CN201196901Y - Transformer winding structure - Google Patents

Abstract

A winding structure of transformer is prepared as setting a winding frame on primary side and secondary side of said winding frame for carrying out voltage conversion on input voltage and then outputting it, setting multiple partition plates on secondary side to separate winding slots, spanning two juxtaposed winding bodies on said partition plates in sequence and winding them on said winding slots for outputting at least two same driving powers on secondary side by a set of primary side for using them as loads and simplifying structure for lowering production cost and making back-end load output power be same.

Description

Transformer winding structure

technical field

The utility model relates to a transformer winding structure, in particular to a transformer winding structure used for an inverter (Inverter).

Background technique

In a general transformer, an iron core is placed in a winding shaft, and then coils of the same or different diameters are wound on the winding shaft to form a primary side coil and a secondary side coil. The primary side coil and the secondary side coil are wound on the core. The side coil is then covered with a shell, so that a transformer of an induction coil can be formed and applied to electronic devices that need to provide power, such as liquid crystal panels, etc., and most common liquid crystal panels use multiple cold cathode lamps in the manufacturing process tube to improve the brightness of the LCD panel, so the above-mentioned transformer must be designed with multiple primary side coils and multiple secondary side coils to output multiple sets of driving currents to drive these cold cathode lamps, but this design will cause cold cathode lamps to be driven. The output driving current of the secondary side of the lamp tube is different, resulting in uneven brightness, and the current driving the cold cathode lamp tube is related to the problem of the brightness of the lighting.

As shown in FIG. 1 , it is a schematic diagram of the use state of a known transformer. As shown in the figure, it mainly includes an iron core group 100, two groups of primary side coils 110, 120, and two groups of windings respectively wound in the middle part of the iron core group 100. The secondary side coils 130, 140 and the two loads 30 are respectively wound around the two ends of the iron core group 100, and the primary side coils 110, 120 and the secondary side coils 130, 140 are each separated by a spacer 101, wherein , the input voltage (Vi) is input to the primary side coils 110, 120, after the iron core group 100 is excited, the secondary side coils 130, 140 provide driving current and drive the back-end load 30 (the load 30 is a cold cathode lamp tube ), although the transformer can supply power to two loads, its composition also leads to the following problems:

1. Since the two loads 30 are installed at the same end of the core set 100, the two sets of secondary side coils 130, 140 respectively wound around the two ends of the iron core set 100 must have one set on the circuit board (PCB) During printing, the group of secondary side coils 130, 140 can be connected to the back-end load 30 by means of jumper wires and driven, or the group of secondary side coils 130, 140 must be connected to the The back-end load 30 is not only complicated but also labor-intensive. If a double-layer circuit board is used, it will not only increase the design difficulty but also increase the production cost, which does not meet the needs of today's industry.

2. The design of the known iron core group 100 is composed of two E-shaped iron cores, and the two ends of the joint part in the middle are used to respectively wind the primary side coils 110, 120, which not only makes the magnetic field lines incoherent but also causes The situation that causes loss occurs. Furthermore, the above-mentioned secondary side coils 130, 140 are respectively wound around the two ends of the iron core group 100, which is likely to cause different inductances and larger differences in output voltage and driving current, and The driving current is used to drive the two back-end loads 30 . If the driving currents of the secondary side coils 130 and 140 are not equal, the illumination brightness of the two rear-end loads 30 must be uneven.

The above various problems are really the problems that manufacturers are extremely waiting to solve.

Utility model content

The main purpose of this utility model is to improve the above-mentioned defects, and the primary side wound by a single iron core and a single winding body can output multiple identical driving currents on the secondary side to drive the load at the rear end, and the structure can be simplified And the output power of the back-end load can be the same.

In order to achieve the above purpose, the utility model proposes a transformer winding structure, which includes a winding frame, the winding frame has a primary side and a secondary side to convert the input voltage and then output it, and the secondary side is provided with The winding slots are partitioned by a plurality of partitions, wherein at least two juxtaposed winding bodies sequentially straddle the partitions and are wound in the winding slots.

Through the above technical scheme, the utility model produces the following beneficial effects compared with the known technology:

1. By co-winding the two winding bodies on the secondary side of the winding frame, the transformer winding frame does not need to be additionally assembled with a circuit board, or to transmit power to the rear end of the secondary side through jumpers, etc. There are at least two loads, thereby simplifying the structure of the transformer and reducing the time required for the manufacturing process and the production cost.

2. By winding the two winding bodies on the same side of the bobbin frame, the secondary side can generate the same driving power to supply the two loads, so that the output power of the loads is the same.

Description of drawings

Figure 1 is a schematic diagram of a known transformer in use.

Fig. 2 is a schematic diagram of the three-dimensional appearance of the utility model.

Fig. 3 is a schematic diagram of the winding state of the present invention.

FIG. 4 is a schematic diagram of another winding mode of the present invention.

Figure 5-1 is a schematic diagram (1) of an embodiment of the utility model.

Figure 5-2 is the equivalent circuit diagram of Figure 5-1.

Figure 6-1 is a schematic diagram (2) of an embodiment of the utility model.

Figure 6-2 is the equivalent circuit diagram of Figure 6-1.

