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Powder magnetic core, coil component, and method for manufacturing powder magnetic core

A powder magnetic core and manufacturing method technology, applied in the direction of inductance/transformer/magnet manufacturing, magnetic core/yoke, transformer/inductance parts, etc., can solve the problems of increasing reactive power and decreasing power factor, etc. Achieve the effect of reducing core loss and loss

Active Publication Date: 2017-10-20
HITACHI METALS LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the power factor drops and causes the reactive power to become larger, and also generates higher harmonic noise

Method used

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  • Powder magnetic core, coil component, and method for manufacturing powder magnetic core
  • Powder magnetic core, coil component, and method for manufacturing powder magnetic core
  • Powder magnetic core, coil component, and method for manufacturing powder magnetic core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0088] [Example Using Amorphous Alloy Ribbon]

[0089] (Production of Amorphous Alloy Ribbon Pulverized Powder)

[0090] As the Fe-based amorphous alloy ribbon, a Metglas (registered trademark) 2605SA1 material manufactured by Hitachi Metals, Ltd. with an average thickness of 25 μm was used. The 2605SA1 material is a Fe-Si-B-based material. 10 kg of this Fe-based amorphous alloy thin ribbon was wound around a hollow core. The Fe-based amorphous alloy ribbon was heated at 360° C. for 2 hours in an oven in a dry atmosphere to embrittle it. After cooling the rolled body taken out of the oven, it pulverizes using different pulverizers of coarse pulverization, medium pulverization, and fine pulverization in this order. The obtained alloy ribbon pulverized powder was passed through a sieve having a hole diameter of 106 μm (a diagonal of 150 μm). At this time, about 80% by mass passed through the sieve. Then, the alloy ribbon pulverized powder that had passed through was removed...

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Abstract

In the powder magnetic core composed of soft magnetic material powder and the coil component using the powder magnetic core, a structure suitable for reducing core loss can be provided. The powder magnetic core is made of soft magnetic material powder, and is characterized in that Cu is dispersed among the soft magnetic material powder. Preferably, the soft magnetic material powder is pulverized powder of soft magnetic alloy ribbon, and it is characterized in that Cu is dispersed between the pulverized powder of soft magnetic alloy ribbon. In addition, it is also preferred that the soft magnetic alloy ribbon is an Fe-based nanocrystalline alloy ribbon or an Fe-based alloy ribbon with a Fe-based nanocrystalline structure, and the pulverized powder has a nanocrystalline structure.

Description

technical field [0001] The present invention relates to a powder magnetic core, a coil component using the powder magnetic core, and a method of manufacturing the powder magnetic core, which is applied to a PFC circuit used in home appliances such as televisions and air conditioners, for example on, or applied to solar power generation or power supply circuits of hybrid vehicles, electric vehicles, etc. Background technique [0002] The front part of the power supply circuit of home appliances is composed of an AC / DC converter circuit that converts AC (alternating current) voltage to DC (direct current) voltage. As far as is currently known, generally speaking, there will be a phase shift between the waveform of the input current and the voltage waveform input into the converter circuit, or the phenomenon that the current waveform itself is not a sine wave. Therefore, the power factor drops and causes reactive power to become large, and also generates high-order harmonic no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/20B22F1/00B22F1/02B22F3/00C22C33/02C22C45/02H01F1/153H01F1/24H01F1/33H01F27/255H01F41/02B22F1/08B22F1/10B22F1/16
CPCC22C45/02B22F9/002B22F9/04C22C33/0278H01F3/08H01F1/15333H01F41/0246B22F1/16B22F1/10B22F1/08H01F1/24H01F1/33H01F27/255H01F1/28H01F1/15308H01F1/1535H01F27/28B22F3/02C22C33/02H01F1/22
Inventor 加藤哲朗野口伸西村和则
Owner HITACHI METALS LTD
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