公开(公告)号：US11644514B2

公开(公告)日：2023-05-09

申请号：US16651904

申请日：2018-10-02

Applicant: GS Yuasa International Ltd.

Inventor： Kazuki Furukawa ,  Hiroki Matsui

IPC: G01R31/392 ,  H01M10/42 ,  H01M10/48

CPC classification number: G01R31/392 ,  H01M10/4285 ,  H01M10/48

Abstract: A deterioration amount estimation device includes a calculation unit (CPU33) that calculates a deterioration amount of an energy storage device and an estimation unit (CPU33) that estimates a transient deterioration amount based on a deterioration amount calculated by the calculation unit and a continuous deterioration amount that does not decrease with time and continues. The transient deterioration amount is estimated, and the input/output of the energy storage device is limited to suppress an increase in the continuous deterioration amount.

公开(公告)号：US10527681B2

公开(公告)日：2020-01-07

申请号：US15557372

申请日：2016-03-30

Applicant: GS Yuasa International Ltd.

Inventor： Kazuki Furukawa ,  Hiroki Matsui ,  Seijiro Ochiai ,  Takaaki Iguchi

IPC: G01R31/392 ,  G01R31/374 ,  G01R31/36 ,  H02J7/00

Abstract: It is an object of an embodiment to provide a degradation estimator for an energy storage device, configured to estimate degradation of the energy storage device, an energy storage apparatus, an input-output control device for the energy storage device, and a method for controlling input and output of the energy storage device. The embodiment includes estimating a temporary power decrease rate of the energy storage device in accordance with at least one of an average load, a maximum load, and a ΔSOC obtained from detected current of the energy storage device and detected temperature of the energy storage device.

公开(公告)号：US10976370B2

公开(公告)日：2021-04-13

申请号：US16337615

申请日：2017-09-28

Applicant: GS YUASA INTERNATIONAL LTD.

Inventor： Kazuki Furukawa ,  Tsubasa Matsuyoshi ,  Suguru Kozono

IPC: G01R31/36 ,  G01R31/389 ,  G01R31/392 ,  H01M10/48 ,  H02J7/00 ,  B60L50/60 ,  B60K6/28

Abstract: An SOC estimation device 50 of an energy storage device includes a storage unit 73 and a data processing unit 71. The energy storage device 100 has a characteristic including a first deterioration mode in which a capacity drop with respect to time indicates a first transition, and a second deterioration mode in which a capacity drop indicates a second transition. The storage unit 73 holds first correlation data M1 indicating a correlation between SOC and OCV of the energy storage device in the first deterioration mode, and second correlation data M2 indicating a correlation between SOC and OCV of the energy storage device in the second deterioration mode. The data processing unit 71 executes a mode determination process of determining a deterioration mode of the energy storage device, and an estimation process of selecting correlation data corresponding to the deterioration mode from the storage unit, to estimate SOC of the energy storage device.