公开(公告)号：US20230118313A1

公开(公告)日：2023-04-20

申请号：US18068650

申请日：2022-12-20

Applicant: DENSO CORPORATION

Inventor： Tomomi ASAI ,  Nobuo Yamamoto ,  Hiroyasu Suzuki ,  Katsuki Hayashi ,  Yuya Minabe

IPC: G01R31/392 ,  G01R31/3835 ,  G01R31/367

Abstract: In a deterioration degree determination device for a secondary battery, a battery information acquisition unit acquires battery information related to the secondary battery, and a feasibility determination unit determines feasibility of determination of deterioration degree for each secondary battery based on the battery information and a feasibility determination reference prepared in advance. A battery characteristic acquisition unit acquires a battery characteristic related to transition of a battery state in a predetermined voltage section for the secondary battery for which the determination of the deterioration degree is determined to be feasible by the feasibility determination unit. A deterioration degree determination unit determines the deterioration degree of the secondary battery for which the determination of the deterioration degree is determined to be feasible, based on the battery characteristic acquired by the battery characteristic acquisition unit or a battery characteristic relationship value calculated based on the battery characteristic.

公开(公告)号：US11150309B2

公开(公告)日：2021-10-19

申请号：US16530640

申请日：2019-08-02

Applicant: DENSO CORPORATION

Inventor： Yoshinori Sato ,  Shuhei Yoshida ,  Nobuo Yamamoto ,  Yuta Shimonishi

IPC: G01R31/392 ,  G01R31/367 ,  G01R31/389 ,  H02J7/00

Abstract: An apparatus for estimating a degradation degree of a secondary battery includes a pulse current applying unit that applies a pulse current; a voltage acquiring unit that acquires a charge voltage and a discharge voltage which are produced at the secondary battery by applying the pulse current; a relative value calculation unit that calculates a relative value between the charge voltage and the discharge voltage; a correlation storage unit that stores a correlation between a relative value between the charge voltage and the discharge voltage, and a degradation degree of the secondary battery; and a degradation degree estimation unit that obtains a degradation degree of the secondary battery from the correlation storage unit, based on the relative value calculated by the relative value calculation unit.

公开(公告)号：US10522817B2

公开(公告)日：2019-12-31

申请号：US15522734

申请日：2016-03-10

Applicant: DENSO CORPORATION

Inventor： Yuki Tachibana ,  Yoshinori Satou ,  Nobuo Yamamoto ,  Shigeki Komine ,  Yuta Shimonishi

IPC: H01M10/0525 ,  H01M4/131

Abstract: A positive electrode material includes: Li2NiαM1βM2γMnηO4-ε. α satisfies a relational expression of 0.50

公开(公告)号：US10153486B2

公开(公告)日：2018-12-11

申请号：US15066057

申请日：2016-03-10

Applicant: DENSO CORPORATION

Inventor： Nobuo Yamamoto ,  Yoshinori Satou ,  Shigeki Komine ,  Yuta Shimonishi ,  Yuki Tachibana

IPC: H01M4/505 ,  H01M10/052 ,  H01M4/525 ,  H01M4/36 ,  H01M4/02

Abstract: A positive electrode material includes: Li2NiαM1βM2γMnηO4-ε; a layered structure including a Li layer and a Ni layer; and a chemical bond of M2-O. α satisfies an equation of 0.50

公开(公告)号：US09960425B2

公开(公告)日：2018-05-01

申请号：US15066077

申请日：2016-03-10

Applicant: DENSO CORPORATION

Inventor： Yoshinori Satou ,  Shigeki Komine ,  Nobuo Yamamoto ,  Yuta Shimonishi ,  Yuki Tachibana

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/485 ,  H01M10/0525

CPC classification number: H01M4/525 ,  H01M4/364 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0525

Abstract: A positive electrode material includes: a composite oxide of solid solution including Li2SnO3 and Li2NiαM1βM2γMnνO4-∈. α satisfies an equation of 0.50≤α≤1.35. β satisfies an equation of 0≤β