公开(公告)号：US20250070742A1

公开(公告)日：2025-02-27

申请号：US18794845

申请日：2024-08-05

Applicant: WiTricity Corporation

Inventor： Nam Hoai Lee

IPC: H03H7/42 ,  H01F1/153 ,  H01F27/28 ,  H01F38/14 ,  H02J50/12

Abstract: A signal filter includes a plurality of laminations forming an annular core, a first bifilar winding wrapped around a first portion of the core, and a second bifilar winding wrapped around a second portion of the core. A wireless power transmitter includes a power input, a power converter coupled to the input and configured to provide high-frequency (HF) current, an output coil, and an output filter between the power converter and the output coil. A wireless power receiver includes an input coil, a power converter coupled to an output and configured to provide current suitable for a load, and an input filter between the input coil and the power converter.

公开(公告)号：US12227818B2

公开(公告)日：2025-02-18

申请号：US16626514

申请日：2018-07-03

Applicant: PROTERIAL, LTD. ,  METGLAS INC.

Inventor： Daichi Azuma ,  Naoki Ito

IPC: C21D9/52 ,  C21D6/00 ,  C22C1/11 ,  C22C45/02 ,  H01F1/153

Abstract: A method of producing an amorphous alloy ribbon having a composition of Fe100-a-bBaSibCc (13.0 atom %≤a≤16.0 atom %, 2.5 atom %≤b≤5.0 atom %, 0.20 atom %≤c≤0.35 atom %, and 79.0 atom %≤(100-a-b)≤83.0 atom %) includes: preparing an alloy ribbon; and, in a state in which the alloy ribbon is tensioned with a tensile stress of from 5 MPa to 100 MPa, increasing a temperature of the alloy ribbon to from 410° C. to 480° C., at an average temperature increase rate of from 50° C./sec to less than 800° C./sec, and decreasing a temperature of the thus heated alloy ribbon to a temperature of a heat transfer medium for temperature-decreasing, at an average temperature decrease rate of from 120° C./sec to less than 600° C./sec, wherein the temperature increase and decrease are performed by contacting the traveling alloy ribbon with a heat transfer medium.

公开(公告)号：US12215398B2

公开(公告)日：2025-02-04

申请号：US17283208

申请日：2019-10-02

Applicant: NIPPON STEEL CORPORATION

Inventor： Shuichi Yamazaki ,  Shinsuke Takatani ,  Hiroyasu Fujii ,  Kazutoshi Takeda

IPC: C23C22/50 ,  C21D8/12 ,  C21D9/46 ,  C23C22/76 ,  C23C22/78 ,  H01F1/147 ,  H01F1/153

Abstract: A coating liquid for forming an insulation coating for grain-oriented electrical steel sheets, which contains boric acid and hydrated silicate particles containing aluminum, and a method for producing a grain-oriented electrical steel sheet comprising applying the coating liquid to a grain-oriented electrical steel sheet after final annealing, and then performing a baking treatment.

公开(公告)号：US20250014814A1

公开(公告)日：2025-01-09

申请号：US18546966

申请日：2023-03-30

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Shengqi CHEN ,  Haifei LOU ,  Zhanfan JIN ,  Jianghao HU

IPC: H01F41/02 ,  B22F1/00 ,  B22F1/052 ,  B22F1/103 ,  B22F3/02 ,  B22F3/24 ,  B22F9/04 ,  C22C45/00 ,  H01F1/153

Abstract: Disclosed are an inductive component and a preparation method therefor and an application thereof. The preparation method comprises the following steps: (1) mixing and granulating a first magnetic alloy powder, a second magnetic alloy powder, and a binder, and then performing pressing, and baking and curing the pressed blank to obtain a magnetic central core; (2) combining the magnetic central core obtained in step (1) with a coil and placing into a mold cavity, injecting a cladding powder slurry, and then baking to obtain a semi-finished component; and (3) coating an insulation layer on the surface of the semi-finished component obtained in step (2), performing paint stripping, and then performing electroplating to form an electrode layer to obtain the inductive component. By performing the low-pressure forming process, the inductive component provided by the present application has the advantages of low basic pressure between the coil and the powder, small change of the DC impedance of the coil and small internal stress of the powder, solving the problems of high interlayer defect rate and interlayer short circuit of the products caused by serious insulation damage of the powder under high pressure in the existing process.

公开(公告)号：US20250010364A1

公开(公告)日：2025-01-09

申请号：US18393822

申请日：2023-12-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Takuma ENOMOTO ,  Junya ABE ,  Kai KITAMURA ,  Hiroyoshi OTAKA

IPC: B22F1/08 ,  B22F1/05 ,  C22C45/02 ,  H01F1/153

Abstract: An amorphous alloy soft magnetic powder contains a particle having a flat shape, has a volume-based average particle diameter of more than 150 μm and 500 μm or less measured by a laser diffraction and scattering particle size distribution analyzer, and has a coercive force of 398 A/m or less, i.e., 5.0 Oe or less. A proportion of particles having a particle diameter of more than 300 μm and 600 μm or less classified by sieving may be 15 mass % or more and 40 mass % or less.

公开(公告)号：US20240347244A1

公开(公告)日：2024-10-17

申请号：US18634412

申请日：2024-04-12

Applicant: NICHIA CORPORATION

Inventor： Ryoya OKAZAKI ,  Jun NISHITSUJI ,  Satoshi ABE ,  Jun AKAMATSU ,  Nobuyoshi IMAOKA

IPC: H01F1/153

CPC classification number: H01F1/15383 ,  H01F1/15308

Abstract: A method of producing a coated soft magnetic material, including: a coating procedure including mixing an aqueous solution containing a phosphate compound and a metal oxoacid compound with a soft magnetic material to form a coating containing a metal phosphorus compound on a surface of the soft magnetic material.

