公开(公告)号：US20170263359A1

公开(公告)日：2017-09-14

申请号：US15500957

申请日：2015-09-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi OHTSUBO ,  Masaaki TANI ,  Takeshi HATTORI ,  Jung hwan HWANG ,  Masashi HARA ,  Shin TAJIMA ,  Naoki IWATA ,  Shinjiro SAIGUSA ,  Kohei ISHII ,  Daisuke OKAMOTO ,  Toshimitsu TAKAHASHI

IPC: H01F3/08 ,  H01F41/02 ,  B22F1/02 ,  C03C8/02 ,  C22C38/06 ,  C03C8/04 ,  C03C8/08 ,  H01F1/147 ,  C22C38/02

CPC classification number: H01F3/08 ,  B22F1/02 ,  C03C8/02 ,  C03C8/04 ,  C03C8/08 ,  C03C2209/00 ,  C22C38/02 ,  C22C38/06 ,  H01F1/147 ,  H01F1/14791 ,  H01F1/24 ,  H01F41/0246

Abstract: A powder magnetic core having excellent specific resistance or strength. The powder magnetic core has soft magnetic particles, first coating layers that coat the surfaces of the soft magnetic particles and include aluminum nitride, and second coating layers that coat at least a part of the surfaces of the first coating layers and include a low-melting-point glass having a softening point lower than an annealing temperature for the soft magnetic particles. The first coating layers including aluminum nitride are excellent in the wettability to the low-melting-point glass which constitutes the second coating layers and suppress diffusion of constitutional elements between the soft magnetic particles and the low-melting-point glass of the second coating layers. The powder magnetic core can stably exhibit a higher specific resistance and higher strength than the prior art owing to such a synergistic action of the first coating layers and second coating layers.

公开(公告)号：US20190214172A1

公开(公告)日：2019-07-11

申请号：US16356696

申请日：2019-03-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masashi OHTSUBO ,  Masaaki TANI ,  Takeshi HATTORI ,  Junghwan HWANG ,  Masashi HARA ,  Shin TAJIMA ,  Shinjiro SAIGUSA ,  Kohei ISHII ,  Daisuke OKAMOTO ,  Toshimitsu TAKAHASHI

IPC: H01F1/33 ,  H01F41/02 ,  H01F1/26 ,  B22F3/02 ,  C21D1/26 ,  B22F1/00 ,  B22F1/02 ,  H01F1/20 ,  B22F3/24 ,  C21D6/00 ,  C22C38/02 ,  C22C38/06

CPC classification number: H01F1/33 ,  B22F1/0003 ,  B22F1/02 ,  B22F3/02 ,  B22F3/24 ,  C21D1/26 ,  C21D6/008 ,  C22C38/02 ,  C22C38/06 ,  H01F1/20 ,  H01F1/24 ,  H01F1/26 ,  H01F41/02 ,  H01F41/0246

Abstract: A dust core includes soft magnetic particles, a first coating layer, a second coating layer, and a third coating layer. The first coating layer is made of aluminum oxide with which at least a part of surfaces of the soft magnetic particles are coated. The second coating layer is made of aluminum nitride with which at least a part of a surface of the first coating layer is coated. The third coating layer is made of low-melting-point glass with which at least a part of a surface of the second coating layer is coated. The low-melting-point glass has a softening point lower than an annealing temperature of the soft magnetic particles.

公开(公告)号：US20240113560A1

公开(公告)日：2024-04-04

申请号：US18457341

申请日：2023-08-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Osamu YAMASHITA ,  Naoki IWATA ,  Shinjiro SAIGUSA ,  Sungmin CHO ,  Katsuya KOBAYASHI ,  Toshiya HASHIMOTO

IPC: H02J50/00 ,  H02J50/12 ,  H02J50/40

CPC classification number: H02J50/005 ,  H02J50/12 ,  H02J50/402

Abstract: A noncontact power supply device is comprised of a plurality of coil units each having a coil for transmitting power to an object for receiving power by noncontact. Furthermore, the coil units are joined together by a bonding agent having rubbery elasticity.

