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Title:
INTEGRATED CO-FIRED INDUCTOR AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/116874
Kind Code:
A1
Abstract:
The present application provides an integrated co-fired inductor and a preparation method therefor. The preparation method comprises: batch filling a magnetic powder in the mold cavity, embedding at least one wire into one layer of the magnetic powder, the two ends of the wire extending out of the mold cavity, and sequentially performing compression molding and heat treatment to obtain a magnetic core, and bending and tinning the wire extending out of the magnetic core to obtain the co-fired inductor. The preparation method of the present application uses an integrated mold forming process to prepare the inductor to avoid an assembly process involving an excessive number of components; heat treatment is performed after the integral forming process, stress is fully released, material hysteresis loss is reduced, and the loss of the device under light load conditions is reduced; no extra gap exists between the wire and the magnetic core, air gaps are uniformly distributed within the magnetic core, and the vibration noise of eddy current loss is reduced.

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Inventors:
HAN XIANGHUA (CN)
ZHANG CONG (CN)
JIN ZHIHONG (CN)
XU JUN (CN)
WANG LINKE (CN)
ZHANG NING (CN)
Application Number:
PCT/CN2021/132664
Publication Date:
June 09, 2022
Filing Date:
November 24, 2021
Export Citation:
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Assignee:
HENGDIAN GROUP DMEGC MAGNETICS CO LTD (CN)
International Classes:
H01F41/00; H01F37/00
Foreign References:
CN112435845A2021-03-02
CN213877803U2021-08-03
CN102915825A2013-02-06
CN109285682A2019-01-29
CN109961936A2019-07-02
CN106298130A2017-01-04
US20190295760A12019-09-26
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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