A low-voltage high-current ultra-microcrystalline high-frequency transformer

Abstract

The invention relates to a low-voltage heavy-current ultracrystalline high-frequency transformer which comprises an ultracrystalline magnetic core provided with a magnetic core inner ring, wherein the four corners of two glass silk plates are connected by bolts to clamp and fix the ultracrystalline magnetic core; a first aluminum profile column and a second aluminum profile column are arranged in the magnetic core inner ring, and isolated in an insulating manner; the upper end and the lower end of the first aluminum profile column penetrate out of the two glass silk plates respectively; the penetration length of the upper end is greater than that of the lower end; the upper end and the lower end of the second aluminum profile column penetrate out of the two glass silk plates respectively; the penetration length of the lower end is greater than that of the upper end; the lower end of the first aluminum profile column is connected with a first manifold plate; and the upper end of the second aluminum profile column is connected with a second manifold plate. According to the low-voltage heavy-current ultracrystalline high-frequency transformer, the magnetic core adopts an ultracrystalline soft magnetic material and can be simply fixed by the bolts by utilizing insulating materials; water-cooling heat dissipation or air-cooling heat dissipation can be performed; and the transformer is simple and compact in structure, high in integration degree, convenient to assemble, low in failure rate and low in cost, and is suitable for mass production.

Description

technical field [0001] The invention relates to the technical field of high-frequency transformers, in particular to a low-voltage high-current ultramicrocrystalline high-frequency transformer. Background technique [0002] With the development and maturity of power electronics technology, high-efficiency, high-carrying capacity, and small-volume high-frequency switching power supplies are more and more widely used in various fields such as industry. In the design of high-frequency switching power supply, the high-frequency transformer is the core component of the switching power supply system. The quality of performance such as loss will directly affect the quality of the overall performance of the high-frequency switching power supply. [0003] Ultrafine crystal materials have the advantages of extremely high initial magnetic permeability, low permeability change with magnetic flux density and temperature, low loss, and high saturation magnetic flux density. Therefore, ul...

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Problems solved by technology

[0004] In addition, with the reduction of the secondary voltage and the increase of the current of the high-frequency transformer, the winding method still cannot meet the goal of reducing the volume of the transformer. The problem of heat dissipation is becoming more and more prominent and important, and the traditional heat dissipation methods can no longer meet the actual needs

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