公开(公告)号：US11894560B2

公开(公告)日：2024-02-06

申请号：US17763540

申请日：2020-09-24

Applicant: GS Yuasa International Ltd.

Inventor： Yasunori Mizoguchi ,  Akihito Tsujinaka

IPC: H01M4/66 ,  C22C11/06 ,  H01M10/06

CPC classification number: H01M4/662 ,  C22C11/06 ,  H01M10/06

Abstract: A lead-acid battery includes a positive electrode plate, a negative electrode plate, and an electrolyte solution. The positive electrode plate includes a positive current collector and a positive electrode material. The negative electrode plate includes a negative current collector and a negative electrode material. The positive current collector contains a lead alloy containing Ca and Sn. The content of Ca in the positive current collector is 0.2% by mass or less, and the content of Sn is 0.5% by mass or more. The negative electrode material contains a first organic expander (excluding a lignin compound) containing at least one selected from the group consisting of a unit of a monocyclic aromatic compound and a unit of a bisphenol S compound.

公开(公告)号：US20230402666A1

公开(公告)日：2023-12-14

申请号：US18250502

申请日：2021-09-28

Applicant: GS Yuasa International Ltd.

Inventor： Ryoichi OKUYAMA ,  Kazuya OKABE

IPC: H01M10/48 ,  H01M10/42

CPC classification number: H01M10/48 ,  H01M10/4285

Abstract: An abnormality detection method detects abnormality of an assembled battery including energy storage devices by an abnormality detection device. Each energy storage device contains, as a positive active material, lithium iron phosphate and lithium transition metal oxide that allows insertion and extraction reaction of a lithium ion in a potential range higher than that of the lithium iron phosphate. A ratio of an amount of charge based on a total amount of the lithium transition metal oxide to an amount of charge based on a total amount of the positive active material in a charge-discharge range, in which the energy storage device is used, is 5% or more. The abnormality detection device acquires voltage of each of the energy storage devices near a charge end point in the charge-discharge range where the energy storage device is used and detects abnormality in the assembled battery using the acquired voltage of the energy storage devices.

公开(公告)号：US11843274B2

公开(公告)日：2023-12-12

申请号：US16769846

申请日：2018-12-04

Applicant: GS Yuasa International Ltd.

Inventor： Yuki Imanaka

IPC: H02J7/00 ,  B60L53/62 ,  B60L58/24 ,  H01M10/48

CPC classification number: H02J7/007192 ,  B60L53/62 ,  B60L58/24 ,  H02J7/007182 ,  H01M10/482 ,  H01M10/486

Abstract: This charging control device 50 controls charging of electricity storage elements B1-B4 and is provided with: a plurality of charging paths 61A, 61B leading to the electricity storage elements and connected in parallel with each other; voltage drop elements 64A, 64B and switches 65A, 65B which are connected in series on the charging paths; and a control unit 100. The control unit 100 controls the switches 65A, 65B and thereby switches a charging path not to be energized among the plurality of charging paths 61A, 61B during charging.

公开(公告)号：US20230375633A1

公开(公告)日：2023-11-23

申请号：US18027497

申请日：2021-09-17

Applicant: GS Yuasa International Ltd.

Inventor： Katsuyuki SATO

IPC: G01R31/392 ,  G07C5/10 ,  G01R31/367 ,  G01R31/379

CPC classification number: G01R31/392 ,  G07C5/10 ,  G01R31/367 ,  G01R31/379

Abstract: An information processing device (1) includes: a first acquisition unit (11) that acquires history data of at least one of a current, a voltage, or a temperature of a power storage device mounted on a vehicle; a second acquisition unit (11) that acquires at least one of a use period until replacement of the power storage device or a cause of replacement; a deriving unit (11) that derives determination data based on the history data acquired by the first acquisition unit (11); a setting unit (11) that sets a degree of deterioration at the time of replacement of the power storage device based on at least one of the use period or the cause of replacement acquired by the second acquisition unit (11); and a determination unit (11) that determines a degree of deterioration of the power storage device based on a relationship between determination data and the degree of deterioration obtained by a plurality of other power storage devices in advance, and the determination data of the power storage device to be determined, which is derived by the deriving unit.

公开(公告)号：US20230299604A1

公开(公告)日：2023-09-21

申请号：US18018574

申请日：2021-07-21

Applicant: GS Yuasa International Ltd.

