One-piece molded inductor with negative temperature coefficient of loss characteristics and preparation method thereof

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By using passivation and coating processed soft magnetic metal powder, an integrated molded inductor with high inductance value and negative temperature coefficient is prepared, which solves the problems of increased loss and low inductance value at high temperatures in the prior art, and achieves efficient inductance performance.

CN119252644BActive Publication Date: 2025-03-25INNER MONGOLIA UNIV OF TECH

4 Cites 0 Cited by

Patent Information

Application Number: CN202411768047.2
Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner
Filing Date: 2024-12-04
Publication Date: 2025-03-25
Estimated Expiration: 2044-12-04

Application Information

Patent Timeline

04 Dec 2024

Application

CN202411768047.2

25 Mar 2025

Publication

CN119252644B

IPC: H01F41/02; H01F41/04; H01F27/255; H01F27/34; H01F1/147; H01F1/26; H01F1/34

CPC: H01F41/0246; H01F41/04; H01F27/255; H01F27/34; H01F1/14758; H01F1/147; H01F1/26; H01F1/344

Get more patent work done with AI

Run novelty searches—or use them for FTO, design risk, drafting and technical problem-solving.

AI Tagging

Application Domain

Inorganic material magnetism Unwanted magnetic/electric effect reduction/prevention

Explore More Agents

Novelty Search
Search existing technologies and assess novelty
↗
FTO
Analyze whether a product may infringe others' patents
↗
Design FTO
Check prior-design risk for exterior design
↗
Drafting
Draft patent application text based on a technical solution
↗
Find Solutions with TRIZ
Generate feasible solution to solve your technical challenge
↗
IP MCP Servers
Connect trusted patent search and cited evidence to Claude, Cursor or your own AI workflow
↗

AI Technical Summary

Technical Problem

The existing integrated molded inductors have increased losses at high temperatures and have low inductance values, making it difficult to meet the needs of high-frequency and high-precision electronic components.

Method used

Using soft magnetic metal powder, including passivation and coating treatment carbonyl iron powder and aerosolized iron nickel powder, an integrated molded inductor with high inductance value and negative temperature coefficient of loss is prepared through high pressure pressing and staged heat treatment processes.

Benefits of technology

The stability and loss of inductor value at high temperatures are achieved, the conversion efficiency of inductors is improved, and the demand for high-frequency and high-precision electronic components is met.

✦ Generated by Eureka AI based on patent content.

Patent Text Reader

Abstract

The present invention discloses an integrated inductor with a negative temperature coefficient of loss characteristics and a preparation method thereof, comprising: preparation of soft magnetic metal powder: passivation, coating, granulation, and lubricant addition treatment of carbonyl iron powder and atomized iron-nickel powder respectively to obtain two soft magnetic metal powders; pressing the treated atomized iron-nickel powder as the middle column of the integrated inductor, and heat treatment; bonding the middle column in the coil; burying the coil in the treated carbonyl iron powder, pressing and baking to obtain. The integrated inductor obtained by the present invention has a high inductance value, and its loss does not increase with the increase of temperature. Its conversion efficiency at 100°C is higher than 25°C, and it has the characteristics of high inductance and negative temperature coefficient of loss.

Need to check novelty before this filing date? Find Prior Art