Resonance transformer structure

Abstract

The invention provides a resonance transformer structure, which comprises a first winding base, a primary winding, a plurality of secondary windings and a magnetic core group, wherein the first winding base comprises a body and a channel, wherein the channel passes through the body; and the body is provided with a first winding zone and a plurality of second winding zones of single grooves; the first winding zone is provided with a plurality of lead pins; the plurality of second winding zones of the single grooves are arranged at the two sides of the first winding zone; the primary winding iswound on the first winding zone of the first winding base, and is connected with the plurality of lead pins; the plurality of secondary windings are respectively wound on the plurality of second winding zones of the single grooves on the first winding base; and a part of the magnetic core group is arranged in the channel of the first winding base. The resonance transformer structure can enhance current transfer power, and reach the purpose of stably controlling a leakage inductance value; and meanwhile, the volume of the resonance transformer is thinned. In addition, the output voltage of theresonance transformer can be increased, thus being high in structure diversity, reducing manufacturing cost, and the like.

Description

technical field [0001] The invention relates to a resonant transformer structure, in particular to a thinned resonant transformer structure. Background technique [0002] Transformer is a magnetic component often used in various electrical equipment. It uses the principle of electric energy and magnetic energy conversion induction to adjust different voltages to make it reach the applicable range of electrical equipment. [0003] In the power supply system of electronic products such as LCD TVs, transformers are mainly transformers with leakage inductance, such as resonant transformers (LLC transformers), to reduce switching losses and reduce noise. see figure 1 , which is a structural schematic diagram of a known transformer. As shown in the figure, the transformer 1 includes a winding base 11 (bobbin), a cover 12 (cover) and a magnetic core assembly 13 (magnetic core assembly), wherein a primary winding 111 (primary winding coil) and a secondary winding 112 (secondary wi...

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Problems solved by technology

[0004] In the known transformer 1, the cover body 12 is used to increase the creepage distance between the primary winding 111 and the magnetic core group 13 and the secondary winding 112 and the magnetic core group 13, but the setting of the cover body 12 relatively increases the height of the transformer 1 , and, in order to achieve the inductance required by the transformer 1, the primary winding 111 and the secondary winding 112 need to reach a specific number of winding turns, but when the wire diameter is large, the volume of the transformer 1 will increase due to the increase in the number of winding turns , making it difficult for the known transformer 1 to conform to the development trend of thinning

[0005] In addition, after the conventional transformer 1 is assembled, an air gap (not shown) will be formed in the contact area between the two corresponding second magnetic core parts 132, and the air gap is formed between the primary winding 111 and the secondary winding 112, If the secondary winding 112 is short-circuited, the magnetic circuit will generate a separate loop, which makes it difficult to stably control the leakage inductance of the transformer 1

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