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公开(公告)号：US12300791B2
公开(公告)日：2025-05-13
申请号：US17279134
申请日：2019-09-26
Applicant: GS Yuasa International Ltd.
Inventor： Taro Yamafuku , Kenta Nakai , Jun Oyama
IPC: H01M10/0587 , H01G11/22 , H01G11/52 , H01G11/58 , H01G11/84
Abstract: Provided is a method for manufacturing an energy storage device including an electrode that has an active material layer, an electrolyte solution, and a case. According to the present embodiment, the method including injecting an electrolyte solution in a predetermined amount into a case is characterized in that the predetermined amount is an amount such that, an alkali metal or an alkaline earth metal at least partially comes into contact with a free electrolyte solution that is the electrolyte solution excluding the electrolyte solution soaking into the electrode assembly in the case, with the case housing therein: the alkali metal or the alkaline earth metal of an ion supply member that has the alkali metal or the alkaline earth metal disposed on a conductive member other than the active material layer; and an electrode assembly including the stacked electrode that has electrical conduction to the conducive member of the ion supply member.
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公开(公告)号：US20250149764A1
公开(公告)日：2025-05-08
申请号：US18833387
申请日：2023-01-19
Applicant: GS Yuasa International Ltd.
Inventor： Yosuke NISHIMURA , Minoru WATANABE
IPC: H01M50/588 , H01G11/10 , H01M50/209 , H01M50/264 , H01M50/593
Abstract: An energy storage apparatus includes: energy storage devices; an elongating member adjacent to the energy storage devices in a first direction; and an insulating member disposed between the energy storage devices and the elongating member. The elongating member includes a first main-body portion and a first piece, the first main-body portion extends in a second direction and a third direction, the first piece elongates from an end of the first main-body portion toward the first direction and elongates in the third direction, the first main-body portion and the first piece are disposed along the energy storage devices, the insulating member includes a second main-body portion and a second piece, the second main-body portion extends along the first main-body portion, the second piece is coupled to an end of the second main-body portion and extends along the first piece, and the first piece and the second piece engage with each other.
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公开(公告)号：US12261290B2
公开(公告)日：2025-03-25
申请号：US17288785
申请日：2019-10-25
Applicant: GS Yuasa International Ltd.
Inventor： Ryo Harada , Akira Kishimoto
IPC: H01M4/02 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0568
Abstract: A nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte, the positive electrode containing, as a positive active material, a lithium transition metal composite oxide having an α-NaFeO2 type crystal structure, a molar ratio of Li to Me, Li/Me of more than 1, Me representing transition metal elements including Ni and Mn or including Ni, Mn, and Co, and a molar ratio of Mn to Me, Mn/Me of 0.40 or more and 0.65 or less, and the nonaqueous electrolyte containing, as an electrolyte salt, LiPF6 and a lithium imide salt.
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公开(公告)号：US12259776B2
公开(公告)日：2025-03-25
申请号：US17604885
申请日：2019-04-24
Applicant: GS Yuasa International Ltd.
Inventor： Shogo Nakamura , Shintaro Gamo
IPC: G06F1/32 , G06F1/3212 , G06F1/3296 , H01M10/48
Abstract: A maintenance method for a power storage system wherein: in a bank in which multiple modules, each comprising multiple lithium-ion battery cells connected to each other, are serially connected, a voltage sensor measures voltage values of the cells; a module containing a cell having the lowest voltage value in the hank is identified; and the capacity of the identified module or of the cell having the lowest voltage value is measured.
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公开(公告)号：US20250087703A1
公开(公告)日：2025-03-13
申请号：US18959544
申请日：2024-11-25
Applicant: GS Yuasa International Ltd.
Inventor： Satoru KAWAKAMI , Hironori AIDA , Koki MAEDA , Yudai KATO
IPC: H01M4/64 , H01M4/04 , H01M10/0525 , H01M50/531 , H01M50/538 , H01M50/543
Abstract: An energy storage device includes an electrode terminal, an electrode assembly, and a current collector connecting the electrode terminal and the electrode assembly. The current collector includes a terminal connecting portion connected to the electrode terminal, an electrode connecting portion connected to the electrode assembly in a first direction, and an intermediate portion that connects the terminal connecting portion and the electrode connecting portion. The intermediate portion is positioned at a position overlapping the terminal connecting portion when viewed in the first direction. The intermediate portion includes an intermediate portion first surface opposite to a surface facing the terminal connecting portion of the intermediate portion. The electrode connecting portion includes an electrode connecting portion first surface, at which the electrode assembly and the electrode connecting portion are connected, the electrode connecting portion first surface being shifted from the intermediate portion first surface in the first direction.