Inventor： Hiromasa MURAMATSU ,  Heisuke NISHIKAWA

IPC: H02J7/00 ,  H01M10/44

CPC classification number: H02J7/007182 ,  H01M10/44 ,  H02J7/0048

Abstract: A control device 4 includes a control unit 41 that terminates discharge of an energy storage device including a negative electrode that contains Li during charge and releases Li during discharge in a case where a capacity limit amount based on a capacity of discharge and an amount of charge is reached, or in a case where voltage reaches termination voltage larger than lower limit voltage of a voltage range in which charge and discharge can be reversibly repeated.

公开(公告)号：US20230259118A1

公开(公告)日：2023-08-17

申请号：US18013251

申请日：2021-06-04

Applicant: GS Yuasa International Ltd.

Inventor： Tomikatsu UCHIHORI

IPC: G05B23/02

CPC classification number: G05B23/0283

Abstract: A network unit includes: a first communication unit that receives state data from a unit that measures a state of an energy storage device; a second communication unit that performs communication via a specific network; a third communication unit that performs communication via a communication medium different from the specific network; an operation unit including a changeover switch; and a control unit that controls communication by the first to third communication units, in which the control unit transmits the state data from the second communication unit according to a setting in the specific network according to a state of the changeover switch, and in which when the network unit is activated with the changeover switch being in a predetermined state, the control unit performs communication connection with a specific communication device by the third communication unit.

公开(公告)号：US20230231406A1

公开(公告)日：2023-07-20

申请号：US18101434

申请日：2023-01-25

Applicant: GS Yuasa International Ltd.

Inventor： Junpei YOKOYAMA

IPC: H02J7/00 ,  H01M10/48

CPC classification number: H02J7/007188 ,  H02J7/005 ,  H01M10/48 ,  B60L53/62

Abstract: A method for acquiring information of a battery cell (11) includes a step (S101) of acquiring information pertaining to performance recovery accompanying the suspension of charging/discharging of the battery cell (11). Control pertaining to the battery cell (11) and estimation of a state of the battery cell (11) can be appropriately performed according to a type of battery cell (11).

公开(公告)号：US11670757B2

公开(公告)日：2023-06-06

申请号：US17046485

申请日：2019-03-26

Applicant: GS Yuasa International Ltd.

Inventor： Akihito Tsujinaka

IPC: H01M4/14 ,  H01M4/62 ,  H01M4/66 ,  H01M4/02

CPC classification number: H01M4/14 ,  H01M4/627 ,  H01M4/66 ,  H01M2004/027 ,  H01M2004/028

Abstract: A negative electrode plate for a lead-acid battery includes a negative electrode current collector and a negative electrode material. The negative electrode material contains an organic expander. The organic expander includes a condensate containing a bisphenol S unit and a phenolsulfonic acid unit.

公开(公告)号：US20230163302A1

公开(公告)日：2023-05-25

申请号：US17910456

申请日：2021-03-10

Applicant: GS Yuasa International Ltd.

Inventor： Kazuki KAWAGUCHI ,  Jun OYAMA ,  Taisei SEKIGUCHI ,  Tomonori KAKO

IPC: H01M4/587

CPC classification number: H01M4/587 ,  H01M2004/027

Abstract: An energy storage device according to an aspect of the present invention includes a negative electrode and a positive electrode, the negative electrode includes a negative substrate and a negative active material layer directly or indirectly layered on the negative substrate, the negative active material layer contains a negative active material, the negative active material contains solid graphite particles as a main component, the aspect ratio of the solid graphite particles is 1 or more and 5 or less, and a negative electrode utilization factor that is the proportion of the amount of charge per mass of the negative active material in a full charge state to a theoretical capacity per mass of graphite is 0.65 or more.

公开(公告)号：US20230155180A1

公开(公告)日：2023-05-18

申请号：US17915128

申请日：2021-03-24

Applicant: GS Yuasa International Ltd.

Inventor： Norio YAMATANI

IPC: H01M10/0585 ,  H01M4/525 ,  H01M4/30

CPC classification number: H01M10/0585 ,  H01M4/525 ,  H01M4/30 ,  H01M2004/028

Abstract: An energy storage device according to one aspect of the present invention includes: an electrode assembly including a positive electrode, a negative electrode, and a separator; a nonaqueous electrolyte; and a case for housing the electrode assembly and the nonaqueous electrolyte, in which the positive electrode contains a positive active material, the positive active material contains a plurality of particles satisfying at least one of conditions (1) and (2) below, and the electrode assembly is in a pressed state. (1) A plurality of primary particles that do not form secondary particles (2) A plurality of secondary particles formed by aggregation of a plurality of primary particles, having a ratio of an average diameter of the secondary particles to an average diameter of the primary particles that form the secondary particles of less than 11