Low temperature rising magnetic core

Abstract

A low temperature rising magnetic core is disclosed, and comprises an integrally formed bottom plate, Center and side columns, The bottom plate is of rectangular structure, the middle column protrudesfrom the center of the top surface of the bottom plate, two side columns protrude from two ends of the top surface of the bottom plate respectively, one end of the side columns protrudes inwardly andprotrudes protruding parts, the bottom plate is concentric with the middle column, and a forming groove is concentric with the forming groove and is concentric with the bottom surface of the middle column. A forming groove is arranged at the bottom of the low-temperature-rising magnetic core, which is convenient to separately exert pressure on the center pillar during blank making, so that the overall density of the blank body is constant and deformation caused by density non-uniformity in the sintering process is avoided, and at the same time, the side pillar itself is designed as an asymmetrical symmetrical structure, so that the low-temperature-rising magnetic core has good heat dissipation performance.

Description

technical field [0001] The application belongs to the technical field of new energy charging, and in particular relates to a magnetic core with low temperature rise. Background technique [0002] The magnetic core is a sintered magnetic metal oxide composed of various iron oxide mixtures. In the prior art, ferrite magnetic cores are used in coils and transformers of various electronic devices. For example, manganese zinc ferrite is a typical magnetic core body material, and has the characteristics of high magnetic permeability and high magnetic flux density, and has low loss characteristics at frequencies below 1MHz. The material and structure of the magnetic core are important factors affecting the performance of the magnetic core. Existing commonly used MnZn ferrite E-type cores (see figure 1 ), the side column 1 is a symmetrical structure, the area of ​​the magnetic core window is small, and the heat dissipation effect is general; in addition, because the surface area o...

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Problems solved by technology

Existing commonly used MnZn ferrite E-type cores (see figure 1 ), the side column 1 is a symmetrical structure, the area of ​​the magnetic core window is small, and the heat dissipation effect is general; in addition, because the surface area of ​​the center column 2 and the side column are different, the pressure on the center column and the side column is different during the pressing process, that is, the middle column The compaction density of the column and the side column is different, and it is easy to deform during the sintering process. In the prior art, the diameter of the center column can only be reduced to improve this situation, but the thickness of the magnetic core becomes larger, and the charging equipment The thickness must increase

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