Composite magnetic core structure and magnetic element

Abstract

The embodiment of the invention discloses a composite magnetic core structure and a magnetic element, which are used for reducing magnetic core loss and increasing the frequency of application. In the embodiment of the invention, the composite magnetic core structure consists of a first magnetic core part and a second magnetic core part, the first magnetic core part is made of low-magnetic permeability soft magnetic material, the second magnetic core part is made of high-magnetic permeability soft magnetic material, and the first magnetic core part and the second magnetic core part are combined and formed into a magnetic flux loop.

Description

technical field [0001] The invention relates to the field of composite magnetic technology, in particular to a composite magnetic core structure and a magnetic element. Background technique [0002] In switching power supplies, magnetic components (or magnetic components) are the core components of energy conversion and storage, and their performance is related to the efficiency and performance of the entire switching power supply. As one of the main loss devices, magnetic components are increasingly subject to hardware design. The attention of personnel, and the magnetic core as the core component of the magnetic element, its performance is related to the performance of the magnetic element. How to reduce the loss of the magnetic element and improve the efficiency and overall performance of the switching power supply becomes the key. At the same time, the cost It is also an important factor to consider when designing the core structure. In the traditional magnetic element ...

AI Technical Summary

Problems solved by technology

In the traditional magnetic element design, we should consider using a single magnetic core material for the design of the magnetic element, which will inevitably bring a bottleneck to the design of the magnetic element and cannot achieve the best use of the magnetic element. Therefore, composite magnetic Technology should be born, using the composite of different magnetic cores, or the mixed processing and integral molding of different magnetic materials, will improve the overall performance of magnetic components

[0003] With the development of composite magnetic technology in the current industry, composite magnetic technology will receive more and more attention, and composite magnetic design technology will become necessary, but the inventor found that the composite magnetic core structure of most magnetic elements is in the process of realizing the embodiment of the present invention In order to avoid the increase of winding loss due to the air gap, the setting of the air gap is cancelled. However, although it reduces the winding loss, it will lead to an increase in the core loss, thereby increasing the total loss of the magnetic components, and the application frequency lower

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