公开(公告)号：US20240170191A1

公开(公告)日：2024-05-23

申请号：US18552869

申请日：2022-03-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toru IWABUCHI ,  Hitoshi HORIUCHI

IPC: H01F1/26 ,  B22F3/00 ,  H01F27/255 ,  H01F41/02

CPC classification number: H01F1/26 ,  B22F3/00 ,  H01F27/255 ,  H01F41/02

Abstract: A powder magnetic core includes: a metal magnetic substance powder; a binding agent that binds particles of the metal magnetic substance powder; and an insulating powder provided in the binding agent. The insulating powder includes a first insulating powder and a second insulating powder each of which is in a needle shape or a plate shape. A median diameter D50 of the second insulating powder is smaller than a median diameter D50 of the first insulating powder.

公开(公告)号：US20250118467A1

公开(公告)日：2025-04-10

申请号：US18836217

申请日：2022-12-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masaaki TAHARA ,  Toru IWABUCHI ,  Hitoshi HORIUCHI

IPC: H01F1/08 ,  H01F3/08 ,  H01F41/02

Abstract: A dust core includes a metal magnetic powder and a binding agent that binds particles of the metal magnetic powder. The binding agent includes a silicone resin and an epoxy resin. In an elemental analysis of the dust core based on an image of a cross section of the dust core, when a silicon (Si) element and a carbon (C) element are detected on a weight basis at 15 measurement points between the particles of the metal magnetic powder in the image, a difference between a maximum value and a minimum value of x/(x+y) values at the 15 measurement points is at most 0.243, where x denotes an amount of the Si element detected and y denotes an amount of the C element detected.

公开(公告)号：US20240212911A1

公开(公告)日：2024-06-27

申请号：US17913823

申请日：2021-03-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toru IWABUCHI ,  Hitoshi HORIUCHI

IPC: H01F27/255 ,  H01F27/28

CPC classification number: H01F27/255 ,  H01F27/28

Abstract: The inductor includes: a magnetic core member comprising metal magnetic material powder and resin; and a coil member which is a conductor, and has one part embedded inside the magnetic core member and an other part exposed outside the magnetic core member, wherein the magnetic core member has: a filling rate of the metal magnetic material powder of at least 73.5% by volume and at most 80.4% by volume; and a Young's modulus of at least 5.0 GPa and at most 10.5 GPa.