公开(公告)号：US20180113174A1

公开(公告)日：2018-04-26

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: G01R31/36 ,  H02J7/00

CPC classification number: G01R31/392 ,  G01R31/3648 ,  G01R31/374 ,  H01M10/443 ,  H01M10/486 ,  H02J7/00 ,  H02J7/0068 ,  H02J7/008 ,  H02J7/0091

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：US20220271550A1

公开(公告)日：2022-08-25

申请号：US17636523

申请日：2020-08-27

Applicant: GS Yuasa International Ltd.

Inventor： Hiroki MATSUI ,  Yuta KASHIWA ,  Seijiro OCHIAI

IPC: H02J7/00 ,  H01M10/48 ,  G01R31/3842

Abstract: The present invention comprises a voltage detection circuit for measuring the voltage of an assembled battery 20 in which power storage elements 100 are serially connected, a current detection resistor for detecting the current in the assembled battery 20, and a CPU 33 for calculating, inter alia, the amount of energization electricity from continuous charging or continuous discharging of the assembled battery 20. The CPU 33 controls input/output for when the assembled battery 20 is charged/discharged so that ΔSOC, which is the value obtained by dividing the amount of energization electricity by the actual capacity of the assembled battery 20, does not exceed an upper limit ΔSOC.

公开(公告)号：US20200264238A1

公开(公告)日：2020-08-20

申请号：US16651904

申请日：2018-10-02

Applicant: GS Yuasa International Ltd.

Inventor： Kazuki FURUKAWA ,  Hiroki MATSUI

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

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：US20180053971A1

公开(公告)日：2018-02-22

申请号：US15556598

申请日：2016-03-30

Applicant: GS Yuasa International Ltd.

Inventor： Hiroki MATSUI ,  Yuta KASHIWA ,  Seijiro OCHIAI ,  Takaaki IGUCHI

IPC: H01M10/44 ,  B60L11/18 ,  H01M4/13 ,  H02J7/00

CPC classification number: H01M10/44 ,  B60L58/12 ,  H01M4/13 ,  H01M10/052 ,  H01M10/441 ,  H01M10/443 ,  H02J7/007

Abstract: An embodiment provides a charge voltage controller for a chargeable and dischargeable energy storage device including an electrode assembly having a positive electrode and a negative electrode, the charge voltage controller configured to control upper limit voltage applied to charge the energy storage device in accordance with at least one of charge time of the energy storage device, current inputted to the energy storage device, temperature of the energy storage device, and a state of charge of the energy storage device, to inhibit potential of the negative electrode from being lower than deposition potential at which metal ions transmitting and receiving an electric charge between the positive electrode and the negative electrode are deposited at the negative electrode.

公开(公告)号：US20200168958A1

公开(公告)日：2020-05-28

申请号：US16778892

申请日：2020-01-31

Applicant: GS Yuasa International Ltd.

Inventor： Hiroki MATSUI ,  Yuta KASHIWA ,  Seijiro OCHIAI ,  Takaaki IGUCHI

IPC: H01M10/44 ,  B60L58/12 ,  H02J7/00 ,  H01M4/13

Abstract: A charge voltage controller for a chargeable and dischargeable energy storage device including an electrode assembly having a positive electrode and a negative electrode, is configured to control upper limit voltage applied to charge the energy storage device in accordance with at least one of charge time of the energy storage device, current inputted to the energy storage device, temperature of the energy storage device, and a state of charge of the energy storage device, to inhibit potential of the negative electrode from being lower than deposition potential at which metal ions transmitting and receiving an electric charge between the positive electrode and the negative electrode are deposited at the negative electrode. The deposition potential is variable in accordance with a state of charge of the energy storage device, and/or charge time of the energy storage device, and/or current inputted to the energy storage device, and/or temperature of the energy storage device.