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Patent Agency Ranking
公开(公告)号：US12241937B2
公开(公告)日：2025-03-04
申请号：US17765597
申请日：2020-10-02
Applicant: GS Yuasa International Ltd.
Inventor： Muhammad Syahid Fitri Bin Azahar , Yasuyuki Hamano
IPC: G01R31/379 , G01R31/367 , G01R31/392
Abstract: An estimation device includes: a derivation unit deriving a derivation history based on a current, a voltage and a temperature of a lead-acid battery; a first specifying unit specifying a specific gravity of an electrolyte solution; a second specifying unit specifying at least one of: a first degree of softening of a positive electrode material; a second degree of corrosion of a positive electrode grid; a third degree of sulfation of a negative electrode; and a fourth degree of shrinkage of a negative electrode material based on the specified specific gravity, the derived derivation history, and at least one of respective first-third relationships between the specific gravity, respective first-third histories and the respective first-third degrees, and a fourth relationship between a fourth history and the fourth degree; and an estimation unit configured to estimate a degree of deterioration of the battery based on the specified degree.
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517.发明申请公开(公告)号：US20250018819A1
公开(公告)日：2025-01-16
申请号：US18715577
申请日：2022-11-24
Applicant: GS Yuasa International Ltd.
Inventor： Hiroaki ENDO
Abstract: A charging and discharging system 10 including a charging and discharging device 100 to which a vehicle energy storage apparatus 40 of a vehicle 30 is connected and which supplies electric power to an electric power load 20 includes a first charging and discharging device 100a, which is the charging and discharging device 100 to which a first vehicle energy storage apparatus 40a being the vehicle energy storage apparatus 40 is connected and which is electrically connected to a second charging and discharging device 100b being another charging and discharging device 100 to which a second vehicle energy storage apparatus 40b being another vehicle energy storage apparatus 40 is connected. The first charging and discharging device 100a includes a control section 120 controlling the first voltage output from the first charging and discharging device 100a and the first phase of the first voltage in such a way as to match the second voltage output from the second charging and discharging device 100b and the second phase of the second voltage.
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公开(公告)号：US20250015262A1
公开(公告)日：2025-01-09
申请号：US18711939
申请日：2022-11-21
Inventor： Takashi Hakari , Masashi Ishikawa , Chihiro Murata , Daisuke Okuda , Shinji Ozaki , Ryo Harada , Atsuro Kondo , Tokuo Inamasu
IPC: H01M4/36 , H01G11/60 , H01M4/02 , H01M4/587 , H01M10/0569
Abstract: A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes: a positive electrode containing a composite of porous carbon and sulfur; and a nonaqueous electrolyte containing a nonaqueous solvent containing an unsaturated cyclic carbonate and a lithium salt, in which a cumulative 70% pore size of the porous carbon is 2.0 nm or more and 7.0 nm or less, a content of the unsaturated cyclic carbonate in the nonaqueous solvent is 10 vol % or more, and a positive electrode potential at an end-of-discharge voltage in normal use is 1.0 V vs. Li/Li+ or less.
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公开(公告)号：US20250006891A1
公开(公告)日：2025-01-02
申请号：US18828803
申请日：2024-09-09
Applicant: GS Yuasa International Ltd.
Inventor： Shinnosuke ICHIKAWA , Nobuhiro NAKAJIMA , Takashi SHIMIZU , Akihito TANOI , Heisuke NISHIKAWA
IPC: H01M4/134 , H01M4/02 , H01M4/38 , H01M4/62 , H01M10/0567 , H01M10/0569
Abstract: A negative electrode includes a negative active material layer containing a silicon-based negative active material, a rubber-based binder, and a carbon nanotube, wherein a content of the silicon-based negative active material in the negative active material layer is 68 mass % or more, a content of the rubber-based binder in the negative active material layer is 3.0 mass % or more, and a content of the carbon nanotube in the negative active material layer is 0.4×(n2+4n)/(2n+3) mass % or less where n is the number of layers of graphene forming the carbon nanotube.
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公开(公告)号：US12183916B2
公开(公告)日：2024-12-31
申请号：US17464463
申请日：2021-09-01
Inventor： Taisei Inoue , Daisuke Nishikawa , Manabu Yamamoto , Katsuya Inoue
Abstract: When a non-aqueous electrolyte secondary battery in which a positive electrode active material comprising a layered lithium-composite oxide is used for a positive electrode is subjected to charge/discharge under a prescribed condition, in a graph showing the relationship between voltage “V” with discharge during 5th cycle and value dQ/dV from differentiation of battery capacity “Q” with discharge during 5th cycle by voltage “V”, peak intensity ratio “r” represented by the equation: r=|Ic|/(|Ia|+|Ib|+|Ic|) satisfies 0
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