公开(公告)号：US20250047664A1

公开(公告)日：2025-02-06

申请号：US18691123

申请日：2021-09-29

Applicant: NEC Corporation

Inventor： Kyohei SAKAKI ,  Shin OGURA ,  Daisuke KAWASAKI ,  Kaori YAMANE ,  Osamu SAKAGUCHI

IPC: H04L9/40

Abstract: System includes authentication terminal, server apparatus, and terminal. The terminal stores first biometric information of user and qualification information on qualification required to receive service from the authentication terminal. When the terminal is ready to communicate with the authentication terminal, the terminal transmits user information notification including first biometric information and qualification information to the authentication terminal. When the authentication terminal provides the service to the user, the authentication terminal acquires second biometric information of the user and identifies the user to be provided the service by matching processing using acquired second biometric information and first biometric information included in user information notification. The authentication terminal transmits qualification information of the identified user to the server apparatus. The server apparatus determines validity of qualification information and transmits result of the determination to the authentication terminal. The authentication terminal provides the service to the user when qualification information is valid.

公开(公告)号：US20240378549A1

公开(公告)日：2024-11-14

申请号：US18689538

申请日：2021-09-16

Applicant: NEC Corporation

Inventor： Kohei SUGA ,  Daisuke KAWASAKI ,  Kaori YAMANE

IPC: G06Q10/0836

Abstract: A delivery control apparatus (101) includes a delivery request acquisition unit (109) that acquires, from an addressee terminal, a delivery request including first identification information for identifying a package, a responsibility request unit (110) that transmits a responsibility request for delivery of the package to a delivery person terminal, a first authentication unit (111) that performs biometric authentication of a delivery person, based on biometric information acquired from the delivery person terminal of the delivery person who responds to the responsibility request, and a responsibility notification unit (113) that transmits, to the delivery person terminal, second identification information for proving that the delivery person is a person in charge of delivery of the package, when the biometric authentication of the delivery person has succeeded.

公开(公告)号：US20240135716A1

公开(公告)日：2024-04-25

申请号：US18274590

申请日：2021-06-16

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：US20190051928A1

公开(公告)日：2019-02-14

申请号：US16079676

申请日：2017-02-22

Applicant: NEC Corporation

Inventor： Daisuke KAWASAKI ,  Takashi OHTSUKA ,  Suguru TAMAI ,  Noboru YOSHIDA ,  Shinya SUDO

IPC: H01M10/0525 ,  H01M10/0566 ,  H01M4/583 ,  H01M4/62 ,  H01M4/38 ,  H01M10/058

Abstract: A negative electrode active material constituting a lithium ion secondary battery having high energy density and excellent cycle characteristics, and a negative electrode and a lithium ion secondary battery comprising the same are provided. The present invention relates to a negative electrode active material comprising graphite particles and crystalline silicon particles, wherein a median diameter of the crystalline silicon particles is 0.7 μm or less, and a weight ratio of the crystalline silicon particles to the total weight of the graphite particles and the crystalline silicon particles is 1 wt % or more and 25 wt % or less.

公开(公告)号：US20180115015A1

公开(公告)日：2018-04-26

申请号：US15560833

申请日：2016-03-24

Applicant: NEC Corporation

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

IPC: H01M10/0525 ,  H01M4/587 ,  H01M4/38 ,  H01M4/36 ,  H01M4/48 ,  H01M2/16 ,  B60L11/18

CPC classification number: H01M10/0525 ,  B60L50/64 ,  H01M2/16 ,  H01M2/1653 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/364 ,  H01M4/38 ,  H01M4/386 ,  H01M4/48 ,  H01M4/483 ,  H01M4/587 ,  H01M10/058 ,  H01M2004/027 ,  H01M2220/20 ,  Y02T10/7011

Abstract: Provided is a lithium ion secondary battery with high safety and high energy density which solves a concern about the safety, when a large amount of metal is used in a negative electrode active materials to achieve higher energy density and therefore an acceptable amount of lithium in a carbon material of the negative electrode is smaller than a releasable amount of lithium in a positive electrode active material. The present invention relates to a lithium ion secondary battery, wherein the positive electrode has a charge capacity per unit area of 3 mAh/cm2 or more, the negative electrode comprises a metal and/or a metal oxide and a carbon as negative electrode active materials, the acceptable amount of lithium in the carbon in the negative electrode is less than the releasable amount of lithium from the positive electrode, and the separator has a thermal shrinkage coefficient of less than 3% at a boiling point of the electrolyte solution in the electrolyte solution.

