一种基于纳米晶软磁合金的SST用高频变压器铁芯及其制备方法

By using nanocrystalline strip roll-to-roll tension annealing and sol-gel insulating coating treatment, the high-frequency loss and complex process problems of nanocrystalline soft magnetic alloy high-frequency transformer cores were solved, achieving high power density and improved stability.

CN121748158BActive Publication Date: 2026-07-17SHENZHEN YN TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN YN TECH CO LTD
Filing Date
2026-02-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing nanocrystalline soft magnetic alloy high-frequency transformer cores in SST suffer from high high-frequency losses and interlayer eddy current problems due to excessively high permeability. Furthermore, existing processing techniques are complex and have failed to effectively improve their application scenarios.

Method used

Nanocrystalline ribbon is subjected to roll-to-roll tension annealing and coated with a sol-gel insulating coating, combined with vacuum impregnation and curing, to form an inorganic-organic composite insulating layer, which optimizes magnetic properties and enhances stability.

Benefits of technology

It significantly reduces high-frequency losses in the iron core, improves performance stability, simplifies the processing technology, and enhances the power density and high-temperature stability of the iron core.

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Abstract

本发明属于软磁材料及变压器技术领域,具体涉及一种基于纳米晶软磁合金的SST用高频变压器铁芯及其制备方法。所述制备方法包括如下步骤:将纳米晶带材先进行卷对卷张力退火处理,然后表面涂覆溶胶凝胶绝缘涂层;或将纳米晶带材表面先涂覆溶胶凝胶绝缘涂层,然后进行卷对卷张力退火处理,得到退火及绝缘处理后的纳米晶带材;将处理后的纳米晶带材卷绕为闭合磁路的铁芯,浸胶固化,得到SST用高频变压器铁芯。本发明的变压器铁芯采用纳米晶带材经卷绕粘结固化制成,通过纳米晶带材表面涂覆溶胶凝胶绝缘涂层与浸胶固化协同配合实现纳米晶带材的层间绝缘与增强稳定,能够显著降低铁芯的高频损耗并具有良好的性能稳定性。
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