Transformer structure

Abstract

The invention relates to a transformer structure, which comprises a plurality of winding bases, a primary winding, a secondary winding and magnetic core groups, wherein the winding bases are arranged in parallel and each winding base comprises a body of which the two opposite sides are provided with side walls, a plurality of clapboards which are arranged on the body and, together with the side walls, define first winding parts and second winding parts which are isolated by the clapboards; passages passing through the side walls and the body, and isolation elements arranged in the passages. The primary winding and the secondary winding are wound on the first and the second winding parts of the winding bases respectively, and the magnetic core groups are arranged in the passages of the winding bases and are supported against the isolation elements. Thus, compared with the prior art, the transformer structure not only can control the electric leakage inductance value of a transformer, but also can ensure the electric safety of the transformer.

Description

technical field [0001] The invention relates to a transformer structure, in particular to a thinned transformer structure. Background technique [0002] Transformer is a common magnetic component in various electrical equipment. It uses the principle of electric energy and magnetic energy conversion induction to adjust the voltage so that the voltage reaches the applicable range of electrical equipment. [0003] Generally speaking, the control of the leakage inductance of the transformer is very important to the power converter, because it will affect the power conversion efficiency of the power converter, and in new generation electronic products such as liquid crystal display (Liquid Crystal Display, LCD) In the current power supply system, the transformer is mainly a transformer with leakage inductance, such as a resonant transformer (LLC transformer). In this type of application, the current of the power supply system will first pass through a primary winding of the tran...

AI Technical Summary

Problems solved by technology

[0005] However, the distance between the two corresponding first magnetic core parts 131 of the existing transformer 1 may not be fixed due to external force or other factors, thus it is difficult to stably control the leakage inductance value of the transformer 1; in addition, due to the magnetic core group 13 When it is sleeved on the winding base 11, the distance between the second magnetic core part 132 of the magnetic core group 13 and the primary winding 111 and the secondary winding 112 is very close, so it must be covered by the cover 12 on the winding base. To increase the creepage distance between the primary winding 111, the secondary winding 112 and the magnetic core group 13, the periphery of the seat 11 must pass through the plate 121 of the cover 12 between the primary winding 111 and the secondary winding 112 To keep an appropriate safety distance with the rib 141 of the base 14, in other words, the cover 12 and the base 14 are indispensable components for improving the electrical safety of the existing transformer 1, so it can be seen that the existing transformer 1 has many components , Inconvenient assembly and not conducive to thin design

Furthermore, the pins 115 of the winding base 11 of the transformer 1 must reserve a certain length for the outlet ends 113, 114 of the primary winding 111 and the secondary winding 112 to be directly wound and welded on it, so that not only It will increase the height of the transformer 1, and may damage the flatness of the pin 115 during the winding and welding process, thereby affecting the structural strength of the transformer 1 when it is arranged on the circuit board (not shown) through the pin 115, or even affecting its electrical connection Effect

Images