公开(公告)号：US20220166234A1

公开(公告)日：2022-05-26

申请号：US17441164

申请日：2020-03-18

Applicant: GS Yuasa International Ltd.

Inventor： Shigeki HATTORI ,  Masakatsu FUJIMATSU

IPC: H02J7/00

Abstract: A protective circuit for an energy storage device includes: a cutoff switch that cuts off a current of the energy storage device; a drive circuit that drives the cutoff switch; a power source switch provided on a power source line of the drive circuit; and a control unit, in which the control unit switches a control terminal of the cutoff switch from a high potential to a low potential, and then turns off the power source switch.

公开(公告)号：US20230009206A1

公开(公告)日：2023-01-12

申请号：US17756509

申请日：2020-12-02

Applicant: GS Yuasa International Ltd.

Inventor： Masakatsu FUJIMATSU ,  Kiyohiro FUJITA ,  Shigeki HATTORI ,  Akimasa SUGIURA

IPC: H02J7/00 ,  H03K17/0812 ,  H02J7/34 ,  H03K17/0814

Abstract: A protection circuit 60 is provided with: switches 61, 62 positioned on a power line PL of an electricity storage element 22 and a load 12; first protection elements 63, 64, 65 connected in parallel with the switches 61, 62 and absorbing surge caused when the switches 61, 62 open and cut off discharge current; and a second protection element 66 connected in parallel with the load and flowing, back to the load, the surge caused when the switches 61, 62 open and cut off the discharge current.

公开(公告)号：US20240235232A1

公开(公告)日：2024-07-11

申请号：US18561650

申请日：2022-04-13

Applicant: GS Yuasa International Ltd.

Inventor： Atsushi FUKUSHIMA ,  Shigeki HATTORI

IPC: H02J7/00 ,  B60R16/033 ,  H01M10/42

CPC classification number: H02J7/0063 ,  B60R16/033 ,  H01M10/425 ,  H01M2010/4271

Abstract: A control device 130 for an energy storage cell mounted on a vehicle, wherein the energy storage cell 62 includes, with respect to battery performance, a first region and a second region having the lower battery performance than the first region, and the control device 130, in a case where the energy storage cell 62 is shifted from the first region A1 to the second region A2, outputs a signal notifying shifting of the region A to a vehicle control unit 140 that controls the vehicle 10, and after outputting of the signal, the control device 130 maintains a current interruption device 53 that interrupts a current to the energy storage cell 62 in a closed state at least for a predetermined time Tw, thus enabling supply of electricity to the vehicle 10.

公开(公告)号：US20230288488A1

公开(公告)日：2023-09-14

申请号：US18019785

申请日：2021-07-29

Applicant: GS Yuasa International Ltd.

Inventor： Shigeki HATTORI

IPC: G01R31/389 ,  G01R31/3842 ,  H02J7/00

CPC classification number: G01R31/389 ,  G01R31/3842 ,  H02J7/007182

Abstract: An energy storage apparatus includes an energy storage device and a management unit. The management unit: lowers an SOC of the energy storage device by discharge of the energy storage device; acquires current and voltage of the energy storage device while the SOC of the energy storage device is within a predetermined SOC range in a process of raising the SOC of the energy storage device by charge of the energy storage device; and calculates an internal resistance of the energy storage device based on the acquired current and voltage. The SOC range is a range in which a change in voltage of the energy storage device with respect to a change in SOC of the energy storage device is larger than a range in which a value of the SOC is larger than the SOC range.