公开(公告)号：US12233745B2

公开(公告)日：2025-02-25

申请号：US17765223

申请日：2020-10-02

Applicant: GS Yuasa International Ltd.

Inventor： Naohisa Okamoto ,  Kazuki Sekiya ,  Yasuyuki Hamano ,  Hidetoshi Wada

IPC: B60L58/12 ,  G01R31/367 ,  G01R31/374 ,  G01R31/379

Abstract: An estimation device includes: an acquisition unit that acquires a voltage, a current, and a temperature of a lead-acid battery; a first deriving unit that derives a first SOC and a second SOC that are SOCs of a start point and an end point of an estimation period; a second deriving unit that derives a total amount of an overcharge amount in the estimation period; a third deriving unit that derives an actual measurement error based on a difference between the first SOC and the second SOC and the total amount of the overcharge amount; a first specification unit that specifies an estimation error based on the first SOC, the second SOC, and the temperature, and a relationship between the first SOC, the second SOC, and the temperature of the lead-acid battery, and the estimation error; a second specification unit that specifies an abnormality degree of the actual measurement error based on the derived actual measurement error and the specified estimation error; and an estimation unit that estimates generation of an internal short-circuit of the lead-acid battery based on the abnormality degree.

公开(公告)号：USD1059289S1

公开(公告)日：2025-01-28

申请号：US29886526

申请日：2023-03-09

Applicant: GS Yuasa International Ltd.

Designer： Kazuki Sekiya ,  Takashi Akimoto ,  Hiroto Yamashita

公开(公告)号：US12195211B2

公开(公告)日：2025-01-14

申请号：US17919016

申请日：2021-04-06

Applicant: GS Yuasa International Ltd.

Inventor： Nan Ukumori ,  Daisuke Konishi

IPC: B64U50/31 ,  B64U50/13 ,  B64U50/19 ,  H01M10/48

Abstract: In a method of controlling a flying object 1, from the flying object 1 that includes a flying object propulsion apparatus 16 and an energy storage apparatus 7, 8 having a plurality of energy storage devices 6 and configured to supply electricity to the flying object propulsion apparatus 16, one or a plurality of the energy storage devices 6 are separated.

公开(公告)号：US20250015355A1

公开(公告)日：2025-01-09

申请号：US18710258

申请日：2022-11-21

Applicant: GS Yuasa International Ltd.

Inventor： Jinya Ueda

IPC: H01M10/0569 ,  H01G11/06 ,  H01G11/52 ,  H01G11/60 ,  H01M10/0525 ,  H01M50/431 ,  H01M50/449 ,  H01M50/489

Abstract: A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes: a negative electrode having a negative active material layer containing lithium metal; a positive electrode having a positive active material layer; a nonaqueous electrolyte containing a liquid containing a fluorine atom; and a separator having a substrate layer and an inorganic particle layer layered on a surface of the substrate layer, wherein the surface of the negative active material layer and the surface of the inorganic particle layer are stacked so as to face each other, and the separator has an air permeability of 110 [sec/100 cm3] or more and 450 [sec/100 cm3] or less.

公开(公告)号：US12183929B2

公开(公告)日：2024-12-31

申请号：US17281897

申请日：2019-10-04

Applicant: GS Yuasa International Ltd.

Inventor： Satoru Kawakami ,  Hironori Aida ,  Koki Maeda ,  Yudai Kato

IPC: H01M4/64 ,  H01M4/04 ,  H01M50/538 ,  H01M50/543 ,  H01M10/0525 ,  H01M50/531

Abstract: An energy storage device includes a positive electrode terminal, an electrode assembly, and a positive electrode current collector connecting the positive electrode terminal and the electrode assembly, in which the positive electrode current collector has a terminal connecting portion connected to the positive electrode terminal, an electrode connecting portion connected to the electrode assembly in the first direction, and an intermediate portion connecting the terminal connecting portion and the electrode connecting portion, the intermediate portion is arranged at a position overlapping the terminal connecting portion when viewed in the first direction, and the electrode connecting portion and the terminal connecting portion are arranged on one side of the intermediate portion in the first direction.

公开(公告)号：US20240410956A1

公开(公告)日：2024-12-12

申请号：US18700595

申请日：2022-07-08

Applicant: GS Yuasa International Ltd.

