltage and current through the effect of electromagnetic mutual inductance.

The heat dissipation housing 1 is a cuboid, and the heat dissipation fins 2 on two adjacent surfaces thereof are perpendicular to each other. The heat sink 2 not only increases the heat dissipation area, improves the heat dissipation efficiency, but also enhances the rigidity of the heat dissipation shell.

The working principle of a high-frequency transformer heat dissipation structure of the utility model:

When the magnetic core assembly 3 is in a working state, heat will be continuously generated. The heat generated by the magnetic core assembly 3 will be transferred to the heat dissipation shell 1 through the heat conduction material 4. The heat conduction material 4 can be selected from existing heat conduction materials in the market, and its function is to transfer heat. The surface of the heat dissipation shell 1 is covered with heat sinks 2 , and the heat is dissipated faster through the heat sinks 2 . This structure directly transfers the heat generated by the magnetic core assembly 3 to the heat sink 2 , so that heat dissipation can be accelerated directly through the heat sink 2 .

Compared with the high-frequency transformer in the prior art, the heat dissipation structure of the high-frequency transformer provided by the utility model adopts the heat-dissipating body of the shell of the new form of heat-dissipating structure to perform rapid heat dissipation, and can achieve higher efficiency under the premise of ensuring high efficiency. The purpose of small size and extended service life.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples, and the changes, modifications, additions or replacements made by those of ordinary skill in the art within the essential scope of the present utility model also belong to Protection scope of the present utility model.

Claims (5)

1. a kind of high frequency transformer radiator structure, by heat-dissipating casing (1), cooling fin (2), magnetic core assembly (3) and Heat Conduction Material (4) Composition, it is characterised in that：The surface of the heat-dissipating casing (1) is provided with multiple cooling fins (2), the heat-dissipating casing (1) it is interior Portion is provided with the cavity for accommodating magnetic core assembly (3), and the magnetic core assembly (3) is located in the internal cavity of heat-dissipating casing (1), described The surface of magnetic core assembly (3) is covered with insulating layer, the seam between the magnetic core assembly (3) and the cavity of heat-dissipating casing (1) inside It is filled in gap full Heat Conduction Material (4).

2. a kind of high frequency transformer radiator structure according to claim 1, it is characterised in that：The heat-dissipating casing (1) The cooling fin (2) on surface is distributed in a crisscross manner.

3. a kind of high frequency transformer radiator structure according to claim 1 or 2, it is characterised in that：The cooling fin (2) It is integrally formed with heat-dissipating casing (1).

4. a kind of high frequency transformer radiator structure according to claim 1, it is characterised in that：The magnetic core assembly (3) It is made of magnetic core and wire rod, for the material winds on magnetic core, the surface of the magnetic core and wire rod is all covered with insulating layer.

5. a kind of high frequency transformer radiator structure according to claim 1, it is characterised in that：The heat-dissipating casing (1) For cuboid, the cooling fin (2) on two adjacent surfaces is mutually perpendicular to.