Detailed ways

Relevant detailed description and technical content of the present utility model, cooperate schematic diagram to illustrate as follows now:

Please refer to Fig. 2, the utility model is a transformer winding structure, which mainly includes a winding frame 10, and the winding frame 10 has a through hollow section A for installing an iron core group 20, The iron core group 20 is not limited to the EE assembly pattern shown in the figure, and can also be replaced with other equivalent patterns such as EI, CI, etc., and the bobbin 10 is provided with a barrier 11, and A primary side 12 for connecting the input power and a secondary side 13 for converting the input power to output are arranged on both sides of the 11, wherein the secondary side 13 is provided with a plurality of partitions 14 to separate the winding groove B, and The two ends of the bobbin frame 10 are respectively extended from the primary side 12 and the secondary side 13 to form a joint part 15, 16, and the joint part 15, 16 has a plurality of terminals 17, 18 to be set on the circuit board. As shown in Figure 3 or Figure 4, the utility model is characterized in that the primary side 12 is wound with a winding body L1, and the secondary side 13 is provided with at least two juxtaposed winding bodies L2, L3 , the winding bodies L2, L3 are wound across these partitions 14 and placed in these winding grooves B in sequence. The above-mentioned winding bodies L1, L2, L3 can be enameled wires with electrical conductivity and magnetic conductivity or others. Effective wire; during actual winding, the secondary side 13 can have different winding methods according to the width of the winding groove B and the wire diameters of the two winding bodies L2 and L3 wound, as shown in Figure 3 For example, the distance between adjacent partitions 14 of the secondary side 13 (ie the width of the winding slot B) is equal to the sum of the wire diameters of at least two winding bodies L2, L3, so that the two winding bodies L2, L3 can be wound in the winding groove B in a horizontal parallel manner; in addition, the distance between the adjacent partitions 14 of the secondary side 13 can also be equal to the wire diameter of a single winding body L2, L3 as shown in Figure 4, The two winding bodies L2, L3 are wound on the winding groove B in a vertical stacking manner, thus constituting the main structure of the utility model, through which at least two winding bodies L2, L3 are wound around the winding groove B. The technical solution enables the utility model to output multiple identical drive currents on the secondary side 13 through the primary side 12 wound by a single core group 20 and a single winding body L1 to drive multiple The electronic device achieves the effect of simplifying the structure of the transformer winding frame 10; and the winding bodies L2 and L3 wound on the secondary side 13 are not limited to the two groups shown in the figure. The number of electronic devices, and adjust the number of winding bodies L2, L3 on the secondary side 13 according to the wire diameters of the winding bodies L2, L3 and the width of the winding groove B.

In addition, as shown in Fig. 5-1 and Fig. 5-2, it is a schematic diagram of an embodiment of the present utility model and its equivalent circuit. The at least two winding bodies L2 and L3 wound on the secondary side 13 are respectively electrically connected to a Load 30 (such as cold-cathode tube), the utility model can supply the conversion voltage required by each load 30 at the same time; moreover, at least two winding bodies L2, L3 of this secondary side 13 also can be the same polarity The terminals are connected together to electrically connect a single load 30 (as shown in Figure 6-1 and Figure 6-2), and the user adjusts the connection method of the two winding bodies L2, L3 and the load 30 according to the actual implementation situation. Therefore, the utility model has higher flexibility when used.

Through the above technical scheme, the utility model produces the following beneficial effects compared with the known technology:

1. By co-winding the two winding bodies L2 and L3 on the secondary side 13 of the winding frame 10, the transformer winding frame 10 does not need to set up additional circuit boards, or transmit power to the The at least two loads 30 at the back end of the secondary side 13 simplifies the structure of the transformer and reduces the time required for the manufacturing process and the production cost.

2. The two winding bodies L2, L3 are also wound on the same side of the bobbin frame 10, so that the secondary side 13 can generate the same driving power to supply the two loads 30, so that the output power of the loads 30 is the same .

In summary, the above is only a preferred embodiment of the present utility model, and is not used to limit the scope of implementation of the present utility model. That is, all equivalent changes and modifications made according to the claims of the present utility model shall be included in the scope of the present utility model. New category of technology.

Claims (6)

1. transformer coiling structure, include a drum stand (10), described drum stand (10) has primary side (12) and secondary side (13) and input voltage is carried out exporting after the voltage transitions, and described secondary side (13) is provided with a plurality of dividing plates (14) and separates out a plurality of winding slots (B), it is characterized in that:

At least two juxtaposed winding bodies (L2), (L3) are wound on described winding slot (B) across described dividing plate (14) in regular turn.

2. transformer coiling structure according to claim 1 is characterized in that, the end points of at least two described winding bodies (L2), (L3) same polarity joins to be electrically connected a load (30).

3. transformer coiling structure according to claim 1 is characterized in that, at least two described winding bodies (L2), (L3) are electrically connected a load (30) respectively.

4. transformer coiling structure according to claim 1 is characterized in that, the spacing of described secondary side (13) two adjacent dividing plates (14) equals the line footpath of single winding body (L2), (L3).

5. transformer coiling structure according to claim 1 is characterized in that, the spacing of described secondary side (13) two adjacent dividing plates (14) equals the sum total at least two described winding bodies (L2), (L3) line footpath.

6. transformer coiling structure according to claim 1 is characterized in that, described winding body (L2), (L3) have the enamelled wire of conduction and magnetic conduction.

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