公开(公告)号：US20240088718A1

公开(公告)日：2024-03-14

申请号：US18454065

申请日：2023-08-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Osamu YAMASHITA ,  Naoki IWATA ,  Shinjiro SAIGUSA ,  Sungmin CHO ,  Katsuya KOBAYASHI ,  Toshiya HASHIMOTO

IPC: H02J50/12 ,  H02J50/00

CPC classification number: H02J50/12 ,  H02J50/005

Abstract: A power transmitting coil unit includes a board on which a coil comprised of a conductor pattern is formed and to a back surface side of which capacitors are mounted, a core arranged at a back surface side of the board and formed with a hole at a position facing the capacitors, a bottom plate arranged at a back surface side of the core, a space formed defined by a back surface of the board, a front surface of the bottom plate, and an inner circumferential surface of the hole and in which the capacitors are housed, and support member arranged in the space and supporting the board.

公开(公告)号：US20180137959A1

公开(公告)日：2018-05-17

申请号：US15794577

申请日：2017-10-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinjiro SAIGUSA ,  Naoki IWATA ,  Masafumi SUZUKI ,  Masaaki NISHIYAMA ,  Jung Hwan HWANG ,  Masashi OHTSUBO

IPC: H01F1/147 ,  H01F41/02 ,  B22F1/02

CPC classification number: H01F1/14791 ,  B22F1/02 ,  B22F2301/35 ,  B22F2302/20 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/0264 ,  H01F1/24 ,  H01F3/08 ,  H01F41/0246 ,  B22F1/0088 ,  B22F3/02 ,  B22F2003/248 ,  B22F2003/241 ,  B22F2201/05 ,  B22F2201/02

Abstract: A dust core includes: a plurality of soft magnetic particles each composed of an iron-based alloy containing aluminum, each of a surface of the plurality of soft magnetic particles being coated with an aluminum nitride film; and an aluminum oxide film with which at least the aluminum nitride films located at a surface of the dust core are entirely coated.

公开(公告)号：US20150364235A1

公开(公告)日：2015-12-17

申请号：US14737876

申请日：2015-06-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Daisuke OKAMOTO ,  Kiyotaka ONODERA ,  Shinjiro SAIGUSA ,  Kohei ISHII ,  Masashi OHTSUBO ,  Junghwan HWANG ,  Masaaki TANI ,  Takeshi HATTORI

IPC: H01F1/24 ,  B22F3/12 ,  H01F27/255 ,  H01F1/147 ,  H01F41/02 ,  H01F3/08

CPC classification number: H01F1/24 ,  B22F1/02 ,  B22F2998/10 ,  C22C33/0257 ,  C22C33/0264 ,  H01F1/14791 ,  H01F1/33 ,  H01F3/08 ,  H01F27/255 ,  H01F41/0246 ,  B22F2009/0828 ,  B22F9/08 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10

Abstract: A soft magnetic member is formed such that, when a differential relative permeability in an applied magnetic field of 100 A/m is represented by a first differential relative permeability μ′L, and when a differential relative permeability in an applied magnetic field of 40 kA/m is represented by a second differential relative permeability μ′H, a ratio of the first differential relative permeability μ′L to the second differential relative permeability μ′H satisfies a relationship of μ′L/μ′H≦10, and a magnetic flux density in an applied magnetic field of 60 kA/m is 1.15 T or higher.

Abstract translation: 形成软磁性构件，使得当施加的100A / m的磁场中的微分相对磁导率由第一差分相对磁导率μ'L表示时，并且当施加的磁场中的差分相对磁导率为40kA时 / m由第二微分相对磁导率μ'H表示，第一微分相对磁导率μ'L与第二微分相对磁导率μ'H的比率满足μ'L/μ'H＆nlE; 10的关系，a 60kA / m的施加磁场中的磁通密度为1.15T以上。