Preparation method of thick-film magnetic element and transformer and inductor based on magnetic element

Abstract

In order to overcome the defects in the prior art, the invention provides a preparation method of a thick-film magnetic element. The method comprises the following steps of 1, preparing a substrate; 2-1, uniformly mixing the magnetic metal powder and the glass powder, then adding an organic medium, and modulating to obtain the magnetic material slurry; 2-2, uniformly mixing the conductive metal powder and the glass powder, then adding an organic medium, and modulating to obtain the conductor material slurry; and 3, uniformly spraying the magnetic material slurry on the substrate under the protection of an inert gas, and then uniformly spraying the conductor slurry on the substrate; and 4, based on a low-temperature co-firing technology, scanning on the substrate to obtain a magnetic conductive layer and a conductive layer; and 5, dissolving the non-scanned place by adopting an organic solvent, so that the non-scanned place is separated from the substrate. The thick-film magnetic element prepared by the method has the advantages of high magnetic conductivity, small size and high power density. When the temperature of the working environment changes drastically, the change amplitudeof the working parameters is smaller than 10%, and the performance change is similar to linearity.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, and in particular relates to a preparation method of a thick-film magnetic element and a transformer and an inductor based on the magnetic element. Background technique [0002] With the rapid development of high-frequency conversion technology of power electronics, it is increasingly difficult for traditional magnetic components to meet the requirements of modern low-power electrical equipment. In contrast, the new thick-film magnetic element has the advantages of small size, low height, and light weight in structure, and has the advantages of small leakage inductance, small electromagnetic interference, and high efficiency in electrical characteristics. In switching power supplies with high efficiency and low loss And all kinds of low-power electrical components are very attractive. [0003] The new thick-film magnetic element is a kind of element with the magnetic film on the subst...

AI Technical Summary

Problems solved by technology

The magnetic core of traditional magnetic components is generally composed of silicon steel laminations. In the low frequency band, the core loss of silicon steel sheets is very small. With the development of power electronics technology, more and more magnetic components work in high frequency environments. The core loss of traditional materials will increase sharply

At the same time, the traditional transformers are mostly wire-wound, which makes it difficult to measure the parasitic parameters generated by the magnetic components during work, which is very accidental and affects the efficiency of the transformer.

On the other hand, due to the limitation of magnetic core material and structure, the volume of traditional magnetic components is very large, which affects the utilization of space, and there are shackles in the application of electronic products.

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