公开(公告)号：US11417818B2

公开(公告)日：2022-08-16

申请号：US16772020

申请日：2018-12-14

Applicant: NEC CORPORATION

Inventor： Akihiro Kirihara ,  Masahiko Ishida

IPC: H01L37/04 ,  B22F7/02 ,  H01L29/82

Abstract: The purpose of the present invention is to make it possible to ensure a strength that allows thermoelectric evaluation to be performed even when sintering is carried out at a temperature lower than the minimum sintering temperature of a power generation layer, in a thermoelectric conversion element. For this purpose, this thermoelectric conversion element is characterized by being provided with a power generation layer and support layers including a sintered body, wherein the power generation layer is provided with a metal-magnetic insulator composite structure in which metal is formed in a net shape around a granulated magnetic body, the support layers are formed so as to be in contact with the top and bottom or the right and left of the power generation layer, and the minimum sintering temperature of the support layers is lower than the minimum sintering temperature of the power generation layer.

公开(公告)号：US11105376B2

公开(公告)日：2021-08-31

申请号：US16646016

申请日：2018-08-03

Applicant: NEC CORPORATION ,  TOHOKU UNIVERSITY

Inventor： Akihiro Kirihara ,  Masahiko Ishida ,  Koichi Terashima ,  Ryohto Sawada ,  Eiji Saitoh ,  Yasuyuki Oikawa ,  Ryo Iguchi ,  Masao Ono

IPC: F16C19/06 ,  F16C19/18 ,  F16C19/52 ,  F16C33/76 ,  F16C33/78 ,  G01P3/44 ,  F16C41/00

Abstract: In order to determine information about the generation of heat in a bearing (10) in a simple manner, a bearing (10) includes an outer ring (12) secured to a securing member, and an inner ring (11) provided on the inside of the outer ring (12) and secured to a shaft that rotates in the circumferential direction relative to the securing member. A thermal flow sensor (14) is provided as a coating on a securing-side surface that includes the outer ring (12), and generates a thermoelectromotive force including information about frictional heat generated with the rotation of the shaft.

公开(公告)号：US09859486B2

公开(公告)日：2018-01-02

申请号：US14414969

申请日：2013-04-15

Applicant: NEC Corporation

Inventor： Akihiro Kirihara ,  Masahiko Ishida ,  Shigeru Koumoto

IPC: H01L35/28 ,  H01L35/30 ,  H01L35/12 ,  H01L37/00 ,  H01L35/00 ,  H01L43/06 ,  H01L35/04 ,  H01L35/34 ,  H01L43/04 ,  H01L43/14

CPC classification number: H01L37/00 ,  H01L35/00 ,  H01L35/04 ,  H01L35/34 ,  H01L43/04 ,  H01L43/06 ,  H01L43/065 ,  H01L43/14

Abstract: A thermoelectric conversion element includes a thermoelectric conversion sheet possessing flexibility. The thermoelectric conversion sheet includes a magnetic layer, an electricity-generating layer that is formed on the magnetic layer so as to contact with the magnetic layer and that is formed of a material exhibiting spin orbit coupling, and a first electrode and a second electrode formed on the electricity-generating layer so as to contact with the electricity-generating layer. The first electrode and the second electrode extend in a longitudinal direction of the thermoelectric conversion sheet, and are separated from each other in a first direction perpendicular to the longitudinal direction.

公开(公告)号：US12041853B2

公开(公告)日：2024-07-16

申请号：US17296392

申请日：2019-11-14

Applicant: NEC Corporation

Inventor： Akihiro Kirihara ,  Masahiko Ishida ,  Koichi Terashima ,  Yuma Iwasaki ,  Ryohto Sawada ,  Yasutomo Omori

IPC: H10N15/10 ,  F24C3/14

CPC classification number: H10N15/10 ,  F24C3/14

Abstract: A portable power supply according to one or more embodiments includes a combustion device (20) and a heating container (30) that retains an object to be heated, wherein at least a part of a portion of the heating container, the portion being directly heated by the combustion device, is provided with a magnetic metal plate (32) that has spontaneous magnetization and that generates electromotive force due to an anomalous Nernst effect induced by the heating, and wherein electrodes (33a, 33b) for drawing power are provided. Thus, the heating container for generating electricity has a simple configuration, and furthermore the portable power supply is provided with both the heating container and the combustion device.

公开(公告)号：US11917917B2

公开(公告)日：2024-02-27

申请号：US17297243

申请日：2019-12-13

Applicant: NEC Corporation

Inventor： Akihiro Kirihara ,  Yasutomo Omori ,  Ryohto Sawada ,  Masahiko Ishida ,  Koichi Terashima ,  Yuma Iwasaki ,  Hiroko Someya

IPC: C22C38/06 ,  C22C38/18 ,  H10N15/20

CPC classification number: H10N15/20 ,  C22C38/06 ,  C22C38/18 ,  C22C2202/02

Abstract: A thermoelectric conversion element that has a power generation layer containing an iron-aluminum based magnetic alloy material containing equal to or more than 70 weight percent of iron and aluminum in total. The power generation layer generates an electromotive force, due to an anomalous Nernst effect that develops in the magnetic alloy material in response to a temperature gradient applied thereto, in a direction intersecting both the magnetization direction of the magnetic alloy material and the direction of the applied temperature gradient.

