公开(公告)号：US20180174733A1

公开(公告)日：2018-06-21

申请号：US15570520

申请日：2016-05-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NOBUYA MATSUTANI ,  TOSHIYUKI ASAHI ,  JUNICHI KOTANI ,  HIROSHI TOMITA ,  HIDENORI UEMATSU

IPC: H01F27/22 ,  H01F27/02 ,  H01F27/24 ,  H01F27/29

CPC classification number: H01F27/22 ,  H01F27/022 ,  H01F27/24 ,  H01F27/29 ,  H01F37/00

Abstract: A reactor includes a coil body, an exterior case, and a filler. The coil body includes a core and a coil wound around the core. The exterior case includes a metal structure and a resin frame. The metal structure has a bottom surface and a side wall provided to stand upright from the bottom surface. The bottom surface and the side wall of the metal structure are unitarily formed with each other. The frame is disposed at an opposite side to the bottom surface of the metal structure. The exterior case houses the core and the coil. The filler is filled between the exterior case and the coil body.

公开(公告)号：US20220130588A1

公开(公告)日：2022-04-28

申请号：US17428305

申请日：2020-03-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TOSHIYUKI ASAHI ,  JUNICHI KOTANI ,  SHIGEYUKI INAGAKI

IPC: H01F27/24 ,  H01F37/00 ,  H01F30/12 ,  H01F27/28

Abstract: A reactor includes a core and first to fourth coils wound around the core and magnetically coupled to one another. A coupling coefficient K12 between the first and second coils, a coupling coefficient K13 between the first and third coils, and a coupling coefficient K14 between the first and fourth coils satisfy relations K13>K12 and K13>K14; and a coupling coefficient K23 between the second and third coils, a coupling coefficient K24 between the second and fourth coils, and a coupling coefficient K34 between the third and fourth coils satisfy relations K24>K23 and K24>K34. Alternatively, n the core, a width of a first core part in a second direction is shorter than a width of the first core part in a third direction, a width of a second core part in the second direction is shorter than a width of the second core part in a third direction, a width of a third core part in the second direction is shorter than a width of a third shaft in the third direction, and a width of a fourth core part in the second direction is shorter than a width of the fourth core part in a third direction. Alternatively, a straight line crossing respective center axes of the first and fourth coils crosses a straight line crossing respective center axes of the second and third coils at a column part of the core when viewed in the first direction. This reactor hardly decrease an electric power conversion efficiency even at low load.

公开(公告)号：US20220108830A1

公开(公告)日：2022-04-07

申请号：US17428303

申请日：2020-03-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TOSHIYUKI ASAHI ,  JUNICHI KOTANI ,  SHIGEYUKI INAGAKI ,  HIRONORI NAGASAKI

IPC: H01F27/28 ,  H01F27/24 ,  H01F37/00 ,  H01F27/29 ,  H01F27/02

Abstract: A reactor includes a core and first and second coils wound around the core about first and second center axes extended in a first direction, respectively. The core includes first and second core legs disposed inside the first and second coils, respectively. The first and second coils are arranged in a second direction perpendicular to the first direction. The first coil includes a first wound-wire part wound around the first core leg and two first terminal parts extended from both end portions of the first wound-wire part, respectively. The second coil includes a second wound-wire part wound around the second core leg and two second terminal parts extended from both end portions of the second wiring wire part, respectively. The second coil has the same shape and the same dimension as the first coil.