公开(公告)号：US20180076479A1

公开(公告)日：2018-03-15

申请号：US15560373

申请日：2016-03-22

Applicant: NEC CORPORATION

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

IPC: H01M10/0525 ,  H01M4/38 ,  H01M4/36 ,  H01M4/02 ,  H01M2/14 ,  H01M2/16

CPC classification number: H01M10/0525 ,  H01M2/145 ,  H01M2/1626 ,  H01M2/1633 ,  H01M2/1653 ,  H01M4/02 ,  H01M4/131 ,  H01M4/364 ,  H01M4/38 ,  H01M4/525 ,  H01M10/04 ,  H01M10/0567 ,  H01M10/058 ,  Y02T10/7011

Abstract: The present invention relates to a lithium ion secondary battery comprising an electrode element comprising a positive electrode, a negative electrode and a separator, and an electrolyte solution, wherein the separator has a shrinking ratio of 2% or less by heat treatment at 90 ° C. for 6 hours, and a contest of physically adsorbed water of the electrode element is 2% by mass or less, or a content of chemically adsorbed water in a positive electrode active material layer of the positive electrode is 1% by mass or less.

公开(公告)号：US20160285091A1

公开(公告)日：2016-09-29

申请号：US14442141

申请日：2013-10-28

Applicant: NEC CORPORATION

Inventor： Jiro IRIYAMA ,  Daisuke KAWASAKI ,  Emiko FUJII ,  Shin SERIZAWA ,  Hiroo TAKAHASHI

IPC: H01M4/485 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/485 ,  H01M4/0445 ,  H01M4/0459 ,  H01M4/1391 ,  H01M10/0525 ,  H01M2004/027

Abstract: A negative electrode active material comprising silicon oxide satisfying the following Equation 1 and Equation 2 when solid state NMR (29Si-DDMAS) of silicon is measured for the silicon oxide after performing charging at least once is excellent in the performance as a negative electrode active material for a lithium secondary battery; 0.42≦S1/(S1+S2+S3)≦0.55  (Equation 1) 0.21≦S3/(S1+S2+S3)≦0.26,  (Equation 2) in which S1 is a sum of peak areas of a group of signals assigned to Si having a Si—Si bond and having peaks at 0 to −15 ppm, −55 ppm, −84 ppm and −88 ppm, S2 is a sum of peak areas of a group of signals assigned to Si having a Si(OH)4-n(OSi)n (n=3, 4) structure and having peaks at −100 ppm and −120 ppm, and S3 is a sum of peak areas of a group of signals assigned to Si having a Si(OLi)4-n(OSi)n (n=0, 1, 2, 3) structure and having peaks at −66 ppm, −74 ppm, −85 ppm and −96 ppm.

Abstract translation: 其中S1是分配给具有Si-Si键的Si并且在0至-15ppm，-55ppm，-84ppm和-88ppm具有峰值的一组信号的峰值面积之和，S2是 分配给具有Si（OH）4-n（OSi）n（n = 3,4）结构并在-100ppm和-120ppm具有峰值的Si的一组信号的峰值面积，S3是峰值 分配给具有Si（OLi）4-n（OSi）n（n = 0,1,2,3）结构并具有在-66ppm，-74ppm，-85ppm的峰和 -96ppm。

公开(公告)号：US20160028123A1

公开(公告)日：2016-01-28

申请号：US14771749

申请日：2014-02-28

Applicant: NEC CORPORATION

Inventor： Daisuke KAWASAKI ,  Ikiko SHIMANUKI ,  Noboru YOSHIDA

IPC: H01M10/0569 ,  H01M10/0525

CPC classification number: H01M10/0569 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2300/0034 ,  Y02T10/7011

Abstract: A nonaqueous electrolyte solution secondary battery having an electrode element having a positive electrode and a negative electrode disposed so as to face each other, a nonaqueous electrolyte solution, and an outer package housing the electrode element and the nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution contains a cyclic sulfonic acid ester represented by the general formula (1), and a positive electrode active material in the positive electrode is a mixture of a lithium manganese composite oxide having a spinel structure and a lithium transition metal composite compound having a layered rock salt structure. wherein, in the formula (1), R1 and R2 are each independently a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a halogen group or an amino group with the proviso that R1 and R2 are not hydrogen atoms at the same time; R3 represents a linkage group selected from the group consisting of an alkylene group having 1 to 5 carbon atoms, a carbonyl group, a sulfonyl group, a fluoroalkylene group having 1 to 6 carbon atoms, and a divalent group having 2 to 6 carbon atoms in which alkylene units or fluoroalkylene units are bonded through an ether group.

Abstract translation: 一种非水电解液二次电池，具有将正极和负极相对配置的电极元件，非水电解质溶液和容纳电极元件和非水电解质溶液的外包装体，其中，非水电解液 含有由通式（1）表示的环状磺酸酯，正极中的正极活性物质是具有尖晶石结构的锂锰复合氧化物和具有层状岩盐的锂过渡金属复合化合物的混合物 结构体。 其中，在式（1）中，R 1和R 2各自独立地为氢原子，具有1至5个碳原子的烷基，卤素基团或氨基，条件是R 1和R 2不在相同的氢原子 时间; R3表示选自碳原子数1〜5的亚烷基，羰基，磺酰基，碳原子数1〜6的氟代亚烷基，碳原子数2〜6的2价的基团的连接基团， 哪个亚烷基单元或氟亚烷基单元通过醚基键合。