CN201332001Y - Inductive component, power supply device and panel television - Google Patents

Abstract

The utility model is applicable to the field of television, and provides an inductance component, a power supply device and a flat-panel TV. The inductance component includes: a magnetic core and a coil matched with the magnetic core, and the magnetic core is FEI type magnetic core; the coil further includes a primary coil and a secondary coil; both the primary coil and the secondary coil are multilayer PCB coils. The inductive components provided by the utility model adopt FEI type magnetic cores and multi-layer PCB coils matched with them, so that the inductive components can be made very thin; it is suitable for ultra-thin requirements of flat-panel TVs.

Description

An inductive component, a power supply device and a flat-panel TV

technical field

The utility model belongs to the field of televisions, in particular to an inductance component, a power supply device and a flat-panel television.

Background technique

Compared with cathode ray tube (Cathode Ray Tube, CRT) TV, the biggest advantage of flat-panel TV is that flat-panel TV is much thinner and can be hung on the wall. Consumers also hope that flat-panel TV can be hung on the wall like a painting. Therefore, each manufacturer strives to make the flat-panel TV thinner to meet the demand. The existing T company puts the heat sink outside so that the thickness of the flat-panel TV is 68mm, while K company uses thin components and ultra-thin LCD The screen makes the thickness of the flat-panel TV 35mm.

The thin components in existing flat-panel TVs can basically be realized, the most critical ones are power inductors and transformers; among them, there are two ways to realize power inductors: one is to use a relatively low-height magnetic ring, and the disadvantage of this method is that the magnetic The cross-sectional area of the ring is small, it is difficult to wind and the price of the magnetic ring is high, it is difficult to find a suitable specification; the other is to use a traditional EE core with a thin thickness or a magnetic core of other shapes. The disadvantage of this method is that the magnetic The cross-sectional area of the core is small, winding is difficult, and the price is high. At the same time, multiple inductors need to be connected in series to meet the requirements. Similarly, the existing transformer also has the above-mentioned problems.

Utility model content

The purpose of the utility model is to provide an inductance component with a large cross-sectional area of a magnetic core and a short magnetic circuit.

The utility model is achieved in this way, a kind of inductance components, the inductance components include: a magnetic core and a coil matched with the magnetic core, the magnetic core is an FEI type magnetic core; the coil is further It includes a primary coil and a secondary coil; both the primary coil and the secondary coil are multi-layer PCB coils.

Another object of the present invention is to provide a power supply device using the above inductive components.

Another object of the present invention is to provide a flat-panel TV using the above-mentioned power supply device.

The inductive components provided by the embodiment of the utility model adopt the FEI type magnetic core and the multi-layer PCB coil matched with it, so that the inductive components can be made very thin; it is suitable for the ultra-thin requirements of flat-panel TVs.

Description of drawings

Fig. 1 is the structural diagram of the magnetic core that the utility model embodiment provides;

Fig. 2 is a structural diagram of the primary coil provided by the embodiment of the present invention;

Fig. 3 is a structural diagram of the secondary coil provided by the embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The inductance components provided by the embodiment of the utility model adopt FEI type magnetic cores and multi-layer PCB coils, so that the inductance components can be made very thin.

The inductive components provided by the embodiment of the utility model are mainly used in the power supply device of the flat panel TV; wherein, the inductive components include: a magnetic core and a coil matched with the magnetic core, the magnetic core is an FEI type magnetic core; the coil It further includes a primary coil and a secondary coil; the primary coil and the secondary coil are multi-layer PCB coils.

In the embodiment of the present invention, the structure of the magnetic core is shown in FIG. 1 , and for the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows.

The magnetic core adopts the FEI type magnetic core 11 that the middle column cross-sectional area is large and the magnetic circuit is short, also can adopt the I type magnetic core 12; The cross-sectional area of the core was 220 square millimeters. As an embodiment of the present invention, the magnetic core is made of flat and thin ferrite material.

As an embodiment of the present invention, the multilayer PCB coil has a square hole, and the multilayer PCB coil is sheathed on the central column of the magnetic core through the square hole.

In this utility model embodiment, the coil includes a primary coil and a secondary coil; both the primary coil and the secondary coil are multilayer PCB coils; wherein, Figure 2 shows the structure of the primary coil, and Figure 3 shows the secondary coil The structure; the number of layers of the PCB coil can be arbitrary, but for the sake of illustration, the primary coil takes 6 layers as an example, and the secondary coil takes 4 layers as an example. The details are as follows.

Due to the large cross-sectional area of the central column of the magnetic core, the number of turns of the coil wound on the central column of the magnetic core can be reduced, and since the area of the window of the magnetic core is reduced, the planar coil can be made by using a PCB. As shown in Figure 2 and Figure 3, 21 is the bottom layer structure of the primary coil, 22 is the fifth layer structure of the primary coil, 23 is the fourth layer structure of the primary coil, 24 is the third layer structure of the primary coil, and 25 is the primary coil The second layer structure of the coil, 26 is the top layer structure of the primary coil; wherein, 21, 22 and 23 are three-layer and four-turn coils connected together, and the interior is connected through through holes; 24, 25 and 26 are also three-layer and connected The four coils connected together are internally connected through through holes, and it is connected with the above four coils through wires, thus forming the primary coil of the eight diagrams; the purpose of parallel connection is to make the copper thickness and width of the coil meet the requirements , in order to reduce the resistance.

31 is the bottom layer structure of the secondary coil, 32 is the third layer structure of the secondary coil, 33 is the second layer structure of the secondary coil, and 34 is the top layer structure of the secondary coil; the PCB diagram of each secondary layer has only one circle , The four-layer PCB coil is connected in series through wires to form a secondary coil. As an embodiment of the present invention, the primary coil and the secondary coil are connected and led out through wires; and the primary coil and the secondary coil are isolated and insulated.

In the embodiment of the present utility model, the inductance component may be a transformer, may also be an inductor, or may be a power filter.

The inductive components provided by the embodiment of the utility model adopt the FEI type magnetic core and the multi-layer PCB coil matched with it, so that the inductive components can be made very thin; it is suitable for the ultra-thin requirements of flat-panel TVs.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (8)

1. An inductive component, characterized in that the inductive component includes: a magnetic core and a coil matched with the magnetic core, the magnetic core is an FEI type magnetic core; the coil further includes a primary A coil and a secondary coil; both the primary coil and the secondary coil are multi-layer PCB coils. 2. The inductive component according to claim 1, wherein the multi-layer PCB coil has a square hole, and the multi-layer PCB coil is sleeved on the center post of the magnetic core through the square hole. 3. The inductance component according to claim 1, wherein the inductance component is a transformer. 4. The inductance component according to claim 1, wherein the inductance component is an inductor. 5. The inductive component according to claim 1, wherein the multilayer PCB coils are connected through through holes. 6. The inductive component as claimed in claim 1, wherein the primary coil and the secondary coil are connected and drawn out through wires. 7. A power supply device, characterized in that the power supply device comprises the inductive component according to any one of claims 1-6. 8. A flat-panel television, characterized in that the flat-panel television comprises the power supply device as claimed in claim 7.

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