公开(公告)号：US11108041B2

公开(公告)日：2021-08-31

申请号：US16466947

申请日：2017-12-07

Applicant: GS Yuasa International Ltd.

Inventor： Akifumi Kikuchi ,  Ryota Kido

IPC: H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/62 ,  H01M4/58 ,  H01M10/0567

Abstract: Provided are a nonaqueous electrolyte energy storage device having high capacity retention ratio after charge-discharge cycles at a high temperature of about 45° C., and a method for producing such a nonaqueous electrolyte energy storage device. One aspect of the present invention is a nonaqueous electrolyte energy storage device including a positive electrode having a positive composite that contains a phosphorus atom and a lithium-transition metal composite oxide containing manganese, wherein, in a spectrum of the positive composite by X-ray photoelectron spectroscopy, a peak position for P2p is observed at 134.7 eV or less. Another aspect of the present invention is a method for producing a nonaqueous electrolyte energy storage device, the method including forming a positive electrode using a positive composite paste that contains a phosphorus oxo acid and a lithium-transition metal composite oxide containing manganese.

公开(公告)号：US20210265691A1

公开(公告)日：2021-08-26

申请号：US17252016

申请日：2019-06-21

Applicant: GS Yuasa International Ltd.

Inventor： Yosuke NISHIMURA ,  Nobuyuki NAGANAWA ,  Kenta YOSHIOKA ,  Yoshimasa TOSHIOKA

IPC: H01M50/209 ,  H01M50/593

Abstract: In an embodiment, an energy storage apparatus includes plural energy storage devices arranged in a first direction, and a frame arranged along the energy storage devices. Each of the energy storage devices has an outer surface facing in a second direction orthogonal to the first direction. The frame has a first portion extending in the first direction along the outer surface, and a second portion extending in the second direction toward a facing surface on which the energy storage apparatus is installed, from at least a part of the first portion.

公开(公告)号：US20210255249A1

公开(公告)日：2021-08-19

申请号：US16973715

申请日：2019-04-15

Applicant: GS Yuasa International Ltd.

Inventor： Keita NAKAI ,  Hitoshi MATSUSHIMA ,  Tomikatsu UCHIHORI ,  Tetsuro MATSUMOTO

IPC: G01R31/3842 ,  H02J7/00 ,  G06F3/147 ,  H04B1/3827 ,  G01R31/371

Abstract: A communication device is provided with: a first communication part that is connected to an energy storage device or a power supply related apparatus and communicates with the energy storage device or the power supply related apparatus; an acquisition part that acquires information including a state of the energy storage device or the power supply related apparatus on the basis of a set timing; a change acceptance part that accepts a change in the timing and changes the timing; and a transmission part that transmits, at a timing after the change, the information acquired by the acquisition part to a first apparatus by using a second communication part communicatively connected to the first apparatus.

公开(公告)号：US20210249198A1

公开(公告)日：2021-08-12

申请号：US17241551

申请日：2021-04-27

Applicant: GS Yuasa International Ltd.

Inventor： Suguru CHIZAWA

IPC: H01G11/42 ,  H01M4/133 ,  H01M4/36 ,  H01M4/62

Abstract: The nonaqueous electrolyte energy storage device according to an aspect of the present invention includes a negative electrode including graphite and graphitizable carbon, in which a ratio of a mass of the graphitizable carbon to a total mass of the graphite and the graphitizable carbon is less than 26% by mass, and a median diameter of the graphitizable carbon is smaller than a median diameter of the graphite.

公开(公告)号：US20210242541A1

公开(公告)日：2021-08-05

申请号：US16967657

申请日：2019-02-04

Applicant: GS Yuasa International Ltd.

Inventor： Shun SASAKI ,  Yasuyuki IWASHIMA ,  Yo HASEGAWA ,  Tsuyoshi HIDAKA ,  Yuta YAMAMOTO

IPC: H01M50/507 ,  H01R13/518 ,  H01M50/51

Abstract: An energy storage apparatus includes: an energy storage device group in which a terminal surface and a side surface intersecting the terminal surface are formed by a plurality of arrayed energy storage devices; and a busbar frame holding a plurality of busbars. The busbar frame is provided with a body holding the busbar and disposed on the terminal surface, a connector holder having a connector, to which an external connector is connected, and disposed on the side surface, and a coupling portion coupling the body and the connector holder.