公开(公告)号：US20240278316A1

公开(公告)日：2024-08-22

申请号：US18444820

申请日：2024-02-19

Applicant: SEIKO EPSON CORPORATION

Inventor： Mayu WATANABE

IPC: B22F1/08 ,  B22F1/05 ,  B22F1/065 ,  B22F3/02 ,  B22F3/24 ,  C22C38/00 ,  C22C38/02 ,  C22C38/10 ,  C22C38/12 ,  C22C38/16 ,  H01F1/153

CPC classification number: B22F1/08 ,  B22F1/05 ,  B22F1/065 ,  B22F3/02 ,  B22F3/24 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/10 ,  C22C38/12 ,  C22C38/16 ,  H01F1/15316 ,  B22F2003/248 ,  B22F2301/35 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2999/00 ,  C22C2200/02 ,  C22C2202/02

Abstract: Amorphous alloy soft magnetic powder includes a composition expressed by a composition formula in atomic ratio (FexCo1-x)100−(a+b)(SiyB1-y)aMb, where M is at least one type selected from the group consisting of C, S, P, Sn, Mo, Cu, and Nb, 0.73≤x≤0.85, 0.02≤y≤0.10, 13.0≤a≤19.0, and 0≤b≤2.0; and impurities. The amorphous alloy soft magnetic powder has an average circularity of 0.85 or more, an average aspect ratio of 1.20 or less, and an average particle size of 10 μm or more and 40 μm or less. In the amorphous alloy soft magnetic powder, a rate of decrease D in magnetic permeability accompanying an increase in frequency is 15% or less.

公开(公告)号：US20240249864A1

公开(公告)日：2024-07-25

申请号：US18015730

申请日：2022-06-15

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD.

Inventor： Yuping LI ,  Yunyi ZHANG ,  Yongyang SUN ,  Yuntao JIANG

IPC: H01F1/153 ,  B22F1/142 ,  B22F1/145 ,  B22F9/08 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  H01F1/147 ,  H01F3/08 ,  H01F41/02

CPC classification number: H01F1/15325 ,  B22F1/142 ,  B22F1/145 ,  B22F9/082 ,  C22C38/001 ,  C22C38/005 ,  C22C38/02 ,  C22C38/06 ,  H01F1/14791 ,  H01F3/08 ,  H01F41/0293 ,  B22F2009/0824

Abstract: The present disclosure provides a rare earth ion-doped soft magnetic alloy, a soft magnetic composite material and a preparation method thereof. The rare earth ion-doped soft magnetic alloy is composed of Fe, Si, Al, N and Re, and the Re is a rare earth element; and herein, in the rare earth ion-doped soft magnetic alloy, the content of the Fe is 82-85 wt %, the content of the Si is 8-10 wt %, the content of the Al is 3-5 wt %, the content of the Re is 1-2 wt %, and the content of the N is 0.25-0.65 wt %. Most of the interior of the rare earth ion-doped soft magnetic alloy of the present disclosure is composed of FeSiAl crystal grains, but an appropriate amount of an easy-faced Re—Fe—N compound is dispersed among the FeSiAl crystal grains. Based on such a structure, the rare earth ion-doped soft magnetic alloy of the present disclosure has excellent electromagnetic properties and lower loss under a working condition of MHz.

公开(公告)号：US20240240296A1

公开(公告)日：2024-07-18

申请号：US18413467

申请日：2024-01-16

Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Eun Soo PARK ,  Wookha RYU ,  Kyungjun KIM ,  Kook Noh YOON ,  Wan KIM

IPC: C22C45/02 ,  C22C33/00 ,  H01F1/153

CPC classification number: C22C45/02 ,  C22C33/003 ,  H01F1/15308

Abstract: The present disclosure relates to a complex concentrated soft magnetic amorphous alloy with multi-complex quenched-in nuclei and a method for manufacturing the same, and more specifically, to a complex concentrated soft magnetic amorphous alloy which exhibits low coercivity while improving glass forming ability through the design of configurational entropy control complex alloying composition of a first main element group (Fe, Co, Ni), which determines the degree of magnetization as ferromagnetic metallic elements, a second alloying element group (B, Si, P, C), which facilitates amorphous formation, and a third cluster element group (Ca, Cu, Ag), which forms multi-complex quenched-in nuclei, and a method for manufacturing the same.
The complex concentrated soft magnetic amorphous alloy developed in the present disclosure is characterized by having an excellent switching effect in which the alloy is easily magnetized and demagnetized when a magnetic field is applied and removed by implementing low coercivity. In addition, the present disclosure provides guidelines for alloy development to develop a new alloy with excellent functionality realized by applying a complex concentrated alloy design method to amorphous alloy design. In addition, the present disclosure has presented a step of performing a precise heat treatment based on the (time)-(temperature)-(transformation) curve measurement of the manufactured complex concentrated soft magnetic amorphous alloy, thereby presenting a method capable of effectively controlling an amorphous structure control that has been optimized through the existing trial and error method based on the prediction.

公开(公告)号：US20240229205A9

公开(公告)日：2024-07-11

申请号：US18358154

申请日：2023-07-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Atsushi NAKAMURA ,  Takuma ENOMOTO ,  Kai KITAMURA ,  Junya ABE ,  Masayuki OMOTO

IPC: C22C45/02 ,  H01F1/153 ,  H01F27/255

CPC classification number: C22C45/02 ,  H01F1/1535 ,  H01F27/255 ,  C22C2200/02 ,  C22C2202/02

Abstract: An amorphous alloy soft magnetic powder contains a particle having a composition with a compositional formula (Fe1-xCrx) a (Si1-yBy)100-a-bCb expressed by an atomic ratio, in which 0