A high-precision air-gap double-coupled inductor based on integrated die casting

By using integrated die-casting technology and high-precision air gap control technology, the problem of reduced magnetic shielding effect caused by core gap in traditional coupled inductors has been solved, thus improving the stability and reliability of high-precision air gap dual-coupled inductors.

CN224501657UActive Publication Date: 2026-07-14SHANGHAI JARI INFORAMTION SCI & TECH
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI JARI INFORAMTION SCI & TECH
Filing Date
2025-06-19
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional coupled inductors use an assembly process that results in glue gaps between magnetic cores, which reduces the magnetic shielding effect and makes it difficult to precisely control the air gap size, affecting the stability and coupling efficiency of the inductor.

Method used

A high-precision air-gap dual-coupled inductor is manufactured using an integrated die-casting process. Through the integrated die-casting process and high-precision air-gap control technology, the core structure of the first and second magnetic cores is integrated, and the air gap size is precisely controlled through a dicing and cutting process.

Benefits of technology

The elimination of core assembly gaps reduces magnetic resistance, improves magnetic shielding and inductance performance, ensures the stability of inductance and coupling coefficient, increases saturation current, and enhances device reliability and safety.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224501657U_ABST
    Figure CN224501657U_ABST
Patent Text Reader

Abstract

The utility model discloses a high accuracy air gap double coupling inductor based on integrated die casting belongs to inductance technical field. The inductor includes the magnetic core casing through integrated die casting, and its first magnetic core and second magnetic core are integrated structure, and the magnetic core casing uses the cutting machine of dividing sheet and cuts the high accuracy air gap, and the first coil and second coil are nested in the magnetic core accommodating cavity, and the pin is exposed. The magnetic core material adopts the mixed pressing of iron nickel powder, iron silicon aluminum powder and glue, and the coil main part is the copper sheet with insulating layer, and the pin exposed part is through the stamping, the bending forming. The utility model discloses through integrated die casting to realize that the first magnetic core and second magnetic core are integrated structure, has promoted the magnetic shielding effect, and through the high accuracy cutting air gap has improved the inductance stability significantly.
Need to check novelty before this filing date? Find Prior Art