公开(公告)号：US20240177549A1

公开(公告)日：2024-05-30

申请号：US18283135

申请日：2021-03-24

Applicant: NEC Corporation

Inventor： Akihisa SUDOU ,  Daisuke KAWASAKI ,  Kaori YAMANE

IPC: G07C9/00 ,  G06Q10/02 ,  G06Q50/47

CPC classification number: G07C9/00563 ,  G06Q10/02 ,  G06Q50/47

Abstract: An operation management system (100) includes a server apparatus (102) and an operation management apparatus (103). The operation management system (100) includes: a reservation acceptance unit (111) acquiring reservation information including biometric information of a user making a boarding reservation for a vehicle, and a boarding point; a boarding information acquisition unit (120) acquiring boarding information including biometric information of the user generated by a camera (103) equipped on the vehicle and boarding place information indicating the boarding point; and an authentication unit (113) determining whether there is a match of biometric information and a boarding point that are included in each piece of the reservation information and the boarding information.

公开(公告)号：US20200168955A1

公开(公告)日：2020-05-28

申请号：US16611335

申请日：2018-05-17

Applicant: NEC CORPORATION

Inventor： Ikiko SHIMANUKI ,  Takehiro NOGUCHI ,  Daisuke KAWASAKI ,  Takuya HASEGAWA

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M4/38 ,  H01M10/0568 ,  H01M10/0585

Abstract: A purpose of the present invention is to provide a lithium ion secondary battery having improved battery characteristics. The lithium ion secondary battery according to the present invention comprises a negative electrode comprising a negative electrode active material comprising a silicon material and an electrolyte solution comprising an electrolyte solvent comprising an open chain sulfone compound, a fluorinated cyclic carbonate and an open chain carbonate and a supporting salt comprising LiN(FSO2)2.

公开(公告)号：US20190173123A1

公开(公告)日：2019-06-06

申请号：US16095850

申请日：2017-05-23

Applicant: NEC CORPORATION

Inventor： Ikiko SHIMANUKI ,  Daisuke KAWASAKI ,  Hitoshi ISHIKAWA ,  Suguru TAMAI

IPC: H01M10/0525 ,  H01M4/38 ,  H01M10/0567 ,  B60L50/64

Abstract: A lithium ion secondary battery having high energy density and excellent cycle characteristics is provided. The present invention relates to a lithium ion secondary battery comprising a negative electrode comprising a negative electrode active material comprising more than 25% by weight of a silicon alloy and a non-aqueous electrolyte solution comprising more than 10% by weight of a compound represented by LiN(SO2CnF2n+1)2 (wherein n is an integer of 0 or more) and 10% by weight or more of fluoroethylene carbonate (FEC).

公开(公告)号：US20180358610A1

公开(公告)日：2018-12-13

申请号：US15779660

申请日：2016-11-29

Applicant: NEC Corporation

Inventor： Ikiko SHIMANUKI ,  Suguru TAMAI ,  Daisuke KAWASAKI ,  Hitoshi ISHIKAWA

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/48 ,  H01M10/0567 ,  H01M4/62 ,  H01M10/058

Abstract: When the particle size of a silicon material used for a negative electrode active material are small, a large surface area thereof easily causes a side reaction between the active material and an electrolyte solvent to occur, and the cycle characteristics of a lithium ion secondary battery decrease. In order to improve the cycle characteristics, a lithium ion secondary battery according to the present invention is characterized in comprising a negative electrode comprising a material comprising silicon as a constituent element and a polyacrylic acid, and an electrolyte solution comprising a fluoroethylene carbonate, wherein the 50% particle size of the material comprising silicon as a constituent element is 2 μm or less.

公开(公告)号：US20240394630A1

公开(公告)日：2024-11-28

申请号：US18695396

申请日：2021-09-30

Applicant: NEC Corporation

Inventor： Akihisa SUDOU ,  Daisuke KAWASAKI ,  Kaori YAMANE

IPC: G06Q10/0631 ,  G06V40/16 ,  G07C5/00 ,  G07C5/08

Abstract: An information processing apparatus includes: a manager information acquisition unit that acquires manager reliability information indicating reliability of a manager who performs a roll call; and an identification unit that identifies a manager who actually performs the roll call, as a caller, on the basis of the manager reliability information.