公开(公告)号：US11870083B2

公开(公告)日：2024-01-09

申请号：US17286619

申请日：2019-10-25

Applicant: NEC Corporation

Inventor： Akihiro Kirihara ,  Yuma Iwasaki ,  Masahiko Ishida ,  Koichi Terashima ,  Ryohto Sawada

IPC: H01M50/124 ,  H01M50/14 ,  H01M10/48 ,  H01M50/10 ,  H01M50/105 ,  H01M50/119 ,  H01M50/131 ,  H10N15/20

CPC classification number: H01M50/124 ,  H01M10/48 ,  H01M50/10 ,  H01M50/105 ,  H01M50/119 ,  H01M50/131 ,  H01M50/14 ,  H10N15/20 ,  H01M2200/10

Abstract: Provided are an exterior body and an abnormality detector capable of suppressing bulking even when a heat generation detection function is provided. The exterior body of an electronic device generates heat during operation and is characterized by being provided with a magnetic body that is at least a portion of the exterior body, that has spontaneous magnetization, and that generates an electromotive force by exhibiting an abnormal Nernst effect through heat generation of the electronic device, wherein an electrode for extracting power is provided to the magnetic body.

公开(公告)号：US11744469B2

公开(公告)日：2023-09-05

申请号：US16498838

申请日：2018-03-20

Applicant: NEC CORPORATION ,  TOHOKU UNIVERSITY

Inventor： Masahiko Ishida ,  Ryo Iguchi ,  Yuki Shiomi ,  Eiji Saitoh ,  Ryohto Sawada ,  Akihiro Kirihara ,  Koichi Terashima ,  Yasuyuki Oikawa

IPC: A61B5/01 ,  G01K7/02 ,  G06K19/04 ,  G01K13/20 ,  A61B5/00

CPC classification number: A61B5/01 ,  G01K7/02 ,  G01K13/20 ,  G06K19/045 ,  A61B5/0008 ,  A61B5/6801 ,  A61B2560/04 ,  A61B2560/0412 ,  A61B2562/0271

Abstract: In order to enable the measurement of thermal property information about a subject, this thermal diffusion coefficient measuring device, which is used by contacting the surface of a living body, is provided with: a biological information sensor comprising a temperature sensor and a heat flux sensor; and a heating/cooling control means. The temperature sensor is provided at a position contacting the surface of the living body, and operates so as to detect skin temperature. The heat flux sensor is provided at a position contacting the surface of the living body, while being adjacent to the temperature sensor, and operates so as to detect heat flux on the surface of the living body. The heating/cooling control means enables the measurement of the temperature diffusion coefficient of a thermal resistance component that is present between the biological information sensor and a deep inner portion of the living body.

公开(公告)号：US10461238B2

公开(公告)日：2019-10-29

申请号：US14740826

申请日：2015-06-16

Applicant: NEC Corporation

Inventor： Masahiko Ishida ,  Akihiro Kirihara ,  Asuka Fukue

IPC: H01L37/00

Abstract: A thermoelectric conversion structure according to an exemplary aspect of the invention includes a thermoelectric conversion unit structure including a magnetic fine particle including a magnetic material with the spin Seebeck effect arising and an electromotive body with which to cover the magnetic fine particle, wherein a plurality of the thermoelectric conversion unit structures form an aggregate with the electromotive body connecting to each other.

公开(公告)号：US10396267B2

公开(公告)日：2019-08-27

申请号：US15906522

申请日：2018-02-27

Applicant: NEC Corporation

Inventor： Akihiro Kirihara ,  Masahiko Ishida ,  Shigeru Koumoto

IPC: H01L37/04 ,  H01L37/02 ,  H01L37/00 ,  H01L35/34 ,  H01L35/28 ,  H01L35/00 ,  H01L29/82 ,  H01L29/66

Abstract: A thermoelectric conversion element includes: a magnetic body having a magnetization; and an electromotive body formed of material exhibiting a spin orbit coupling and jointed to the magnetic body. The magnetic body has an upper joint surface jointed to the electromotive body. The upper joint surface has concavities and convexities.

公开(公告)号：US10326069B2

公开(公告)日：2019-06-18

申请号：US14762674

申请日：2014-01-17

Applicant: NEC Corporation

Inventor： Masahiko Ishida ,  Akihiro Kirihara ,  Shigeru Koumoto

IPC: H01L35/28 ,  H01L29/82 ,  H01L37/00 ,  H01L29/66 ,  H01L35/04 ,  H01L35/34 ,  H01L35/20 ,  H01L35/22 ,  H01L35/26

Abstract: In order to further improve the spin-current/electric-current conversion efficiency in a spin-current thermoelectric conversion element, a thermoelectric conversion element includes a magnetic material layer having in-plane magnetization; and an electromotive material layer magnetically coupled with the magnetic material layer. The electromotive material layer includes a first conductor with a spin orbit coupling arising, and a second conductor having lower electric conductivity than electric conductivity of the first conductor.