Soft magnetic alloy, wireless power transmitting apparatus, and wireless power receiving apparatus including the same

Patent metadata

Field	Value
Publication number	US-10594141-B2
Application number	US-201514943286-A
Country	US
Kind code	B2
Filing date	Nov 17, 2015
Priority date	Nov 17, 2014
Publication date	Mar 17, 2020
Grant date	Mar 17, 2020

Abstract

The present invention relates to a soft magnetic alloy and, more specifically, to a soft magnetic alloy used in electric transformers, pulse generators, compressions, electric chokes, energy-accumulating inductors, magnetic sensors, or the like, and a wireless power transmitting apparatus and wireless power receiving apparatus including the soft magnetic alloy.

First claim

What is claimed is:

1. A soft magnetic alloy, consisting of a composition expressed by a formula:
Fe a X b Y c ,
wherein X represents a first metalloid element, Y represents a second metalloid element and a content of the first and second metalloid elements (X+Y) is in the range of 9 to 15.5 at %, and
wherein the composition consists of Fe, X, and Y,
wherein the first metalloid element is B and the second metalloid element is Si,
wherein a is in the range of 84.5 to 91.0 at %, b is in the range of 5.3 to 9.0 at %, and c is in the range of 3.8 to 6.5 at %, and
wherein B/Si, which is a content ratio of B and Si, is 1.4 so that the amount of saturated magnetic induction of the soft magnetic alloy is in the range of 1.78˜1.95 T, a resistivity of the soft magnetic alloy is in the range of 45.7˜52.6μΩ·cm, and a saturated Magnetization is in the range of 182.2˜199.2 emu/g so as to be used at frequency band in the range of 110 kHz˜250 kHz.

2. The soft magnetic alloy of claim 1 , wherein a content of the first and second metalloid elements (X+Y) is in a range of from 12.65 at % to 15.5 at %.

3. The soft magnetic alloy of claim 1 , wherein the soft magnetic alloy is thermally treated by annealing at a temperature between 350° C. and 400° C.

Assignees

• Lg Innotek Co Ltd

Inventors

• Bae Seok
• Song Ji Yeon
• Moon Won Ha
• Yeom Jai Hoon
• Lee Sang Won
• Lee Jong Hyuk

Classifications

• C22C38/02 Primary

  containing silicon · CPC title

• C22C38/06 Primary

  containing aluminium · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• C22C38/002

  containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60 · CPC title

• H02J50/10

  using inductive coupling · CPC title