Inventor： Yasuyuki HAMANO

IPC: G01R31/392 ,  G01R31/367 ,  G01R31/379 ,  H01M10/06 ,  H01M10/48

Abstract: A lead-acid storage device includes a lead-acid battery and an estimation device. The estimation device includes an inventory information acquisition unit that acquires inventory information including an inventory period of the lead-acid battery, a storage that stores the inventory information acquired by the inventory information acquisition unit, and an estimation unit that estimates a degradation amount of the lead-acid battery based on the inventory information stored in the storage.

公开(公告)号：US12166206B2

公开(公告)日：2024-12-10

申请号：US17258354

申请日：2019-07-18

Applicant: GS Yuasa International Ltd.

Inventor： Tomonori Kako ,  Masashi Takano ,  Kenta Uehira

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/583 ,  H01M10/0569 ,  H01M10/44 ,  H01M10/48 ,  H01M50/569

Abstract: An aspect of the present invention is a nonaqueous electrolyte energy storage device including: a positive electrode having a positive composite layer including a positive active material; a negative electrode having a negative composite layer including a negative active material; and a nonaqueous electrolyte including a nonaqueous solvent, in which the positive active material includes a lithium-transition metal composite oxide that contains nickel as a transition metal and has a layered α-NaFeO2-type crystal structure, a ratio (N/P) between mass (N) per unit area of the negative active material and mass (P) per unit area of the positive active material is 0.30 or more and 0.45 or less, the nonaqueous solvent contains PC, DEC, and EMC, a content of the PC in the nonaqueous solvent is 25% by volume or more and 55% by volume or less, a total content of the DEC and the EMC in the nonaqueous solvent is 45% by volume or more and 75% by volume or less, and a content of the DEC is equal to or higher than the content of the EMC.

公开(公告)号：US12155060B2

公开(公告)日：2024-11-26

申请号：US17257877

申请日：2019-07-18

Applicant: GS Yuasa International Ltd.

Inventor： Tomonori Kako ,  Kazuki Kawaguchi ,  Shota Ito ,  Jun Oyama ,  Taisei Sekiguchi

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562

Abstract: One aspect of the present invention is an energy storage device including a positive electrode containing: first positive active material particles containing a metal element capable of forming a conductive metal oxide; and second positive active material particles not containing the metal element, in which the first positive active material particles include a nickel-cobalt-manganese-containing lithium-transition metal composite oxide containing lithium, nickel, cobalt, and manganese as constituent elements, and the first positive active material particles are larger in median diameter than the second positive active material particles.

公开(公告)号：US20240379942A1

公开(公告)日：2024-11-14

申请号：US18686166

申请日：2022-08-23

Applicant: GS Yuasa International Ltd.

Inventor： Daisuke ENDO

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525

Abstract: A positive electrode for a nonaqueous electrolyte energy storage device according to one aspect of the present invention includes a first positive active material and a second positive active material having different constituent element compositions from each other, the first positive active material is at least one of primary particles that are not substantially aggregated and secondary particles that are aggregated primary particles and have a ratio of an average particle size to an average primary particle size of 5 or less, an average particle size of the first positive active material is ½ or less of an average particle size of the second positive active material, and the second positive active material is a lithium transition metal composite oxide in which a content of a lithium element with respect to a transition metal element is more than 1.0 in terms of a molar ratio.

公开(公告)号：US12140614B2

公开(公告)日：2024-11-12

申请号：US17802095

申请日：2021-03-10

Applicant: GS Yuasa International Ltd.

Inventor： Yuki Ueda

IPC: G01R19/165 ,  H01M10/48

Abstract: An energy storage apparatus 20 includes: energy storage devices B1 to B4; a cutoff switch 40 that cuts off current of the energy storage device; a parallel circuit 70 including a rectifier element 75 in which a discharge direction is set to a forward direction, the parallel circuit 70 being connected in parallel to the cutoff switch 40; a first current sensor 50 that measures the current of the energy storage devices B1 to B4; a discharge circuit 90 that discharges an inspection current to the first current sensor 50 through a discharge path including the parallel circuit 70 using the energy storage device as a power source; and a controller 80. The controller 80 determines whether the first current sensor 50 correctly measures the current based on a measurement value of the inspection current Ib.