基于金属磁粉芯浇筑的一体成型电感及其制备方法
By constructing a phosphate passivation layer and a fluorinated acrylate-nano silica coating layer on the surface of metal magnetic powder, the problems of high core loss and increased parasitic capacitance of inductor cores are solved, achieving inductor performance with high saturation flux density and low loss.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN YAMAXI ELECTRONICS
- Filing Date
- 2025-12-18
- Publication Date
- 2026-07-17
AI Technical Summary
While increasing inductance and strengthening magnetic field, existing inductor core materials suffer from high core loss and increased parasitic capacitance, especially due to the high noise and dielectric constant caused by the polar resin coating layer.
A low dielectric constant coating layer is constructed on the surface of metal magnetic powder by combining a phosphoric acid passivation layer with a fluorinated acrylate layer. The adhesion and heat resistance of the metal magnetic powder to the insulating layer are improved by phosphating modification and nano-silica coating.
It achieves high saturation magnetic flux density and low core loss, reduces the influence of dielectric constant, improves the heat resistance of the insulation layer, and adapts to the operating temperature of automotive inductors.
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Figure CN121528698B_ABST
Abstract
Citation Information
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