公开(公告)号：US11069930B2

公开(公告)日：2021-07-20

申请号：US15714125

申请日：2017-09-25

Applicant: GS Yuasa International Ltd.

Inventor： Shogo Tsuruta ,  Yuichiro Yamamoto

IPC: H01M50/20 ,  H01M10/613 ,  H01M10/647 ,  H01M10/652 ,  H01M10/6557 ,  H01M10/6567 ,  H01M10/48 ,  H01M10/42 ,  H01M50/502 ,  H01M10/625

Abstract: An energy storage apparatus including: an outer case having a bottom wall and a side wall; an energy storage device; an insulating member disposed at a position where the energy storage device is sandwiched between the bottom wall and the insulating member; a first adhesive layer which makes the insulating member and the energy storage device adhere to each other; and a second adhesive layer which makes the insulating member and the side wall adhere to each other.

公开(公告)号：US20210190869A1

公开(公告)日：2021-06-24

申请号：US17130431

申请日：2020-12-22

Applicant: GS Yuasa International Ltd.

Inventor： Shoya MORISHIMA ,  Yuki NAKANISHI

IPC: G01R31/379 ,  B60L58/15 ,  H01M10/48

Abstract: A method for estimating a state of charge of a valve regulated lead-acid battery includes; an overcharge amount identification step of identifying an overcharge amount when the lead-acid battery is overcharged after an arbitrary reference time; an open circuit voltage acquisition step of acquiring an open circuit voltage of the lead-acid battery after the reference time; and a state-of-charge estimation step of estimating a state of charge of the lead-acid battery based on the acquired open circuit voltage and a correlation between an open circuit voltage and state of charge in which a rate of change of the state of charge with respect to the open circuit voltage is smaller as the overcharge amount from the reference time until an acquisition time of the open circuit voltage is larger.

公开(公告)号：US20210167425A1

公开(公告)日：2021-06-03

申请号：US15734177

申请日：2019-06-04

Applicant: GS Yuasa International Ltd.

Inventor： Katsuya OJI

IPC: H01M10/0587 ,  H01G9/02 ,  H01G9/048 ,  H01M10/04

Abstract: An energy storage device includes an electrode assembly having a negative electrode plate and a separator wound around a tubular core material. The core material has a first line part and a second line part extending along a first imaginary line and a second imaginary line parallel to a long side surface of a case, respectively. At least one of the first line part and the second line part has a curved portion that protrudes toward the other beyond the first imaginary line or the second imaginary line. An inner peripheral edge of the negative electrode plate is located at a position other than the curved portion in at least one of the first line part and the second line part.

公开(公告)号：US11024470B2

公开(公告)日：2021-06-01

申请号：US16496283

申请日：2018-03-20

Applicant: GS Yuasa International Ltd.

Inventor： Suguru Chizawa

IPC: H01G11/42 ,  H01M4/133 ,  H01M4/36 ,  H01M4/62

Abstract: The nonaqueous electrolyte energy storage device according to an aspect of the present invention includes a negative electrode including graphite and graphitizable carbon, in which a ratio of a mass of the graphitizable carbon to a total mass of the graphite and the graphitizable carbon is less than 26% by mass, and a median diameter of the graphitizable carbon is smaller than a median diameter of the graphite.

公开(公告)号：US11011798B2

公开(公告)日：2021-05-18

申请号：US16311609

申请日：2017-06-23

Applicant: GS Yuasa International Ltd.

Inventor： Yukio Enomoto

IPC: H01M2/18 ,  H01M2/34 ,  H01M10/058 ,  H01G11/26 ,  H01G11/78 ,  H01M50/463

Abstract: An energy storage device includes: an electrode assembly; a case for accommodating the electrode assembly; a spacer interposed between the case and the electrode assembly; and a strip-like member being brought into contact with each of a side surface of the spacer and a side surface of the electrode assembly and fixing the spacer and the electrode assembly to each other. A portion of the spacer with which the strip-like member is brought into contact is wholly formed of a recessed portion.