公开(公告)号：US20240354689A1

公开(公告)日：2024-10-24

申请号：US18580743

申请日：2021-07-26

Applicant: NEC Corporation

Inventor： Hiromi MUTO ,  Yosuke UMEDA ,  Shiori WATANABE ,  Daisuke KAWASAKI ,  Kaori YAMANE

IPC: G06Q10/083

CPC classification number: G06Q10/083

Abstract: A cooperative delivery assistance system (100) includes a terminal apparatus (101) utilized by a shipper, and a cooperative delivery assistance apparatus (102). The cooperative delivery assistance apparatus (102) includes a delivery condition acquisition unit (106) that acquires a delivery condition of a first package from a first shipper, a candidate extraction unit (110) that extracts, as a candidate package, a candidate of a package to be delivered cooperatively with the first package, from among packages of another shipper, by using the acquired delivery condition, and a display control unit (115) that transmits information for displaying the extracted candidate package in a selectable way.

公开(公告)号：US20240233386A9

公开(公告)日：2024-07-11

申请号：US18274590

申请日：2021-06-17

Applicant: NEC Corporation

Inventor： Daichi SATO ,  Atsushi KITAURA ,  Kenichi ABE ,  Xiaosu DIAO ,  Daisuke KAWASAKI ,  Kaori YAMANE

IPC: G06V20/52

CPC classification number: G06V20/53

Abstract: A congestion degree determination apparatus (2000) acquires a captured image (50) generated by an in-vehicle camera that captures an inside of a target vehicle. The congestion degree determination apparatus (2000) determines, for each of persons (30) present in the target vehicle, an area (20) in which the person (30) is positioned out of a plurality of areas (20) in the target vehicle using the captured image (50). The congestion degree determination apparatus (2000) determines the congestion degree of the target vehicle using the number of the persons (30) positioned in each of two or more of the areas (20).

公开(公告)号：US20180090792A1

公开(公告)日：2018-03-29

申请号：US15560639

申请日：2016-03-22

Applicant: NEC CORPORATION

Inventor： Daisuke KAWASAKI ,  Kenichi SHIMURA ,  Noboru YOSHIDA ,  Kazuhiko INOUE ,  Jiro IRIYAMA

IPC: H01M10/0585 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/04 ,  H01M10/04

CPC classification number: H01M10/0585 ,  H01M2/16 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0413 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2220/20 ,  H01M2300/0028 ,  Y02P70/54 ,  Y02T10/7011

Abstract: The present invention relates to a lithium ion secondary battery comprising a positive electrode having a coating amount per unit area of 50 mg/cm2 or more and an electrode density of 3.3 g/cc or more and a negative electrode having a coating amount per unit area of 24 mg/cm2 or more and an electrode density of 1.5 g/cc or more, a separator having a shrinking ratio of 2% or less by heat treatment at 80° C. for 6 hours, and an electrolyte solution comprising at least one sulfonic acid ester compound, and a ratio of a sulfur content in the central portion (As) and a sulfur content in the edge portion (Bs) of the positive electrode and the negative electrode, in each, is 0.7≦As/Bs≦1.1.

公开(公告)号：US20240386088A1

公开(公告)日：2024-11-21

申请号：US18691551

申请日：2021-09-30

Applicant: NEC Corporation

Inventor： Daisuke KAWASAKI

IPC: G06F21/32

Abstract: Authentication terminal includes first acquisition unit, second acquisition unit, authentication unit, and service providing unit. The first acquisition unit acquires first biometric information of user and determining data to determine whether or not to provide service when distance between own terminal and the user reaches first distance. The second acquisition unit acquires second biometric information of the user when the distance between own terminal and the user reaches second distance. The authentication unit authenticates the user based on first verification using the first biometric information and the second biometric information and second verification using the determining data. The service providing unit provides the service to person who has been successfully authenticated when result of authentication is successful. When the result of the authentication is failure, the service providing unit determines action to be taken according to which of the first verification or the second verification has failed.

公开(公告)号：US20210057721A1

公开(公告)日：2021-02-25

申请号：US16767286

申请日：2018-11-21

Applicant: NEC CORPORATION

Inventor： Daisuke KAWASAKI ,  Takashi OHTSUKA ,  Kazuhiko INOUE

IPC: H01M4/134 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/38 ,  H01M4/66 ,  H01M4/62 ,  H01M10/0569 ,  H01M10/0567

Abstract: Provided is a lithium ion secondary battery having high energy density and excellent cycle characteristics, and hardly causing burning. The present invention relates to a lithium ion secondary battery comprising an electrode mixture layer comprising an electrode active material comprising Si alloy having a median diameter of 1.2 μm or less and 12% by weight or more and 50% by weight or less of an electrode binder; and an electrolyte solution comprising 60% by volume or more and 99% by volume or less of a phosphoric acid ester compound, 0% by volume or more and 30% by volume or less of a fluorinated ether compound, and 1% by volume or more and 35% by volume or less of a fluorinated carbonate compound, wherein the total amount of the phosphoric acid ester compound and the fluorinated ether compound is 65% by volume or more.